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authorAl Viro <viro@ftp.linux.org.uk>2011-08-18 23:05:09 +0400
committerRichard Weinberger <richard@nod.at>2011-11-02 17:14:59 +0400
commit248b74c79ebb9fb55e146797a808836d90418c4b (patch)
tree2d043bee58d2d8995ca4ccedf9d00513a13297cb /arch/um/os-Linux/signal.c
parent05c46db4d7d51af969e09f9f1adbff66ee2e84b4 (diff)
downloadlinux-248b74c79ebb9fb55e146797a808836d90418c4b.tar.xz
um: start switching the references to host mcontext_t to its userland type
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/os-Linux/signal.c')
-rw-r--r--arch/um/os-Linux/signal.c35
1 files changed, 16 insertions, 19 deletions
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 08d306176995..07d9905e44ef 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -26,7 +26,7 @@ void (*sig_info[NSIG])(int, struct uml_pt_regs *) = {
[SIGIO] = sigio_handler,
[SIGVTALRM] = timer_handler };
-static void sig_handler_common(int sig, struct sigcontext *sc)
+static void sig_handler_common(int sig, mcontext_t *mc)
{
struct uml_pt_regs r;
int save_errno = errno;
@@ -34,8 +34,8 @@ static void sig_handler_common(int sig, struct sigcontext *sc)
r.is_user = 0;
if (sig == SIGSEGV) {
/* For segfaults, we want the data from the sigcontext. */
- copy_sc(&r, sc);
- GET_FAULTINFO_FROM_SC(r.faultinfo, sc);
+ copy_sc(&r, (struct sigcontext *)mc);
+ GET_FAULTINFO_FROM_MC(r.faultinfo, mc);
}
/* enable signals if sig isn't IRQ signal */
@@ -62,7 +62,7 @@ static void sig_handler_common(int sig, struct sigcontext *sc)
static int signals_enabled;
static unsigned int signals_pending;
-void sig_handler(int sig, struct sigcontext *sc)
+void sig_handler(int sig, mcontext_t *mc)
{
int enabled;
@@ -74,23 +74,23 @@ void sig_handler(int sig, struct sigcontext *sc)
block_signals();
- sig_handler_common(sig, sc);
+ sig_handler_common(sig, mc);
set_signals(enabled);
}
-static void real_alarm_handler(struct sigcontext *sc)
+static void real_alarm_handler(mcontext_t *mc)
{
struct uml_pt_regs regs;
- if (sc != NULL)
- copy_sc(&regs, sc);
+ if (mc != NULL)
+ copy_sc(&regs, (struct sigcontext *)mc);
regs.is_user = 0;
unblock_signals();
timer_handler(SIGVTALRM, &regs);
}
-void alarm_handler(int sig, struct sigcontext *sc)
+void alarm_handler(int sig, mcontext_t *mc)
{
int enabled;
@@ -102,7 +102,7 @@ void alarm_handler(int sig, struct sigcontext *sc)
block_signals();
- real_alarm_handler(sc);
+ real_alarm_handler(mc);
set_signals(enabled);
}
@@ -121,7 +121,7 @@ void set_sigstack(void *sig_stack, int size)
panic("enabling signal stack failed, errno = %d\n", errno);
}
-static void (*handlers[_NSIG])(int sig, struct sigcontext *sc) = {
+static void (*handlers[_NSIG])(int sig, mcontext_t *mc) = {
[SIGSEGV] = sig_handler,
[SIGBUS] = sig_handler,
[SIGILL] = sig_handler,
@@ -133,8 +133,11 @@ static void (*handlers[_NSIG])(int sig, struct sigcontext *sc) = {
[SIGVTALRM] = alarm_handler
};
-static void handle_signal(int sig, struct sigcontext *sc)
+
+static void hard_handler(int sig, siginfo_t *info, void *p)
{
+ struct ucontext *uc = p;
+ mcontext_t *mc = &uc->uc_mcontext;
unsigned long pending = 1UL << sig;
do {
@@ -160,7 +163,7 @@ static void handle_signal(int sig, struct sigcontext *sc)
while ((sig = ffs(pending)) != 0){
sig--;
pending &= ~(1 << sig);
- (*handlers[sig])(sig, sc);
+ (*handlers[sig])(sig, mc);
}
/*
@@ -174,12 +177,6 @@ static void handle_signal(int sig, struct sigcontext *sc)
} while (pending);
}
-static void hard_handler(int sig, siginfo_t *info, void *p)
-{
- struct ucontext *uc = p;
- handle_signal(sig, (struct sigcontext *) &uc->uc_mcontext);
-}
-
void set_handler(int sig)
{
struct sigaction action;