10 #include <sys/mount.h>
21 #include <linux/mount.h>
220 	if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, 0))  in prepare_unpriv_mountns()
380 	ASSERT_EQ(mount("testing", "/tmp", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
385 	ASSERT_EQ(mount("testing", "/tmp/B", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
394 	ASSERT_EQ(mount("testing", "/tmp/B/BB", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
397 	ASSERT_EQ(mount("testing", "/mnt", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
402 	ASSERT_EQ(mount("testing", "/mnt/A", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
407 	ASSERT_EQ(mount("/tmp", "/mnt/A/AA", NULL, MS_BIND | MS_REC, NULL), 0);  in FIXTURE_SETUP()
411 	ASSERT_EQ(mount("testing", "/mnt/B", "ramfs",  in FIXTURE_SETUP()
416 	ASSERT_EQ(mount("testing", "/tmp/B/BB", "devpts",  in FIXTURE_SETUP()
631 	 * in the middle and the mount options need to be unchanged.  in TEST_F()
679 	 * We're holding a fd open to a mount somwhere in the middle so this  in TEST_F()
680 	 * needs to fail somewhere in the middle. After this the mount options  in TEST_F()
910 	/* Try to change mount options from multiple threads. */  in TEST_F()
1000 	ASSERT_EQ(mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, 0), 0);  in FIXTURE_SETUP()
1005 	ASSERT_EQ(mount("testing", "/tmp", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
1012 	ASSERT_EQ(mount("testing", "/tmp/B", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
1019 	ASSERT_EQ(mount("testing", "/tmp/B/BB", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
1022 	ASSERT_EQ(mount("testing", "/mnt", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
1027 	ASSERT_EQ(mount("testing", "/mnt/A", "tmpfs", MS_NOATIME | MS_NODEV,  in FIXTURE_SETUP()
1032 	ASSERT_EQ(mount("/tmp", "/mnt/A/AA", NULL, MS_BIND | MS_REC, NULL), 0);  in FIXTURE_SETUP()
1036 	ASSERT_EQ(mount("testing", "/mnt/B", "ramfs",  in FIXTURE_SETUP()
1041 	ASSERT_EQ(mount("testing", "/tmp/B/BB", "devpts",  in FIXTURE_SETUP()
1050 	ASSERT_EQ(system("mount -o loop -t ext4 /mnt/C/ext4.img /mnt/D/"), 0);  in FIXTURE_SETUP()
1074 		TH_LOG("failure: created idmapped mount with negative fd");  in TEST_F()
1092 		TH_LOG("failure: created idmapped mount with too large fd value");  in TEST_F()
1115 		TH_LOG("failure: created idmapped mount with closed fd");  in TEST_F()
1227  * Validate that an attached mount in our mount namespace cannot be idmapped.
1228  * (The kernel enforces that the mount's mount namespace and the caller's mount
1262  * Validate that idmapping a mount is rejected if the mount's mount namespace
1263  * and our mount namespace don't match.
1264  * (The kernel enforces that the mount's mount namespace and the caller's mount
1301  * Validate that an attached mount in our mount namespace can be idmapped.
1321 	/* Changing mount properties on a detached mount. */  in TEST_F()
1331  * Validate that a detached mount not in our mount namespace can be idmapped.
1353 	/* Changing mount properties on a detached mount. */  in TEST_F()
1376  * Validate that currently changing the idmapping of an idmapped mount fails.
1407 	/* Change idmapping on a detached mount that is already idmapped. */  in TEST_F()
1436 	ASSERT_EQ(mount("testing", "/mnt/A", "ramfs", MS_NOATIME | MS_NODEV,  in TEST_F()
1441 	ASSERT_EQ(mount("/tmp", "/mnt/A/AA", NULL, MS_BIND | MS_REC, NULL), 0);  in TEST_F()
1639 	 * The origin mount namespace of the anonymous mount namespace  in TEST_F()
1640 	 * of @fd_tree_base doesn't match the caller's mount namespace  in TEST_F()
1683 	 * located in a mount namespace that is owned by an ancestor  in TEST_F()
1685 	 * detached mount must thus fail.  in TEST_F()
1725         * The caller entered a new mount namespace. They will have  in TEST_F()
1726         * CAP_SYS_ADMIN in the owning user namespace of their mount  in TEST_F()
1729         * However, the origin mount namespace of the anonymous mount  in TEST_F()
1730         * namespace of @fd_tree_base doesn't match the caller's mount  in TEST_F()
1876 	/* Attach the mount to the caller's mount namespace. */  in TEST_F()
1889 	/* Not allowed to move an attached mount to a detached mount. */  in TEST_F()
1912 	/* Attach the mount to the caller's mount namespace. */  in TEST_F()
1921 	 * This tests whether dissolve_on_fput() handles a NULL mount  in TEST_F()
1953 	 * Move the source detached mount tree to the target detached  in TEST_F()
1954 	 * mount tree. This will move all the mounts in the source mount  in TEST_F()
1955 	 * tree from the source anonymous mount namespace to the target  in TEST_F()
1956 	 * anonymous mount namespace.  in TEST_F()
1958 	 * The source detached mount tree and the target detached mount  in TEST_F()
1959 	 * tree now both refer to the same anonymous mount namespace.  in TEST_F()
1970 	 * The source detached mount tree @fd_tree1 is now an attached  in TEST_F()
1971 	 * mount, i.e., it has a parent. Specifically, it now has the  in TEST_F()
1972 	 * root mount of the mount tree of @fd_tree2 as its parent.  in TEST_F()
1975 	 * allow attaching the root of an anonymous mount tree, not  in TEST_F()
1981 	 * Closing the source detached mount tree must not unmount and  in TEST_F()
1982 	 * free the shared anonymous mount namespace. The kernel will  in TEST_F()
1983 	 * quickly yell at us because the anonymous mount namespace  in TEST_F()
1989 	 * Attach the mount tree to a non-anonymous mount namespace.  in TEST_F()
1991 	 * semantics and didn't cause the anonymous mount namespace to  in TEST_F()
2010 	 * Copy the following mount tree:  in TEST_F()
2025 	 * that refers to the same detached mount tree as @fd_tree1  in TEST_F()
2033 	 * Copy the following mount tree:  in TEST_F()
2043 	 * This must fail as this would mean adding the same mount tree  in TEST_F()
2044 	 * into the same mount tree.  in TEST_F()
2054 	 * Copy the following mount tree:  in TEST_F()
2069 	 * refers to a subtree of the same detached mount tree as @fd_tree1  in TEST_F()
2078 	 * detached mount tree.  in TEST_F()
2091 	ASSERT_EQ(mount(NULL, "/mnt", NULL, MS_REC | MS_SHARED, NULL), 0);  in TEST_F()
2094 	 * Copy the following mount tree:  in TEST_F()
2113 	 * Copying the mount namespace like done above doesn't alter the  in TEST_F()
2121 	/* Mount a tmpfs filesystem over /mnt/A. */  in TEST_F()
2122 	ASSERT_EQ(mount(NULL, "/mnt/A", "tmpfs", 0, NULL), 0);  in TEST_F()
2131 	 * statx() that was taken from /mnt/A before the mount compared  in TEST_F()
2132 	 * to one after the mount.  in TEST_F()