diff options
Diffstat (limited to 'arch/um/os-Linux')
| -rw-r--r-- | arch/um/os-Linux/internal.h | 2 | ||||
| -rw-r--r-- | arch/um/os-Linux/signal.c | 26 | ||||
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 13 | ||||
| -rw-r--r-- | arch/um/os-Linux/time.c | 2 |
4 files changed, 26 insertions, 17 deletions
diff --git a/arch/um/os-Linux/internal.h b/arch/um/os-Linux/internal.h index 2c3c3ecd8c01..0dc2c9f135f6 100644 --- a/arch/um/os-Linux/internal.h +++ b/arch/um/os-Linux/internal.h @@ -1 +1 @@ -void alarm_handler(int, mcontext_t *); +void alarm_handler(int sig, struct siginfo *unused_si, mcontext_t *mc); diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index 2d22f1fcd8e2..6366ce904b9b 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -13,8 +13,9 @@ #include "kern_util.h" #include "os.h" #include "sysdep/mcontext.h" +#include "internal.h" -void (*sig_info[NSIG])(int, struct uml_pt_regs *) = { +void (*sig_info[NSIG])(int, siginfo_t *, struct uml_pt_regs *) = { [SIGTRAP] = relay_signal, [SIGFPE] = relay_signal, [SIGILL] = relay_signal, @@ -24,7 +25,7 @@ void (*sig_info[NSIG])(int, struct uml_pt_regs *) = { [SIGIO] = sigio_handler, [SIGVTALRM] = timer_handler }; -static void sig_handler_common(int sig, mcontext_t *mc) +static void sig_handler_common(int sig, siginfo_t *si, mcontext_t *mc) { struct uml_pt_regs r; int save_errno = errno; @@ -40,7 +41,7 @@ static void sig_handler_common(int sig, mcontext_t *mc) if ((sig != SIGIO) && (sig != SIGWINCH) && (sig != SIGVTALRM)) unblock_signals(); - (*sig_info[sig])(sig, &r); + (*sig_info[sig])(sig, si, &r); errno = save_errno; } @@ -60,7 +61,7 @@ static void sig_handler_common(int sig, mcontext_t *mc) static int signals_enabled; static unsigned int signals_pending; -void sig_handler(int sig, mcontext_t *mc) +void sig_handler(int sig, siginfo_t *si, mcontext_t *mc) { int enabled; @@ -72,7 +73,7 @@ void sig_handler(int sig, mcontext_t *mc) block_signals(); - sig_handler_common(sig, mc); + sig_handler_common(sig, si, mc); set_signals(enabled); } @@ -85,10 +86,10 @@ static void real_alarm_handler(mcontext_t *mc) get_regs_from_mc(®s, mc); regs.is_user = 0; unblock_signals(); - timer_handler(SIGVTALRM, ®s); + timer_handler(SIGVTALRM, NULL, ®s); } -void alarm_handler(int sig, mcontext_t *mc) +void alarm_handler(int sig, struct siginfo *unused_si, mcontext_t *mc) { int enabled; @@ -119,7 +120,7 @@ void set_sigstack(void *sig_stack, int size) panic("enabling signal stack failed, errno = %d\n", errno); } -static void (*handlers[_NSIG])(int sig, mcontext_t *mc) = { +static void (*handlers[_NSIG])(int sig, siginfo_t *si, mcontext_t *mc) = { [SIGSEGV] = sig_handler, [SIGBUS] = sig_handler, [SIGILL] = sig_handler, @@ -132,7 +133,7 @@ static void (*handlers[_NSIG])(int sig, mcontext_t *mc) = { }; -static void hard_handler(int sig, siginfo_t *info, void *p) +static void hard_handler(int sig, siginfo_t *si, void *p) { struct ucontext *uc = p; mcontext_t *mc = &uc->uc_mcontext; @@ -161,7 +162,7 @@ static void hard_handler(int sig, siginfo_t *info, void *p) while ((sig = ffs(pending)) != 0){ sig--; pending &= ~(1 << sig); - (*handlers[sig])(sig, mc); + (*handlers[sig])(sig, si, mc); } /* @@ -273,9 +274,12 @@ void unblock_signals(void) * Deal with SIGIO first because the alarm handler might * schedule, leaving the pending SIGIO stranded until we come * back here. + * + * SIGIO's handler doesn't use siginfo or mcontext, + * so they can be NULL. */ if (save_pending & SIGIO_MASK) - sig_handler_common(SIGIO, NULL); + sig_handler_common(SIGIO, NULL, NULL); if (save_pending & SIGVTALRM_MASK) real_alarm_handler(NULL); diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 2687f1f3a709..d93bb40499f7 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -346,6 +346,7 @@ void userspace(struct uml_pt_regs *regs) int err, status, op, pid = userspace_pid[0]; /* To prevent races if using_sysemu changes under us.*/ int local_using_sysemu; + siginfo_t si; /* Handle any immediate reschedules or signals */ interrupt_end(); @@ -407,13 +408,17 @@ void userspace(struct uml_pt_regs *regs) if (WIFSTOPPED(status)) { int sig = WSTOPSIG(status); + + ptrace(PTRACE_GETSIGINFO, pid, 0, &si); + switch (sig) { case SIGSEGV: if (PTRACE_FULL_FAULTINFO || !ptrace_faultinfo) { get_skas_faultinfo(pid, ®s->faultinfo); - (*sig_info[SIGSEGV])(SIGSEGV, regs); + (*sig_info[SIGSEGV])(SIGSEGV, &si, + regs); } else handle_segv(pid, regs); break; @@ -421,14 +426,14 @@ void userspace(struct uml_pt_regs *regs) handle_trap(pid, regs, local_using_sysemu); break; case SIGTRAP: - relay_signal(SIGTRAP, regs); + relay_signal(SIGTRAP, &si, regs); break; case SIGVTALRM: now = os_nsecs(); if (now < nsecs) break; block_signals(); - (*sig_info[sig])(sig, regs); + (*sig_info[sig])(sig, &si, regs); unblock_signals(); nsecs = timer.it_value.tv_sec * UM_NSEC_PER_SEC + @@ -442,7 +447,7 @@ void userspace(struct uml_pt_regs *regs) case SIGFPE: case SIGWINCH: block_signals(); - (*sig_info[sig])(sig, regs); + (*sig_info[sig])(sig, &si, regs); unblock_signals(); break; default: diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c index 910499d76a67..f60238559af3 100644 --- a/arch/um/os-Linux/time.c +++ b/arch/um/os-Linux/time.c @@ -87,7 +87,7 @@ static int after_sleep_interval(struct timespec *ts) static void deliver_alarm(void) { - alarm_handler(SIGVTALRM, NULL); + alarm_handler(SIGVTALRM, NULL, NULL); } static unsigned long long sleep_time(unsigned long long nsecs) |