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 20:50:15
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：smack_file_ioctl - Smack check on ioctls*@file: the object*@cmd: what to do*@arg: unused* Relies heavily on the correct use of the ioctl command conventions.* Returns 0 if allowed, error code otherwise

函数原型：static int smack_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)

返回类型：int

参数：

类型参数名称
struct file *file
unsigned intcmd
unsigned longarg
1555  rc等于0
1557  inode等于file_inode(file)
1559  如果此条件成立可能性小(为编译器优化)(IS_PRIVATE(inode))则返回:0
1562  some inline functions to set up audit data* they do nothing if CONFIG_AUDIT is not set
1563  smk_ad_setfield_u_fs_path( & ad, f_path)
1565  如果_IOC_DIR(cmd)按位与_IOC_WRITE则
1566  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
1567  rc等于smk_bu_file(file, MAY_WRITE, rc)
1570  如果rc恒等于0且_IOC_DIR(cmd)按位与_IOC_READ则
1571  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
1572  rc等于smk_bu_file(file, MAY_READ, rc)
1575  返回:rc