diff options
author | Jeff Dike <jdike@addtoit.com> | 2007-10-16 01:27:00 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:43:05 -0700 |
commit | ba180fd437156f7fd8cfb2fdd021d949eeef08d6 (patch) | |
tree | b9f38b9cdd7a5b1aacf00341d1948314663c5871 /arch/um/os-Linux/signal.c | |
parent | 77bf4400319db9d2a8af6b00c2be6faa0f3d07cb (diff) | |
download | linux-stable-ba180fd437156f7fd8cfb2fdd021d949eeef08d6.tar.gz linux-stable-ba180fd437156f7fd8cfb2fdd021d949eeef08d6.tar.bz2 linux-stable-ba180fd437156f7fd8cfb2fdd021d949eeef08d6.zip |
uml: style fixes pass 3
Formatting changes in the files which have been changed in the course
of folding foo_skas functions into their callers. These include:
copyright updates
header file trimming
style fixes
adding severity to printks
These changes should be entirely non-functional.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/os-Linux/signal.c')
-rw-r--r-- | arch/um/os-Linux/signal.c | 96 |
1 files changed, 51 insertions, 45 deletions
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index 583424b9797d..49c113b576b7 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -1,24 +1,21 @@ /* * Copyright (C) 2004 PathScale, Inc + * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ -#include <signal.h> -#include <stdio.h> -#include <unistd.h> #include <stdlib.h> -#include <errno.h> #include <stdarg.h> -#include <string.h> -#include <sys/mman.h> -#include "user.h" -#include "signal_kern.h" -#include "sysdep/sigcontext.h" -#include "sysdep/barrier.h" -#include "sigcontext.h" +#include <errno.h> +#include <signal.h> +#include <strings.h> #include "os.h" +#include "sysdep/barrier.h" +#include "sysdep/sigcontext.h" +#include "user.h" -/* These are the asynchronous signals. SIGVTALRM and SIGARLM are handled +/* + * 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 @@ -33,7 +30,8 @@ #define SIGALRM_BIT 2 #define SIGALRM_MASK (1 << SIGALRM_BIT) -/* These are used by both the signal handlers and +/* + * These are used by both the signal handlers and * block/unblock_signals. I don't want modifications cached in a * register - they must go straight to memory. */ @@ -45,7 +43,7 @@ void sig_handler(int sig, struct sigcontext *sc) int enabled; enabled = signals_enabled; - if(!enabled && (sig == SIGIO)){ + if (!enabled && (sig == SIGIO)) { pending |= SIGIO_MASK; return; } @@ -61,16 +59,16 @@ static void real_alarm_handler(int sig, struct sigcontext *sc) { struct uml_pt_regs regs; - if(sig == SIGALRM) + if (sig == SIGALRM) switch_timers(0); - if(sc != NULL) + if (sc != NULL) copy_sc(®s, sc); regs.is_user = 0; unblock_signals(); timer_handler(sig, ®s); - if(sig == SIGALRM) + if (sig == SIGALRM) switch_timers(1); } @@ -79,8 +77,8 @@ void alarm_handler(int sig, struct sigcontext *sc) int enabled; enabled = signals_enabled; - if(!signals_enabled){ - if(sig == SIGVTALRM) + if (!signals_enabled) { + if (sig == SIGVTALRM) pending |= SIGVTALRM_MASK; else pending |= SIGALRM_MASK; @@ -99,7 +97,7 @@ void set_sigstack(void *sig_stack, int size) .ss_sp = (__ptr_t) sig_stack, .ss_size = size - sizeof(void *) }); - if(sigaltstack(&stack, NULL) != 0) + if (sigaltstack(&stack, NULL) != 0) panic("enabling signal stack failed, errno = %d\n", errno); } @@ -109,7 +107,7 @@ void remove_sigstack(void) .ss_sp = NULL, .ss_size = 0 }); - if(sigaltstack(&stack, NULL) != 0) + if (sigaltstack(&stack, NULL) != 0) panic("disabling signal stack failed, errno = %d\n", errno); } @@ -133,26 +131,27 @@ void handle_signal(int sig, struct sigcontext *sc) * with this interrupt. */ bail = to_irq_stack(&pending); - if(bail) + if (bail) return; nested = pending & 1; pending &= ~1; - while((sig = ffs(pending)) != 0){ + while ((sig = ffs(pending)) != 0){ sig--; pending &= ~(1 << sig); (*handlers[sig])(sig, sc); } - /* Again, pending comes back with a mask of signals + /* + * Again, pending comes back with a mask of signals * that arrived while tearing down the stack. If this * is non-zero, we just go back, set up the stack * again, and handle the new interrupts. */ - if(!nested) + if (!nested) pending = from_irq_stack(nested); - } while(pending); + } while (pending); } extern void hard_handler(int sig); @@ -170,18 +169,18 @@ void set_handler(int sig, void (*handler)(int), int flags, ...) sigemptyset(&action.sa_mask); va_start(ap, flags); - while((mask = va_arg(ap, int)) != -1) + 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) + if (sigaction(sig, &action, NULL) < 0) panic("sigaction failed - errno = %d\n", errno); sigemptyset(&sig_mask); sigaddset(&sig_mask, sig); - if(sigprocmask(SIG_UNBLOCK, &sig_mask, NULL) < 0) + if (sigprocmask(SIG_UNBLOCK, &sig_mask, NULL) < 0) panic("sigprocmask failed - errno = %d\n", errno); } @@ -192,13 +191,14 @@ int change_sig(int signal, int on) sigemptyset(&sigset); sigaddset(&sigset, signal); sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, &old); - return(!sigismember(&old, signal)); + return !sigismember(&old, signal); } void block_signals(void) { signals_enabled = 0; - /* This must return with signals disabled, so this barrier + /* + * This must return with signals disabled, so this barrier * ensures that writes are flushed out before the return. * This might matter if gcc figures out how to inline this and * decides to shuffle this code into the caller. @@ -210,27 +210,31 @@ void unblock_signals(void) { int save_pending; - if(signals_enabled == 1) + if (signals_enabled == 1) return; - /* We loop because the IRQ handler returns with interrupts off. So, + /* + * We loop because the IRQ handler returns with interrupts off. So, * interrupts may have arrived and we need to re-enable them and * recheck pending. */ - while(1){ - /* Save and reset save_pending after enabling signals. This + while(1) { + /* + * Save and reset save_pending after enabling signals. This * way, pending won't be changed while we're reading it. */ signals_enabled = 1; - /* Setting signals_enabled and reading pending must + /* + * Setting signals_enabled and reading pending must * happen in this order. */ mb(); save_pending = pending; - if(save_pending == 0){ - /* This must return with signals enabled, so + if (save_pending == 0) { + /* + * This must return with signals enabled, so * this barrier ensures that writes are * flushed out before the return. This might * matter if gcc figures out how to inline @@ -243,24 +247,26 @@ void unblock_signals(void) pending = 0; - /* We have pending interrupts, so disable signals, as the + /* + * We have pending interrupts, so disable signals, as the * handlers expect them off when they are called. They will * be enabled again above. */ signals_enabled = 0; - /* Deal with SIGIO first because the alarm handler might + /* + * Deal with SIGIO first because the alarm handler might * schedule, leaving the pending SIGIO stranded until we come * back here. */ - if(save_pending & SIGIO_MASK) + if (save_pending & SIGIO_MASK) sig_handler_common_skas(SIGIO, NULL); - if(save_pending & SIGALRM_MASK) + if (save_pending & SIGALRM_MASK) real_alarm_handler(SIGALRM, NULL); - if(save_pending & SIGVTALRM_MASK) + if (save_pending & SIGVTALRM_MASK) real_alarm_handler(SIGVTALRM, NULL); } } @@ -273,11 +279,11 @@ int get_signals(void) int set_signals(int enable) { int ret; - if(signals_enabled == enable) + if (signals_enabled == enable) return enable; ret = signals_enabled; - if(enable) + if (enable) unblock_signals(); else block_signals(); |