Plan 9 - man page for walk (plan9 section 5)
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walk - descend a directory hierarchy
Twalk tag fid name
Rwalk tag fid qid
The walk request looks for the file name in the directory represented by fid.
For the walk to succeed, the file identified by fid must be a directory, and the implied
user of the request must have permission to search the directory (see intro(5)).
After a successful walk, fid represents the specified file. The qid for the new file is
returned with the walk reply message.
A walk of the name .. in the root directory of a server is a no-op.
A call to chdir(2) causes a walk. One or more walk messages may be generated by any of
the following calls, which evaluate file names: bind, create, exec, mount, open, remove,
stat, unmount, wstat. The file name element . (dot) is interpreted locally and is not
transmitted in walk messages.
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