Paul
41 lines
944 B
Rust
41 lines
944 B
Rust
use core::slice;
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use syscall;
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use c_str;
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use types::*;
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pub unsafe fn cstr_to_slice<'a>(buf: *const c_char) -> &'a [u8] {
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slice::from_raw_parts(buf as *const u8, ::strlen(buf) as usize)
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}
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pub fn chdir(path: *const c_char) -> c_int {
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syscall::chdir(cstr_to_slice(path))? as c_int
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}
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pub fn close(fd: c_int) -> c_int {
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syscall::close(fd as usize);
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0
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}
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pub fn dup(fd: c_int) -> c_int {
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syscall::dup(fd as usize, &[])? as c_int
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}
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pub fn dup2(fd1: c_int, fd2) -> c_int {
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syscall::dup2(fd1 as usize, fd2 as usize, &[])? as c_int
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}
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pub fn exit(status: c_int) -> ! {
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syscall::exit(status as usize);
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loop {}
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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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let path = unsafe { c_str(path) };
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syscall::open(path, (oflag as usize) | (mode as usize)).unwrap() as c_int
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}
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pub fn write(fd: c_int, buf: &[u8]) -> ssize_t {
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syscall::write(fd as usize, buf);
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buf.len() as ssize_t
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}
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