daemon.c (244986) | daemon.c (255521) |
---|---|
1/*- 2 * Copyright (c) 1999 Berkeley Software Design, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. --- 15 unchanged lines hidden (view full) --- 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * From BSDI: daemon.c,v 1.2 1996/08/15 01:11:09 jch Exp 29 */ 30 31#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1999 Berkeley Software Design, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. --- 15 unchanged lines hidden (view full) --- 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * From BSDI: daemon.c,v 1.2 1996/08/15 01:11:09 jch Exp 29 */ 30 31#include <sys/cdefs.h> |
32__FBSDID("$FreeBSD: head/usr.sbin/daemon/daemon.c 244986 2013-01-03 00:49:11Z marius $"); | 32__FBSDID("$FreeBSD: head/usr.sbin/daemon/daemon.c 255521 2013-09-13 16:57:28Z jmg $"); |
33 34#include <sys/param.h> 35#include <sys/mman.h> 36#include <sys/wait.h> 37 38#include <err.h> 39#include <errno.h> 40#include <libutil.h> --- 7 unchanged lines hidden (view full) --- 48static void dummy_sighandler(int); 49static void restrict_process(const char *); 50static int wait_child(pid_t pid, sigset_t *mask); 51static void usage(void); 52 53int 54main(int argc, char *argv[]) 55{ | 33 34#include <sys/param.h> 35#include <sys/mman.h> 36#include <sys/wait.h> 37 38#include <err.h> 39#include <errno.h> 40#include <libutil.h> --- 7 unchanged lines hidden (view full) --- 48static void dummy_sighandler(int); 49static void restrict_process(const char *); 50static int wait_child(pid_t pid, sigset_t *mask); 51static void usage(void); 52 53int 54main(int argc, char *argv[]) 55{ |
56 struct pidfh *pfh = NULL; | 56 struct pidfh *ppfh, *pfh; |
57 sigset_t mask, oldmask; 58 int ch, nochdir, noclose, restart; | 57 sigset_t mask, oldmask; 58 int ch, nochdir, noclose, restart; |
59 const char *pidfile, *user; | 59 const char *pidfile, *ppidfile, *user; |
60 pid_t otherpid, pid; 61 62 nochdir = noclose = 1; 63 restart = 0; | 60 pid_t otherpid, pid; 61 62 nochdir = noclose = 1; 63 restart = 0; |
64 pidfile = user = NULL; 65 while ((ch = getopt(argc, argv, "cfp:ru:")) != -1) { | 64 ppfh = pfh = NULL; 65 ppidfile = pidfile = user = NULL; 66 while ((ch = getopt(argc, argv, "cfp:P:ru:")) != -1) { |
66 switch (ch) { 67 case 'c': 68 nochdir = 0; 69 break; 70 case 'f': 71 noclose = 0; 72 break; 73 case 'p': 74 pidfile = optarg; 75 break; | 67 switch (ch) { 68 case 'c': 69 nochdir = 0; 70 break; 71 case 'f': 72 noclose = 0; 73 break; 74 case 'p': 75 pidfile = optarg; 76 break; |
77 case 'P': 78 ppidfile = optarg; 79 break; |
|
76 case 'r': 77 restart = 1; 78 break; 79 case 'u': 80 user = optarg; 81 break; 82 default: 83 usage(); 84 } 85 } 86 argc -= optind; 87 argv += optind; 88 89 if (argc == 0) 90 usage(); 91 | 80 case 'r': 81 restart = 1; 82 break; 83 case 'u': 84 user = optarg; 85 break; 86 default: 87 usage(); 88 } 89 } 90 argc -= optind; 91 argv += optind; 92 93 if (argc == 0) 94 usage(); 95 |
92 pfh = NULL; | 96 ppfh = pfh = NULL; |
93 /* 94 * Try to open the pidfile before calling daemon(3), 95 * to be able to report the error intelligently 96 */ 97 if (pidfile != NULL) { 98 pfh = pidfile_open(pidfile, 0600, &otherpid); 99 if (pfh == NULL) { 100 if (errno == EEXIST) { 101 errx(3, "process already running, pid: %d", 102 otherpid); 103 } 104 err(2, "pidfile ``%s''", pidfile); 105 } 106 } | 97 /* 98 * Try to open the pidfile before calling daemon(3), 99 * to be able to report the error intelligently 100 */ 101 if (pidfile != NULL) { 102 pfh = pidfile_open(pidfile, 0600, &otherpid); 103 if (pfh == NULL) { 104 if (errno == EEXIST) { 105 errx(3, "process already running, pid: %d", 106 otherpid); 107 } 108 err(2, "pidfile ``%s''", pidfile); 109 } 110 } |
111 112 /* do same for actual daemon process */ 113 if (ppidfile != NULL) { 114 ppfh = pidfile_open(ppidfile, 0600, &otherpid); 115 if (ppfh == NULL) { 116 if (errno == EEXIST) { 117 errx(3, "process already running, pid: %d", 118 otherpid); 119 } 120 err(2, "ppidfile ``%s''", ppidfile); 121 } 122 } |
|
107 108 if (daemon(nochdir, noclose) == -1) 109 err(1, NULL); 110 111 /* 112 * If the pidfile or restart option is specified the daemon 113 * executes the command in a forked process and wait on child 114 * exit to remove the pidfile or restart the command. Normally --- 56 unchanged lines hidden (view full) --- 171 execvp(argv[0], argv); 172 173 /* 174 * execvp() failed -- report the error. The child is 175 * now running, so the exit status doesn't matter. 176 */ 177 err(1, "%s", argv[0]); 178 } | 123 124 if (daemon(nochdir, noclose) == -1) 125 err(1, NULL); 126 127 /* 128 * If the pidfile or restart option is specified the daemon 129 * executes the command in a forked process and wait on child 130 * exit to remove the pidfile or restart the command. Normally --- 56 unchanged lines hidden (view full) --- 187 execvp(argv[0], argv); 188 189 /* 190 * execvp() failed -- report the error. The child is 191 * now running, so the exit status doesn't matter. 192 */ 193 err(1, "%s", argv[0]); 194 } |
195 /* write out parent pidfile if needed */ 196 if (ppidfile != NULL) 197 pidfile_write(ppfh); 198 |
|
179 setproctitle("%s[%d]", argv[0], pid); 180 if (wait_child(pid, &mask) == 0 && restart) { 181 sleep(1); 182 goto restart; 183 } 184 pidfile_remove(pfh); | 199 setproctitle("%s[%d]", argv[0], pid); 200 if (wait_child(pid, &mask) == 0 && restart) { 201 sleep(1); 202 goto restart; 203 } 204 pidfile_remove(pfh); |
205 pidfile_remove(ppfh); |
|
185 exit(0); /* Exit status does not matter. */ 186} 187 188static void 189dummy_sighandler(int sig __unused) 190{ 191 /* Nothing to do. */ 192} --- 42 unchanged lines hidden (view full) --- 235 } 236 } 237} 238 239static void 240usage(void) 241{ 242 (void)fprintf(stderr, | 206 exit(0); /* Exit status does not matter. */ 207} 208 209static void 210dummy_sighandler(int sig __unused) 211{ 212 /* Nothing to do. */ 213} --- 42 unchanged lines hidden (view full) --- 256 } 257 } 258} 259 260static void 261usage(void) 262{ 263 (void)fprintf(stderr, |
243 "usage: daemon [-cfr] [-p pidfile] [-u user] command " 244 "arguments ...\n"); | 264 "usage: daemon [-cfr] [-p child_pidfile] [-P supervisor_pidfile] " 265 "[-u user]\n command arguments ...\n"); |
245 exit(1); 246} | 266 exit(1); 267} |