daemon: check return value of chdir() in daemon_start_fork_pid()

libtool: compile:  gcc -DHAVE_CONFIG_H -I. -DAX25_SYSCONFDIR=\"/usr/local/etc/ax25/\" -DAX25_LOCALSTATEDIR=\"/usr/local/var/ax25/\" -O2 -Wall -D_FORTIFY_SOURCE=2 -flto -MT daemon.lo -MD -MP -MF .deps/daemon.Tpo -c daemon.c  -fPIC -DPIC -o .libs/daemon.o
daemon.c: In function ‘daemon_start_fork_pid’:
daemon.c:167:2: warning: ignoring return value of ‘chdir’, declared with attribute warn_unused_result [-Wunused-result]
  chdir("/");
  ^~~~~~~~~~

Found by FORTIFY_SOURCE.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/daemon.c b/daemon.c
index 88d1ed9..dcc5669 100644
--- a/daemon.c
+++ b/daemon.c
@@ -46,7 +46,8 @@ int daemon_start(int ignsigcld)
 out:
 	/* Move the current directory to root, to make sure we aren't on a	*/
 	/* mounted filesystem.							*/
-	chdir("/");
+	if (chdir("/") < 0)
+		return 0;
 
 	/* Clear any inherited file mode creation mask.	*/
 	umask(0);