函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\apparmor\policy.c Create Date:2022-07-27 21:32:45
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：aa_find_child - find a profile by @name in @parent*@parent: profile to search (NOT NULL)*@name: profile name to search for (NOT NULL)* Returns: a refcounted profile or NULL if not found

函数原型：struct aa_profile *aa_find_child(struct aa_profile *parent, const char *name)

返回类型：struct aa_profile

参数：

类型参数名称
struct aa_profile *parent
const char *name
337  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
338  循环
339  profile等于__find_child - find a profile on @head list with a name matching @name*@head: list to search (NOT NULL)*@name: name of profile (NOT NULL)* Requires: rcu_read_lock be held* Returns: unrefcounted profile ptr, or NULL if not found
340  当profile且非aa_get_profile_not0 - increment refcount on profile @p found via lookup*@p: profile (MAYBE NULL)* Returns: pointer to @p if @p is NULL will return NULL* Requires: @p must be held with valid refcount when called循环
341  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
344  返回:profile
调用者
名称描述
build_change_hathelper fn for change_hat* Returns: label for hat transition OR ERR_PTR. Does NOT return NULL
change_hathelper fn for changing into a hat* Returns: label for hat transition or ERR_PTR. Does not return NULL
aa_new_null_profileaa_new_null_profile - create or find a null-X learning profile*@parent: profile that caused this profile to be created (NOT NULL)*@hat: true if the null- learning profile is a hat*@base: name to base the null profile off of*@gfp: type of allocation
x_table_lookupx_table_lookup - lookup an x transition name via transition table*@profile: current profile (NOT NULL)*@xindex: index into x transition table*@name: returns: name tested to find label (NOT NULL)* Returns: refcounted label, or NULL on failure (MAYBE NULL)