函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\smack\smack_lsm.c Create Date:2022-07-27 20:50:37
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：smack_file_receive - Smack file receive check*@file: the object* Returns 0 if current has access, error code otherwise

函数原型：static int smack_file_receive(struct file *file)

返回类型：int

参数：

类型参数名称
struct file *file
1825  may等于0
1827  inode等于file_inode(file)
1832  如果此条件成立可能性小(为编译器优化)(IS_PRIVATE(inode))则返回:0
1835  some inline functions to set up audit data* they do nothing if CONFIG_AUDIT is not set
1836  smk_ad_setfield_u_fs_path( & ad, f_path)
1838  如果s_magic恒等于SOCKFS_MAGIC则
1839  sock等于SOCKET_I(inode)
1840  ssp等于sk_security
1841  tsp等于smack_cred(current_cred - Access the current task's subjective credentials* Access the subjective credentials of the current task. RCU-safe,* since nobody else can modify it.())
1848  rc等于smk_access( label for access control , outbound label , MAY_WRITE, & ad)
1849  rc等于smk_bu_file(file, may, rc)
1850  如果rc小于0则返回:rc
1852  rc等于smk_access( inbound label , label for access control , MAY_WRITE, & ad)
1853  rc等于smk_bu_file(file, may, rc)
1854  返回:rc
1859  如果f_mode按位与le is open for reading 则may等于MAY_READ
1861  如果f_mode按位与le is open for writing 则may或等于MAY_WRITE
1864  rc等于smk_curacc - determine if current has a specific access to an object*@obj_known: a pointer to the object's Smack label entry*@mode: the access requested, in "MAY" format*@a : common audit data* This function checks the current subject label/object label
1865  rc等于smk_bu_file(file, may, rc)
1866  返回:rc