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* 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>.
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/* Copyright (C) 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <alloca.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <utmp.h>
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#include <sys/file.h>
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int
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pututline_r (const struct utmp *utmp_ptr, struct utmp_data *utmp_data)
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{
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/* Open utmp file if not already done. */
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if (utmp_data->ut_fd == -1)
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{
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setutent_r (utmp_data);
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if (utmp_data->ut_fd == -1)
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return -1;
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}
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/* Seek position to write. */
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if (utmp_data->ubuf.ut_type != utmp_ptr->ut_type)
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{
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/* We must not overwrite the data in UTMP_DATA. */
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struct utmp_data *data_tmp = alloca (sizeof (utmp_data));
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struct utmp *dummy;
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memcpy (data_tmp, utmp_data, sizeof (utmp_data));
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utmp_data = data_tmp;
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if (getutid_r (utmp_ptr, &dummy, utmp_data) < 0)
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{
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if (errno != ESRCH)
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return -1;
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utmp_data->loc_utmp = lseek (utmp_data->ut_fd, 0, SEEK_END);
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if (utmp_data->loc_utmp == -1)
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return -1;
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}
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}
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/* Position file correctly. */
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if (utmp_data->loc_utmp > 0
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&& lseek (utmp_data->ut_fd, utmp_data->loc_utmp - sizeof (struct utmp),
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SEEK_SET) < 0)
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return -1;
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/* XXX An alternative solution would be to call an SUID root program
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which write the new value. */
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/* Try to lock the file. */
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if (flock (utmp_data->ut_fd, LOCK_EX | LOCK_NB) < 0 && errno != ENOSYS)
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{
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/* Oh, oh. The file is already locked. Wait a bit and try again. */
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sleep (1);
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/* This time we ignore the error. */
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(void) flock (utmp_data->ut_fd, LOCK_EX | LOCK_NB);
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}
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/* Write the new data. */
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if (write (utmp_data->ut_fd, &utmp_data->ubuf, sizeof (struct utmp))
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!= sizeof (struct utmp))
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return -1;
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/* And unlock the file. */
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(void) flock (utmp_data->ut_fd, LOCK_UN);
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return 0;
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}
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