stat, wstat - inquire or change file attributes — Inferno 1ed

stat, wstat - inquire or change file attributes

Tstat  tag [2] fid [2]
Rstat  tag [2] fid [2] stat [116]
Twstat tag [2] fid [2] stat [116]
Rwstat tag [2] fid [2]


name [28]	File name. If the file is the root directory of the server the name must be /.
uid [28]	Owner name
gid [28]	Group name
qid.path [4]	File server's identification for the file. See Inferno Communications Protocol, Styx.
qid.vers [4]	Version number for given path. See Inferno Communications Protocol, Styx.
mode [4]	Permissions and flags. The mode contains permission bits as described in Inferno Devices in Chapter 2 and 16r80000000 if this file is a directory.
atime [4]	The last access time. The atime field records the last read of the contents; it is also set whenever mtime is set. For a directory, atime is set by an attach, walk, or create, all whether successful or not. The value is measured in seconds since the epoch (Jan 1 00:00 1970 GMT).
mtime [4]	The last modification time. The mtime field reflects the time of the last change of content. For a plain file, mtime is the time of the most recent create, open with truncation, or write; for a directory it is the time of the most recent remove, create, or wstat of a file in the directory. The value is measured in seconds since the epoch (Jan 1 00:00 1970 GMT).
length [8]	Length of file in bytes. Directories and most files representing devices have, by convention, a length of 0.
type [2]	The device type for the file, a single character representing the root of a file tree implemented by a particular kernel device driver.
dev [2]	See discussion of dev in Inferno Communications Protocol, Styx.


name	The name can be changed by anyone with write permission in the parent directory. It is an error to change the name of a file to that of an existing file.
mode and mtime	The mode and mtime can be changed by the owner of the file. The directory bit cannot be changed by a wstat. All the other defined permission and mode bits can be change.
gid	The gid can be changed: by the owner if also a member of the new group. (See Inferno Communications Protocol, Styx for more information about permissions and users for users and groups).