Mercurial > hg > octave-kai > gnulib-hg
annotate lib/utime.c @ 4474:f1650b772bb6
Correct SunOS and Solaris version number notation to match Sun's usage.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Tue, 22 Jul 2003 22:56:34 +0000 |
| parents | 7f998811f2f0 |
| children | 9583f9cee522 |
| rev | line source |
|---|---|
|
4474
f1650b772bb6
Correct SunOS and Solaris version number notation to match Sun's usage.
Paul Eggert <eggert@cs.ucla.edu>
parents:
4105
diff
changeset
|
1 /* Copyright (C) 1998, 2001, 2002, 2003 Free Software Foundation, Inc. |
| 1442 | 2 |
| 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 | |
| 6 later version. | |
| 7 | |
| 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. | |
| 12 | |
| 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. */ | |
| 16 | |
| 17 /* derived from a function in touch.c */ | |
| 18 | |
| 19 #ifdef HAVE_CONFIG_H | |
| 20 # include <config.h> | |
| 21 #endif | |
| 22 #undef utime | |
| 23 | |
| 24 #include <sys/types.h> | |
| 25 | |
| 26 #ifdef HAVE_UTIME_H | |
| 27 # include <utime.h> | |
| 28 #endif | |
| 29 | |
| 3406 | 30 #include "full-write.h" |
| 1442 | 31 #include "safe-read.h" |
| 32 | |
| 33 /* Some systems (even some that do have <utime.h>) don't declare this | |
| 34 structure anywhere. */ | |
| 35 #ifndef HAVE_STRUCT_UTIMBUF | |
| 36 struct utimbuf | |
| 37 { | |
| 38 long actime; | |
| 39 long modtime; | |
| 40 }; | |
| 41 #endif | |
| 42 | |
| 43 /* Emulate utime (file, NULL) for systems (like 4.3BSD) that do not | |
| 44 interpret it to set the access and modification times of FILE to | |
| 45 the current time. Return 0 if successful, -1 if not. */ | |
| 46 | |
| 47 static int | |
| 48 utime_null (const char *file) | |
| 49 { | |
| 50 #if HAVE_UTIMES_NULL | |
| 51 return utimes (file, 0); | |
| 52 #else | |
| 53 int fd; | |
| 54 char c; | |
| 55 int status = 0; | |
| 56 struct stat sb; | |
| 57 | |
|
1820
6908e7ed16b7
(utime_null): Don't pass 0666 to open; it's not needed and isn't
Jim Meyering <jim@meyering.net>
parents:
1442
diff
changeset
|
58 fd = open (file, O_RDWR); |
| 1442 | 59 if (fd < 0 |
| 60 || fstat (fd, &sb) < 0 | |
|
4088
815386455680
Update for changed signature of safe_read.
Bruno Haible <bruno@clisp.org>
parents:
3407
diff
changeset
|
61 || safe_read (fd, &c, sizeof c) == SAFE_READ_ERROR |
| 1442 | 62 || lseek (fd, (off_t) 0, SEEK_SET) < 0 |
| 3406 | 63 || full_write (fd, &c, sizeof c) != sizeof c |
|
4474
f1650b772bb6
Correct SunOS and Solaris version number notation to match Sun's usage.
Paul Eggert <eggert@cs.ucla.edu>
parents:
4105
diff
changeset
|
64 /* Maybe do this -- it's necessary on SunOS 4.1.3 with some combination |
| 1442 | 65 of patches, but that system doesn't use this code: it has utimes. |
| 66 || fsync (fd) < 0 | |
| 67 */ | |
|
4105
7f998811f2f0
Don't call ftruncate() when it's not needed.
Bruno Haible <bruno@clisp.org>
parents:
4088
diff
changeset
|
68 || (st.st_size == 0 && ftruncate (fd, st.st_size) < 0) |
| 1442 | 69 || close (fd) < 0) |
| 70 status = -1; | |
| 71 return status; | |
| 72 #endif | |
| 73 } | |
| 74 | |
| 75 int | |
| 76 rpl_utime (const char *file, const struct utimbuf *times) | |
| 77 { | |
| 78 if (times) | |
| 79 return utime (file, times); | |
| 80 | |
| 81 return utime_null (file); | |
| 82 } |