summaryrefslogtreecommitdiffstats
path: root/fs/open.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-24 10:03:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-24 10:03:12 -0700
commit936940a9c7e3d99b25859bf1ff140d8c2480183a (patch)
treeddce374cdab91939fef576dbdd4c66d13a9c0299 /fs/open.c
parent09ce42d3167e3f20b501fa780c2415332330fac5 (diff)
parent1cbd20d820c36f52543e3e4cd0067ebf52aa388f (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (23 commits) switch xfs to generic acl caching helpers helpers for acl caching + switch to those switch shmem to inode->i_acl switch reiserfs to inode->i_acl switch reiserfs to usual conventions for caching ACLs reiserfs: minimal fix for ACL caching switch nilfs2 to inode->i_acl switch btrfs to inode->i_acl switch jffs2 to inode->i_acl switch jfs to inode->i_acl switch ext4 to inode->i_acl switch ext3 to inode->i_acl switch ext2 to inode->i_acl add caching of ACLs in struct inode fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls cleanup __writeback_single_inode ... and the same for vfsmount id/mount group id Make allocation of anon devices cheaper update Documentation/filesystems/Locking devpts: remove module-related code ...
Diffstat (limited to 'fs/open.c')
-rw-r--r--fs/open.c58
1 files changed, 29 insertions, 29 deletions
diff --git a/fs/open.c b/fs/open.c
index 7200e23d925..dd98e807602 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -378,63 +378,63 @@ SYSCALL_ALIAS(sys_ftruncate64, SyS_ftruncate64);
#endif
#endif /* BITS_PER_LONG == 32 */
-SYSCALL_DEFINE(fallocate)(int fd, int mode, loff_t offset, loff_t len)
+
+int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
{
- struct file *file;
- struct inode *inode;
- long ret = -EINVAL;
+ struct inode *inode = file->f_path.dentry->d_inode;
+ long ret;
if (offset < 0 || len <= 0)
- goto out;
+ return -EINVAL;
/* Return error if mode is not supported */
- ret = -EOPNOTSUPP;
if (mode && !(mode & FALLOC_FL_KEEP_SIZE))
- goto out;
+ return -EOPNOTSUPP;
- ret = -EBADF;
- file = fget(fd);
- if (!file)
- goto out;
if (!(file->f_mode & FMODE_WRITE))
- goto out_fput;
+ return -EBADF;
/*
* Revalidate the write permissions, in case security policy has
* changed since the files were opened.
*/
ret = security_file_permission(file, MAY_WRITE);
if (ret)
- goto out_fput;
+ return ret;
- inode = file->f_path.dentry->d_inode;
-
- ret = -ESPIPE;
if (S_ISFIFO(inode->i_mode))
- goto out_fput;
+ return -ESPIPE;
- ret = -ENODEV;
/*
* Let individual file system decide if it supports preallocation
* for directories or not.
*/
if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
- goto out_fput;
+ return -ENODEV;
- ret = -EFBIG;
/* Check for wrap through zero too */
if (((offset + len) > inode->i_sb->s_maxbytes) || ((offset + len) < 0))
- goto out_fput;
+ return -EFBIG;
- if (inode->i_op->fallocate)
- ret = inode->i_op->fallocate(inode, mode, offset, len);
- else
- ret = -EOPNOTSUPP;
+ if (!inode->i_op->fallocate)
+ return -EOPNOTSUPP;
-out_fput:
- fput(file);
-out:
- return ret;
+ return inode->i_op->fallocate(inode, mode, offset, len);
}
+
+SYSCALL_DEFINE(fallocate)(int fd, int mode, loff_t offset, loff_t len)
+{
+ struct file *file;
+ int error = -EBADF;
+
+ file = fget(fd);
+ if (file) {
+ error = do_fallocate(file, mode, offset, len);
+ fput(file);
+ }
+
+ return error;
+}
+
#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
asmlinkage long SyS_fallocate(long fd, long mode, loff_t offset, loff_t len)
{