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32 results

dax.c

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  • signal.c 101.25 KiB
    /*
     *  linux/kernel/signal.c
     *
     *  Copyright (C) 1991, 1992  Linus Torvalds
     *
     *  1997-11-02  Modified for POSIX.1b signals by Richard Henderson
     *
     *  2003-06-02  Jim Houston - Concurrent Computer Corp.
     *		Changes to use preallocated sigqueue structures
     *		to allow signals to be sent reliably.
     */
    
    #include <linux/slab.h>
    #include <linux/export.h>
    #include <linux/init.h>
    #include <linux/sched/mm.h>
    #include <linux/sched/user.h>
    #include <linux/sched/debug.h>
    #include <linux/sched/task.h>
    #include <linux/sched/task_stack.h>
    #include <linux/sched/cputime.h>
    #include <linux/fs.h>
    #include <linux/tty.h>
    #include <linux/binfmts.h>
    #include <linux/coredump.h>
    #include <linux/security.h>
    #include <linux/syscalls.h>
    #include <linux/ptrace.h>
    #include <linux/signal.h>
    #include <linux/signalfd.h>
    #include <linux/ratelimit.h>
    #include <linux/tracehook.h>
    #include <linux/capability.h>
    #include <linux/freezer.h>
    #include <linux/pid_namespace.h>
    #include <linux/nsproxy.h>
    #include <linux/user_namespace.h>
    #include <linux/uprobes.h>
    #include <linux/compat.h>
    #include <linux/cn_proc.h>
    #include <linux/compiler.h>
    #include <linux/posix-timers.h>
    #include <linux/livepatch.h>
    
    #define CREATE_TRACE_POINTS
    #include <trace/events/signal.h>
    
    #include <asm/param.h>
    #include <linux/uaccess.h>
    #include <asm/unistd.h>
    #include <asm/siginfo.h>
    #include <asm/cacheflush.h>
    #include "audit.h"	/* audit_signal_info() */
    
    /*
     * SLAB caches for signal bits.
     */
    
    static struct kmem_cache *sigqueue_cachep;
    
    int print_fatal_signals __read_mostly;
    
    static void __user *sig_handler(struct task_struct *t, int sig)
    {
    	return t->sighand->action[sig - 1].sa.sa_handler;
    }
    
    static int sig_handler_ignored(void __user *handler, int sig)
    {
    	/* Is it explicitly or implicitly ignored? */