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[sys/linux]: Fix syscalls: lseek, preadv, pwritev; Make read*/write* syscalls take byte slice instead of generic slice

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This commit is contained in:
flysand7
2023-11-08 10:57:23 +11:00
parent f26ed39e86
commit 13a3c0e57c
1 changed files with 13 additions and 12 deletions
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core/sys/linux/sys.odin
+13 -12
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@@ -11,8 +11,8 @@ import "core:intrinsics"
Available since Linux 1.0.
Before Linux 3.14, this operation is not atomic (i.e. not thread safe).
*/
read :: proc "contextless" (fd: Fd, buf: []$T) -> (int, Errno) {
ret := syscall(SYS_read, fd, raw_data(buf), len(buf) * size_of(T))
read :: proc "contextless" (fd: Fd, buf: []u8) -> (int, Errno) {
ret := syscall(SYS_read, fd, raw_data(buf), len(buf))
return errno_unwrap(ret, int)
}
@@ -28,8 +28,8 @@ read :: proc "contextless" (fd: Fd, buf: []$T) -> (int, Errno) {
Available since Linux 1.0
Before Linux 3.14 this operation is not atomic (i.e. not thread safe)
*/
write :: proc "contextless" (fd: Fd, buf: []$T) -> (int, Errno) {
ret := syscall(SYS_write, fd, raw_data(buf), len(buf)*size_of(T))
write :: proc "contextless" (fd: Fd, buf: []u8) -> (int, Errno) {
ret := syscall(SYS_write, fd, raw_data(buf), len(buf))
return errno_unwrap(ret, int)
}
@@ -145,13 +145,14 @@ poll :: proc "contextless" (fds: []Poll_Fd, timeout: i32) -> (i32, Errno) {
Available since Linux 1.0.
On 32-bit platforms available since Linux 1.2.
*/
lseek :: proc "contextless" (fd: Fd, off: i64, whence: Seek_Whence) -> (Errno) {
lseek :: proc "contextless" (fd: Fd, off: i64, whence: Seek_Whence) -> (i64, Errno) {
when size_of(int) == 8 {
ret := syscall(SYS_lseek, fd, off, whence)
return Errno(-ret)
return errno_unwrap(ret, i64)
} else {
ret := syscall(SYS__llseek, fd, compat64_arg_pair(off), whence)
return Errno(-ret)
result: i64 ---
ret := syscall(SYS__llseek, fd, compat64_arg_pair(off), &result, whence)
return result, Errno(-ret)
}
}
@@ -223,8 +224,8 @@ rt_sigprocmask :: proc "contextless" (mask_kind: Sig_Mask_Kind, new_set: ^Sig_Se
Note, it is not an error to return less bytes than requested.
Available since Linux 2.2.
*/
pread :: proc "contextless" (fd: Fd, buf: []$T, offset: i64) -> (int, Errno) {
ret := syscall(SYS_pread64, fd, raw_data(buf), compat64_arg_pair(len(buf)*size_of(T)))
pread :: proc "contextless" (fd: Fd, buf: []u8, offset: i64) -> (int, Errno) {
ret := syscall(SYS_pread64, fd, raw_data(buf), len(buf), compat64_arg_pair(offset))
return errno_unwrap(ret, int)
}
@@ -233,8 +234,8 @@ pread :: proc "contextless" (fd: Fd, buf: []$T, offset: i64) -> (int, Errno) {
Note, it is not an error to return less bytes than requested.
Available since Linux 2.2.
*/
pwrite :: proc "contextless" (fd: Fd, buf: []$T, offset: i64) -> (int, Errno) {
ret := syscall(SYS_pwrite64, fd, raw_data(buf), compat64_arg_pair(len(buf)*size_of(T)))
pwrite :: proc "contextless" (fd: Fd, buf: []u8, offset: i64) -> (int, Errno) {
ret := syscall(SYS_pwrite64, fd, raw_data(buf), len(buf), compat64_arg_pair(offset))
return errno_unwrap(ret, int)
}