[CRIU] [PATCH] fsnotify: Print error if link can't be read

[Cyrill Gorcunov]

On some machine, where fsnotify failed to restore
due to different reason, readlink fails as well, so
print

| (01.115708)    244: Error (fsnotify.c:220): fsnotify: Can't read link for /proc/self/fd/7: Permission denied

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 fsnotify.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fsnotify.c b/fsnotify.c
index e0f59b9..784c416 100644
--- a/fsnotify.c
+++ b/fsnotify.c
@@ -216,8 +216,11 @@ static char *get_mark_path(const char *who, struct file_remap *remap,
 
 	if (log_get_loglevel() >= LOG_DEBUG) {
 		memzero(link, sizeof(link));
-		readlink(path, link, sizeof(link));
-		link[sizeof(link) - 1] = '\0';
+		if (readlink(path, link, sizeof(link)) < 0) {
+			pr_perror("Can't read link for %s", path);
+			link[0] = '\0';
+		} else
+			link[sizeof(link) - 1] = '\0';
 	} else
 		link[0] = '\0';
 
-- 
1.8.3.1