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authorDave Reisner <dreisner@archlinux.org>2014-02-21 10:31:26 -0500
committerDave Reisner <dreisner@archlinux.org>2014-02-21 12:49:05 -0500
commit28def94cc8fd4394b20e2155d7130166662343c4 (patch)
treec734d99cbeace21ad0d62d470b5a603026fec105 /src/journal/journald-server.c
parentd60473c7ba32f2325a13f0357b23fd8e25609650 (diff)
journald: ignore failure to watch hostname_fd on older kernels
Prior to 3.2, /proc/sys/kernel/hostname isn't a pollable file and sd_event_add_io will return EPERM. Ignore this failure, since it isn't critical to journald operation. Reported and tested by user sraue on IRC.
Diffstat (limited to 'src/journal/journald-server.c')
-rw-r--r--src/journal/journald-server.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index 5872e91fba..96ef66db5f 100644
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -1430,6 +1430,16 @@ static int server_open_hostname(Server *s) {
r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s);
if (r < 0) {
+ /* kernels prior to 3.2 don't support polling this file. Ignore
+ * the failure. */
+ if (r == -EPERM) {
+ log_warning("Failed to register hostname fd in event loop: %s. Ignoring.",
+ strerror(-r));
+ close_nointr_nofail(s->hostname_fd);
+ s->hostname_fd = -1;
+ return 0;
+ }
+
log_error("Failed to register hostname fd in event loop: %s", strerror(-r));
return r;
}