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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-12 11:59:06 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-12 11:59:06 -0700 |
commit | 19e8a2f875a56009c0ce30389964aca452a85510 (patch) | |
tree | 22ad79d41c34555444030f34bebb979367d7ef32 /Documentation | |
parent | 5d1365940a68dd57b031b6e3c07d7d451cd69daf (diff) | |
parent | 5a8132761609bd7e42db642d6f157140d5bf2ae8 (diff) | |
download | linux-19e8a2f875a56009c0ce30389964aca452a85510.tar.gz |
Merge branch 'afs-dh' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull AFS updates from Al Viro: "The AFS series posted by dhowells depended upon lookup_one_len() rework; now that prereq is in the mainline, that series had been rebased on top of it and got some exposure and testing..." * 'afs-dh' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: afs: Do better accretion of small writes on newly created content afs: Add stats for data transfer operations afs: Trace protocol errors afs: Locally edit directory data for mkdir/create/unlink/... afs: Adjust the directory XDR structures afs: Split the directory content defs into a header afs: Fix directory handling afs: Split the dynroot stuff out and give it its own ops tables afs: Keep track of invalid-before version for dentry coherency afs: Rearrange status mapping afs: Make it possible to get the data version in readpage afs: Init inode before accessing cache afs: Introduce a statistics proc file afs: Dump bad status record afs: Implement @cell substitution handling afs: Implement @sys substitution handling afs: Prospectively look up extra files when doing a single lookup afs: Don't over-increment the cell usage count when pinning it afs: Fix checker warnings vfs: Remove the const from dir_context::actor
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/filesystems/afs.txt | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/Documentation/filesystems/afs.txt b/Documentation/filesystems/afs.txt index c5254f6d234d..8c6ea7b41048 100644 --- a/Documentation/filesystems/afs.txt +++ b/Documentation/filesystems/afs.txt @@ -11,7 +11,7 @@ Contents: - Proc filesystem. - The cell database. - Security. - - Examples. + - The @sys substitution. ======== @@ -230,3 +230,29 @@ If a file is opened with a particular key and then the file descriptor is passed to a process that doesn't have that key (perhaps over an AF_UNIX socket), then the operations on the file will be made with key that was used to open the file. + + +===================== +THE @SYS SUBSTITUTION +===================== + +The list of up to 16 @sys substitutions for the current network namespace can +be configured by writing a list to /proc/fs/afs/sysname: + + [root@andromeda ~]# echo foo amd64_linux_26 >/proc/fs/afs/sysname + +or cleared entirely by writing an empty list: + + [root@andromeda ~]# echo >/proc/fs/afs/sysname + +The current list for current network namespace can be retrieved by: + + [root@andromeda ~]# cat /proc/fs/afs/sysname + foo + amd64_linux_26 + +When @sys is being substituted for, each element of the list is tried in the +order given. + +By default, the list will contain one item that conforms to the pattern +"<arch>_linux_26", amd64 being the name for x86_64. |