make update-server-info more robust

diff --git a/shell.c b/shell.c
index 1429870a8f29d3d8b8e4d1d7ba3e228d15a73759..ace62e4b6503d821962242f9cf3bd9af22bc39b9 100644 (file)
--- a/shell.c
+++ b/shell.c
@@ -15,7 +15,7 @@ static int do_generic_cmd(const char *me, char *arg)
        setup_path();
        if (!arg || !(arg = sq_dequote(arg)))
                die("bad argument");
-       if (prefixcmp(me, "git-"))
+       if (!starts_with(me, "git-"))
                die("bad command");
 
        my_argv[0] = me + 4;
@@ -46,11 +46,7 @@ static int is_valid_cmd_name(const char *cmd)
 
 static char *make_cmd(const char *prog)
 {
-       char *prefix = xmalloc((strlen(prog) + strlen(COMMAND_DIR) + 2));
-       strcpy(prefix, COMMAND_DIR);
-       strcat(prefix, "/");
-       strcat(prefix, prog);
-       return prefix;
+       return xstrfmt("%s/%s", COMMAND_DIR, prog);
 }
 
 static void cd_to_homedir(void)
@@ -147,7 +143,6 @@ int main(int argc, char **argv)
        char *prog;
        const char **user_argv;
        struct commands *cmd;
-       int devnull_fd;
        int count;
 
        git_setup_gettext();
@@ -156,15 +151,10 @@ int main(int argc, char **argv)
 
        /*
         * Always open file descriptors 0/1/2 to avoid clobbering files
-        * in die().  It also avoids not messing up when the pipes are
-        * dup'ed onto stdin/stdout/stderr in the child processes we spawn.
+        * in die().  It also avoids messing up when the pipes are dup'ed
+        * onto stdin/stdout/stderr in the child processes we spawn.
         */
-       devnull_fd = open("/dev/null", O_RDWR);
-       while (devnull_fd >= 0 && devnull_fd <= 2)
-               devnull_fd = dup(devnull_fd);
-       if (devnull_fd == -1)
-               die_errno("opening /dev/null failed");
-       close (devnull_fd);
+       sanitize_stdfds();
 
        /*
         * Special hack to pretend to be a CVS server