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authorJohn Johansen <john.johansen@canonical.com>2017-01-20 01:08:36 +0300
committerJohn Johansen <john.johansen@canonical.com>2018-02-09 22:30:01 +0300
commit4d2f8ba3e3b76e34f84ae1de456934713e9e59af (patch)
tree27ef81949dd96ddcffeec4924962103533459a3e
parent3acfd5f54ca16c15c36ac2f218357f2707b7edb8 (diff)
downloadlinux-4d2f8ba3e3b76e34f84ae1de456934713e9e59af.tar.xz
apparmor: rename task_ctx to the more accurate cred_ctx
Signed-off-by: John Johansen <john.johansen@canonical.com>
-rw-r--r--security/apparmor/context.c38
-rw-r--r--security/apparmor/domain.c6
-rw-r--r--security/apparmor/include/context.h19
-rw-r--r--security/apparmor/lsm.c26
-rw-r--r--security/apparmor/policy.c2
5 files changed, 45 insertions, 46 deletions
diff --git a/security/apparmor/context.c b/security/apparmor/context.c
index c95f1ac6190b..89c03053303e 100644
--- a/security/apparmor/context.c
+++ b/security/apparmor/context.c
@@ -13,11 +13,11 @@
* License.
*
*
- * AppArmor sets confinement on every task, via the the aa_task_ctx and
- * the aa_task_ctx.label, both of which are required and are not allowed
- * to be NULL. The aa_task_ctx is not reference counted and is unique
+ * AppArmor sets confinement on every task, via the the aa_cred_ctx and
+ * the aa_cred_ctx.label, both of which are required and are not allowed
+ * to be NULL. The aa_cred_ctx is not reference counted and is unique
* to each cred (which is reference count). The label pointed to by
- * the task_ctx is reference counted.
+ * the cred_ctx is reference counted.
*
* TODO
* If a task uses change_hat it currently does not return to the old
@@ -30,21 +30,21 @@
#include "include/policy.h"
/**
- * aa_alloc_task_context - allocate a new task_ctx
+ * aa_alloc_cred_ctx - allocate a new cred_ctx
* @flags: gfp flags for allocation
*
* Returns: allocated buffer or NULL on failure
*/
-struct aa_task_ctx *aa_alloc_task_context(gfp_t flags)
+struct aa_cred_ctx *aa_alloc_cred_ctx(gfp_t flags)
{
- return kzalloc(sizeof(struct aa_task_ctx), flags);
+ return kzalloc(sizeof(struct aa_cred_ctx), flags);
}
/**
- * aa_free_task_context - free a task_ctx
- * @ctx: task_ctx to free (MAYBE NULL)
+ * aa_free_cred_ctx - free a cred_ctx
+ * @ctx: cred_ctx to free (MAYBE NULL)
*/
-void aa_free_task_context(struct aa_task_ctx *ctx)
+void aa_free_cred_ctx(struct aa_cred_ctx *ctx)
{
if (ctx) {
aa_put_label(ctx->label);
@@ -56,11 +56,11 @@ void aa_free_task_context(struct aa_task_ctx *ctx)
}
/**
- * aa_dup_task_context - duplicate a task context, incrementing reference counts
+ * aa_dup_cred_ctx - duplicate a task context, incrementing reference counts
* @new: a blank task context (NOT NULL)
* @old: the task context to copy (NOT NULL)
*/
-void aa_dup_task_context(struct aa_task_ctx *new, const struct aa_task_ctx *old)
+void aa_dup_cred_ctx(struct aa_cred_ctx *new, const struct aa_cred_ctx *old)
{
*new = *old;
aa_get_label(new->label);
@@ -93,7 +93,7 @@ struct aa_label *aa_get_task_label(struct task_struct *task)
*/
int aa_replace_current_label(struct aa_label *label)
{
- struct aa_task_ctx *ctx = current_ctx();
+ struct aa_cred_ctx *ctx = current_cred_ctx();
struct cred *new;
AA_BUG(!label);
@@ -112,7 +112,7 @@ int aa_replace_current_label(struct aa_label *label)
/* if switching to unconfined or a different label namespace
* clear out context state
*/
- aa_clear_task_ctx_trans(ctx);
+ aa_clear_cred_ctx_trans(ctx);
/*
* be careful switching ctx->profile, when racing replacement it
@@ -136,14 +136,14 @@ int aa_replace_current_label(struct aa_label *label)
*/
int aa_set_current_onexec(struct aa_label *label, bool stack)
{
- struct aa_task_ctx *ctx;
+ struct aa_cred_ctx *ctx;
struct cred *new = prepare_creds();
if (!new)
return -ENOMEM;
ctx = cred_ctx(new);
aa_get_label(label);
- aa_clear_task_ctx_trans(ctx);
+ aa_clear_cred_ctx_trans(ctx);
ctx->onexec = label;
ctx->token = stack;
@@ -163,7 +163,7 @@ int aa_set_current_onexec(struct aa_label *label, bool stack)
*/
int aa_set_current_hat(struct aa_label *label, u64 token)
{
- struct aa_task_ctx *ctx;
+ struct aa_cred_ctx *ctx;
struct cred *new = prepare_creds();
if (!new)
return -ENOMEM;
@@ -201,7 +201,7 @@ int aa_set_current_hat(struct aa_label *label, u64 token)
*/
int aa_restore_previous_label(u64 token)
{
- struct aa_task_ctx *ctx;
+ struct aa_cred_ctx *ctx;
struct cred *new = prepare_creds();
if (!new)
return -ENOMEM;
@@ -221,7 +221,7 @@ int aa_restore_previous_label(u64 token)
ctx->label = aa_get_newest_label(ctx->previous);
AA_BUG(!ctx->label);
/* clear exec && prev information when restoring to previous context */
- aa_clear_task_ctx_trans(ctx);
+ aa_clear_cred_ctx_trans(ctx);
commit_creds(new);
return 0;
diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c
index 6a54d2ffa840..90967de96be0 100644
--- a/security/apparmor/domain.c
+++ b/security/apparmor/domain.c
@@ -779,7 +779,7 @@ static struct aa_label *handle_onexec(struct aa_label *label,
*/
int apparmor_bprm_set_creds(struct linux_binprm *bprm)
{
- struct aa_task_ctx *ctx;
+ struct aa_cred_ctx *ctx;
struct aa_label *label, *new = NULL;
struct aa_profile *profile;
char *buffer = NULL;
@@ -859,7 +859,7 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm)
done:
/* clear out temporary/transitional state from the context */
- aa_clear_task_ctx_trans(ctx);
+ aa_clear_cred_ctx_trans(ctx);
aa_put_label(label);
put_buffers(buffer);
@@ -1049,7 +1049,7 @@ build:
int aa_change_hat(const char *hats[], int count, u64 token, int flags)
{
const struct cred *cred;
- struct aa_task_ctx *ctx;
+ struct aa_cred_ctx *ctx;
struct aa_label *label, *previous, *new = NULL, *target = NULL;
struct aa_profile *profile;
struct aa_perms perms = {};
diff --git a/security/apparmor/include/context.h b/security/apparmor/include/context.h
index 6ae07e9aaa17..0622fcf2a695 100644
--- a/security/apparmor/include/context.h
+++ b/security/apparmor/include/context.h
@@ -23,10 +23,10 @@
#include "policy_ns.h"
#define cred_ctx(X) ((X)->security)
-#define current_ctx() cred_ctx(current_cred())
+#define current_cred_ctx() cred_ctx(current_cred())
/**
- * struct aa_task_ctx - primary label for confined tasks
+ * struct aa_cred_ctx - primary label for confined tasks
* @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)
@@ -37,17 +37,16 @@
*
* TODO: make so a task can be confined by a stack of contexts
*/
-struct aa_task_ctx {
+struct aa_cred_ctx {
struct aa_label *label;
struct aa_label *onexec;
struct aa_label *previous;
u64 token;
};
-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);
+struct aa_cred_ctx *aa_alloc_cred_ctx(gfp_t flags);
+void aa_free_cred_ctx(struct aa_cred_ctx *ctx);
+void aa_dup_cred_ctx(struct aa_cred_ctx *new, const struct aa_cred_ctx *old);
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);
@@ -65,7 +64,7 @@ struct aa_label *aa_get_task_label(struct task_struct *task);
*/
static inline struct aa_label *aa_cred_raw_label(const struct cred *cred)
{
- struct aa_task_ctx *ctx = cred_ctx(cred);
+ struct aa_cred_ctx *ctx = cred_ctx(cred);
AA_BUG(!ctx || !ctx->label);
return ctx->label;
@@ -214,10 +213,10 @@ static inline struct aa_ns *aa_get_current_ns(void)
}
/**
- * aa_clear_task_ctx_trans - clear transition tracking info from the ctx
+ * aa_clear_cred_ctx_trans - clear transition tracking info from the ctx
* @ctx: task context to clear (NOT NULL)
*/
-static inline void aa_clear_task_ctx_trans(struct aa_task_ctx *ctx)
+static inline void aa_clear_cred_ctx_trans(struct aa_cred_ctx *ctx)
{
aa_put_label(ctx->previous);
aa_put_label(ctx->onexec);
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index 9a65eeaf7dfa..0624eb2081f3 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -51,11 +51,11 @@ DEFINE_PER_CPU(struct aa_buffers, aa_buffers);
*/
/*
- * free the associated aa_task_ctx and put its labels
+ * free the associated aa_cred_ctx and put its labels
*/
static void apparmor_cred_free(struct cred *cred)
{
- aa_free_task_context(cred_ctx(cred));
+ aa_free_cred_ctx(cred_ctx(cred));
cred_ctx(cred) = NULL;
}
@@ -65,7 +65,7 @@ static void apparmor_cred_free(struct cred *cred)
static int apparmor_cred_alloc_blank(struct cred *cred, gfp_t gfp)
{
/* freed by apparmor_cred_free */
- struct aa_task_ctx *ctx = aa_alloc_task_context(gfp);
+ struct aa_cred_ctx *ctx = aa_alloc_cred_ctx(gfp);
if (!ctx)
return -ENOMEM;
@@ -75,18 +75,18 @@ static int apparmor_cred_alloc_blank(struct cred *cred, gfp_t gfp)
}
/*
- * prepare new aa_task_ctx for modification by prepare_cred block
+ * prepare new aa_cred_ctx for modification by prepare_cred block
*/
static int apparmor_cred_prepare(struct cred *new, const struct cred *old,
gfp_t gfp)
{
/* freed by apparmor_cred_free */
- struct aa_task_ctx *ctx = aa_alloc_task_context(gfp);
+ struct aa_cred_ctx *ctx = aa_alloc_cred_ctx(gfp);
if (!ctx)
return -ENOMEM;
- aa_dup_task_context(ctx, cred_ctx(old));
+ aa_dup_cred_ctx(ctx, cred_ctx(old));
cred_ctx(new) = ctx;
return 0;
}
@@ -96,10 +96,10 @@ static int apparmor_cred_prepare(struct cred *new, const struct cred *old,
*/
static void apparmor_cred_transfer(struct cred *new, const struct cred *old)
{
- const struct aa_task_ctx *old_ctx = cred_ctx(old);
- struct aa_task_ctx *new_ctx = cred_ctx(new);
+ const struct aa_cred_ctx *old_ctx = cred_ctx(old);
+ struct aa_cred_ctx *new_ctx = cred_ctx(new);
- aa_dup_task_context(new_ctx, old_ctx);
+ aa_dup_cred_ctx(new_ctx, old_ctx);
}
static int apparmor_ptrace_access_check(struct task_struct *child,
@@ -577,7 +577,7 @@ static int apparmor_getprocattr(struct task_struct *task, char *name,
int error = -ENOENT;
/* released below */
const struct cred *cred = get_task_cred(task);
- struct aa_task_ctx *ctx = cred_ctx(cred);
+ struct aa_cred_ctx *ctx = cred_ctx(cred);
struct aa_label *label = NULL;
if (strcmp(name, "current") == 0)
@@ -678,7 +678,7 @@ fail:
static void apparmor_bprm_committing_creds(struct linux_binprm *bprm)
{
struct aa_label *label = aa_current_raw_label();
- struct aa_task_ctx *new_ctx = cred_ctx(bprm->cred);
+ struct aa_cred_ctx *new_ctx = cred_ctx(bprm->cred);
/* bail out if unconfined or not changing profile */
if ((new_ctx->label->proxy == label->proxy) ||
@@ -1024,9 +1024,9 @@ static int param_set_mode(const char *val, const struct kernel_param *kp)
static int __init set_init_ctx(void)
{
struct cred *cred = (struct cred *)current->real_cred;
- struct aa_task_ctx *ctx;
+ struct aa_cred_ctx *ctx;
- ctx = aa_alloc_task_context(GFP_KERNEL);
+ ctx = aa_alloc_cred_ctx(GFP_KERNEL);
if (!ctx)
return -ENOMEM;
diff --git a/security/apparmor/policy.c b/security/apparmor/policy.c
index b0b58848c248..c505d517fa3c 100644
--- a/security/apparmor/policy.c
+++ b/security/apparmor/policy.c
@@ -845,7 +845,7 @@ static struct aa_profile *update_to_newest_parent(struct aa_profile *new)
* @udata: serialized data stream (NOT NULL)
*
* unpack and replace a profile on the profile list and uses of that profile
- * by any aa_task_ctx. If the profile does not exist on the profile list
+ * by any aa_cred_ctx. If the profile does not exist on the profile list
* it is added.
*
* Returns: size of data consumed else error code on failure.