[PATCH 1/4] uuidd: ensure pid file is wrote when it is requested

[Sami Kerola <kerolasa@iki.fi>]

Earlier for example this 'uuidd --pid /dev/full' worked, now error is
printed about truncating not being possible for character device and
assuming someone would write pid to full disk it should not be go by
unnoticed.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
---
 misc-utils/uuidd.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/misc-utils/uuidd.c b/misc-utils/uuidd.c
index c626105..5730919 100644
--- a/misc-utils/uuidd.c
+++ b/misc-utils/uuidd.c
@@ -338,10 +338,12 @@ static void server_loop(const char *socket_path, const char *pidfile_path,
 
 		if (pidfile_path) {
 			sprintf(reply_buf, "%8d\n", getpid());
-			ignore_result( ftruncate(fd_pidfile, 0) );
+			if (ftruncate(fd_pidfile, 0))
+				err(EXIT_FAILURE, _("could not truncate file: %s"), pidfile_path);
 			write_all(fd_pidfile, reply_buf, strlen(reply_buf));
 			if (fd_pidfile > 1)
-				close(fd_pidfile); /* Unlock the pid file */
+				if (close_fd(fd_pidfile) != 0) /* Unlock the pid file */
+					err(EXIT_FAILURE, _("write failed: %s"), pidfile_path);
 		}
 
 	}
-- 
1.9.3