| uucplock.c (6c78a7b0e81a20dc4987882fcb7f59975eb21a72) | uucplock.c (3c42a9c08a7342ecb85a7517389940bd28079f27) |
|---|---|
| 1/* 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * | 1/* 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * |
| 33 * $Id: uucplock.c,v 1.9 1998/05/28 23:17:09 brian Exp $ | 33 * $Id: uucplock.c,v 1.10 1998/06/10 00:16:28 brian Exp $ |
| 34 * 35 */ 36 37#ifndef lint 38static const char sccsid[] = "@(#)uucplock.c 8.1 (Berkeley) 6/6/93"; 39#endif /* not lint */ 40 41#include <sys/types.h> --- 23 unchanged lines hidden (view full) --- 65/* 66 * uucp style locking routines 67 */ 68 69int 70uu_lock(const char *ttyname) 71{ 72 int fd, tmpfd, i; | 34 * 35 */ 36 37#ifndef lint 38static const char sccsid[] = "@(#)uucplock.c 8.1 (Berkeley) 6/6/93"; 39#endif /* not lint */ 40 41#include <sys/types.h> --- 23 unchanged lines hidden (view full) --- 65/* 66 * uucp style locking routines 67 */ 68 69int 70uu_lock(const char *ttyname) 71{ 72 int fd, tmpfd, i; |
| 73 pid_t pid; | 73 pid_t pid, pid_old; |
| 74 char lckname[sizeof(_PATH_UUCPLOCK) + MAXNAMLEN], 75 lcktmpname[sizeof(_PATH_UUCPLOCK) + MAXNAMLEN]; 76 int err, uuerr; 77 78 pid = getpid(); 79 (void)snprintf(lcktmpname, sizeof(lcktmpname), _PATH_UUCPLOCK LOCKTMP, 80 pid); 81 (void)snprintf(lckname, sizeof(lckname), _PATH_UUCPLOCK LOCKFMT, --- 8 unchanged lines hidden (view full) --- 90 /* 91 * file is already locked 92 * check to see if the process holding the lock 93 * still exists 94 */ 95 if ((fd = open(lckname, O_RDONLY)) < 0) 96 GORET(1, UU_LOCK_OPEN_ERR); 97 | 74 char lckname[sizeof(_PATH_UUCPLOCK) + MAXNAMLEN], 75 lcktmpname[sizeof(_PATH_UUCPLOCK) + MAXNAMLEN]; 76 int err, uuerr; 77 78 pid = getpid(); 79 (void)snprintf(lcktmpname, sizeof(lcktmpname), _PATH_UUCPLOCK LOCKTMP, 80 pid); 81 (void)snprintf(lckname, sizeof(lckname), _PATH_UUCPLOCK LOCKFMT, --- 8 unchanged lines hidden (view full) --- 90 /* 91 * file is already locked 92 * check to see if the process holding the lock 93 * still exists 94 */ 95 if ((fd = open(lckname, O_RDONLY)) < 0) 96 GORET(1, UU_LOCK_OPEN_ERR); 97 |
| 98 if ((pid = get_pid (fd, &err)) == -1) | 98 if ((pid_old = get_pid (fd, &err)) == -1) |
| 99 GORET(2, UU_LOCK_READ_ERR); 100 101 close(fd); 102 | 99 GORET(2, UU_LOCK_READ_ERR); 100 101 close(fd); 102 |
| 103 if (kill(pid, 0) == 0 || errno != ESRCH) | 103 if (kill(pid_old, 0) == 0 || errno != ESRCH) |
| 104 GORET(1, UU_LOCK_INUSE); 105 /* 106 * The process that locked the file isn't running, so 107 * we'll lock it ourselves 108 */ 109 (void)unlink(lckname); 110 } else { 111 if (!put_pid (tmpfd, pid)) --- 118 unchanged lines hidden --- | 104 GORET(1, UU_LOCK_INUSE); 105 /* 106 * The process that locked the file isn't running, so 107 * we'll lock it ourselves 108 */ 109 (void)unlink(lckname); 110 } else { 111 if (!put_pid (tmpfd, pid)) --- 118 unchanged lines hidden --- |