vfs_getxattr

函数名称：vfs_getxattr_alloc - allocate memory, if necessary, before calling getxattr* Allocate memory, if not already allocated, or re-allocate correct size,* before retrieving the extended attribute.

函数原型：ssize_t vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value, size_t xattr_size, gfp_t flags)

返回类型：ssize_t

参数：

类型	参数	名称
struct dentry *	dentry
const char *	name
char **	xattr_value
size_t	xattr_size
gfp_t	flags

271

inode等于 Where the name belongs to - NULL is * negative

272

value等于xattr_value

275

error等于Check permissions for extended attribute access. This is a bit complicated* because different namespaces have very different rules.

276

如果error则返回:error

279

handler等于Find the xattr_handler with the matching prefix.

280

如果是错误则返回:错误

282

如果非get则返回:负EOPNOTSUPP

284

error等于get(handler, dentry, inode, name, NULL, 0)

285

如果error小于0则返回:error

288

如果非value或error大于xattr_size则

289

value等于krealloc - reallocate memory. The contents will remain unchanged.*@p: object to reallocate memory for.*@new_size: how many bytes of memory are required.*@flags: the type of memory to allocate.* The contents of the object pointed to are preserved up to the

290

如果非value则返回:负ENOMEM

292

memset(value, 0, error + 1)

295

error等于get(handler, dentry, inode, name, value, error)

296

xattr_value等于value

297

返回:error

**调用者**
名称	描述
aa_xattrs_match	aa_xattrs_match - check whether a file matches the xattrs defined in profile@bprm: binprm struct for the process to validate@profile: profile to match against (NOT NULL)@state: state to start match in Returns: number of extended attributes that
ima_read_xattr
evm_verify_hmac	vm_verify_hmac - calculate and compare the HMAC with the EVM xattr* Compute the HMAC on the dentry's protected set of extended attributes* and compare it against the stored security
evm_calc_hmac_or_hash	Calculate the HMAC value across the set of protected security xattrs.* Instead of retrieving the requested xattr, for performance, calculate* the hmac using the requested xattr value. Don't alloc/free memory for
evm_is_immutable

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告