glibc/sysdeps/unix/sysv/linux/gethostid.c
Roland McGrath 0e3426bbcf Tue May 7 19:00:01 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* string/argz-extract.c: Remove const from decl.
	* string/argz.h: Here too.

	* Makeconfig (version.mk): Fix regexp in sed cmd.
	Depend on $(..)Makeconfig.

	* GMP code updated from gmp-2.0 release.
	* stdlib/Makefile (mpn-routines): Removed add_1, added inlines.
	* sysdeps/generic/add_1.c: File removed.
	* stdlib/strtod.c: mp_limb is now mp_limb_t.
	* stdlib/fpioconst.c, stdlib/fpioconst.h: Likewise.
	* stdio-common/_itoa.c: Likewise.
	* stdio-common/printf_fp.c: Likewise.
	Don't include ansidecl.h.

	* sysdeps/mach/hurd/getcwd.c: Use io_identity instead of io_stat.

	* shlib-versions: New file.
	* Makerules (soversions.mk): New target, include file generated from
	shlib-versions.  Moved shared library rules before installation rules.
	Rewrote shared library installation rules for versioned libraries.
	* math/Makefile (libm.so-version): Variable removed.

	* sysdeps/mach/hurd/i386/exc2signal.c: Use struct hurd_signal_detail.

	* hurd/report-wait.c (_S_msg_describe_ports): New function.

	* configure.in: Add AC_PROG_LN_S check.
	* config.make.in (LN_S): New variable.

Sun May  5 03:10:44 1996  Ulrich Drepper  <drepper@cygnus.com>

	* misc/efgcvt_r.c (ecvt_r): Work aroung gcc bug.  gcc does
	not know about weak aliases now and optimizes necessary `if'
	statement away.

	* posix/unistd.h: Add swapoff prototype.

	* sysdeps/generic/confname.h: Add even more POSIX.4 symbols.

	* sysdeps/posix/fpathconf.c (__fpathconf): Get information
	for _PC_PATH_MAX from fstatfs function if available.

	* sysdeps/posix/sysconf.c: Add code to handle _SC_AIO_LISTIO_MAX,
	_SC_AIO_MAX, _SC_AIO_PRIO_DELTA_MAX, _SC_DELAYTIMER_MAX,
	_SC_MQ_OPEN_MAX, _SC_MQ_PRIO_MAX, _SC_RTSIG_MAX,
	_SC_SEM_NSEMS_MAX, _SC_SEM_VALUE_MAX, _SC_SIGQUEUE_MAX, and
	_SC_TIMER_MAX.
	* sysdeps/unix/sysv/sysv4/sysconf.c: Ditto.

	* sysdeps/stub/swapoff.c: New file.  Stub version for swapoff
	function.

	* sysdeps/unix/syscalls.list:  Add swapoff.

	* sysdeps/unix/sysv/linux/Dist: Add sys/acct.h.

	* sysdeps/unix/sysv/linux/Makefile [$(subdir) == misc]
	(sysdep_routines): Add mount, umount, llseek, setfsgid, setfsuid,
	sysinfo, and uselib.
	(headers): Add sys/sysinfo.h.

	* sysdeps/unix/sysv/linux/gethostid.c: Prevent warning.

	* sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) == misc]
	(sysdep_routines): Add ioperm, iopl, and vm86.
	(headers): Add sys/perm.h and sys/vm86.h.

	* sysdeps/unix/sysv/linux/i386/sys/perm.h: New file.  Contains
	prototypes for iopl and ioperm.

	* sysdeps/unix/sysv/linux/i386/sys/vm86.h:  New file.  Contains
	prototype for vm86.

	* sysdeps/unix/sysv/linux/i386/syscalls.list: New file.  Add
	vm86 system call.

	* sysdeps/unix/sysv/linux/sys/acct.h: New file.  Contains
	prototypes for acct function.

	* sysdeps/unix/sysv/linux/sys/socket.h: Provide real header
	file with prototypes.

	* sysdeps/unix/sysv/linux/sys/sysinfo.h: New file.  Contains
	prototype for sysinfo function.

	* sysdeps/unix/sysv/linux/syscalls.list: Add flock, ioperm, iopl,
	llseek, setfsgid, setfsuid, sysinfo, and uselib.

	* sysdeps/unix/sysv/linux/sysconf.c: Instead of duplicating
	posix/sysconf.c now only handle cases different to that
	implementation.

Tue May  7 15:08:19 1996  Miles Bader  <miles@gnu.ai.mit.edu>

	* stdio/linewrap.c (__line_wrap_output): Renamed from lwoutput
	(all references changed).  Now exported.

	* stdio/linewrap.c (struct data): Type deleted (moved to linewrap.h).
	(wrap_stream, unwrap_stream, lwclose, lwfileno, lwoutput,
	line_wrap_stream, line_unwrap_stream): Use struct line_wrap_data
	instead of struct data.
	(lwoutput, line_wrap_stream, line_unwrap_stream): Rename various
	occurences of `wrap' and `wrapmargin' to `wmargin'.
	(line_wrapped, line_wrap_lmargin, line_wrap_set_lmargin,
	line_wrap_rmargin, line_wrap_set_rmargin, line_wrap_wmargin,
	line_wrap_set_wmargin, line_wrap_point): New functions.
	* stdio/linewrap.h: New file.
	* stdio/Makefile (headers): Add linewrap.h.

Tue May  7 14:19:12 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>

	* sysdeps/unix/sysv/linux/i386/Makefile: File removed.

	* stdio/stdio.h: Remove line_wrap_stream, line_unwap_stream decls.

	* sysdeps/unix/sysv/linux/schedbits.h: New file.

Tue May  7 13:47:02 1996  Miles Bader  <miles@gnu.ai.mit.edu>

	* stdio/linewrap.c (struct data): Make margin fields not-pointers.
	(lwoutput): Adjust uses acordingly.

	* sysdeps/mach/hurd/fdatasync.c: New file.
	* sysdeps/mach/hurd/fsync.c: Pass new flag to file_sync.

	* sysdeps/mach/hurd/xmknod.c: Pass new flag to dir_link.
	* sysdeps/mach/hurd/symlink.c: Likewise.
	* sysdeps/mach/hurd/link.c: Likewise.
	* sysdeps/mach/hurd/bind.c: Likewise.
	* hurd/hurdsig.c (write_corefile): Likewise.

	* hurd/hurdsig.c (write_corefile): Pass cttyid port to crash server.

	* sysdeps/mach/hurd/fpathconf.c: RPC takes int pointer, not long int.

	* sysdeps/mach/hurd/_exit.c (_hurd_exit): Pass sigcode arg to
	proc_mark_exit.
	* sysdeps/mach/hurd/dl-sysdep.c (_exit): Likewise.

	* sysdeps/mach/hurd/wait4.c: Pass sigcode arg to proc_wait.

	* sysdeps/mach/hurd/rename.c: Pass new flag to dir_rename.

	* hurd/hurdfault.c (_hurdsig_fault_catch_exception_raise): Use struct
	hurd_signal_detail.
	* hurd/catch-exc.c (_S_catch_exception_raise): Likewise.
	* hurd/hurd-raise.c (_hurd_raise_signal): Likewise.
	* sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler):
	Likewise.
	* sysdeps/mach/hurd/setitimer.c (restart_itimer): Likewise.

	* hurd/hurd/signal.h: Fix _hurd_exception2signal prototype.

	* hurd/hurdsig.c (write_corefile): Take const struct
	hurd_signal_detail * arg.  Pass all details to crash_dump_task.
	(_hurd_internal_post_signal): Pass DETAIL to write_corefile.
	(_hurd_internal_post_signal: suspend): Pass code and error to
	proc_mark_stop.

	* hurd/hurdprio.c (_hurd_priority_which_map): Pass flags arg to
	proc_getprocinfo by reference.
1996-05-08 02:07:47 +00:00

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2.5 KiB
C

/* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#define HOSTIDFILE "/var/adm/hostid"
#ifdef SET_PROCEDURE
int
sethostid (id)
long int id;
{
int fd;
ssize_t written;
/* Test for appropriate rights to set host ID. */
if (geteuid () || getuid ())
{
errno = EPERM;
return -1;
}
/* Open file for writing. Everybody is allowed to read this file. */
fd = __open (HOSTIDFILE, O_CREAT|O_WRONLY, 0644);
if (fd < 0)
return -1;
written = __write (fd, &id, sizeof (id));
__close (fd);
return written != sizeof (id) ? -1 : 0;
}
#else
# include <sys/param.h>
# include <resolv/netdb.h>
# include <netinet/in.h>
long int
gethostid ()
{
char hostname[MAXHOSTNAMELEN + 1];
struct hostent *hp;
unsigned long id;
struct in_addr in;
int fd;
/* First try to get the ID from a former invocation of sethostid. */
fd = __open (HOSTIDFILE, O_RDONLY);
if (fd >= 0)
{
ssize_t n = __read (fd, &id, sizeof (id));
__close (fd);
if (n == sizeof (id))
return id;
}
/* Getting from the file was not succesful. An intelligent guess for
a unique number of a host is its IP address. Return this. */
if (gethostname (hostname, MAXHOSTNAMELEN) < 0 || hostname[0] == '\0')
/* This also fails. Return and arbitrary value. */
return 0;
/* To get the IP address we need to know the host name. */
hp = gethostbyname (hostname);
if (hp == NULL)
return 0;
in.s_addr = 0;
memcpy (&in, hp->h_addr,
(int) sizeof (in) < hp->h_length ? sizeof (in) : hp->h_length);
/* For the return value to be not exactly the IP address we do some
bit fiddling. */
return in.s_addr << 16 | in.s_addr >> 16;
}
#endif