Release 4.18 fs/reiserfs/xattr_security.c
// SPDX-License-Identifier: GPL-2.0
#include "reiserfs.h"
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/xattr.h>
#include <linux/slab.h>
#include "xattr.h"
#include <linux/security.h>
#include <linux/uaccess.h>
static int
security_get(const struct xattr_handler *handler, struct dentry *unused,
struct inode *inode, const char *name, void *buffer, size_t size)
{
if (IS_PRIVATE(inode))
return -EPERM;
return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
buffer, size);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 41 | 66.13% | 1 | 16.67% |
| Al Viro | 13 | 20.97% | 2 | 33.33% |
| Andreas Gruenbacher | 6 | 9.68% | 1 | 16.67% |
| Christoph Hellwig | 1 | 1.61% | 1 | 16.67% |
| Jeff Mahoney | 1 | 1.61% | 1 | 16.67% |
| Total | 62 | 100.00% | 6 | 100.00% |
static int
security_set(const struct xattr_handler *handler, struct dentry *unused,
struct inode *inode, const char *name, const void *buffer,
size_t size, int flags)
{
if (IS_PRIVATE(inode))
return -EPERM;
return reiserfs_xattr_set(inode,
xattr_full_name(handler, name),
buffer, size, flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 47 | 69.12% | 1 | 16.67% |
| Al Viro | 13 | 19.12% | 2 | 33.33% |
| Andreas Gruenbacher | 6 | 8.82% | 1 | 16.67% |
| Christoph Hellwig | 1 | 1.47% | 1 | 16.67% |
| Jeff Mahoney | 1 | 1.47% | 1 | 16.67% |
| Total | 68 | 100.00% | 6 | 100.00% |
static bool security_list(struct dentry *dentry)
{
return !IS_PRIVATE(d_inode(dentry));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 10 | 47.62% | 1 | 16.67% |
| Christoph Hellwig | 3 | 14.29% | 1 | 16.67% |
| Andreas Gruenbacher | 3 | 14.29% | 1 | 16.67% |
| David Howells | 3 | 14.29% | 1 | 16.67% |
| Jeff Mahoney | 2 | 9.52% | 2 | 33.33% |
| Total | 21 | 100.00% | 6 | 100.00% |
/* Initializes the security context for a new inode and returns the number
* of blocks needed for the transaction. If successful, reiserfs_security
* must be released using reiserfs_security_free when the caller is done. */
int reiserfs_security_init(struct inode *dir, struct inode *inode,
const struct qstr *qstr,
struct reiserfs_security_handle *sec)
{
int blocks = 0;
int error;
sec->name = NULL;
/* Don't add selinux attributes on xattrs - they'll never get used */
if (IS_PRIVATE(dir))
return 0;
error = security_old_inode_init_security(inode, dir, qstr, &sec->name,
&sec->value, &sec->length);
if (error) {
if (error == -EOPNOTSUPP)
error = 0;
sec->name = NULL;
sec->value = NULL;
sec->length = 0;
return error;
}
if (sec->length && reiserfs_xattrs_initialized(inode->i_sb)) {
blocks = reiserfs_xattr_jcreate_nblocks(inode) +
reiserfs_xattr_nblocks(inode, sec->length);
/* We don't want to count the directories twice if we have
* a default ACL. */
REISERFS_I(inode)->i_flags |= i_has_xattr_dir;
}
return blocks;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jeff Mahoney | 150 | 94.34% | 3 | 60.00% |
| Eric Paris | 8 | 5.03% | 1 | 20.00% |
| Mimi Zohar | 1 | 0.63% | 1 | 20.00% |
| Total | 159 | 100.00% | 5 | 100.00% |
int reiserfs_security_write(struct reiserfs_transaction_handle *th,
struct inode *inode,
struct reiserfs_security_handle *sec)
{
int error;
if (strlen(sec->name) < sizeof(XATTR_SECURITY_PREFIX))
return -EINVAL;
error = reiserfs_xattr_set_handle(th, inode, sec->name, sec->value,
sec->length, XATTR_CREATE);
if (error == -ENODATA || error == -EOPNOTSUPP)
error = 0;
return error;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jeff Mahoney | 83 | 100.00% | 1 | 100.00% |
| Total | 83 | 100.00% | 1 | 100.00% |
void reiserfs_security_free(struct reiserfs_security_handle *sec)
{
kfree(sec->name);
kfree(sec->value);
sec->name = NULL;
sec->value = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jeff Mahoney | 36 | 100.00% | 1 | 100.00% |
| Total | 36 | 100.00% | 1 | 100.00% |
const struct xattr_handler reiserfs_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.get = security_get,
.set = security_set,
.list = security_list,
};
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jeff Mahoney | 279 | 57.53% | 5 | 22.73% |
| Andrew Morton | 132 | 27.22% | 1 | 4.55% |
| Al Viro | 36 | 7.42% | 6 | 27.27% |
| Andreas Gruenbacher | 15 | 3.09% | 2 | 9.09% |
| Eric Paris | 8 | 1.65% | 1 | 4.55% |
| Christoph Hellwig | 5 | 1.03% | 1 | 4.55% |
| David Howells | 3 | 0.62% | 1 | 4.55% |
| Tejun Heo | 3 | 0.62% | 1 | 4.55% |
| Mimi Zohar | 1 | 0.21% | 1 | 4.55% |
| Greg Kroah-Hartman | 1 | 0.21% | 1 | 4.55% |
| Fabian Frederick | 1 | 0.21% | 1 | 4.55% |
| Stephen Hemminger | 1 | 0.21% | 1 | 4.55% |
| Total | 485 | 100.00% | 22 | 100.00% |
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