selftests/proc/proc-subset-pid.c

4  * Permission to use, copy, modify, and distribute this software for any
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  * Test that "mount -t proc -o subset=pid" hides everything but pids,
18  * /proc/self and /proc/thread-self.
42 	if (unshare(CLONE_NEWNS) == -1) {  in make_private_proc()
48 	if (mount(NULL, "/", NULL, MS_PRIVATE|MS_REC, NULL) == -1) {  in make_private_proc()
51 	if (mount(NULL, "/proc", "proc", 0, "subset=pid") == -1) {  in make_private_proc()
60 		case '0':case '1':case '2':case '3':case '4':  in string_is_pid()
61 		case '5':case '6':case '7':case '8':case '9':  in string_is_pid()
64 		case '\0':  in string_is_pid()
88 		if (streq(de->d_name, ".")) {  in main()
91 			assert(de->d_type == DT_DIR);  in main()
92 		} else if (streq(de->d_name, "..")) {  in main()
95 			assert(de->d_type == DT_DIR);  in main()
96 		} else if (streq(de->d_name, "self")) {  in main()
99 			assert(de->d_type == DT_LNK);  in main()
100 		} else if (streq(de->d_name, "thread-self")) {  in main()
103 			assert(de->d_type == DT_LNK);  in main()
105 			if (!string_is_pid(de->d_name)) {  in main()
106 				fprintf(stderr, "d_name '%s'\n", de->d_name);  in main()
109 			assert(de->d_type == DT_DIR);  in main()
115 	assert(rv == -1 && errno == ENOENT);  in main()
118 	assert(fd == -1 && errno == ENOENT);  in main()