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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| @@ -0,0 +1,235 @@ | ||
| 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 */ | |