smugfs(4) - Plan 9 from User Space

| SMUGFS(4) | SMUGFS(4)
| NAME
| smugfs – file system access to SmugMug photo sharing
SYNOPSIS
| `smugfs` [ `−DFH` ] [ `−k` keypattern ] [ `−m` mtpt ] [ `−s` srvname ]
DESCRIPTION
| Smugfs is a user-level file system that provides access to images stored on the SmugMug photo sharing service. It logs in after obtaining a password from factotum(4) using `server=smugmug.com` and keypattern (if any) as key criteria (see auth(3)). Then smugfs serves a virtual directory tree mounted at mtpt (default `/n/smug`) and posted at srvname , if the `−s` option is given.
The directory tree is arranged in five levels: root, user, category, album, and image. For example, `/n/smug/cmac/` is a user directory, `/n/smug/cmac/People/` is a category directory, `/n/smug/cmac/People/Friends/` is an album directory, and `/n/smug/cmac/albums/Friends/2631/` is an image directory.
SmugMug allows fine-grained classification via subcategories, but subcategories are not yet implemented.
All directories contain a special control file named `ctl`; text commands written to `ctl` change smugfs’s behavior or implement functionality that does not fit nicely into the file system interface.
Smugfs caches information about users, categories, albums, and images. If changes are made outside of smugfs (for example, using a web browser), the cache may need to be discarded. Writing the string `sync` to a directory’s `ctl` file causes smugfs to discard all cached information used to present that directory and its children. Thus, writing `sync` to the root `ctl` file discards all of smugfs ’s cached information. Root directory The root directory contains directories named after users. By default, it contains only a directory for the logged-in user, but other directories will be created as needed to satisfy directory lookups.
In addition to user directories, the root directory contains three special files: `ctl`, `rpclog`, and `uploads`. Reading `rpclog` returns a list of recent RPCs issued to the SmugMug API server. Reads at the end of the file block until a new RPC is issued. The `uploads` file lists the file upload queue (q.v.). User directories User directories contain category directories named after the categories. SmugMug pre-defines a variety of categories, so it is common to have many categories that do not contain albums.
In a user directory, creating a new directory creates a new category on SmugMug. Similarly, renaming or removing a category directory renames or removes the category on SmugMug. Categories cannot be removed if they contain albums.
User directories also contain a directory named `albums` that itself contains all of that user’s albums. Category directories Each category directory contains album directories named using the album’s title.
In a category directory, creating a new directory creates a new album on SmugMug. Similarly, renaming or removing an album directory renames or removes the album on SmugMug. Albums cannot be removed if they contain images. Album directories Each album directory contains image directories named using the image’s decimal SmugMug ID. Image directories cannot be created or renamed, but they can be removed. Removing an image directory removes the image from the album on SmugMug.
Album directories also contain three special files, `ctl`, `settings`, and `url`.
The `settings` file contains the album settings in textual form, one setting per line. Each line represents a single setting and is formatted as an alphabetic setting name followed by a single tab followed by the value. Many settings can be changed by writing new setting lines, in the same format, to the `settings` file.
Copying a file into the album directory queues it for uploading to SmugMug to be added to the album. Files disappear from the album directory once they have finished uploading, replaced by new image directories. The `uploads` file in the root directory lists all pending uploads, which are stored temporarily in `/var/tmp`. Image directories Each image directory contains an image file, named with its original name, if available. If the image belongs to another user, SmugMug does not expose the original name, so the file is named nnnn`.jpg`, where nnnn is the SmugMug image ID number. The file content is the original image or else the largest image available.
The directory contains a `settings` file holding per-image settings, similar to the file in the album directory; and a `url` file, containing URLs to the various sized images on the SmugMug server.
EXAMPLES
| Mount smugfs on `/n/smug`; the current user must have write access to `/n/smug` and `/dev/fuse`.
| `% smugfs` Watch API calls as they execute: `% cat /n/smug/rpclog &` Create a new album in the Vacation category and fill it with photos: `% mkdir /n/smug/you/Vacation/Summer % cp *.jpg /n/smug/you/Vacation/Summer
`
The photos are now uploading in the background. Wait for the uploads to finish:
| `% while(test −s /n/smug/uploads) sleep 60
`
Make the album publicly viewable and share it.
| `% echo public 1 >/n/smug/you/Vacation/Summer/settings % cat /n/smug/you/Vacation/Summer/url | mail friends`
SOURCE
| `/usr/lib/plan9/src/cmd/smugfs`
SEE ALSO
| SmugMug, `http://smugmug.com/`
BUGS
| If multiple categories or albums have the same name, only one will be accessible via the file system interface. Renaming the accessible one via Unix’s mv(1) will resolve the problem.
Boolean values appear as `true` and `false` in settings files but must be changed using `1` and `0`.