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

/* SPDX-License-Identifier: LGPL-2.1+ */
/***
  This file is part of systemd.

  Copyright 2016 Lennart Poettering
***/

#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	This file is part of systemd.
	4
	5	Copyright 2016 Lennart Poettering
83555251 LP	6	***/
	7
	8	#include <sys/mount.h>
	9
c2a986d5 LP	10	#include "alloc-util.h"
	11	#include "def.h"
	12	#include "fd-util.h"
	13	#include "fileio.h"
	14	#include "hashmap.h"
83555251	15	#include "log.h"
ee3467c6	16	#include "log.h"
83555251	17	#include "mount-util.h"
9b1573ef	18	#include "path-util.h"
ee3467c6	19	#include "rm-rf.h"
83555251 LP	20	#include "string-util.h"
83555251 LP	21
c7383828 ZJS	22	static void test_mount_propagation_flags(const char *name, int ret, unsigned long expected) {
c7383828 ZJS	23	long unsigned flags;
83555251	24
85e55d14	25	assert_se(mount_propagation_flags_from_string(name, &flags) == ret);
c7383828 ZJS	26
	27	if (ret >= 0) {
	28	const char *c;
	29
	30	assert_se(flags == expected);
	31
	32	c = mount_propagation_flags_to_string(flags);
	33	if (isempty(name))
	34	assert_se(isempty(c));
	35	else
	36	assert_se(streq(c, name));
	37	}
83555251 LP	38	}
83555251 LP	39
c2a986d5 LP	40	static void test_mnt_id(void) {
	41	_cleanup_fclose_ FILE *f = NULL;
	42	Hashmap *h;
	43	Iterator i;
9b1573ef LP	44	char *p;
9b1573ef LP	45	void *k;
c2a986d5 LP	46	int r;
	47
	48	assert_se(f = fopen("/proc/self/mountinfo", "re"));
9b1573ef	49	assert_se(h = hashmap_new(&trivial_hash_ops));
c2a986d5 LP	50
	51	for (;;) {
	52	_cleanup_free_ char line = NULL, path = NULL;
c2a986d5 LP	53	int mnt_id;
	54
	55	r = read_line(f, LONG_LINE_MAX, &line);
	56	if (r == 0)
	57	break;
	58	assert_se(r > 0);
	59
	60	assert_se(sscanf(line, "%i %s %s %*s %ms", &mnt_id, &path) == 2);
	61
9b1573ef	62	assert_se(hashmap_put(h, INT_TO_PTR(mnt_id), path) >= 0);
c2a986d5 LP	63	path = NULL;
	64	}
	65
	66	HASHMAP_FOREACH_KEY(p, k, h, i) {
9b1573ef	67	int mnt_id = PTR_TO_INT(k), mnt_id2;
c2a986d5	68
9b1573ef	69	r = path_get_mnt_id(p, &mnt_id2);
112cc3b5 EV	70	if (r < 0) {
112cc3b5 EV	71	log_debug_errno(r, "Failed to get the mnt id of %s: %m\n", p);
c2a986d5 LP	72	continue;
	73	}
	74
9b1573ef LP	75	log_debug("mnt id of %s is %i\n", p, mnt_id2);
	76
	77	if (mnt_id == mnt_id2)
	78	continue;
c2a986d5	79
9b1573ef LP	80	/* The ids don't match? If so, then there are two mounts on the same path, let's check if that's really
	81	* the case */
	82	assert_se(path_equal_ptr(hashmap_get(h, INT_TO_PTR(mnt_id2)), p));
c2a986d5 LP	83	}
c2a986d5 LP	84
ec1d2909	85	hashmap_free_free(h);
c2a986d5 LP	86	}
c2a986d5 LP	87
ee3467c6 ZJS	88	static void test_path_is_mount_point(void) {
	89	int fd;
	90	char tmp_dir[] = "/tmp/test-path-is-mount-point-XXXXXX";
	91	_cleanup_free_ char file1 = NULL, file2 = NULL, link1 = NULL, link2 = NULL;
	92	_cleanup_free_ char dir1 = NULL, dir1file = NULL, dirlink1 = NULL, dirlink1file = NULL;
	93	_cleanup_free_ char dir2 = NULL, dir2file = NULL;
	94
	95	assert_se(path_is_mount_point("/", NULL, AT_SYMLINK_FOLLOW) > 0);
	96	assert_se(path_is_mount_point("/", NULL, 0) > 0);
b12d25a8 ZJS	97	assert_se(path_is_mount_point("//", NULL, AT_SYMLINK_FOLLOW) > 0);
b12d25a8 ZJS	98	assert_se(path_is_mount_point("//", NULL, 0) > 0);
ee3467c6 ZJS	99
	100	assert_se(path_is_mount_point("/proc", NULL, AT_SYMLINK_FOLLOW) > 0);
	101	assert_se(path_is_mount_point("/proc", NULL, 0) > 0);
b12d25a8 ZJS	102	assert_se(path_is_mount_point("/proc/", NULL, AT_SYMLINK_FOLLOW) > 0);
b12d25a8 ZJS	103	assert_se(path_is_mount_point("/proc/", NULL, 0) > 0);
ee3467c6 ZJS	104
	105	assert_se(path_is_mount_point("/proc/1", NULL, AT_SYMLINK_FOLLOW) == 0);
	106	assert_se(path_is_mount_point("/proc/1", NULL, 0) == 0);
b12d25a8 ZJS	107	assert_se(path_is_mount_point("/proc/1/", NULL, AT_SYMLINK_FOLLOW) == 0);
b12d25a8 ZJS	108	assert_se(path_is_mount_point("/proc/1/", NULL, 0) == 0);
ee3467c6 ZJS	109
	110	assert_se(path_is_mount_point("/sys", NULL, AT_SYMLINK_FOLLOW) > 0);
	111	assert_se(path_is_mount_point("/sys", NULL, 0) > 0);
b12d25a8 ZJS	112	assert_se(path_is_mount_point("/sys/", NULL, AT_SYMLINK_FOLLOW) > 0);
b12d25a8 ZJS	113	assert_se(path_is_mount_point("/sys/", NULL, 0) > 0);
ee3467c6 ZJS	114
	115	/* we'll create a hierarchy of different kinds of dir/file/link
	116	* layouts:
	117	*
	118	* <tmp>/file1, <tmp>/file2
	119	* <tmp>/link1 -> file1, <tmp>/link2 -> file2
	120	* <tmp>/dir1/
	121	* <tmp>/dir1/file
	122	* <tmp>/dirlink1 -> dir1
	123	* <tmp>/dirlink1file -> dirlink1/file
	124	* <tmp>/dir2/
	125	* <tmp>/dir2/file
	126	*/
	127
	128	/* file mountpoints */
	129	assert_se(mkdtemp(tmp_dir) != NULL);
	130	file1 = path_join(NULL, tmp_dir, "file1");
	131	assert_se(file1);
	132	file2 = path_join(NULL, tmp_dir, "file2");
	133	assert_se(file2);
	134	fd = open(file1, O_WRONLY\|O_CREAT\|O_EXCL\|O_CLOEXEC, 0664);
	135	assert_se(fd > 0);
	136	close(fd);
	137	fd = open(file2, O_WRONLY\|O_CREAT\|O_EXCL\|O_CLOEXEC, 0664);
	138	assert_se(fd > 0);
	139	close(fd);
	140	link1 = path_join(NULL, tmp_dir, "link1");
	141	assert_se(link1);
	142	assert_se(symlink("file1", link1) == 0);
	143	link2 = path_join(NULL, tmp_dir, "link2");
	144	assert_se(link1);
	145	assert_se(symlink("file2", link2) == 0);
	146
	147	assert_se(path_is_mount_point(file1, NULL, AT_SYMLINK_FOLLOW) == 0);
	148	assert_se(path_is_mount_point(file1, NULL, 0) == 0);
	149	assert_se(path_is_mount_point(link1, NULL, AT_SYMLINK_FOLLOW) == 0);
	150	assert_se(path_is_mount_point(link1, NULL, 0) == 0);
	151
	152	/* directory mountpoints */
	153	dir1 = path_join(NULL, tmp_dir, "dir1");
	154	assert_se(dir1);
	155	assert_se(mkdir(dir1, 0755) == 0);
	156	dirlink1 = path_join(NULL, tmp_dir, "dirlink1");
	157	assert_se(dirlink1);
	158	assert_se(symlink("dir1", dirlink1) == 0);
	159	dirlink1file = path_join(NULL, tmp_dir, "dirlink1file");
	160	assert_se(dirlink1file);
	161	assert_se(symlink("dirlink1/file", dirlink1file) == 0);
	162	dir2 = path_join(NULL, tmp_dir, "dir2");
	163	assert_se(dir2);
	164	assert_se(mkdir(dir2, 0755) == 0);
	165
	166	assert_se(path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW) == 0);
	167	assert_se(path_is_mount_point(dir1, NULL, 0) == 0);
	168	assert_se(path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW) == 0);
	169	assert_se(path_is_mount_point(dirlink1, NULL, 0) == 0);
	170
	171	/* file in subdirectory mountpoints */
	172	dir1file = path_join(NULL, dir1, "file");
	173	assert_se(dir1file);
	174	fd = open(dir1file, O_WRONLY\|O_CREAT\|O_EXCL\|O_CLOEXEC, 0664);
	175	assert_se(fd > 0);
	176	close(fd);
	177
178	assert_se(path_is_mount_point(dir1file, NULL, AT_SYMLINK_FOLLOW) == 0);
179	assert_se(path_is_mount_point(dir1file, NULL, 0) == 0);
180	assert_se(path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW) == 0);
181	assert_se(path_is_mount_point(dirlink1file, NULL, 0) == 0);
182
183	/* these tests will only work as root */
184	if (mount(file1, file2, NULL, MS_BIND, NULL) >= 0) {
b12d25a8 ZJS	185	int rf, rt, rdf, rdt, rlf, rlt, rl1f, rl1t;
b12d25a8 ZJS	186	const char *file2d;
ee3467c6 ZJS	187
	188	/* files */
	189	/* capture results in vars, to avoid dangling mounts on failure */
b12d25a8	190	log_info("%s: %s", __func__, file2);
ee3467c6 ZJS	191	rf = path_is_mount_point(file2, NULL, 0);
ee3467c6 ZJS	192	rt = path_is_mount_point(file2, NULL, AT_SYMLINK_FOLLOW);
b12d25a8 ZJS	193
	194	file2d = strjoina(file2, "/");
	195	log_info("%s: %s", __func__, file2d);
	196	rdf = path_is_mount_point(file2d, NULL, 0);
	197	rdt = path_is_mount_point(file2d, NULL, AT_SYMLINK_FOLLOW);
	198
	199	log_info("%s: %s", __func__, link2);
ee3467c6 ZJS	200	rlf = path_is_mount_point(link2, NULL, 0);
	201	rlt = path_is_mount_point(link2, NULL, AT_SYMLINK_FOLLOW);
	202
	203	assert_se(umount(file2) == 0);
	204
	205	assert_se(rf == 1);
	206	assert_se(rt == 1);
b12d25a8 ZJS	207	assert_se(rdf == -ENOTDIR);
b12d25a8 ZJS	208	assert_se(rdt == -ENOTDIR);
ee3467c6 ZJS	209	assert_se(rlf == 0);
	210	assert_se(rlt == 1);
	211
	212	/* dirs */
	213	dir2file = path_join(NULL, dir2, "file");
	214	assert_se(dir2file);
	215	fd = open(dir2file, O_WRONLY\|O_CREAT\|O_EXCL\|O_CLOEXEC, 0664);
	216	assert_se(fd > 0);
	217	close(fd);
	218
	219	assert_se(mount(dir2, dir1, NULL, MS_BIND, NULL) >= 0);
	220
b12d25a8	221	log_info("%s: %s", __func__, dir1);
ee3467c6 ZJS	222	rf = path_is_mount_point(dir1, NULL, 0);
ee3467c6 ZJS	223	rt = path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW);
b12d25a8	224	log_info("%s: %s", __func__, dirlink1);
ee3467c6 ZJS	225	rlf = path_is_mount_point(dirlink1, NULL, 0);
ee3467c6 ZJS	226	rlt = path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW);
b12d25a8	227	log_info("%s: %s", __func__, dirlink1file);
ee3467c6 ZJS	228	/* its parent is a mount point, but not /file itself */
	229	rl1f = path_is_mount_point(dirlink1file, NULL, 0);
	230	rl1t = path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW);
	231
	232	assert_se(umount(dir1) == 0);
	233
	234	assert_se(rf == 1);
	235	assert_se(rt == 1);
	236	assert_se(rlf == 0);
	237	assert_se(rlt == 1);
	238	assert_se(rl1f == 0);
	239	assert_se(rl1t == 0);
	240
	241	} else
	242	printf("Skipping bind mount file test: %m\n");
	243
	244	assert_se(rm_rf(tmp_dir, REMOVE_ROOT\|REMOVE_PHYSICAL) == 0);
	245	}
	246
f27b437b YW	247	static void test_mount_option_mangle(void) {
	248	char *opts = NULL;
	249	unsigned long f;
	250
	251	assert_se(mount_option_mangle(NULL, MS_RDONLY\|MS_NOSUID, &f, &opts) == 0);
	252	assert_se(f == (MS_RDONLY\|MS_NOSUID));
	253	assert_se(opts == NULL);
	254
	255	assert_se(mount_option_mangle("", MS_RDONLY\|MS_NOSUID, &f, &opts) == 0);
	256	assert_se(f == (MS_RDONLY\|MS_NOSUID));
	257	assert_se(opts == NULL);
	258
	259	assert_se(mount_option_mangle("ro,nosuid,nodev,noexec", 0, &f, &opts) == 0);
	260	assert_se(f == (MS_RDONLY\|MS_NOSUID\|MS_NODEV\|MS_NOEXEC));
	261	assert_se(opts == NULL);
	262
	263	assert_se(mount_option_mangle("ro,nosuid,nodev,noexec,mode=755", 0, &f, &opts) == 0);
	264	assert_se(f == (MS_RDONLY\|MS_NOSUID\|MS_NODEV\|MS_NOEXEC));
	265	assert_se(streq(opts, "mode=755"));
	266	opts = mfree(opts);
	267
	268	assert_se(mount_option_mangle("rw,nosuid,foo,hogehoge,nodev,mode=755", 0, &f, &opts) == 0);
	269	assert_se(f == (MS_NOSUID\|MS_NODEV));
	270	assert_se(streq(opts, "foo,hogehoge,mode=755"));
	271	opts = mfree(opts);
	272
	273	assert_se(mount_option_mangle("rw,nosuid,nodev,noexec,relatime,net_cls,net_prio", MS_RDONLY, &f, &opts) == 0);
	274	assert_se(f == (MS_NOSUID\|MS_NODEV\|MS_NOEXEC\|MS_RELATIME));
	275	assert_se(streq(opts, "net_cls,net_prio"));
	276	opts = mfree(opts);
	277
	278	assert_se(mount_option_mangle("rw,nosuid,nodev,relatime,size=1630748k,mode=700,uid=1000,gid=1000", MS_RDONLY, &f, &opts) == 0);
	279	assert_se(f == (MS_NOSUID\|MS_NODEV\|MS_RELATIME));
	280	assert_se(streq(opts, "size=1630748k,mode=700,uid=1000,gid=1000"));
	281	opts = mfree(opts);
	282
	283	assert_se(mount_option_mangle("size=1630748k,rw,gid=1000,,,nodev,relatime,,mode=700,nosuid,uid=1000", MS_RDONLY, &f, &opts) == 0);
	284	assert_se(f == (MS_NOSUID\|MS_NODEV\|MS_RELATIME));
	285	assert_se(streq(opts, "size=1630748k,gid=1000,mode=700,uid=1000"));
	286	opts = mfree(opts);
	287
	288	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);
	289	assert_se(f == (MS_NOSUID\|MS_NODEV));
	290	assert_se(streq(opts, "size=8143984k,nr_inodes=2035996,mode=755"));
	291	opts = mfree(opts);
	292
	293	assert_se(mount_option_mangle("rw,relatime,fmask=0022,,,dmask=0022", MS_RDONLY, &f, &opts) == 0);
	294	assert_se(f == MS_RELATIME);
	295	assert_se(streq(opts, "fmask=0022,dmask=0022"));
	296	opts = mfree(opts);
	297
	298	assert_se(mount_option_mangle("rw,relatime,fmask=0022,dmask=0022,\"hogehoge", MS_RDONLY, &f, &opts) < 0);
	299	}
	300
83555251 LP	301	int main(int argc, char *argv[]) {
	302
	303	log_set_max_level(LOG_DEBUG);
	304
c7383828 ZJS	305	test_mount_propagation_flags("shared", 0, MS_SHARED);
	306	test_mount_propagation_flags("slave", 0, MS_SLAVE);
	307	test_mount_propagation_flags("private", 0, MS_PRIVATE);
	308	test_mount_propagation_flags(NULL, 0, 0);
	309	test_mount_propagation_flags("", 0, 0);
	310	test_mount_propagation_flags("xxxx", -EINVAL, 0);
	311	test_mount_propagation_flags(" ", -EINVAL, 0);
83555251	312
c2a986d5	313	test_mnt_id();
ee3467c6	314	test_path_is_mount_point();
f27b437b	315	test_mount_option_mangle();
c2a986d5	316
83555251 LP	317	return 0;
83555251 LP	318	}