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afs: Add some protocol defs 

Add some protocol definitions, including max field lengths, flag defs, an
XDR-encoded UUID def, more VL operation IDs and more fileserver abort
codes.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2017-11-02 15:27:46 +00:00
parent 9ed900b116
commit 91a90380ef
3 changed files with 35 additions and 9 deletions
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25
fs/afs/afs.h
View File

@ -14,11 +14,14 @@
#include <linux/in.h>
#define AFS_MAXCELLNAME 64 /* maximum length of a cell name */
#define AFS_MAXVOLNAME 64 /* maximum length of a volume name */
#define AFSNAMEMAX 256 /* maximum length of a filename plus NUL */
#define AFSPATHMAX 1024 /* maximum length of a pathname plus NUL */
#define AFSOPAQUEMAX 1024 /* maximum length of an opaque field */
#define AFS_MAXCELLNAME 64 /* Maximum length of a cell name */
#define AFS_MAXVOLNAME 64 /* Maximum length of a volume name */
#define AFS_MAXNSERVERS 8 /* Maximum servers in a basic volume record */
#define AFS_NMAXNSERVERS 13 /* Maximum servers in a N/U-class volume record */
#define AFS_MAXTYPES 3 /* Maximum number of volume types */
#define AFSNAMEMAX 256 /* Maximum length of a filename plus NUL */
#define AFSPATHMAX 1024 /* Maximum length of a pathname plus NUL */
#define AFSOPAQUEMAX 1024 /* Maximum length of an opaque field */
typedef unsigned afs_volid_t;
typedef unsigned afs_vnodeid_t;
@ -176,4 +179,16 @@ struct afs_volume_status {
#define AFS_BLOCK_SIZE 1024
/*
* XDR encoding of UUID in AFS.
*/
struct afs_uuid__xdr {
__be32 time_low;
__be32 time_mid;
__be32 time_hi_and_version;
__be32 clock_seq_hi_and_reserved;
__be32 clock_seq_low;
__be32 node[6];
};
#endif /* AFS_H */

4
fs/afs/afs_fs.h
View File

@ -40,6 +40,7 @@ enum AFS_FS_Operations {
};
enum AFS_FS_Errors {
VRESTARTING = -100, /* Server is restarting */
VSALVAGE = 101, /* volume needs salvaging */
VNOVNODE = 102, /* no such file/dir (vnode) */
VNOVOL = 103, /* no such volume or volume unavailable */
@ -51,6 +52,9 @@ enum AFS_FS_Errors {
VOVERQUOTA = 109, /* volume's maximum quota exceeded */
VBUSY = 110, /* volume is temporarily unavailable */
VMOVED = 111, /* volume moved to new server - ask this FS where */
VIO = 112, /* I/O error in volume */
VSALVAGING = 113, /* Volume is being salvaged */
VRESTRICTED = 120, /* Volume is restricted from using */
};
#endif /* AFS_FS_H */

15
fs/afs/afs_vl.h
View File

@ -18,9 +18,12 @@
#define VL_SERVICE 52 /* RxRPC service ID for the Volume Location service */
enum AFSVL_Operations {
VLGETENTRYBYID = 503, /* AFS Get Cache Entry By ID operation ID */
VLGETENTRYBYNAME = 504, /* AFS Get Cache Entry By Name operation ID */
VLPROBE = 514, /* AFS Probe Volume Location Service operation ID */
VLGETENTRYBYID = 503, /* AFS Get VLDB entry by ID */
VLGETENTRYBYNAME = 504, /* AFS Get VLDB entry by name */
VLPROBE = 514, /* AFS probe VL service */
VLGETENTRYBYIDU = 526, /* AFS Get VLDB entry by ID (UUID-variant) */
VLGETENTRYBYNAMEU = 527, /* AFS Get VLDB entry by name (UUID-variant) */
VLGETADDRSU = 533, /* AFS Get addrs for fileserver */
};
enum AFSVL_Errors {
@ -74,11 +77,15 @@ struct afs_vldbentry {
struct in_addr addr; /* server address */
unsigned partition; /* partition ID on this server */
unsigned flags; /* server specific flags */
#define AFS_VLSF_NEWREPSITE 0x0001 /* unused */
#define AFS_VLSF_NEWREPSITE 0x0001 /* Ignore all 'non-new' servers */
#define AFS_VLSF_ROVOL 0x0002 /* this server holds a R/O instance of the volume */
#define AFS_VLSF_RWVOL 0x0004 /* this server holds a R/W instance of the volume */
#define AFS_VLSF_BACKVOL 0x0008 /* this server holds a backup instance of the volume */
#define AFS_VLSF_UUID 0x0010 /* This server is referred to by its UUID */
#define AFS_VLSF_DONTUSE 0x0020 /* This server ref should be ignored */
} servers[8];
};
#define AFS_VLDB_MAXNAMELEN 65
#endif /* AFS_VL_H */