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authorNamhyung Kim <namhyung@gmail.com>2011-01-17 00:48:17 +0900
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-21 00:16:08 -0400
commit27a4f7e61e1eb4f18737926f4a66db7c48349fea (patch)
treed2c680038e2b1a3b56b26a4861db0bc0e25cef01 /fs/ioctl.c
parenta44f99c7efdb88fa41128065c9a9445c19894e34 (diff)
downloadlinux-27a4f7e61e1eb4f18737926f4a66db7c48349fea.tar.gz
vfs: cleanup do_vfs_ioctl()
Move declaration of 'inode' to beginning of the function. Since it is referenced directly or indirectly (in case of FIFREEZE/FITHAW/ FS_IOC_FIEMAP) it's not harmful IMHO. And remove unnecessary casts using 'argp' instead. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ioctl.c')
-rw-r--r--fs/ioctl.c21
1 files changed, 8 insertions, 13 deletions
diff --git a/fs/ioctl.c b/fs/ioctl.c
index 1eebeb72b20..1d9b9fcb2db 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -548,6 +548,7 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
{
int error = 0;
int __user *argp = (int __user *)arg;
+ struct inode *inode = filp->f_path.dentry->d_inode;
switch (cmd) {
case FIOCLEX:
@@ -567,13 +568,11 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
break;
case FIOQSIZE:
- if (S_ISDIR(filp->f_path.dentry->d_inode->i_mode) ||
- S_ISREG(filp->f_path.dentry->d_inode->i_mode) ||
- S_ISLNK(filp->f_path.dentry->d_inode->i_mode)) {
- loff_t res =
- inode_get_bytes(filp->f_path.dentry->d_inode);
- error = copy_to_user((loff_t __user *)arg, &res,
- sizeof(res)) ? -EFAULT : 0;
+ if (S_ISDIR(inode->i_mode) || S_ISREG(inode->i_mode) ||
+ S_ISLNK(inode->i_mode)) {
+ loff_t res = inode_get_bytes(inode);
+ error = copy_to_user(argp, &res, sizeof(res)) ?
+ -EFAULT : 0;
} else
error = -ENOTTY;
break;
@@ -590,14 +589,10 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
return ioctl_fiemap(filp, arg);
case FIGETBSZ:
- {
- struct inode *inode = filp->f_path.dentry->d_inode;
- int __user *p = (int __user *)arg;
- return put_user(inode->i_sb->s_blocksize, p);
- }
+ return put_user(inode->i_sb->s_blocksize, argp);
default:
- if (S_ISREG(filp->f_path.dentry->d_inode->i_mode))
+ if (S_ISREG(inode->i_mode))
error = file_ioctl(filp, cmd, arg);
else
error = vfs_ioctl(filp, cmd, arg);