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os2: propogate errors from execv functions to parent

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This commit is contained in:
Laytan Laats
2024-08-25 18:01:33 +02:00
parent d410281766
commit a0fe6da10b
3 changed files with 14 additions and 22 deletions
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core/os/os2/process_posix.odin
+8 -11
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@@ -139,20 +139,22 @@ _process_start :: proc(desc: Process_Desc) -> (process: Process, err: Error) {
err = _get_platform_error()
return
}
defer posix.close(pipe[WRITE])
defer posix.close(pipe[READ])
if posix.fcntl(pipe[READ], .SETFD, i32(posix.FD_CLOEXEC)) == -1 {
posix.close(pipe[WRITE])
err = _get_platform_error()
return
}
if posix.fcntl(pipe[WRITE], .SETFD, i32(posix.FD_CLOEXEC)) == -1 {
posix.close(pipe[WRITE])
err = _get_platform_error()
return
}
switch pid := posix.fork(); pid {
case -1:
posix.close(pipe[WRITE])
err = _get_platform_error()
return
@@ -179,25 +181,20 @@ _process_start :: proc(desc: Process_Desc) -> (process: Process, err: Error) {
if posix.chdir(cwd) != .OK { abort(pipe[WRITE]) }
}
ok := u8(0)
posix.write(pipe[WRITE], &ok, 1)
res := posix.execve(strings.to_cstring(&exe_builder), raw_data(cmd), env)
// NOTE: we can't tell the parent about this failure because we already wrote the success byte.
// So if this happens the user will just see the process failed when they call process_wait.
assert(res == -1)
runtime.trap()
abort(pipe[WRITE])
case:
posix.close(pipe[WRITE])
errno: posix.Errno
for {
errno_byte: u8
switch posix.read(pipe[READ], &errno_byte, 1) {
case 1:
case 1:
errno = posix.Errno(errno_byte)
case:
case -1:
errno = posix.errno()
if errno == .EINTR {
continue