diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2009-11-30 17:37:04 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-12-11 06:44:29 -0500 |
| commit | f8b7256096a20436f6d0926747e3ac3d64c81d24 (patch) | |
| tree | 18bcabd1de263bd2d0f8d6b763bde8b037716c5c /arch/sparc/kernel/sys_sparc_64.c | |
| parent | 0067bd8a55862ac9dd212bd1c4f6f5bff1ca1301 (diff) | |
| download | lwn-f8b7256096a20436f6d0926747e3ac3d64c81d24.tar.gz lwn-f8b7256096a20436f6d0926747e3ac3d64c81d24.zip | |
Unify sys_mmap*
New helper - sys_mmap_pgoff(); switch syscalls to using it.
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/sparc/kernel/sys_sparc_64.c')
| -rw-r--r-- | arch/sparc/kernel/sys_sparc_64.c | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index d498b32c75f6..8f9cd58497de 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -572,23 +572,13 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, unsigned long, prot, unsigned long, flags, unsigned long, fd, unsigned long, off) { - struct file * file = NULL; - unsigned long retval = -EBADF; + unsigned long retval = -EINVAL; - if (!(flags & MAP_ANONYMOUS)) { - file = fget(fd); - if (!file) - goto out; - } - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); - len = PAGE_ALIGN(len); - - down_write(¤t->mm->mmap_sem); - retval = do_mmap(file, addr, len, prot, flags, off); - up_write(¤t->mm->mmap_sem); - - if (file) - fput(file); + if ((off + PAGE_ALIGN(len)) < off) + goto out; + if (off & ~PAGE_MASK) + goto out; + retval = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); out: return retval; } |