glibc/manual/errno.texi

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@node Error Reporting, Memory, Introduction, Top
1995-02-18 01:27:10 +00:00
@chapter Error Reporting
Update. 1998-07-10 18:14 -0400 Zack Weinberg <zack@rabi.phys.columbia.edu> * manual/Makefile: Overhauled. Generate libc.texinfo from the chapter files. Exorcise the chapters, chapters-incl mess. Support inserting doc chapters from add-on modules. (chapters): New variable. (add-chapters): New variable. (appendices): New variable. (libc.texinfo): New target. (clean): Fix bugs. (realclean): Fix bugs. * manual/texis.awk: New file. * manual/libc-texinfo.sh: New file. * manual/libc-texinfo.in: New file. * manual/conf.texi (top @node): Remove next pointer. * manual/lang.texi (top @node): Remove prev pointer. * manual/job.texi (top @node): Add explicit pointers. * manual/message.texi (top @node): Add explicit pointers. * manual/nss.texi (top @node): Add explicit pointers. * manual/process.texi (top @node): Add explicit pointers. * manual/startup.texi (top @node): Add explicit pointers. * manual/terminal.texi (top @node): Add explicit pointers. * manual/users.texi (top @node): Add explicit pointers. * manual/arith.texi: Add %MENU% tag. * manual/conf.texi: Add %MENU% tag. * manual/contrib.texi: Add %MENU% tag. * manual/ctype.texi: Add %MENU% tag. * manual/errno.texi: Add %MENU% tag. * manual/filesys.texi: Add %MENU% tag. * manual/header.texi: Add %MENU% tag. * manual/install.texi: Add %MENU% tag. * manual/intro.texi: Add %MENU% tag. * manual/io.texi: Add %MENU% tag. * manual/job.texi: Add %MENU% tag. * manual/lang.texi: Add %MENU% tag. * manual/llio.texi: Add %MENU% tag. * manual/locale.texi: Add %MENU% tag. * manual/maint.texi: Add %MENU% tag. * manual/math.texi: Add %MENU% tag. * manual/mbyte.texi: Add %MENU% tag. * manual/memory.texi: Add %MENU% tag. * manual/message.texi: Add %MENU% tag. * manual/nss.texi: Add %MENU% tag. * manual/pattern.texi: Add %MENU% tag. * manual/pipe.texi: Add %MENU% tag. * manual/process.texi: Add %MENU% tag. * manual/search.texi: Add %MENU% tag. * manual/setjmp.texi: Add %MENU% tag. * manual/signal.texi: Add %MENU% tag. * manual/socket.texi: Add %MENU% tag. * manual/startup.texi: Add %MENU% tag. * manual/stdio.texi: Add %MENU% tag. * manual/string.texi: Add %MENU% tag. * manual/sysinfo.texi: Add %MENU% tag. * manual/terminal.texi: Add %MENU% tag. * manual/time.texi: Add %MENU% tag. * manual/users.texi: Add %MENU% tag. 1998-07-13 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/i386/dl-procinfo.h (x86_cap_flags): Update. 1998-07-11 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/unix/sysv/linux/recvmsg.c (__libc_recvmsg): Use ANSI style declaration to avoid warning. * sysdeps/unix/sysv/linux/sendmsg.c (__libc_sendmsg): Likewise. 1998-07-04 Mark Kettenis <kettenis@phys.uva.nl> * elf/rtld.c (process_dl_debug): Add missing continue. 1998-07-12 Mark Kettenis <kettenis@phys.uva.nl> * elf/rtld.c (_dl_skip_args): Make global because the Hurd startup code needs it. 1998-07-10 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makeconfig ($(common-objpfx)sysd-dirs): Write out definition of sysd-dirs-done. * Makerules: Don't generate version maps too early. ($(common-objpfx)sysd-versions): Force regeneration if the list of subdirs has changed. 1998-07-10 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/dlfcn.h (DL_CALL_FCT): Use portable comma expression. 1998-07-11 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * iconv/gconv_db.c (gen_steps): Always set *handle and *nsteps. * iconv/gconv_dl.c (__gconv_find_shlib): Correct use of tfind return value. 1998-07-12 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/dl-open.c (dl_open_worker): New function. (_dl_open): Call it to do the actual work while catching errors. * elf/dl-close.c (_dl_close): Only call termination function if the initialisation function was called. 1998-07-13 Ulrich Drepper <drepper@cygnus.com> * libio/libioP.h (_IO_cleanup_registration_needed): Use __PMT. Reported by Felix von Leitner <leitner@amdiv.de>. 1998-07-13 10:28 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/rtld.c (process_dl_debug): Add missing continue. 1998-06-23 Mark Kettenis <kettenis@phys.uva.nl>
1998-07-13 12:29:13 +00:00
@c %MENU% How library functions report errors
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@cindex error reporting
@cindex reporting errors
@cindex error codes
@cindex status codes
Many functions in the GNU C library detect and report error conditions,
and sometimes your programs need to check for these error conditions.
For example, when you open an input file, you should verify that the
file was actually opened correctly, and print an error message or take
other appropriate action if the call to the library function failed.
This chapter describes how the error reporting facility works. Your
program should include the header file @file{errno.h} to use this
facility.
@pindex errno.h
@menu
* Checking for Errors:: How errors are reported by library functions.
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
1996-05-22 02:11:55 +00:00
* Error Codes:: Error code macros; all of these expand
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into integer constant values.
* Error Messages:: Mapping error codes onto error messages.
@end menu
@node Checking for Errors, Error Codes, , Error Reporting
@section Checking for Errors
Most library functions return a special value to indicate that they have
failed. The special value is typically @code{-1}, a null pointer, or a
constant such as @code{EOF} that is defined for that purpose. But this
return value tells you only that an error has occurred. To find out
what kind of error it was, you need to look at the error code stored in the
variable @code{errno}. This variable is declared in the header file
@file{errno.h}.
@pindex errno.h
@comment errno.h
update from main archive 961207 Sun Dec 8 06:56:49 1996 Ulrich Drepper <drepper@cygnus.com> * io/getwd.c: Use PATH_MAX not LOCAL_PATH_MAX. Fix typo in comment. * stdlib/canonicalize.c: Correct bugs in last change. Patch by HJ Lu. * libio/Makefile (routines): Remove ioprims. (aux): Remove cleanup. Add IO_DEBUG option for .o files. * libio/cleanups.c: Removed. * libio/ioprims.c: Removed. * libio/filedoalloc.c: More updates from libg++-2.8b5. * libio/fileops.c: Likewise. * libio/genops.c: Likewise. * libio/iolibio.h: Likewise. * libio/iopopen.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/libio.h: Likewise. * libio/libioP.h: Likewise. * libio/memstream.c: Likewise. * libio/strfile.h: Likewise. * libio/vasprintf.c: Likewise. * libio/vsnprintf.c: Likewise. * libio/stdio.h: Define P_tmpdir only is __USE_SVID. * manual/arith.texi: Change references to ANSI C to ISO C. * manual/conf.texi: Likewise. * manual/creature.texi: Likewise. * manual/ctype.texi: Likewise. * manual/errno.texi: Likewise. * manual/filesys.texi: Likewise. * manual/intro.texi. Likewise. * manual/io.texi: Likewise. * manual/lang.texi: Likewise. * manual/libc.texinfo: Likewise. * manual/locale.texi: Likewise. * manual/maint.texi: Likewise. * manual/mbyte.texi: Likewise. * manual/memory.texi: Likewise. * manual/process.texi: Likewise. * manual/process.texi: Likewise. * manual/search.texi: Likewise. * manual/setjmp.texi: Likewise. * manual/signal.texi: Likewise. * manual/startup.texi: Likewise. * manual/stdio.texi: Likewise. * manual/string.texi: Likewise. * manual/time.texi: Likewise. * manual/locale.texi: Remove description of LC_RESPONSE and add LC_MESSAGES. * Makefile (subdirs): Change malloc in $(malloc). * config.make.in: Add variable malloc which is initialized from @malloc@. * configure.in: Add new option --enable-new-malloc to use new malloc. This is the default on Linux. * sysdeps/unix/sysv/linux/configure.in: Define malloc to new-malloc by default. * new-malloc/Makefile: New file. Improved malloc implementation. * new-malloc/malloc.c: Likewise. * new-malloc/malloc.h: Likewise. * new-malloc/mallocbug.c: Likewise. * new-malloc/obstack.c: Likewise. * new-malloc/obstack.h: Likewise. * new-malloc/thread-m.h: Likewise. * time/Makefile: Compile ap.c with NO_MCHECK flag for now. * time/ap.c: Don't call mcheck if NO_MCHECK is defined. * resolv/Makefile: Add rule to rebuiild libresolv.so when libc.so changed. * stdio/feof.c: Update copyright. * stdio/stdio.h: Add field for lock to FILE structure. Add cast to *MAGIC constants to prevent warnings. * stdio-common/bug7.c: Correct test. Stream must not be closed twice. * stdlib/Makefile (routines): Add secure-getenv. * stdlib/secure-getenv.c: New file. __secure_getenv function moved to here from sysdeps/generic/getenv.c. Otherwise an application cannot replace the getenv function in the libc. * sysdeps/generic/getenv.c: Remove __secure_getenv function. * sysdeps/stub/getenv.c: Remove __secure_getenv alias. * sysdeps/mach/libc-lock.h: Define__libc_mutex_lock to __mutex_lock. * sysdeps/posix/fdopen.c: Update copyright. Don't use EXFUN. * time/test-tz.c: Comment fifth test out. PROBLEM. * time/tzset.c: De-ANSI-declfy. (__tzset): Don't increment pointer tz when no DST information is given. Sat Dec 7 23:47:54 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/libc-lock.h [_LIBC]: Add definition of __libc_mutex_lock. Patch by Thomas Bushnell. * sysdeps/unix/sysv/linux/timebits.h: Load <asm/param.h> only if __USE_MISC. * sysdeps/unix/sysv/linux/Dist: Add llseek.c. Sat Dec 7 12:18:56 1996 Ulrich Drepper <drepper@cygnus.com> * time/strftime (%c format): Remove %Z from default string. Reported by Paul Eggert * io/getwd.c: Don't apply getcwd on user supplied buffer.
1996-12-08 08:01:13 +00:00
@comment ISO
1995-02-18 01:27:10 +00:00
@deftypevr {Variable} {volatile int} errno
The variable @code{errno} contains the system error number. You can
change the value of @code{errno}.
Since @code{errno} is declared @code{volatile}, it might be changed
asynchronously by a signal handler; see @ref{Defining Handlers}.
However, a properly written signal handler saves and restores the value
of @code{errno}, so you generally do not need to worry about this
possibility except when writing signal handlers.
The initial value of @code{errno} at program startup is zero. Many
library functions are guaranteed to set it to certain nonzero values
when they encounter certain kinds of errors. These error conditions are
listed for each function. These functions do not change @code{errno}
when they succeed; thus, the value of @code{errno} after a successful
call is not necessarily zero, and you should not use @code{errno} to
determine @emph{whether} a call failed. The proper way to do that is
documented for each function. @emph{If} the call failed, you can
1995-02-18 01:27:10 +00:00
examine @code{errno}.
Many library functions can set @code{errno} to a nonzero value as a
result of calling other library functions which might fail. You should
assume that any library function might alter @code{errno} when the
function returns an error.
update from main archive 961207 Sun Dec 8 06:56:49 1996 Ulrich Drepper <drepper@cygnus.com> * io/getwd.c: Use PATH_MAX not LOCAL_PATH_MAX. Fix typo in comment. * stdlib/canonicalize.c: Correct bugs in last change. Patch by HJ Lu. * libio/Makefile (routines): Remove ioprims. (aux): Remove cleanup. Add IO_DEBUG option for .o files. * libio/cleanups.c: Removed. * libio/ioprims.c: Removed. * libio/filedoalloc.c: More updates from libg++-2.8b5. * libio/fileops.c: Likewise. * libio/genops.c: Likewise. * libio/iolibio.h: Likewise. * libio/iopopen.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/libio.h: Likewise. * libio/libioP.h: Likewise. * libio/memstream.c: Likewise. * libio/strfile.h: Likewise. * libio/vasprintf.c: Likewise. * libio/vsnprintf.c: Likewise. * libio/stdio.h: Define P_tmpdir only is __USE_SVID. * manual/arith.texi: Change references to ANSI C to ISO C. * manual/conf.texi: Likewise. * manual/creature.texi: Likewise. * manual/ctype.texi: Likewise. * manual/errno.texi: Likewise. * manual/filesys.texi: Likewise. * manual/intro.texi. Likewise. * manual/io.texi: Likewise. * manual/lang.texi: Likewise. * manual/libc.texinfo: Likewise. * manual/locale.texi: Likewise. * manual/maint.texi: Likewise. * manual/mbyte.texi: Likewise. * manual/memory.texi: Likewise. * manual/process.texi: Likewise. * manual/process.texi: Likewise. * manual/search.texi: Likewise. * manual/setjmp.texi: Likewise. * manual/signal.texi: Likewise. * manual/startup.texi: Likewise. * manual/stdio.texi: Likewise. * manual/string.texi: Likewise. * manual/time.texi: Likewise. * manual/locale.texi: Remove description of LC_RESPONSE and add LC_MESSAGES. * Makefile (subdirs): Change malloc in $(malloc). * config.make.in: Add variable malloc which is initialized from @malloc@. * configure.in: Add new option --enable-new-malloc to use new malloc. This is the default on Linux. * sysdeps/unix/sysv/linux/configure.in: Define malloc to new-malloc by default. * new-malloc/Makefile: New file. Improved malloc implementation. * new-malloc/malloc.c: Likewise. * new-malloc/malloc.h: Likewise. * new-malloc/mallocbug.c: Likewise. * new-malloc/obstack.c: Likewise. * new-malloc/obstack.h: Likewise. * new-malloc/thread-m.h: Likewise. * time/Makefile: Compile ap.c with NO_MCHECK flag for now. * time/ap.c: Don't call mcheck if NO_MCHECK is defined. * resolv/Makefile: Add rule to rebuiild libresolv.so when libc.so changed. * stdio/feof.c: Update copyright. * stdio/stdio.h: Add field for lock to FILE structure. Add cast to *MAGIC constants to prevent warnings. * stdio-common/bug7.c: Correct test. Stream must not be closed twice. * stdlib/Makefile (routines): Add secure-getenv. * stdlib/secure-getenv.c: New file. __secure_getenv function moved to here from sysdeps/generic/getenv.c. Otherwise an application cannot replace the getenv function in the libc. * sysdeps/generic/getenv.c: Remove __secure_getenv function. * sysdeps/stub/getenv.c: Remove __secure_getenv alias. * sysdeps/mach/libc-lock.h: Define__libc_mutex_lock to __mutex_lock. * sysdeps/posix/fdopen.c: Update copyright. Don't use EXFUN. * time/test-tz.c: Comment fifth test out. PROBLEM. * time/tzset.c: De-ANSI-declfy. (__tzset): Don't increment pointer tz when no DST information is given. Sat Dec 7 23:47:54 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/libc-lock.h [_LIBC]: Add definition of __libc_mutex_lock. Patch by Thomas Bushnell. * sysdeps/unix/sysv/linux/timebits.h: Load <asm/param.h> only if __USE_MISC. * sysdeps/unix/sysv/linux/Dist: Add llseek.c. Sat Dec 7 12:18:56 1996 Ulrich Drepper <drepper@cygnus.com> * time/strftime (%c format): Remove %Z from default string. Reported by Paul Eggert * io/getwd.c: Don't apply getcwd on user supplied buffer.
1996-12-08 08:01:13 +00:00
@strong{Portability Note:} @w{ISO C} specifies @code{errno} as a
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``modifiable lvalue'' rather than as a variable, permitting it to be
implemented as a macro. For example, its expansion might involve a
function call, like @w{@code{*_errno ()}}. In fact, that is what it is
on the GNU system itself. The GNU library, on non-GNU systems, does
whatever is right for the particular system.
There are a few library functions, like @code{sqrt} and @code{atan},
that return a perfectly legitimate value in case of an error, but also
set @code{errno}. For these functions, if you want to check to see
whether an error occurred, the recommended method is to set @code{errno}
to zero before calling the function, and then check its value afterward.
@end deftypevr
@pindex errno.h
All the error codes have symbolic names; they are macros defined in
@file{errno.h}. The names start with @samp{E} and an upper-case
letter or digit; you should consider names of this form to be
reserved names. @xref{Reserved Names}.
The error code values are all positive integers and are all distinct,
with one exception: @code{EWOULDBLOCK} and @code{EAGAIN} are the same.
Since the values are distinct, you can use them as labels in a
@code{switch} statement; just don't use both @code{EWOULDBLOCK} and
@code{EAGAIN}. Your program should not make any other assumptions about
the specific values of these symbolic constants.
The value of @code{errno} doesn't necessarily have to correspond to any
of these macros, since some library functions might return other error
codes of their own for other situations. The only values that are
guaranteed to be meaningful for a particular library function are the
ones that this manual lists for that function.
On non-GNU systems, almost any system call can return @code{EFAULT} if
it is given an invalid pointer as an argument. Since this could only
happen as a result of a bug in your program, and since it will not
happen on the GNU system, we have saved space by not mentioning
@code{EFAULT} in the descriptions of individual functions.
In some Unix systems, many system calls can also return @code{EFAULT} if
given as an argument a pointer into the stack, and the kernel for some
obscure reason fails in its attempt to extend the stack. If this ever
happens, you should probably try using statically or dynamically
allocated memory instead of stack memory on that system.
@node Error Codes, Error Messages, Checking for Errors, Error Reporting
@section Error Codes
@pindex errno.h
The error code macros are defined in the header file @file{errno.h}.
All of them expand into integer constant values. Some of these error
codes can't occur on the GNU system, but they can occur using the GNU
library on other systems.
@comment errno.h
@comment POSIX.1: Operation not permitted
@deftypevr Macro int EPERM
@comment errno 1 @c DO NOT REMOVE
Operation not permitted; only the owner of the file (or other resource)
or processes with special privileges can perform the operation.
@end deftypevr
@comment errno.h
@comment POSIX.1: No such file or directory
@deftypevr Macro int ENOENT
@comment errno 2 @c DO NOT REMOVE
No such file or directory. This is a ``file doesn't exist'' error
for ordinary files that are referenced in contexts where they are
expected to already exist.
@end deftypevr
@comment errno.h
@comment POSIX.1: No such process
@deftypevr Macro int ESRCH
@comment errno 3 @c DO NOT REMOVE
No process matches the specified process ID.
@end deftypevr
@comment errno.h
@comment POSIX.1: Interrupted system call
@deftypevr Macro int EINTR
@comment errno 4 @c DO NOT REMOVE
Update from main archive 961219 Thu Dec 19 23:28:33 1996 Ulrich Drepper <drepper@cygnus.com> * resolv/resolv.h: Update from BIND 4.9.5-P1. * resolv/res_comp.c: Likewise. * resolv/res_debug.c: Likewise. * resolv/Banner: Update version number. Thu Dec 19 20:58:53 1996 Ulrich Drepper <drepper@cygnus.com> * elf/dlfcn.h: Add extern "C" wrapper. * io/utime.h: Don't define NULL since this isn't allowed in POSIX. * io/sys/stat.h: Declare `lstat' only if __USE_BSD || __USE_XOPEN_EXTENDED. * locale/locale.h: Define NULL. * math/math.c: Don't include <errno.h> to define math errors. * stdlib/stdlib.h: Likewise. * posix/unistd.h: Don't declare environ. * posix/sys/utsname.h (struct utsname): Declare member domainname as __domainname is !__USE_GNU. * signal/signal.h: Declare size_t only if __USE_BSD || __USE_XOPEN_EXTENDED. * stdio/stdio.h: Don't declare cuserid when __USE_POSIX, but instead when __USE_XOPEN. * string/string.h: Define strndup only if __USE_GNU. * sysdeps/unix/sysv/linux/clock.c: New file. * sysdeps/unix/sysv/linux/timebits.h: Define CLOCKS_PER_SEC as 1000000 per X/Open standard. * features.h: Add code to recognize _POSIX_C_SOURCE value 199309. Define __USE_POSIX199309. * posix/unistd.h: Declare fdatasync only if __USE_POSIX199309. * time/time.c: Declare nanosleep only if __USE_POSIX199309. Patches by Rdiger Helsch <rh@unifix.de>. * locale/locale.h: Add declaration of newlocale and freelocale. * new-malloc/Makefile (distibute): Add mtrace.awk. (dist-routines): Add mcheck and mtrace. (install-lib, non-lib.a): Define as libmcheck.a. * new-malloc/malloc.h: Add declaration of __malloc_initialized. * new-malloc/mcheck.c: New file. * new-malloc/mcheck.h: New file. * new-malloc/mtrace.c: New file. * new-malloc/mtrace.awk: New file. * posix/unistd.h: Correct prototype for usleep. * sysdeps/unix/bsd/usleep.c: De-ANSI-declfy. Correct return type. * sysdeps/unix/sysv/linux/usleep.c: Real implementation based on nanosleep. * signal/signal.h: Change protoype of __sigpause to take two arguments. Remove prototype for sigpause. Add two different macros named sigpause selected when __USE_BSD or __USE_XOPEN are defined. This is necessary since the old BSD definition of theis function collides with the X/Open definition. * sysdeps/posix/sigpause.c: Change function definition to also fit X/Open definition. * sysdeps/libm-i387/e_exp.S: Make sure stack is empty when the function is left. * sysdeps/libm-i387/e_expl.S: Likewise. Patch by HJ Lu. 1996-12-17 Paul Eggert <eggert@twinsun.com> * many, many files: Spelling corrections. * catgets/catgetsinfo.h (mmapped): Renamed from mmaped (in struct catalog_info.status). * mach/err_kern.sub (err_codes_unix), string/stratcliff.c (main): Fix spelling in message. * po/libc.pot: Fix spelling in message for `zic'; this anticipates a fix in the tzcode distribution. Wed Dec 18 15:48:02 1996 Ulrich Drepper <drepper@cygnus.com> * time/strftime.c: Implement ^ flag to cause output be converted to use upper case characters. * time/zic.c: Update from ADO tzcode1996n. Wed Dec 18 14:29:24 1996 Erik Naggum <erik@naggum.no> * time/strftime.c (add): Don't change global `i' until all is over. Define NULL is not already defined. Tue Dec 17 09:49:03 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * libio/iovsprintf.c (_IO_vsprintf): Change `&sf' to `&sf._sbf._f' to avoid the need for a cast. * libio/iovsscanf.c (_IO_vsscanf): Likewise. * sunrpc/rpc/xdr.h: Add prototype for xdr_free.
1996-12-20 01:39:50 +00:00
Interrupted function call; an asynchronous signal occurred and prevented
1995-02-18 01:27:10 +00:00
completion of the call. When this happens, you should try the call
again.
You can choose to have functions resume after a signal that is handled,
rather than failing with @code{EINTR}; see @ref{Interrupted
Primitives}.
@end deftypevr
@comment errno.h
@comment POSIX.1: Input/output error
@deftypevr Macro int EIO
@comment errno 5 @c DO NOT REMOVE
Input/output error; usually used for physical read or write errors.
@end deftypevr
@comment errno.h
@comment POSIX.1: No such device or address
1995-02-18 01:27:10 +00:00
@deftypevr Macro int ENXIO
@comment errno 6 @c DO NOT REMOVE
No such device or address. The system tried to use the device
represented by a file you specified, and it couldn't find the device.
This can mean that the device file was installed incorrectly, or that
the physical device is missing or not correctly attached to the
computer.
@end deftypevr
@comment errno.h
@comment POSIX.1: Argument list too long
@deftypevr Macro int E2BIG
@comment errno 7 @c DO NOT REMOVE
Argument list too long; used when the arguments passed to a new program
being executed with one of the @code{exec} functions (@pxref{Executing a
File}) occupy too much memory space. This condition never arises in the
GNU system.
@end deftypevr
@comment errno.h
@comment POSIX.1: Exec format error
@deftypevr Macro int ENOEXEC
@comment errno 8 @c DO NOT REMOVE
Invalid executable file format. This condition is detected by the
@code{exec} functions; see @ref{Executing a File}.
@end deftypevr
@comment errno.h
@comment POSIX.1: Bad file descriptor
@deftypevr Macro int EBADF
@comment errno 9 @c DO NOT REMOVE
Bad file descriptor; for example, I/O on a descriptor that has been
closed or reading from a descriptor open only for writing (or vice
versa).
@end deftypevr
@comment errno.h
@comment POSIX.1: No child processes
@deftypevr Macro int ECHILD
@comment errno 10 @c DO NOT REMOVE
There are no child processes. This error happens on operations that are
supposed to manipulate child processes, when there aren't any processes
to manipulate.
@end deftypevr
@comment errno.h
@comment POSIX.1: Resource deadlock avoided
@deftypevr Macro int EDEADLK
@comment errno 11 @c DO NOT REMOVE
Deadlock avoided; allocating a system resource would have resulted in a
deadlock situation. The system does not guarantee that it will notice
all such situations. This error means you got lucky and the system
noticed; it might just hang. @xref{File Locks}, for an example.
@end deftypevr
@comment errno.h
@comment POSIX.1: Cannot allocate memory
@deftypevr Macro int ENOMEM
@comment errno 12 @c DO NOT REMOVE
No memory available. The system cannot allocate more virtual memory
because its capacity is full.
@end deftypevr
@comment errno.h
@comment POSIX.1: Permission denied
@deftypevr Macro int EACCES
@comment errno 13 @c DO NOT REMOVE
Permission denied; the file permissions do not allow the attempted operation.
@end deftypevr
@comment errno.h
@comment POSIX.1: Bad address
@deftypevr Macro int EFAULT
@comment errno 14 @c DO NOT REMOVE
Bad address; an invalid pointer was detected.
In the GNU system, this error never happens; you get a signal instead.
@end deftypevr
@comment errno.h
@comment BSD: Block device required
@deftypevr Macro int ENOTBLK
@comment errno 15 @c DO NOT REMOVE
A file that isn't a block special file was given in a situation that
requires one. For example, trying to mount an ordinary file as a file
system in Unix gives this error.
@end deftypevr
@comment errno.h
@comment POSIX.1: Device or resource busy
1995-02-18 01:27:10 +00:00
@deftypevr Macro int EBUSY
@comment errno 16 @c DO NOT REMOVE
Resource busy; a system resource that can't be shared is already in use.
For example, if you try to delete a file that is the root of a currently
mounted filesystem, you get this error.
@end deftypevr
@comment errno.h
@comment POSIX.1: File exists
@deftypevr Macro int EEXIST
@comment errno 17 @c DO NOT REMOVE
File exists; an existing file was specified in a context where it only
makes sense to specify a new file.
@end deftypevr
@comment errno.h
@comment POSIX.1: Invalid cross-device link
@deftypevr Macro int EXDEV
@comment errno 18 @c DO NOT REMOVE
An attempt to make an improper link across file systems was detected.
This happens not only when you use @code{link} (@pxref{Hard Links}) but
also when you rename a file with @code{rename} (@pxref{Renaming Files}).
@end deftypevr
@comment errno.h
@comment POSIX.1: No such device
1995-02-18 01:27:10 +00:00
@deftypevr Macro int ENODEV
@comment errno 19 @c DO NOT REMOVE
The wrong type of device was given to a function that expects a
particular sort of device.
@end deftypevr
@comment errno.h
@comment POSIX.1: Not a directory
@deftypevr Macro int ENOTDIR
@comment errno 20 @c DO NOT REMOVE
A file that isn't a directory was specified when a directory is required.
@end deftypevr
@comment errno.h
@comment POSIX.1: Is a directory
@deftypevr Macro int EISDIR
@comment errno 21 @c DO NOT REMOVE
File is a directory; you cannot open a directory for writing,
or create or remove hard links to it.
@end deftypevr
@comment errno.h
@comment POSIX.1: Invalid argument
@deftypevr Macro int EINVAL
@comment errno 22 @c DO NOT REMOVE
Invalid argument. This is used to indicate various kinds of problems
with passing the wrong argument to a library function.
@end deftypevr
@comment errno.h
@comment POSIX.1: Too many open files
@deftypevr Macro int EMFILE
@comment errno 24 @c DO NOT REMOVE
The current process has too many files open and can't open any more.
Duplicate descriptors do count toward this limit.
In BSD and GNU, the number of open files is controlled by a resource
limit that can usually be increased. If you get this error, you might
want to increase the @code{RLIMIT_NOFILE} limit or make it unlimited;
@pxref{Limits on Resources}.
@end deftypevr
@comment errno.h
@comment POSIX.1: Too many open files in system
@deftypevr Macro int ENFILE
@comment errno 23 @c DO NOT REMOVE
There are too many distinct file openings in the entire system. Note
that any number of linked channels count as just one file opening; see
@ref{Linked Channels}. This error never occurs in the GNU system.
@end deftypevr
@comment errno.h
@comment POSIX.1: Inappropriate ioctl for device
@deftypevr Macro int ENOTTY
@comment errno 25 @c DO NOT REMOVE
Inappropriate I/O control operation, such as trying to set terminal
modes on an ordinary file.
@end deftypevr
@comment errno.h
@comment BSD: Text file busy
@deftypevr Macro int ETXTBSY
@comment errno 26 @c DO NOT REMOVE
An attempt to execute a file that is currently open for writing, or
write to a file that is currently being executed. Often using a
debugger to run a program is considered having it open for writing and
will cause this error. (The name stands for ``text file busy''.) This
is not an error in the GNU system; the text is copied as necessary.
@end deftypevr
@comment errno.h
@comment POSIX.1: File too large
@deftypevr Macro int EFBIG
@comment errno 27 @c DO NOT REMOVE
File too big; the size of a file would be larger than allowed by the system.
@end deftypevr
@comment errno.h
@comment POSIX.1: No space left on device
@deftypevr Macro int ENOSPC
@comment errno 28 @c DO NOT REMOVE
No space left on device; write operation on a file failed because the
disk is full.
@end deftypevr
@comment errno.h
@comment POSIX.1: Illegal seek
@deftypevr Macro int ESPIPE
@comment errno 29 @c DO NOT REMOVE
Invalid seek operation (such as on a pipe).
@end deftypevr
@comment errno.h
@comment POSIX.1: Read-only file system
@deftypevr Macro int EROFS
@comment errno 30 @c DO NOT REMOVE
An attempt was made to modify something on a read-only file system.
@end deftypevr
@comment errno.h
@comment POSIX.1: Too many links
@deftypevr Macro int EMLINK
@comment errno 31 @c DO NOT REMOVE
Too many links; the link count of a single file would become too large.
@code{rename} can cause this error if the file being renamed already has
as many links as it can take (@pxref{Renaming Files}).
@end deftypevr
@comment errno.h
@comment POSIX.1: Broken pipe
@deftypevr Macro int EPIPE
@comment errno 32 @c DO NOT REMOVE
Broken pipe; there is no process reading from the other end of a pipe.
Every library function that returns this error code also generates a
@code{SIGPIPE} signal; this signal terminates the program if not handled
or blocked. Thus, your program will never actually see @code{EPIPE}
unless it has handled or blocked @code{SIGPIPE}.
@end deftypevr
@comment errno.h
update from main archive 961207 Sun Dec 8 06:56:49 1996 Ulrich Drepper <drepper@cygnus.com> * io/getwd.c: Use PATH_MAX not LOCAL_PATH_MAX. Fix typo in comment. * stdlib/canonicalize.c: Correct bugs in last change. Patch by HJ Lu. * libio/Makefile (routines): Remove ioprims. (aux): Remove cleanup. Add IO_DEBUG option for .o files. * libio/cleanups.c: Removed. * libio/ioprims.c: Removed. * libio/filedoalloc.c: More updates from libg++-2.8b5. * libio/fileops.c: Likewise. * libio/genops.c: Likewise. * libio/iolibio.h: Likewise. * libio/iopopen.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/libio.h: Likewise. * libio/libioP.h: Likewise. * libio/memstream.c: Likewise. * libio/strfile.h: Likewise. * libio/vasprintf.c: Likewise. * libio/vsnprintf.c: Likewise. * libio/stdio.h: Define P_tmpdir only is __USE_SVID. * manual/arith.texi: Change references to ANSI C to ISO C. * manual/conf.texi: Likewise. * manual/creature.texi: Likewise. * manual/ctype.texi: Likewise. * manual/errno.texi: Likewise. * manual/filesys.texi: Likewise. * manual/intro.texi. Likewise. * manual/io.texi: Likewise. * manual/lang.texi: Likewise. * manual/libc.texinfo: Likewise. * manual/locale.texi: Likewise. * manual/maint.texi: Likewise. * manual/mbyte.texi: Likewise. * manual/memory.texi: Likewise. * manual/process.texi: Likewise. * manual/process.texi: Likewise. * manual/search.texi: Likewise. * manual/setjmp.texi: Likewise. * manual/signal.texi: Likewise. * manual/startup.texi: Likewise. * manual/stdio.texi: Likewise. * manual/string.texi: Likewise. * manual/time.texi: Likewise. * manual/locale.texi: Remove description of LC_RESPONSE and add LC_MESSAGES. * Makefile (subdirs): Change malloc in $(malloc). * config.make.in: Add variable malloc which is initialized from @malloc@. * configure.in: Add new option --enable-new-malloc to use new malloc. This is the default on Linux. * sysdeps/unix/sysv/linux/configure.in: Define malloc to new-malloc by default. * new-malloc/Makefile: New file. Improved malloc implementation. * new-malloc/malloc.c: Likewise. * new-malloc/malloc.h: Likewise. * new-malloc/mallocbug.c: Likewise. * new-malloc/obstack.c: Likewise. * new-malloc/obstack.h: Likewise. * new-malloc/thread-m.h: Likewise. * time/Makefile: Compile ap.c with NO_MCHECK flag for now. * time/ap.c: Don't call mcheck if NO_MCHECK is defined. * resolv/Makefile: Add rule to rebuiild libresolv.so when libc.so changed. * stdio/feof.c: Update copyright. * stdio/stdio.h: Add field for lock to FILE structure. Add cast to *MAGIC constants to prevent warnings. * stdio-common/bug7.c: Correct test. Stream must not be closed twice. * stdlib/Makefile (routines): Add secure-getenv. * stdlib/secure-getenv.c: New file. __secure_getenv function moved to here from sysdeps/generic/getenv.c. Otherwise an application cannot replace the getenv function in the libc. * sysdeps/generic/getenv.c: Remove __secure_getenv function. * sysdeps/stub/getenv.c: Remove __secure_getenv alias. * sysdeps/mach/libc-lock.h: Define__libc_mutex_lock to __mutex_lock. * sysdeps/posix/fdopen.c: Update copyright. Don't use EXFUN. * time/test-tz.c: Comment fifth test out. PROBLEM. * time/tzset.c: De-ANSI-declfy. (__tzset): Don't increment pointer tz when no DST information is given. Sat Dec 7 23:47:54 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/libc-lock.h [_LIBC]: Add definition of __libc_mutex_lock. Patch by Thomas Bushnell. * sysdeps/unix/sysv/linux/timebits.h: Load <asm/param.h> only if __USE_MISC. * sysdeps/unix/sysv/linux/Dist: Add llseek.c. Sat Dec 7 12:18:56 1996 Ulrich Drepper <drepper@cygnus.com> * time/strftime (%c format): Remove %Z from default string. Reported by Paul Eggert * io/getwd.c: Don't apply getcwd on user supplied buffer.
1996-12-08 08:01:13 +00:00
@comment ISO: Numerical argument out of domain
1995-02-18 01:27:10 +00:00
@deftypevr Macro int EDOM
@comment errno 33 @c DO NOT REMOVE
Domain error; used by mathematical functions when an argument value does
not fall into the domain over which the function is defined.
@end deftypevr
@comment errno.h
update from main archive 961207 Sun Dec 8 06:56:49 1996 Ulrich Drepper <drepper@cygnus.com> * io/getwd.c: Use PATH_MAX not LOCAL_PATH_MAX. Fix typo in comment. * stdlib/canonicalize.c: Correct bugs in last change. Patch by HJ Lu. * libio/Makefile (routines): Remove ioprims. (aux): Remove cleanup. Add IO_DEBUG option for .o files. * libio/cleanups.c: Removed. * libio/ioprims.c: Removed. * libio/filedoalloc.c: More updates from libg++-2.8b5. * libio/fileops.c: Likewise. * libio/genops.c: Likewise. * libio/iolibio.h: Likewise. * libio/iopopen.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/libio.h: Likewise. * libio/libioP.h: Likewise. * libio/memstream.c: Likewise. * libio/strfile.h: Likewise. * libio/vasprintf.c: Likewise. * libio/vsnprintf.c: Likewise. * libio/stdio.h: Define P_tmpdir only is __USE_SVID. * manual/arith.texi: Change references to ANSI C to ISO C. * manual/conf.texi: Likewise. * manual/creature.texi: Likewise. * manual/ctype.texi: Likewise. * manual/errno.texi: Likewise. * manual/filesys.texi: Likewise. * manual/intro.texi. Likewise. * manual/io.texi: Likewise. * manual/lang.texi: Likewise. * manual/libc.texinfo: Likewise. * manual/locale.texi: Likewise. * manual/maint.texi: Likewise. * manual/mbyte.texi: Likewise. * manual/memory.texi: Likewise. * manual/process.texi: Likewise. * manual/process.texi: Likewise. * manual/search.texi: Likewise. * manual/setjmp.texi: Likewise. * manual/signal.texi: Likewise. * manual/startup.texi: Likewise. * manual/stdio.texi: Likewise. * manual/string.texi: Likewise. * manual/time.texi: Likewise. * manual/locale.texi: Remove description of LC_RESPONSE and add LC_MESSAGES. * Makefile (subdirs): Change malloc in $(malloc). * config.make.in: Add variable malloc which is initialized from @malloc@. * configure.in: Add new option --enable-new-malloc to use new malloc. This is the default on Linux. * sysdeps/unix/sysv/linux/configure.in: Define malloc to new-malloc by default. * new-malloc/Makefile: New file. Improved malloc implementation. * new-malloc/malloc.c: Likewise. * new-malloc/malloc.h: Likewise. * new-malloc/mallocbug.c: Likewise. * new-malloc/obstack.c: Likewise. * new-malloc/obstack.h: Likewise. * new-malloc/thread-m.h: Likewise. * time/Makefile: Compile ap.c with NO_MCHECK flag for now. * time/ap.c: Don't call mcheck if NO_MCHECK is defined. * resolv/Makefile: Add rule to rebuiild libresolv.so when libc.so changed. * stdio/feof.c: Update copyright. * stdio/stdio.h: Add field for lock to FILE structure. Add cast to *MAGIC constants to prevent warnings. * stdio-common/bug7.c: Correct test. Stream must not be closed twice. * stdlib/Makefile (routines): Add secure-getenv. * stdlib/secure-getenv.c: New file. __secure_getenv function moved to here from sysdeps/generic/getenv.c. Otherwise an application cannot replace the getenv function in the libc. * sysdeps/generic/getenv.c: Remove __secure_getenv function. * sysdeps/stub/getenv.c: Remove __secure_getenv alias. * sysdeps/mach/libc-lock.h: Define__libc_mutex_lock to __mutex_lock. * sysdeps/posix/fdopen.c: Update copyright. Don't use EXFUN. * time/test-tz.c: Comment fifth test out. PROBLEM. * time/tzset.c: De-ANSI-declfy. (__tzset): Don't increment pointer tz when no DST information is given. Sat Dec 7 23:47:54 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/libc-lock.h [_LIBC]: Add definition of __libc_mutex_lock. Patch by Thomas Bushnell. * sysdeps/unix/sysv/linux/timebits.h: Load <asm/param.h> only if __USE_MISC. * sysdeps/unix/sysv/linux/Dist: Add llseek.c. Sat Dec 7 12:18:56 1996 Ulrich Drepper <drepper@cygnus.com> * time/strftime (%c format): Remove %Z from default string. Reported by Paul Eggert * io/getwd.c: Don't apply getcwd on user supplied buffer.
1996-12-08 08:01:13 +00:00
@comment ISO: Numerical result out of range
1995-02-18 01:27:10 +00:00
@deftypevr Macro int ERANGE
@comment errno 34 @c DO NOT REMOVE
Range error; used by mathematical functions when the result value is
not representable because of overflow or underflow.
@end deftypevr
@comment errno.h
@comment POSIX.1: Resource temporarily unavailable
@deftypevr Macro int EAGAIN
@comment errno 35 @c DO NOT REMOVE
Resource temporarily unavailable; the call might work if you try again
later. The macro @code{EWOULDBLOCK} is another name for @code{EAGAIN};
they are always the same in the GNU C library.
This error can happen in a few different situations:
@itemize @bullet
@item
An operation that would block was attempted on an object that has
non-blocking mode selected. Trying the same operation again will block
until some external condition makes it possible to read, write, or
connect (whatever the operation). You can use @code{select} to find out
when the operation will be possible; @pxref{Waiting for I/O}.
Update. 1997-08-04 15:29 Ulrich Drepper <drepper@cygnus.com> * locale/programs/localedef.c (main): Set bit in avail for those categories which are successfully read. * locale/programs/locfile.c (check_all_categories): Don't check categories if they are not available. (write_all_categories): Don't write categories if they are not available. * login/setutent_r.c (setutent_unknown): Change return type to int and return result of called function. * manual/arith.texi: Mark floating-point test macro from ISO C 9X as macros (not functions). * manual/libc.texinfo (UPDATED): Update. * manual/math.texi: Document exceptions, functions to handle exceptions, mathematical constants, FP comparison functions and several new functions from ISO C 9X. Change parameter of drand48, lrand48, and mrand48 to void (not empty). * manual/pattern.texi: Remove paragraph which explained that wordexp is executed by running a shell. * manual/time.texi: Explain difficulties with strftime if the functions returns 0 and no error occurred. * math/math.h: Correct comment for some M_* constants. (isgreater, isgreaterequal, isless, islessequal, islessgreater, inunordered): Rewrite to make sure the arguments are evaluated exactly once. * nis/rpcsvc/nis.x: Undo last change. * nis/rpcsvc/nis.h: Likewise. * nis/rpcsvc/nislib.h: File moved back to here. * posix/sys/types.h: Don't define socklen_t. Pretty print. * socket/sys/socket.h (bind, getsockname, connect, sendto, recvfrom, getsockopt, setsockopt, accept): Change size argument to type socklen_t. Pretty print. * manual/socket.texi: Describe socklen_t and change prototypes of socket functions to use socklen_t. * sysdeps/generic/bits/socket.h: Define socklen_t. (struct msghdr): Correct types to use socklen_t. * sysdeps/unix/sysv/linux/bits/socket.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/socket.h: Likewise. * stdio-common/printf_fp.c (__printf_fp): Correct rouding of number 1.0 < x < 8.0. * stdio-common/tfformat.c: Add new tests for above bug. * stdlib/strtod.c: Fix typo. * string/Makefile (headers): Add bits/string.h. (CFLAGS-*): Add -D__NO_STRING_INLINES. * string/string.h: Include <bits/string.h> if optimizing and __NO_STRING_INLINES is not defined. * sysdeps/stub/bits/string.h: New file. * sysdeps/powerpc/bits/fenv.h: Fix typos. * sysdeps/unix/sysv/linux/if_index.c: Let functions return ENOSYS if SIOGIFINDEX is not defined. * sysdeps/wordsize-32/inttypes.h: Pretty print. * sysdeps/wordsize-64/inttypes.h: Pretty print. * termios/cfsetspeed.c: Rewrite loop to do what it shall do. * wcsmbs/Makefile (tests): Add tst-wcstof. * wcsmbs/tst-wcstof.c: New file. 1997-08-01 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/__longjmp.c: Replace call to abort by infinite loop, to avoid dragging stdio into the dynamic linker. 1997-08-02 19:44 H.J. Lu <hjl@gnu.ai.mit.edu> * nis/nis_findserv.c (xid, xid_seed, xid_lookup): Make them u_int32_t. 1997-08-03 Andreas Jaeger <aj@arthur.rhein-neckar.de> * posix/wordexp.c (parse_tilde): Fix calls to __getpwnam_r and __getpwuid_r. Include <stdio.h> to get prototypes of *printf. (exec_comm): Remove unneeded variable *sh. * libc.map: Add wordexp, wordfree. * posix/Makefile (routines): Add wordexp. 1997-08-03 Andreas Jaeger <aj@arthur.rhein-neckar.de> * posix/wordexp.c: Correct typo in comment. (wordexp): Likewise. * manual/errno.texi (Error Codes): Fix typo. 1997-08-03 15:28 Ulrich Drepper <drepper@cygnus.com> * csu/initfini.c (SECTION): Don't put quotes around section name since this is not understood by all assemblers. Patch by Klaus Espenlaub <kespenla@hydra.informatik.uni-ulm.de>.
1997-08-04 14:31:26 +00:00
@strong{Portability Note:} In many older Unix systems, this condition
1995-02-18 01:27:10 +00:00
was indicated by @code{EWOULDBLOCK}, which was a distinct error code
different from @code{EAGAIN}. To make your program portable, you should
check for both codes and treat them the same.
@item
A temporary resource shortage made an operation impossible. @code{fork}
can return this error. It indicates that the shortage is expected to
pass, so your program can try the call again later and it may succeed.
It is probably a good idea to delay for a few seconds before trying it
again, to allow time for other processes to release scarce resources.
Such shortages are usually fairly serious and affect the whole system,
so usually an interactive program should report the error to the user
and return to its command loop.
@end itemize
@end deftypevr
@comment errno.h
@comment BSD: Operation would block
@deftypevr Macro int EWOULDBLOCK
@comment errno EAGAIN @c DO NOT REMOVE
In the GNU C library, this is another name for @code{EAGAIN} (above).
The values are always the same, on every operating system.
C libraries in many older Unix systems have @code{EWOULDBLOCK} as a
separate error code.
@end deftypevr
@comment errno.h
@comment BSD: Operation now in progress
@deftypevr Macro int EINPROGRESS
@comment errno 36 @c DO NOT REMOVE
An operation that cannot complete immediately was initiated on an object
that has non-blocking mode selected. Some functions that must always
block (such as @code{connect}; @pxref{Connecting}) never return
@code{EAGAIN}. Instead, they return @code{EINPROGRESS} to indicate that
the operation has begun and will take some time. Attempts to manipulate
the object before the call completes return @code{EALREADY}. You can
use the @code{select} function to find out when the pending operation
has completed; @pxref{Waiting for I/O}.
@end deftypevr
@comment errno.h
@comment BSD: Operation already in progress
@deftypevr Macro int EALREADY
@comment errno 37 @c DO NOT REMOVE
An operation is already in progress on an object that has non-blocking
mode selected.
@end deftypevr
@comment errno.h
@comment BSD: Socket operation on non-socket
@deftypevr Macro int ENOTSOCK
@comment errno 38 @c DO NOT REMOVE
A file that isn't a socket was specified when a socket is required.
@end deftypevr
@comment errno.h
@comment BSD: Message too long
@deftypevr Macro int EMSGSIZE
@comment errno 40 @c DO NOT REMOVE
The size of a message sent on a socket was larger than the supported
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
1996-05-22 02:11:55 +00:00
maximum size.
1995-02-18 01:27:10 +00:00
@end deftypevr
@comment errno.h
@comment BSD: Protocol wrong type for socket
@deftypevr Macro int EPROTOTYPE
@comment errno 41 @c DO NOT REMOVE
The socket type does not support the requested communications protocol.
@end deftypevr
@comment errno.h
@comment BSD: Protocol not available
@deftypevr Macro int ENOPROTOOPT
@comment errno 42 @c DO NOT REMOVE
You specified a socket option that doesn't make sense for the
particular protocol being used by the socket. @xref{Socket Options}.
@end deftypevr
@comment errno.h
@comment BSD: Protocol not supported
@deftypevr Macro int EPROTONOSUPPORT
@comment errno 43 @c DO NOT REMOVE
The socket domain does not support the requested communications protocol
Update. 1998-06-01 Gordon Matzigkeit <gord@profitpress.com> * hurd/Makefile (routines): Add cthreads. 1998-05-31 Mark Kettenis <kettenis@phys.uva.nl> * login/login.c (login): Let pututline take care of finding the positin to insert the UTMP entry. This corrects a bug where ssh was not reusing UTMP entries marked as DEAD_PROCESS. Reported by Herbert Xu <herbert@gondor.apana.org.au>. 1998-05-31 Mark Kettenis <kettenis@phys.uva.nl> * login/Makefile (tests): New variable, add tst-utmp and tst-utmpx. * login/tst-utmp.c: New file. * login/tst-utmpx.c: New file. 1998-06-01 Gordon Matzigkeit <gord@profitpress.com> * sysdeps/mach/hurd/errlist.c (sys_nerr, _sys_nerr): Make weak aliases for _hurd_nerr, for programs that don't use sys_errlist, but need sys_err. 1998-05-31 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/generic/updwtmpx.c: Rename function to updwtmpx. * libc.map: Add updwtmpx and utmpxname to GLIBC_2.1. 1998-05-31 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/mach/hurd/read.c: Rename function to __libc_read and make __read a weak alias. Use ANSI-style function definition. * sysdeps/mach/hurd/write.c: Likewise. 1998-05-31 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/mach/hurd/err_hurd.sub: Use _hurd_errlist instead of _sys_errlist. 1998-05-30 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/mach/hurd/Makefile ($(objpfx)librtld.os): Renamed from librtld.so. 1998-06-02 Andreas Jaeger <aj@arthur.rhein-neckar.de> * libc.map: Remove _IO_getline_info which was erroneously introduced in section GLIBC_2.0. Noticed by Horst von Brand <vonbrand@sleipnir.valparaiso.cl>. 1998-06-01 Gordon Matzigkeit <gord@profitpress.com> * sysdeps/generic/socket.c (__socket): Renamed from socket, and created a weak alias. * sysdeps/mach/hurd/socket.c (__socket): Likewise. 1998-05-31 Gordon Matzigkeit <gord@profitpress.com> * sysdeps/mach/hurd/ftruncate.c (__ftruncate): Rename from old ftruncate function, and create a weak alias to ftruncate. 1998-06-01 Gordon Matzigkeit <gord@profitpress.com> * grp/fgetgrent_r.c: Use &errno instead of __errno_location (). * inet/getnetgrent_r.c: Likewise. * nss/getXXbyYY_r.c: Likewise. * nss/getXXent_r.c: Likewise. * pwd/fgetpwent_r.c: Likewise. * shadow/sgetspent_r.c: Likewise. * shadow/fgetspent_r.c: Likewise. * sunrpc/publickey.c: Likewise. 1998-06-01 Gordon Matzigkeit <gord@profitpress.com> * hurd/libhurduser.map: New file. * mach/libmachuser.map: Likewise. * libc.map: Add Hurd-specific functions to version 2.1. Add __flshfp and __fillbf. 1998-05-30 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/signal.texi (Basic Signal Handling): Fix typo. * manual/errno.texi (Error Codes): Likewise. 1998-06-02 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/netipx/ipx.h: Include <bits/sockaddr.h> instead of <sys/socket.h>. Patch by NIIBE Yutaka <gniibe@mri.co.jp> * sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c (DL_FIND_ARG_COMPONENTS): Finally make it working. Patch by Mark Hatle <fray@kernel.crashing.org>. 1998-03-22 Paul Eggert <eggert@twinsun.com> * posix/regex.c: Include <wchar.h> before <wctype.h>, to work around a Solaris 2.6 bug.
1998-06-02 12:58:14 +00:00
(perhaps because the requested protocol is completely invalid).
1995-02-18 01:27:10 +00:00
@xref{Creating a Socket}.
@end deftypevr
@comment errno.h
@comment BSD: Socket type not supported
@deftypevr Macro int ESOCKTNOSUPPORT
@comment errno 44 @c DO NOT REMOVE
The socket type is not supported.
@end deftypevr
@comment errno.h
@comment BSD: Operation not supported
@deftypevr Macro int EOPNOTSUPP
@comment errno 45 @c DO NOT REMOVE
The operation you requested is not supported. Some socket functions
don't make sense for all types of sockets, and others may not be
implemented for all communications protocols. In the GNU system, this
error can happen for many calls when the object does not support the
particular operation; it is a generic indication that the server knows
nothing to do for that call.
@end deftypevr
@comment errno.h
@comment BSD: Protocol family not supported
@deftypevr Macro int EPFNOSUPPORT
@comment errno 46 @c DO NOT REMOVE
The socket communications protocol family you requested is not supported.
@end deftypevr
@comment errno.h
@comment BSD: Address family not supported by protocol
1995-02-18 01:27:10 +00:00
@deftypevr Macro int EAFNOSUPPORT
@comment errno 47 @c DO NOT REMOVE
The address family specified for a socket is not supported; it is
inconsistent with the protocol being used on the socket. @xref{Sockets}.
@end deftypevr
@comment errno.h
@comment BSD: Address already in use
@deftypevr Macro int EADDRINUSE
@comment errno 48 @c DO NOT REMOVE
The requested socket address is already in use. @xref{Socket Addresses}.
@end deftypevr
@comment errno.h
@comment BSD: Cannot assign requested address
1995-02-18 01:27:10 +00:00
@deftypevr Macro int EADDRNOTAVAIL
@comment errno 49 @c DO NOT REMOVE
The requested socket address is not available; for example, you tried
to give a socket a name that doesn't match the local host name.
@xref{Socket Addresses}.
@end deftypevr
@comment errno.h
@comment BSD: Network is down
@deftypevr Macro int ENETDOWN
@comment errno 50 @c DO NOT REMOVE
A socket operation failed because the network was down.
@end deftypevr
@comment errno.h
@comment BSD: Network is unreachable
@deftypevr Macro int ENETUNREACH
@comment errno 51 @c DO NOT REMOVE
A socket operation failed because the subnet containing the remote host
was unreachable.
@end deftypevr
@comment errno.h
@comment BSD: Network dropped connection on reset
@deftypevr Macro int ENETRESET
@comment errno 52 @c DO NOT REMOVE
A network connection was reset because the remote host crashed.
@end deftypevr
@comment errno.h
@comment BSD: Software caused connection abort
@deftypevr Macro int ECONNABORTED
@comment errno 53 @c DO NOT REMOVE
A network connection was aborted locally.
@end deftypevr
@comment errno.h
@comment BSD: Connection reset by peer
@deftypevr Macro int ECONNRESET
@comment errno 54 @c DO NOT REMOVE
A network connection was closed for reasons outside the control of the
local host, such as by the remote machine rebooting or an unrecoverable
protocol violation.
@end deftypevr
@comment errno.h
@comment BSD: No buffer space available
@deftypevr Macro int ENOBUFS
@comment errno 55 @c DO NOT REMOVE
The kernel's buffers for I/O operations are all in use. In GNU, this
error is always synonymous with @code{ENOMEM}; you may get one or the
other from network operations.
@end deftypevr
@comment errno.h
@comment BSD: Transport endpoint is already connected
1995-02-18 01:27:10 +00:00
@deftypevr Macro int EISCONN
@comment errno 56 @c DO NOT REMOVE
You tried to connect a socket that is already connected.
@xref{Connecting}.
@end deftypevr
@comment errno.h
@comment BSD: Transport endpoint is not connected
1995-02-18 01:27:10 +00:00
@deftypevr Macro int ENOTCONN
@comment errno 57 @c DO NOT REMOVE
The socket is not connected to anything. You get this error when you
try to transmit data over a socket, without first specifying a
destination for the data. For a connectionless socket (for datagram
protocols, such as UDP), you get @code{EDESTADDRREQ} instead.
@end deftypevr
@comment errno.h
@comment BSD: Destination address required
@deftypevr Macro int EDESTADDRREQ
@comment errno 39 @c DO NOT REMOVE
No default destination address was set for the socket. You get this
error when you try to transmit data over a connectionless socket,
without first specifying a destination for the data with @code{connect}.
@end deftypevr
@comment errno.h
@comment BSD: Cannot send after transport endpoint shutdown
1995-02-18 01:27:10 +00:00
@deftypevr Macro int ESHUTDOWN
@comment errno 58 @c DO NOT REMOVE
The socket has already been shut down.
@end deftypevr
@comment errno.h
@comment BSD: Too many references: cannot splice
1995-02-18 01:27:10 +00:00
@deftypevr Macro int ETOOMANYREFS
@comment errno 59 @c DO NOT REMOVE
???
@end deftypevr
@comment errno.h
@comment BSD: Connection timed out
@deftypevr Macro int ETIMEDOUT
@comment errno 60 @c DO NOT REMOVE
A socket operation with a specified timeout received no response during
the timeout period.
@end deftypevr
@comment errno.h
@comment BSD: Connection refused
@deftypevr Macro int ECONNREFUSED
@comment errno 61 @c DO NOT REMOVE
A remote host refused to allow the network connection (typically because
it is not running the requested service).
@end deftypevr
@comment errno.h
@comment BSD: Too many levels of symbolic links
@deftypevr Macro int ELOOP
@comment errno 62 @c DO NOT REMOVE
Too many levels of symbolic links were encountered in looking up a file name.
This often indicates a cycle of symbolic links.
@end deftypevr
@comment errno.h
@comment POSIX.1: File name too long
@deftypevr Macro int ENAMETOOLONG
@comment errno 63 @c DO NOT REMOVE
Filename too long (longer than @code{PATH_MAX}; @pxref{Limits for
Files}) or host name too long (in @code{gethostname} or
@code{sethostname}; @pxref{Host Identification}).
@end deftypevr
@comment errno.h
@comment BSD: Host is down
@deftypevr Macro int EHOSTDOWN
@comment errno 64 @c DO NOT REMOVE
The remote host for a requested network connection is down.
@end deftypevr
@comment errno.h
@comment BSD: No route to host
@deftypevr Macro int EHOSTUNREACH
@comment errno 65 @c DO NOT REMOVE
The remote host for a requested network connection is not reachable.
@end deftypevr
@comment errno.h
@comment POSIX.1: Directory not empty
@deftypevr Macro int ENOTEMPTY
@comment errno 66 @c DO NOT REMOVE
Directory not empty, where an empty directory was expected. Typically,
this error occurs when you are trying to delete a directory.
@end deftypevr
@comment errno.h
@comment BSD: Too many processes
@deftypevr Macro int EPROCLIM
@comment errno 67 @c DO NOT REMOVE
This means that the per-user limit on new process would be exceeded by
an attempted @code{fork}. @xref{Limits on Resources}, for details on
the @code{RLIMIT_NPROC} limit.
@end deftypevr
@comment errno.h
@comment BSD: Too many users
@deftypevr Macro int EUSERS
@comment errno 68 @c DO NOT REMOVE
The file quota system is confused because there are too many users.
@c This can probably happen in a GNU system when using NFS.
@end deftypevr
@comment errno.h
@comment BSD: Disk quota exceeded
1995-02-18 01:27:10 +00:00
@deftypevr Macro int EDQUOT
@comment errno 69 @c DO NOT REMOVE
The user's disk quota was exceeded.
@end deftypevr
@comment errno.h
@comment BSD: Stale NFS file handle
@deftypevr Macro int ESTALE
@comment errno 70 @c DO NOT REMOVE
Stale NFS file handle. This indicates an internal confusion in the NFS
system which is due to file system rearrangements on the server host.
Repairing this condition usually requires unmounting and remounting
the NFS file system on the local host.
@end deftypevr
@comment errno.h
@comment BSD: Object is remote
1995-02-18 01:27:10 +00:00
@deftypevr Macro int EREMOTE
@comment errno 71 @c DO NOT REMOVE
An attempt was made to NFS-mount a remote file system with a file name that
already specifies an NFS-mounted file.
(This is an error on some operating systems, but we expect it to work
properly on the GNU system, making this error code impossible.)
@end deftypevr
@comment errno.h
@comment BSD: RPC struct is bad
@deftypevr Macro int EBADRPC
@comment errno 72 @c DO NOT REMOVE
???
@end deftypevr
@comment errno.h
@comment BSD: RPC version wrong
@deftypevr Macro int ERPCMISMATCH
@comment errno 73 @c DO NOT REMOVE
???
@end deftypevr
@comment errno.h
@comment BSD: RPC program not available
@deftypevr Macro int EPROGUNAVAIL
@comment errno 74 @c DO NOT REMOVE
???
@end deftypevr
@comment errno.h
@comment BSD: RPC program version wrong
@deftypevr Macro int EPROGMISMATCH
@comment errno 75 @c DO NOT REMOVE
???
@end deftypevr
@comment errno.h
@comment BSD: RPC bad procedure for program
@deftypevr Macro int EPROCUNAVAIL
@comment errno 76 @c DO NOT REMOVE
???
@end deftypevr
@comment errno.h
@comment POSIX.1: No locks available
@deftypevr Macro int ENOLCK
@comment errno 77 @c DO NOT REMOVE
No locks available. This is used by the file locking facilities; see
@ref{File Locks}. This error is never generated by the GNU system, but
it can result from an operation to an NFS server running another
operating system.
@end deftypevr
@comment errno.h
@comment BSD: Inappropriate file type or format
@deftypevr Macro int EFTYPE
@comment errno 79 @c DO NOT REMOVE
Inappropriate file type or format. The file was the wrong type for the
operation, or a data file had the wrong format.
On some systems @code{chmod} returns this error if you try to set the
sticky bit on a non-directory file; @pxref{Setting Permissions}.
@end deftypevr
@comment errno.h
@comment BSD: Authentication error
@deftypevr Macro int EAUTH
@comment errno 80 @c DO NOT REMOVE
???
@end deftypevr
@comment errno.h
@comment BSD: Need authenticator
@deftypevr Macro int ENEEDAUTH
@comment errno 81 @c DO NOT REMOVE
???
@end deftypevr
@comment errno.h
@comment POSIX.1: Function not implemented
@deftypevr Macro int ENOSYS
@comment errno 78 @c DO NOT REMOVE
Function not implemented. This indicates that the function called is
not implemented at all, either in the C library itself or in the
operating system. When you get this error, you can be sure that this
particular function will always fail with @code{ENOSYS} unless you
install a new version of the C library or the operating system.
@end deftypevr
@comment errno.h
@comment POSIX.1: Not supported
@deftypevr Macro int ENOTSUP
@comment errno 118 @c DO NOT REMOVE
Not supported. A function returns this error when certain parameter
values are valid, but the functionality they request is not available.
This can mean that the function does not implement a particular command
or option value or flag bit at all. For functions that operate on some
object given in a parameter, such as a file descriptor or a port, it
might instead mean that only @emph{that specific object} (file
descriptor, port, etc.) is unable to support the other parameters given;
different file descriptors might support different ranges of parameter
values.
If the entire function is not available at all in the implementation,
it returns @code{ENOSYS} instead.
1995-02-18 01:27:10 +00:00
@end deftypevr
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
1996-05-22 02:11:55 +00:00
@comment errno.h
Wed May 22 22:10:01 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * stdlib/canonicalize.c: New file. * stdlib/stdlib.h: Declare canonicalize_file_name, realpath. * stdlib/Makefile (routines): Add canonicalize. * posix/unistd.h: Declare __canonicalize_directory_name_internal. Thu May 23 00:01:10 1996 Ulrich Drepper <drepper@cygnus.com> * db/recno/rec_seq.c: Prevent `sccsid' definition by using the same #if condition as in the other db files. * intl/Makefile: Add -Wno-unused CFLAGS for compilation of bindtextdom.c, finddomain.c, and localealias.c. * intl/dcgettext.c: Don't define prototype for getcwd() when compiling in glibc. * libio/cleanup.c: Add prototype for _IO_register_cleanup. * libio/filedoalloc.c, libio/fileops.c, libio/iopopen.c: Don't define _POSIX_SOURCE unconditionally. * libio/filedoalloc.c, libio/iopopen.c: Include <unistd.h> if compiling in glibc. * libio/fileops.c (_IO_file_close_it): Don't sync file, call flush instead. This relaxes the rules from POSIX.1 about changing the active handle a bit. * libio/iofopncook.c (struct _IO_cookie_file): Move definition into <libio.h>. Add prototypes for local functions to prevent warnings. * libio/iopopen.c: Change prototypes for _IO_fork, _IO_pipe, and _IO_DUP2 to contain complete parameter list. * libio/libio.h: Add definition of struct _IO_cookie_file. * libio/libioP.h: Add prototypes for _IO_vasprintf, _IO_vdprintf, and _IO_vsnprintf. * libio/memstream.c: Include <stdio.h>. * libio/stdio.h: Add prototypes for fopencookie, __stdio_gen_tempname, __vfscanf, __vsscanf, and __vsnprintf. * libio/strops.c: Avoid useless expression in `for' initializer. * locale/findlocale.c: Add some casts to prevent warnings. * locale/programs/locfile.c (write_locale_data): Don't use double `/' in locale binary file. * posix/unistd.h: Remove prototype for `reboot'. Update from bind-4.9.4-T1A. * resolv/Makefile (routines): Add inet_ntop and inet_pton. * resolv/arpa/nameser.h: Add definition of IN6ADDRSZ. * resolv/gethnamaddr.c, resolv/getnetnamadr.c, resolv/res_comp.c, resolv/res_debug.c, resolv/res_init.c * resolv/inet_ntop.c, resolv/inet_pton.c: New files. * resolv/resolv.h: Add RES_USE_INET6 flag. (__dn_isvalid): Renamed to __res_dnok. Add prototypes for __res_ownok and __res_mailok. * stdio-common/Makefile: Add -Wno-unused to CFLAGS for _itoa.c. * stdio-common/getline.c, stdio-common/vfscanf.c, sysdeps/posix/tempname.c: Don't use <ansidecl.h> anymore. * sysdeps/unix/sysv/linux/Makefile [$subdir == misc] (sysdep_routines): Add s_reboot. (install-others): Add $(includedir)/sys/syscall.h. New rule for $(includedir)/sys/syscall.h to produce from <asm/unistd.h>. * sysdeps/unix/sysv/linux/reboot.c: New file. Make single argument function call 3 argument system call. * sysdeps/unix/sysv/linux/sys/reboot.h: New file. Linux specific definition for reboot function. * sysdeps/unix/sysv/linux/syscall.h: Remove old and obsolete comment. * sysdeps/unix/sysv/linux/syscalls.list: Rename function for reboot syscall to __syscall_reboot. * wcsmbs/wchar.h: Protect prototypes for wcstof and wcstold by __USE_GNU, not USE_GNU. Tue May 21 21:55:49 1996 David Mosberger-Tang <davidm@AZStarNet.com> * locale/programs/charset.c, locale/programs/ld-collate.c: Add casts to prevent warnings on 64-bit machines. * locale/programs/ld-monetary.c: Don't do unnecessary tests for int_frac_digits and frac_digits which only produce warnings. Mon May 13 23:45:29 1996 David Mosberger-Tang <davidm@AZStarNet.com> * inet/arpa/inet.h: Backup return type of inet_addr to u_long. * resolv/inet_addr.c: Likewise. * resolv/Makefile (distribute): Add res_hconf.h (routines): Add res_hconf. * resolv/gethnamaddr.c: Add support for /etc/host.conf. * resolv/res_init.c: Initialize /etc/host.conf reader. * resolv/res_hconf.c, resolv/res_hconf.h: New files. Implementation of reading /etc/host.conf. Wed May 22 21:21:15 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * Rules (%.out rules): Prepend $($*-ENV) to the command. * sysdeps/unix/sysv/linux/i386/brk.c (___brk_addr): Define as weak alias for __curbrk. Wed May 22 19:37:27 1996 Miles Bader <miles@gnu.ai.mit.edu> * hurd/hurdexec.c (_hurd_exec): Pass INIT_TRACEMASK. * hurd/hurdmsg.c (set_int): Support INIT_TRACEMASK. Wed May 22 18:47:31 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * sysdeps/mach/hurd/getcwd.c (_hurd_canonicalize_directory_name_internal): New function, broken out of __getcwd. (__getcwd): Use it. (__canonicalize_directory_name_internal): New function using it. * sysdeps/posix/getcwd.c (__canonicalize_directory_name_internal): New function, broken out of __getcwd. (__getcwd): Use it. Wed May 22 18:14:05 1996 Miles Bader <miles@gnu.ai.mit.edu> * string/argz-create.c (__argz_create): Correctly calculate length. * string/argz-extract.c (__argz_extract): Add terminating 0 entry. * hurd/hurdstartup.c (_hurd_startup): ... and don't so here. [HAVE_VMSDIR_H]: Include "vmsdir.h". (glob) [VMS]: Don't grok ~.
1996-05-23 03:15:42 +00:00
@comment ISO: Invalid or incomplete multibyte or wide character
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
1996-05-22 02:11:55 +00:00
@deftypevr Macro int EILSEQ
@comment errno 106 @c DO NOT REMOVE
While decoding a multibyte character the function came along an invalid
or an incomplete sequence of bytes or the given wide character is invalid.
@end deftypevr
1995-02-18 01:27:10 +00:00
@comment errno.h
@comment GNU: Inappropriate operation for background process
@deftypevr Macro int EBACKGROUND
@comment errno 100 @c DO NOT REMOVE
In the GNU system, servers supporting the @code{term} protocol return
this error for certain operations when the caller is not in the
foreground process group of the terminal. Users do not usually see this
error because functions such as @code{read} and @code{write} translate
it into a @code{SIGTTIN} or @code{SIGTTOU} signal. @xref{Job Control},
for information on process groups and these signals.
@end deftypevr
@comment errno.h
@comment GNU: Translator died
@deftypevr Macro int EDIED
@comment errno 101 @c DO NOT REMOVE
In the GNU system, opening a file returns this error when the file is
translated by a program and the translator program dies while starting
up, before it has connected to the file.
@end deftypevr
@comment errno.h
@comment GNU: ?
@deftypevr Macro int ED
@comment errno 102 @c DO NOT REMOVE
The experienced user will know what is wrong.
@c This error code is a joke. Its perror text is part of the joke.
@c Don't change it.
1995-02-18 01:27:10 +00:00
@end deftypevr
@comment errno.h
@comment GNU: You really blew it this time
@deftypevr Macro int EGREGIOUS
@comment errno 103 @c DO NOT REMOVE
You did @strong{what}?
@end deftypevr
@comment errno.h
@comment GNU: Computer bought the farm
@deftypevr Macro int EIEIO
@comment errno 104 @c DO NOT REMOVE
Go home and have a glass of warm, dairy-fresh milk.
@end deftypevr
@comment errno.h
@comment GNU: Gratuitous error
@deftypevr Macro int EGRATUITOUS
@comment errno 105 @c DO NOT REMOVE
This error code has no purpose.
@end deftypevr
@comment errno.h
@comment XOPEN: Bad message
@deftypevr Macro int EBADMSG
@comment errno 107
@end deftypevr
@comment errno.h
@comment XOPEN: Identifier removed
@deftypevr Macro int EIDRM
@comment errno 108
@end deftypevr
@comment errno.h
@comment XOPEN: Multihop attempted
@deftypevr Macro int EMULTIHOP
@comment errno 109
@end deftypevr
@comment errno.h
@comment XOPEN: No data available
@deftypevr Macro int ENODATA
@comment errno 110
@end deftypevr
@comment errno.h
@comment XOPEN: Link has been severed
@deftypevr Macro int ENOLINK
@comment errno 111
@end deftypevr
@comment errno.h
@comment XOPEN: No message of desired type
@deftypevr Macro int ENOMSG
@comment errno 112
@end deftypevr
@comment errno.h
@comment XOPEN: Out of streams resources
@deftypevr Macro int ENOSR
@comment errno 113
@end deftypevr
@comment errno.h
@comment XOPEN: Device not a stream
@deftypevr Macro int ENOSTR
@comment errno 114
@end deftypevr
@comment errno.h
@comment XOPEN: Value too large for defined data type
@deftypevr Macro int EOVERFLOW
@comment errno 115
@end deftypevr
@comment errno.h
@comment XOPEN: Protocol error
@deftypevr Macro int EPROTO
@comment errno 116
@end deftypevr
@comment errno.h
@comment XOPEN: Timer expired
@deftypevr Macro int ETIME
@comment errno 117
@end deftypevr
@comment errno.h
@comment POSIX.1: Operation canceled
@deftypevr Macro int ECANCELED
@comment errno 118
Operation canceled; an asynchronous operation was canceled before it
completed. @xref{Asynchronous I/O}. When you call @code{aio_cancel},
the normal result is for the operations affected to complete with this
error; @pxref{Cancel AIO Operations}.
@end deftypevr
@emph{The following error codes are defined by the Linux/i386 kernel.
They are not yet documented.}
@comment errno.h
@comment Linux???: Interrupted system call should be restarted
@deftypevr Macro int ERESTART
@comment errno ???/85
@end deftypevr
@comment errno.h
@comment Linux???: Channel number out of range
@deftypevr Macro int ECHRNG
@comment errno ???/44
@end deftypevr
@comment errno.h
@comment Obsolete: Level 2 not synchronized
@deftypevr Macro int EL2NSYNC
@comment errno ???/45
@end deftypevr
@comment errno.h
@comment Obsolete: Level 3 halted
@deftypevr Macro int EL3HLT
@comment errno ???/46
@end deftypevr
@comment errno.h
@comment Obsolete: Level 3 reset
@deftypevr Macro int EL3RST
@comment errno ???/47
@end deftypevr
@comment errno.h
@comment Linux???: Link number out of range
@deftypevr Macro int ELNRNG
@comment errno ???/48
@end deftypevr
@comment errno.h
@comment Linux???: Protocol driver not attached
@deftypevr Macro int EUNATCH
@comment errno ???/49
@end deftypevr
@comment errno.h
@comment Linux???: No CSI structure available
@deftypevr Macro int ENOCSI
@comment errno ???/50
@end deftypevr
@comment errno.h
@comment Obsolete: Level 2 halted
@deftypevr Macro int EL2HLT
@comment errno ???/51
@end deftypevr
@comment errno.h
@comment Linux???: Invalid exchange
@deftypevr Macro int EBADE
@comment errno ???/52
@end deftypevr
@comment errno.h
@comment Linux???: Invalid request descriptor
@deftypevr Macro int EBADR
@comment errno ???/53
@end deftypevr
@comment errno.h
@comment Linux???: Exchange full
@deftypevr Macro int EXFULL
@comment errno ???/54
@end deftypevr
@comment errno.h
@comment Linux???: No anode
@deftypevr Macro int ENOANO
@comment errno ???/55
@end deftypevr
@comment errno.h
@comment Linux???: Invalid request code
@deftypevr Macro int EBADRQC
@comment errno ???/56
@end deftypevr
@comment errno.h
@comment Linux???: Invalid slot
@deftypevr Macro int EBADSLT
@comment errno ???/57
@end deftypevr
@comment errno.h
@comment Linux???: File locking deadlock error
@deftypevr Macro int EDEADLOCK
@comment errno ???/58
@end deftypevr
@comment errno.h
@comment Linux???: Bad font file format
@deftypevr Macro int EBFONT
@comment errno ???/59
@end deftypevr
@comment errno.h
@comment Linux???: Machine is not on the network
@deftypevr Macro int ENONET
@comment errno ???/64
@end deftypevr
@comment errno.h
@comment Linux???: Package not installed
@deftypevr Macro int ENOPKG
@comment errno ???/65
@end deftypevr
@comment errno.h
@comment Linux???: Advertise error
@deftypevr Macro int EADV
@comment errno ???/68
@end deftypevr
@comment errno.h
@comment Linux???: Srmount error
@deftypevr Macro int ESRMNT
@comment errno ???/69
@end deftypevr
@comment errno.h
@comment Linux???: Communication error on send
@deftypevr Macro int ECOMM
@comment errno ???/70
@end deftypevr
@comment errno.h
@comment Linux???: RFS specific error
@deftypevr Macro int EDOTDOT
@comment errno ???/73
@end deftypevr
@comment errno.h
@comment Linux???: Name not unique on network
@deftypevr Macro int ENOTUNIQ
@comment errno ???/76
@end deftypevr
@comment errno.h
@comment Linux???: File descriptor in bad state
@deftypevr Macro int EBADFD
@comment errno ???/77
@end deftypevr
@comment errno.h
@comment Linux???: Remote address changed
@deftypevr Macro int EREMCHG
@comment errno ???/78
@end deftypevr
@comment errno.h
@comment Linux???: Can not access a needed shared library
@deftypevr Macro int ELIBACC
@comment errno ???/79
@end deftypevr
@comment errno.h
@comment Linux???: Accessing a corrupted shared library
@deftypevr Macro int ELIBBAD
@comment errno ???/80
@end deftypevr
@comment errno.h
@comment Linux???: .lib section in a.out corrupted
@deftypevr Macro int ELIBSCN
@comment errno ???/81
@end deftypevr
@comment errno.h
@comment Linux???: Attempting to link in too many shared libraries
@deftypevr Macro int ELIBMAX
@comment errno ???/82
@end deftypevr
@comment errno.h
@comment Linux???: Cannot exec a shared library directly
@deftypevr Macro int ELIBEXEC
@comment errno ???/83
@end deftypevr
@comment errno.h
@comment Linux???: Streams pipe error
@deftypevr Macro int ESTRPIPE
@comment errno ???/86
@end deftypevr
@comment errno.h
@comment Linux???: Structure needs cleaning
@deftypevr Macro int EUCLEAN
@comment errno ???/117
@end deftypevr
@comment errno.h
@comment Linux???: Not a XENIX named type file
@deftypevr Macro int ENOTNAM
@comment errno ???/118
@end deftypevr
@comment errno.h
@comment Linux???: No XENIX semaphores available
@deftypevr Macro int ENAVAIL
@comment errno ???/119
@end deftypevr
@comment errno.h
@comment Linux???: Is a named type file
@deftypevr Macro int EISNAM
@comment errno ???/120
@end deftypevr
@comment errno.h
@comment Linux???: Remote I/O error
@deftypevr Macro int EREMOTEIO
@comment errno ???/121
@end deftypevr
1995-02-18 01:27:10 +00:00
Update. 1997-04-02 16:28 Ulrich Drepper <drepper@cygnus.com> * grp/fgetgrent.c: Don't use fixed buffer length. Allow dynamic adjustment if the underlying function say it is too small. * pwd/fgetpwent.c: Likewise. * shadow/fgetspent.c: Likewise. * shadow/sgetspent.c: Likewise. * grp/fgetgrent_r.c (__fgetgrent_r): If `parse_result' returns -1 this means there was not enough room for the gr_mem array. * nss/nss_files/files-XXX.c: Leave loop and return error if `parse_result' returns -1. * nss/nss_files/files-parse.c (parse_line): Return -1 if parsing of trailing list fails because of low memory. (parse_list): Rewrite. The logic was completly incorrect since the checks for overflowing the array were not executed when needed. * shadow/sgetspent_r.c: Only a return value > 0 from parse_line signals success. * nss/getXXbyYY.c: Make sure NULL is returned if we ran out of memory. * nss/getXXent.c: Likewise. * stdlib/strtod.c (SET_MANTISSA): Make sure that at least one bit is set in mantissa. * stdlib/strtof.c: Likewise. * stdlib/strtold.c: Likewise. * wcsmbs/wcstof.c: Likewise. * wcsmbs/wcstold.c: Likewise. * sysdeps/libm-ieee754/s_nan.c: Use strtod is parameter is not empty string. * sysdeps/libm-ieee754/s_nanf.c: Likewise. * sysdeps/libm-ieee754/s_nanld.c: Likewise. 1997-04-02 13:56 Ulrich Drepper <drepper@cygnus.com> * manual/errno.texi: Add description of strerror_r. 1997-04-01 19:07 H.J. Lu (hjl@gnu.ai.mit.edu) * manual/errno.texi: Add ENOMEDIUM and EMEDIUMTYPE. 1997-04-02 13:55 Ulrich Drepper <drepper@cygnus.com> * sysdeps/gnu/errlist.awk: The Texinfo file is named errno.texi. 1997-03-30 10:59 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/s_cexp.c: New file. * sysdeps/m68k/fpu/s_cexpf.c: New file. * sysdeps/m68k/fpu/s_cexpl.c: New file. * sysdeps/m68k/fpu/s_nearbyint.c: New file. * sysdeps/m68k/fpu/s_nearbyintf.c: New file. * sysdeps/m68k/fpu/s_nearbyintl.c: New file. * sysdeps/m68k/fpu/s_trunc.c: New file. * sysdeps/m68k/fpu/s_truncf.c: New file. * sysdeps/m68k/fpu/s_truncl.c: New file. * sysdeps/m68k/fpu/s_modf.c: Rewritten. * sysdeps/m68k/fpu/s_modff.c: Adapted. * sysdeps/m68k/fpu/s_modfl.c: Likewise. * sysdeps/m68k/fpu/e_atan2.c: Use __signbit inline. * sysdeps/m68k/fpu/e_pow.c: Likewise. Write 0.0/0.0 for NaN. Fix typo in test for `y = 0.5'. * sysdeps/m68k/fpu/__math.h: Define __trunc, __signbit, __nearbyint. Remove __modf. * sysdeps/m68k/Makefile (CFLAGS-s_copysignl.c) [$(subdir)=math]: Define for gcc bug workaround. * math/libm-test.c (log2_test): Add epsilon for long double to "log2 (e)" and "log2 (16)". (modf_test): Fix test name. (sqrt_test): Add missing FUNC. 1997-03-29 16:24 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sunrpc/Makefile (CFLAGS-xrquota.c): Fix typo in variable name. 1997-03-28 20:56 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * stdlib/stdlib.h: Declare __clearenv. 1997-03-28 18:03 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/libm-ieee754/s_asinhl.c: Fix Ulrich Dreppers mangling of the last change. 1997-03-28 17:55 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * configure.in: Call AC_CANONICAL_BUILD before referencing $build. Fix test for BUILD_CC. 1997-04-02 01:29 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/libm-ieee754/s_log2f.c (__log2f): Fix typo. 1997-03-31 18:53 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/unix/sysv/linux/net/route.h: Add new IPv6 definitions. 1997-04-01 14:08 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/memset.c: Fix typo. * sysdeps/stub/fchmod.c: Fix typo. * sysdeps/stub/fchdir.c: Fix typo. Reported by Fila Kolodny <fila@ibi.com>.
1997-04-02 14:47:34 +00:00
@comment errno.h
@comment Linux???: No medium found
@deftypevr Macro int ENOMEDIUM
@comment errno ???/???
@end deftypevr
@comment errno.h
@comment Linux???: Wrong medium type
@deftypevr Macro int EMEDIUMTYPE
@comment errno ???/???
@end deftypevr
1995-02-18 01:27:10 +00:00
@node Error Messages, , Error Codes, Error Reporting
@section Error Messages
The library has functions and variables designed to make it easy for
your program to report informative error messages in the customary
format about the failure of a library call. The functions
@code{strerror} and @code{perror} give you the standard error message
for a given error code; the variable
@w{@code{program_invocation_short_name}} gives you convenient access to the
name of the program that encountered the error.
@comment string.h
update from main archive 961207 Sun Dec 8 06:56:49 1996 Ulrich Drepper <drepper@cygnus.com> * io/getwd.c: Use PATH_MAX not LOCAL_PATH_MAX. Fix typo in comment. * stdlib/canonicalize.c: Correct bugs in last change. Patch by HJ Lu. * libio/Makefile (routines): Remove ioprims. (aux): Remove cleanup. Add IO_DEBUG option for .o files. * libio/cleanups.c: Removed. * libio/ioprims.c: Removed. * libio/filedoalloc.c: More updates from libg++-2.8b5. * libio/fileops.c: Likewise. * libio/genops.c: Likewise. * libio/iolibio.h: Likewise. * libio/iopopen.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/libio.h: Likewise. * libio/libioP.h: Likewise. * libio/memstream.c: Likewise. * libio/strfile.h: Likewise. * libio/vasprintf.c: Likewise. * libio/vsnprintf.c: Likewise. * libio/stdio.h: Define P_tmpdir only is __USE_SVID. * manual/arith.texi: Change references to ANSI C to ISO C. * manual/conf.texi: Likewise. * manual/creature.texi: Likewise. * manual/ctype.texi: Likewise. * manual/errno.texi: Likewise. * manual/filesys.texi: Likewise. * manual/intro.texi. Likewise. * manual/io.texi: Likewise. * manual/lang.texi: Likewise. * manual/libc.texinfo: Likewise. * manual/locale.texi: Likewise. * manual/maint.texi: Likewise. * manual/mbyte.texi: Likewise. * manual/memory.texi: Likewise. * manual/process.texi: Likewise. * manual/process.texi: Likewise. * manual/search.texi: Likewise. * manual/setjmp.texi: Likewise. * manual/signal.texi: Likewise. * manual/startup.texi: Likewise. * manual/stdio.texi: Likewise. * manual/string.texi: Likewise. * manual/time.texi: Likewise. * manual/locale.texi: Remove description of LC_RESPONSE and add LC_MESSAGES. * Makefile (subdirs): Change malloc in $(malloc). * config.make.in: Add variable malloc which is initialized from @malloc@. * configure.in: Add new option --enable-new-malloc to use new malloc. This is the default on Linux. * sysdeps/unix/sysv/linux/configure.in: Define malloc to new-malloc by default. * new-malloc/Makefile: New file. Improved malloc implementation. * new-malloc/malloc.c: Likewise. * new-malloc/malloc.h: Likewise. * new-malloc/mallocbug.c: Likewise. * new-malloc/obstack.c: Likewise. * new-malloc/obstack.h: Likewise. * new-malloc/thread-m.h: Likewise. * time/Makefile: Compile ap.c with NO_MCHECK flag for now. * time/ap.c: Don't call mcheck if NO_MCHECK is defined. * resolv/Makefile: Add rule to rebuiild libresolv.so when libc.so changed. * stdio/feof.c: Update copyright. * stdio/stdio.h: Add field for lock to FILE structure. Add cast to *MAGIC constants to prevent warnings. * stdio-common/bug7.c: Correct test. Stream must not be closed twice. * stdlib/Makefile (routines): Add secure-getenv. * stdlib/secure-getenv.c: New file. __secure_getenv function moved to here from sysdeps/generic/getenv.c. Otherwise an application cannot replace the getenv function in the libc. * sysdeps/generic/getenv.c: Remove __secure_getenv function. * sysdeps/stub/getenv.c: Remove __secure_getenv alias. * sysdeps/mach/libc-lock.h: Define__libc_mutex_lock to __mutex_lock. * sysdeps/posix/fdopen.c: Update copyright. Don't use EXFUN. * time/test-tz.c: Comment fifth test out. PROBLEM. * time/tzset.c: De-ANSI-declfy. (__tzset): Don't increment pointer tz when no DST information is given. Sat Dec 7 23:47:54 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/libc-lock.h [_LIBC]: Add definition of __libc_mutex_lock. Patch by Thomas Bushnell. * sysdeps/unix/sysv/linux/timebits.h: Load <asm/param.h> only if __USE_MISC. * sysdeps/unix/sysv/linux/Dist: Add llseek.c. Sat Dec 7 12:18:56 1996 Ulrich Drepper <drepper@cygnus.com> * time/strftime (%c format): Remove %Z from default string. Reported by Paul Eggert * io/getwd.c: Don't apply getcwd on user supplied buffer.
1996-12-08 08:01:13 +00:00
@comment ISO
1995-02-18 01:27:10 +00:00
@deftypefun {char *} strerror (int @var{errnum})
The @code{strerror} function maps the error code (@pxref{Checking for
Errors}) specified by the @var{errnum} argument to a descriptive error
message string. The return value is a pointer to this string.
The value @var{errnum} normally comes from the variable @code{errno}.
You should not modify the string returned by @code{strerror}. Also, if
you make subsequent calls to @code{strerror}, the string might be
overwritten. (But it's guaranteed that no library function ever calls
@code{strerror} behind your back.)
The function @code{strerror} is declared in @file{string.h}.
@end deftypefun
Update. 1997-04-02 16:28 Ulrich Drepper <drepper@cygnus.com> * grp/fgetgrent.c: Don't use fixed buffer length. Allow dynamic adjustment if the underlying function say it is too small. * pwd/fgetpwent.c: Likewise. * shadow/fgetspent.c: Likewise. * shadow/sgetspent.c: Likewise. * grp/fgetgrent_r.c (__fgetgrent_r): If `parse_result' returns -1 this means there was not enough room for the gr_mem array. * nss/nss_files/files-XXX.c: Leave loop and return error if `parse_result' returns -1. * nss/nss_files/files-parse.c (parse_line): Return -1 if parsing of trailing list fails because of low memory. (parse_list): Rewrite. The logic was completly incorrect since the checks for overflowing the array were not executed when needed. * shadow/sgetspent_r.c: Only a return value > 0 from parse_line signals success. * nss/getXXbyYY.c: Make sure NULL is returned if we ran out of memory. * nss/getXXent.c: Likewise. * stdlib/strtod.c (SET_MANTISSA): Make sure that at least one bit is set in mantissa. * stdlib/strtof.c: Likewise. * stdlib/strtold.c: Likewise. * wcsmbs/wcstof.c: Likewise. * wcsmbs/wcstold.c: Likewise. * sysdeps/libm-ieee754/s_nan.c: Use strtod is parameter is not empty string. * sysdeps/libm-ieee754/s_nanf.c: Likewise. * sysdeps/libm-ieee754/s_nanld.c: Likewise. 1997-04-02 13:56 Ulrich Drepper <drepper@cygnus.com> * manual/errno.texi: Add description of strerror_r. 1997-04-01 19:07 H.J. Lu (hjl@gnu.ai.mit.edu) * manual/errno.texi: Add ENOMEDIUM and EMEDIUMTYPE. 1997-04-02 13:55 Ulrich Drepper <drepper@cygnus.com> * sysdeps/gnu/errlist.awk: The Texinfo file is named errno.texi. 1997-03-30 10:59 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/s_cexp.c: New file. * sysdeps/m68k/fpu/s_cexpf.c: New file. * sysdeps/m68k/fpu/s_cexpl.c: New file. * sysdeps/m68k/fpu/s_nearbyint.c: New file. * sysdeps/m68k/fpu/s_nearbyintf.c: New file. * sysdeps/m68k/fpu/s_nearbyintl.c: New file. * sysdeps/m68k/fpu/s_trunc.c: New file. * sysdeps/m68k/fpu/s_truncf.c: New file. * sysdeps/m68k/fpu/s_truncl.c: New file. * sysdeps/m68k/fpu/s_modf.c: Rewritten. * sysdeps/m68k/fpu/s_modff.c: Adapted. * sysdeps/m68k/fpu/s_modfl.c: Likewise. * sysdeps/m68k/fpu/e_atan2.c: Use __signbit inline. * sysdeps/m68k/fpu/e_pow.c: Likewise. Write 0.0/0.0 for NaN. Fix typo in test for `y = 0.5'. * sysdeps/m68k/fpu/__math.h: Define __trunc, __signbit, __nearbyint. Remove __modf. * sysdeps/m68k/Makefile (CFLAGS-s_copysignl.c) [$(subdir)=math]: Define for gcc bug workaround. * math/libm-test.c (log2_test): Add epsilon for long double to "log2 (e)" and "log2 (16)". (modf_test): Fix test name. (sqrt_test): Add missing FUNC. 1997-03-29 16:24 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sunrpc/Makefile (CFLAGS-xrquota.c): Fix typo in variable name. 1997-03-28 20:56 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * stdlib/stdlib.h: Declare __clearenv. 1997-03-28 18:03 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/libm-ieee754/s_asinhl.c: Fix Ulrich Dreppers mangling of the last change. 1997-03-28 17:55 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * configure.in: Call AC_CANONICAL_BUILD before referencing $build. Fix test for BUILD_CC. 1997-04-02 01:29 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/libm-ieee754/s_log2f.c (__log2f): Fix typo. 1997-03-31 18:53 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/unix/sysv/linux/net/route.h: Add new IPv6 definitions. 1997-04-01 14:08 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/memset.c: Fix typo. * sysdeps/stub/fchmod.c: Fix typo. * sysdeps/stub/fchdir.c: Fix typo. Reported by Fila Kolodny <fila@ibi.com>.
1997-04-02 14:47:34 +00:00
@comment string.h
@comment GNU
@deftypefun {char *} strerror_r (int @var{errnum}, char *@var{buf}, size_t @var{n})
The @code{strerror_r} function works like @code{strerror} but instead of
returning the error message in a statically allocated buffer shared by
Update. 1998-02-10 23:57 Ulrich Drepper <drepper@happy.cygnus.com> * misc/tst-efgcvt.c: Add more tests. * misc/efgcvt_r.c: Correct result for above new tests. 1998-02-06 17:22 H.J. Lu <hjl@gnu.org> * misc/efgcvt_r.c (fcvt_r, ecvt_r): Correctly handle NDIGIT <= 0. 1998-02-10 16:48 Philip Blundell <pb@nexus.co.uk> * Makerules (install-no-libc.a-nosubdir): Don't install-bin (etc) if the programs weren't built. 1998-02-09 10:12 Philip Blundell <pb@nexus.co.uk> * sysdeps/libm-ieee754/s_exp2.c (__ieee754_exp2): If we don't have FE_TONEAREST, soldier on regardless and do the best we can. * sysdeps/libm-ieee754/s_exp2f.c (__ieee754_exp2f): likewise. 1998-02-5 17:20 Philip Blundell <pb@nexus.co.uk> * sysdeps/standalone/filedesc.h: Define __need_FOPEN_MAX, not _STDIO_H, before including <bits/stdio_lim.h>. * sysdeps/standalone/arm/bits/errno.h (EOVERFLOW): Added. * io/fts.c (fts_build): Don't try to use d_type if it doesn't exist. * sysdeps/arm/sys/ucontext.h: New file. 1998-02-04 10:11 Philip Blundell <pb@nexus.co.uk> * manual/stdio.texi (Formatted Output Functions): Explicitly say that the return value from snprintf() does not count the terminating NUL as a character. 1998-02-10 16:57 Ulrich Drepper <drepper@happy.cygnus.com> * manual/users.texi: Rewrite to describe correct POSIX behaviour, add description for sete[ug]id and general cleanup. Patch by Zack Weinberg <zack@rabi.phys.columbia.edu>. 1998-01-04 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makefile (parent-clean): Don't remove makefile fragments here. (postclean): New variable. (clean): Remove makefile fragments here. (realclean distclean): Likewise. Pass sysdep-subdirs to sub-make. (generated): Add isomac and isomanc.out. * Makeconfig ($(common-objpfx)soversions.mk): Don't generate if avoid-generated is set. (postclean-generated): Add soversion.mk. ($(common-objpfx)version.mk): Don't include if avoid-generated is set. * Makerules: Still need to include $(+sysdir_pfx)sysd-Makefile if avoid-generated is set. (common-generated): Add libc.so and libc.so$(libc.so-version). (generated): Add versioned libraries. (common-mostlyclean): Also remove %.so and %_pic.a. * csu/Makefile (generated): Add abi-tag.h. * db2/Makefile (extra-objs): Add getlong.o. * elf/Makefile (generated): Add ld.so, ldd and $(rtld-installed-name). (others): Add ldconfig here instead of ldconfig.o to extra-objs. * malloc/Makefile (generated): Add mtrace. * po/Makefile: Don't include version.mk, not needed any more. * sunrpc/Makefile (generated): Add rpc-proto.d and rpcgen. * sysdeps/unix/Makefile: Fix local_lim.h -> bits/local_lim.h, syscall.h -> sys/syscall.h. (common-generated): Add s-proto.d. (postclean-generated): Add sysd-syscalls. * localedata/Makefile (test-output): Add all output files. (generated): Add test-input and test-output. (generated-dirs): Add all the dirs. 1998-01-04 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makefile (test-output, generated, generated-dirs): New variables. 1998-02-10 16:57 Ulrich Drepper <drepper@happy.cygnus.com> * resolv/nss_dns/dns-host.c: Various code cleanups. 1998-02-09 08:10 H.J. Lu <hjl@gnu.org> * resolv/gethnamaddr.c (getanswer): Fix the PTR/CNAME bug. From Philip Blundell <pb@nexus.co.uk>. * resolv/nss_dns/dns-host.c (getanswer_r): Ditto. 1998-02-08 Andreas Jaeger <aj@arthur.rhein-neckar.de> * libc.map: Add .rem, .div, .mul, .udiv, .umul, .urem for Sparc. Suggested by debian/sparc porters. 1998-02-07 Andreas Jaeger <aj@arthur.rhein-neckar.de> * misc/tst-efgcvt.c: Totally rewritten, added a lot of new tests for ecvt and fcvt. 1998-02-10 16:32 Ulrich Drepper <drepper@happy.cygnus.com> * sysdeps/unix/sysv/linux/ptsname.c (__ptsname_r): Use __xstat and __fxstat instead of stat and fstat. Use namespace clean __stpcpy. * signal/signal.h: Always define sigset_t if __need_sigset_t is defined even if __USE_POSIX is not defined. 1998-02-02 20:51 Zack Weinberg <zack@rabi.phys.columbia.edu> * sysdeps/unix/sysv/linux/ptsname.c (__ptsname_r): Correct last patch to support obsolete tty major numbers correctly. 1998-02-02 08:47 H.J. Lu <hjl@gnu.org> * login/Makefile ($(inst_libexecdir)/pt_chown): Make the target directory first and ignore install error. * sysdeps/unix/sysv/linux/ptsname.c (__ptsname_r): Substract 128 from ptyno and fix a typo for the BSD style pty. 1998-02-01 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/Makefile ($(common-objpfx)s-proto.d): Depend on all syscalls.list's. 1998-02-01 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Add getresuid and getresgid. * sysdeps/unix/sysv/linux/getresuid.c: New file. * sysdeps/unix/sysv/linux/getresgid.c: New file. * sysdeps/unix/sysv/linux/syscalls.list: Remove getres[ug]id, add s_getres[ug]id. * sysdeps/unix/sysv/linux/alpha/syscalls.list: Add getres[ug]id. * sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Likewise. 1998-02-02 08:11 H.J. Lu <hjl@gnu.org> * nscd/grpcache.c: Include <stdlib.h>. 1998-02-01 16:01 H.J. Lu <hjl@gnu.org> * stdlib/atoll.c: Fix comments. * sysdeps/posix/ttyname.c: Ignore stdin/stdout/stderr. * sysdeps/posix/ttyname_r.c: Ditto. 1998-02-03 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * io/sys/stat.h: Define S_IFLNK and S_IFSOCK if __USE_BSD or __USE_MISC, independent of __USE_UNIX98. 1998-02-10 19:18 Ulrich Drepper <drepper@happy.cygnus.com> * sysdeps/unix/sysv/linux/i386/sigaction.c (__libc_missing_rt_sigs): Rename from __libc_have_rt_sigs and leave as COMMON data. 1998-02-04 11:58 Richard Henderson <rth@twiddle.rth.home> * Makeconfig (CFLAGS-.os): Kill -fno-common. * Makerules (libc.so): Prelink libc_pic.a, allocating commons. * libc.map (GLIBC_2.1): Add Linux/Alpha tv64 symbols. * elf/rtld.map: New file. Needed to define the GLIBC_2.* version symbols. * include/libc-symbols.h (symbol_version, default_symbol_version): Provide asm versions and correct !DO_VERSIONING versions. * sysdeps/unix/make-syscalls.sh: Recognize version symbols in the weak symbol list. * sysdeps/unix/sysv/linux/sigaction.c (__libc_missing_rt_sigs): Rename from __libc_have_rt_sigs and leave as COMMON data. * sysdeps/unix/sysv/linux/sigpending.c: Likewise. * sysdeps/unix/sysv/linux/sigprocmask.c: Likewise. * sysdeps/unix/sysv/linux/sigsuspend.c: Likewise. 1998-02-04 16:41 Zack Weinberg <zack@rabi.phys.columbia.edu> * sunrpc/Makefile: Correct dependencies of rpcgen. 1998-02-10 03:00 Ulrich Drepper <drepper@happy.cygnus.com> * nscd/Makefile: Fix test for available linuxthreads add-on. Patch by Zack Weinberg <zack@rabi.phys.columbia.edu>. 1998-02-05 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/unix/sysv/linux/syscalls.list: Fix typo in lchown. 1998-02-03 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/gnu/Makefile: Respect with-cvs variable. * manual/errno.texi (Error Messages): Correct description of strerror_r. Pointed out by jonas@bagge.se. 1998-01-29 Andreas Jaeger <aj@arthur.rhein-neckar.de> * manual/socket.texi (Host Address Functions): Clarify description of inet_network. 1998-02-07 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/grantpt.c (argv): Move const to toplevel. (grantpt): Delete superfluous cast. 1998-02-06 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makefile ($(inst_slibdir)/libc-$(version).so): Depend on elf/ldso_install instead of elf/subdir_install. (elf/ldso_install): New target. * elf/Makefile (ldso_install): New target. 1998-02-07 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/powerpc/socket.S: Really do the change of 1998-01-06. 1998-02-07 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * string/bits/string2.h (strcmp): Use __string2_1bptr_p only for constant expressions. 1998-02-07 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * nss/test-netdb.c: Include <unistd.h> for gethostname and "nss.h" for __nss_configure_lookup. (output_hostent): Remove unused variable. 1998-02-07 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * string/tst-inlcall.c: Fix format string. 1998-02-09 Andreas Jaeger <aj@arthur.rhein-neckar.de> * inet/netinet/in.h: Rename second parameter of bindresvport to avoid buggy gcc warning. [PR libc/412]
1998-02-10 20:06:30 +00:00
all threads in the process, it returns a private copy for the
thread. This might be either some permanent global data or a message
string in the user supplied buffer starting at @var{buf} with the
length of @var{n} bytes.
Update. 1997-04-02 16:28 Ulrich Drepper <drepper@cygnus.com> * grp/fgetgrent.c: Don't use fixed buffer length. Allow dynamic adjustment if the underlying function say it is too small. * pwd/fgetpwent.c: Likewise. * shadow/fgetspent.c: Likewise. * shadow/sgetspent.c: Likewise. * grp/fgetgrent_r.c (__fgetgrent_r): If `parse_result' returns -1 this means there was not enough room for the gr_mem array. * nss/nss_files/files-XXX.c: Leave loop and return error if `parse_result' returns -1. * nss/nss_files/files-parse.c (parse_line): Return -1 if parsing of trailing list fails because of low memory. (parse_list): Rewrite. The logic was completly incorrect since the checks for overflowing the array were not executed when needed. * shadow/sgetspent_r.c: Only a return value > 0 from parse_line signals success. * nss/getXXbyYY.c: Make sure NULL is returned if we ran out of memory. * nss/getXXent.c: Likewise. * stdlib/strtod.c (SET_MANTISSA): Make sure that at least one bit is set in mantissa. * stdlib/strtof.c: Likewise. * stdlib/strtold.c: Likewise. * wcsmbs/wcstof.c: Likewise. * wcsmbs/wcstold.c: Likewise. * sysdeps/libm-ieee754/s_nan.c: Use strtod is parameter is not empty string. * sysdeps/libm-ieee754/s_nanf.c: Likewise. * sysdeps/libm-ieee754/s_nanld.c: Likewise. 1997-04-02 13:56 Ulrich Drepper <drepper@cygnus.com> * manual/errno.texi: Add description of strerror_r. 1997-04-01 19:07 H.J. Lu (hjl@gnu.ai.mit.edu) * manual/errno.texi: Add ENOMEDIUM and EMEDIUMTYPE. 1997-04-02 13:55 Ulrich Drepper <drepper@cygnus.com> * sysdeps/gnu/errlist.awk: The Texinfo file is named errno.texi. 1997-03-30 10:59 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/s_cexp.c: New file. * sysdeps/m68k/fpu/s_cexpf.c: New file. * sysdeps/m68k/fpu/s_cexpl.c: New file. * sysdeps/m68k/fpu/s_nearbyint.c: New file. * sysdeps/m68k/fpu/s_nearbyintf.c: New file. * sysdeps/m68k/fpu/s_nearbyintl.c: New file. * sysdeps/m68k/fpu/s_trunc.c: New file. * sysdeps/m68k/fpu/s_truncf.c: New file. * sysdeps/m68k/fpu/s_truncl.c: New file. * sysdeps/m68k/fpu/s_modf.c: Rewritten. * sysdeps/m68k/fpu/s_modff.c: Adapted. * sysdeps/m68k/fpu/s_modfl.c: Likewise. * sysdeps/m68k/fpu/e_atan2.c: Use __signbit inline. * sysdeps/m68k/fpu/e_pow.c: Likewise. Write 0.0/0.0 for NaN. Fix typo in test for `y = 0.5'. * sysdeps/m68k/fpu/__math.h: Define __trunc, __signbit, __nearbyint. Remove __modf. * sysdeps/m68k/Makefile (CFLAGS-s_copysignl.c) [$(subdir)=math]: Define for gcc bug workaround. * math/libm-test.c (log2_test): Add epsilon for long double to "log2 (e)" and "log2 (16)". (modf_test): Fix test name. (sqrt_test): Add missing FUNC. 1997-03-29 16:24 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sunrpc/Makefile (CFLAGS-xrquota.c): Fix typo in variable name. 1997-03-28 20:56 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * stdlib/stdlib.h: Declare __clearenv. 1997-03-28 18:03 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/libm-ieee754/s_asinhl.c: Fix Ulrich Dreppers mangling of the last change. 1997-03-28 17:55 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * configure.in: Call AC_CANONICAL_BUILD before referencing $build. Fix test for BUILD_CC. 1997-04-02 01:29 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/libm-ieee754/s_log2f.c (__log2f): Fix typo. 1997-03-31 18:53 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/unix/sysv/linux/net/route.h: Add new IPv6 definitions. 1997-04-01 14:08 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/memset.c: Fix typo. * sysdeps/stub/fchmod.c: Fix typo. * sysdeps/stub/fchdir.c: Fix typo. Reported by Fila Kolodny <fila@ibi.com>.
1997-04-02 14:47:34 +00:00
At most @var{n} characters are written (including the NUL byte) so it is
up to the user to select the buffer large enough.
This function should always be used in multi-threaded programs since
there is no way to guarantee the string returned by @code{strerror}
really belongs to the last call of the current thread.
This function @code{strerror_r} is a GNU extension and it is declared in
@file{string.h}.
@end deftypefun
1995-02-18 01:27:10 +00:00
@comment stdio.h
update from main archive 961207 Sun Dec 8 06:56:49 1996 Ulrich Drepper <drepper@cygnus.com> * io/getwd.c: Use PATH_MAX not LOCAL_PATH_MAX. Fix typo in comment. * stdlib/canonicalize.c: Correct bugs in last change. Patch by HJ Lu. * libio/Makefile (routines): Remove ioprims. (aux): Remove cleanup. Add IO_DEBUG option for .o files. * libio/cleanups.c: Removed. * libio/ioprims.c: Removed. * libio/filedoalloc.c: More updates from libg++-2.8b5. * libio/fileops.c: Likewise. * libio/genops.c: Likewise. * libio/iolibio.h: Likewise. * libio/iopopen.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/libio.h: Likewise. * libio/libioP.h: Likewise. * libio/memstream.c: Likewise. * libio/strfile.h: Likewise. * libio/vasprintf.c: Likewise. * libio/vsnprintf.c: Likewise. * libio/stdio.h: Define P_tmpdir only is __USE_SVID. * manual/arith.texi: Change references to ANSI C to ISO C. * manual/conf.texi: Likewise. * manual/creature.texi: Likewise. * manual/ctype.texi: Likewise. * manual/errno.texi: Likewise. * manual/filesys.texi: Likewise. * manual/intro.texi. Likewise. * manual/io.texi: Likewise. * manual/lang.texi: Likewise. * manual/libc.texinfo: Likewise. * manual/locale.texi: Likewise. * manual/maint.texi: Likewise. * manual/mbyte.texi: Likewise. * manual/memory.texi: Likewise. * manual/process.texi: Likewise. * manual/process.texi: Likewise. * manual/search.texi: Likewise. * manual/setjmp.texi: Likewise. * manual/signal.texi: Likewise. * manual/startup.texi: Likewise. * manual/stdio.texi: Likewise. * manual/string.texi: Likewise. * manual/time.texi: Likewise. * manual/locale.texi: Remove description of LC_RESPONSE and add LC_MESSAGES. * Makefile (subdirs): Change malloc in $(malloc). * config.make.in: Add variable malloc which is initialized from @malloc@. * configure.in: Add new option --enable-new-malloc to use new malloc. This is the default on Linux. * sysdeps/unix/sysv/linux/configure.in: Define malloc to new-malloc by default. * new-malloc/Makefile: New file. Improved malloc implementation. * new-malloc/malloc.c: Likewise. * new-malloc/malloc.h: Likewise. * new-malloc/mallocbug.c: Likewise. * new-malloc/obstack.c: Likewise. * new-malloc/obstack.h: Likewise. * new-malloc/thread-m.h: Likewise. * time/Makefile: Compile ap.c with NO_MCHECK flag for now. * time/ap.c: Don't call mcheck if NO_MCHECK is defined. * resolv/Makefile: Add rule to rebuiild libresolv.so when libc.so changed. * stdio/feof.c: Update copyright. * stdio/stdio.h: Add field for lock to FILE structure. Add cast to *MAGIC constants to prevent warnings. * stdio-common/bug7.c: Correct test. Stream must not be closed twice. * stdlib/Makefile (routines): Add secure-getenv. * stdlib/secure-getenv.c: New file. __secure_getenv function moved to here from sysdeps/generic/getenv.c. Otherwise an application cannot replace the getenv function in the libc. * sysdeps/generic/getenv.c: Remove __secure_getenv function. * sysdeps/stub/getenv.c: Remove __secure_getenv alias. * sysdeps/mach/libc-lock.h: Define__libc_mutex_lock to __mutex_lock. * sysdeps/posix/fdopen.c: Update copyright. Don't use EXFUN. * time/test-tz.c: Comment fifth test out. PROBLEM. * time/tzset.c: De-ANSI-declfy. (__tzset): Don't increment pointer tz when no DST information is given. Sat Dec 7 23:47:54 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/libc-lock.h [_LIBC]: Add definition of __libc_mutex_lock. Patch by Thomas Bushnell. * sysdeps/unix/sysv/linux/timebits.h: Load <asm/param.h> only if __USE_MISC. * sysdeps/unix/sysv/linux/Dist: Add llseek.c. Sat Dec 7 12:18:56 1996 Ulrich Drepper <drepper@cygnus.com> * time/strftime (%c format): Remove %Z from default string. Reported by Paul Eggert * io/getwd.c: Don't apply getcwd on user supplied buffer.
1996-12-08 08:01:13 +00:00
@comment ISO
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@deftypefun void perror (const char *@var{message})
This function prints an error message to the stream @code{stderr};
see @ref{Standard Streams}. The orientation of @code{stderr} is not
changed.
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If you call @code{perror} with a @var{message} that is either a null
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
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pointer or an empty string, @code{perror} just prints the error message
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corresponding to @code{errno}, adding a trailing newline.
If you supply a non-null @var{message} argument, then @code{perror}
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
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prefixes its output with this string. It adds a colon and a space
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character to separate the @var{message} from the error string corresponding
to @code{errno}.
The function @code{perror} is declared in @file{stdio.h}.
@end deftypefun
@code{strerror} and @code{perror} produce the exact same message for any
given error code; the precise text varies from system to system. On the
GNU system, the messages are fairly short; there are no multi-line
messages or embedded newlines. Each error message begins with a capital
letter and does not include any terminating punctuation.
@strong{Compatibility Note:} The @code{strerror} function was introduced
in @w{ISO C89}. Many older C systems do not support this function yet.
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@cindex program name
@cindex name of running program
Many programs that don't read input from the terminal are designed to
exit if any system call fails. By convention, the error message from
such a program should start with the program's name, sans directories.
You can find that name in the variable
@code{program_invocation_short_name}; the full file name is stored the
variable @code{program_invocation_name}.
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@comment errno.h
@comment GNU
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
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@deftypevar {char *} program_invocation_name
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This variable's value is the name that was used to invoke the program
running in the current process. It is the same as @code{argv[0]}. Note
that this is not necessarily a useful file name; often it contains no
directory names. @xref{Program Arguments}.
@end deftypevar
@comment errno.h
@comment GNU
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
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@deftypevar {char *} program_invocation_short_name
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This variable's value is the name that was used to invoke the program
running in the current process, with directory names removed. (That is
to say, it is the same as @code{program_invocation_name} minus
everything up to the last slash, if any.)
@end deftypevar
The library initialization code sets up both of these variables before
calling @code{main}.
@strong{Portability Note:} These two variables are GNU extensions. If
you want your program to work with non-GNU libraries, you must save the
value of @code{argv[0]} in @code{main}, and then strip off the directory
names yourself. We added these extensions to make it possible to write
self-contained error-reporting subroutines that require no explicit
cooperation from @code{main}.
Here is an example showing how to handle failure to open a file
correctly. The function @code{open_sesame} tries to open the named file
for reading and returns a stream if successful. The @code{fopen}
library function returns a null pointer if it couldn't open the file for
some reason. In that situation, @code{open_sesame} constructs an
appropriate error message using the @code{strerror} function, and
terminates the program. If we were going to make some other library
calls before passing the error code to @code{strerror}, we'd have to
save it in a local variable instead, because those other library
functions might overwrite @code{errno} in the meantime.
@smallexample
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
FILE *
open_sesame (char *name)
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
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@{
1995-02-18 01:27:10 +00:00
FILE *stream;
Wed May 22 01:48:54 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtol.c [!QUAD] (ULONG_MAX, LONG_MAX): Define these macros if they are not available. (WEAKNAME): New macro to declare argument as weak. Define function with __ prefix and add normal name as weak alias. * sysdeps/posix/euidaccess.c (S_IROTH, S_IWOTH, S_IXOTH): Defines these macros if not already available based on R_OK, W_OK, and X_OK. Tue May 21 18:48:46 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * misc/sys/syslog.h (__need___va_list): Define this instead of __need_va_list before including <stdarg.h>. * Makerules (o-iterator): Use $(object-suffixes-left) instead of $(object-suffixes) to produce repetitions; this is used for other lists than just that one. [versioned]: Use $(o-iterator) properly. * sysdeps/unix/sysv/linux/Implies: Include `gnu'. * sysdeps/mach/hurd/Implies: Likewise. Sat May 18 02:57:46 1996 Ulrich Drepper <drepper@cygnus.com> * login/Makefile: New file. This directory contains functions for user administration. * Makefile (subdirs): Add login. * misc/Makefile (headers): Remove utmp.h. Now in login/utmp.h. (extra-libs, libutil-routines): Ditto. * misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c, misc/utmp.h: Moved to misc/. * login/login.c, login/login_tty.c, login/logout.c, login/logwtmp.c, login/utmp.h: Moved to here from misc/. * login/utmp.h: Split file. Definitions of data structures and constants are now in the system dependent utmpbits.h file. * login/setutent_r.c, login/setutent.c, login/endutent_r.c, login/endutent.c, login/getutent_r.c, login/getutent.c, login/getutid_r.c, login/getutid.c, login/getutline_r.c, login/getutline.c, login/pututline_r.c, login/pututline.c: New files. Routines to handle utmp-style files. * sysdeps/gnu/utmpbits.h: New file. Contains GNU/Linux specific definitions of utmp data structures and constants. * sysdeps/unix/sysv/utmpbits.h: Renamed from sysdeps/unix/sysv/utmp.h. * sysdeps/generic/utmpbits.h: New file. Generic (BSDish) version of definitions of utmp data structures and constants. Fri May 17 00:01:31 1996 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Default value for mon_decimal_point should be '.'. * stdio-common/printf.h: Remove Linux libc compatibility stuff. Add `extra' flag. Currently used in __printf_fp. * stdio-common/printf_fp.c (__guess_grouping): Renamed from `guess_grouping' and extend visibility to extern. This function is now used in `strfmon'. (__printf_fp): Recognize new bit flag in info struct. This triggers to use the grouping information and decimal point from the LC_MONETARY category instead of the LC_NUMERIC category. * stdio-common/vfprintf.c (process_arg): Correct major bug. In `complicated' loop we must not use the varargs because the args are already available in the ARGS_VALUE array. * stdlib/Makefile (headers): Add monetary.h. (routines): Add strfmon. * stdlib/monetary.h: New file. Header for strfmon function. * stdlib/strfmon.c: New file. Implement strfmon function to print monetary amounts according to current locale's rules. * sysdeps/unix/sysv/linux/i386/sys/vm86.h: The kernel header is now (>= Linux-1.3.100) called <asm/vm86.h>.
1996-05-22 02:11:55 +00:00
errno = 0;
1995-02-18 01:27:10 +00:00
stream = fopen (name, "r");
if (stream == NULL)
@{
fprintf (stderr, "%s: Couldn't open file %s; %s\n",
program_invocation_short_name, name, strerror (errno));
exit (EXIT_FAILURE);
@}
else
return stream;
@}
@end smallexample
Using @code{perror} has the advantage that the function is portable and
available on all systems implementing @w{ISO C}. But often the text
@code{perror} generates is not what is wanted and there is no way to
extend or change what @code{perror} does. The GNU coding standard, for
instance, requires error messages to be preceded by the program name and
programs which read some input files should should provide information
about the input file name and the line number in case an error is
encountered while reading the file. For these occasions there are two
functions available which are widely used throughout the GNU project.
These functions are declared in @file{error.h}.
@comment error.h
@comment GNU
@deftypefun void error (int @var{status}, int @var{errnum}, const char *@var{format}, @dots{})
The @code{error} function can be used to report general problems during
program execution. The @var{format} argument is a format string just
like those given to the @code{printf} family of functions. The
arguments required for the format can follow the @var{format} parameter.
Just like @code{perror}, @code{error} also can report an error code in
textual form. But unlike @code{perror} the error value is explicitly
passed to the function in the @var{errnum} parameter. This elimintates
the problem mentioned above that the error reporting function must be
called immediately after the function causing the error since otherwise
@code{errno} might have a different value.
The @code{error} prints first the program name. If the application
defined a global variable @code{error_print_progname} and points it to a
function this function will be called to print the program name.
Otherwise the string from the global variable @code{program_name} is
used. The program name is followed by a colon and a space which in turn
is followed by the output produced by the format string. If the
@var{errnum} parameter is non-zero the format string output is followed
by a colon and a space, followed by the error message for the error code
@var{errnum}. In any case is the output terminated with a newline.
The output is directed to the @code{stderr} stream. If the
@code{stderr} wasn't oriented before the call it will be narrow-oriented
afterwards.
The function will return unless the @var{status} parameter has a
non-zero value. In this case the function will call @code{exit} with
the @var{status} value for its parameter and therefore never return. If
@code{error} returns the global variable @code{error_message_count} is
incremented by one to keep track of the number of errors reported.
@end deftypefun
@comment error.h
@comment GNU
@deftypefun void error_at_line (int @var{status}, int @var{errnum}, const char *@var{fname}, unsigned int @var{lineno}, const char *@var{format}, @dots{})
The @code{error_at_line} function is very similar to the @code{error}
function. The only difference are the additional parameters @var{fname}
and @var{lineno}. The handling of the other parameters is identical to
that of @code{error} except that between the program name and the string
generated by the format string additional text is inserted.
Directly following the program name a colon, followed by the file name
pointer to by @var{fname}, another colon, and a value of @var{lineno} is
printed.
This additional output of course is meant to be used to locate an error
in an input file (like a programming language source code file etc).
If the global variable @code{error_one_per_line} is set to a non-zero
value @code{error_at_line} will avoid printing consecutive messages for
the same file anem line. Repetition which are not directly following
each other are not caught.
Just like @code{error} this function only returned if @var{status} is
zero. Otherwise @code{exit} is called with the non-zero value. If
@code{error} returns the global variable @code{error_message_count} is
incremented by one to keep track of the number of errors reported.
@end deftypefun
As mentioned above the @code{error} and @code{error_at_line} functions
can be customized by defining a variable named
@code{error_print_progname}.
@comment error.h
@comment GNU
@deftypevar {void (*} error_print_progname ) (void)
If the @code{error_print_progname} variable is defined to a non-zero
value the function pointed to is called by @code{error} or
@code{error_at_line}. It is expected to print the program name or do
something similarly useful.
The function is expected to be print to the @code{stderr} stream and
must be able to handle whatever orientation the stream has.
The variable is global and shared by all threads.
@end deftypevar
@comment error.h
@comment GNU
@deftypevar {unsigned int} error_message_count
The @code{error_message_count} variable is incremented whenever one of
the functions @code{error} or @code{error_at_line} returns. The
variable is global and shared by all threads.
@end deftypevar
@comment error.h
@comment GNU
@deftypevar int error_one_per_line
The @code{error_one_per_line} variable influences only
@code{error_at_line}. Normally the @code{error_at_line} function
creates output for every invocation. If @code{error_one_per_line} is
set to a non-zero value @code{error_at_line} keeps track of the last
file name and line number for which an error was reported and avoid
directly following messages for the same file and line. This variable
is global and shared by all threads.
@end deftypevar
@noindent
A program which read some input file and reports errors in it could look
like this:
@smallexample
@{
char *line = NULL;
size_t len = 0;
unsigned int lineno = 0;
error_message_count = 0;
while (! feof_unlocked (fp))
@{
ssize_t n = getline (&line, &len, fp);
if (n <= 0)
/* @r{End of file or error.} */
break;
++lineno;
/* @r{Process the line.} */
@dots{}
if (@r{Detect error in line})
error_at_line (0, errval, filename, lineno,
"some error text %s", some_variable);
@}
if (error_message_count != 0)
error (EXIT_FAILURE, 0, "%u errors found", error_message_count);
@}
@end smallexample
@code{error} and @code{error_at_line} are clearly the functions of
choice and enable the programmer to write applications which follow the
GNU coding standard. The GNU libc additionally contains functions which
are used in BSD for the same purpose. These functions are declared in
@file{err.h}. It is generally advised to not use these functions. They
are included only for compatibility.
@comment err.h
@comment BSD
@deftypefun void warn (const char *@var{format}, @dots{})
The @code{warn} function is roughly equivalent to a call like
@smallexample
error (0, errno, format, @r{the parameters})
@end smallexample
@noindent
except that the global variables @code{error} respects and modifies
are not used.
@end deftypefun
@comment err.h
@comment BSD
@deftypefun void vwarn (const char *@var{format}, va_list)
The @code{vwarn} function is just like @code{warn} except that the
parameters for the handling of the format string @var{format} are passed
in as an value of type @code{va_list}.
@end deftypefun
@comment err.h
@comment BSD
@deftypefun void warnx (const char *@var{format}, @dots{})
The @code{warnx} function is roughly equivalent to a call like
@smallexample
error (0, 0, format, @r{the parameters})
@end smallexample
@noindent
except that the global variables @code{error} respects and modifies
are not used. The difference to @code{warn} is that no error number
string is printed.
@end deftypefun
@comment err.h
@comment BSD
@deftypefun void vwarnx (const char *@var{format}, va_list)
The @code{vwarnx} function is just like @code{warnx} except that the
parameters for the handling of the format string @var{format} are passed
in as an value of type @code{va_list}.
@end deftypefun
@comment err.h
@comment BSD
@deftypefun void err (int @var{status}, const char *@var{format}, @dots{})
The @code{err} function is roughly equivalent to a call like
@smallexample
error (status, errno, format, @r{the parameters})
@end smallexample
@noindent
except that the global variables @code{error} respects and modifies
are not used and that the program is exited even if @var{status} is zero.
@end deftypefun
@comment err.h
@comment BSD
@deftypefun void verr (int @var{status}, const char *@var{format}, va_list)
The @code{verr} function is just like @code{err} except that the
parameters for the handling of the format string @var{format} are passed
in as an value of type @code{va_list}.
@end deftypefun
@comment err.h
@comment BSD
@deftypefun void errx (int @var{status}, const char *@var{format}, @dots{})
The @code{errx} function is roughly equivalent to a call like
@smallexample
error (status, 0, format, @r{the parameters})
@end smallexample
@noindent
except that the global variables @code{error} respects and modifies
are not used and that the program is exited even if @var{status}
is zero. The difference to @code{err} is that no error number
string is printed.
@end deftypefun
@comment err.h
@comment BSD
@deftypefun void verrx (int @var{status}, const char *@var{format}, va_list)
The @code{verrx} function is just like @code{errx} except that the
parameters for the handling of the format string @var{format} are passed
in as an value of type @code{va_list}.
@end deftypefun