file_utils: surface ENOENT when falling back to openat()

Link: https://discuss.linuxcontainers.org/t/error-failed-to-retrieve-pid-of-executing-child-processSigned-off-by: Christian Brauner <christian.brauner@ubuntu.com>

file_utils: surface ENOENT when falling back to openat()
ebb79ad3 · Christian Brauner · 78598e2b · ebb79ad3
Unverified Commit ebb79ad3 authored Jul 08, 2021 by Christian Brauner
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file_utils.c src/lxc/file_utils.c +5 -1

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--- a/src/lxc/file_utils.c
+++ b/src/lxc/file_utils.c
@@ -663,7 +663,11 @@ int open_at(int dfd, const char *path, unsigned int o_flags,
 	if (errno != ENOSYS)
 		return -errno;

-	return openat(dfd, path, o_flags, mode);
+	fd = openat(dfd, path, o_flags, mode);
+	if (fd < 0)
+		return -errno;
+
+	return move_fd(fd);
 }

 int fd_make_nonblocking(int fd)