fix compiler warning

linux-application-whitelisting · May 25, 2023 · 38b79bc · 38b79bc
1 parent 957d272
commit 38b79bc
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/library/file.c b/src/library/file.c
@@ -221,6 +221,9 @@ char *get_file_from_fd(int fd, pid_t pid, size_t blen, char *buf)
 	char procfd_path[32];
 	ssize_t path_len;
 
+	if (blen == 0)
+		return NULL;
+
 	snprintf(procfd_path, sizeof(procfd_path)-1,
 		"/proc/self/fd/%d", fd);
 	path_len = readlink(procfd_path, buf, blen - 1);