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fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls

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This patch adds ioctls to vfs for compatibility with legacy XFS
pre-allocation ioctls (XFS_IOC_*RESVP*). The implementation
effectively invokes sys_fallocate for the new ioctls.
Also handles the compat_ioctl case.
Note: These legacy ioctls are also implemented by OCFS2.

[AV: folded fixes from hch]

Signed-off-by: Ankit Jain <me@ankitjain.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Ankit Jain
2009-06-19 14:28:07 -04:00
committed by Al Viro
parent 01c031945f
commit 3e63cbb1ef
5 changed files with 139 additions and 29 deletions
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6
include/linux/fs.h
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@@ -1906,6 +1906,8 @@ static inline int break_lease(struct inode *inode, unsigned int mode)
extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,
struct file *filp);
extern int do_fallocate(struct file *file, int mode, loff_t offset,
loff_t len);
extern long do_sys_open(int dfd, const char __user *filename, int flags,
int mode);
extern struct file *filp_open(const char *, int, int);
@@ -1914,6 +1916,10 @@ extern struct file * dentry_open(struct dentry *, struct vfsmount *, int,
extern int filp_close(struct file *, fl_owner_t id);
extern char * getname(const char __user *);
/* fs/ioctl.c */
extern int ioctl_preallocate(struct file *filp, void __user *argp);
/* fs/dcache.c */
extern void __init vfs_caches_init_early(void);
extern void __init vfs_caches_init(unsigned long);