Patch from Thaddeus Ternes, adding chuid to start-stop-daemon.

2 files changed, 11 insertions, 3 deletions

diff --git a/debianutils/start_stop_daemon.c b/debianutils/start_stop_daemon.c
index 3700506bf..733fb4112 100644
--- a/debianutils/start_stop_daemon.c
+++ b/debianutils/start_stop_daemon.c
@@ -24,6 +24,7 @@ static int signal_nr = 15;
 static int user_id = -1;
 static int quiet;
 static char *userspec = NULL;
+static char *chuid = NULL;
 static char *cmdname = NULL;
 static char *execname = NULL;
 static char *pidfile = NULL;
@@ -211,6 +212,7 @@ static const struct option ssd_long_options[] = {
         { "name",                       1,              NULL,           'n' },
         { "signal",                     1,              NULL,           's' },
         { "user",                       1,              NULL,           'u' },
+        { "chuid",                      1,              NULL,           'c' },
         { "exec",                       1,              NULL,           'x' },
         { "pidfile",            1,              NULL,           'p' },
 #if ENABLE_FEATURE_START_STOP_DAEMON_FANCY
@@ -249,9 +251,9 @@ int start_stop_daemon_main(int argc, char **argv)
         opt = bb_getopt_ulflags(argc, argv, "KSbqm"
 //              USE_FEATURE_START_STOP_DAEMON_FANCY("ovR:")
                 USE_FEATURE_START_STOP_DAEMON_FANCY("ov")
-                "a:n:s:u:x:p:"
+                "a:n:s:u:c:x:p:"
 //              USE_FEATURE_START_STOP_DAEMON_FANCY(,&retry_arg)
-                ,&startas, &cmdname, &signame, &userspec, &execname, &pidfile);
+                ,&startas, &cmdname, &signame, &userspec, &chuid, &execname, &pidfile);
 
         quiet = (opt & SSD_OPT_QUIET)
                         USE_FEATURE_START_STOP_DAEMON_FANCY(&& !(opt & SSD_OPT_VERBOSE));
@@ -301,6 +303,11 @@ int start_stop_daemon_main(int argc, char **argv)
                 fprintf(pidf, "%d\n", pidt);
                 fclose(pidf);
         }
+        if(chuid) {
+                if(sscanf(chuid, "%d", &user_id) != 1)
+                        user_id = bb_xgetpwnam(chuid);
+                setuid(user_id);
+        }
         execv(startas, argv);
         bb_perror_msg_and_die ("unable to start %s", startas);
 }
diff --git a/include/usage.h b/include/usage.h
index 7c63e2f85..e8d121c1e 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -2712,7 +2712,8 @@ USE_FEATURE_START_STOP_DAEMON_FANCY( \
         "\n\t-o|--oknodo\t\t\texit status 0 if nothing done" \
         "\n\t-v|--verbose\t\t\tbe verbose" \
 ) \
-        "\n\t-s|--signal <signal>\t\tsignal to send (default TERM)"
+        "\n\t-s|--signal <signal>\t\tsignal to send (default TERM)" \
+        "\n\t-U|--chuid <username>|<uid>\tstart process with this name"
 
 #ifdef CONFIG_FEATURE_STAT_FORMAT
 #  define USAGE_STAT_FORMAT(a) a