diff options
Diffstat (limited to 'sysdeps/posix/waitid.c')
| -rw-r--r-- | sysdeps/posix/waitid.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/sysdeps/posix/waitid.c b/sysdeps/posix/waitid.c deleted file mode 100644 index 2c23cdbb25..0000000000 --- a/sysdeps/posix/waitid.c +++ /dev/null @@ -1,166 +0,0 @@ -/* Pseudo implementation of waitid. - Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1997. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <assert.h> -#include <errno.h> -#include <signal.h> -#define __need_NULL -#include <stddef.h> -#include <sys/wait.h> -#include <sys/types.h> -#include <sysdep-cancel.h> - - -#ifdef DO_WAITID -# define OUR_WAITID DO_WAITID -#elif !defined NO_DO_WAITID -# define OUR_WAITID do_waitid -#endif - -#ifdef OUR_WAITID -static int -OUR_WAITID (idtype_t idtype, id_t id, siginfo_t *infop, int options) -{ - pid_t pid, child; - int status; - - switch (idtype) - { - case P_PID: - if(id <= 0) - goto invalid; - pid = (pid_t) id; - break; - case P_PGID: - if (id < 0 || id == 1) - goto invalid; - pid = (pid_t) -id; - break; - case P_ALL: - pid = -1; - break; - default: - invalid: - __set_errno (EINVAL); - return -1; - } - - /* Technically we're supposed to return EFAULT if infop is bogus, - but that would involve mucking with signals, which is - too much hassle. User will have to deal with SIGSEGV/SIGBUS. - We just check for a null pointer. */ - - if (infop == NULL) - { - __set_errno (EFAULT); - return -1; - } - - /* This emulation using waitpid cannot support the waitid modes in which - we do not reap the child, or match only stopped and not dead children. */ - if (0 -#ifdef WNOWAIT - || (options & WNOWAIT) -#endif -#ifdef WEXITED - || ((options & (WEXITED|WSTOPPED|WCONTINUED)) - != (WEXITED | (options & WSTOPPED))) -#endif - ) - { - __set_errno (ENOTSUP); - return -1; - } - - /* Note the waitid() is a cancellation point. But since we call - waitpid() which itself is a cancellation point we do not have - to do anything here. */ - child = __waitpid (pid, &status, - options -#ifdef WEXITED - &~ WEXITED -#endif - ); - - if (child == -1) - /* `waitpid' set `errno' for us. */ - return -1; - - if (child == 0) - { - /* The WHOHANG bit in OPTIONS is set and there are children available - but none has a status for us. The XPG docs do not mention this - case so we clear the `siginfo_t' struct and return successfully. */ - infop->si_signo = 0; - infop->si_code = 0; - return 0; - } - - /* Decode the status field and set infop members... */ - infop->si_signo = SIGCHLD; - infop->si_pid = child; - infop->si_errno = 0; - - if (WIFEXITED (status)) - { - infop->si_code = CLD_EXITED; - infop->si_status = WEXITSTATUS (status); - } - else if (WIFSIGNALED (status)) - { - infop->si_code = WCOREDUMP (status) ? CLD_DUMPED : CLD_KILLED; - infop->si_status = WTERMSIG (status); - } - else if (WIFSTOPPED (status)) - { - infop->si_code = CLD_STOPPED; - infop->si_status = WSTOPSIG (status); - } -#ifdef WIFCONTINUED - else if (WIFCONTINUED (status)) - { - infop->si_code = CLD_CONTINUED; - infop->si_status = SIGCONT; - } -#endif - else - /* Can't happen. */ - assert (! "What?"); - - return 0; -} -#endif - - -int -__waitid (idtype_t idtype, id_t id, siginfo_t *infop, int options) -{ - if (SINGLE_THREAD_P) - return do_waitid (idtype, id, infop, options); - - int oldtype = LIBC_CANCEL_ASYNC (); - - int result = do_waitid (idtype, id, infop, options); - - LIBC_CANCEL_RESET (oldtype); - - return result; -} -weak_alias (__waitid, waitid) -strong_alias (__waitid, __libc_waitid) |