diff options
Diffstat (limited to 'debianutils')
| -rw-r--r-- | debianutils/start_stop_daemon.c | 72 |
1 files changed, 45 insertions, 27 deletions
diff --git a/debianutils/start_stop_daemon.c b/debianutils/start_stop_daemon.c index 6bc259f..e15944c 100644 --- a/debianutils/start_stop_daemon.c +++ b/debianutils/start_stop_daemon.c @@ -116,18 +116,18 @@ check(int pid) static void -do_pidfile(const char *name) +do_pidfile(void) { FILE *f; pid_t pid; - f = fopen(name, "r"); + f = fopen(pidfile, "r"); if (f) { if (fscanf(f, "%d", &pid) == 1) check(pid); fclose(f); } else if (errno != ENOENT) - bb_perror_msg_and_die("open pidfile %s", name); + bb_perror_msg_and_die("open pidfile %s", pidfile); } @@ -138,6 +138,11 @@ do_procinit(void) struct dirent *entry; int foundany, pid; + if (pidfile) { + do_pidfile(); + return; + } + procdir = opendir("/proc"); if (!procdir) bb_perror_msg_and_die ("opendir /proc"); @@ -162,15 +167,14 @@ do_stop(void) struct pid_list *p; int killed = 0; - if (pidfile) - do_pidfile(pidfile); - else - do_procinit(); + do_procinit(); if (cmdname) strcpy(what, cmdname); else if (execname) strcpy(what, execname); + else if (pidfile) + sprintf(what, "process in pidfile `%.200s'", pidfile); else if (userspec) sprintf(what, "process(es) owned by `%s'", userspec); else @@ -186,7 +190,7 @@ do_stop(void) p->pid = -p->pid; killed++; } else { - bb_perror_msg("warning: failed to kill %d:", p->pid); + bb_perror_msg("warning: failed to kill %d", p->pid); } } if (!quiet && killed) { @@ -200,23 +204,25 @@ do_stop(void) static const struct option ssd_long_options[] = { - { "stop", 0, NULL, 'K' }, - { "start", 0, NULL, 'S' }, - { "background", 0, NULL, 'b' }, - { "quiet", 0, NULL, 'q' }, - { "startas", 1, NULL, 'a' }, - { "name", 1, NULL, 'n' }, - { "signal", 1, NULL, 's' }, - { "user", 1, NULL, 'u' }, - { "exec", 1, NULL, 'x' }, - { "pidfile", 1, NULL, 'p' }, + { "stop", 0, NULL, 'K' }, + { "start", 0, NULL, 'S' }, + { "background", 0, NULL, 'b' }, + { "quiet", 0, NULL, 'q' }, + { "make-pidfile", 0, NULL, 'm' }, + { "startas", 1, NULL, 'a' }, + { "name", 1, NULL, 'n' }, + { "signal", 1, NULL, 's' }, + { "user", 1, NULL, 'u' }, + { "exec", 1, NULL, 'x' }, + { "pidfile", 1, NULL, 'p' }, { 0, 0, 0, 0 } }; -#define SSD_CTX_STOP 1 -#define SSD_CTX_START 2 +#define SSD_CTX_STOP 1 +#define SSD_CTX_START 2 #define SSD_OPT_BACKGROUND 4 -#define SSD_OPT_QUIET 8 +#define SSD_OPT_QUIET 8 +#define SSD_OPT_MAKEPID 16 int start_stop_daemon_main(int argc, char **argv) @@ -228,7 +234,7 @@ start_stop_daemon_main(int argc, char **argv) bb_applet_long_options = ssd_long_options; bb_opt_complementaly = "K~S:S~K"; - opt = bb_getopt_ulflags(argc, argv, "KSbqa:n:s:u:x:p:", + opt = bb_getopt_ulflags(argc, argv, "KSbqma:n:s:u:x:p:", &startas, &cmdname, &signame, &userspec, &execname, &pidfile); /* Check one and only one context option was given */ @@ -240,8 +246,8 @@ start_stop_daemon_main(int argc, char **argv) signal_nr = bb_xgetlarg(signame, 10, 0, NSIG); } - if (!execname && !userspec) - bb_error_msg_and_die ("need at least one of -x or -u"); + if (!execname && !pidfile && !userspec && !cmdname) + bb_error_msg_and_die ("need at least one of -x, -p, -u, or -n"); if (!startas) startas = execname; @@ -249,19 +255,22 @@ start_stop_daemon_main(int argc, char **argv) if ((opt & SSD_CTX_START) && !startas) bb_error_msg_and_die ("-S needs -x or -a"); + if ((opt & SSD_OPT_MAKEPID) && pidfile == NULL) + bb_error_msg_and_die ("-m needs -p"); + argc -= optind; argv += optind; if (userspec && sscanf(userspec, "%d", &user_id) != 1) user_id = my_getpwnam(userspec); - do_procinit(); - if (opt & SSD_CTX_STOP) { do_stop(); return EXIT_SUCCESS; } + do_procinit(); + if (found) { if (!quiet) printf("%s already running.\n%d\n", execname ,found->pid); @@ -271,8 +280,17 @@ start_stop_daemon_main(int argc, char **argv) if (opt & SSD_OPT_BACKGROUND) { if (daemon(0, 0) == -1) bb_perror_msg_and_die ("unable to fork"); + setsid(); + } + if (opt & SSD_OPT_MAKEPID) { + /* user wants _us_ to make the pidfile */ + FILE *pidf = fopen(pidfile, "w"); + pid_t pidt = getpid(); + if (pidf == NULL) + bb_perror_msg_and_die("Unable to write pidfile '%s'", pidfile); + fprintf(pidf, "%d\n", pidt); + fclose(pidf); } - setsid(); execv(startas, argv); bb_perror_msg_and_die ("unable to start %s", startas); } |