mirror of
https://github.com/DragonOS-Community/DragonOS.git
synced 2025-06-14 03:46:47 +00:00
108 lines
3.7 KiB
Rust
108 lines
3.7 KiB
Rust
const F_LINUX_SPECIFIC_BASE: u32 = 1024;
|
||
|
||
/// fcntl syscall command
|
||
///
|
||
/// for linux-specific fcntl commands, see:
|
||
/// https://code.dragonos.org.cn/xref/linux-5.19.10/tools/include/uapi/linux/fcntl.h#8
|
||
#[derive(Debug, Copy, Clone, Eq, PartialEq, FromPrimitive, ToPrimitive)]
|
||
#[repr(u32)]
|
||
pub enum FcntlCommand {
|
||
/// dup
|
||
DupFd = 0,
|
||
/// get close-on-exec
|
||
GetFd = 1,
|
||
/// set/clear close-on-exec
|
||
SetFd = 2,
|
||
/// get file flags
|
||
GetFlags = 3,
|
||
/// set file flags
|
||
SetFlags = 4,
|
||
/// get record locking info
|
||
GetLock = 5,
|
||
/// set record locking info (non-blocking)
|
||
SetLock = 6,
|
||
/// set record locking info (blocking)
|
||
SetLockWait = 7,
|
||
|
||
SetLease = F_LINUX_SPECIFIC_BASE + 0,
|
||
GetLease = F_LINUX_SPECIFIC_BASE + 1,
|
||
|
||
/// Request nofications on a directory.
|
||
/// See below for events that may be notified.
|
||
Notify = F_LINUX_SPECIFIC_BASE + 2,
|
||
|
||
/// Cancel a blocking posix lock; internal use only until we expose an
|
||
/// asynchronous lock api to userspace
|
||
CancelLock = F_LINUX_SPECIFIC_BASE + 5,
|
||
/// Create a file descriptor with FD_CLOEXEC set.
|
||
DupFdCloexec = F_LINUX_SPECIFIC_BASE + 6,
|
||
|
||
/// Set pipe page size array
|
||
SetPipeSize = F_LINUX_SPECIFIC_BASE + 7,
|
||
/// Get pipe page size array
|
||
GetPipeSize = F_LINUX_SPECIFIC_BASE + 8,
|
||
|
||
/// Set seals
|
||
AddSeals = F_LINUX_SPECIFIC_BASE + 9,
|
||
/// Get seals
|
||
GetSeals = F_LINUX_SPECIFIC_BASE + 10,
|
||
|
||
/**
|
||
* Set/Get write life time hints. {GET,SET}_RW_HINT operate on the
|
||
* underlying inode, while {GET,SET}_FILE_RW_HINT operate only on
|
||
* the specific file.
|
||
*/
|
||
GetRwHint = F_LINUX_SPECIFIC_BASE + 11,
|
||
SetRwHint = F_LINUX_SPECIFIC_BASE + 12,
|
||
GetFileRwHint = F_LINUX_SPECIFIC_BASE + 13,
|
||
SetFileRwHint = F_LINUX_SPECIFIC_BASE + 14,
|
||
}
|
||
|
||
bitflags! {
|
||
|
||
/// The constants AT_REMOVEDIR and AT_EACCESS have the same value. AT_EACCESS is
|
||
/// meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to
|
||
/// unlinkat. The two functions do completely different things and therefore,
|
||
/// the flags can be allowed to overlap. For example, passing AT_REMOVEDIR to
|
||
/// faccessat would be undefined behavior and thus treating it equivalent to
|
||
/// AT_EACCESS is valid undefined behavior.
|
||
pub struct AtFlags: i32 {
|
||
/// 特殊值，用于指示openat应使用当前工作目录。
|
||
const AT_FDCWD = -100;
|
||
/// 不要跟随符号链接。
|
||
const AT_SYMLINK_NOFOLLOW = 0x100;
|
||
/// AtEAccess: 使用有效ID进行访问测试，而不是实际ID。
|
||
const AT_EACCESS = 0x200;
|
||
/// AtRemoveDir: 删除目录而不是取消链接文件。
|
||
const AT_REMOVEDIR = 0x200;
|
||
|
||
/// 跟随符号链接。
|
||
/// AT_SYMLINK_FOLLOW: 0x400
|
||
const AT_SYMLINK_FOLLOW = 0x400;
|
||
/// 禁止终端自动挂载遍历。
|
||
/// AT_NO_AUTOMOUNT: 0x800
|
||
const AT_NO_AUTOMOUNT = 0x800;
|
||
/// 允许空的相对路径名。
|
||
/// AT_EMPTY_PATH: 0x1000
|
||
const AT_EMPTY_PATH = 0x1000;
|
||
/// statx()所需的同步类型。
|
||
/// AT_STATX_SYNC_TYPE: 0x6000
|
||
const AT_STATX_SYNC_TYPE = 0x6000;
|
||
/// 执行与stat()相同的操作。
|
||
/// AT_STATX_SYNC_AS_STAT: 0x0000
|
||
const AT_STATX_SYNC_AS_STAT = 0x0000;
|
||
/// 强制将属性与服务器同步。
|
||
/// AT_STATX_FORCE_SYNC: 0x2000
|
||
const AT_STATX_FORCE_SYNC = 0x2000;
|
||
/// 不要将属性与服务器同步。
|
||
/// AT_STATX_DONT_SYNC: 0x4000
|
||
const AT_STATX_DONT_SYNC = 0x4000;
|
||
/// 应用于整个子树。
|
||
/// AT_RECURSIVE: 0x8000
|
||
const AT_RECURSIVE = 0x8000;
|
||
}
|
||
}
|
||
|
||
/// for F_[GET|SET]FL
|
||
pub const FD_CLOEXEC: u32 = 1;
|