函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\apparmor\apparmorfs.c Create Date:2022-07-27 21:22:23
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：query_label - queries a label and writes permissions to buf*@buf: the resulting permissions string is stored here (NOT NULL)*@buf_len: size of buf*@query: binary query string to match against the dfa*@query_len: size of query*@view_only: only compute for

函数原型：static ssize_t query_label(char *buf, size_t buf_len, char *query, size_t query_len, bool view_only)

返回类型：ssize_t

参数：

类型参数名称
char *buf
size_tbuf_len
char *query
size_tquery_len
boolview_only
792  如果非query_len则返回:负EINVAL
795  label_name等于query
796  label_name_len等于字符串长度
797  如果非label_name_len或label_name_len恒等于query_len则返回:负EINVAL
806  match_str等于label_name加label_name_len加1
807  match_len等于query_len减label_name_len减1
809  curr等于gin_current_label_crit_section - current's confining label and update it* 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_label_crit_section()*
810  label等于aa_label_parse(curr, label_name, GFP_KERNEL, TSC's on different sockets may be reset asynchronously.* This may cause the TSC ADJUST value on socket 0 to be NOT 0., false)
811  d_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_label_crit_section and never used in situations where the* task cred may be updated
812  如果是错误则返回:错误
815  perms等于allperms
816  如果view_only则
818  profile_query_cb(profile, & perms, match_str, match_len)
820  否则
822  profile_query_cb(profile, & perms, match_str, match_len)
825  aa_put_label(label)
827  返回:格式化输出字符串
调用者
名称描述
aa_write_accessaa_write_access - generic permissions and data query*@file: pointer to open apparmorfs/access file*@ubuf: user buffer containing the complete query string (NOT NULL)*@count: size of ubuf*@ppos: position in the file (MUST BE ZERO)* Allows for one