diff options
Diffstat (limited to 'vendor/rustix/src/backend/libc/mount/syscalls.rs')
| -rw-r--r-- | vendor/rustix/src/backend/libc/mount/syscalls.rs | 272 |
1 files changed, 272 insertions, 0 deletions
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 000000000..26cdb52dc --- /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<()> { + 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(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, + )) + } +} |