函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\binfmt_aout.c Create Date:2022-07-29 11:01:39
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：reate_aout_tables() parses the env- and arg-strings in new user* memory and creates the pointer tables from them, and puts their* addresses on the "stack", returning the new stack pointer value.

函数原型：static unsigned long __user *create_aout_tables(char __user *p, struct linux_binprm *bprm)

返回类型：unsigned long

参数：

类型参数名称
char __user *p
struct linux_binprm *bprm
61  __user乘__user乘argv
62  __user乘__user乘envp
63  __user乘sp
64  argc等于argc
65  envc等于envc
67  sp乘__user等于负*的长度按位与p
81  sp减等于envc加1
82  envp等于sp
83  sp减等于argc加1
84  argv等于sp
86  put_user - Write a simple value into user space((unsignedlong)envp, --sp)
87  put_user - Write a simple value into user space((unsignedlong)argv, --sp)
89  put_user - Write a simple value into user space(argc, --sp)
90  arg_start等于p
91  当argc自减大于0循环
93  put_user - Write a simple value into user space(p, argv++)
94  循环
95  Careful: we have to cast the result to the type of the pointer* for sign reasons(c, p++)
96  当c循环
98  put_user - Write a simple value into user space(NULL, argv)
99  arg_end等于env_start等于p
100  当envc自减大于0循环
102  put_user - Write a simple value into user space(p, envp++)
103  循环
104  Careful: we have to cast the result to the type of the pointer* for sign reasons(c, p++)
105  当c循环
107  put_user - Write a simple value into user space(NULL, envp)
108  env_end等于p
109  返回:sp
调用者
名称描述
load_aout_binaryThese are the functions used to load a.out style executables and shared* libraries. There is no binary dependent code anywhere else.