check return value from snprintf to avoid FUSE errors. Potentially fixes #24.

Signed-off-by: Michael McCracken <mike.mccracken@canonical.com>

diff --git a/lxcfs.c b/lxcfs.c
index 1faee5f31894e678174dc302a663303e8b81fd50..8e9f639419efdf87d9ffb5cfb1ad69a2b810deab 100644 (file)
--- a/lxcfs.c
+++ b/lxcfs.c
@@ -2096,6 +2096,12 @@ static int proc_uptime_read(char *buf, size_t size, off_t offset,
        }
 
        total_len = snprintf(buf, size, "%ld %ld\n", reaperage, idletime);
+
+       if (total_len >= size){
+               d->size = size;
+               return size;
+       }
+
        d->size = total_len;
        return total_len;
 }