c024c3eeb1
mac_check_pipe_poll(), mac_check_pipe_read(), mac_check_pipe_stat(), and mac_check_pipe_write(). This is improves consistency with other access control entry points and permits security modules to only control the object methods that they are interested in, avoiding switch statements. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
384 lines
14 KiB
C
384 lines
14 KiB
C
/*-
|
|
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
|
|
* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Robert Watson for the TrustedBSD Project.
|
|
*
|
|
* This software was developed for the FreeBSD Project in part by NAI Labs,
|
|
* the Security Research Division of Network Associates, Inc. under
|
|
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
|
|
* CHATS research program.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The names of the authors may not be used to endorse or promote
|
|
* products derived from this software without specific prior written
|
|
* permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
/*
|
|
* Userland/kernel interface for Mandatory Access Control.
|
|
*
|
|
* The POSIX.1e implementation page may be reached at:
|
|
* http://www.trustedbsd.org/
|
|
*/
|
|
#ifndef _SYS_MAC_H
|
|
#define _SYS_MAC_H
|
|
|
|
#include <sys/_label.h>
|
|
|
|
#ifndef _POSIX_MAC
|
|
#define _POSIX_MAC
|
|
#endif
|
|
|
|
/*
|
|
* XXXMAC: The single MAC extended attribute will be deprecated once
|
|
* compound EA writes on a single target file can be performed cleanly
|
|
* with UFS2.
|
|
*/
|
|
#define FREEBSD_MAC_EXTATTR_NAME "freebsd.mac"
|
|
#define FREEBSD_MAC_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
|
|
|
|
/*
|
|
* XXXMAC: Per-policy structures will be moved from mac.h to per-policy
|
|
* include files once the revised user interface is available.
|
|
*/
|
|
|
|
/*
|
|
* Structures and constants associated with a Biba Integrity policy.
|
|
* mac_biba represents a Biba label, with mb_type determining its properties,
|
|
* and mb_grade represents the hierarchal grade if valid for the current
|
|
* mb_type. These structures will move to mac_biba.h once we have dymamic
|
|
* labels exposed to userland.
|
|
*/
|
|
struct mac_biba_element {
|
|
u_short mbe_type;
|
|
u_short mbe_grade;
|
|
};
|
|
|
|
/*
|
|
* Biba labels consist of two components: a single label, and a label
|
|
* range. Depending on the context, one or both may be used; the mb_flags
|
|
* field permits the provider to indicate what fields are intended for
|
|
* use.
|
|
*/
|
|
struct mac_biba {
|
|
int mb_flags;
|
|
struct mac_biba_element mb_single;
|
|
struct mac_biba_element mb_rangelow, mb_rangehigh;
|
|
};
|
|
|
|
/*
|
|
* Structures and constants associated with a Multi-Level Security policy.
|
|
* mac_mls represents an MLS label, with mm_type determining its properties,
|
|
* and mm_level represents the hierarchal sensitivity level if valid for the
|
|
* current mm_type. These structures will move to mac_mls.h once we have
|
|
* dynamic labels exposed to userland.
|
|
*/
|
|
struct mac_mls_element {
|
|
u_short mme_type;
|
|
u_short mme_level;
|
|
};
|
|
|
|
/*
|
|
* MLS labels consist of two components: a single label, and a label
|
|
* range. Depending on the context, one or both may be used; the mb_flags
|
|
* field permits the provider to indicate what fields are intended for
|
|
* use.
|
|
*/
|
|
struct mac_mls {
|
|
int mm_flags;
|
|
struct mac_mls_element mm_single;
|
|
struct mac_mls_element mm_rangelow, mm_rangehigh;
|
|
};
|
|
|
|
/*
|
|
* Structures and constants associated with a Type Enforcement policy.
|
|
* mac_te represents a Type Enforcement label.
|
|
*/
|
|
#define MAC_TE_TYPE_MAXLEN 32
|
|
struct mac_te {
|
|
char mt_type[MAC_TE_TYPE_MAXLEN+1]; /* TE type */
|
|
};
|
|
|
|
struct mac_sebsd {
|
|
uint32_t ms_psid; /* persistent sid storage */
|
|
};
|
|
|
|
/*
|
|
* Composite structures and constants which combine the various policy
|
|
* elements into common structures to be associated with subjects and
|
|
* objects.
|
|
*/
|
|
struct mac {
|
|
int m_macflags;
|
|
struct mac_biba m_biba;
|
|
struct mac_mls m_mls;
|
|
struct mac_te m_te;
|
|
struct mac_sebsd m_sebsd;
|
|
};
|
|
typedef struct mac *mac_t;
|
|
|
|
#define MAC_FLAG_INITIALIZED 0x00000001 /* Is initialized. */
|
|
|
|
#ifndef _KERNEL
|
|
|
|
/*
|
|
* POSIX.1e functions visible in the application namespace.
|
|
*/
|
|
int mac_dominate(const mac_t _labela, const mac_t _labelb);
|
|
int mac_equal(const mac_t labela, const mac_t _labelb);
|
|
int mac_free(void *_buf_p);
|
|
mac_t mac_from_text(const char *_text_p);
|
|
mac_t mac_get_fd(int _fildes);
|
|
mac_t mac_get_file(const char *_path_p);
|
|
mac_t mac_get_proc(void);
|
|
mac_t mac_glb(const mac_t _labela, const mac_t _labelb);
|
|
mac_t mac_lub(const mac_t _labela, const mac_t _labelb);
|
|
int mac_set_fd(int _fildes, const mac_t _label);
|
|
int mac_set_file(const char *_path_p, mac_t _label);
|
|
int mac_set_proc(const mac_t _label);
|
|
ssize_t mac_size(mac_t _label);
|
|
char * mac_to_text(const mac_t _label, size_t *_len_p);
|
|
int mac_valid(const mac_t _label);
|
|
|
|
/*
|
|
* Extensions to POSIX.1e visible in the application namespace.
|
|
*/
|
|
int mac_is_present_np(const char *_policyname);
|
|
int mac_policy(const char *_policyname, int call, void *arg);
|
|
|
|
/*
|
|
* System calls wrapped by some POSIX.1e functions.
|
|
*/
|
|
int __mac_get_fd(int _fd, struct mac *_mac_p);
|
|
int __mac_get_file(const char *_path_p, struct mac *_mac_p);
|
|
int __mac_get_proc(struct mac *_mac_p);
|
|
int __mac_set_fd(int fd, struct mac *_mac_p);
|
|
int __mac_set_file(const char *_path_p, struct mac *_mac_p);
|
|
int __mac_set_proc(struct mac *_mac_p);
|
|
|
|
#else /* _KERNEL */
|
|
|
|
/*
|
|
* Kernel functions to manage and evaluate labels.
|
|
*/
|
|
struct bpf_d;
|
|
struct componentname;
|
|
struct devfs_dirent;
|
|
struct ifnet;
|
|
struct ifreq;
|
|
struct ipq;
|
|
struct mbuf;
|
|
struct mount;
|
|
struct proc;
|
|
struct sockaddr;
|
|
struct socket;
|
|
struct pipe;
|
|
struct timespec;
|
|
struct ucred;
|
|
struct uio;
|
|
struct vattr;
|
|
struct vnode;
|
|
|
|
#include <sys/acl.h> /* XXX acl_type_t */
|
|
|
|
struct vop_refreshlabel_args;
|
|
struct vop_setlabel_args;
|
|
|
|
/*
|
|
* Label operations.
|
|
*/
|
|
void mac_init_bpfdesc(struct bpf_d *);
|
|
void mac_init_cred(struct ucred *);
|
|
void mac_init_devfsdirent(struct devfs_dirent *);
|
|
void mac_init_ifnet(struct ifnet *);
|
|
void mac_init_ipq(struct ipq *);
|
|
void mac_init_socket(struct socket *);
|
|
void mac_init_pipe(struct pipe *);
|
|
int mac_init_mbuf(struct mbuf *m, int how);
|
|
void mac_init_mount(struct mount *);
|
|
void mac_init_vnode(struct vnode *);
|
|
void mac_destroy_bpfdesc(struct bpf_d *);
|
|
void mac_destroy_cred(struct ucred *);
|
|
void mac_destroy_devfsdirent(struct devfs_dirent *);
|
|
void mac_destroy_ifnet(struct ifnet *);
|
|
void mac_destroy_ipq(struct ipq *);
|
|
void mac_destroy_socket(struct socket *);
|
|
void mac_destroy_pipe(struct pipe *);
|
|
void mac_destroy_mbuf(struct mbuf *);
|
|
void mac_destroy_mount(struct mount *);
|
|
void mac_destroy_vnode(struct vnode *);
|
|
|
|
/*
|
|
* Labeling event operations: file system objects, and things that
|
|
* look a lot like file system objects.
|
|
*/
|
|
void mac_create_devfs_device(dev_t dev, struct devfs_dirent *de);
|
|
void mac_create_devfs_directory(char *dirname, int dirnamelen,
|
|
struct devfs_dirent *de);
|
|
void mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp);
|
|
void mac_create_vnode(struct ucred *cred, struct vnode *parent,
|
|
struct vnode *child);
|
|
void mac_create_mount(struct ucred *cred, struct mount *mp);
|
|
void mac_create_root_mount(struct ucred *cred, struct mount *mp);
|
|
void mac_relabel_vnode(struct ucred *cred, struct vnode *vp,
|
|
struct label *newlabel);
|
|
void mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp);
|
|
void mac_update_procfsvnode(struct vnode *vp, struct ucred *cred);
|
|
void mac_update_vnode_from_mount(struct vnode *vp, struct mount *mp);
|
|
|
|
/*
|
|
* Labeling event operations: IPC objects.
|
|
*/
|
|
void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m);
|
|
void mac_create_socket(struct ucred *cred, struct socket *socket);
|
|
void mac_create_socket_from_socket(struct socket *oldsocket,
|
|
struct socket *newsocket);
|
|
void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf,
|
|
struct socket *socket);
|
|
void mac_set_socket_peer_from_socket(struct socket *oldsocket,
|
|
struct socket *newsocket);
|
|
void mac_create_pipe(struct ucred *cred, struct pipe *pipe);
|
|
|
|
/*
|
|
* Labeling event operations: network objects.
|
|
*/
|
|
void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d);
|
|
void mac_create_ifnet(struct ifnet *ifp);
|
|
void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq);
|
|
void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram);
|
|
void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment);
|
|
void mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf);
|
|
void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m);
|
|
void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m);
|
|
void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m);
|
|
void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf,
|
|
struct ifnet *ifnet, struct mbuf *newmbuf);
|
|
void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf);
|
|
int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq);
|
|
void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq);
|
|
|
|
/*
|
|
* Labeling event operations: processes.
|
|
*/
|
|
void mac_create_cred(struct ucred *cred_parent, struct ucred *cred_child);
|
|
void mac_execve_transition(struct ucred *old, struct ucred *new,
|
|
struct vnode *vp);
|
|
int mac_execve_will_transition(struct ucred *old, struct vnode *vp);
|
|
void mac_create_proc0(struct ucred *cred);
|
|
void mac_create_proc1(struct ucred *cred);
|
|
|
|
/* Access control checks. */
|
|
int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet);
|
|
int mac_check_cred_visible(struct ucred *u1, struct ucred *u2);
|
|
int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m);
|
|
int mac_check_mount_stat(struct ucred *cred, struct mount *mp);
|
|
int mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe,
|
|
unsigned long cmd, void *data);
|
|
int mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe);
|
|
int mac_check_pipe_read(struct ucred *cred, struct pipe *pipe);
|
|
int mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe);
|
|
int mac_check_pipe_write(struct ucred *cred, struct pipe *pipe);
|
|
int mac_check_proc_debug(struct ucred *cred, struct proc *proc);
|
|
int mac_check_proc_sched(struct ucred *cred, struct proc *proc);
|
|
int mac_check_proc_signal(struct ucred *cred, struct proc *proc,
|
|
int signum);
|
|
int mac_check_socket_bind(struct ucred *cred, struct socket *so,
|
|
struct sockaddr *sockaddr);
|
|
int mac_check_socket_connect(struct ucred *cred, struct socket *so,
|
|
struct sockaddr *sockaddr);
|
|
int mac_check_socket_deliver(struct socket *so, struct mbuf *m);
|
|
int mac_check_socket_listen(struct ucred *cred, struct socket *so);
|
|
int mac_check_socket_visible(struct ucred *cred, struct socket *so);
|
|
int mac_check_vnode_access(struct ucred *cred, struct vnode *vp,
|
|
int flags);
|
|
int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp);
|
|
int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp);
|
|
int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp,
|
|
struct componentname *cnp, struct vattr *vap);
|
|
int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp,
|
|
struct vnode *vp, struct componentname *cnp);
|
|
int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp,
|
|
acl_type_t type);
|
|
int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp);
|
|
int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp,
|
|
acl_type_t type);
|
|
int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp,
|
|
int attrnamespace, const char *name, struct uio *uio);
|
|
int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp,
|
|
struct componentname *cnp);
|
|
/* XXX This u_char should be vm_prot_t! */
|
|
u_char mac_check_vnode_mmap_prot(struct ucred *cred, struct vnode *vp,
|
|
int newmapping);
|
|
int mac_check_vnode_open(struct ucred *cred, struct vnode *vp,
|
|
mode_t acc_mode);
|
|
int mac_check_vnode_poll(struct ucred *cred, struct vnode *vp);
|
|
int mac_check_vnode_read(struct ucred *cred, struct vnode *vp);
|
|
int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp);
|
|
int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp);
|
|
int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp,
|
|
struct vnode *vp, struct componentname *cnp);
|
|
int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp,
|
|
struct vnode *vp, int samedir, struct componentname *cnp);
|
|
int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp);
|
|
int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp,
|
|
acl_type_t type, struct acl *acl);
|
|
int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp,
|
|
int attrnamespace, const char *name, struct uio *uio);
|
|
int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp,
|
|
u_long flags);
|
|
int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp,
|
|
mode_t mode);
|
|
int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp,
|
|
uid_t uid, gid_t gid);
|
|
int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp,
|
|
struct timespec atime, struct timespec mtime);
|
|
int mac_check_vnode_stat(struct ucred *cred, struct vnode *vp);
|
|
int mac_check_vnode_write(struct ucred *cred, struct vnode *vp);
|
|
int mac_getsockopt_label_get(struct ucred *cred, struct socket *so,
|
|
struct mac *extmac);
|
|
int mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so,
|
|
struct mac *extmac);
|
|
int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr,
|
|
struct ifnet *ifnet);
|
|
int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr,
|
|
struct ifnet *ifnet);
|
|
int mac_setsockopt_label_set(struct ucred *cred, struct socket *so,
|
|
struct mac *extmac);
|
|
int mac_pipe_label_set(struct ucred *cred, struct pipe *pipe,
|
|
struct label *label);
|
|
|
|
/*
|
|
* Calls to help various file systems implement labeling functionality
|
|
* using their existing EA implementation.
|
|
*/
|
|
int vop_stdcreatevnode_ea(struct vnode *dvp, struct vnode *tvp,
|
|
struct ucred *cred);
|
|
int vop_stdrefreshlabel_ea(struct vop_refreshlabel_args *ap);
|
|
int vop_stdsetlabel_ea(struct vop_setlabel_args *ap);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_SYS_MAC_H */
|