diff options
Diffstat (limited to 'security/apparmor/include')
-rw-r--r-- | security/apparmor/include/audit.h | 26 | ||||
-rw-r--r-- | security/apparmor/include/net.h | 114 | ||||
-rw-r--r-- | security/apparmor/include/perms.h | 5 | ||||
-rw-r--r-- | security/apparmor/include/policy.h | 13 |
4 files changed, 147 insertions, 11 deletions
diff --git a/security/apparmor/include/audit.h b/security/apparmor/include/audit.h index 620e81169659..ff4316e1068d 100644 --- a/security/apparmor/include/audit.h +++ b/security/apparmor/include/audit.h @@ -121,21 +121,29 @@ struct apparmor_audit_data { /* these entries require a custom callback fn */ struct { struct aa_label *peer; - struct { - const char *target; - kuid_t ouid; - } fs; + union { + struct { + kuid_t ouid; + const char *target; + } fs; + struct { + int type, protocol; + struct sock *peer_sk; + void *addr; + int addrlen; + } net; + int signal; + struct { + int rlim; + unsigned long max; + } rlim; + }; }; struct { struct aa_profile *profile; const char *ns; long pos; } iface; - int signal; - struct { - int rlim; - unsigned long max; - } rlim; struct { const char *src_name; const char *type; diff --git a/security/apparmor/include/net.h b/security/apparmor/include/net.h new file mode 100644 index 000000000000..140c8efcf364 --- /dev/null +++ b/security/apparmor/include/net.h @@ -0,0 +1,114 @@ +/* + * AppArmor security module + * + * This file contains AppArmor network mediation definitions. + * + * Copyright (C) 1998-2008 Novell/SUSE + * Copyright 2009-2017 Canonical Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, version 2 of the + * License. + */ + +#ifndef __AA_NET_H +#define __AA_NET_H + +#include <net/sock.h> +#include <linux/path.h> + +#include "apparmorfs.h" +#include "label.h" +#include "perms.h" +#include "policy.h" + +#define AA_MAY_SEND AA_MAY_WRITE +#define AA_MAY_RECEIVE AA_MAY_READ + +#define AA_MAY_SHUTDOWN AA_MAY_DELETE + +#define AA_MAY_CONNECT AA_MAY_OPEN +#define AA_MAY_ACCEPT 0x00100000 + +#define AA_MAY_BIND 0x00200000 +#define AA_MAY_LISTEN 0x00400000 + +#define AA_MAY_SETOPT 0x01000000 +#define AA_MAY_GETOPT 0x02000000 + +#define NET_PERMS_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \ + AA_MAY_SHUTDOWN | AA_MAY_BIND | AA_MAY_LISTEN | \ + AA_MAY_CONNECT | AA_MAY_ACCEPT | AA_MAY_SETATTR | \ + AA_MAY_GETATTR | AA_MAY_SETOPT | AA_MAY_GETOPT) + +#define NET_FS_PERMS (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \ + AA_MAY_SHUTDOWN | AA_MAY_CONNECT | AA_MAY_RENAME |\ + AA_MAY_SETATTR | AA_MAY_GETATTR | AA_MAY_CHMOD | \ + AA_MAY_CHOWN | AA_MAY_CHGRP | AA_MAY_LOCK | \ + AA_MAY_MPROT) + +#define NET_PEER_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CONNECT | \ + AA_MAY_ACCEPT) +struct aa_sk_ctx { + struct aa_label *label; + struct aa_label *peer; + struct path path; +}; + +#define SK_CTX(X) ((X)->sk_security) +#define SOCK_ctx(X) SOCK_INODE(X)->i_security +#define DEFINE_AUDIT_NET(NAME, OP, SK, F, T, P) \ + struct lsm_network_audit NAME ## _net = { .sk = (SK), \ + .family = (F)}; \ + DEFINE_AUDIT_DATA(NAME, \ + ((SK) && (F) != AF_UNIX) ? LSM_AUDIT_DATA_NET : \ + LSM_AUDIT_DATA_NONE, \ + OP); \ + NAME.u.net = &(NAME ## _net); \ + aad(&NAME)->net.type = (T); \ + aad(&NAME)->net.protocol = (P) + +#define DEFINE_AUDIT_SK(NAME, OP, SK) \ + DEFINE_AUDIT_NET(NAME, OP, SK, (SK)->sk_family, (SK)->sk_type, \ + (SK)->sk_protocol) + +/* struct aa_net - network confinement data + * @allow: basic network families permissions + * @audit: which network permissions to force audit + * @quiet: which network permissions to quiet rejects + */ +struct aa_net { + u16 allow[AF_MAX]; + u16 audit[AF_MAX]; + u16 quiet[AF_MAX]; +}; + + +extern struct aa_sfs_entry aa_sfs_entry_network[]; + +void audit_net_cb(struct audit_buffer *ab, void *va); +int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa, + u32 request, u16 family, int type); +int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family, + int type, int protocol); +static inline int aa_profile_af_sk_perm(struct aa_profile *profile, + struct common_audit_data *sa, + u32 request, + struct sock *sk) +{ + return aa_profile_af_perm(profile, sa, request, sk->sk_family, + sk->sk_type); +} +int aa_sk_perm(const char *op, u32 request, struct sock *sk); + +int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request, + struct socket *sock); + + +static inline void aa_free_net_rules(struct aa_net *new) +{ + /* NOP */ +} + +#endif /* __AA_NET_H */ diff --git a/security/apparmor/include/perms.h b/security/apparmor/include/perms.h index 2b27bb79aec4..af04d5a7d73d 100644 --- a/security/apparmor/include/perms.h +++ b/security/apparmor/include/perms.h @@ -135,9 +135,10 @@ extern struct aa_perms allperms; void aa_perm_mask_to_str(char *str, const char *chrs, u32 mask); -void aa_audit_perm_names(struct audit_buffer *ab, const char **names, u32 mask); +void aa_audit_perm_names(struct audit_buffer *ab, const char * const *names, + u32 mask); void aa_audit_perm_mask(struct audit_buffer *ab, u32 mask, const char *chrs, - u32 chrsmask, const char **names, u32 namesmask); + u32 chrsmask, const char * const *names, u32 namesmask); void aa_apply_modes_to_perms(struct aa_profile *profile, struct aa_perms *perms); void aa_compute_perms(struct aa_dfa *dfa, unsigned int state, diff --git a/security/apparmor/include/policy.h b/security/apparmor/include/policy.h index 17fe41a9cac3..4364088a0b9e 100644 --- a/security/apparmor/include/policy.h +++ b/security/apparmor/include/policy.h @@ -30,6 +30,7 @@ #include "file.h" #include "lib.h" #include "label.h" +#include "net.h" #include "perms.h" #include "resource.h" @@ -111,6 +112,7 @@ struct aa_data { * @policy: general match rules governing policy * @file: The set of rules governing basic file access and domain transitions * @caps: capabilities for the profile + * @net: network controls for the profile * @rlimits: rlimits for the profile * * @dents: dentries for the profiles file entries in apparmorfs @@ -148,6 +150,7 @@ struct aa_profile { struct aa_policydb policy; struct aa_file_rules file; struct aa_caps caps; + struct aa_net net; struct aa_rlimit rlimits; struct aa_loaddata *rawdata; @@ -220,6 +223,16 @@ static inline unsigned int PROFILE_MEDIATES_SAFE(struct aa_profile *profile, return 0; } +static inline unsigned int PROFILE_MEDIATES_AF(struct aa_profile *profile, + u16 AF) { + unsigned int state = PROFILE_MEDIATES(profile, AA_CLASS_NET); + u16 be_af = cpu_to_be16(AF); + + if (!state) + return 0; + return aa_dfa_match_len(profile->policy.dfa, state, (char *) &be_af, 2); +} + /** * aa_get_profile - increment refcount on profile @p * @p: profile (MAYBE NULL) |