diff options
Diffstat (limited to 'usr/src/uts/common/syscall/ssig.c')
| -rw-r--r-- | usr/src/uts/common/syscall/ssig.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/usr/src/uts/common/syscall/ssig.c b/usr/src/uts/common/syscall/ssig.c deleted file mode 100644 index 45e3953bb3..0000000000 --- a/usr/src/uts/common/syscall/ssig.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ - -/* - * Copyright 2009 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ -/* All Rights Reserved */ - -#include <sys/param.h> -#include <sys/types.h> -#include <sys/sysmacros.h> -#include <sys/systm.h> -#include <sys/user.h> -#include <sys/errno.h> -#include <sys/proc.h> -#include <sys/fault.h> -#include <sys/procset.h> -#include <sys/signal.h> -#include <sys/schedctl.h> -#include <sys/debug.h> - - -/* - * ssig() is the old common entry for signal, sigset, sighold, - * sigrelse, sigignore and sigpause. - * - * All of these interfaces have been reimplemented in libc using - * calls to sigaction, sigsuspend and sigprocmask. - * - * This kernel interface is no longer called by any application - * that is dynamically linked with libc. It exists solely for - * the benefit of really old statically-linked applications. - * It should be removed from the system. - */ - -int -ssig(int signo, void (*func)()) -{ - int sig; - struct proc *p; - int flags; - int retval = 0; - int sigcld_look = 0; - - sig = signo & SIGNO_MASK; - - if (sig <= 0 || sig >= NSIG || sigismember(&cantmask, sig)) - return (set_errno(EINVAL)); - - p = ttoproc(curthread); - mutex_enter(&p->p_lock); - schedctl_finish_sigblock(curthread); - switch (signo & ~SIGNO_MASK) { - - case SIGHOLD: /* sighold */ - sigaddset(&curthread->t_hold, sig); - mutex_exit(&p->p_lock); - return (0); - - case SIGRELSE: /* sigrelse */ - sigdelset(&curthread->t_hold, sig); - curthread->t_sig_check = 1; /* so ISSIG will see release */ - mutex_exit(&p->p_lock); - return (0); - - case SIGPAUSE: /* sigpause */ - sigdelset(&curthread->t_hold, sig); - curthread->t_sig_check = 1; /* so ISSIG will see release */ - /* pause() */ - while (cv_wait_sig_swap(&curthread->t_delay_cv, &p->p_lock)) - ; - mutex_exit(&p->p_lock); - return (set_errno(EINTR)); - - case SIGIGNORE: /* signore */ - sigdelset(&curthread->t_hold, sig); - curthread->t_sig_check = 1; /* so ISSIG will see release */ - func = SIG_IGN; - flags = 0; - break; - - case SIGDEFER: /* sigset */ - if (sigismember(&curthread->t_hold, sig)) - retval = (int)SIG_HOLD; - else - retval = (int)(uintptr_t)PTOU(curproc)->u_signal[sig-1]; - if (func == SIG_HOLD) { - sigaddset(&curthread->t_hold, sig); - mutex_exit(&p->p_lock); - return (retval); - } - -#if defined(__sparc) - /* - * Check alignment of handler - */ - if (func != SIG_IGN && func != SIG_DFL && - ((uintptr_t)func & 0x3) != 0) { - mutex_exit(&p->p_lock); - return (set_errno(EINVAL)); - } -#endif - sigdelset(&curthread->t_hold, sig); - curthread->t_sig_check = 1; /* so post_syscall sees it */ - flags = 0; - break; - - case 0: /* signal */ -#if defined(__sparc) - /* - * Check alignment of handler - */ - if (func != SIG_IGN && func != SIG_DFL && - ((uintptr_t)func & 0x3) != 0) { - mutex_exit(&p->p_lock); - return (set_errno(EINVAL)); - } -#endif - retval = (int)(uintptr_t)PTOU(curproc)->u_signal[sig-1]; - flags = SA_RESETHAND|SA_NODEFER; - break; - - default: /* error */ - mutex_exit(&p->p_lock); - return (set_errno(EINVAL)); - } - - if (sigismember(&stopdefault, sig)) - flags |= SA_RESTART; - else if (sig == SIGCLD) { - flags |= SA_NOCLDSTOP; - if (func == SIG_IGN) - flags |= SA_NOCLDWAIT; - sigcld_look = 1; - } - - setsigact(sig, func, nullsmask, flags); - mutex_exit(&p->p_lock); - - if (sigcld_look) - sigcld_repost(); - - return (retval); -} |