diff options
| -rw-r--r-- | debianutils/start_stop_daemon.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/debianutils/start_stop_daemon.c b/debianutils/start_stop_daemon.c index 601fd72fa..2f8e04a78 100644 --- a/debianutils/start_stop_daemon.c +++ b/debianutils/start_stop_daemon.c @@ -32,6 +32,7 @@ struct globals { int user_id; smallint quiet; smallint signal_nr; + struct stat execstat; }; #define G (*(struct globals*)&bb_common_bufsiz1) #define found (G.found ) @@ -42,6 +43,7 @@ struct globals { #define user_id (G.user_id ) #define quiet (G.quiet ) #define signal_nr (G.signal_nr ) +#define execstat (G.execstat ) #define INIT_G() \ do { \ user_id = -1; \ @@ -49,22 +51,18 @@ struct globals { } while (0) -static int pid_is_exec(pid_t pid, const char *name) +static int pid_is_exec(pid_t pid) { + struct stat st; char buf[sizeof("/proc//exe") + sizeof(int)*3]; - char *execbuf; - int n; sprintf(buf, "/proc/%u/exe", pid); - n = strlen(name) + 1; - execbuf = xzalloc(n + 1); - readlink(buf, execbuf, n); - /* if readlink fails because link target is longer than strlen(name), - * execbuf still contains "", and strcmp will return !0. */ - n = strcmp(execbuf, name); - if (ENABLE_FEATURE_CLEAN_UP) - free(execbuf); - return !n; /* nonzero (true) if execbuf == name */ + if (stat(buf, &st) < 0) + return 0; + if (st.st_dev == execstat.st_dev + && st.st_ino == execstat.st_ino) + return 1; + return 0; } static int pid_is_user(int pid, int uid) @@ -104,7 +102,7 @@ static void check(int pid) { struct pid_list *p; - if (execname && !pid_is_exec(pid, execname)) { + if (execname && !pid_is_exec(pid)) { return; } if (userspec && !pid_is_user(pid, user_id)) { @@ -300,6 +298,8 @@ int start_stop_daemon_main(int argc ATTRIBUTE_UNUSED, char **argv) if (errno) user_id = xuname2uid(userspec); } + if (execname) + xstat(execname, &execstat); if (opt & CTX_STOP) { int i = do_stop(); |