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Commit 19e8a2f8 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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
parents 5d136594 5a813276

Documentation/filesystems/afs.txt

+27 −1
Original line number Diff line number Diff line
@@ -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.

fs/afs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -12,6 +12,8 @@ kafs-objs := \ 
	cell.o \

	cmservice.o \

	dir.o \

	dir_edit.o \

	dynroot.o \

	file.o \

	flock.o \

	fsclient.o \

fs/afs/addr_list.c

+3 −3
Original line number Diff line number Diff line
@@ -243,9 +243,9 @@ void afs_merge_fs_addr4(struct afs_addr_list *alist, __be32 xdr, u16 port) 
		    xport == a->sin6_port)

			return;

		if (xdr == a->sin6_addr.s6_addr32[3] &&

		    xport < a->sin6_port)

		    (u16 __force)xport < (u16 __force)a->sin6_port)

			break;

		if (xdr < a->sin6_addr.s6_addr32[3])

		if ((u32 __force)xdr < (u32 __force)a->sin6_addr.s6_addr32[3])

			break;

	}
@@ -280,7 +280,7 @@ void afs_merge_fs_addr6(struct afs_addr_list *alist, __be32 *xdr, u16 port) 
		    xport == a->sin6_port)

			return;

		if (diff == 0 &&

		    xport < a->sin6_port)

		    (u16 __force)xport < (u16 __force)a->sin6_port)

			break;

		if (diff < 0)

			break;

fs/afs/afs.h

+15 −12
Original line number Diff line number Diff line
@@ -67,10 +67,14 @@ typedef enum { 
} afs_callback_type_t;



struct afs_callback {

	struct afs_fid		fid;		/* file identifier */

	unsigned		version;	/* callback version */

	unsigned		expiry;		/* time at which expires */

	afs_callback_type_t	type;		/* type of callback */

	unsigned		version;	/* Callback version */

	unsigned		expiry;		/* Time at which expires */

	afs_callback_type_t	type;		/* Type of callback */

};



struct afs_callback_break {

	struct afs_fid		fid;		/* File identifier */

	struct afs_callback	cb;		/* Callback details */

};



#define AFSCBMAX 50	/* maximum callbacks transferred per bulk op */
@@ -123,21 +127,20 @@ typedef u32 afs_access_t; 
 * AFS file status information

 */

struct afs_file_status {

	unsigned		if_version;	/* interface version */

#define AFS_FSTATUS_VERSION	1

	u64			size;		/* file size */

	afs_dataversion_t	data_version;	/* current data version */

	time_t			mtime_client;	/* last time client changed data */

	time_t			mtime_server;	/* last time server changed data */

	unsigned		abort_code;	/* Abort if bulk-fetching this failed */



	afs_file_type_t		type;		/* file type */

	unsigned		nlink;		/* link count */

	u64			size;		/* file size */

	afs_dataversion_t	data_version;	/* current data version */

	u32			author;		/* author ID */

	kuid_t			owner;		/* owner ID */

	kgid_t			group;		/* group ID */

	u32			owner;		/* owner ID */

	u32			group;		/* group ID */

	afs_access_t		caller_access;	/* access rights for authenticated caller */

	afs_access_t		anon_access;	/* access rights for unauthenticated caller */

	umode_t			mode;		/* UNIX mode */

	time_t			mtime_client;	/* last time client changed data */

	time_t			mtime_server;	/* last time server changed data */

	s32			lock_count;	/* file lock count (0=UNLK -1=WRLCK +ve=#RDLCK */

};

fs/afs/afs_fs.h

+2 −0
Original line number Diff line number Diff line
@@ -31,10 +31,12 @@ enum AFS_FS_Operations { 
	FSGETVOLUMEINFO		= 148,	/* AFS Get information about a volume */

	FSGETVOLUMESTATUS	= 149,	/* AFS Get volume status information */

	FSGETROOTVOLUME		= 151,	/* AFS Get root volume name */

	FSBULKSTATUS		= 155,	/* AFS Fetch multiple file statuses */

	FSSETLOCK		= 156,	/* AFS Request a file lock */

	FSEXTENDLOCK		= 157,	/* AFS Extend a file lock */

	FSRELEASELOCK		= 158,	/* AFS Release a file lock */

	FSLOOKUP		= 161,	/* AFS lookup file in directory */

	FSINLINEBULKSTATUS	= 65536, /* AFS Fetch multiple file statuses with inline errors */

	FSFETCHDATA64		= 65537, /* AFS Fetch file data */

	FSSTOREDATA64		= 65538, /* AFS Store file data */

	FSGIVEUPALLCALLBACKS	= 65539, /* AFS Give up all outstanding callbacks on a server */