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-rw-r--r--arch/um/kernel/signal_user.c157
1 files changed, 0 insertions, 157 deletions
diff --git a/arch/um/kernel/signal_user.c b/arch/um/kernel/signal_user.c
deleted file mode 100644
index 62f457835fb..00000000000
--- a/arch/um/kernel/signal_user.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <errno.h>
-#include <stdarg.h>
-#include <string.h>
-#include <sys/mman.h>
-#include "user_util.h"
-#include "kern_util.h"
-#include "user.h"
-#include "signal_user.h"
-#include "signal_kern.h"
-#include "sysdep/sigcontext.h"
-#include "sigcontext.h"
-
-void set_sigstack(void *sig_stack, int size)
-{
- stack_t stack = ((stack_t) { .ss_flags = 0,
- .ss_sp = (__ptr_t) sig_stack,
- .ss_size = size - sizeof(void *) });
-
- if(sigaltstack(&stack, NULL) != 0)
- panic("enabling signal stack failed, errno = %d\n", errno);
-}
-
-void set_handler(int sig, void (*handler)(int), int flags, ...)
-{
- struct sigaction action;
- va_list ap;
- int mask;
-
- va_start(ap, flags);
- action.sa_handler = handler;
- sigemptyset(&action.sa_mask);
- while((mask = va_arg(ap, int)) != -1){
- sigaddset(&action.sa_mask, mask);
- }
- va_end(ap);
- action.sa_flags = flags;
- action.sa_restorer = NULL;
- if(sigaction(sig, &action, NULL) < 0)
- panic("sigaction failed");
-}
-
-int change_sig(int signal, int on)
-{
- sigset_t sigset, old;
-
- sigemptyset(&sigset);
- sigaddset(&sigset, signal);
- sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, &old);
- 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);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */