Contributors: 27
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Linus Torvalds |
277 |
34.41% |
4 |
7.14% |
| Andrew Morton |
134 |
16.65% |
6 |
10.71% |
| Miklos Szeredi |
79 |
9.81% |
1 |
1.79% |
| David Howells |
51 |
6.34% |
2 |
3.57% |
| Dave Hansen |
45 |
5.59% |
1 |
1.79% |
| Frédéric Weisbecker |
43 |
5.34% |
3 |
5.36% |
| Linus Torvalds (pre-git) |
41 |
5.09% |
6 |
10.71% |
| Al Viro |
27 |
3.35% |
7 |
12.50% |
| Jeff Mahoney |
24 |
2.98% |
3 |
5.36% |
| Oleg Drokin |
17 |
2.11% |
1 |
1.79% |
| Hans Reiser |
14 |
1.74% |
1 |
1.79% |
| Jan Kara |
11 |
1.37% |
2 |
3.57% |
| Deepa Dinamani |
6 |
0.75% |
1 |
1.79% |
| Christoph Hellwig |
6 |
0.75% |
3 |
5.36% |
| Christian Brauner |
5 |
0.62% |
3 |
5.36% |
| Chris Mason |
5 |
0.62% |
1 |
1.79% |
| David S. Miller |
4 |
0.50% |
1 |
1.79% |
| Randy Dunlap |
3 |
0.37% |
1 |
1.79% |
| Kirill A. Shutemov |
2 |
0.25% |
1 |
1.79% |
| Jeff Layton |
2 |
0.25% |
1 |
1.79% |
| Jiri Slaby |
2 |
0.25% |
1 |
1.79% |
| Satyam Sharma |
2 |
0.25% |
1 |
1.79% |
| Serge E. Hallyn |
1 |
0.12% |
1 |
1.79% |
| Vladimir V. Saveliev |
1 |
0.12% |
1 |
1.79% |
| Dave Jones |
1 |
0.12% |
1 |
1.79% |
| Fabian Frederick |
1 |
0.12% |
1 |
1.79% |
| Darrick J. Wong |
1 |
0.12% |
1 |
1.79% |
| Total |
805 |
|
56 |
|
/*
* Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
*/
#include <linux/capability.h>
#include <linux/fs.h>
#include <linux/mount.h>
#include "reiserfs.h"
#include <linux/time.h>
#include <linux/uaccess.h>
#include <linux/pagemap.h>
#include <linux/compat.h>
#include <linux/fileattr.h>
int reiserfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
{
struct inode *inode = d_inode(dentry);
if (!reiserfs_attrs(inode->i_sb))
return -ENOTTY;
fileattr_fill_flags(fa, REISERFS_I(inode)->i_attrs);
return 0;
}
int reiserfs_fileattr_set(struct mnt_idmap *idmap,
struct dentry *dentry, struct fileattr *fa)
{
struct inode *inode = d_inode(dentry);
unsigned int flags = fa->flags;
int err;
reiserfs_write_lock(inode->i_sb);
err = -ENOTTY;
if (!reiserfs_attrs(inode->i_sb))
goto unlock;
err = -EOPNOTSUPP;
if (fileattr_has_fsx(fa))
goto unlock;
/*
* Is it quota file? Do not allow user to mess with it
*/
err = -EPERM;
if (IS_NOQUOTA(inode))
goto unlock;
if ((flags & REISERFS_NOTAIL_FL) && S_ISREG(inode->i_mode)) {
err = reiserfs_unpack(inode);
if (err)
goto unlock;
}
sd_attrs_to_i_attrs(flags, inode);
REISERFS_I(inode)->i_attrs = flags;
inode_set_ctime_current(inode);
mark_inode_dirty(inode);
err = 0;
unlock:
reiserfs_write_unlock(inode->i_sb);
return err;
}
/*
* reiserfs_ioctl - handler for ioctl for inode
* supported commands:
* 1) REISERFS_IOC_UNPACK - try to unpack tail from direct item into indirect
* and prevent packing file (argument arg has t
* be non-zero)
* 2) REISERFS_IOC_[GS]ETFLAGS, REISERFS_IOC_[GS]ETVERSION
* 3) That's all for a while ...
*/
long reiserfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct inode *inode = file_inode(filp);
int err = 0;
reiserfs_write_lock(inode->i_sb);
switch (cmd) {
case REISERFS_IOC_UNPACK:
if (S_ISREG(inode->i_mode)) {
if (arg)
err = reiserfs_unpack(inode);
} else
err = -ENOTTY;
break;
/*
* following two cases are taken from fs/ext2/ioctl.c by Remy
* Card (card@masi.ibp.fr)
*/
case REISERFS_IOC_GETVERSION:
err = put_user(inode->i_generation, (int __user *)arg);
break;
case REISERFS_IOC_SETVERSION:
if (!inode_owner_or_capable(&nop_mnt_idmap, inode)) {
err = -EPERM;
break;
}
err = mnt_want_write_file(filp);
if (err)
break;
if (get_user(inode->i_generation, (int __user *)arg)) {
err = -EFAULT;
goto setversion_out;
}
inode_set_ctime_current(inode);
mark_inode_dirty(inode);
setversion_out:
mnt_drop_write_file(filp);
break;
default:
err = -ENOTTY;
}
reiserfs_write_unlock(inode->i_sb);
return err;
}
#ifdef CONFIG_COMPAT
long reiserfs_compat_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
/*
* These are just misnamed, they actually
* get/put from/to user an int
*/
switch (cmd) {
case REISERFS_IOC32_UNPACK:
cmd = REISERFS_IOC_UNPACK;
break;
case REISERFS_IOC32_GETVERSION:
cmd = REISERFS_IOC_GETVERSION;
break;
case REISERFS_IOC32_SETVERSION:
cmd = REISERFS_IOC_SETVERSION;
break;
default:
return -ENOIOCTLCMD;
}
return reiserfs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
}
#endif
int reiserfs_commit_write(struct file *f, struct page *page,
unsigned from, unsigned to);
/*
* reiserfs_unpack
* Function try to convert tail from direct item into indirect.
* It set up nopack attribute in the REISERFS_I(inode)->nopack
*/
int reiserfs_unpack(struct inode *inode)
{
int retval = 0;
int index;
struct page *page;
struct address_space *mapping;
unsigned long write_from;
unsigned long blocksize = inode->i_sb->s_blocksize;
if (inode->i_size == 0) {
REISERFS_I(inode)->i_flags |= i_nopack_mask;
return 0;
}
/* ioctl already done */
if (REISERFS_I(inode)->i_flags & i_nopack_mask) {
return 0;
}
/* we need to make sure nobody is changing the file size beneath us */
{
int depth = reiserfs_write_unlock_nested(inode->i_sb);
inode_lock(inode);
reiserfs_write_lock_nested(inode->i_sb, depth);
}
reiserfs_write_lock(inode->i_sb);
write_from = inode->i_size & (blocksize - 1);
/* if we are on a block boundary, we are already unpacked. */
if (write_from == 0) {
REISERFS_I(inode)->i_flags |= i_nopack_mask;
goto out;
}
/*
* we unpack by finding the page with the tail, and calling
* __reiserfs_write_begin on that page. This will force a
* reiserfs_get_block to unpack the tail for us.
*/
index = inode->i_size >> PAGE_SHIFT;
mapping = inode->i_mapping;
page = grab_cache_page(mapping, index);
retval = -ENOMEM;
if (!page) {
goto out;
}
retval = __reiserfs_write_begin(page, write_from, 0);
if (retval)
goto out_unlock;
/* conversion can change page contents, must flush */
flush_dcache_page(page);
retval = reiserfs_commit_write(NULL, page, write_from, write_from);
REISERFS_I(inode)->i_flags |= i_nopack_mask;
out_unlock:
unlock_page(page);
put_page(page);
out:
inode_unlock(inode);
reiserfs_write_unlock(inode->i_sb);
return retval;
}