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[PATCH] uml: move libc-dependent code from signal_user.c
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from signal_user.c file under os-Linux dir Signed-off-by: Gennady Sharapov <Gennady.V.Sharapov@intel.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
parent
b2de464f7f
commit
0805d89c15
@ -51,8 +51,6 @@ extern void timer_handler(int sig, union uml_pt_regs *regs);
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extern int set_signals(int enable);
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extern void force_sigbus(void);
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extern int pid_to_processor_id(int pid);
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extern void block_signals(void);
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extern void unblock_signals(void);
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extern void deliver_signals(void *t);
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extern int next_syscall_index(int max);
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extern int next_trap_index(int max);
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@ -219,4 +219,14 @@ extern int umid_file_name(char *name, char *buf, int len);
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extern int set_umid(char *name);
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extern char *get_umid(void);
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/* signal.c */
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extern void set_sigstack(void *sig_stack, int size);
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extern void remove_sigstack(void);
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extern void set_handler(int sig, void (*handler)(int), int flags, ...);
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extern int change_sig(int signal, int on);
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extern void block_signals(void);
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extern void unblock_signals(void);
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extern int get_signals(void);
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extern int set_signals(int enable);
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#endif
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@ -1,28 +0,0 @@
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/*
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* Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#ifndef __SIGNAL_USER_H__
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#define __SIGNAL_USER_H__
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extern int signal_stack_size;
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extern int change_sig(int signal, int on);
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extern void set_sigstack(void *stack, int size);
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extern void set_handler(int sig, void (*handler)(int), int flags, ...);
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extern int set_signals(int enable);
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extern int get_signals(void);
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#endif
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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@ -9,7 +9,7 @@ clean-files :=
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obj-y = config.o exec_kern.o exitcode.o \
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init_task.o irq.o irq_user.o ksyms.o mem.o physmem.o \
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process_kern.o ptrace.o reboot.o resource.o sigio_user.o sigio_kern.o \
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signal_kern.o signal_user.o smp.o syscall_kern.o sysrq.o time.o \
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signal_kern.o smp.o syscall_kern.o sysrq.o time.o \
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time_kern.o tlb.o trap_kern.o trap_user.o uaccess.o um_arch.o umid.o \
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user_util.o
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@ -15,7 +15,6 @@
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#include "kern_util.h"
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#include "user.h"
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#include "process.h"
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#include "signal_user.h"
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#include "sigio.h"
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#include "irq_user.h"
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#include "os.h"
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@ -36,7 +36,6 @@
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#include "kern_util.h"
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#include "kern.h"
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#include "signal_kern.h"
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#include "signal_user.h"
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#include "init.h"
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#include "irq_user.h"
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#include "mem_user.h"
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@ -22,7 +22,6 @@
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#include "asm/ucontext.h"
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#include "kern_util.h"
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#include "signal_kern.h"
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#include "signal_user.h"
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#include "kern.h"
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#include "frame_kern.h"
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#include "sigcontext.h"
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@ -1,157 +0,0 @@
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/*
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* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <string.h>
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#include <sys/mman.h>
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#include "user_util.h"
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#include "kern_util.h"
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#include "user.h"
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#include "signal_user.h"
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#include "signal_kern.h"
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#include "sysdep/sigcontext.h"
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#include "sigcontext.h"
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void set_sigstack(void *sig_stack, int size)
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{
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stack_t stack = ((stack_t) { .ss_flags = 0,
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.ss_sp = (__ptr_t) sig_stack,
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.ss_size = size - sizeof(void *) });
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if(sigaltstack(&stack, NULL) != 0)
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panic("enabling signal stack failed, errno = %d\n", errno);
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}
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void set_handler(int sig, void (*handler)(int), int flags, ...)
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{
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struct sigaction action;
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va_list ap;
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int mask;
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va_start(ap, flags);
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action.sa_handler = handler;
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sigemptyset(&action.sa_mask);
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while((mask = va_arg(ap, int)) != -1){
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sigaddset(&action.sa_mask, mask);
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}
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va_end(ap);
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action.sa_flags = flags;
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action.sa_restorer = NULL;
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if(sigaction(sig, &action, NULL) < 0)
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panic("sigaction failed");
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}
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int change_sig(int signal, int on)
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{
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sigset_t sigset, old;
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sigemptyset(&sigset);
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sigaddset(&sigset, signal);
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sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, &old);
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return(!sigismember(&old, signal));
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}
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/* Both here and in set/get_signal we don't touch SIGPROF, because we must not
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* disable profiling; it's safe because the profiling code does not interact
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* with the kernel code at all.*/
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static void change_signals(int type)
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{
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sigset_t mask;
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sigemptyset(&mask);
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sigaddset(&mask, SIGVTALRM);
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sigaddset(&mask, SIGALRM);
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sigaddset(&mask, SIGIO);
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if(sigprocmask(type, &mask, NULL) < 0)
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panic("Failed to change signal mask - errno = %d", errno);
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}
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void block_signals(void)
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{
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change_signals(SIG_BLOCK);
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}
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void unblock_signals(void)
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{
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change_signals(SIG_UNBLOCK);
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}
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/* These are the asynchronous signals. SIGVTALRM and SIGARLM are handled
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* together under SIGVTALRM_BIT. SIGPROF is excluded because we want to
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* be able to profile all of UML, not just the non-critical sections. If
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* profiling is not thread-safe, then that is not my problem. We can disable
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* profiling when SMP is enabled in that case.
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*/
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#define SIGIO_BIT 0
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#define SIGVTALRM_BIT 1
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static int enable_mask(sigset_t *mask)
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{
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int sigs;
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sigs = sigismember(mask, SIGIO) ? 0 : 1 << SIGIO_BIT;
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sigs |= sigismember(mask, SIGVTALRM) ? 0 : 1 << SIGVTALRM_BIT;
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sigs |= sigismember(mask, SIGALRM) ? 0 : 1 << SIGVTALRM_BIT;
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return(sigs);
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}
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int get_signals(void)
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{
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sigset_t mask;
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if(sigprocmask(SIG_SETMASK, NULL, &mask) < 0)
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panic("Failed to get signal mask");
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return(enable_mask(&mask));
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}
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int set_signals(int enable)
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{
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sigset_t mask;
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int ret;
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sigemptyset(&mask);
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if(enable & (1 << SIGIO_BIT))
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sigaddset(&mask, SIGIO);
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if(enable & (1 << SIGVTALRM_BIT)){
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sigaddset(&mask, SIGVTALRM);
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sigaddset(&mask, SIGALRM);
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}
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/* This is safe - sigprocmask is guaranteed to copy locally the
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* value of new_set, do his work and then, at the end, write to
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* old_set.
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*/
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if(sigprocmask(SIG_UNBLOCK, &mask, &mask) < 0)
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panic("Failed to enable signals");
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ret = enable_mask(&mask);
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sigemptyset(&mask);
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if((enable & (1 << SIGIO_BIT)) == 0)
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sigaddset(&mask, SIGIO);
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if((enable & (1 << SIGVTALRM_BIT)) == 0){
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sigaddset(&mask, SIGVTALRM);
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sigaddset(&mask, SIGALRM);
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}
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if(sigprocmask(SIG_BLOCK, &mask, NULL) < 0)
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panic("Failed to block signals");
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return(ret);
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}
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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@ -22,7 +22,6 @@ extern int start_idle_thread(void *stack, void *switch_buf_ptr,
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extern int user_thread(unsigned long stack, int flags);
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extern void userspace(union uml_pt_regs *regs);
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extern void new_thread_proc(void *stack, void (*handler)(int sig));
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extern void remove_sigstack(void);
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extern void new_thread_handler(int sig);
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extern void handle_syscall(union uml_pt_regs *regs);
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extern int map(struct mm_id * mm_idp, unsigned long virt,
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@ -31,7 +31,6 @@
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#include "proc_mm.h"
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#include "skas_ptrace.h"
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#include "chan_user.h"
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#include "signal_user.h"
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#include "registers.h"
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#include "mem.h"
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#include "uml-config.h"
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@ -514,16 +513,6 @@ int start_idle_thread(void *stack, void *switch_buf_ptr, void **fork_buf_ptr)
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siglongjmp(**switch_buf, 1);
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}
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void remove_sigstack(void)
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{
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stack_t stack = ((stack_t) { .ss_flags = SS_DISABLE,
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.ss_sp = NULL,
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.ss_size = 0 });
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if(sigaltstack(&stack, NULL) != 0)
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panic("disabling signal stack failed, errno = %d\n", errno);
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}
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void initial_thread_cb_skas(void (*proc)(void *), void *arg)
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{
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sigjmp_buf here;
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@ -14,7 +14,6 @@
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#include "asm/atomic.h"
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#include "kern_util.h"
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#include "time_user.h"
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#include "signal_user.h"
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#include "skas.h"
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#include "os.h"
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#include "user_util.h"
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@ -5,7 +5,6 @@
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#include <signal.h>
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#include <errno.h>
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#include "signal_user.h"
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#include "user_util.h"
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#include "kern_util.h"
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#include "task.h"
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@ -14,6 +13,7 @@
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#include "ptrace_user.h"
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#include "sysdep/ptrace.h"
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#include "sysdep/ptrace_user.h"
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#include "os.h"
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void sig_handler_common_skas(int sig, void *sc_ptr)
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{
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@ -14,9 +14,9 @@
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#include "kern_util.h"
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#include "user.h"
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#include "process.h"
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#include "signal_user.h"
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#include "time_user.h"
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#include "kern_constants.h"
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#include "os.h"
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/* XXX This really needs to be declared and initialized in a kernel file since
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* it's in <linux/time.h>
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@ -17,7 +17,6 @@
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#include "sigcontext.h"
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#include "sysdep/sigcontext.h"
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#include "irq_user.h"
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#include "signal_user.h"
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#include "time_user.h"
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#include "task.h"
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#include "mode.h"
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@ -14,7 +14,6 @@
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#include "kern_util.h"
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#include "irq_user.h"
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#include "time_user.h"
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#include "signal_user.h"
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#include "mem_user.h"
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#include "os.h"
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#include "tlb.h"
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@ -13,7 +13,6 @@
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#include "asm/ptrace.h"
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#include "asm/tlbflush.h"
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#include "irq_user.h"
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#include "signal_user.h"
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#include "kern_util.h"
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#include "user_util.h"
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#include "os.h"
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@ -19,7 +19,6 @@
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#include "sigcontext.h"
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#include "sysdep/sigcontext.h"
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#include "os.h"
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#include "signal_user.h"
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#include "user_util.h"
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#include "mem_user.h"
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#include "process.h"
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@ -8,11 +8,11 @@
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#include <signal.h>
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#include "sysdep/ptrace.h"
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#include "sysdep/sigcontext.h"
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#include "signal_user.h"
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#include "user_util.h"
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#include "kern_util.h"
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#include "task.h"
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#include "tt.h"
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#include "os.h"
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void sig_handler_common_tt(int sig, void *sc_ptr)
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{
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@ -16,7 +16,6 @@
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#include "user_util.h"
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#include "kern_util.h"
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#include "mem_user.h"
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#include "signal_user.h"
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#include "time_user.h"
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#include "irq_user.h"
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#include "user.h"
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#include "os.h"
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#include "user.h"
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#include "user_util.h"
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#include "signal_user.h"
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#include "process.h"
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#include "irq_user.h"
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#include "kern_util.h"
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@ -4,9 +4,22 @@
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*/
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#include <signal.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <string.h>
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#include <sys/mman.h>
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#include "user_util.h"
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#include "kern_util.h"
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#include "user.h"
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#include "signal_kern.h"
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#include "sysdep/sigcontext.h"
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#include "sysdep/signal.h"
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#include "sigcontext.h"
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#include "time_user.h"
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#include "mode.h"
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#include "sysdep/signal.h"
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void sig_handler(ARCH_SIGHDLR_PARAM)
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{
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@ -36,13 +49,138 @@ void alarm_handler(ARCH_SIGHDLR_PARAM)
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switch_timers(1);
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}
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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void set_sigstack(void *sig_stack, int size)
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{
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stack_t stack = ((stack_t) { .ss_flags = 0,
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.ss_sp = (__ptr_t) sig_stack,
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.ss_size = size - sizeof(void *) });
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if(sigaltstack(&stack, NULL) != 0)
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panic("enabling signal stack failed, errno = %d\n", errno);
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}
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void remove_sigstack(void)
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{
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stack_t stack = ((stack_t) { .ss_flags = SS_DISABLE,
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.ss_sp = NULL,
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.ss_size = 0 });
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if(sigaltstack(&stack, NULL) != 0)
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panic("disabling signal stack failed, errno = %d\n", errno);
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}
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void set_handler(int sig, void (*handler)(int), int flags, ...)
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{
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struct sigaction action;
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va_list ap;
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int mask;
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va_start(ap, flags);
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action.sa_handler = handler;
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sigemptyset(&action.sa_mask);
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while((mask = va_arg(ap, int)) != -1){
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sigaddset(&action.sa_mask, mask);
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}
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va_end(ap);
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action.sa_flags = flags;
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action.sa_restorer = NULL;
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if(sigaction(sig, &action, NULL) < 0)
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panic("sigaction failed");
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}
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int change_sig(int signal, int on)
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{
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sigset_t sigset, old;
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sigemptyset(&sigset);
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sigaddset(&sigset, signal);
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sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, &old);
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return(!sigismember(&old, signal));
|
||||
}
|
||||
|
||||
/* Both here and in set/get_signal we don't touch SIGPROF, because we must not
|
||||
* disable profiling; it's safe because the profiling code does not interact
|
||||
* with the kernel code at all.*/
|
||||
|
||||
static void change_signals(int type)
|
||||
{
|
||||
sigset_t mask;
|
||||
|
||||
sigemptyset(&mask);
|
||||
sigaddset(&mask, SIGVTALRM);
|
||||
sigaddset(&mask, SIGALRM);
|
||||
sigaddset(&mask, SIGIO);
|
||||
if(sigprocmask(type, &mask, NULL) < 0)
|
||||
panic("Failed to change signal mask - errno = %d", errno);
|
||||
}
|
||||
|
||||
void block_signals(void)
|
||||
{
|
||||
change_signals(SIG_BLOCK);
|
||||
}
|
||||
|
||||
void unblock_signals(void)
|
||||
{
|
||||
change_signals(SIG_UNBLOCK);
|
||||
}
|
||||
|
||||
/* These are the asynchronous signals. SIGVTALRM and SIGARLM are handled
|
||||
* together under SIGVTALRM_BIT. SIGPROF is excluded because we want to
|
||||
* be able to profile all of UML, not just the non-critical sections. If
|
||||
* profiling is not thread-safe, then that is not my problem. We can disable
|
||||
* profiling when SMP is enabled in that case.
|
||||
*/
|
||||
#define SIGIO_BIT 0
|
||||
#define SIGVTALRM_BIT 1
|
||||
|
||||
static int enable_mask(sigset_t *mask)
|
||||
{
|
||||
int sigs;
|
||||
|
||||
sigs = sigismember(mask, SIGIO) ? 0 : 1 << SIGIO_BIT;
|
||||
sigs |= sigismember(mask, SIGVTALRM) ? 0 : 1 << SIGVTALRM_BIT;
|
||||
sigs |= sigismember(mask, SIGALRM) ? 0 : 1 << SIGVTALRM_BIT;
|
||||
return(sigs);
|
||||
}
|
||||
|
||||
int get_signals(void)
|
||||
{
|
||||
sigset_t mask;
|
||||
|
||||
if(sigprocmask(SIG_SETMASK, NULL, &mask) < 0)
|
||||
panic("Failed to get signal mask");
|
||||
return(enable_mask(&mask));
|
||||
}
|
||||
|
||||
int set_signals(int enable)
|
||||
{
|
||||
sigset_t mask;
|
||||
int ret;
|
||||
|
||||
sigemptyset(&mask);
|
||||
if(enable & (1 << SIGIO_BIT))
|
||||
sigaddset(&mask, SIGIO);
|
||||
if(enable & (1 << SIGVTALRM_BIT)){
|
||||
sigaddset(&mask, SIGVTALRM);
|
||||
sigaddset(&mask, SIGALRM);
|
||||
}
|
||||
|
||||
/* This is safe - sigprocmask is guaranteed to copy locally the
|
||||
* value of new_set, do his work and then, at the end, write to
|
||||
* old_set.
|
||||
*/
|
||||
if(sigprocmask(SIG_UNBLOCK, &mask, &mask) < 0)
|
||||
panic("Failed to enable signals");
|
||||
ret = enable_mask(&mask);
|
||||
sigemptyset(&mask);
|
||||
if((enable & (1 << SIGIO_BIT)) == 0)
|
||||
sigaddset(&mask, SIGIO);
|
||||
if((enable & (1 << SIGVTALRM_BIT)) == 0){
|
||||
sigaddset(&mask, SIGVTALRM);
|
||||
sigaddset(&mask, SIGALRM);
|
||||
}
|
||||
if(sigprocmask(SIG_BLOCK, &mask, NULL) < 0)
|
||||
panic("Failed to block signals");
|
||||
|
||||
return(ret);
|
||||
}
|
||||
|
@ -24,7 +24,6 @@
|
||||
#include "kern_util.h"
|
||||
#include "user.h"
|
||||
#include "signal_kern.h"
|
||||
#include "signal_user.h"
|
||||
#include "sysdep/ptrace.h"
|
||||
#include "sysdep/sigcontext.h"
|
||||
#include "irq_user.h"
|
||||
|
@ -23,7 +23,6 @@
|
||||
#include "kern_util.h"
|
||||
#include "user.h"
|
||||
#include "signal_kern.h"
|
||||
#include "signal_user.h"
|
||||
#include "sysdep/ptrace.h"
|
||||
#include "sysdep/sigcontext.h"
|
||||
#include "irq_user.h"
|
||||
|
@ -10,7 +10,6 @@
|
||||
#include "asm/uaccess.h"
|
||||
#include "asm/unistd.h"
|
||||
#include "frame_kern.h"
|
||||
#include "signal_user.h"
|
||||
#include "sigcontext.h"
|
||||
#include "registers.h"
|
||||
#include "mode.h"
|
||||
|
Loading…
Reference in New Issue
Block a user