inetd: if argv[0] is not specified, set it to program name

With inetd.conf files that skip argv[], inetd execs programs with argc==0.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/networking/inetd.c b/networking/inetd.c
index ac42c5272..fb00c6cd7 100644
--- a/networking/inetd.c
+++ b/networking/inetd.c
@@ -778,6 +778,12 @@ static servtab_t *parse_one_line(void)
         argc = 0;
         while ((arg = token[6+argc]) != NULL && argc < MAXARGV)
                 sep->se_argv[argc++] = xstrdup(arg);
+        /* Some inetd.conf files have no argv's, not even argv[0].
+         * Fix them up.
+         * (Technically, programs can be execed with argv[0] = NULL,
+         * but many programs do not like that at all) */
+        if (argc == 0)
+                sep->se_argv[0] = xstrdup(sep->se_program);
 
         /* catch mixups. "<service> stream udp ..." == wtf */
         if (sep->se_socktype == SOCK_STREAM) {