diff options
Diffstat (limited to 'include/mount-api-utils.h')
| -rw-r--r-- | include/mount-api-utils.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/include/mount-api-utils.h b/include/mount-api-utils.h new file mode 100644 index 0000000..8ae546b --- /dev/null +++ b/include/mount-api-utils.h @@ -0,0 +1,208 @@ +/* + * No copyright is claimed. This code is in the public domain; do with + * it what you wish. + */ +#ifndef UTIL_LINUX_MOUNT_API_UTILS +#define UTIL_LINUX_MOUNT_API_UTILS + +#if defined(HAVE_MOUNTFD_API) && defined(HAVE_LINUX_MOUNT_H) + +#include <sys/syscall.h> +#include <linux/mount.h> + +/* Accepted by both open_tree() and mount_setattr(). */ +#ifndef AT_RECURSIVE +# define AT_RECURSIVE 0x8000 +#endif + +#ifndef OPEN_TREE_CLONE +# define OPEN_TREE_CLONE 1 +#endif + +#ifndef OPEN_TREE_CLOEXEC +# define OPEN_TREE_CLOEXEC O_CLOEXEC +#endif + +#if !defined(HAVE_OPEN_TREE) && defined(SYS_open_tree) +static inline int open_tree(int dfd, const char *filename, unsigned int flags) +{ + return syscall(SYS_open_tree, dfd, filename, flags); +} +#endif + +#ifndef MOVE_MOUNT_F_SYMLINKS +# define MOVE_MOUNT_F_SYMLINKS 0x00000001 /* Follow symlinks on from path */ +#endif + +#ifndef MOVE_MOUNT_F_AUTOMOUNTS +# define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002 /* Follow automounts on from path */ +#endif + +#ifndef MOVE_MOUNT_F_EMPTY_PATH +# define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */ +#endif + +#ifndef MOVE_MOUNT_T_SYMLINKS +# define MOVE_MOUNT_T_SYMLINKS 0x00000010 /* Follow symlinks on to path */ +#endif + +#ifndef MOVE_MOUNT_T_AUTOMOUNTS +# define MOVE_MOUNT_T_AUTOMOUNTS 0x00000020 /* Follow automounts on to path */ +#endif + +#ifndef MOVE_MOUNT_T_EMPTY_PATH +# define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */ +#endif + +#ifndef MOVE_MOUNT_SET_GROUP +# define MOVE_MOUNT_SET_GROUP 0x00000100 /* Set sharing group instead */ +#endif + +#ifndef MOVE_MOUNT__MASK +# define MOVE_MOUNT__MASK 0x00000077 +#endif + +#if !defined(HAVE_MOVE_MOUNT) && defined(SYS_move_mount) +static inline int move_mount(int from_dfd, const char *from_pathname, int to_dfd, + const char *to_pathname, unsigned int flags) +{ + return syscall(SYS_move_mount, from_dfd, from_pathname, to_dfd, + to_pathname, flags); +} +#endif + +#ifndef MOUNT_ATTR_RDONLY +# define MOUNT_ATTR_RDONLY 0x00000001 +#endif + +#ifndef MOUNT_ATTR_NOSUID +# define MOUNT_ATTR_NOSUID 0x00000002 +#endif + +#ifndef MOUNT_ATTR_NODEV +# define MOUNT_ATTR_NODEV 0x00000004 +#endif + +#ifndef MOUNT_ATTR_NOEXEC +# define MOUNT_ATTR_NOEXEC 0x00000008 +#endif + +#ifndef MOUNT_ATTR__ATIME +# define MOUNT_ATTR__ATIME 0x00000070 +#endif + +#ifndef MOUNT_ATTR_RELATIME +# define MOUNT_ATTR_RELATIME 0x00000000 +#endif + +#ifndef MOUNT_ATTR_NOATIME +# define MOUNT_ATTR_NOATIME 0x00000010 +#endif + +#ifndef MOUNT_ATTR_STRICTATIME +# define MOUNT_ATTR_STRICTATIME 0x00000020 +#endif + +#ifndef MOUNT_ATTR_NODIRATIME +# define MOUNT_ATTR_NODIRATIME 0x00000080 +#endif + +#ifndef MOUNT_ATTR_IDMAP +# define MOUNT_ATTR_IDMAP 0x00100000 +#endif + +#ifndef MOUNT_ATTR_NOSYMFOLLOW +# define MOUNT_ATTR_NOSYMFOLLOW 0x00200000 +#endif + +#ifndef HAVE_STRUCT_MOUNT_ATTR +# ifndef MOUNT_ATTR_SIZE_VER0 /* For case mount.h comes from a place invisible for autotools/meson */ +# include <inttypes.h> +struct mount_attr { + uint64_t attr_set; + uint64_t attr_clr; + uint64_t propagation; + uint64_t userns_fd; +}; +# endif +#endif + +#if !defined(HAVE_MOUNT_SETATTR) && defined(SYS_mount_setattr) +static inline int mount_setattr(int dfd, const char *path, unsigned int flags, + struct mount_attr *attr, size_t size) +{ + return syscall(SYS_mount_setattr, dfd, path, flags, attr, size); +} +#endif + +#ifndef HAVE_ENUM_FSCONFIG_COMMAND +# ifndef FSOPEN_CLOEXEC /* For case mount.h comes from a place invisible for autotools/meson */ +enum fsconfig_command { + FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */ + FSCONFIG_SET_STRING = 1, /* Set parameter, supplying a string value */ + FSCONFIG_SET_BINARY = 2, /* Set parameter, supplying a binary blob value */ + FSCONFIG_SET_PATH = 3, /* Set parameter, supplying an object by path */ + FSCONFIG_SET_PATH_EMPTY = 4, /* Set parameter, supplying an object by (empty) path */ + FSCONFIG_SET_FD = 5, /* Set parameter, supplying an object by fd */ + FSCONFIG_CMD_CREATE = 6, /* Invoke superblock creation */ + FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */ +}; +# endif +#endif + +#if !defined(HAVE_FSCONFIG) && defined(SYS_fsconfig) +static inline int fsconfig(int fd, unsigned int cmd, const char *key, + const void *value, int aux) +{ + return syscall(SYS_fsconfig, fd, cmd, key, value, aux); +} +#endif + +#ifndef FSOPEN_CLOEXEC +# define FSOPEN_CLOEXEC 0x00000001 +#endif + +#if !defined(HAVE_FSOPEN) && defined(SYS_fsopen) +static inline int fsopen(const char *fsname, unsigned int flags) +{ + return syscall(SYS_fsopen, fsname, flags); +} +#endif + +#ifndef FSMOUNT_CLOEXEC +# define FSMOUNT_CLOEXEC 0x00000001 +#endif + +#if !defined(HAVE_FSMOUNT) && defined(SYS_fsmount) +static inline int fsmount(int fd, unsigned int flags, unsigned int mount_attrs) +{ + return syscall(SYS_fsmount, fd, flags, mount_attrs); +} +#endif + +#ifndef FSPICK_CLOEXEC +# define FSPICK_CLOEXEC 0x00000001 +#endif + +#ifndef FSPICK_SYMLINK_NOFOLLOW +# define FSPICK_SYMLINK_NOFOLLOW 0x00000002 +#endif + +#ifndef FSPICK_NO_AUTOMOUNT +# define FSPICK_NO_AUTOMOUNT 0x00000004 +#endif + +#ifdef FSPICK_EMPTY_PATH +# define FSPICK_EMPTY_PATH 0x00000008 +#endif + +#if !defined(HAVE_FSPICK) && defined(SYS_fspick) +static inline int fspick(int dfd, const char *pathname, unsigned int flags) +{ + return syscall(SYS_fspick, dfd, pathname, flags); +} +#endif + +#endif /* HAVE_MOUNTFD_API && HAVE_LINUX_MOUNT_H */ +#endif /* UTIL_LINUX_MOUNT_API_UTILS */ + |