[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH] linux-user: fix special case pwrite64 with count =
From: |
Carlo Marcelo Arenas Belón |
Subject: |
[Qemu-devel] [PATCH] linux-user: fix special case pwrite64 with count = 0 |
Date: |
Sat, 30 Sep 2017 17:34:42 -0700 |
building on the work from Zhuowei Zhang for making write return 0 instead
of -1 when called with: write(fd, NULL, 0)
Signed-off-by: Carlo Marcelo Arenas Belón <address@hidden>
---
linux-user/syscall.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 9b6364a266..89e883f187 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -10509,6 +10509,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
arg4 = arg5;
arg5 = arg6;
}
+ if (arg2 == 0 && arg3 == 0) {
+ ret = get_errno(pwrite64(arg1, NULL, arg3, target_offset64(arg4,
arg5)));
+ break;
+ }
if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
goto efault;
ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
--
2.14.2
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Qemu-devel] [PATCH] linux-user: fix special case pwrite64 with count = 0,
Carlo Marcelo Arenas Belón <=