Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cfef8f34e7cf57f3d278ceda79c85112dec13dc6
Commit: cfef8f34e7cf57f3d278ceda79c85112dec13dc6
Parent: d7b88513c504e49d450b0f89f80ba9d451a3c804
Author: Jeff Dike <[EMAIL PROTECTED]>
AuthorDate: Mon Feb 4 22:31:16 2008 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue Feb 5 09:44:30 2008 -0800
uml: signal handling tidying
This patch tidies the signal handling code slightly.
pending is renamed to signals_pending for symmetry with signals_enabled.
remove_sigstack was unused, so can be deleted.
The value of change_sig was never used, so it is now void and the
return value is not calculated any more.
Signed-off-by: Jeff Dike <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
arch/um/os-Linux/signal.c | 33 ++++++++++++---------------------
1 files changed, 12 insertions(+), 21 deletions(-)
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 91a35da..0fb0cc8 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -63,7 +63,7 @@ static void sig_handler_common(int sig, struct sigcontext *sc)
#define SIGVTALRM_MASK (1 << SIGVTALRM_BIT)
static int signals_enabled;
-static unsigned int pending;
+static unsigned int signals_pending;
void sig_handler(int sig, struct sigcontext *sc)
{
@@ -71,7 +71,7 @@ void sig_handler(int sig, struct sigcontext *sc)
enabled = signals_enabled;
if (!enabled && (sig == SIGIO)) {
- pending |= SIGIO_MASK;
+ signals_pending |= SIGIO_MASK;
return;
}
@@ -99,7 +99,7 @@ void alarm_handler(int sig, struct sigcontext *sc)
enabled = signals_enabled;
if (!signals_enabled) {
- pending |= SIGVTALRM_MASK;
+ signals_pending |= SIGVTALRM_MASK;
return;
}
@@ -125,16 +125,6 @@ void set_sigstack(void *sig_stack, int size)
panic("enabling signal stack failed, errno = %d\n", errno);
}
-void remove_sigstack(void)
-{
- stack_t stack = ((stack_t) { .ss_flags = SS_DISABLE,
- .ss_sp = NULL,
- .ss_size = 0 });
-
- if (sigaltstack(&stack, NULL) != 0)
- panic("disabling signal stack failed, errno = %d\n", errno);
-}
-
void (*handlers[_NSIG])(int sig, struct sigcontext *sc);
void handle_signal(int sig, struct sigcontext *sc)
@@ -213,13 +203,14 @@ void set_handler(int sig, void (*handler)(int), int
flags, ...)
int change_sig(int signal, int on)
{
- sigset_t sigset, old;
+ sigset_t sigset;
sigemptyset(&sigset);
sigaddset(&sigset, signal);
- if (sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, &old) < 0)
+ if (sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, NULL) < 0)
return -errno;
- return !sigismember(&old, signal);
+
+ return 0;
}
void block_signals(void)
@@ -244,26 +235,26 @@ void unblock_signals(void)
/*
* 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.
+ * recheck signals_pending.
*/
while(1) {
/*
* Save and reset save_pending after enabling signals. This
- * way, pending won't be changed while we're reading it.
+ * way, signals_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 signals_pending must
* happen in this order.
*/
barrier();
- save_pending = pending;
+ save_pending = signals_pending;
if (save_pending == 0)
return;
- pending = 0;
+ signals_pending = 0;
/*
* We have pending interrupts, so disable signals, as the
-
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