1 /* Copyright (C) 1998, 2001, 2002, 2003 Free Software Foundation, Inc.
3 This program is free software; you can redistribute it and/or modify it
4 under the terms of the GNU General Public License as published by the
5 Free Software Foundation; either version 2, or (at your option) any
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software Foundation,
15 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17 /* derived from a function in touch.c */
24 #include <sys/types.h>
31 # include <sys/stat.h>
41 #include "full-write.h"
42 #include "safe-read.h"
44 /* Some systems (even some that do have <utime.h>) don't declare this
45 structure anywhere. */
46 #ifndef HAVE_STRUCT_UTIMBUF
54 /* Emulate utime (file, NULL) for systems (like 4.3BSD) that do not
55 interpret it to set the access and modification times of FILE to
56 the current time. Return 0 if successful, -1 if not. */
59 utime_null (const char *file)
62 return utimes (file, 0);
70 fd = open (file, O_RDWR);
72 || fstat (fd, &st) < 0
73 || safe_read (fd, &c, sizeof c) == SAFE_READ_ERROR
74 || lseek (fd, (off_t) 0, SEEK_SET) < 0
75 || full_write (fd, &c, sizeof c) != sizeof c
76 /* Maybe do this -- it's necessary on SunOS 4.1.3 with some combination
77 of patches, but that system doesn't use this code: it has utimes.
80 || (st.st_size == 0 && ftruncate (fd, st.st_size) < 0))
91 /* If there was a prior failure, use the saved errno value.
92 But if the only failure was in the close, don't change errno. */
102 rpl_utime (const char *file, const struct utimbuf *times)
105 return utime (file, times);
107 return utime_null (file);