Commit 82e339c2 authored by @wuzhangjin's avatar @wuzhangjin Committed by Willy Tarreau
Browse files

selftests/nolibc: prepare: create /dev/zero 



/dev/zero is commonly used to allocate anonymous memory, it is a very
good file for tests, let's prepare it.

Suggested-by: default avatarWilly Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/lkml/20230702193306.GK16233@1wt.eu/


Signed-off-by: default avatarZhangjin Wu <falcon@tinylab.org>
Signed-off-by: default avatarWilly Tarreau <w@1wt.eu>
parent 938b5b98

tools/testing/selftests/nolibc/nolibc-test.c

+3 −1
Original line number Diff line number Diff line
@@ -894,11 +894,13 @@ int prepare(void) 
	 */

	if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {

		if (stat("/dev/console", &stat_buf) != 0 ||

		    stat("/dev/null", &stat_buf) != 0) {

		    stat("/dev/null", &stat_buf) != 0 ||

		    stat("/dev/zero", &stat_buf) != 0) {

			/* try devtmpfs first, otherwise fall back to manual creation */

			if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {

				mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));

				mknod("/dev/null",    0666 | S_IFCHR, makedev(1, 3));

				mknod("/dev/zero",    0666 | S_IFCHR, makedev(1, 5));

			}

		}

	}