glibc/time/tzset.c

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/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <ctype.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
/* Defined in mktime.c. */
extern CONST unsigned short int __mon_yday[2][13];
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#define NOID
#include "tzfile.h"
extern int __use_tzfile;
extern void EXFUN(__tzfile_read, (CONST char *file));
extern void EXFUN(__tzfile_default, (char *std AND char *dst AND
long int stdoff AND long int dstoff));
extern int EXFUN(__tzfile_compute, (time_t, struct tm));
char *__tzname[2] = { (char *) "GMT", (char *) "GMT" };
int __daylight = 0;
long int __timezone = 0L;
weak_alias (__tzname, tzname)
weak_alias (__daylight, daylight)
weak_alias (__timezone, timezone)
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#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
#define sign(x) ((x) < 0 ? -1 : 1)
/* This structure contains all the information about a
timezone given in the POSIX standard TZ envariable. */
typedef struct
{
char *name;
/* When to change. */
enum { J0, J1, M } type; /* Interpretation of: */
unsigned short int m, n, d; /* Month, week, day. */
unsigned int secs; /* Time of day. */
long int offset; /* Seconds east of GMT (west if < 0). */
/* We cache the computed time of change for a
given year so we don't have to recompute it. */
time_t change; /* When to change to this zone. */
int computed_for; /* Year above is computed for. */
} tz_rule;
/* tz_rules[0] is standard, tz_rules[1] is daylight. */
static tz_rule tz_rules[2];
int __tzset_run = 0;
/* Interpret the TZ envariable. */
void
DEFUN_VOID(__tzset)
{
register CONST char *tz;
register size_t l;
unsigned short int hh, mm, ss;
unsigned short int whichrule;
/* Free old storage. */
if (tz_rules[0].name != NULL && *tz_rules[0].name != '\0')
Wed May 29 00:57:37 1996 David Mosberger-Tang <davidm@azstarnet.com> * time/Makefile (tests): Add test-tz. * time/test-tz.c: New test. * time/clocktest.c: Rewrite to test more meaningfully. * sysdeps/unix/sysv/linux/syscalls.list: Add bdflush, create_module, delete_module, get_kernel_syms, init_module, klogctl. * sysdeps/unix/sysv/linux/sys/param.h (MAXSYMLINKS): Define as 5 instead of SYMLOOP_MAX, which is nowhere to be found. * sysdeps/unix/sysv/linux/sys/msq_buf.h, sysdeps/unix/sysv/linux/sys/sem_buf.h, sysdeps/unix/sysv/linux/sys/shm_buf.h [__USE_MISC]: Add more control ops and datastructures. * sysdeps/unix/sysv/linux/sys/io.h: New file declaring low-level I/O related functions. * sysdeps/unix/sysv/linux/sys/kdaemon.h: New file declaring kernel daemon related functions/operations. * sysdeps/unix/sysv/linux/sys/klog.h: New file declaring kernel logging related functions/operations. * sysdeps/unix/sysv/linux/sys/module.h: New file declaring kernel module related functions/operations. * sysdeps/unix/sysv/linux/speed.c: Only do "mention this twice" hack for non-Alpha based Linux systems. * sysdeps/unix/sysv/linux/alpha/speed.c: Remove. * sysdeps/unix/sysv/linux/Makefile (headers): Add sys/module.h, sys/io.h, sys/klog.h, and sys/kdaemon.h. * sysdeps/unix/sysdep.h (END): Define empty END macro for platforms that don't need some sort of end directive at the end of functions. * sysdeps/unix/make-syscalls.sh: Emit END($strong) at end of syscall wrapper to allow correct generation of debugging information. * sysdeps/unix/alpha/sysdep.h (END): Redefine to use .end directive for both ELF and ECOFF. (ret): Delete macro. It was a dangerous macro and unnecessary since the Alpha assemblers recognizes "ret" as a macro themselves. * sysdeps/gnu/utmpbits.h (struct utmp): Move ut_tv behind ut_session to guarantee long alignment. This is important for Linux/Alpha since ut_tv.tv_sec is 32 bits and time_t is 64 bits. This will all get cleaned up as programs start to use ut_tv instead ut_time. * sysdeps/alpha/divrem.h: Include <sysdep.h> instead of <*/regdef.h>. * sysdeps/alpha/bsd-_setjmp.S (setjmp): Renamed entry point to _setjmp. * sysdeps/alpha/_mcount.S, sysdeps/alpha/bb_init_func.S, sysdeps/alpha/bsd-_setjmp.S, sysdeps/alpha/bsd-setjmp.S, sysdeps/alpha/copysign.S, sysdeps/alpha/divrem.h, sysdeps/alpha/fabs.S, sysdeps/alpha/ffs.S, sysdeps/alpha/htonl.S, sysdeps/alpha/htons.S, sysdeps/alpha/memchr.S, sysdeps/alpha/setjmp.S, sysdeps/alpha/strlen.S, sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S, sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S, sysdeps/unix/sysv/linux/alpha/llseek.S, sysdeps/unix/sysv/linux/alpha/pipe.S, sysdeps/unix/sysv/linux/alpha/sigsuspend.S, sysdeps/unix/sysv/linux/alpha/sysdep.S: Use END macro instead of .end directive. * csu/initfini.c (_fini): Tell gcc that _fini is not a leaf function by having it contain a dummy function call. * configure.in (config_machine): Don't make ELF the default for Linux/Alpha just yet (use --with-elf instead). (.init/.fini check): Generate .text to ensure function start and end are in same section. * sysdeps/unix/bsd/osf/alpha/brk.S, sysdeps/unix/sysv/linux/alpha/brk.S (__curbrk): Store the entire break value, not just the low 32 bits to accomodate large memories. Tue May 28 10:46:04 1996 Richard Henderson <rth@tamu.edu> * sysdeps/unix/sysv/linux/alpha/brk.S: Rather than attempt to dynamically resolve _end for initializing __curbrk, support the brk(0) query idiom. * sysdeps/alpha/bb_init_func.S: Don't make `init' an external symbol. * sysdeps/alpha/bsd-_setjmp.S: The function is _setjmp not setjmp. Sun May 26 22:17:38 1996 Richard Henderson <rth@tamu.edu> * stdlib/lcong48_r.c, stdlib/seed48_r.c, stdlib/strtod.c, stdlib/strtol.c: Include <string.h> for mem* and str* fns used. Thu May 23 02:15:56 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/Makefile (headers): Add sys/io.h, sys/klog.h, and sys/kdaemon.h. * sysdeps/unix/sysv/linux/sys/io.h: New file. * sysdeps/unix/sysv/linux/sys/klog.h: Ditto. * sysdeps/unix/sysv/linux/sys/kdaemon.h: Ditto. * sysdeps/unix/alpha/sysdep.h (ret): Remove macro. It is dangerous and unnecessary since both OSF/1 as and gas define "ret" as a pseudo-instruction. Sat Jun 1 17:18:21 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * time/tzset.c (__tzset): Clear tz_rules name pointers after freeing them. Bug found by David Mosberger-Tang. * sysdeps/posix/tempname.c (__stdio_gen_tempname): Use __ptr_t instead of PTR. * extra-lib.mk (extra-objs): Use patsubst intead of $(A:=B) syntax to work around Make bug when A contains var ref. Fri May 31 18:27:52 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * string/string.h [__USE_MISC]: Declare basename; OSF/1 puts it here. * sysdeps/unix/sysv/linux/syscalls.list (getpgid, setpgid): Define __ strong names and [gs]etpgid as weak aliases. * math/math_private.h (GET_LDOUBLE_EXP): Add missing backslash.
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{
free((PTR) tz_rules[0].name);
tz_rules[0].name = NULL;
}
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if (tz_rules[1].name != NULL && *tz_rules[1].name != '\0' &&
tz_rules[1].name != tz_rules[0].name)
Wed May 29 00:57:37 1996 David Mosberger-Tang <davidm@azstarnet.com> * time/Makefile (tests): Add test-tz. * time/test-tz.c: New test. * time/clocktest.c: Rewrite to test more meaningfully. * sysdeps/unix/sysv/linux/syscalls.list: Add bdflush, create_module, delete_module, get_kernel_syms, init_module, klogctl. * sysdeps/unix/sysv/linux/sys/param.h (MAXSYMLINKS): Define as 5 instead of SYMLOOP_MAX, which is nowhere to be found. * sysdeps/unix/sysv/linux/sys/msq_buf.h, sysdeps/unix/sysv/linux/sys/sem_buf.h, sysdeps/unix/sysv/linux/sys/shm_buf.h [__USE_MISC]: Add more control ops and datastructures. * sysdeps/unix/sysv/linux/sys/io.h: New file declaring low-level I/O related functions. * sysdeps/unix/sysv/linux/sys/kdaemon.h: New file declaring kernel daemon related functions/operations. * sysdeps/unix/sysv/linux/sys/klog.h: New file declaring kernel logging related functions/operations. * sysdeps/unix/sysv/linux/sys/module.h: New file declaring kernel module related functions/operations. * sysdeps/unix/sysv/linux/speed.c: Only do "mention this twice" hack for non-Alpha based Linux systems. * sysdeps/unix/sysv/linux/alpha/speed.c: Remove. * sysdeps/unix/sysv/linux/Makefile (headers): Add sys/module.h, sys/io.h, sys/klog.h, and sys/kdaemon.h. * sysdeps/unix/sysdep.h (END): Define empty END macro for platforms that don't need some sort of end directive at the end of functions. * sysdeps/unix/make-syscalls.sh: Emit END($strong) at end of syscall wrapper to allow correct generation of debugging information. * sysdeps/unix/alpha/sysdep.h (END): Redefine to use .end directive for both ELF and ECOFF. (ret): Delete macro. It was a dangerous macro and unnecessary since the Alpha assemblers recognizes "ret" as a macro themselves. * sysdeps/gnu/utmpbits.h (struct utmp): Move ut_tv behind ut_session to guarantee long alignment. This is important for Linux/Alpha since ut_tv.tv_sec is 32 bits and time_t is 64 bits. This will all get cleaned up as programs start to use ut_tv instead ut_time. * sysdeps/alpha/divrem.h: Include <sysdep.h> instead of <*/regdef.h>. * sysdeps/alpha/bsd-_setjmp.S (setjmp): Renamed entry point to _setjmp. * sysdeps/alpha/_mcount.S, sysdeps/alpha/bb_init_func.S, sysdeps/alpha/bsd-_setjmp.S, sysdeps/alpha/bsd-setjmp.S, sysdeps/alpha/copysign.S, sysdeps/alpha/divrem.h, sysdeps/alpha/fabs.S, sysdeps/alpha/ffs.S, sysdeps/alpha/htonl.S, sysdeps/alpha/htons.S, sysdeps/alpha/memchr.S, sysdeps/alpha/setjmp.S, sysdeps/alpha/strlen.S, sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S, sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S, sysdeps/unix/sysv/linux/alpha/llseek.S, sysdeps/unix/sysv/linux/alpha/pipe.S, sysdeps/unix/sysv/linux/alpha/sigsuspend.S, sysdeps/unix/sysv/linux/alpha/sysdep.S: Use END macro instead of .end directive. * csu/initfini.c (_fini): Tell gcc that _fini is not a leaf function by having it contain a dummy function call. * configure.in (config_machine): Don't make ELF the default for Linux/Alpha just yet (use --with-elf instead). (.init/.fini check): Generate .text to ensure function start and end are in same section. * sysdeps/unix/bsd/osf/alpha/brk.S, sysdeps/unix/sysv/linux/alpha/brk.S (__curbrk): Store the entire break value, not just the low 32 bits to accomodate large memories. Tue May 28 10:46:04 1996 Richard Henderson <rth@tamu.edu> * sysdeps/unix/sysv/linux/alpha/brk.S: Rather than attempt to dynamically resolve _end for initializing __curbrk, support the brk(0) query idiom. * sysdeps/alpha/bb_init_func.S: Don't make `init' an external symbol. * sysdeps/alpha/bsd-_setjmp.S: The function is _setjmp not setjmp. Sun May 26 22:17:38 1996 Richard Henderson <rth@tamu.edu> * stdlib/lcong48_r.c, stdlib/seed48_r.c, stdlib/strtod.c, stdlib/strtol.c: Include <string.h> for mem* and str* fns used. Thu May 23 02:15:56 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/Makefile (headers): Add sys/io.h, sys/klog.h, and sys/kdaemon.h. * sysdeps/unix/sysv/linux/sys/io.h: New file. * sysdeps/unix/sysv/linux/sys/klog.h: Ditto. * sysdeps/unix/sysv/linux/sys/kdaemon.h: Ditto. * sysdeps/unix/alpha/sysdep.h (ret): Remove macro. It is dangerous and unnecessary since both OSF/1 as and gas define "ret" as a pseudo-instruction. Sat Jun 1 17:18:21 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * time/tzset.c (__tzset): Clear tz_rules name pointers after freeing them. Bug found by David Mosberger-Tang. * sysdeps/posix/tempname.c (__stdio_gen_tempname): Use __ptr_t instead of PTR. * extra-lib.mk (extra-objs): Use patsubst intead of $(A:=B) syntax to work around Make bug when A contains var ref. Fri May 31 18:27:52 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * string/string.h [__USE_MISC]: Declare basename; OSF/1 puts it here. * sysdeps/unix/sysv/linux/syscalls.list (getpgid, setpgid): Define __ strong names and [gs]etpgid as weak aliases. * math/math_private.h (GET_LDOUBLE_EXP): Add missing backslash.
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{
free((PTR) tz_rules[1].name);
tz_rules[1].name = NULL;
}
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Sun May 26 15:15:08 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * stdlib/ldiv.c: Deansideclized. Sun May 26 19:39:53 1996 Ulrich Drepper <drepper@cygnus.com> * intl/loadmsgcat.c (_nl_load_domain): Test correct variable after malloc. * string/Makefile (tester-ENV): New variable to suppress message translation in test. * string/tester.c: Add tests for strtok_r and strsep. * sysdeps/i386/i486/strcat.S: Correct some more 8bit operation <-> 32 bit operand conflicts. * sysdeps/i386/strsep.S: Wrapper around <sysdeps/i386/strtok.S> to produce strsep function. * sysdeps/i386/strtok.S: Optimized implementation of strtok function. * sysdeps/i386/strtok_r.S: Wrapper around <sysdeps/i386/strtok.S> to produce strtok_r function. * sysdeps/generic/strtok.c: Moved here from string/strtok.c. Corrected example in comment. * string/Makefile (routines): Add strtok_r. * sysdeps/generic/strtok_r.c: New file. Implement reentrant version of strtok_r. * string/string.h: Add prototype for strtok_r. * wcsmbs/wcstok.c: Handle illegal SAVE_PTR argument the same as in strtok_r. Sun May 26 13:28:23 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * time/tzset.c (__tzset): Ignore leading : in $TZ; always try tzfile first and fall back to 1003.1 syntax only if it fails. * time/Makefile (install-others): Also install posix/ZONE and right/ZONE for each ZONE in $(zonenames). (z.% rule): Generate rules for right/ZONE and posix/ZONE targets too, the difference begin leapseconds vs /dev/null as 3rd dep. For original ZONE targets use $(leapseconds), to be set in Makeconfig. (target-zone-flavor): New variable. (tzcompile): Use it to get the right -d for posix/ and right/ flavors. * Makeconfig (leapseconds): New variable. * mach/Machrules (%.udeps rule): Depend on Machrules. Emit deps for .uh and .__h files. (%.uh, %.__h rules): Don't depend on %.defs; use #include <$*.defs> instead. Sun May 26 01:06:47 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/Makefile (routines): Add llabs, lldiv. * stdlib/llabs.c: New file. Implementation of return absolute value of long long argument. * stdlib/lldiv.c: New file. Implementation of division with remainder of long long argument. * stdlib/stdlib.h [__USE_GNU] (lldiv_t): New type for lldiv function. Define prototypes for lldiv and llabs functions. * locale/C-collate.c: Initialize _NL_COLLATE_NRULES element. * stdlib/strtod.c: Replace wchar_t with wint_t. The later is really the type for a single wide character. * string/strxfrm.c (print_val): Define separate version for use as wcsxfrm. Here we don't need UTF8 encoding. * wcsmbs/wchar.h: gcc-2.7.2-960517 finally introduces wint_t in <stddef.h>. Use this value and only for older gcc version define in place. (uwchar_t): Remove definition. * wcsmbs/wcscmp.c, wcsmbs/wcscoll.c, wcsmbs/wcsncmp.c, wcsmbs/wcsxfrm.c, wcsmbs/wmemcmp.c: : Don't use uwchar_t as unsigned type. wint_t is intended for this. Sat May 25 14:10:19 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * sysdeps/unix/bsd/direntry.h: Use [1] instead of [0] for d_name to quiet -ansi -pedantic. * sysdeps/unix/common/direntry.h: Likewise. * login/Makefile (headers): Add lastlog.h. * login/lastlog.h: New file. * login/Makefile (CFLAGS): Don't append -D_THREAD_SAFE. * login/utmp.h [_REENTRANT || _THREAD_SAFE]: Replace this conditional with #ifdef __USE_REENTRANT. * features.h (__GNU_LIBRARY__): Set to 6. [_GNU_SOURCE] (_POSIX_SOURCE, _POSIX_C_SOURCE, _BSD_SOURCE, _SVID_SOURCE): Make sure they are all defined. * sysdeps/unix/sysv/linux/gnu/types.h: Instead of including <linux/posix_types.h>, define _LINUX_TYPES_DONT_EXPORT and then include <linux/types.h>. * resource/sys/resource.h: Remove trailing commas from enums. * sysdeps/generic/netinet/in.h: Remove trailing commas from enums. * sysdeps/unix/sysv/linux/netinet/in.h: Likewise.
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/* Examine the TZ environment variable. */
tz = getenv ("TZ");
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Sun May 26 15:15:08 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * stdlib/ldiv.c: Deansideclized. Sun May 26 19:39:53 1996 Ulrich Drepper <drepper@cygnus.com> * intl/loadmsgcat.c (_nl_load_domain): Test correct variable after malloc. * string/Makefile (tester-ENV): New variable to suppress message translation in test. * string/tester.c: Add tests for strtok_r and strsep. * sysdeps/i386/i486/strcat.S: Correct some more 8bit operation <-> 32 bit operand conflicts. * sysdeps/i386/strsep.S: Wrapper around <sysdeps/i386/strtok.S> to produce strsep function. * sysdeps/i386/strtok.S: Optimized implementation of strtok function. * sysdeps/i386/strtok_r.S: Wrapper around <sysdeps/i386/strtok.S> to produce strtok_r function. * sysdeps/generic/strtok.c: Moved here from string/strtok.c. Corrected example in comment. * string/Makefile (routines): Add strtok_r. * sysdeps/generic/strtok_r.c: New file. Implement reentrant version of strtok_r. * string/string.h: Add prototype for strtok_r. * wcsmbs/wcstok.c: Handle illegal SAVE_PTR argument the same as in strtok_r. Sun May 26 13:28:23 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * time/tzset.c (__tzset): Ignore leading : in $TZ; always try tzfile first and fall back to 1003.1 syntax only if it fails. * time/Makefile (install-others): Also install posix/ZONE and right/ZONE for each ZONE in $(zonenames). (z.% rule): Generate rules for right/ZONE and posix/ZONE targets too, the difference begin leapseconds vs /dev/null as 3rd dep. For original ZONE targets use $(leapseconds), to be set in Makeconfig. (target-zone-flavor): New variable. (tzcompile): Use it to get the right -d for posix/ and right/ flavors. * Makeconfig (leapseconds): New variable. * mach/Machrules (%.udeps rule): Depend on Machrules. Emit deps for .uh and .__h files. (%.uh, %.__h rules): Don't depend on %.defs; use #include <$*.defs> instead. Sun May 26 01:06:47 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/Makefile (routines): Add llabs, lldiv. * stdlib/llabs.c: New file. Implementation of return absolute value of long long argument. * stdlib/lldiv.c: New file. Implementation of division with remainder of long long argument. * stdlib/stdlib.h [__USE_GNU] (lldiv_t): New type for lldiv function. Define prototypes for lldiv and llabs functions. * locale/C-collate.c: Initialize _NL_COLLATE_NRULES element. * stdlib/strtod.c: Replace wchar_t with wint_t. The later is really the type for a single wide character. * string/strxfrm.c (print_val): Define separate version for use as wcsxfrm. Here we don't need UTF8 encoding. * wcsmbs/wchar.h: gcc-2.7.2-960517 finally introduces wint_t in <stddef.h>. Use this value and only for older gcc version define in place. (uwchar_t): Remove definition. * wcsmbs/wcscmp.c, wcsmbs/wcscoll.c, wcsmbs/wcsncmp.c, wcsmbs/wcsxfrm.c, wcsmbs/wmemcmp.c: : Don't use uwchar_t as unsigned type. wint_t is intended for this. Sat May 25 14:10:19 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * sysdeps/unix/bsd/direntry.h: Use [1] instead of [0] for d_name to quiet -ansi -pedantic. * sysdeps/unix/common/direntry.h: Likewise. * login/Makefile (headers): Add lastlog.h. * login/lastlog.h: New file. * login/Makefile (CFLAGS): Don't append -D_THREAD_SAFE. * login/utmp.h [_REENTRANT || _THREAD_SAFE]: Replace this conditional with #ifdef __USE_REENTRANT. * features.h (__GNU_LIBRARY__): Set to 6. [_GNU_SOURCE] (_POSIX_SOURCE, _POSIX_C_SOURCE, _BSD_SOURCE, _SVID_SOURCE): Make sure they are all defined. * sysdeps/unix/sysv/linux/gnu/types.h: Instead of including <linux/posix_types.h>, define _LINUX_TYPES_DONT_EXPORT and then include <linux/types.h>. * resource/sys/resource.h: Remove trailing commas from enums. * sysdeps/generic/netinet/in.h: Remove trailing commas from enums. * sysdeps/unix/sysv/linux/netinet/in.h: Likewise.
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if (tz != NULL)
1995-02-18 01:27:10 +00:00
{
Sun May 26 15:15:08 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * stdlib/ldiv.c: Deansideclized. Sun May 26 19:39:53 1996 Ulrich Drepper <drepper@cygnus.com> * intl/loadmsgcat.c (_nl_load_domain): Test correct variable after malloc. * string/Makefile (tester-ENV): New variable to suppress message translation in test. * string/tester.c: Add tests for strtok_r and strsep. * sysdeps/i386/i486/strcat.S: Correct some more 8bit operation <-> 32 bit operand conflicts. * sysdeps/i386/strsep.S: Wrapper around <sysdeps/i386/strtok.S> to produce strsep function. * sysdeps/i386/strtok.S: Optimized implementation of strtok function. * sysdeps/i386/strtok_r.S: Wrapper around <sysdeps/i386/strtok.S> to produce strtok_r function. * sysdeps/generic/strtok.c: Moved here from string/strtok.c. Corrected example in comment. * string/Makefile (routines): Add strtok_r. * sysdeps/generic/strtok_r.c: New file. Implement reentrant version of strtok_r. * string/string.h: Add prototype for strtok_r. * wcsmbs/wcstok.c: Handle illegal SAVE_PTR argument the same as in strtok_r. Sun May 26 13:28:23 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * time/tzset.c (__tzset): Ignore leading : in $TZ; always try tzfile first and fall back to 1003.1 syntax only if it fails. * time/Makefile (install-others): Also install posix/ZONE and right/ZONE for each ZONE in $(zonenames). (z.% rule): Generate rules for right/ZONE and posix/ZONE targets too, the difference begin leapseconds vs /dev/null as 3rd dep. For original ZONE targets use $(leapseconds), to be set in Makeconfig. (target-zone-flavor): New variable. (tzcompile): Use it to get the right -d for posix/ and right/ flavors. * Makeconfig (leapseconds): New variable. * mach/Machrules (%.udeps rule): Depend on Machrules. Emit deps for .uh and .__h files. (%.uh, %.__h rules): Don't depend on %.defs; use #include <$*.defs> instead. Sun May 26 01:06:47 1996 Ulrich Drepper <drepper@cygnus.com> * stdlib/Makefile (routines): Add llabs, lldiv. * stdlib/llabs.c: New file. Implementation of return absolute value of long long argument. * stdlib/lldiv.c: New file. Implementation of division with remainder of long long argument. * stdlib/stdlib.h [__USE_GNU] (lldiv_t): New type for lldiv function. Define prototypes for lldiv and llabs functions. * locale/C-collate.c: Initialize _NL_COLLATE_NRULES element. * stdlib/strtod.c: Replace wchar_t with wint_t. The later is really the type for a single wide character. * string/strxfrm.c (print_val): Define separate version for use as wcsxfrm. Here we don't need UTF8 encoding. * wcsmbs/wchar.h: gcc-2.7.2-960517 finally introduces wint_t in <stddef.h>. Use this value and only for older gcc version define in place. (uwchar_t): Remove definition. * wcsmbs/wcscmp.c, wcsmbs/wcscoll.c, wcsmbs/wcsncmp.c, wcsmbs/wcsxfrm.c, wcsmbs/wmemcmp.c: : Don't use uwchar_t as unsigned type. wint_t is intended for this. Sat May 25 14:10:19 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * sysdeps/unix/bsd/direntry.h: Use [1] instead of [0] for d_name to quiet -ansi -pedantic. * sysdeps/unix/common/direntry.h: Likewise. * login/Makefile (headers): Add lastlog.h. * login/lastlog.h: New file. * login/Makefile (CFLAGS): Don't append -D_THREAD_SAFE. * login/utmp.h [_REENTRANT || _THREAD_SAFE]: Replace this conditional with #ifdef __USE_REENTRANT. * features.h (__GNU_LIBRARY__): Set to 6. [_GNU_SOURCE] (_POSIX_SOURCE, _POSIX_C_SOURCE, _BSD_SOURCE, _SVID_SOURCE): Make sure they are all defined. * sysdeps/unix/sysv/linux/gnu/types.h: Instead of including <linux/posix_types.h>, define _LINUX_TYPES_DONT_EXPORT and then include <linux/types.h>. * resource/sys/resource.h: Remove trailing commas from enums. * sysdeps/generic/netinet/in.h: Remove trailing commas from enums. * sysdeps/unix/sysv/linux/netinet/in.h: Likewise.
1996-05-26 19:19:51 +00:00
/* A leading colon means "implementation defined syntax".
We ignore the colon and always use the same algorithm:
try a data file, and if none exists parse the 1003.1 syntax. */
if (*tz == ':')
++tz;
__tzfile_read (tz);
1995-02-18 01:27:10 +00:00
if (__use_tzfile)
{
__tzset_run = 1;
return;
}
}
if (tz == NULL || *tz == '\0')
{
__tzfile_read((char *) NULL);
if (!__use_tzfile)
{
Sun Mar 5 19:40:13 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * locale/localeinfo.h: Rewritten for new locale system, using locale data files and with <langinfo.h> interface. * locale/setlocale.c: Rewritten to use locale data files. * langinfo.h: New file. * locale/langinfo.h: New file. * locale/nl_langinfo.c: New file. * locale/loadlocale.c: New file. * locale/lc-ctype.c: New file. * locale/lc-messages.c: New file. * locale/lc-monetary.c: New file. * locale/lc-numeric.c: New file. * locale/lc-time.c: New file. * locale/categories.def: New file. * locale/Makefile (headers): Remove localeinfo.h. (distribute): New variable; put localeinfo.h here, and categories.def. (routines): Add loadlocale. (categories): New variable. (aux): Use that to get C-category and lc-category. * ctype/ctype.h (_IS*): Use independent bits for all but _ISalnum. * locale/C-ctype.c, locale/C-messages.c: New files. * locale/C-monetary.c, locale/C-numeric.c, locale/C-time.c: Default "C" locale data updated for new locale system. * locale/C-collate.c: File removed. * locale/C-ctype_ct.c: File removed. * locale/C-ctype_mb.c: File removed. * locale/C-response.c: File removed. * locale/localeconv.c: Use _NL_CURRENT macro to access locale data. * stdio/printf_fp.c, stdio/vfprintf.c, stdio/vfscanf.c, stdlib/strtod.c, time/asctime.c, time/strftime.c: Include ../locale/localeinfo.h and use _NL_CURRENT macro to access locale data. * time/localtime.c: Don't include <localeinfo.h>. * time/tzset.c: Don't use locale items for default TZ value or "GMT" string (use "UTC"). * stdio/vfprintf.c [USE_IN_LIBIO] (PAD): Only call the function if WIDTH>0; update DONE. * malloc/malloc.c (morecore): Fix last change to calculate by blocks instead of bytes.
1995-03-06 03:00:08 +00:00
const char UTC[] = "UTC";
size_t len = sizeof UTC;
1995-02-18 01:27:10 +00:00
tz_rules[0].name = (char *) malloc(len);
if (tz_rules[0].name == NULL)
return;
tz_rules[1].name = (char *) malloc(len);
if (tz_rules[1].name == NULL)
return;
Sun Mar 5 19:40:13 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * locale/localeinfo.h: Rewritten for new locale system, using locale data files and with <langinfo.h> interface. * locale/setlocale.c: Rewritten to use locale data files. * langinfo.h: New file. * locale/langinfo.h: New file. * locale/nl_langinfo.c: New file. * locale/loadlocale.c: New file. * locale/lc-ctype.c: New file. * locale/lc-messages.c: New file. * locale/lc-monetary.c: New file. * locale/lc-numeric.c: New file. * locale/lc-time.c: New file. * locale/categories.def: New file. * locale/Makefile (headers): Remove localeinfo.h. (distribute): New variable; put localeinfo.h here, and categories.def. (routines): Add loadlocale. (categories): New variable. (aux): Use that to get C-category and lc-category. * ctype/ctype.h (_IS*): Use independent bits for all but _ISalnum. * locale/C-ctype.c, locale/C-messages.c: New files. * locale/C-monetary.c, locale/C-numeric.c, locale/C-time.c: Default "C" locale data updated for new locale system. * locale/C-collate.c: File removed. * locale/C-ctype_ct.c: File removed. * locale/C-ctype_mb.c: File removed. * locale/C-response.c: File removed. * locale/localeconv.c: Use _NL_CURRENT macro to access locale data. * stdio/printf_fp.c, stdio/vfprintf.c, stdio/vfscanf.c, stdlib/strtod.c, time/asctime.c, time/strftime.c: Include ../locale/localeinfo.h and use _NL_CURRENT macro to access locale data. * time/localtime.c: Don't include <localeinfo.h>. * time/tzset.c: Don't use locale items for default TZ value or "GMT" string (use "UTC"). * stdio/vfprintf.c [USE_IN_LIBIO] (PAD): Only call the function if WIDTH>0; update DONE. * malloc/malloc.c (morecore): Fix last change to calculate by blocks instead of bytes.
1995-03-06 03:00:08 +00:00
memcpy ((PTR) tz_rules[0].name, UTC, len);
memcpy ((PTR) tz_rules[1].name, UTC, len);
1995-02-18 01:27:10 +00:00
tz_rules[0].type = tz_rules[1].type = J0;
tz_rules[0].m = tz_rules[0].n = tz_rules[0].d = 0;
tz_rules[1].m = tz_rules[1].n = tz_rules[1].d = 0;
tz_rules[0].secs = tz_rules[1].secs = 0;
tz_rules[0].offset = tz_rules[1].offset = 0L;
tz_rules[0].change = tz_rules[1].change = (time_t) -1;
tz_rules[0].computed_for = tz_rules[1].computed_for = 0;
}
__tzset_run = 1;
return;
}
Sun Mar 5 19:40:13 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * locale/localeinfo.h: Rewritten for new locale system, using locale data files and with <langinfo.h> interface. * locale/setlocale.c: Rewritten to use locale data files. * langinfo.h: New file. * locale/langinfo.h: New file. * locale/nl_langinfo.c: New file. * locale/loadlocale.c: New file. * locale/lc-ctype.c: New file. * locale/lc-messages.c: New file. * locale/lc-monetary.c: New file. * locale/lc-numeric.c: New file. * locale/lc-time.c: New file. * locale/categories.def: New file. * locale/Makefile (headers): Remove localeinfo.h. (distribute): New variable; put localeinfo.h here, and categories.def. (routines): Add loadlocale. (categories): New variable. (aux): Use that to get C-category and lc-category. * ctype/ctype.h (_IS*): Use independent bits for all but _ISalnum. * locale/C-ctype.c, locale/C-messages.c: New files. * locale/C-monetary.c, locale/C-numeric.c, locale/C-time.c: Default "C" locale data updated for new locale system. * locale/C-collate.c: File removed. * locale/C-ctype_ct.c: File removed. * locale/C-ctype_mb.c: File removed. * locale/C-response.c: File removed. * locale/localeconv.c: Use _NL_CURRENT macro to access locale data. * stdio/printf_fp.c, stdio/vfprintf.c, stdio/vfscanf.c, stdlib/strtod.c, time/asctime.c, time/strftime.c: Include ../locale/localeinfo.h and use _NL_CURRENT macro to access locale data. * time/localtime.c: Don't include <localeinfo.h>. * time/tzset.c: Don't use locale items for default TZ value or "GMT" string (use "UTC"). * stdio/vfprintf.c [USE_IN_LIBIO] (PAD): Only call the function if WIDTH>0; update DONE. * malloc/malloc.c (morecore): Fix last change to calculate by blocks instead of bytes.
1995-03-06 03:00:08 +00:00
/* Clear out old state and reset to unnamed UTC. */
1995-02-18 01:27:10 +00:00
memset (tz_rules, 0, sizeof tz_rules);
tz_rules[0].name = tz_rules[1].name = (char *) "";
/* Get the standard timezone name. */
tz_rules[0].name = (char *) malloc (strlen (tz) + 1);
if (tz_rules[0].name == NULL)
/* Don't set __tzset_run so we will try again. */
return;
if (sscanf(tz, "%[^0-9,+-]", tz_rules[0].name) != 1 ||
(l = strlen(tz_rules[0].name)) < 3)
{
free (tz_rules[0].name);
tz_rules[0].name = (char *) "";
return;
}
{
char *n = realloc ((PTR) tz_rules[0].name, l + 1);
if (n != NULL)
tz_rules[0].name = n;
}
tz += l;
Sun Mar 5 19:40:13 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * locale/localeinfo.h: Rewritten for new locale system, using locale data files and with <langinfo.h> interface. * locale/setlocale.c: Rewritten to use locale data files. * langinfo.h: New file. * locale/langinfo.h: New file. * locale/nl_langinfo.c: New file. * locale/loadlocale.c: New file. * locale/lc-ctype.c: New file. * locale/lc-messages.c: New file. * locale/lc-monetary.c: New file. * locale/lc-numeric.c: New file. * locale/lc-time.c: New file. * locale/categories.def: New file. * locale/Makefile (headers): Remove localeinfo.h. (distribute): New variable; put localeinfo.h here, and categories.def. (routines): Add loadlocale. (categories): New variable. (aux): Use that to get C-category and lc-category. * ctype/ctype.h (_IS*): Use independent bits for all but _ISalnum. * locale/C-ctype.c, locale/C-messages.c: New files. * locale/C-monetary.c, locale/C-numeric.c, locale/C-time.c: Default "C" locale data updated for new locale system. * locale/C-collate.c: File removed. * locale/C-ctype_ct.c: File removed. * locale/C-ctype_mb.c: File removed. * locale/C-response.c: File removed. * locale/localeconv.c: Use _NL_CURRENT macro to access locale data. * stdio/printf_fp.c, stdio/vfprintf.c, stdio/vfscanf.c, stdlib/strtod.c, time/asctime.c, time/strftime.c: Include ../locale/localeinfo.h and use _NL_CURRENT macro to access locale data. * time/localtime.c: Don't include <localeinfo.h>. * time/tzset.c: Don't use locale items for default TZ value or "GMT" string (use "UTC"). * stdio/vfprintf.c [USE_IN_LIBIO] (PAD): Only call the function if WIDTH>0; update DONE. * malloc/malloc.c (morecore): Fix last change to calculate by blocks instead of bytes.
1995-03-06 03:00:08 +00:00
/* Figure out the standard offset from UTC. */
1995-02-18 01:27:10 +00:00
if (*tz == '\0' || (*tz != '+' && *tz != '-' && !isdigit(*tz)))
return;
if (*tz == '-' || *tz == '+')
tz_rules[0].offset = *tz++ == '-' ? 1L : -1L;
else
tz_rules[0].offset = -1L;
switch (sscanf (tz, "%hu:%hu:%hu", &hh, &mm, &ss))
{
default:
return;
case 1:
mm = 0;
case 2:
ss = 0;
case 3:
break;
}
tz_rules[0].offset *= (min(ss, 59) + (min(mm, 59) * 60) +
(min(hh, 23) * 60 * 60));
1995-02-18 01:27:10 +00:00
for (l = 0; l < 3; ++l)
{
while (isdigit(*tz))
++tz;
if (l < 2 && *tz == ':')
++tz;
}
/* Get the DST timezone name (if any). */
if (*tz != '\0')
{
char *n = malloc (strlen(tz) + 1);
if (n != NULL)
{
tz_rules[1].name = n;
if (sscanf(tz, "%[^0-9,+-]", tz_rules[1].name) != 1 ||
(l = strlen(tz_rules[1].name)) < 3)
{
free (n);
tz_rules[1].name = (char *) "";
goto done_names; /* Punt on name, set up the offsets. */
}
n = realloc ((PTR) tz_rules[1].name, l + 1);
if (n != NULL)
tz_rules[1].name = n;
}
}
tz += l;
/* Figure out the DST offset from GMT. */
if (*tz == '-' || *tz == '+')
tz_rules[1].offset = *tz++ == '-' ? 1L : -1L;
else
tz_rules[1].offset = -1L;
switch (sscanf (tz, "%hu:%hu:%hu", &hh, &mm, &ss))
{
default:
/* Default to one hour later than standard time. */
tz_rules[1].offset = tz_rules[0].offset + (60 * 60);
break;
case 1:
mm = 0;
case 2:
ss = 0;
case 3:
tz_rules[1].offset *= (min(ss, 59) + (min(mm, 59) * 60) +
(min(hh, 23) * (60 * 60)));
1995-02-18 01:27:10 +00:00
break;
}
for (l = 0; l < 3; ++l)
{
while (isdigit (*tz))
++tz;
if (l < 2 && *tz == ':')
++tz;
}
done_names:
if (*tz == '\0' || (tz[0] == ',' && tz[1] == '\0'))
{
/* There is no rule. See if there is a default rule file. */
__tzfile_default (tz_rules[0].name, tz_rules[1].name,
tz_rules[0].offset, tz_rules[1].offset);
if (__use_tzfile)
{
__tzset_run = 1;
return;
}
}
/* Figure out the standard <-> DST rules. */
for (whichrule = 0; whichrule < 2; ++whichrule)
{
register tz_rule *tzr = &tz_rules[whichrule];
1995-02-18 01:27:10 +00:00
if (*tz == ',')
{
++tz;
if (*tz == '\0')
return;
}
1995-02-18 01:27:10 +00:00
/* Get the date of the change. */
if (*tz == 'J' || isdigit (*tz))
{
char *end;
tzr->type = *tz == 'J' ? J1 : J0;
if (tzr->type == J1 && !isdigit (*++tz))
return;
tzr->d = (unsigned short int) strtoul (tz, &end, 10);
if (end == tz || tzr->d > 365)
return;
else if (tzr->type == J1 && tzr->d == 0)
return;
tz = end;
}
else if (*tz == 'M')
{
int n;
tzr->type = M;
if (sscanf (tz, "M%hu.%hu.%hu%n",
&tzr->m, &tzr->n, &tzr->d, &n) != 3 ||
tzr->m < 1 || tzr->m > 12 ||
tzr->n < 1 || tzr->n > 5 || tzr->d > 6)
return;
tz += n;
}
else if (*tz == '\0')
{
/* United States Federal Law, the equivalent of "M4.1.0,M10.5.0". */
tzr->type = M;
if (tzr == &tz_rules[0])
{
tzr->m = 4;
tzr->n = 1;
tzr->d = 0;
}
else
{
tzr->m = 10;
tzr->n = 5;
tzr->d = 0;
}
}
else
return;
1995-02-18 01:27:10 +00:00
if (*tz != '\0' && *tz != '/' && *tz != ',')
return;
else if (*tz == '/')
{
/* Get the time of day of the change. */
++tz;
if (*tz == '\0')
return;
switch (sscanf (tz, "%hu:%hu:%hu", &hh, &mm, &ss))
{
default:
hh = 2; /* Default to 2:00 AM. */
case 1:
mm = 0;
case 2:
ss = 0;
case 3:
break;
}
for (l = 0; l < 3; ++l)
{
while (isdigit(*tz))
++tz;
if (l < 2 && *tz == ':')
++tz;
}
tzr->secs = (hh * 60 * 60) + (mm * 60) + ss;
}
else
/* Default to 2:00 AM. */
tzr->secs = 2 * 60 * 60;
tzr->computed_for = -1;
}
__tzset_run = 1;
}
/* Maximum length of a timezone name. __tz_compute keeps this up to date
(never decreasing it) when ! __use_tzfile.
tzfile.c keeps it up to date when __use_tzfile. */
long int __tzname_cur_max;
long int
DEFUN_VOID(__tzname_max)
{
if (! __tzset_run)
__tzset ();
return __tzname_cur_max;
}
/* Figure out the exact time (as a time_t) in YEAR
when the change described by RULE will occur and
put it in RULE->change, saving YEAR in RULE->computed_for.
Return nonzero if successful, zero on failure. */
static int
DEFUN(compute_change, (rule, year), tz_rule *rule AND int year)
{
register time_t t;
int y;
if (year != -1 && rule->computed_for == year)
/* Operations on times in 1969 will be slower. Oh well. */
return 1;
1995-02-18 01:27:10 +00:00
/* First set T to January 1st, 0:00:00 GMT in YEAR. */
t = 0;
for (y = 1970; y < year; ++y)
t += SECSPERDAY * (__isleap (y) ? 366 : 365);
switch (rule->type)
{
case J1:
/* Jn - Julian day, 1 == January 1, 60 == March 1 even in leap years.
In non-leap years, or if the day number is 59 or less, just
add SECSPERDAY times the day number-1 to the time of
January 1, midnight, to get the day. */
t += (rule->d - 1) * SECSPERDAY;
if (rule->d >= 60 && __isleap (year))
t += SECSPERDAY;
break;
case J0:
/* n - Day of year.
Just add SECSPERDAY times the day number to the time of Jan 1st. */
t += rule->d * SECSPERDAY;
break;
case M:
/* Mm.n.d - Nth "Dth day" of month M. */
{
register int i, d, m1, yy0, yy1, yy2, dow;
register CONST unsigned short int *myday =
&__mon_yday[__isleap (year)][rule->m];
1995-02-18 01:27:10 +00:00
/* First add SECSPERDAY for each day in months before M. */
t += myday[-1] * SECSPERDAY;
1995-02-18 01:27:10 +00:00
/* Use Zeller's Congruence to get day-of-week of first day of month. */
m1 = (rule->m + 9) % 12 + 1;
yy0 = (rule->m <= 2) ? (year - 1) : year;
yy1 = yy0 / 100;
yy2 = yy0 % 100;
dow = ((26 * m1 - 2) / 10 + 1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
if (dow < 0)
dow += 7;
/* DOW is the day-of-week of the first day of the month. Get the
day-of-month (zero-origin) of the first DOW day of the month. */
d = rule->d - dow;
if (d < 0)
d += 7;
for (i = 1; i < rule->n; ++i)
{
if (d + 7 >= myday[0] - myday[-1])
1995-02-18 01:27:10 +00:00
break;
d += 7;
}
/* D is the day-of-month (zero-origin) of the day we want. */
t += d * SECSPERDAY;
}
break;
}
/* T is now the Epoch-relative time of 0:00:00 GMT on the day we want.
Just add the time of day and local offset from GMT, and we're done. */
rule->change = t + rule->offset + rule->secs;
rule->computed_for = year;
return 1;
}
/* Figure out the correct timezone for *TIMER and TM (which must be the same)
and set `__tzname', `__timezone', and `__daylight' accordingly.
Return nonzero on success, zero on failure. */
int
DEFUN(__tz_compute, (timer, tm),
time_t timer AND const struct tm *tm)
{
if (! __tzset_run)
__tzset ();
if (! compute_change (&tz_rules[0], 1900 + tm->tm_year) ||
! compute_change (&tz_rules[1], 1900 + tm->tm_year))
return 0;
__daylight = timer >= tz_rules[0].change && timer < tz_rules[1].change;
__timezone = tz_rules[__daylight ? 1 : 0].offset;
__tzname[0] = (char *) tz_rules[0].name;
__tzname[1] = (char *) tz_rules[1].name;
{
/* Keep __tzname_cur_max up to date. */
size_t len0 = strlen (__tzname[0]);
size_t len1 = strlen (__tzname[1]);
if (len0 > __tzname_cur_max)
__tzname_cur_max = len0;
if (len1 > __tzname_cur_max)
__tzname_cur_max = len1;
}
return 1;
}
weak_alias (__tzset, tzset)