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authorH. J. Lu <hjl.tools@gmail.com>2012-02-19 17:50:46 -0800
committerH. Peter Anvin <hpa@zytor.com>2012-02-20 12:48:48 -0800
commitee4fa23c4bfcc635d077a9633d405610de45bc70 (patch)
tree45cc8cadc91c44dfed9921d03ba36606f80ac072 /net/compat.c
parentda88cea1200b9df65a7811a3920aa5a4be7dab9f (diff)
downloadlinux-ee4fa23c4bfcc635d077a9633d405610de45bc70.tar.gz
compat: Use COMPAT_USE_64BIT_TIME in net/compat.c
Handle 64-bit time structures in the networking core compat code. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/compat.c')
-rw-r--r--net/compat.c65
1 files changed, 40 insertions, 25 deletions
diff --git a/net/compat.c b/net/compat.c
index 6def90e0a11..73bf0e06f3d 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -219,8 +219,6 @@ Efault:
int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
{
- struct compat_timeval ctv;
- struct compat_timespec cts[3];
struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
struct compat_cmsghdr cmhdr;
int cmlen;
@@ -230,24 +228,28 @@ int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *dat
return 0; /* XXX: return error? check spec. */
}
- if (level == SOL_SOCKET && type == SCM_TIMESTAMP) {
- struct timeval *tv = (struct timeval *)data;
- ctv.tv_sec = tv->tv_sec;
- ctv.tv_usec = tv->tv_usec;
- data = &ctv;
- len = sizeof(ctv);
- }
- if (level == SOL_SOCKET &&
- (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) {
- int count = type == SCM_TIMESTAMPNS ? 1 : 3;
- int i;
- struct timespec *ts = (struct timespec *)data;
- for (i = 0; i < count; i++) {
- cts[i].tv_sec = ts[i].tv_sec;
- cts[i].tv_nsec = ts[i].tv_nsec;
+ if (!COMPAT_USE_64BIT_TIME) {
+ struct compat_timeval ctv;
+ struct compat_timespec cts[3];
+ if (level == SOL_SOCKET && type == SCM_TIMESTAMP) {
+ struct timeval *tv = (struct timeval *)data;
+ ctv.tv_sec = tv->tv_sec;
+ ctv.tv_usec = tv->tv_usec;
+ data = &ctv;
+ len = sizeof(ctv);
+ }
+ if (level == SOL_SOCKET &&
+ (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) {
+ int count = type == SCM_TIMESTAMPNS ? 1 : 3;
+ int i;
+ struct timespec *ts = (struct timespec *)data;
+ for (i = 0; i < count; i++) {
+ cts[i].tv_sec = ts[i].tv_sec;
+ cts[i].tv_nsec = ts[i].tv_nsec;
+ }
+ data = &cts;
+ len = sizeof(cts[0]) * count;
}
- data = &cts;
- len = sizeof(cts[0]) * count;
}
cmlen = CMSG_COMPAT_LEN(len);
@@ -454,11 +456,15 @@ static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
{
- struct compat_timeval __user *ctv =
- (struct compat_timeval __user *) userstamp;
- int err = -ENOENT;
+ struct compat_timeval __user *ctv;
+ int err;
struct timeval tv;
+ if (COMPAT_USE_64BIT_TIME)
+ return sock_get_timestamp(sk, userstamp);
+
+ ctv = (struct compat_timeval __user *) userstamp;
+ err = -ENOENT;
if (!sock_flag(sk, SOCK_TIMESTAMP))
sock_enable_timestamp(sk, SOCK_TIMESTAMP);
tv = ktime_to_timeval(sk->sk_stamp);
@@ -478,11 +484,15 @@ EXPORT_SYMBOL(compat_sock_get_timestamp);
int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
{
- struct compat_timespec __user *ctv =
- (struct compat_timespec __user *) userstamp;
- int err = -ENOENT;
+ struct compat_timespec __user *ctv;
+ int err;
struct timespec ts;
+ if (COMPAT_USE_64BIT_TIME)
+ return sock_get_timestampns (sk, userstamp);
+
+ ctv = (struct compat_timespec __user *) userstamp;
+ err = -ENOENT;
if (!sock_flag(sk, SOCK_TIMESTAMP))
sock_enable_timestamp(sk, SOCK_TIMESTAMP);
ts = ktime_to_timespec(sk->sk_stamp);
@@ -767,6 +777,11 @@ asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
int datagrams;
struct timespec ktspec;
+ if (COMPAT_USE_64BIT_TIME)
+ return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
+ flags | MSG_CMSG_COMPAT,
+ (struct timespec *) timeout);
+
if (timeout == NULL)
return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
flags | MSG_CMSG_COMPAT, NULL);