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[PULL,35/44] linux-user: Use safe_syscall wrapper for sleep syscalls

Message ID 9e518226f431454ce2d4d01051593b32515b3b55.1465392531.git.riku.voipio@linaro.org
State Accepted
Commit 9e518226f431454ce2d4d01051593b32515b3b55
Headers show

Commit Message

Riku Voipio June 8, 2016, 1:30 p.m. UTC 
From: Peter Maydell <peter.maydell@linaro.org>


Use the safe_syscall wrapper for the clock_nanosleep and nanosleep
syscalls.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>

---
 linux-user/syscall.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

-- 
2.1.4
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Patch

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index cecd96c..a931919 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -725,6 +725,12 @@  safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
 safe_syscall2(int, flock, int, fd, int, operation)
 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
               const struct timespec *, uts, size_t, sigsetsize)
+safe_syscall2(int, nanosleep, const struct timespec *, req,
+              struct timespec *, rem)
+#ifdef TARGET_NR_clock_nanosleep
+safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
+              const struct timespec *, req, struct timespec *, rem)
+#endif
 #ifdef __NR_msgsnd
 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
               int, flags)
@@ -9205,7 +9211,7 @@  abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
         {
             struct timespec req, rem;
             target_to_host_timespec(&req, arg1);
-            ret = get_errno(nanosleep(&req, &rem));
+            ret = get_errno(safe_nanosleep(&req, &rem));
             if (is_error(ret) && arg2) {
                 host_to_target_timespec(arg2, &rem);
             }
@@ -10473,14 +10479,15 @@  abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
     {
         struct timespec ts;
         target_to_host_timespec(&ts, arg3);
-        ret = get_errno(clock_nanosleep(arg1, arg2, &ts, arg4 ? &ts : NULL));
+        ret = get_errno(safe_clock_nanosleep(arg1, arg2,
+                                             &ts, arg4 ? &ts : NULL));
         if (arg4)
             host_to_target_timespec(arg4, &ts);
 
 #if defined(TARGET_PPC)
         /* clock_nanosleep is odd in that it returns positive errno values.
          * On PPC, CR0 bit 3 should be set in such a situation. */
-        if (ret) {
+        if (ret && ret != -TARGET_ERESTARTSYS) {
             ((CPUPPCState *)cpu_env)->crf[0] |= 1;
         }
 #endif