Add new mount api syscall for linux

Author: yujincheng08

src/fs/mount.rs

@@ -1,8 +1,10 @@
 //! Linux `mount`.
 
 use crate::backend::fs::types::{
-    InternalMountFlags, MountFlags, MountFlagsArg, MountPropagationFlags, UnmountFlags,
+    FsMountFlags, FsOpenFlags, FsPickFlags, InternalMountFlags, MountAttrFlags, MountFlags,
+    MountFlagsArg, MountPropagationFlags, MoveMountFlags, OpenTreeFlags, UnmountFlags,
 };
+use crate::fd::{BorrowedFd, OwnedFd};
 use crate::{backend, io, path};
 
 /// `mount(source, target, filesystemtype, mountflags, data)`
@@ -164,3 +166,123 @@ pub fn move_mount<Source: path::Arg, Target: path::Arg>(
 pub fn unmount<Target: path::Arg>(target: Target, flags: UnmountFlags) -> io::Result<()> {
     target.into_with_c_str(|target| backend::fs::syscalls::unmount(target, flags))
 }
+
+/// `fsopen(fs_name, flags)`
+pub fn fsopen<Fs: path::Arg>(fs_name: Fs, flags: FsOpenFlags) -> io::Result<OwnedFd> {
+    fs_name.into_with_c_str(|fs_name| backend::fs::syscalls::fsopen(fs_name, flags))
+}
+
+/// `fsmount(fs_fd, flags, attr_flags)`
+pub fn fsmount(
+    fs_fd: BorrowedFd<'_>,
+    flags: FsMountFlags,
+    attr_flags: MountAttrFlags,
+) -> io::Result<()> {
+    backend::fs::syscalls::fsmount(fs_fd, flags, attr_flags)
+}
+
+/// `move_mount(from_dfd, from_pathname, to_dfd, to_pathname, flags)`
+pub fn move_mount_<From: path::Arg, To: path::Arg>(
+    from_dfd: BorrowedFd<'_>,
+    from_pathname: From,
+    to_dfd: BorrowedFd<'_>,
+    to_pathname: To,
+    flags: MoveMountFlags,
+) -> io::Result<()> {
+    from_pathname.into_with_c_str(|from_pathname| {
+        to_pathname.into_with_c_str(|to_pathname| {
+            backend::fs::syscalls::move_mount(from_dfd, from_pathname, to_dfd, to_pathname, flags)
+        })
+    })
+}
+
+/// `open_tree(dfd, filename, flags)`
+pub fn open_tree<Path: path::Arg>(
+    dfd: BorrowedFd<'_>,
+    filename: Path,
+    flags: OpenTreeFlags,
+) -> io::Result<OwnedFd> {
+    filename.into_with_c_str(|filename| backend::fs::syscalls::open_tree(dfd, filename, flags))
+}
+
+/// `fspick(dfd, path, flags)`
+pub fn fspick<Path: path::Arg>(
+    dfd: BorrowedFd<'_>,
+    path: Path,
+    flags: FsPickFlags,
+) -> io::Result<OwnedFd> {
+    path.into_with_c_str(|path| backend::fs::syscalls::fspick(dfd, path, flags))
+}
+
+/// `fsconfig(fs_fd, FSCONFIG_SET_FLAG, key, NULL, 0)`
+#[doc(alias = "fsconfig")]
+pub fn fsconfig_set_flag<Key: path::Arg>(fs_fd: BorrowedFd<'_>, key: Key) -> io::Result<()> {
+    key.into_with_c_str(|key| backend::fs::syscalls::fsconfig_set_flag(fs_fd, key))
+}
+
+/// `fsconfig(fs_fd, FSCONFIG_SET_STRING, key, value, 0)`
+#[doc(alias = "fsconfig")]
+pub fn fsconfig_set_string<Key: path::Arg, Value: path::Arg>(
+    fs_fd: BorrowedFd<'_>,
+    key: Key,
+    value: Value,
+) -> io::Result<()> {
+    key.into_with_c_str(|key| {
+        value.into_with_c_str(|value| backend::fs::syscalls::fsconfig_set_string(fs_fd, key, value))
+    })
+}
+
+/// `fsconfig(fs_fd, FSCONFIG_SET_BINARY, key, value, value.len())`
+#[doc(alias = "fsconfig")]
+pub fn fsconfig_set_binary<Key: path::Arg>(
+    fs_fd: BorrowedFd<'_>,
+    key: Key,
+    value: &[u8],
+) -> io::Result<()> {
+    key.into_with_c_str(|key| backend::fs::syscalls::fsconfig_set_binary(fs_fd, key, value))
+}
+
+/// `fsconfig(fs_fd, FSCONFIG_SET_PATH, key, path, fd)`
+#[doc(alias = "fsconfig")]
+pub fn fsconfig_set_path<Key: path::Arg, Path: path::Arg>(
+    fs_fd: BorrowedFd<'_>,
+    key: Key,
+    path: Path,
+    fd: BorrowedFd<'_>,
+) -> io::Result<()> {
+    key.into_with_c_str(|key| {
+        path.into_with_c_str(|path| backend::fs::syscalls::fsconfig_set_path(fs_fd, key, path, fd))
+    })
+}
+
+/// `fsconfig(fs_fd, FSCONFIG_SET_PATH_EMPTY, key, "", fd)`
+#[doc(alias = "fsconfig")]
+pub fn fsconfig_set_path_empty<Key: path::Arg>(
+    fs_fd: BorrowedFd<'_>,
+    key: Key,
+    fd: BorrowedFd<'_>,
+) -> io::Result<()> {
+    key.into_with_c_str(|key| backend::fs::syscalls::fsconfig_set_path_empty(fs_fd, key, fd))
+}
+
+/// `fsconfig(fs_fd, FSCONFIG_SET_FD, key, NULL, fd)`
+#[doc(alias = "fsconfig")]
+pub fn fsconfig_set_fd<Key: path::Arg>(
+    fs_fd: BorrowedFd<'_>,
+    key: Key,
+    fd: BorrowedFd<'_>,
+) -> io::Result<()> {
+    key.into_with_c_str(|key| backend::fs::syscalls::fsconfig_set_fd(fs_fd, key, fd))
+}
+
+/// `fsconfig(fs_fd, FSCONFIG_CMD_CREATE, key, NULL, 0)`
+#[doc(alias = "fsconfig")]
+pub fn fsconfig_create(fs_fd: BorrowedFd<'_>) -> io::Result<()> {
+    backend::fs::syscalls::fsconfig_create(fs_fd)
+}
+
+/// `fsconfig(fs_fd, FSCONFIG_CMD_RECONFIGURE, key, NULL, 0)`
+#[doc(alias = "fsconfig")]
+pub fn fsconfig_reconfigure(fs_fd: BorrowedFd<'_>) -> io::Result<()> {
+    backend::fs::syscalls::fsconfig_reconfigure(fs_fd)
+}