fix open bindings

`open` specifies the `mode` argument as vararg (presumably to make it
optional). varargs actually have rules about casting, in this case the
rule that any integer arg of size <= 4 has to be casted to `i32` before
passing it.

Not doing that implicit cast makes the permissions wrong or not apply at
all.
This commit is contained in:
Laytan Laats
2024-08-16 22:54:53 +02:00
parent 970dc7a1f2
commit f7d7d65bc0
8 changed files with 45 additions and 21 deletions
+2 -2
View File
@@ -348,7 +348,7 @@ foreign libc {
@(link_name="fork") _unix_fork :: proc() -> pid_t ---
@(link_name="getthrid") _unix_getthrid :: proc() -> int ---
@(link_name="open") _unix_open :: proc(path: cstring, flags: c.int, mode: c.int) -> Handle ---
@(link_name="open") _unix_open :: proc(path: cstring, flags: c.int, #c_vararg mode: ..u32) -> Handle ---
@(link_name="close") _unix_close :: proc(fd: Handle) -> c.int ---
@(link_name="read") _unix_read :: proc(fd: Handle, buf: rawptr, size: c.size_t) -> c.ssize_t ---
@(link_name="write") _unix_write :: proc(fd: Handle, buf: rawptr, size: c.size_t) -> c.ssize_t ---
@@ -412,7 +412,7 @@ fork :: proc() -> (Pid, Error) {
open :: proc(path: string, flags: int = O_RDONLY, mode: int = 0) -> (Handle, Error) {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cstr := strings.clone_to_cstring(path, context.temp_allocator)
handle := _unix_open(cstr, c.int(flags), c.int(mode))
handle := _unix_open(cstr, c.int(flags), c.uint(mode))
if handle == -1 {
return INVALID_HANDLE, get_last_error()
}