Dan Robertson
40b6a9c5cc
Update platform support for linux to avoid the use of syscalls not
supported by Aarch64.
- link, chown, and open should use fchownat and linkat with fd
set to AT_FDCWD.
- use dup3 with the 3rd arg set to 0 instead of dup2.
105 lines
2.3 KiB
Rust
105 lines
2.3 KiB
Rust
use types::*;
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const AT_FDCWD: c_int = -100;
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pub fn brk(addr: *const c_void) -> c_int {
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unsafe {
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let newbrk = syscall!(BRK, addr);
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if newbrk < addr as usize {
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-1
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} else {
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0
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}
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}
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}
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pub fn chdir(path: *const c_char) -> c_int {
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unsafe { syscall!(CHDIR, path) as c_int }
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}
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pub fn chown(path: *const c_char, owner: uid_t, group: gid_t) -> c_int {
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unsafe { syscall!(FCHOWNAT, AT_FDCWD, path, owner as u32, group as u32) as c_int }
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}
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pub fn close(fildes: c_int) -> c_int {
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unsafe { syscall!(CLOSE, fildes) as c_int }
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}
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pub fn dup(fildes: c_int) -> c_int {
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unsafe { syscall!(DUP, fildes) as c_int }
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}
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pub fn dup2(fildes: c_int, fildes2: c_int) -> c_int {
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unsafe { syscall!(DUP3, fildes, fildes2, 0) as c_int }
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}
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pub fn exit(status: c_int) -> ! {
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unsafe {
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syscall!(EXIT, status);
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}
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loop {}
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}
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pub fn fchown(fildes: c_int, owner: uid_t, group: gid_t) -> c_int {
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unsafe { syscall!(FCHOWN, fildes, owner, group) as c_int }
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}
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pub fn fchdir(fildes: c_int) -> c_int {
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unsafe { syscall!(FCHDIR, fildes) as c_int }
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}
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pub fn fsync(fildes: c_int) -> c_int {
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unsafe { syscall!(FSYNC, fildes) as c_int }
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}
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pub fn ftruncate(fildes: c_int, length: off_t) -> c_int {
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unsafe { syscall!(FTRUNCATE, fildes, length) as c_int }
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}
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pub fn getcwd(buf: *mut c_char, size: size_t) -> *mut c_char {
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unsafe {
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syscall!(GETCWD, buf, size);
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buf as *mut c_char
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}
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}
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pub fn getegid() -> gid_t {
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unsafe { syscall!(GETEGID) }
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}
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pub fn geteuid() -> uid_t {
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unsafe { syscall!(GETEUID) }
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}
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pub fn getgid() -> gid_t {
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unsafe { syscall!(GETGID) }
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}
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pub fn getpgid(pid: pid_t) -> pid_t {
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unsafe { syscall!(GETPGID, pid) }
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}
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pub fn getpid() -> pid_t {
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unsafe { syscall!(GETPID) }
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}
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pub fn getppid() -> pid_t {
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unsafe { syscall!(GETPPID) }
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}
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pub fn getuid() -> uid_t {
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unsafe { syscall!(GETUID) }
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}
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pub fn link(path1: *const c_char, path2: *const c_char) -> c_int {
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unsafe { syscall!(LINKAT, AT_FDCWD, path1, path2) as c_int }
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}
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pub fn open(path: *const c_char, oflag: c_int, mode: mode_t) -> c_int {
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unsafe { syscall!(OPENAT, AT_FDCWD, path, oflag, mode) as c_int }
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}
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pub fn write(fildes: c_int, buf: &[u8]) -> ssize_t {
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unsafe { syscall!(WRITE, fildes, buf.as_ptr(), buf.len()) as ssize_t }
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}
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