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Diffstat (limited to 'net/compat.c')
-rw-r--r--net/compat.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/net/compat.c b/net/compat.c
index 161b7bea1f62..6564720f32b7 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -113,7 +113,7 @@ int get_compat_msghdr(struct msghdr *kmsg,
#define CMSG_COMPAT_FIRSTHDR(msg) \
(((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
- (struct compat_cmsghdr __user *)((msg)->msg_control) : \
+ (struct compat_cmsghdr __user *)((msg)->msg_control_user) : \
(struct compat_cmsghdr __user *)NULL)
#define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
@@ -126,7 +126,7 @@ static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *ms
struct compat_cmsghdr __user *cmsg, int cmsg_len)
{
char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
- if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
+ if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control_user) >
msg->msg_controllen)
return NULL;
return (struct compat_cmsghdr __user *)ptr;
@@ -211,6 +211,7 @@ int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
goto Einval;
/* Ok, looks like we made it. Hook it up and return success. */
+ kmsg->msg_control_is_user = false;
kmsg->msg_control = kcmsg_base;
kmsg->msg_controllen = kcmlen;
return 0;
@@ -225,7 +226,7 @@ Efault:
int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
{
- struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
+ struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control_user;
struct compat_cmsghdr cmhdr;
struct old_timeval32 ctv;
struct old_timespec32 cts[3];
@@ -274,7 +275,7 @@ int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *dat
cmlen = CMSG_COMPAT_SPACE(len);
if (kmsg->msg_controllen < cmlen)
cmlen = kmsg->msg_controllen;
- kmsg->msg_control += cmlen;
+ kmsg->msg_control_user += cmlen;
kmsg->msg_controllen -= cmlen;
return 0;
}
@@ -289,7 +290,7 @@ static int scm_max_fds_compat(struct msghdr *msg)
void scm_detach_fds_compat(struct msghdr *msg, struct scm_cookie *scm)
{
struct compat_cmsghdr __user *cm =
- (struct compat_cmsghdr __user *)msg->msg_control;
+ (struct compat_cmsghdr __user *)msg->msg_control_user;
unsigned int o_flags = (msg->msg_flags & MSG_CMSG_CLOEXEC) ? O_CLOEXEC : 0;
int fdmax = min_t(int, scm_max_fds_compat(msg), scm->fp->count);
int __user *cmsg_data = CMSG_COMPAT_DATA(cm);
@@ -313,7 +314,7 @@ void scm_detach_fds_compat(struct msghdr *msg, struct scm_cookie *scm)
cmlen = CMSG_COMPAT_SPACE(i * sizeof(int));
if (msg->msg_controllen < cmlen)
cmlen = msg->msg_controllen;
- msg->msg_control += cmlen;
+ msg->msg_control_user += cmlen;
msg->msg_controllen -= cmlen;
}
}