cosmopolitan/libc/calls/tcsetpgrp.c
Justine Tunney b76b2be2d0
Improve zip read-only filesystem
readdir() will now always yield an inode that's consistent with stat()
on ZipOS and Windows in general. More APIs have been updated to return
the appropriate error code when inappropriately trying to do ops, like
sockets, with a zip file descriptor. The path normalization algorithms
are now fully fleshed out. Some socket APIs have been fixed so they'll
raise EBADF vs. ENOTSOCK appropriately. Lastly seekdir() will now work
properly on NetBSD and FreeBSD (not sure why anyone would even use it)
2023-08-16 17:52:12 -07:00

52 lines
2.8 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/calls/termios.h"
#include "libc/dce.h"
#include "libc/intrin/strace.internal.h"
#include "libc/sysv/consts/termios.h"
#include "libc/sysv/errfuns.h"
/**
* Sets foreground process group id.
*
* @return 0 on success, or -1 w/ errno
* @raise EINVAL if `pgrp` is invalid
* @raise ENOSYS on Windows and Bare Metal
* @raise EBADF if `fd` isn't an open file descriptor
* @raise EPERM if `pgrp` didn't match process in our group
* @raise ENOTTY if `fd` is isn't controlling teletypewriter
* @raise EIO if process group of writer is orphoned, calling thread is
* not blocking `SIGTTOU`, and process isn't ignoring `SIGTTOU`
* @asyncsignalsafe
*/
int tcsetpgrp(int fd, int pgrp) {
int rc;
if (fd < g_fds.n && g_fds.p[fd].kind == kFdZip) {
rc = enotty();
} else if (IsWindows() || IsMetal()) {
rc = enosys();
} else {
rc = sys_ioctl(fd, TIOCSPGRP, &pgrp);
}
STRACE("tcsetpgrp(%d, %d) → %d% m", fd, pgrp, rc);
return rc;
}