Copy the required headers files (mount.h, nsfs.h) to the tools include dir and define the statmount/listmount syscall numbers to decouple dependency with headers_install for the common cases.
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| 1 | #ifndef _UAPI_LINUX_MOUNT_H | ||
| 2 | #define _UAPI_LINUX_MOUNT_H | ||
| 3 | |||
| 4 | #include <linux/types.h> | ||
| 5 | |||
| 6 | /* | ||
| 7 | * These are the fs-independent mount-flags: up to 32 flags are supported | ||
| 8 | * | ||
| 9 | * Usage of these is restricted within the kernel to core mount(2) code and | ||
| 10 | * callers of sys_mount() only. Filesystems should be using the SB_* | ||
| 11 | * equivalent instead. | ||
| 12 | */ | ||
| 13 | #define MS_RDONLY 1 /* Mount read-only */ | ||
| 14 | #define MS_NOSUID 2 /* Ignore suid and sgid bits */ | ||
| 15 | #define MS_NODEV 4 /* Disallow access to device special files */ | ||
| 16 | #define MS_NOEXEC 8 /* Disallow program execution */ | ||
| 17 | #define MS_SYNCHRONOUS 16 /* Writes are synced at once */ | ||
| 18 | #define MS_REMOUNT 32 /* Alter flags of a mounted FS */ | ||
| 19 | #define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */ | ||
| 20 | #define MS_DIRSYNC 128 /* Directory modifications are synchronous */ | ||
| 21 | #define MS_NOSYMFOLLOW 256 /* Do not follow symlinks */ | ||
| 22 | #define MS_NOATIME 1024 /* Do not update access times. */ | ||
| 23 | #define MS_NODIRATIME 2048 /* Do not update directory access times */ | ||
| 24 | #define MS_BIND 4096 | ||
| 25 | #define MS_MOVE 8192 | ||
| 26 | #define MS_REC 16384 | ||
| 27 | #define MS_VERBOSE 32768 /* War is peace. Verbosity is silence. | ||
| 28 | MS_VERBOSE is deprecated. */ | ||
| 29 | #define MS_SILENT 32768 | ||
| 30 | #define MS_POSIXACL (1<<16) /* VFS does not apply the umask */ | ||
| 31 | #define MS_UNBINDABLE (1<<17) /* change to unbindable */ | ||
| 32 | #define MS_PRIVATE (1<<18) /* change to private */ | ||
| 33 | #define MS_SLAVE (1<<19) /* change to slave */ | ||
| 34 | #define MS_SHARED (1<<20) /* change to shared */ | ||
| 35 | #define MS_RELATIME (1<<21) /* Update atime relative to mtime/ctime. */ | ||
| 36 | #define MS_KERNMOUNT (1<<22) /* this is a kern_mount call */ | ||
| 37 | #define MS_I_VERSION (1<<23) /* Update inode I_version field */ | ||
| 38 | #define MS_STRICTATIME (1<<24) /* Always perform atime updates */ | ||
| 39 | #define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */ | ||
| 40 | |||
| 41 | /* These sb flags are internal to the kernel */ | ||
| 42 | #define MS_SUBMOUNT (1<<26) | ||
| 43 | #define MS_NOREMOTELOCK (1<<27) | ||
| 44 | #define MS_NOSEC (1<<28) | ||
| 45 | #define MS_BORN (1<<29) | ||
| 46 | #define MS_ACTIVE (1<<30) | ||
| 47 | #define MS_NOUSER (1<<31) | ||
| 48 | |||
| 49 | /* | ||
| 50 | * Superblock flags that can be altered by MS_REMOUNT | ||
| 51 | */ | ||
| 52 | #define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION|\ | ||
| 53 | MS_LAZYTIME) | ||
| 54 | |||
| 55 | /* | ||
| 56 | * Old magic mount flag and mask | ||
| 57 | */ | ||
| 58 | #define MS_MGC_VAL 0xC0ED0000 | ||
| 59 | #define MS_MGC_MSK 0xffff0000 | ||
| 60 | |||
| 61 | /* | ||
| 62 | * open_tree() flags. | ||
| 63 | */ | ||
| 64 | #define OPEN_TREE_CLONE 1 /* Clone the target tree and attach the clone */ | ||
| 65 | #define OPEN_TREE_CLOEXEC O_CLOEXEC /* Close the file on execve() */ | ||
| 66 | |||
| 67 | /* | ||
| 68 | * move_mount() flags. | ||
| 69 | */ | ||
| 70 | #define MOVE_MOUNT_F_SYMLINKS 0x00000001 /* Follow symlinks on from path */ | ||
| 71 | #define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002 /* Follow automounts on from path */ | ||
| 72 | #define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */ | ||
| 73 | #define MOVE_MOUNT_T_SYMLINKS 0x00000010 /* Follow symlinks on to path */ | ||
| 74 | #define MOVE_MOUNT_T_AUTOMOUNTS 0x00000020 /* Follow automounts on to path */ | ||
| 75 | #define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */ | ||
| 76 | #define MOVE_MOUNT_SET_GROUP 0x00000100 /* Set sharing group instead */ | ||
| 77 | #define MOVE_MOUNT_BENEATH 0x00000200 /* Mount beneath top mount */ | ||
| 78 | #define MOVE_MOUNT__MASK 0x00000377 | ||
| 79 | |||
| 80 | /* | ||
| 81 | * fsopen() flags. | ||
| 82 | */ | ||
| 83 | #define FSOPEN_CLOEXEC 0x00000001 | ||
| 84 | |||
| 85 | /* | ||
| 86 | * fspick() flags. | ||
| 87 | */ | ||
| 88 | #define FSPICK_CLOEXEC 0x00000001 | ||
| 89 | #define FSPICK_SYMLINK_NOFOLLOW 0x00000002 | ||
| 90 | #define FSPICK_NO_AUTOMOUNT 0x00000004 | ||
| 91 | #define FSPICK_EMPTY_PATH 0x00000008 | ||
| 92 | |||
| 93 | /* | ||
| 94 | * The type of fsconfig() call made. | ||
| 95 | */ | ||
| 96 | enum fsconfig_command { | ||
| 97 | FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */ | ||
| 98 | FSCONFIG_SET_STRING = 1, /* Set parameter, supplying a string value */ | ||
| 99 | FSCONFIG_SET_BINARY = 2, /* Set parameter, supplying a binary blob value */ | ||
| 100 | FSCONFIG_SET_PATH = 3, /* Set parameter, supplying an object by path */ | ||
| 101 | FSCONFIG_SET_PATH_EMPTY = 4, /* Set parameter, supplying an object by (empty) path */ | ||
| 102 | FSCONFIG_SET_FD = 5, /* Set parameter, supplying an object by fd */ | ||
| 103 | FSCONFIG_CMD_CREATE = 6, /* Create new or reuse existing superblock */ | ||
| 104 | FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */ | ||
| 105 | FSCONFIG_CMD_CREATE_EXCL = 8, /* Create new superblock, fail if reusing existing superblock */ | ||
| 106 | }; | ||
| 107 | |||
| 108 | /* | ||
| 109 | * fsmount() flags. | ||
| 110 | */ | ||
| 111 | #define FSMOUNT_CLOEXEC 0x00000001 | ||
| 112 | |||
| 113 | /* | ||
| 114 | * Mount attributes. | ||
| 115 | */ | ||
| 116 | #define MOUNT_ATTR_RDONLY 0x00000001 /* Mount read-only */ | ||
| 117 | #define MOUNT_ATTR_NOSUID 0x00000002 /* Ignore suid and sgid bits */ | ||
| 118 | #define MOUNT_ATTR_NODEV 0x00000004 /* Disallow access to device special files */ | ||
| 119 | #define MOUNT_ATTR_NOEXEC 0x00000008 /* Disallow program execution */ | ||
| 120 | #define MOUNT_ATTR__ATIME 0x00000070 /* Setting on how atime should be updated */ | ||
| 121 | #define MOUNT_ATTR_RELATIME 0x00000000 /* - Update atime relative to mtime/ctime. */ | ||
| 122 | #define MOUNT_ATTR_NOATIME 0x00000010 /* - Do not update access times. */ | ||
| 123 | #define MOUNT_ATTR_STRICTATIME 0x00000020 /* - Always perform atime updates */ | ||
| 124 | #define MOUNT_ATTR_NODIRATIME 0x00000080 /* Do not update directory access times */ | ||
| 125 | #define MOUNT_ATTR_IDMAP 0x00100000 /* Idmap mount to @userns_fd in struct mount_attr. */ | ||
| 126 | #define MOUNT_ATTR_NOSYMFOLLOW 0x00200000 /* Do not follow symlinks */ | ||
| 127 | |||
| 128 | /* | ||
| 129 | * mount_setattr() | ||
| 130 | */ | ||
| 131 | struct mount_attr { | ||
| 132 | __u64 attr_set; | ||
| 133 | __u64 attr_clr; | ||
| 134 | __u64 propagation; | ||
| 135 | __u64 userns_fd; | ||
| 136 | }; | ||
| 137 | |||
| 138 | /* List of all mount_attr versions. */ | ||
| 139 | #define MOUNT_ATTR_SIZE_VER0 32 /* sizeof first published struct */ | ||
| 140 | |||
| 141 | |||
| 142 | /* | ||
| 143 | * Structure for getting mount/superblock/filesystem info with statmount(2). | ||
| 144 | * | ||
| 145 | * The interface is similar to statx(2): individual fields or groups can be | ||
| 146 | * selected with the @mask argument of statmount(). Kernel will set the @mask | ||
| 147 | * field according to the supported fields. | ||
| 148 | * | ||
| 149 | * If string fields are selected, then the caller needs to pass a buffer that | ||
| 150 | * has space after the fixed part of the structure. Nul terminated strings are | ||
| 151 | * copied there and offsets relative to @str are stored in the relevant fields. | ||
| 152 | * If the buffer is too small, then EOVERFLOW is returned. The actually used | ||
| 153 | * size is returned in @size. | ||
| 154 | */ | ||
| 155 | struct statmount { | ||
| 156 | __u32 size; /* Total size, including strings */ | ||
| 157 | __u32 mnt_opts; /* [str] Options (comma separated, escaped) */ | ||
| 158 | __u64 mask; /* What results were written */ | ||
| 159 | __u32 sb_dev_major; /* Device ID */ | ||
| 160 | __u32 sb_dev_minor; | ||
| 161 | __u64 sb_magic; /* ..._SUPER_MAGIC */ | ||
| 162 | __u32 sb_flags; /* SB_{RDONLY,SYNCHRONOUS,DIRSYNC,LAZYTIME} */ | ||
| 163 | __u32 fs_type; /* [str] Filesystem type */ | ||
| 164 | __u64 mnt_id; /* Unique ID of mount */ | ||
| 165 | __u64 mnt_parent_id; /* Unique ID of parent (for root == mnt_id) */ | ||
| 166 | __u32 mnt_id_old; /* Reused IDs used in proc/.../mountinfo */ | ||
| 167 | __u32 mnt_parent_id_old; | ||
| 168 | __u64 mnt_attr; /* MOUNT_ATTR_... */ | ||
| 169 | __u64 mnt_propagation; /* MS_{SHARED,SLAVE,PRIVATE,UNBINDABLE} */ | ||
| 170 | __u64 mnt_peer_group; /* ID of shared peer group */ | ||
| 171 | __u64 mnt_master; /* Mount receives propagation from this ID */ | ||
| 172 | __u64 propagate_from; /* Propagation from in current namespace */ | ||
| 173 | __u32 mnt_root; /* [str] Root of mount relative to root of fs */ | ||
| 174 | __u32 mnt_point; /* [str] Mountpoint relative to current root */ | ||
| 175 | __u64 mnt_ns_id; /* ID of the mount namespace */ | ||
| 176 | __u32 fs_subtype; /* [str] Subtype of fs_type (if any) */ | ||
| 177 | __u32 sb_source; /* [str] Source string of the mount */ | ||
| 178 | __u32 opt_num; /* Number of fs options */ | ||
| 179 | __u32 opt_array; /* [str] Array of nul terminated fs options */ | ||
| 180 | __u32 opt_sec_num; /* Number of security options */ | ||
| 181 | __u32 opt_sec_array; /* [str] Array of nul terminated security options */ | ||
| 182 | __u64 supported_mask; /* Mask flags that this kernel supports */ | ||
| 183 | __u32 mnt_uidmap_num; /* Number of uid mappings */ | ||
| 184 | __u32 mnt_uidmap; /* [str] Array of uid mappings (as seen from callers namespace) */ | ||
| 185 | __u32 mnt_gidmap_num; /* Number of gid mappings */ | ||
| 186 | __u32 mnt_gidmap; /* [str] Array of gid mappings (as seen from callers namespace) */ | ||
| 187 | __u64 __spare2[43]; | ||
| 188 | char str[]; /* Variable size part containing strings */ | ||
| 189 | }; | ||
| 190 | |||
| 191 | /* | ||
| 192 | * Structure for passing mount ID and miscellaneous parameters to statmount(2) | ||
| 193 | * and listmount(2). | ||
| 194 | * | ||
| 195 | * For statmount(2) @param represents the request mask. | ||
| 196 | * For listmount(2) @param represents the last listed mount id (or zero). | ||
| 197 | */ | ||
| 198 | struct mnt_id_req { | ||
| 199 | __u32 size; | ||
| 200 | __u32 spare; | ||
| 201 | __u64 mnt_id; | ||
| 202 | __u64 param; | ||
| 203 | __u64 mnt_ns_id; | ||
| 204 | }; | ||
| 205 | |||
| 206 | /* List of all mnt_id_req versions. */ | ||
| 207 | #define MNT_ID_REQ_SIZE_VER0 24 /* sizeof first published struct */ | ||
| 208 | #define MNT_ID_REQ_SIZE_VER1 32 /* sizeof second published struct */ | ||
| 209 | |||
| 210 | /* | ||
| 211 | * @mask bits for statmount(2) | ||
| 212 | */ | ||
| 213 | #define STATMOUNT_SB_BASIC 0x00000001U /* Want/got sb_... */ | ||
| 214 | #define STATMOUNT_MNT_BASIC 0x00000002U /* Want/got mnt_... */ | ||
| 215 | #define STATMOUNT_PROPAGATE_FROM 0x00000004U /* Want/got propagate_from */ | ||
| 216 | #define STATMOUNT_MNT_ROOT 0x00000008U /* Want/got mnt_root */ | ||
| 217 | #define STATMOUNT_MNT_POINT 0x00000010U /* Want/got mnt_point */ | ||
| 218 | #define STATMOUNT_FS_TYPE 0x00000020U /* Want/got fs_type */ | ||
| 219 | #define STATMOUNT_MNT_NS_ID 0x00000040U /* Want/got mnt_ns_id */ | ||
| 220 | #define STATMOUNT_MNT_OPTS 0x00000080U /* Want/got mnt_opts */ | ||
| 221 | #define STATMOUNT_FS_SUBTYPE 0x00000100U /* Want/got fs_subtype */ | ||
| 222 | #define STATMOUNT_SB_SOURCE 0x00000200U /* Want/got sb_source */ | ||
| 223 | #define STATMOUNT_OPT_ARRAY 0x00000400U /* Want/got opt_... */ | ||
| 224 | #define STATMOUNT_OPT_SEC_ARRAY 0x00000800U /* Want/got opt_sec... */ | ||
| 225 | #define STATMOUNT_SUPPORTED_MASK 0x00001000U /* Want/got supported mask flags */ | ||
| 226 | #define STATMOUNT_MNT_UIDMAP 0x00002000U /* Want/got uidmap... */ | ||
| 227 | #define STATMOUNT_MNT_GIDMAP 0x00004000U /* Want/got gidmap... */ | ||
| 228 | |||
| 229 | /* | ||
| 230 | * Special @mnt_id values that can be passed to listmount | ||
| 231 | */ | ||
| 232 | #define LSMT_ROOT 0xffffffffffffffff /* root mount */ | ||
| 233 | #define LISTMOUNT_REVERSE (1 << 0) /* List later mounts first */ | ||
| 234 | |||
| 235 | #endif /* _UAPI_LINUX_MOUNT_H */ | ||
| @@ -0,0 +1,45 @@ | |||
| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ | ||
| 2 | #ifndef __LINUX_NSFS_H | ||
| 3 | #define __LINUX_NSFS_H | ||
| 4 | |||
| 5 | #include <linux/ioctl.h> | ||
| 6 | #include <linux/types.h> | ||
| 7 | |||
| 8 | #define NSIO 0xb7 | ||
| 9 | |||
| 10 | /* Returns a file descriptor that refers to an owning user namespace */ | ||
| 11 | #define NS_GET_USERNS _IO(NSIO, 0x1) | ||
| 12 | /* Returns a file descriptor that refers to a parent namespace */ | ||
| 13 | #define NS_GET_PARENT _IO(NSIO, 0x2) | ||
| 14 | /* Returns the type of namespace (CLONE_NEW* value) referred to by | ||
| 15 | file descriptor */ | ||
| 16 | #define NS_GET_NSTYPE _IO(NSIO, 0x3) | ||
| 17 | /* Get owner UID (in the caller's user namespace) for a user namespace */ | ||
| 18 | #define NS_GET_OWNER_UID _IO(NSIO, 0x4) | ||
| 19 | /* Get the id for a mount namespace */ | ||
| 20 | #define NS_GET_MNTNS_ID _IOR(NSIO, 0x5, __u64) | ||
| 21 | /* Translate pid from target pid namespace into the caller's pid namespace. */ | ||
| 22 | #define NS_GET_PID_FROM_PIDNS _IOR(NSIO, 0x6, int) | ||
| 23 | /* Return thread-group leader id of pid in the callers pid namespace. */ | ||
| 24 | #define NS_GET_TGID_FROM_PIDNS _IOR(NSIO, 0x7, int) | ||
| 25 | /* Translate pid from caller's pid namespace into a target pid namespace. */ | ||
| 26 | #define NS_GET_PID_IN_PIDNS _IOR(NSIO, 0x8, int) | ||
| 27 | /* Return thread-group leader id of pid in the target pid namespace. */ | ||
| 28 | #define NS_GET_TGID_IN_PIDNS _IOR(NSIO, 0x9, int) | ||
| 29 | |||
| 30 | struct mnt_ns_info { | ||
| 31 | __u32 size; | ||
| 32 | __u32 nr_mounts; | ||
| 33 | __u64 mnt_ns_id; | ||
| 34 | }; | ||
| 35 | |||
| 36 | #define MNT_NS_INFO_SIZE_VER0 16 /* size of first published struct */ | ||
| 37 | |||
| 38 | /* Get information about namespace. */ | ||
| 39 | #define NS_MNT_GET_INFO _IOR(NSIO, 10, struct mnt_ns_info) | ||
| 40 | /* Get next namespace. */ | ||
| 41 | #define NS_MNT_GET_NEXT _IOR(NSIO, 11, struct mnt_ns_info) | ||
| 42 | /* Get previous namespace. */ | ||
| 43 | #define NS_MNT_GET_PREV _IOR(NSIO, 12, struct mnt_ns_info) | ||
| 44 | |||
| 45 | #endif /* __LINUX_NSFS_H */ | ||