Provides information about an extended attribute.
Extended attributes are name:value pairs associated with the file system objects (such as files, directories, and symlinks). They are extensions to the normal attributes that are associated with all of the objects in the file system (that is, the stat(2) data).
Do not define an extended attribute name with the 8-character prefix "(0xF8)SYSTEM(0xF8)". Prefix "(0xF8)SYSTEM(0xF8)" is reserved for system use only.
The statea subroutine gets information about the extended attribute name name associated with the file system object specified by path. The fstatea subroutine is identical to statea, except that it takes a file descriptor instead of a path. The lstatea subroutine is identical to statea, except, in the case of a symbolic link, the link itself is interrogated rather than the file that it refers to.
The statea subroutine uses a stat64x structure to return the information. Note that all values in this structure are 64-bit, including the devices and size. A normal struct stat cannot be passed to statea. For more information, see the stat, fstat, lstat, statx, fstatx, statxat, fstatat, fullstat, ffullstat, stat64, fstat64, lstat64, stat64x, fstat64x, lstat64x, or stat64xat Subroutine.
|path||The path name of the file.|
|name||The name of the extended attribute. An extended attribute name is a NULL-terminated string.|
|buffer||A pointer to the stat structure in which information is returned.|
|filedes||A file descriptor for the file.|
If the statea subroutine succeeds, 0 is returned. Upon failure, -1 is returned and errno is set appropriately.
|EACCES||Caller lacks read permission on the base file, or lacks the appropriate ACL privileges for named attribute lookup.|
|EFAULT||A bad address was passed for path, name, or buffer.|
|EFORMAT||File system is capable of supporting EAs, but EAs are disabled.|
|EINVAL||A path-like name should not be used (such as zml/file, . and ..).|
|ENAMETOOLONG||The path or name value is too long.|
|ENOATTR||No attribute named name is present.|
|ENOTSUP||Extended attributes are not supported by the file system.|