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implement open for wasi_wasm32 target

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This commit is contained in:
JopStro
2022-10-31 21:21:10 +00:00
parent f8228e305a
commit 71eb21aab7
1 changed files with 32 additions and 3 deletions
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core/os/os_wasi.odin
+32 -3
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@@ -24,7 +24,7 @@ O_CLOEXEC :: 0x80000
stdin: Handle = 0 stdin: Handle = 0
stdout: Handle = 1 stdout: Handle = 1
stderr: Handle = 2 stderr: Handle = 2
default_dir: Handle = 3
write :: proc(fd: Handle, data: []byte) -> (int, Errno) { write :: proc(fd: Handle, data: []byte) -> (int, Errno) {
iovs := wasi.ciovec_t(data) iovs := wasi.ciovec_t(data)
@@ -47,7 +47,36 @@ read_at :: proc(fd: Handle, data: []byte, offset: i64) -> (int, Errno) {
return int(n), Errno(err) return int(n), Errno(err)
} }
open :: proc(path: string, mode: int = O_RDONLY, perm: int = 0) -> (Handle, Errno) { open :: proc(path: string, mode: int = O_RDONLY, perm: int = 0) -> (Handle, Errno) {
return 0, -1 oflags: wasi.oflags_t
if mode & O_CREATE == O_CREATE {
oflags += {.CREATE}
}
if mode & O_EXCL == O_EXCL {
oflags += {.EXCL}
}
if mode & O_TRUNC == O_TRUNC {
oflags += {.TRUNC}
}
rights: wasi.rights_t = {.FD_SEEK}
switch mode & (O_RDONLY|O_WRONLY|O_RDWR) {
case O_RDONLY: rights += {.FD_READ}
case O_WRONLY: rights += {.FD_WRITE}
case O_RDWR: rights += {.FD_READ, .FD_WRITE}
}
fdflags: wasi.fdflags_t
if mode & O_APPEND == O_APPEND {
fdflags += {.APPEND}
}
if mode & O_NONBLOCK == O_NONBLOCK {
fdflags += {.NONBLOCK}
}
if mode & O_SYNC == O_SYNC {
fdflags += {.SYNC}
}
fd, err := wasi.path_open(wasi.fd_t(default_dir),{.SYMLINK_FOLLOW},path,oflags,rights,{},fdflags)
return Handle(fd), Errno(err)
} }
close :: proc(fd: Handle) -> Errno { close :: proc(fd: Handle) -> Errno {
err := wasi.fd_close(wasi.fd_t(fd)) err := wasi.fd_close(wasi.fd_t(fd))
@@ -96,4 +125,4 @@ heap_free :: proc(ptr: rawptr) {
exit :: proc "contextless" (code: int) -> ! { exit :: proc "contextless" (code: int) -> ! {
runtime._cleanup_runtime_contextless() runtime._cleanup_runtime_contextless()
wasi.proc_exit(wasi.exitcode_t(code)) wasi.proc_exit(wasi.exitcode_t(code))
} }