From: Timothy E Baldwin <t.e.baldwi...@members.leeds.ac.uk>
Restart read() and write() if signals occur before, or during with SA_RESTART
Signed-off-by: Timothy Edward Baldwin <t.e.baldwi...@members.leeds.ac.uk>
Message-id: 1441497448-32489-15-git-send-email-t.e.baldwi...@members.leeds.ac.uk
[PMM: Update to new safe_syscall() convention of setting errno]
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Riku Voipio <riku.voi...@linaro.org>
---
linux-user/syscall.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index b6a8ed6..bee1360 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -707,6 +707,9 @@ static type safe_##name(type1 arg1, type2 arg2, type3 arg3,
type4 arg4, \
return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
}
+safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
+safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
+
static inline int host_to_target_sock_type(int host_type)
{
int target_type;
@@ -5983,7 +5986,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
else {
if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
goto efault;
- ret = get_errno(read(arg1, p, arg3));
+ ret = get_errno(safe_read(arg1, p, arg3));
if (ret >= 0 &&
fd_trans_host_to_target_data(arg1)) {
ret = fd_trans_host_to_target_data(arg1)(p, ret);
@@ -5994,7 +5997,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
case TARGET_NR_write:
if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
goto efault;
- ret = get_errno(write(arg1, p, arg3));
+ ret = get_errno(safe_write(arg1, p, arg3));
unlock_user(p, arg2, 0);
break;
#ifdef TARGET_NR_open
--
2.1.4
