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[Qemu-devel] [PATCH 1/3] linux-user: Fix handling of iovec counts
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 1/3] linux-user: Fix handling of iovec counts |
Date: |
Fri, 15 Jul 2016 14:57:26 +0100 |
In the kernel the length of an iovec is generally handled as
an unsigned long, not an integer; fix the parameter to
lock_iovec() accordingly.
Signed-off-by: Peter Maydell <address@hidden>
---
linux-user/syscall.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 9dbd711..8d36d6c 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -2647,7 +2647,7 @@ static abi_long do_getsockopt(int sockfd, int level, int
optname,
}
static struct iovec *lock_iovec(int type, abi_ulong target_addr,
- int count, int copy)
+ abi_ulong count, int copy)
{
struct target_iovec *target_vec;
struct iovec *vec;
@@ -2660,7 +2660,7 @@ static struct iovec *lock_iovec(int type, abi_ulong
target_addr,
errno = 0;
return NULL;
}
- if (count < 0 || count > IOV_MAX) {
+ if (count > IOV_MAX) {
errno = EINVAL;
return NULL;
}
@@ -2735,7 +2735,7 @@ static struct iovec *lock_iovec(int type, abi_ulong
target_addr,
}
static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
- int count, int copy)
+ abi_ulong count, int copy)
{
struct target_iovec *target_vec;
int i;
@@ -2962,7 +2962,7 @@ static abi_long do_sendrecvmsg_locked(int fd, struct
target_msghdr *msgp,
{
abi_long ret, len;
struct msghdr msg;
- int count;
+ abi_ulong count;
struct iovec *vec;
abi_ulong target_vec;
--
1.9.1