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[Qemu-devel] [PATCH v2 06/19] linux-user: Use safe_syscall for sigsuspen
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH v2 06/19] linux-user: Use safe_syscall for sigsuspend syscalls |
Date: |
Fri, 27 May 2016 15:51:48 +0100 |
Use the safe_syscall wrapper for sigsuspend syscalls. This
means that we will definitely deliver a signal that arrives
before we do the sigsuspend call, rather than blocking first
and delivering afterwards.
Signed-off-by: Peter Maydell <address@hidden>
---
linux-user/syscall.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index e4b7404..083f26f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -703,6 +703,7 @@ safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds,
fd_set *, writefds, \
fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
const struct timespec *,timeout,int *,uaddr2,int,val3)
+safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
static inline int host_to_target_sock_type(int host_type)
{
@@ -7007,7 +7008,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
target_to_host_old_sigset(&set, p);
unlock_user(p, arg1, 0);
#endif
- ret = get_errno(sigsuspend(&set));
+ ret = get_errno(safe_rt_sigsuspend(&set, SIGSET_T_SIZE));
}
break;
#endif
@@ -7018,7 +7019,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
goto efault;
target_to_host_sigset(&set, p);
unlock_user(p, arg1, 0);
- ret = get_errno(sigsuspend(&set));
+ ret = get_errno(safe_rt_sigsuspend(&set, SIGSET_T_SIZE));
}
break;
case TARGET_NR_rt_sigtimedwait:
--
1.9.1
- [Qemu-devel] [PATCH v2 16/19] linux-user: Restart fork() if signals pending, (continued)
- [Qemu-devel] [PATCH v2 16/19] linux-user: Restart fork() if signals pending, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 18/19] linux-user: Avoid possible misalignment in host_to_target_siginfo(), Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 14/19] linux-user: Restart exit() if signal pending, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 11/19] linux-user: Queue synchronous signals separately, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 12/19] linux-user: Block signals during sigaction() handling, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 13/19] linux-user: pause() should not pause if signal pending, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 03/19] linux-user: Fix stray tab-indent, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 09/19] linux-user: Remove redundant gdb_queuesig(), Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 08/19] linux-user: Remove redundant default action check in queue_signal(), Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 10/19] linux-user: Remove real-time signal queuing, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 06/19] linux-user: Use safe_syscall for sigsuspend syscalls,
Peter Maydell <=
- [Qemu-devel] [PATCH v2 05/19] linux-user: Define macro for size of host kernel sigset_t, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 07/19] linux-user: Fix race between multiple signals, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 02/19] linux-user: Move handle_pending_signal() to avoid need for declaration, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 01/19] linux-user: Factor out handle_signal code from process_pending_signals(), Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 04/19] linux-user: Factor out uses of do_sigprocmask() from sigreturn code, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 15/19] linux-user: Use safe_syscall for kill, tkill and tgkill syscalls, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 17/19] linux-user: Use both si_code and si_signo when converting siginfo_t, Peter Maydell, 2016/05/27
- [Qemu-devel] [PATCH v2 19/19] linux-user: Avoid possible misalignment in target_to_host_siginfo(), Peter Maydell, 2016/05/27