diff options
| -rw-r--r-- | security/apparmor/include/apparmor.h | 82 | ||||
| -rw-r--r-- | security/apparmor/include/lib.h | 94 | ||||
| -rw-r--r-- | security/apparmor/include/policy.h | 1 | ||||
| -rw-r--r-- | security/apparmor/lib.c | 2 | ||||
| -rw-r--r-- | security/apparmor/match.c | 2 |
5 files changed, 99 insertions, 82 deletions
diff --git a/security/apparmor/include/apparmor.h b/security/apparmor/include/apparmor.h index 5d721e990876..1750cc0721c1 100644 --- a/security/apparmor/include/apparmor.h +++ b/security/apparmor/include/apparmor.h @@ -1,7 +1,7 @@ /* * AppArmor security module * - * This file contains AppArmor basic global and lib definitions + * This file contains AppArmor basic global * * Copyright (C) 1998-2008 Novell/SUSE * Copyright 2009-2010 Canonical Ltd. @@ -15,10 +15,7 @@ #ifndef __APPARMOR_H #define __APPARMOR_H -#include <linux/slab.h> -#include <linux/fs.h> - -#include "match.h" +#include <linux/types.h> /* * Class of mediation types in the AppArmor policy db @@ -43,79 +40,4 @@ extern bool aa_g_logsyscall; extern bool aa_g_paranoid_load; extern unsigned int aa_g_path_max; -/* - * DEBUG remains global (no per profile flag) since it is mostly used in sysctl - * which is not related to profile accesses. - */ - -#define AA_DEBUG(fmt, args...) \ - do { \ - if (aa_g_debug && printk_ratelimit()) \ - printk(KERN_DEBUG "AppArmor: " fmt, ##args); \ - } while (0) - -#define AA_ERROR(fmt, args...) \ - do { \ - if (printk_ratelimit()) \ - printk(KERN_ERR "AppArmor: " fmt, ##args); \ - } while (0) - -/* Flag indicating whether initialization completed */ -extern int apparmor_initialized __initdata; - -/* fn's in lib */ -char *aa_split_fqname(char *args, char **ns_name); -void aa_info_message(const char *str); -void *__aa_kvmalloc(size_t size, gfp_t flags); - -static inline void *kvmalloc(size_t size) -{ - return __aa_kvmalloc(size, 0); -} - -static inline void *kvzalloc(size_t size) -{ - return __aa_kvmalloc(size, __GFP_ZERO); -} - -/* returns 0 if kref not incremented */ -static inline int kref_get_not0(struct kref *kref) -{ - return atomic_inc_not_zero(&kref->refcount); -} - -/** - * aa_strneq - compare null terminated @str to a non null terminated substring - * @str: a null terminated string - * @sub: a substring, not necessarily null terminated - * @len: length of @sub to compare - * - * The @str string must be full consumed for this to be considered a match - */ -static inline bool aa_strneq(const char *str, const char *sub, int len) -{ - return !strncmp(str, sub, len) && !str[len]; -} - -/** - * aa_dfa_null_transition - step to next state after null character - * @dfa: the dfa to match against - * @start: the state of the dfa to start matching in - * - * aa_dfa_null_transition transitions to the next state after a null - * character which is not used in standard matching and is only - * used to separate pairs. - */ -static inline unsigned int aa_dfa_null_transition(struct aa_dfa *dfa, - unsigned int start) -{ - /* the null transition only needs the string's null terminator byte */ - return aa_dfa_next(dfa, start, 0); -} - -static inline bool mediated_filesystem(struct dentry *dentry) -{ - return !(dentry->d_sb->s_flags & MS_NOUSER); -} - #endif /* __APPARMOR_H */ diff --git a/security/apparmor/include/lib.h b/security/apparmor/include/lib.h new file mode 100644 index 000000000000..71fd6d28a651 --- /dev/null +++ b/security/apparmor/include/lib.h @@ -0,0 +1,94 @@ +/* + * AppArmor security module + * + * This file contains AppArmor lib definitions + * + * 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_LIB_H +#define __AA_LIB_H + +#include <linux/slab.h> +#include <linux/fs.h> + +#include "match.h" + +/* + * DEBUG remains global (no per profile flag) since it is mostly used in sysctl + * which is not related to profile accesses. + */ + +#define AA_DEBUG(fmt, args...) \ + do { \ + if (aa_g_debug) \ + pr_debug_ratelimited("AppArmor: " fmt, ##args); \ + } while (0) + +#define AA_ERROR(fmt, args...) \ + pr_err_ratelimited("AppArmor: " fmt, ##args) + +/* Flag indicating whether initialization completed */ +extern int apparmor_initialized __initdata; + +/* fn's in lib */ +char *aa_split_fqname(char *args, char **ns_name); +void aa_info_message(const char *str); +void *__aa_kvmalloc(size_t size, gfp_t flags); + +static inline void *kvmalloc(size_t size) +{ + return __aa_kvmalloc(size, 0); +} + +static inline void *kvzalloc(size_t size) +{ + return __aa_kvmalloc(size, __GFP_ZERO); +} + +/* returns 0 if kref not incremented */ +static inline int kref_get_not0(struct kref *kref) +{ + return atomic_inc_not_zero(&kref->refcount); +} + +/** + * aa_strneq - compare null terminated @str to a non null terminated substring + * @str: a null terminated string + * @sub: a substring, not necessarily null terminated + * @len: length of @sub to compare + * + * The @str string must be full consumed for this to be considered a match + */ +static inline bool aa_strneq(const char *str, const char *sub, int len) +{ + return !strncmp(str, sub, len) && !str[len]; +} + +/** + * aa_dfa_null_transition - step to next state after null character + * @dfa: the dfa to match against + * @start: the state of the dfa to start matching in + * + * aa_dfa_null_transition transitions to the next state after a null + * character which is not used in standard matching and is only + * used to separate pairs. + */ +static inline unsigned int aa_dfa_null_transition(struct aa_dfa *dfa, + unsigned int start) +{ + /* the null transition only needs the string's null terminator byte */ + return aa_dfa_next(dfa, start, 0); +} + +static inline bool mediated_filesystem(struct dentry *dentry) +{ + return !(dentry->d_sb->s_flags & MS_NOUSER); +} + +#endif /* AA_LIB_H */ diff --git a/security/apparmor/include/policy.h b/security/apparmor/include/policy.h index 52275f040a5f..190fe37ecff0 100644 --- a/security/apparmor/include/policy.h +++ b/security/apparmor/include/policy.h @@ -27,6 +27,7 @@ #include "capability.h" #include "domain.h" #include "file.h" +#include "lib.h" #include "resource.h" extern const char *const aa_profile_mode_names[]; diff --git a/security/apparmor/lib.c b/security/apparmor/lib.c index 2ef422a25474..6028ffc008ae 100644 --- a/security/apparmor/lib.c +++ b/security/apparmor/lib.c @@ -19,7 +19,7 @@ #include "include/audit.h" #include "include/apparmor.h" - +#include "include/lib.h" /** * aa_split_fqname - split a fqname into a profile and namespace name diff --git a/security/apparmor/match.c b/security/apparmor/match.c index 3f900fcca8fb..0e04bcf91154 100644 --- a/security/apparmor/match.c +++ b/security/apparmor/match.c @@ -20,7 +20,7 @@ #include <linux/err.h> #include <linux/kref.h> -#include "include/apparmor.h" +#include "include/lib.h" #include "include/match.h" #define base_idx(X) ((X) & 0xffffff) |