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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-29 18:12:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-29 18:12:23 -0700
commita591afc01d9e48affbacb365558a31e53c85af45 (patch)
tree9bb91f4eb94ec69fc4706c4944788ec5f3586063 /net/compat.c
parent820d41cf0cd0e94a5661e093821e2e5c6b36a9d8 (diff)
parent31796ac4e8f0e88f5c10f1ad6dab8f19bebe44a4 (diff)
downloadlinux-a591afc01d9e48affbacb365558a31e53c85af45.tar.gz
Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x32 support for x86-64 from Ingo Molnar: "This tree introduces the X32 binary format and execution mode for x86: 32-bit data space binaries using 64-bit instructions and 64-bit kernel syscalls. This allows applications whose working set fits into a 32 bits address space to make use of 64-bit instructions while using a 32-bit address space with shorter pointers, more compressed data structures, etc." Fix up trivial context conflicts in arch/x86/{Kconfig,vdso/vma.c} * 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (71 commits) x32: Fix alignment fail in struct compat_siginfo x32: Fix stupid ia32/x32 inversion in the siginfo format x32: Add ptrace for x32 x32: Switch to a 64-bit clock_t x32: Provide separate is_ia32_task() and is_x32_task() predicates x86, mtrr: Use explicit sizing and padding for the 64-bit ioctls x86/x32: Fix the binutils auto-detect x32: Warn and disable rather than error if binutils too old x32: Only clear TIF_X32 flag once x32: Make sure TS_COMPAT is cleared for x32 tasks fs: Remove missed ->fds_bits from cessation use of fd_set structs internally fs: Fix close_on_exec pointer in alloc_fdtable x32: Drop non-__vdso weak symbols from the x32 VDSO x32: Fix coding style violations in the x32 VDSO code x32: Add x32 VDSO support x32: Allow x32 to be configured x32: If configured, add x32 system calls to system call tables x32: Handle process creation x32: Signal-related system calls x86: Add #ifdef CONFIG_COMPAT to <asm/sys_ia32.h> ...
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 64b4515a64e..e055708b8ec 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);