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Diffstat (limited to 'util.c')
-rw-r--r--util.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/util.c b/util.c
index b366167..5b1e08a 100644
--- a/util.c
+++ b/util.c
@@ -311,10 +311,14 @@ void procfs_scan_listen(struct ctx *c, uint8_t proto, int ip_version, int ns,
path = "/proc/net/udp6";
}
- if (*fd != -1)
- lseek(*fd, 0, SEEK_SET);
- else if ((*fd = open(path, O_RDONLY | O_CLOEXEC)) < 0)
+ if (*fd != -1) {
+ if (lseek(*fd, 0, SEEK_SET)) {
+ warn("lseek() failed on %s: %s", path, strerror(errno));
+ return;
+ }
+ } else if ((*fd = open(path, O_RDONLY | O_CLOEXEC)) < 0) {
return;
+ }
lineread_init(&lr, *fd);
lineread_get(&lr, &line); /* throw away header */