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make file access a little more normal across platforms

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This commit is contained in:
Colin Davidson
2023-02-14 18:34:03 -08:00
parent 48685e8bf1
commit 04b1023988
2 changed files with 71 additions and 35 deletions
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core/os/os_linux.odin
+31 -3
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@@ -476,7 +476,11 @@ close :: proc(fd: Handle) -> Errno {
}
read :: proc(fd: Handle, data: []byte) -> (int, Errno) {
bytes_read := _unix_read(fd, &data[0], c.size_t(len(data)))
if len(data) == 0 {
return 0, ERROR_NONE
}
bytes_read := _unix_read(fd, raw_data(data), c.size_t(len(data)))
if bytes_read < 0 {
return -1, _get_errno(bytes_read)
}
@@ -487,11 +491,35 @@ write :: proc(fd: Handle, data: []byte) -> (int, Errno) {
if len(data) == 0 {
return 0, ERROR_NONE
}
bytes_written := _unix_write(fd, &data[0], uint(len(data)))
bytes_written := _unix_write(fd, raw_data(data), uint(len(data)))
if bytes_written < 0 {
return -1, _get_errno(bytes_written)
}
return int(bytes_written), ERROR_NONE
return bytes_written, ERROR_NONE
}
read_at :: proc(fd: Handle, data: []byte, offset: i64) -> (int, Errno) {
if len(data) == 0 {
return 0, ERROR_NONE
}
bytes_read := unix.sys_pread(int(fd), raw_data(data), c.size_t(len(data)), offset)
if bytes_read < 0 {
return -1, _get_errno(bytes_read)
}
return bytes_read, ERROR_NONE
}
write_at :: proc(fd: Handle, data: []byte, offset: i64) -> (int, Errno) {
if len(data) == 0 {
return 0, ERROR_NONE
}
bytes_written := unix.sys_pwrite(int(fd), raw_data(data), uint(len(data)), offset)
if bytes_written < 0 {
return -1, _get_errno(bytes_written)
}
return bytes_written, ERROR_NONE
}
seek :: proc(fd: Handle, offset: i64, whence: int) -> (i64, Errno) {