tomoyo_scan

函数名称：moyo_scan_bprm - Scan "struct linux_binprm".*@ee: Pointer to "struct tomoyo_execve".*@argc: Length of @argc.*@argv: Pointer to "struct tomoyo_argv".*@envc: Length of @envp.*@envp: Poiner to "struct tomoyo_envp".* Returns true on success, false otherwise.

函数原型：static bool tomoyo_scan_bprm(struct tomoyo_execve *ee, const u16 argc, const struct tomoyo_argv *argv, const u16 envc, const struct tomoyo_envp *envp)

返回类型：bool

参数：

类型	参数	名称
struct tomoyo_execve *	ee
const u16	argc
const struct tomoyo_argv *	argv
const u16	envc
const struct tomoyo_envp *	envp

130

如果非tomoyo_dump_page(bprm, pos, dump)则

131

result = false

132

转到:out

134

pos加等于PAGE_SIZE减offset

135

当offset小于PAGE_SIZE 循环

137

kaddr等于Contents of "page". Size is PAGE_SIZE.

138

c等于kaddr[offset++]

140

如果c且arg_len小于TOMOYO_EXEC_TMPSIZE减10则

141

如果c恒等于'\\'则

142

arg_ptr[arg_len++]等于'\\'

143

arg_ptr[arg_len++]等于'\\'

144

否则如果c大于' '且c小于127则

145

arg_ptr[arg_len++]等于c

146

否则

147

arg_ptr[arg_len++]等于'\\'

148

arg_ptr[arg_len++]等于c右移6位的值加'0'

149

arg_ptr[arg_len++]等于c右移3位按位与7的值加'0'

151

arg_ptr[arg_len++]等于c按位与7的值加'0'

153

否则

154

arg_ptr[arg_len]等于'\0'

156

如果c则继续下一循环

159

如果argv_count则

160

如果非moyo_argv - Check argv[] in "struct linux_binbrm".*@index: Index number of @arg_ptr.*@arg_ptr: Contents of argv[@index].*@argc: Length of @argv.*@argv: Pointer to "struct tomoyo_argv".*@checked: Set to true if @argv[@index] was found.则

163

result = false

164

退出

166

argv_count自减

167

否则如果envp_count则

168

cp等于strchr - Find the first occurrence of the character c in the string s.*@s: the string to be searched*@c: the character to search for

170

如果cp则

171

cp等于'\0'

172

如果非moyo_envp - Check envp[] in "struct linux_binbrm".*@env_name: The name of environment variable.*@env_value: The value of environment variable.*@envc: Length of @envp.*@envp: Pointer to "struct tomoyo_envp".则

175

result = false

176

退出

179

envp_count自减

180

否则

181

退出

183

arg_len等于0

185

offset等于0

186

如果非result则退出

194

以i小于argc 循环

195

如果checked[i]则继续下一循环

201

如果is_not则继续下一循环

203

result = false

204

退出

206

以i小于envc 循环

207

如果checked[argc + i]则继续下一循环

213

如果非value且非is_not或value且is_not则继续下一循环

216

result = false

217

退出

**调用者**
名称	描述
tomoyo_condition	moyo_condition - Check condition part.@r: Pointer to "struct tomoyo_request_info".@cond: Pointer to "struct tomoyo_condition". Maybe NULL.* Returns true on success, false otherwise.* Caller holds tomoyo_read_lock().

函数逻辑报告