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30891f35fa
We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/* Implementation of waitid. Hurd version.
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Copyright (C) 1997-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <stddef.h>
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#include <hurd.h>
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#include <hurd/port.h>
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#include <hurd/version.h>
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#include <sysdep-cancel.h>
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int
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__waitid (idtype_t idtype, id_t id, siginfo_t *infop, int options)
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{
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struct rusage ignored;
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error_t err;
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pid_t pid, child;
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int sigcode;
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int status;
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int cancel_oldtype;
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switch (idtype)
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{
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case P_PID:
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if (id <= 0)
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goto invalid;
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pid = (pid_t) id;
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break;
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case P_PGID:
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if (id < 0 || id == 1)
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goto invalid;
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pid = (pid_t) -id;
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break;
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case P_ALL:
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pid = -1;
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break;
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default:
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invalid:
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__set_errno (EINVAL);
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return -1;
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}
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/* Technically we're supposed to return EFAULT if infop is bogus,
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but that would involve mucking with signals, which is
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too much hassle. User will have to deal with SIGSEGV/SIGBUS.
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We just check for a null pointer. */
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if (infop == NULL)
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{
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__set_errno (EFAULT);
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return -1;
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}
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cancel_oldtype = LIBC_CANCEL_ASYNC();
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#if HURD_INTERFACE_VERSION >= 20201227
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err = __USEPORT_CANCEL (PROC, __proc_waitid (port, pid, options,
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&status, &sigcode,
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&ignored, &child));
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if (err == MIG_BAD_ID || err == EOPNOTSUPP)
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#endif
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err = __USEPORT_CANCEL (PROC, __proc_wait (port, pid, options,
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&status, &sigcode,
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&ignored, &child));
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LIBC_CANCEL_RESET (cancel_oldtype);
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if (err == EAGAIN)
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{
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/* POSIX.1-2008, Technical Corrigendum 1 XSH/TC1-2008/0713 [153] states
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that if waitid returns because WNOHANG was specified and status is
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not available for any process specified by idtype and id, then the
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si_signo and si_pid members of the structure pointed to by infop
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shall be set to zero. */
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infop->si_signo = 0;
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infop->si_code = 0;
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return 0;
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}
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if (err != 0)
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return __hurd_fail (err);
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/* Decode the status field and set infop members... */
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infop->si_signo = SIGCHLD;
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infop->si_pid = child;
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infop->si_errno = 0;
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if (WIFEXITED (status))
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{
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infop->si_code = CLD_EXITED;
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infop->si_status = WEXITSTATUS (status);
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}
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else if (WIFSIGNALED (status))
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{
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infop->si_code = WCOREDUMP (status) ? CLD_DUMPED : CLD_KILLED;
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infop->si_status = WTERMSIG (status);
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}
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else if (WIFSTOPPED (status))
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{
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infop->si_code = CLD_STOPPED;
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infop->si_status = WSTOPSIG (status);
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}
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else if (WIFCONTINUED (status))
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{
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infop->si_code = CLD_CONTINUED;
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infop->si_status = SIGCONT;
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}
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return 0;
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}
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weak_alias (__waitid, waitid)
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strong_alias (__waitid, __libc_waitid)
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