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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,
))
}
}