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-rw-r--r--fs/compat.c41
1 files changed, 33 insertions, 8 deletions
diff --git a/fs/compat.c b/fs/compat.c
index 19252b97f0c..ca926ad0430 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -92,8 +92,8 @@ COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filena
struct timespec tv[2];
if (t) {
- if (get_compat_timespec(&tv[0], &t[0]) ||
- get_compat_timespec(&tv[1], &t[1]))
+ if (compat_get_timespec(&tv[0], &t[0]) ||
+ compat_get_timespec(&tv[1], &t[1]))
return -EFAULT;
if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT)
@@ -399,12 +399,28 @@ static int put_compat_flock64(struct flock *kfl, struct compat_flock64 __user *u
}
#endif
+static unsigned int
+convert_fcntl_cmd(unsigned int cmd)
+{
+ switch (cmd) {
+ case F_GETLK64:
+ return F_GETLK;
+ case F_SETLK64:
+ return F_SETLK;
+ case F_SETLKW64:
+ return F_SETLKW;
+ }
+
+ return cmd;
+}
+
COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd,
compat_ulong_t, arg)
{
mm_segment_t old_fs;
struct flock f;
long ret;
+ unsigned int conv_cmd;
switch (cmd) {
case F_GETLK:
@@ -441,16 +457,18 @@ COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd,
case F_GETLK64:
case F_SETLK64:
case F_SETLKW64:
+ case F_GETLKP:
+ case F_SETLKP:
+ case F_SETLKPW:
ret = get_compat_flock64(&f, compat_ptr(arg));
if (ret != 0)
break;
old_fs = get_fs();
set_fs(KERNEL_DS);
- ret = sys_fcntl(fd, (cmd == F_GETLK64) ? F_GETLK :
- ((cmd == F_SETLK64) ? F_SETLK : F_SETLKW),
- (unsigned long)&f);
+ conv_cmd = convert_fcntl_cmd(cmd);
+ ret = sys_fcntl(fd, conv_cmd, (unsigned long)&f);
set_fs(old_fs);
- if (cmd == F_GETLK64 && ret == 0) {
+ if ((conv_cmd == F_GETLK || conv_cmd == F_GETLKP) && ret == 0) {
/* need to return lock information - see above for commentary */
if (f.l_start > COMPAT_LOFF_T_MAX)
ret = -EOVERFLOW;
@@ -471,8 +489,15 @@ COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd,
COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd,
compat_ulong_t, arg)
{
- if ((cmd == F_GETLK64) || (cmd == F_SETLK64) || (cmd == F_SETLKW64))
+ switch (cmd) {
+ case F_GETLK64:
+ case F_SETLK64:
+ case F_SETLKW64:
+ case F_GETLKP:
+ case F_SETLKP:
+ case F_SETLKPW:
return -EINVAL;
+ }
return compat_sys_fcntl64(fd, cmd, arg);
}
@@ -505,7 +530,7 @@ COMPAT_SYSCALL_DEFINE5(io_getevents, compat_aio_context_t, ctx_id,
struct timespec __user *ut = NULL;
if (timeout) {
- if (get_compat_timespec(&t, timeout))
+ if (compat_get_timespec(&t, timeout))
return -EFAULT;
ut = compat_alloc_user_space(sizeof(*ut));