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afs: Get an AFS3 ACL as an xattr

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Implement an xattr on AFS files called "afs.acl" that retrieves a file's
ACL.  It returns the raw AFS3 ACL from the result of calling FS.FetchACL,
leaving any interpretation to userspace.

Note that whilst YFS servers will respond to FS.FetchACL, this will render
a more-advanced YFS ACL down.  Use "afs.yfs.acl" instead for that.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2019-04-25 14:26:52 +01:00
parent a2f611a3dc
commit 260f082bae
5 changed files with 184 additions and 0 deletions
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include/trace/events/afs.h
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@@ -33,6 +33,7 @@ enum afs_call_trace {
enum afs_fs_operation {
afs_FS_FetchData = 130, /* AFS Fetch file data */
afs_FS_FetchACL = 131, /* AFS Fetch file ACL */
afs_FS_FetchStatus = 132, /* AFS Fetch file status */
afs_FS_StoreData = 133, /* AFS Store file data */
afs_FS_StoreStatus = 135, /* AFS Store file status */