Allow mkdir() race to succeed.

When two zygotes are starting, they both may try creating a mount
point after checking lstat().  The second mkdir() will result in
EEXIST, which is okay to ignore.

Bug: 7165469
Change-Id: If4411e2621f773c74cd05247899982fa5ebdd020

parent 0b76d020

libcutils/fs.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -55,9 +55,11 @@ int fs_prepare_dir(const char* path, mode_t mode, uid_t uid, gid_t gid) {

		create:
		if (TEMP_FAILURE_RETRY(mkdir(path, mode)) == -1) {
		if (errno != EEXIST) {
		ALOGE("Failed to mkdir(%s): %s", path, strerror(errno));
		return -1;
		}
		}

		fixup:
		if (TEMP_FAILURE_RETRY(chmod(path, mode)) == -1) {