Mercurial > hg > octave-nkf > gnulib-hg
changeset 5485:863556283cee
(__attribute__, ATTRIBUTE_UNUSED): New macros.
(futimens): New function, which uses futimes if available.
(futimens, utimens): Support timespec==NULL, with same semantics
as utime and utimens.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 23 Nov 2004 20:59:33 +0000 |
parents | 62e4ac23af02 |
children | d6d3ae5214c8 |
files | lib/utimens.c |
diffstat | 1 files changed, 53 insertions(+), 12 deletions(-) [+] |
line wrap: on
line diff
--- a/lib/utimens.c +++ b/lib/utimens.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. +/* Copyright (C) 2003, 2004 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the @@ -38,26 +38,67 @@ }; #endif -/* Set the access and modification time stamps of FILE to be - TIMESPEC[0] and TIMESPEC[1], respectively. */ +#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__ +# define __attribute__(x) +#endif + +#ifndef ATTRIBUTE_UNUSED +# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +#endif + +/* Set the access and modification time stamps of FD (a.k.a. FILE) to be + TIMESPEC[0] and TIMESPEC[1], respectively. + FD must be either negative -- in which case it is ignored -- + or a file descriptor that is open on FILE. + If TIMESPEC is null, set the time stamps to the current time. */ int -utimens (char const *file, struct timespec const timespec[2]) +futimens (int fd ATTRIBUTE_UNUSED, + char const *file, struct timespec const timespec[2]) { /* There's currently no interface to set file timestamps with nanosecond resolution, so do the best we can, discarding any fractional part of the timestamp. */ #if HAVE_WORKING_UTIMES struct timeval timeval[2]; - timeval[0].tv_sec = timespec[0].tv_sec; - timeval[0].tv_usec = timespec[0].tv_nsec / 1000; - timeval[1].tv_sec = timespec[1].tv_sec; - timeval[1].tv_usec = timespec[1].tv_nsec / 1000; - return utimes (file, timeval); + struct timeval const *t; + if (timespec) + { + timeval[0].tv_sec = timespec[0].tv_sec; + timeval[0].tv_usec = timespec[0].tv_nsec / 1000; + timeval[1].tv_sec = timespec[1].tv_sec; + timeval[1].tv_usec = timespec[1].tv_nsec / 1000; + t = timeval; + } + else + t = NULL; +# if HAVE_FUTIMES + if (0 <= fd) + return futimes (fd, t); +# endif + return utimes (file, t); + #else + struct utimbuf utimbuf; - utimbuf.actime = timespec[0].tv_sec; - utimbuf.modtime = timespec[1].tv_sec; - return utime (file, &utimbuf); + struct utimbuf const *t; + if (timespec) + { + utimbuf.actime = timespec[0].tv_sec; + utimbuf.modtime = timespec[1].tv_sec; + t = &utimbuf; + } + else + t = NULL; + return utime (file, t); + #endif } + +/* Set the access and modification time stamps of FILE to be + TIMESPEC[0] and TIMESPEC[1], respectively. */ +int +utimens (char const *file, struct timespec const timespec[2]) +{ + return futimens (-1, file, timespec); +}