diff options
Diffstat (limited to 'debianutils')
| -rw-r--r-- | debianutils/start_stop_daemon.c | 82 |
1 files changed, 53 insertions, 29 deletions
diff --git a/debianutils/start_stop_daemon.c b/debianutils/start_stop_daemon.c index dfa33e1..6bc259f 100644 --- a/debianutils/start_stop_daemon.c +++ b/debianutils/start_stop_daemon.c @@ -23,21 +23,23 @@ static int signal_nr = 15; static int user_id = -1; +static int quiet = 0; static char *userspec = NULL; static char *cmdname = NULL; static char *execname = NULL; +static char *pidfile = NULL; -typedef struct pid_list { +struct pid_list { struct pid_list *next; - int pid; -} pid_list; + pid_t pid; +}; -static pid_list *found = NULL; +static struct pid_list *found = NULL; static inline void -push(int pid) +push(pid_t pid) { - pid_list *p; + struct pid_list *p; p = xmalloc(sizeof(*p)); p->next = found; @@ -46,21 +48,19 @@ push(int pid) } static int -pid_is_exec(int pid, const char *exec) +pid_is_exec(pid_t pid, const char *name) { - char buf[PATH_MAX]; - FILE *fp; - - sprintf(buf, "/proc/%d/cmdline", pid); - fp = fopen(buf, "r"); - if (fp && fgets (buf, sizeof (buf), fp) ) { - fclose(fp); - if (strncmp (buf, exec, strlen(exec)) == 0) - return 1; - } - return 0; -} + char buf[32]; + struct stat sb, exec_stat; + if (name && stat(name, &exec_stat)) + bb_perror_msg_and_die("stat %s", name); + + sprintf(buf, "/proc/%d/exe", pid); + if (stat(buf, &sb) != 0) + return 0; + return (sb.st_dev == exec_stat.st_dev && sb.st_ino == exec_stat.st_ino); +} static int pid_is_user(int pid, int uid) @@ -74,9 +74,8 @@ pid_is_user(int pid, int uid) return (sb.st_uid == uid); } - static int -pid_is_cmd(int pid, const char *name) +pid_is_cmd(pid_t pid, const char *name) { char buf[32]; FILE *f; @@ -116,9 +115,24 @@ check(int pid) } +static void +do_pidfile(const char *name) +{ + FILE *f; + pid_t pid; + + f = fopen(name, "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); + +} static void -do_procfs(void) +do_procinit(void) { DIR *procdir; struct dirent *entry; @@ -145,9 +159,14 @@ static void do_stop(void) { char what[1024]; - pid_list *p; + struct pid_list *p; int killed = 0; + if (pidfile) + do_pidfile(pidfile); + else + do_procinit(); + if (cmdname) strcpy(what, cmdname); else if (execname) @@ -158,7 +177,8 @@ do_stop(void) bb_error_msg_and_die ("internal error, please report"); if (!found) { - printf("no %s found; none killed.\n", what); + if (!quiet) + printf("no %s found; none killed.\n", what); return; } for (p = found; p; p = p->next) { @@ -169,7 +189,7 @@ do_stop(void) bb_perror_msg("warning: failed to kill %d:", p->pid); } } - if (killed) { + if (!quiet && killed) { printf("stopped %s (pid", what); for (p = found; p; p = p->next) if(p->pid < 0) @@ -183,17 +203,20 @@ 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' }, { 0, 0, 0, 0 } }; #define SSD_CTX_STOP 1 #define SSD_CTX_START 2 #define SSD_OPT_BACKGROUND 4 +#define SSD_OPT_QUIET 8 int start_stop_daemon_main(int argc, char **argv) @@ -205,8 +228,8 @@ 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, "KSba:n:s:u:x:", - &startas, &cmdname, &signame, &userspec, &execname); + opt = bb_getopt_ulflags(argc, argv, "KSbqa:n:s:u:x:p:", + &startas, &cmdname, &signame, &userspec, &execname, &pidfile); /* Check one and only one context option was given */ if ((opt & 0x80000000UL) || (opt & (SSD_CTX_STOP | SSD_CTX_START)) == 0) { @@ -232,7 +255,7 @@ start_stop_daemon_main(int argc, char **argv) if (userspec && sscanf(userspec, "%d", &user_id) != 1) user_id = my_getpwnam(userspec); - do_procfs(); + do_procinit(); if (opt & SSD_CTX_STOP) { do_stop(); @@ -240,7 +263,8 @@ start_stop_daemon_main(int argc, char **argv) } if (found) { - printf("%s already running.\n%d\n", execname ,found->pid); + if (!quiet) + printf("%s already running.\n%d\n", execname ,found->pid); return EXIT_SUCCESS; } *--argv = startas; |