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-rw-r--r--security/apparmor/include/context.h158
1 files changed, 78 insertions, 80 deletions
diff --git a/security/apparmor/include/context.h b/security/apparmor/include/context.h
index 7665fae..6ae07e9 100644
--- a/security/apparmor/include/context.h
+++ b/security/apparmor/include/context.h
@@ -19,7 +19,7 @@
#include <linux/slab.h>
#include <linux/sched.h>
-#include "policy.h"
+#include "label.h"
#include "policy_ns.h"
#define cred_ctx(X) ((X)->security)
@@ -27,20 +27,20 @@
/**
* struct aa_task_ctx - primary label for confined tasks
- * @profile: the current profile (NOT NULL)
- * @exec: profile to transition to on next exec (MAYBE NULL)
- * @previous: profile the task may return to (MAYBE NULL)
- * @token: magic value the task must know for returning to @previous_profile
+ * @label: the current label (NOT NULL)
+ * @exec: label to transition to on next exec (MAYBE NULL)
+ * @previous: label the task may return to (MAYBE NULL)
+ * @token: magic value the task must know for returning to @previous
*
- * Contains the task's current profile (which could change due to
+ * Contains the task's current label (which could change due to
* change_hat). Plus the hat_magic needed during change_hat.
*
* TODO: make so a task can be confined by a stack of contexts
*/
struct aa_task_ctx {
- struct aa_profile *profile;
- struct aa_profile *onexec;
- struct aa_profile *previous;
+ struct aa_label *label;
+ struct aa_label *onexec;
+ struct aa_label *previous;
u64 token;
};
@@ -48,52 +48,51 @@ struct aa_task_ctx *aa_alloc_task_context(gfp_t flags);
void aa_free_task_context(struct aa_task_ctx *ctx);
void aa_dup_task_context(struct aa_task_ctx *new,
const struct aa_task_ctx *old);
-int aa_replace_current_profile(struct aa_profile *profile);
-int aa_set_current_onexec(struct aa_profile *profile);
-int aa_set_current_hat(struct aa_profile *profile, u64 token);
-int aa_restore_previous_profile(u64 cookie);
-struct aa_profile *aa_get_task_profile(struct task_struct *task);
+int aa_replace_current_label(struct aa_label *label);
+int aa_set_current_onexec(struct aa_label *label, bool stack);
+int aa_set_current_hat(struct aa_label *label, u64 token);
+int aa_restore_previous_label(u64 cookie);
+struct aa_label *aa_get_task_label(struct task_struct *task);
/**
- * aa_cred_raw_profile - obtain cred's profiles
- * @cred: cred to obtain profiles from (NOT NULL)
+ * aa_cred_raw_label - obtain cred's label
+ * @cred: cred to obtain label from (NOT NULL)
*
- * Returns: confining profile
+ * Returns: confining label
*
* does NOT increment reference count
*/
-static inline struct aa_profile *aa_cred_raw_profile(const struct cred *cred)
+static inline struct aa_label *aa_cred_raw_label(const struct cred *cred)
{
struct aa_task_ctx *ctx = cred_ctx(cred);
- AA_BUG(!ctx || !ctx->profile);
- return ctx->profile;
+ AA_BUG(!ctx || !ctx->label);
+ return ctx->label;
}
/**
- * aa_get_newest_cred_profile - obtain the newest profile on a cred
- * @cred: cred to obtain profile from (NOT NULL)
+ * aa_get_newest_cred_label - obtain the newest label on a cred
+ * @cred: cred to obtain label from (NOT NULL)
*
- * Returns: newest version of confining profile
+ * Returns: newest version of confining label
*/
-static inline
-struct aa_profile *aa_get_newest_cred_profile(const struct cred *cred)
+static inline struct aa_label *aa_get_newest_cred_label(const struct cred *cred)
{
- return aa_get_newest_profile(aa_cred_raw_profile(cred));
+ return aa_get_newest_label(aa_cred_raw_label(cred));
}
/**
- * __aa_task_raw_profile - retrieve another task's profile
+ * __aa_task_raw_label - retrieve another task's label
* @task: task to query (NOT NULL)
*
- * Returns: @task's profile without incrementing its ref count
+ * Returns: @task's label without incrementing its ref count
*
* If @task != current needs to be called in RCU safe critical section
*/
-static inline struct aa_profile *__aa_task_raw_profile(struct task_struct *task)
+static inline struct aa_label *__aa_task_raw_label(struct task_struct *task)
{
- return aa_cred_raw_profile(__task_cred(task));
+ return aa_cred_raw_label(__task_cred(task));
}
/**
@@ -104,113 +103,112 @@ static inline struct aa_profile *__aa_task_raw_profile(struct task_struct *task)
*/
static inline bool __aa_task_is_confined(struct task_struct *task)
{
- return !unconfined(__aa_task_raw_profile(task));
+ return !unconfined(__aa_task_raw_label(task));
}
/**
- * aa_current_raw_profile - find the current tasks confining profile
+ * aa_current_raw_label - find the current tasks confining label
*
- * Returns: up to date confining profile or the ns unconfined profile (NOT NULL)
+ * Returns: up to date confining label or the ns unconfined label (NOT NULL)
*
* This fn will not update the tasks cred to the most up to date version
- * of the profile so it is safe to call when inside of locks.
+ * of the label so it is safe to call when inside of locks.
*/
-static inline struct aa_profile *aa_current_raw_profile(void)
+static inline struct aa_label *aa_current_raw_label(void)
{
- return aa_cred_raw_profile(current_cred());
+ return aa_cred_raw_label(current_cred());
}
/**
- * aa_get_current_profile - get the newest version of the current tasks profile
+ * aa_get_current_label - get the newest version of the current tasks label
*
- * Returns: newest version of confining profile (NOT NULL)
+ * Returns: newest version of confining label (NOT NULL)
*
* This fn will not update the tasks cred, so it is safe inside of locks
*
- * The returned reference must be put with aa_put_profile()
+ * The returned reference must be put with aa_put_label()
*/
-static inline struct aa_profile *aa_get_current_profile(void)
+static inline struct aa_label *aa_get_current_label(void)
{
- struct aa_profile *p = aa_current_raw_profile();
+ struct aa_label *l = aa_current_raw_label();
- if (profile_is_stale(p))
- return aa_get_newest_profile(p);
- return aa_get_profile(p);
+ if (label_is_stale(l))
+ return aa_get_newest_label(l);
+ return aa_get_label(l);
}
-#define __end_current_profile_crit_section(X) \
- end_current_profile_crit_section(X)
+#define __end_current_label_crit_section(X) end_current_label_crit_section(X)
/**
- * end_profile_crit_section - put a reference found with begin_current_profile..
- * @profile: profile reference to put
+ * end_label_crit_section - put a reference found with begin_current_label..
+ * @label: label reference to put
*
* Should only be used with a reference obtained with
- * begin_current_profile_crit_section and never used in situations where the
+ * begin_current_label_crit_section and never used in situations where the
* task cred may be updated
*/
-static inline void end_current_profile_crit_section(struct aa_profile *profile)
+static inline void end_current_label_crit_section(struct aa_label *label)
{
- if (profile != aa_current_raw_profile())
- aa_put_profile(profile);
+ if (label != aa_current_raw_label())
+ aa_put_label(label);
}
/**
- * __begin_current_profile_crit_section - current's confining profile
+ * __begin_current_label_crit_section - current's confining label
*
- * Returns: up to date confining profile or the ns unconfined profile (NOT NULL)
+ * Returns: up to date confining label or the ns unconfined label (NOT NULL)
*
* safe to call inside locks
*
- * The returned reference must be put with __end_current_profile_crit_section()
+ * The returned reference must be put with __end_current_label_crit_section()
* This must NOT be used if the task cred could be updated within the
- * critical section between __begin_current_profile_crit_section() ..
- * __end_current_profile_crit_section()
+ * critical section between __begin_current_label_crit_section() ..
+ * __end_current_label_crit_section()
*/
-static inline struct aa_profile *__begin_current_profile_crit_section(void)
+static inline struct aa_label *__begin_current_label_crit_section(void)
{
- struct aa_profile *profile = aa_current_raw_profile();
+ struct aa_label *label = aa_current_raw_label();
- if (profile_is_stale(profile))
- profile = aa_get_newest_profile(profile);
+ if (label_is_stale(label))
+ label = aa_get_newest_label(label);
- return profile;
+ return label;
}
/**
- * begin_current_profile_crit_section - current's profile and update if needed
+ * begin_current_label_crit_section - current's confining label and update it
*
- * Returns: up to date confining profile or the ns unconfined profile (NOT NULL)
+ * Returns: up to date confining label or the ns unconfined label (NOT NULL)
*
* Not safe to call inside locks
*
- * The returned reference must be put with end_current_profile_crit_section()
+ * The returned reference must be put with end_current_label_crit_section()
* This must NOT be used if the task cred could be updated within the
- * critical section between begin_current_profile_crit_section() ..
- * end_current_profile_crit_section()
+ * critical section between begin_current_label_crit_section() ..
+ * end_current_label_crit_section()
*/
-static inline struct aa_profile *begin_current_profile_crit_section(void)
+static inline struct aa_label *begin_current_label_crit_section(void)
{
- struct aa_profile *profile = aa_current_raw_profile();
+ struct aa_label *label = aa_current_raw_label();
- if (profile_is_stale(profile)) {
- profile = aa_get_newest_profile(profile);
- if (aa_replace_current_profile(profile) == 0)
+ if (label_is_stale(label)) {
+ label = aa_get_newest_label(label);
+ if (aa_replace_current_label(label) == 0)
/* task cred will keep the reference */
- aa_put_profile(profile);
+ aa_put_label(label);
}
- return profile;
+ return label;
}
static inline struct aa_ns *aa_get_current_ns(void)
{
- struct aa_profile *profile;
+ struct aa_label *label;
struct aa_ns *ns;
- profile = __begin_current_profile_crit_section();
- ns = aa_get_ns(profile->ns);
- __end_current_profile_crit_section(profile);
+ label = __begin_current_label_crit_section();
+ ns = aa_get_ns(labels_ns(label));
+ __end_current_label_crit_section(label);
return ns;
}
@@ -221,8 +219,8 @@ static inline struct aa_ns *aa_get_current_ns(void)
*/
static inline void aa_clear_task_ctx_trans(struct aa_task_ctx *ctx)
{
- aa_put_profile(ctx->previous);
- aa_put_profile(ctx->onexec);
+ aa_put_label(ctx->previous);
+ aa_put_label(ctx->onexec);
ctx->previous = NULL;
ctx->onexec = NULL;
ctx->token = 0;
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