1c20ff1a6d
Not all systems are able to support setting the times of an fd so touch() takes both an fd and a file name as arguments.
132 lines
2.8 KiB
C
132 lines
2.8 KiB
C
/*
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* Copyright (c) 1999, 2001 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F39502-99-1-0512.
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#ifdef HAVE_FLOCK
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# include <sys/file.h>
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#endif /* HAVE_FLOCK */
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#include <stdio.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif /* HAVE_UNISTD_H */
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#include <fcntl.h>
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#include <time.h>
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#include "sudo.h"
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#ifndef lint
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static const char rcsid[] = "$Sudo$";
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#endif /* lint */
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/*
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* Update the access and modify times on an fd or file.
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*/
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int
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touch(fd, path, when)
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int fd;
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char *path;
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time_t when;
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{
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struct timeval times[2];
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times[0].tv_sec = times[1].tv_sec = when;
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times[0].tv_usec = times[1].tv_usec = 0;
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#if defined(HAVE_FUTIME) || defined(HAVE_FUTIMES)
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if (fd != -1)
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return(futimes(fd, times));
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else
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#endif
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return(utimes(path, times));
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}
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/*
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* Lock/unlock a file.
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*/
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#ifdef HAVE_LOCKF
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int
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lock_file(fd, lockit)
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int fd;
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int lockit;
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{
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int op = 0;
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switch (lockit) {
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case SUDO_LOCK:
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op = F_LOCK;
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break;
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case SUDO_TLOCK:
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op = F_TLOCK;
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break;
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case SUDO_UNLOCK:
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op = F_ULOCK;
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break;
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}
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return(lockf(fd, op, 0) == 0);
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}
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#elif HAVE_FLOCK
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int
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lock_file(fd, lockit)
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int fd;
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int lockit;
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{
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int op = 0;
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switch (lockit) {
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case SUDO_LOCK:
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op = LOCK_EX;
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break;
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case SUDO_TLOCK:
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op = LOCK_EX | LOCK_NB;
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break;
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case SUDO_UNLOCK:
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op = LOCK_UN;
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break;
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}
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return(flock(fd, op) == 0);
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}
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#else
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int
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lock_file(fd, lockit)
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int fd;
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int lockit;
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{
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#ifdef F_SETLK
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int func;
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struct flock lock;
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lock.l_start = 0;
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lock.l_len = 0;
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lock.l_pid = getpid();
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lock.l_type = (lockit == SUDO_UNLOCK) ? F_UNLCK : F_WRLCK;
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lock.l_whence = SEEK_SET;
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func = (lockit == SUDO_TLOCK) ? F_SETLK : F_SETLKW;
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return(fcntl(fd, func, &lock) == 0);
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#else
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return(TRUE);
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#endif
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}
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#endif
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