iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tile: properly use COMPAT_SYSCALL_DEFINEx

Browse Source 
This was pointed out by Al Viro.  Using the correct wrappers
properly does sign extension as necessary on syscall arguments.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf 2013-03-04 13:37:32 -05:00
parent 5a114b9866
commit 87c319a2c3
1 changed files with 19 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
arch/tile/kernel/compat.c
View File

@ -32,45 +32,48 @@
* adapt the usual convention.
*/
long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high)
COMPAT_SYSCALL_DEFINE4(truncate64, char __user *, filename, u32, dummy,
u32, low, u32, high)
{
return sys_truncate(filename, ((loff_t)high << 32) | low);
}
long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high)
COMPAT_SYSCALL_DEFINE4(ftruncate64, unsigned int, fd, u32, dummy,
u32, low, u32, high)
{
return sys_ftruncate(fd, ((loff_t)high << 32) | low);
}
long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count,
u32 dummy, u32 low, u32 high)
COMPAT_SYSCALL_DEFINE6(pread64, unsigned int, fd, char __user *, ubuf,
size_t, count, u32, dummy, u32, low, u32, high)
{
return sys_pread64(fd, ubuf, count, ((loff_t)high << 32) | low);
}
long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count,
u32 dummy, u32 low, u32 high)
COMPAT_SYSCALL_DEFINE6(pwrite64, unsigned int, fd, char __user *, ubuf,
size_t, count, u32, dummy, u32, low, u32, high)
{
return sys_pwrite64(fd, ubuf, count, ((loff_t)high << 32) | low);
}
long compat_sys_lookup_dcookie(u32 low, u32 high, char __user *buf, size_t len)
COMPAT_SYSCALL_DEFINE4(lookup_dcookie, u32, low, u32, high,
char __user *, buf, size_t, len)
{
return sys_lookup_dcookie(((loff_t)high << 32) | low, buf, len);
}
long compat_sys_sync_file_range2(int fd, unsigned int flags,
u32 offset_lo, u32 offset_hi,
u32 nbytes_lo, u32 nbytes_hi)
COMPAT_SYSCALL_DEFINE6(sync_file_range2, int, fd, unsigned int, flags,
u32, offset_lo, u32, offset_hi,
u32, nbytes_lo, u32, nbytes_hi)
{
return sys_sync_file_range(fd, ((loff_t)offset_hi << 32) | offset_lo,
((loff_t)nbytes_hi << 32) | nbytes_lo,
flags);
}
long compat_sys_fallocate(int fd, int mode,
u32 offset_lo, u32 offset_hi,
u32 len_lo, u32 len_hi)
COMPAT_SYSCALL_DEFINE6(fallocate, int, fd, int, mode,
u32, offset_lo, u32, offset_hi,
u32, len_lo, u32, len_hi)
{
return sys_fallocate(fd, mode, ((loff_t)offset_hi << 32) | offset_lo,
((loff_t)len_hi << 32) | len_lo);
@ -81,9 +84,9 @@ long compat_sys_fallocate(int fd, int mode,
* offset_low as "unsigned long", thus making it possible to pass
* a sign-extended high 32 bits in offset_low.
*/
long compat_sys_llseek(unsigned int fd, unsigned int offset_high,
unsigned int offset_low, loff_t __user * result,
unsigned int origin)
COMPAT_SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned int, offset_high,
unsigned int, offset_low, loff_t __user *, result,
unsigned int, origin)
{
return sys_llseek(fd, offset_high, offset_low, result, origin);
}