diff options
Diffstat (limited to 'vendor/rustix/src/backend/libc/mount')
| -rw-r--r-- | vendor/rustix/src/backend/libc/mount/mod.rs | 2 | ||||
| -rw-r--r-- | vendor/rustix/src/backend/libc/mount/syscalls.rs | 272 | ||||
| -rw-r--r-- | vendor/rustix/src/backend/libc/mount/types.rs | 340 |
3 files changed, 614 insertions, 0 deletions
diff --git a/vendor/rustix/src/backend/libc/mount/mod.rs b/vendor/rustix/src/backend/libc/mount/mod.rs new file mode 100644 index 0000000..1e0181a --- /dev/null +++ b/vendor/rustix/src/backend/libc/mount/mod.rs @@ -0,0 +1,2 @@ +pub(crate) mod syscalls; +pub(crate) mod types; diff --git a/vendor/rustix/src/backend/libc/mount/syscalls.rs b/vendor/rustix/src/backend/libc/mount/syscalls.rs new file mode 100644 index 0000000..7245114 --- /dev/null +++ b/vendor/rustix/src/backend/libc/mount/syscalls.rs @@ -0,0 +1,272 @@ +use crate::backend::c; +use crate::backend::conv::ret; +#[cfg(feature = "mount")] +use crate::backend::conv::{borrowed_fd, c_str, ret_owned_fd}; +#[cfg(feature = "mount")] +use crate::fd::{BorrowedFd, OwnedFd}; +use crate::ffi::CStr; +use crate::io; +use core::ptr::null; + +#[cfg(linux_kernel)] +pub(crate) fn mount( + source: Option<&CStr>, + target: &CStr, + file_system_type: Option<&CStr>, + flags: super::types::MountFlagsArg, + data: Option<&CStr>, +) -> io::Result<()> { + unsafe { + ret(c::mount( + source.map_or_else(null, CStr::as_ptr), + target.as_ptr(), + file_system_type.map_or_else(null, CStr::as_ptr), + flags.0, + data.map_or_else(null, CStr::as_ptr).cast(), + )) + } +} + +#[cfg(linux_kernel)] +pub(crate) fn unmount(target: &CStr, flags: super::types::UnmountFlags) -> io::Result<()> { + unsafe { ret(c::umount2(target.as_ptr(), bitflags_bits!(flags))) } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsopen(fs_name: &CStr, flags: super::types::FsOpenFlags) -> io::Result<OwnedFd> { + syscall! { + fn fsopen( + fs_name: *const c::c_char, + flags: c::c_uint + ) via SYS_fsopen -> c::c_int + } + unsafe { ret_owned_fd(fsopen(c_str(fs_name), flags.bits())) } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsmount( + fs_fd: BorrowedFd<'_>, + flags: super::types::FsMountFlags, + attr_flags: super::types::MountAttrFlags, +) -> io::Result<OwnedFd> { + syscall! { + fn fsmount( + fs_fd: c::c_int, + flags: c::c_uint, + attr_flags: c::c_uint + ) via SYS_fsmount -> c::c_int + } + unsafe { ret_owned_fd(fsmount(borrowed_fd(fs_fd), flags.bits(), attr_flags.bits())) } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn move_mount( + from_dfd: BorrowedFd<'_>, + from_pathname: &CStr, + to_dfd: BorrowedFd<'_>, + to_pathname: &CStr, + flags: super::types::MoveMountFlags, +) -> io::Result<()> { + syscall! { + fn move_mount( + from_dfd: c::c_int, + from_pathname: *const c::c_char, + to_dfd: c::c_int, + to_pathname: *const c::c_char, + flags: c::c_uint + ) via SYS_move_mount -> c::c_int + } + unsafe { + ret(move_mount( + borrowed_fd(from_dfd), + c_str(from_pathname), + borrowed_fd(to_dfd), + c_str(to_pathname), + flags.bits(), + )) + } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn open_tree( + dfd: BorrowedFd<'_>, + filename: &CStr, + flags: super::types::OpenTreeFlags, +) -> io::Result<OwnedFd> { + syscall! { + fn open_tree( + dfd: c::c_int, + filename: *const c::c_char, + flags: c::c_uint + ) via SYS_open_tree -> c::c_int + } + + unsafe { ret_owned_fd(open_tree(borrowed_fd(dfd), c_str(filename), flags.bits())) } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fspick( + dfd: BorrowedFd<'_>, + path: &CStr, + flags: super::types::FsPickFlags, +) -> io::Result<OwnedFd> { + syscall! { + fn fspick( + dfd: c::c_int, + path: *const c::c_char, + flags: c::c_uint + ) via SYS_fspick -> c::c_int + } + + unsafe { ret_owned_fd(fspick(borrowed_fd(dfd), c_str(path), flags.bits())) } +} + +#[cfg(feature = "mount")] +#[cfg(linux_kernel)] +syscall! { + fn fsconfig( + fs_fd: c::c_int, + cmd: c::c_uint, + key: *const c::c_char, + val: *const c::c_char, + aux: c::c_int + ) via SYS_fsconfig -> c::c_int +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsconfig_set_flag(fs_fd: BorrowedFd<'_>, key: &CStr) -> io::Result<()> { + unsafe { + ret(fsconfig( + borrowed_fd(fs_fd), + super::types::FsConfigCmd::SetFlag as _, + c_str(key), + null(), + 0, + )) + } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsconfig_set_string( + fs_fd: BorrowedFd<'_>, + key: &CStr, + value: &CStr, +) -> io::Result<()> { + unsafe { + ret(fsconfig( + borrowed_fd(fs_fd), + super::types::FsConfigCmd::SetString as _, + c_str(key), + c_str(value), + 0, + )) + } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsconfig_set_binary( + fs_fd: BorrowedFd<'_>, + key: &CStr, + value: &[u8], +) -> io::Result<()> { + unsafe { + ret(fsconfig( + borrowed_fd(fs_fd), + super::types::FsConfigCmd::SetBinary as _, + c_str(key), + value.as_ptr().cast(), + value.len().try_into().map_err(|_| io::Errno::OVERFLOW)?, + )) + } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsconfig_set_fd( + fs_fd: BorrowedFd<'_>, + key: &CStr, + fd: BorrowedFd<'_>, +) -> io::Result<()> { + unsafe { + ret(fsconfig( + borrowed_fd(fs_fd), + super::types::FsConfigCmd::SetFd as _, + c_str(key), + null(), + borrowed_fd(fd), + )) + } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsconfig_set_path( + fs_fd: BorrowedFd<'_>, + key: &CStr, + path: &CStr, + fd: BorrowedFd<'_>, +) -> io::Result<()> { + unsafe { + ret(fsconfig( + borrowed_fd(fs_fd), + super::types::FsConfigCmd::SetPath as _, + c_str(key), + c_str(path), + borrowed_fd(fd), + )) + } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsconfig_set_path_empty( + fs_fd: BorrowedFd<'_>, + key: &CStr, + fd: BorrowedFd<'_>, +) -> io::Result<()> { + unsafe { + ret(fsconfig( + borrowed_fd(fs_fd), + super::types::FsConfigCmd::SetPathEmpty as _, + c_str(key), + c_str(cstr!("")), + borrowed_fd(fd), + )) + } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsconfig_create(fs_fd: BorrowedFd<'_>) -> io::Result<()> { + unsafe { + ret(fsconfig( + borrowed_fd(fs_fd), + super::types::FsConfigCmd::Create as _, + null(), + null(), + 0, + )) + } +} + +#[cfg(linux_kernel)] +#[cfg(feature = "mount")] +pub(crate) fn fsconfig_reconfigure(fs_fd: BorrowedFd<'_>) -> io::Result<()> { + unsafe { + ret(fsconfig( + borrowed_fd(fs_fd), + super::types::FsConfigCmd::Reconfigure as _, + null(), + null(), + 0, + )) + } +} diff --git a/vendor/rustix/src/backend/libc/mount/types.rs b/vendor/rustix/src/backend/libc/mount/types.rs new file mode 100644 index 0000000..1023686 --- /dev/null +++ b/vendor/rustix/src/backend/libc/mount/types.rs @@ -0,0 +1,340 @@ +use crate::backend::c; +use bitflags::bitflags; + +#[cfg(linux_kernel)] +bitflags! { + /// `MS_*` constants for use with [`mount`]. + /// + /// [`mount`]: crate::mount::mount + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub struct MountFlags: c::c_ulong { + /// `MS_BIND` + const BIND = c::MS_BIND; + + /// `MS_DIRSYNC` + const DIRSYNC = c::MS_DIRSYNC; + + /// `MS_LAZYTIME` + const LAZYTIME = c::MS_LAZYTIME; + + /// `MS_MANDLOCK` + #[doc(alias = "MANDLOCK")] + const PERMIT_MANDATORY_FILE_LOCKING = c::MS_MANDLOCK; + + /// `MS_NOATIME` + const NOATIME = c::MS_NOATIME; + + /// `MS_NODEV` + const NODEV = c::MS_NODEV; + + /// `MS_NODIRATIME` + const NODIRATIME = c::MS_NODIRATIME; + + /// `MS_NOEXEC` + const NOEXEC = c::MS_NOEXEC; + + /// `MS_NOSUID` + const NOSUID = c::MS_NOSUID; + + /// `MS_RDONLY` + const RDONLY = c::MS_RDONLY; + + /// `MS_REC` + const REC = c::MS_REC; + + /// `MS_RELATIME` + const RELATIME = c::MS_RELATIME; + + /// `MS_SILENT` + const SILENT = c::MS_SILENT; + + /// `MS_STRICTATIME` + const STRICTATIME = c::MS_STRICTATIME; + + /// `MS_SYNCHRONOUS` + const SYNCHRONOUS = c::MS_SYNCHRONOUS; + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +#[cfg(linux_kernel)] +bitflags! { + /// `MNT_*` constants for use with [`unmount`]. + /// + /// [`unmount`]: crate::mount::unmount + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub struct UnmountFlags: u32 { + /// `MNT_FORCE` + const FORCE = bitcast!(c::MNT_FORCE); + /// `MNT_DETACH` + const DETACH = bitcast!(c::MNT_DETACH); + /// `MNT_EXPIRE` + const EXPIRE = bitcast!(c::MNT_EXPIRE); + /// `UMOUNT_NOFOLLOW` + const NOFOLLOW = bitcast!(c::UMOUNT_NOFOLLOW); + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +#[cfg(feature = "mount")] +#[cfg(linux_kernel)] +bitflags! { + /// `FSOPEN_*` constants for use with [`fsopen`]. + /// + /// [`fsopen`]: crate::mount::fsopen + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub struct FsOpenFlags: c::c_uint { + /// `FSOPEN_CLOEXEC` + const FSOPEN_CLOEXEC = 0x0000_0001; + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +#[cfg(feature = "mount")] +#[cfg(linux_kernel)] +bitflags! { + /// `FSMOUNT_*` constants for use with [`fsmount`]. + /// + /// [`fsmount`]: crate::mount::fsmount + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub struct FsMountFlags: c::c_uint { + /// `FSMOUNT_CLOEXEC` + const FSMOUNT_CLOEXEC = 0x0000_0001; + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +/// `FSCONFIG_*` constants for use with the `fsconfig` syscall. +#[cfg(feature = "mount")] +#[cfg(linux_kernel)] +#[derive(Debug, Copy, Clone, Eq, PartialEq)] +#[repr(u32)] +pub(crate) enum FsConfigCmd { + /// `FSCONFIG_SET_FLAG` + SetFlag = 0, + + /// `FSCONFIG_SET_STRING` + SetString = 1, + + /// `FSCONFIG_SET_BINARY` + SetBinary = 2, + + /// `FSCONFIG_SET_PATH` + SetPath = 3, + + /// `FSCONFIG_SET_PATH_EMPTY` + SetPathEmpty = 4, + + /// `FSCONFIG_SET_FD` + SetFd = 5, + + /// `FSCONFIG_CMD_CREATE` + Create = 6, + + /// `FSCONFIG_CMD_RECONFIGURE` + Reconfigure = 7, +} + +#[cfg(feature = "mount")] +#[cfg(linux_kernel)] +bitflags! { + /// `MOUNT_ATTR_*` constants for use with [`fsmount`]. + /// + /// [`fsmount`]: crate::mount::fsmount + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub struct MountAttrFlags: c::c_uint { + /// `MOUNT_ATTR_RDONLY` + const MOUNT_ATTR_RDONLY = 0x0000_0001; + + /// `MOUNT_ATTR_NOSUID` + const MOUNT_ATTR_NOSUID = 0x0000_0002; + + /// `MOUNT_ATTR_NODEV` + const MOUNT_ATTR_NODEV = 0x0000_0004; + + /// `MOUNT_ATTR_NOEXEC` + const MOUNT_ATTR_NOEXEC = 0x0000_0008; + + /// `MOUNT_ATTR__ATIME` + const MOUNT_ATTR__ATIME = 0x0000_0070; + + /// `MOUNT_ATTR_RELATIME` + const MOUNT_ATTR_RELATIME = 0x0000_0000; + + /// `MOUNT_ATTR_NOATIME` + const MOUNT_ATTR_NOATIME = 0x0000_0010; + + /// `MOUNT_ATTR_STRICTATIME` + const MOUNT_ATTR_STRICTATIME = 0x0000_0020; + + /// `MOUNT_ATTR_NODIRATIME` + const MOUNT_ATTR_NODIRATIME = 0x0000_0080; + + /// `MOUNT_ATTR_NOUSER` + const MOUNT_ATTR_IDMAP = 0x0010_0000; + + /// `MOUNT_ATTR__ATIME_FLAGS` + const MOUNT_ATTR_NOSYMFOLLOW = 0x0020_0000; + + /// `MOUNT_ATTR__ATIME_FLAGS` + const MOUNT_ATTR_SIZE_VER0 = 32; + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +#[cfg(feature = "mount")] +#[cfg(linux_kernel)] +bitflags! { + /// `MOVE_MOUNT_*` constants for use with [`move_mount`]. + /// + /// [`move_mount`]: crate::mount::move_mount + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub struct MoveMountFlags: c::c_uint { + /// `MOVE_MOUNT_F_EMPTY_PATH` + const MOVE_MOUNT_F_SYMLINKS = 0x0000_0001; + + /// `MOVE_MOUNT_F_AUTOMOUNTS` + const MOVE_MOUNT_F_AUTOMOUNTS = 0x0000_0002; + + /// `MOVE_MOUNT_F_EMPTY_PATH` + const MOVE_MOUNT_F_EMPTY_PATH = 0x0000_0004; + + /// `MOVE_MOUNT_T_SYMLINKS` + const MOVE_MOUNT_T_SYMLINKS = 0x0000_0010; + + /// `MOVE_MOUNT_T_AUTOMOUNTS` + const MOVE_MOUNT_T_AUTOMOUNTS = 0x0000_0020; + + /// `MOVE_MOUNT_T_EMPTY_PATH` + const MOVE_MOUNT_T_EMPTY_PATH = 0x0000_0040; + + /// `MOVE_MOUNT__MASK` + const MOVE_MOUNT_SET_GROUP = 0x0000_0100; + + // TODO: add when Linux 6.5 is released + // /// `MOVE_MOUNT_BENEATH` + // const MOVE_MOUNT_BENEATH = 0x0000_0200; + + /// `MOVE_MOUNT__MASK` + const MOVE_MOUNT__MASK = 0x0000_0377; + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +#[cfg(feature = "mount")] +#[cfg(linux_kernel)] +bitflags! { + /// `OPENTREE_*` constants for use with [`open_tree`]. + /// + /// [`open_tree`]: crate::mount::open_tree + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub struct OpenTreeFlags: c::c_uint { + /// `OPENTREE_CLONE` + const OPEN_TREE_CLONE = 1; + + /// `OPENTREE_CLOEXEC` + const OPEN_TREE_CLOEXEC = c::O_CLOEXEC as c::c_uint; + + /// `AT_EMPTY_PATH` + const AT_EMPTY_PATH = c::AT_EMPTY_PATH as c::c_uint; + + /// `AT_NO_AUTOMOUNT` + const AT_NO_AUTOMOUNT = c::AT_NO_AUTOMOUNT as c::c_uint; + + /// `AT_RECURSIVE` + const AT_RECURSIVE = c::AT_RECURSIVE as c::c_uint; + + /// `AT_SYMLINK_NOFOLLOW` + const AT_SYMLINK_NOFOLLOW = c::AT_SYMLINK_NOFOLLOW as c::c_uint; + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +#[cfg(feature = "mount")] +#[cfg(linux_kernel)] +bitflags! { + /// `FSPICK_*` constants for use with [`fspick`]. + /// + /// [`fspick`]: crate::mount::fspick + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub struct FsPickFlags: c::c_uint { + /// `FSPICK_CLOEXEC` + const FSPICK_CLOEXEC = 0x0000_0001; + + /// `FSPICK_SYMLINK_NOFOLLOW` + const FSPICK_SYMLINK_NOFOLLOW = 0x0000_0002; + + /// `FSPICK_NO_AUTOMOUNT` + const FSPICK_NO_AUTOMOUNT = 0x0000_0004; + + /// `FSPICK_EMPTY_PATH` + const FSPICK_EMPTY_PATH = 0x0000_0008; + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +#[cfg(linux_kernel)] +bitflags! { + /// `MS_*` constants for use with [`mount_change`]. + /// + /// [`mount_change`]: crate::mount::mount_change + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub struct MountPropagationFlags: c::c_ulong { + /// `MS_SILENT` + const SILENT = c::MS_SILENT; + /// `MS_SHARED` + const SHARED = c::MS_SHARED; + /// `MS_PRIVATE` + const PRIVATE = c::MS_PRIVATE; + /// `MS_SLAVE` + const SLAVE = c::MS_SLAVE; + /// `MS_UNBINDABLE` + const UNBINDABLE = c::MS_UNBINDABLE; + /// `MS_REC` + const REC = c::MS_REC; + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +#[cfg(linux_kernel)] +bitflags! { + #[repr(transparent)] + #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)] + pub(crate) struct InternalMountFlags: c::c_ulong { + const REMOUNT = c::MS_REMOUNT; + const MOVE = c::MS_MOVE; + + /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags> + const _ = !0; + } +} + +#[cfg(linux_kernel)] +pub(crate) struct MountFlagsArg(pub(crate) c::c_ulong); |