[thirdparty/systemd.git] / src / test / test-mount-util.c

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <sys/mount.h>

#include "alloc-util.h"
#include "def.h"
#include "fd-util.h"
#include "fileio.h"
#include "hashmap.h"
#include "log.h"
#include "log.h"
#include "mount-util.h"
#include "path-util.h"
#include "rm-rf.h"
#include "string-util.h"

static void test_mount_propagation_flags(const char *name, int ret, unsigned long expected) {
        long unsigned flags;

        assert_se(mount_propagation_flags_from_string(name, &flags) == ret);

        if (ret >= 0) {
                const char *c;

                assert_se(flags == expected);

                c = mount_propagation_flags_to_string(flags);
                if (isempty(name))
                        assert_se(isempty(c));
                else
                        assert_se(streq(c, name));
        }
}

static void test_mnt_id(void) {
        _cleanup_fclose_ FILE *f = NULL;
        Hashmap *h;
        Iterator i;
        char *p;
        void *k;
        int r;

        assert_se(f = fopen("/proc/self/mountinfo", "re"));
        assert_se(h = hashmap_new(&trivial_hash_ops));

        for (;;) {
                _cleanup_free_ char *line = NULL, *path = NULL;
                int mnt_id;

                r = read_line(f, LONG_LINE_MAX, &line);
                if (r == 0)
                        break;
                assert_se(r > 0);

                assert_se(sscanf(line, "%i %*s %*s %*s %ms", &mnt_id, &path) == 2);

                assert_se(hashmap_put(h, INT_TO_PTR(mnt_id), path) >= 0);
                path = NULL;
        }

        HASHMAP_FOREACH_KEY(p, k, h, i) {
                int mnt_id = PTR_TO_INT(k), mnt_id2;

                r = path_get_mnt_id(p, &mnt_id2);
                if (r < 0) {
                        log_debug_errno(r, "Failed to get the mnt id of %s: %m\n", p);
                        continue;
                }

                log_debug("mnt id of %s is %i\n", p, mnt_id2);

                if (mnt_id == mnt_id2)
                        continue;

                /* The ids don't match? If so, then there are two mounts on the same path, let's check if that's really
                 * the case */
                assert_se(path_equal_ptr(hashmap_get(h, INT_TO_PTR(mnt_id2)), p));
        }

        hashmap_free_free(h);
}

static void test_path_is_mount_point(void) {
        int fd;
        char tmp_dir[] = "/tmp/test-path-is-mount-point-XXXXXX";
        _cleanup_free_ char *file1 = NULL, *file2 = NULL, *link1 = NULL, *link2 = NULL;
        _cleanup_free_ char *dir1 = NULL, *dir1file = NULL, *dirlink1 = NULL, *dirlink1file = NULL;
        _cleanup_free_ char *dir2 = NULL, *dir2file = NULL;

        assert_se(path_is_mount_point("/", NULL, AT_SYMLINK_FOLLOW) > 0);
        assert_se(path_is_mount_point("/", NULL, 0) > 0);
        assert_se(path_is_mount_point("//", NULL, AT_SYMLINK_FOLLOW) > 0);
        assert_se(path_is_mount_point("//", NULL, 0) > 0);

        assert_se(path_is_mount_point("/proc", NULL, AT_SYMLINK_FOLLOW) > 0);
        assert_se(path_is_mount_point("/proc", NULL, 0) > 0);
        assert_se(path_is_mount_point("/proc/", NULL, AT_SYMLINK_FOLLOW) > 0);
        assert_se(path_is_mount_point("/proc/", NULL, 0) > 0);

        assert_se(path_is_mount_point("/proc/1", NULL, AT_SYMLINK_FOLLOW) == 0);
        assert_se(path_is_mount_point("/proc/1", NULL, 0) == 0);
        assert_se(path_is_mount_point("/proc/1/", NULL, AT_SYMLINK_FOLLOW) == 0);
        assert_se(path_is_mount_point("/proc/1/", NULL, 0) == 0);

        assert_se(path_is_mount_point("/sys", NULL, AT_SYMLINK_FOLLOW) > 0);
        assert_se(path_is_mount_point("/sys", NULL, 0) > 0);
        assert_se(path_is_mount_point("/sys/", NULL, AT_SYMLINK_FOLLOW) > 0);
        assert_se(path_is_mount_point("/sys/", NULL, 0) > 0);

        /* we'll create a hierarchy of different kinds of dir/file/link
         * layouts:
         *
         * <tmp>/file1, <tmp>/file2
         * <tmp>/link1 -> file1, <tmp>/link2 -> file2
         * <tmp>/dir1/
         * <tmp>/dir1/file
         * <tmp>/dirlink1 -> dir1
         * <tmp>/dirlink1file -> dirlink1/file
         * <tmp>/dir2/
         * <tmp>/dir2/file
         */

        /* file mountpoints */
        assert_se(mkdtemp(tmp_dir) != NULL);
        file1 = path_join(NULL, tmp_dir, "file1");
        assert_se(file1);
        file2 = path_join(NULL, tmp_dir, "file2");
        assert_se(file2);
        fd = open(file1, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0664);
        assert_se(fd > 0);
        close(fd);
        fd = open(file2, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0664);
        assert_se(fd > 0);
        close(fd);
        link1 = path_join(NULL, tmp_dir, "link1");
        assert_se(link1);
        assert_se(symlink("file1", link1) == 0);
        link2 = path_join(NULL, tmp_dir, "link2");
        assert_se(link1);
        assert_se(symlink("file2", link2) == 0);

        assert_se(path_is_mount_point(file1, NULL, AT_SYMLINK_FOLLOW) == 0);
        assert_se(path_is_mount_point(file1, NULL, 0) == 0);
        assert_se(path_is_mount_point(link1, NULL, AT_SYMLINK_FOLLOW) == 0);
        assert_se(path_is_mount_point(link1, NULL, 0) == 0);

        /* directory mountpoints */
        dir1 = path_join(NULL, tmp_dir, "dir1");
        assert_se(dir1);
        assert_se(mkdir(dir1, 0755) == 0);
        dirlink1 = path_join(NULL, tmp_dir, "dirlink1");
        assert_se(dirlink1);
        assert_se(symlink("dir1", dirlink1) == 0);
        dirlink1file = path_join(NULL, tmp_dir, "dirlink1file");
        assert_se(dirlink1file);
        assert_se(symlink("dirlink1/file", dirlink1file) == 0);
        dir2 = path_join(NULL, tmp_dir, "dir2");
        assert_se(dir2);
        assert_se(mkdir(dir2, 0755) == 0);

        assert_se(path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW) == 0);
        assert_se(path_is_mount_point(dir1, NULL, 0) == 0);
        assert_se(path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW) == 0);
        assert_se(path_is_mount_point(dirlink1, NULL, 0) == 0);

        /* file in subdirectory mountpoints */
        dir1file = path_join(NULL, dir1, "file");
        assert_se(dir1file);
        fd = open(dir1file, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0664);
        assert_se(fd > 0);
        close(fd);

        assert_se(path_is_mount_point(dir1file, NULL, AT_SYMLINK_FOLLOW) == 0);
        assert_se(path_is_mount_point(dir1file, NULL, 0) == 0);
        assert_se(path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW) == 0);
        assert_se(path_is_mount_point(dirlink1file, NULL, 0) == 0);

        /* these tests will only work as root */
        if (mount(file1, file2, NULL, MS_BIND, NULL) >= 0) {
                int rf, rt, rdf, rdt, rlf, rlt, rl1f, rl1t;
                const char *file2d;

                /* files */
                /* capture results in vars, to avoid dangling mounts on failure */
                log_info("%s: %s", __func__, file2);
                rf = path_is_mount_point(file2, NULL, 0);
                rt = path_is_mount_point(file2, NULL, AT_SYMLINK_FOLLOW);

                file2d = strjoina(file2, "/");
                log_info("%s: %s", __func__, file2d);
                rdf = path_is_mount_point(file2d, NULL, 0);
                rdt = path_is_mount_point(file2d, NULL, AT_SYMLINK_FOLLOW);

                log_info("%s: %s", __func__, link2);
                rlf = path_is_mount_point(link2, NULL, 0);
                rlt = path_is_mount_point(link2, NULL, AT_SYMLINK_FOLLOW);

                assert_se(umount(file2) == 0);

                assert_se(rf == 1);
                assert_se(rt == 1);
                assert_se(rdf == -ENOTDIR);
                assert_se(rdt == -ENOTDIR);
                assert_se(rlf == 0);
                assert_se(rlt == 1);

                /* dirs */
                dir2file = path_join(NULL, dir2, "file");
                assert_se(dir2file);
                fd = open(dir2file, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0664);
                assert_se(fd > 0);
                close(fd);

                assert_se(mount(dir2, dir1, NULL, MS_BIND, NULL) >= 0);

                log_info("%s: %s", __func__, dir1);
                rf = path_is_mount_point(dir1, NULL, 0);
                rt = path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW);
                log_info("%s: %s", __func__, dirlink1);
                rlf = path_is_mount_point(dirlink1, NULL, 0);
                rlt = path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW);
                log_info("%s: %s", __func__, dirlink1file);
                /* its parent is a mount point, but not /file itself */
                rl1f = path_is_mount_point(dirlink1file, NULL, 0);
                rl1t = path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW);

                assert_se(umount(dir1) == 0);

                assert_se(rf == 1);
                assert_se(rt == 1);
                assert_se(rlf == 0);
                assert_se(rlt == 1);
                assert_se(rl1f == 0);
                assert_se(rl1t == 0);

        } else
                printf("Skipping bind mount file test: %m\n");

        assert_se(rm_rf(tmp_dir, REMOVE_ROOT|REMOVE_PHYSICAL) == 0);
}

static void test_mount_option_mangle(void) {
        char *opts = NULL;
        unsigned long f;

        assert_se(mount_option_mangle(NULL, MS_RDONLY|MS_NOSUID, &f, &opts) == 0);
        assert_se(f == (MS_RDONLY|MS_NOSUID));
        assert_se(opts == NULL);

        assert_se(mount_option_mangle("", MS_RDONLY|MS_NOSUID, &f, &opts) == 0);
        assert_se(f == (MS_RDONLY|MS_NOSUID));
        assert_se(opts == NULL);

        assert_se(mount_option_mangle("ro,nosuid,nodev,noexec", 0, &f, &opts) == 0);
        assert_se(f == (MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC));
        assert_se(opts == NULL);

        assert_se(mount_option_mangle("ro,nosuid,nodev,noexec,mode=755", 0, &f, &opts) == 0);
        assert_se(f == (MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC));
        assert_se(streq(opts, "mode=755"));
        opts = mfree(opts);

        assert_se(mount_option_mangle("rw,nosuid,foo,hogehoge,nodev,mode=755", 0, &f, &opts) == 0);
        assert_se(f == (MS_NOSUID|MS_NODEV));
        assert_se(streq(opts, "foo,hogehoge,mode=755"));
        opts = mfree(opts);

        assert_se(mount_option_mangle("rw,nosuid,nodev,noexec,relatime,net_cls,net_prio", MS_RDONLY, &f, &opts) == 0);
        assert_se(f == (MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_RELATIME));
        assert_se(streq(opts, "net_cls,net_prio"));
        opts = mfree(opts);

        assert_se(mount_option_mangle("rw,nosuid,nodev,relatime,size=1630748k,mode=700,uid=1000,gid=1000", MS_RDONLY, &f, &opts) == 0);
        assert_se(f == (MS_NOSUID|MS_NODEV|MS_RELATIME));
        assert_se(streq(opts, "size=1630748k,mode=700,uid=1000,gid=1000"));
        opts = mfree(opts);

        assert_se(mount_option_mangle("size=1630748k,rw,gid=1000,,,nodev,relatime,,mode=700,nosuid,uid=1000", MS_RDONLY, &f, &opts) == 0);
        assert_se(f == (MS_NOSUID|MS_NODEV|MS_RELATIME));
        assert_se(streq(opts, "size=1630748k,gid=1000,mode=700,uid=1000"));
        opts = mfree(opts);

        assert_se(mount_option_mangle("rw,exec,size=8143984k,nr_inodes=2035996,mode=755", MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV, &f, &opts) == 0);
        assert_se(f == (MS_NOSUID|MS_NODEV));
        assert_se(streq(opts, "size=8143984k,nr_inodes=2035996,mode=755"));
        opts = mfree(opts);

        assert_se(mount_option_mangle("rw,relatime,fmask=0022,,,dmask=0022", MS_RDONLY, &f, &opts) == 0);
        assert_se(f == MS_RELATIME);
        assert_se(streq(opts, "fmask=0022,dmask=0022"));
        opts = mfree(opts);

        assert_se(mount_option_mangle("rw,relatime,fmask=0022,dmask=0022,\"hogehoge", MS_RDONLY, &f, &opts) < 0);
}

int main(int argc, char *argv[]) {

        log_set_max_level(LOG_DEBUG);

        test_mount_propagation_flags("shared", 0, MS_SHARED);
        test_mount_propagation_flags("slave", 0, MS_SLAVE);
        test_mount_propagation_flags("private", 0, MS_PRIVATE);
        test_mount_propagation_flags(NULL, 0, 0);
        test_mount_propagation_flags("", 0, 0);
        test_mount_propagation_flags("xxxx", -EINVAL, 0);
        test_mount_propagation_flags(" ", -EINVAL, 0);

        test_mnt_id();
        test_path_is_mount_point();
        test_mount_option_mangle();

        return 0;
}
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
83555251 LP	2
	3	#include <sys/mount.h>
	4
c2a986d5 LP	5	#include "alloc-util.h"
	6	#include "def.h"
	7	#include "fd-util.h"
	8	#include "fileio.h"
	9	#include "hashmap.h"
83555251	10	#include "log.h"
ee3467c6	11	#include "log.h"
83555251	12	#include "mount-util.h"
9b1573ef	13	#include "path-util.h"
ee3467c6	14	#include "rm-rf.h"
83555251 LP	15	#include "string-util.h"
83555251 LP	16
c7383828 ZJS	17	static void test_mount_propagation_flags(const char *name, int ret, unsigned long expected) {
c7383828 ZJS	18	long unsigned flags;
83555251	19
85e55d14	20	assert_se(mount_propagation_flags_from_string(name, &flags) == ret);
c7383828 ZJS	21
	22	if (ret >= 0) {
	23	const char *c;
	24
	25	assert_se(flags == expected);
	26
	27	c = mount_propagation_flags_to_string(flags);
	28	if (isempty(name))
	29	assert_se(isempty(c));
	30	else
	31	assert_se(streq(c, name));
	32	}
83555251 LP	33	}
83555251 LP	34
c2a986d5 LP	35	static void test_mnt_id(void) {
	36	_cleanup_fclose_ FILE *f = NULL;
	37	Hashmap *h;
	38	Iterator i;
9b1573ef LP	39	char *p;
9b1573ef LP	40	void *k;
c2a986d5 LP	41	int r;
	42
	43	assert_se(f = fopen("/proc/self/mountinfo", "re"));
9b1573ef	44	assert_se(h = hashmap_new(&trivial_hash_ops));
c2a986d5 LP	45
	46	for (;;) {
	47	_cleanup_free_ char line = NULL, path = NULL;
c2a986d5 LP	48	int mnt_id;
	49
	50	r = read_line(f, LONG_LINE_MAX, &line);
	51	if (r == 0)
	52	break;
	53	assert_se(r > 0);
	54
	55	assert_se(sscanf(line, "%i %s %s %*s %ms", &mnt_id, &path) == 2);
	56
9b1573ef	57	assert_se(hashmap_put(h, INT_TO_PTR(mnt_id), path) >= 0);
c2a986d5 LP	58	path = NULL;
	59	}
	60
	61	HASHMAP_FOREACH_KEY(p, k, h, i) {
9b1573ef	62	int mnt_id = PTR_TO_INT(k), mnt_id2;
c2a986d5	63
9b1573ef	64	r = path_get_mnt_id(p, &mnt_id2);
112cc3b5 EV	65	if (r < 0) {
112cc3b5 EV	66	log_debug_errno(r, "Failed to get the mnt id of %s: %m\n", p);
c2a986d5 LP	67	continue;
	68	}
	69
9b1573ef LP	70	log_debug("mnt id of %s is %i\n", p, mnt_id2);
	71
	72	if (mnt_id == mnt_id2)
	73	continue;
c2a986d5	74
9b1573ef LP	75	/* The ids don't match? If so, then there are two mounts on the same path, let's check if that's really
	76	* the case */
	77	assert_se(path_equal_ptr(hashmap_get(h, INT_TO_PTR(mnt_id2)), p));
c2a986d5 LP	78	}
c2a986d5 LP	79
ec1d2909	80	hashmap_free_free(h);
c2a986d5 LP	81	}
c2a986d5 LP	82
ee3467c6 ZJS	83	static void test_path_is_mount_point(void) {
	84	int fd;
	85	char tmp_dir[] = "/tmp/test-path-is-mount-point-XXXXXX";
	86	_cleanup_free_ char file1 = NULL, file2 = NULL, link1 = NULL, link2 = NULL;
	87	_cleanup_free_ char dir1 = NULL, dir1file = NULL, dirlink1 = NULL, dirlink1file = NULL;
	88	_cleanup_free_ char dir2 = NULL, dir2file = NULL;
	89
	90	assert_se(path_is_mount_point("/", NULL, AT_SYMLINK_FOLLOW) > 0);
	91	assert_se(path_is_mount_point("/", NULL, 0) > 0);
b12d25a8 ZJS	92	assert_se(path_is_mount_point("//", NULL, AT_SYMLINK_FOLLOW) > 0);
b12d25a8 ZJS	93	assert_se(path_is_mount_point("//", NULL, 0) > 0);
ee3467c6 ZJS	94
	95	assert_se(path_is_mount_point("/proc", NULL, AT_SYMLINK_FOLLOW) > 0);
	96	assert_se(path_is_mount_point("/proc", NULL, 0) > 0);
b12d25a8 ZJS	97	assert_se(path_is_mount_point("/proc/", NULL, AT_SYMLINK_FOLLOW) > 0);
b12d25a8 ZJS	98	assert_se(path_is_mount_point("/proc/", NULL, 0) > 0);
ee3467c6 ZJS	99
	100	assert_se(path_is_mount_point("/proc/1", NULL, AT_SYMLINK_FOLLOW) == 0);
	101	assert_se(path_is_mount_point("/proc/1", NULL, 0) == 0);
b12d25a8 ZJS	102	assert_se(path_is_mount_point("/proc/1/", NULL, AT_SYMLINK_FOLLOW) == 0);
b12d25a8 ZJS	103	assert_se(path_is_mount_point("/proc/1/", NULL, 0) == 0);
ee3467c6 ZJS	104
	105	assert_se(path_is_mount_point("/sys", NULL, AT_SYMLINK_FOLLOW) > 0);
	106	assert_se(path_is_mount_point("/sys", NULL, 0) > 0);
b12d25a8 ZJS	107	assert_se(path_is_mount_point("/sys/", NULL, AT_SYMLINK_FOLLOW) > 0);
b12d25a8 ZJS	108	assert_se(path_is_mount_point("/sys/", NULL, 0) > 0);
ee3467c6 ZJS	109
	110	/* we'll create a hierarchy of different kinds of dir/file/link
	111	* layouts:
	112	*
	113	* <tmp>/file1, <tmp>/file2
	114	* <tmp>/link1 -> file1, <tmp>/link2 -> file2
	115	* <tmp>/dir1/
	116	* <tmp>/dir1/file
	117	* <tmp>/dirlink1 -> dir1
	118	* <tmp>/dirlink1file -> dirlink1/file
	119	* <tmp>/dir2/
	120	* <tmp>/dir2/file
	121	*/
	122
	123	/* file mountpoints */
	124	assert_se(mkdtemp(tmp_dir) != NULL);
	125	file1 = path_join(NULL, tmp_dir, "file1");
	126	assert_se(file1);
	127	file2 = path_join(NULL, tmp_dir, "file2");
	128	assert_se(file2);
	129	fd = open(file1, O_WRONLY\|O_CREAT\|O_EXCL\|O_CLOEXEC, 0664);
	130	assert_se(fd > 0);
	131	close(fd);
	132	fd = open(file2, O_WRONLY\|O_CREAT\|O_EXCL\|O_CLOEXEC, 0664);
	133	assert_se(fd > 0);
	134	close(fd);
	135	link1 = path_join(NULL, tmp_dir, "link1");
	136	assert_se(link1);
	137	assert_se(symlink("file1", link1) == 0);
	138	link2 = path_join(NULL, tmp_dir, "link2");
	139	assert_se(link1);
	140	assert_se(symlink("file2", link2) == 0);
	141
	142	assert_se(path_is_mount_point(file1, NULL, AT_SYMLINK_FOLLOW) == 0);
	143	assert_se(path_is_mount_point(file1, NULL, 0) == 0);
	144	assert_se(path_is_mount_point(link1, NULL, AT_SYMLINK_FOLLOW) == 0);
	145	assert_se(path_is_mount_point(link1, NULL, 0) == 0);
	146
	147	/* directory mountpoints */
	148	dir1 = path_join(NULL, tmp_dir, "dir1");
	149	assert_se(dir1);
	150	assert_se(mkdir(dir1, 0755) == 0);
	151	dirlink1 = path_join(NULL, tmp_dir, "dirlink1");
	152	assert_se(dirlink1);
	153	assert_se(symlink("dir1", dirlink1) == 0);
	154	dirlink1file = path_join(NULL, tmp_dir, "dirlink1file");
	155	assert_se(dirlink1file);
	156	assert_se(symlink("dirlink1/file", dirlink1file) == 0);
	157	dir2 = path_join(NULL, tmp_dir, "dir2");
	158	assert_se(dir2);
	159	assert_se(mkdir(dir2, 0755) == 0);
	160
	161	assert_se(path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW) == 0);
	162	assert_se(path_is_mount_point(dir1, NULL, 0) == 0);
	163	assert_se(path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW) == 0);
	164	assert_se(path_is_mount_point(dirlink1, NULL, 0) == 0);
	165
	166	/* file in subdirectory mountpoints */
	167	dir1file = path_join(NULL, dir1, "file");
	168	assert_se(dir1file);
	169	fd = open(dir1file, O_WRONLY\|O_CREAT\|O_EXCL\|O_CLOEXEC, 0664);
	170	assert_se(fd > 0);
	171	close(fd);
	172
173	assert_se(path_is_mount_point(dir1file, NULL, AT_SYMLINK_FOLLOW) == 0);
174	assert_se(path_is_mount_point(dir1file, NULL, 0) == 0);
175	assert_se(path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW) == 0);
176	assert_se(path_is_mount_point(dirlink1file, NULL, 0) == 0);
177
178	/* these tests will only work as root */
179	if (mount(file1, file2, NULL, MS_BIND, NULL) >= 0) {
b12d25a8 ZJS	180	int rf, rt, rdf, rdt, rlf, rlt, rl1f, rl1t;
b12d25a8 ZJS	181	const char *file2d;
ee3467c6 ZJS	182
	183	/* files */
	184	/* capture results in vars, to avoid dangling mounts on failure */
b12d25a8	185	log_info("%s: %s", __func__, file2);
ee3467c6 ZJS	186	rf = path_is_mount_point(file2, NULL, 0);
ee3467c6 ZJS	187	rt = path_is_mount_point(file2, NULL, AT_SYMLINK_FOLLOW);
b12d25a8 ZJS	188
	189	file2d = strjoina(file2, "/");
	190	log_info("%s: %s", __func__, file2d);
	191	rdf = path_is_mount_point(file2d, NULL, 0);
	192	rdt = path_is_mount_point(file2d, NULL, AT_SYMLINK_FOLLOW);
	193
	194	log_info("%s: %s", __func__, link2);
ee3467c6 ZJS	195	rlf = path_is_mount_point(link2, NULL, 0);
	196	rlt = path_is_mount_point(link2, NULL, AT_SYMLINK_FOLLOW);
	197
	198	assert_se(umount(file2) == 0);
	199
	200	assert_se(rf == 1);
	201	assert_se(rt == 1);
b12d25a8 ZJS	202	assert_se(rdf == -ENOTDIR);
b12d25a8 ZJS	203	assert_se(rdt == -ENOTDIR);
ee3467c6 ZJS	204	assert_se(rlf == 0);
	205	assert_se(rlt == 1);
	206
	207	/* dirs */
	208	dir2file = path_join(NULL, dir2, "file");
	209	assert_se(dir2file);
	210	fd = open(dir2file, O_WRONLY\|O_CREAT\|O_EXCL\|O_CLOEXEC, 0664);
	211	assert_se(fd > 0);
	212	close(fd);
	213
	214	assert_se(mount(dir2, dir1, NULL, MS_BIND, NULL) >= 0);
	215
b12d25a8	216	log_info("%s: %s", __func__, dir1);
ee3467c6 ZJS	217	rf = path_is_mount_point(dir1, NULL, 0);
ee3467c6 ZJS	218	rt = path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW);
b12d25a8	219	log_info("%s: %s", __func__, dirlink1);
ee3467c6 ZJS	220	rlf = path_is_mount_point(dirlink1, NULL, 0);
ee3467c6 ZJS	221	rlt = path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW);
b12d25a8	222	log_info("%s: %s", __func__, dirlink1file);
ee3467c6 ZJS	223	/* its parent is a mount point, but not /file itself */
	224	rl1f = path_is_mount_point(dirlink1file, NULL, 0);
	225	rl1t = path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW);
	226
	227	assert_se(umount(dir1) == 0);
	228
	229	assert_se(rf == 1);
	230	assert_se(rt == 1);
	231	assert_se(rlf == 0);
	232	assert_se(rlt == 1);
	233	assert_se(rl1f == 0);
	234	assert_se(rl1t == 0);
	235
	236	} else
	237	printf("Skipping bind mount file test: %m\n");
	238
	239	assert_se(rm_rf(tmp_dir, REMOVE_ROOT\|REMOVE_PHYSICAL) == 0);
	240	}
	241
f27b437b YW	242	static void test_mount_option_mangle(void) {
	243	char *opts = NULL;
	244	unsigned long f;
	245
	246	assert_se(mount_option_mangle(NULL, MS_RDONLY\|MS_NOSUID, &f, &opts) == 0);
	247	assert_se(f == (MS_RDONLY\|MS_NOSUID));
	248	assert_se(opts == NULL);
	249
	250	assert_se(mount_option_mangle("", MS_RDONLY\|MS_NOSUID, &f, &opts) == 0);
	251	assert_se(f == (MS_RDONLY\|MS_NOSUID));
	252	assert_se(opts == NULL);
	253
	254	assert_se(mount_option_mangle("ro,nosuid,nodev,noexec", 0, &f, &opts) == 0);
	255	assert_se(f == (MS_RDONLY\|MS_NOSUID\|MS_NODEV\|MS_NOEXEC));
	256	assert_se(opts == NULL);
	257
	258	assert_se(mount_option_mangle("ro,nosuid,nodev,noexec,mode=755", 0, &f, &opts) == 0);
	259	assert_se(f == (MS_RDONLY\|MS_NOSUID\|MS_NODEV\|MS_NOEXEC));
	260	assert_se(streq(opts, "mode=755"));
	261	opts = mfree(opts);
	262
	263	assert_se(mount_option_mangle("rw,nosuid,foo,hogehoge,nodev,mode=755", 0, &f, &opts) == 0);
	264	assert_se(f == (MS_NOSUID\|MS_NODEV));
	265	assert_se(streq(opts, "foo,hogehoge,mode=755"));
	266	opts = mfree(opts);
	267
	268	assert_se(mount_option_mangle("rw,nosuid,nodev,noexec,relatime,net_cls,net_prio", MS_RDONLY, &f, &opts) == 0);
	269	assert_se(f == (MS_NOSUID\|MS_NODEV\|MS_NOEXEC\|MS_RELATIME));
	270	assert_se(streq(opts, "net_cls,net_prio"));
	271	opts = mfree(opts);
	272
	273	assert_se(mount_option_mangle("rw,nosuid,nodev,relatime,size=1630748k,mode=700,uid=1000,gid=1000", MS_RDONLY, &f, &opts) == 0);
	274	assert_se(f == (MS_NOSUID\|MS_NODEV\|MS_RELATIME));
	275	assert_se(streq(opts, "size=1630748k,mode=700,uid=1000,gid=1000"));
	276	opts = mfree(opts);
	277
	278	assert_se(mount_option_mangle("size=1630748k,rw,gid=1000,,,nodev,relatime,,mode=700,nosuid,uid=1000", MS_RDONLY, &f, &opts) == 0);
	279	assert_se(f == (MS_NOSUID\|MS_NODEV\|MS_RELATIME));
	280	assert_se(streq(opts, "size=1630748k,gid=1000,mode=700,uid=1000"));
	281	opts = mfree(opts);
	282
	283	assert_se(mount_option_mangle("rw,exec,size=8143984k,nr_inodes=2035996,mode=755", MS_RDONLY\|MS_NOSUID\|MS_NOEXEC\|MS_NODEV, &f, &opts) == 0);
	284	assert_se(f == (MS_NOSUID\|MS_NODEV));
	285	assert_se(streq(opts, "size=8143984k,nr_inodes=2035996,mode=755"));
	286	opts = mfree(opts);
	287
	288	assert_se(mount_option_mangle("rw,relatime,fmask=0022,,,dmask=0022", MS_RDONLY, &f, &opts) == 0);
	289	assert_se(f == MS_RELATIME);
	290	assert_se(streq(opts, "fmask=0022,dmask=0022"));
	291	opts = mfree(opts);
	292
	293	assert_se(mount_option_mangle("rw,relatime,fmask=0022,dmask=0022,\"hogehoge", MS_RDONLY, &f, &opts) < 0);
	294	}
	295
83555251 LP	296	int main(int argc, char *argv[]) {
	297
	298	log_set_max_level(LOG_DEBUG);
	299
c7383828 ZJS	300	test_mount_propagation_flags("shared", 0, MS_SHARED);
	301	test_mount_propagation_flags("slave", 0, MS_SLAVE);
	302	test_mount_propagation_flags("private", 0, MS_PRIVATE);
	303	test_mount_propagation_flags(NULL, 0, 0);
	304	test_mount_propagation_flags("", 0, 0);
	305	test_mount_propagation_flags("xxxx", -EINVAL, 0);
	306	test_mount_propagation_flags(" ", -EINVAL, 0);
83555251	307
c2a986d5	308	test_mnt_id();
ee3467c6	309	test_path_is_mount_point();
f27b437b	310	test_mount_option_mangle();
c2a986d5	311
83555251 LP	312	return 0;
83555251 LP	313	}