diff options
Diffstat (limited to 'sysdeps/mach/hurd/kill.c')
| -rw-r--r-- | sysdeps/mach/hurd/kill.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/sysdeps/mach/hurd/kill.c b/sysdeps/mach/hurd/kill.c deleted file mode 100644 index 2d556dd2ff..0000000000 --- a/sysdeps/mach/hurd/kill.c +++ /dev/null @@ -1,149 +0,0 @@ -/* Copyright (C) 1991-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - 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 <errno.h> -#include <sys/types.h> -#include <signal.h> -#include <hurd.h> -#include <hurd/port.h> -#include <hurd/signal.h> -#include <hurd/msg.h> - -/* Send signal SIG to process number PID. If PID is zero, - send SIG to all processes in the current process's process group. - If PID is < -1, send SIG to all processes in process group - PID. */ -int -__kill (pid_t pid, int sig) -{ - int delivered = 0; /* Set when we deliver any signal. */ - error_t err; - mach_port_t proc; - struct hurd_userlink ulink; - - void kill_pid (pid_t pid) /* Kill one PID. */ - { - /* SIGKILL is not delivered as a normal signal. - Sending SIGKILL to a process means to terminate its task. */ - if (sig == SIGKILL) - /* Fetch the process's task port and terminate the task. We - loop in case the process execs and changes its task port. - If the old task port dies after we fetch it but before we - send the RPC, we get MACH_SEND_INVALID_DEST; if it dies - after we send the RPC request but before it is serviced, we - get MIG_SERVER_DIED. */ - do - { - task_t refport; - err = __proc_pid2task (proc, pid, &refport); - /* Ignore zombies. */ - if (!err && refport != MACH_PORT_NULL) - { - err = __task_terminate (refport); - __mach_port_deallocate (__mach_task_self (), refport); - } - } while (err == MACH_SEND_INVALID_DEST || - err == MIG_SERVER_DIED); - else - { - error_t taskerr; - error_t kill_port (mach_port_t msgport, mach_port_t refport) - { - if (msgport != MACH_PORT_NULL) - /* Send a signal message to his message port. */ - return __msg_sig_post (msgport, sig, 0, refport); - - /* The process has no message port. Perhaps try direct - frobnication of the task. */ - - if (taskerr) - /* If we could not get the task port, we can do nothing. */ - return taskerr; - - if (refport == MACH_PORT_NULL) - /* proc_pid2task returned success with a null task port. - That means the process is a zombie. Signals - to zombies should return success and do nothing. */ - return 0; - - /* For user convenience in the case of a task that has - not registered any message port with the proc server, - translate a few signals to direct task operations. */ - switch (sig) - { - /* The only signals that really make sense for an - unregistered task are kill, suspend, and continue. */ - case SIGSTOP: - case SIGTSTP: - return __task_suspend (refport); - case SIGCONT: - return __task_resume (refport); - case SIGTERM: - case SIGQUIT: - case SIGINT: - return __task_terminate (refport); - default: - /* We have full permission to send signals, but there is - no meaningful way to express this signal. */ - return EPERM; - } - } - err = HURD_MSGPORT_RPC (__proc_getmsgport (proc, pid, &msgport), - (taskerr = __proc_pid2task (proc, pid, - &refport)) ? - __proc_getsidport (proc, &refport) : 0, 1, - kill_port (msgport, refport)); - } - if (! err) - delivered = 1; - } - - proc = _hurd_port_get (&_hurd_ports[INIT_PORT_PROC], &ulink); - - if (pid <= 0) - { - /* Send SIG to each process in pgrp (- PID). */ - pid_t pidbuf[10], *pids = pidbuf; - mach_msg_type_number_t i, npids = sizeof (pidbuf) / sizeof (pidbuf[0]); - - err = __proc_getpgrppids (proc, - pid, &pids, &npids); - if (!err) - { - for (i = 0; i < npids; ++i) - { - kill_pid (pids[i]); - if (err == ESRCH) - /* The process died already. Ignore it. */ - err = 0; - } - if (pids != pidbuf) - __vm_deallocate (__mach_task_self (), - (vm_address_t) pids, npids * sizeof (pids[0])); - } - } - else - kill_pid (pid); - - _hurd_port_free (&_hurd_ports[INIT_PORT_PROC], &ulink, proc); - - /* If we delivered no signals, but ERR is clear, this must mean that - every kill_pid call failed with ESRCH, meaning all the processes in - the pgrp died between proc_getpgrppids and kill_pid; in that case we - fail with ESRCH. */ - return delivered ? 0 : __hurd_fail (err ?: ESRCH); -} - -weak_alias (__kill, kill) |