mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
![Mimi Zohar](/assets/img/avatar_default.png)
The posix xattr acls are 'system' prefixed, which normally would not affect security.evm. An interesting side affect of writing posix xattr acls is their modifying of the i_mode, which is included in security.evm. This patch updates security.evm when posix xattr acls are written. Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
101 lines
3.8 KiB
C
101 lines
3.8 KiB
C
/*
|
|
File: linux/xattr.h
|
|
|
|
Extended attributes handling.
|
|
|
|
Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org>
|
|
Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved.
|
|
Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
|
|
*/
|
|
#ifndef _LINUX_XATTR_H
|
|
#define _LINUX_XATTR_H
|
|
|
|
#define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
|
|
#define XATTR_REPLACE 0x2 /* set value, fail if attr does not exist */
|
|
|
|
/* Namespaces */
|
|
#define XATTR_OS2_PREFIX "os2."
|
|
#define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
|
|
|
|
#define XATTR_SECURITY_PREFIX "security."
|
|
#define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
|
|
|
|
#define XATTR_SYSTEM_PREFIX "system."
|
|
#define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
|
|
|
|
#define XATTR_TRUSTED_PREFIX "trusted."
|
|
#define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
|
|
|
|
#define XATTR_USER_PREFIX "user."
|
|
#define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
|
|
|
|
/* Security namespace */
|
|
#define XATTR_EVM_SUFFIX "evm"
|
|
#define XATTR_NAME_EVM XATTR_SECURITY_PREFIX XATTR_EVM_SUFFIX
|
|
|
|
#define XATTR_SELINUX_SUFFIX "selinux"
|
|
#define XATTR_NAME_SELINUX XATTR_SECURITY_PREFIX XATTR_SELINUX_SUFFIX
|
|
|
|
#define XATTR_SMACK_SUFFIX "SMACK64"
|
|
#define XATTR_SMACK_IPIN "SMACK64IPIN"
|
|
#define XATTR_SMACK_IPOUT "SMACK64IPOUT"
|
|
#define XATTR_SMACK_EXEC "SMACK64EXEC"
|
|
#define XATTR_SMACK_TRANSMUTE "SMACK64TRANSMUTE"
|
|
#define XATTR_SMACK_MMAP "SMACK64MMAP"
|
|
#define XATTR_NAME_SMACK XATTR_SECURITY_PREFIX XATTR_SMACK_SUFFIX
|
|
#define XATTR_NAME_SMACKIPIN XATTR_SECURITY_PREFIX XATTR_SMACK_IPIN
|
|
#define XATTR_NAME_SMACKIPOUT XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT
|
|
#define XATTR_NAME_SMACKEXEC XATTR_SECURITY_PREFIX XATTR_SMACK_EXEC
|
|
#define XATTR_NAME_SMACKTRANSMUTE XATTR_SECURITY_PREFIX XATTR_SMACK_TRANSMUTE
|
|
#define XATTR_NAME_SMACKMMAP XATTR_SECURITY_PREFIX XATTR_SMACK_MMAP
|
|
|
|
#define XATTR_CAPS_SUFFIX "capability"
|
|
#define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX
|
|
|
|
#define XATTR_POSIX_ACL_ACCESS "posix_acl_access"
|
|
#define XATTR_NAME_POSIX_ACL_ACCESS XATTR_SYSTEM_PREFIX XATTR_POSIX_ACL_ACCESS
|
|
#define XATTR_POSIX_ACL_DEFAULT "posix_acl_default"
|
|
#define XATTR_NAME_POSIX_ACL_DEFAULT XATTR_SYSTEM_PREFIX XATTR_POSIX_ACL_DEFAULT
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct inode;
|
|
struct dentry;
|
|
|
|
struct xattr_handler {
|
|
const char *prefix;
|
|
int flags; /* fs private flags passed back to the handlers */
|
|
size_t (*list)(struct dentry *dentry, char *list, size_t list_size,
|
|
const char *name, size_t name_len, int handler_flags);
|
|
int (*get)(struct dentry *dentry, const char *name, void *buffer,
|
|
size_t size, int handler_flags);
|
|
int (*set)(struct dentry *dentry, const char *name, const void *buffer,
|
|
size_t size, int flags, int handler_flags);
|
|
};
|
|
|
|
struct xattr {
|
|
char *name;
|
|
void *value;
|
|
size_t value_len;
|
|
};
|
|
|
|
ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
|
|
ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
|
|
ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
|
|
int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
|
|
int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
|
|
int vfs_removexattr(struct dentry *, const char *);
|
|
|
|
ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
|
|
ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
|
|
int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
|
|
int generic_removexattr(struct dentry *dentry, const char *name);
|
|
ssize_t vfs_getxattr_alloc(struct dentry *dentry, const char *name,
|
|
char **xattr_value, size_t size, gfp_t flags);
|
|
int vfs_xattr_cmp(struct dentry *dentry, const char *xattr_name,
|
|
const char *value, size_t size, gfp_t flags);
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _LINUX_XATTR_H */
|