linux/fs/ext2/xattr_security.c
Rashika Kheria 17cd48e488 fs: Mark function as static in ext2/xattr_security.c
Mark function as static in ext2/xattr_security.c because it is not
used outside this file.

This also elimiantes the following warning in ext2/xattr_security.c:
fs/ext2/xattr_security.c:45:5: warning: no previous prototype for ‘ext2_initxattrs’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Jan Kara <jack@suse.cz>
2014-03-03 11:30:59 +01:00

75 lines
1.9 KiB
C

/*
* linux/fs/ext2/xattr_security.c
* Handler for storing security labels as extended attributes.
*/
#include "ext2.h"
#include <linux/security.h>
#include "xattr.h"
static size_t
ext2_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len, int type)
{
const int prefix_len = XATTR_SECURITY_PREFIX_LEN;
const size_t total_len = prefix_len + name_len + 1;
if (list && total_len <= list_size) {
memcpy(list, XATTR_SECURITY_PREFIX, prefix_len);
memcpy(list+prefix_len, name, name_len);
list[prefix_len + name_len] = '\0';
}
return total_len;
}
static int
ext2_xattr_security_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
if (strcmp(name, "") == 0)
return -EINVAL;
return ext2_xattr_get(dentry->d_inode, EXT2_XATTR_INDEX_SECURITY, name,
buffer, size);
}
static int
ext2_xattr_security_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
{
if (strcmp(name, "") == 0)
return -EINVAL;
return ext2_xattr_set(dentry->d_inode, EXT2_XATTR_INDEX_SECURITY, name,
value, size, flags);
}
static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
void *fs_info)
{
const struct xattr *xattr;
int err = 0;
for (xattr = xattr_array; xattr->name != NULL; xattr++) {
err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY,
xattr->name, xattr->value,
xattr->value_len, 0);
if (err < 0)
break;
}
return err;
}
int
ext2_init_security(struct inode *inode, struct inode *dir,
const struct qstr *qstr)
{
return security_inode_init_security(inode, dir, qstr,
&ext2_initxattrs, NULL);
}
const struct xattr_handler ext2_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.list = ext2_xattr_security_list,
.get = ext2_xattr_security_get,
.set = ext2_xattr_security_set,
};