2 * Copyright (c) 1999-2005, 2007, 2009, 2010
3 * Todd C. Miller <Todd.Miller@courtesan.com>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 * Sponsored in part by the Defense Advanced Research Projects
18 * Agency (DARPA) and Air Force Research Laboratory, Air Force
19 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
24 #include <sys/types.h>
25 #include <sys/param.h>
28 # include <sys/file.h>
29 #endif /* HAVE_FLOCK */
33 #endif /* HAVE_STRING_H */
36 #endif /* HAVE_STRINGS_H */
41 #endif /* HAVE_UNISTD_H */
43 #if TIME_WITH_SYS_TIME
47 # include <emul/timespec.h>
53 # define LINE_MAX 2048
57 * Update the access and modify times on an fd or file.
65 struct timeval times[2];
68 times[0].tv_sec = times[1].tv_sec = tvp->tv_sec;
69 times[0].tv_usec = times[1].tv_usec = tvp->tv_usec;
72 #if defined(HAVE_FUTIME) || defined(HAVE_FUTIMES)
74 return(futimes(fd, tvp ? times : NULL));
78 return(utimes(path, tvp ? times : NULL));
105 return(lockf(fd, op, 0) == 0);
109 lock_file(fd, lockit)
120 op = LOCK_EX | LOCK_NB;
126 return(flock(fd, op) == 0);
130 lock_file(fd, lockit)
140 lock.l_pid = getpid();
141 lock.l_type = (lockit == SUDO_UNLOCK) ? F_UNLCK : F_WRLCK;
142 lock.l_whence = SEEK_SET;
143 func = (lockit == SUDO_LOCK) ? F_SETLKW : F_SETLK;
145 return(fcntl(fd, func, &lock) == 0);
153 * Read a line of input, remove comments and strip off leading
154 * and trailing spaces. Returns static storage that is reused.
162 static char buf[LINE_MAX];
164 if (fgets(buf, sizeof(buf), fp) != NULL) {
165 /* Remove comments */
166 if ((cp = strchr(buf, '#')) != NULL)
169 /* Trim leading and trailing whitespace/newline */
171 while (len > 0 && isspace((unsigned char)buf[len - 1]))
173 for (cp = buf; isblank(*cp); cp++)