diff options
Diffstat (limited to 'fs/afs/main.c')
| -rw-r--r-- | fs/afs/main.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/fs/afs/main.c b/fs/afs/main.c index 0cf1b021ad54..40c2704e7557 100644 --- a/fs/afs/main.c +++ b/fs/afs/main.c @@ -40,6 +40,51 @@ struct cachefs_netfs afs_cache_netfs = { }; #endif +struct afs_uuid afs_uuid; + +/* + * get a client UUID + */ +static int __init afs_get_client_UUID(void) +{ + struct timespec ts; + u64 uuidtime; + u16 clockseq; + int ret; + + /* read the MAC address of one of the external interfaces and construct + * a UUID from it */ + ret = afs_get_MAC_address(afs_uuid.node); + if (ret < 0) + return ret; + + getnstimeofday(&ts); + uuidtime = (u64) ts.tv_sec * 1000 * 1000 * 10; + uuidtime += ts.tv_nsec / 100; + uuidtime += AFS_UUID_TO_UNIX_TIME; + afs_uuid.time_low = uuidtime; + afs_uuid.time_mid = uuidtime >> 32; + afs_uuid.time_hi_and_version = (uuidtime >> 48) & AFS_UUID_TIMEHI_MASK; + afs_uuid.time_hi_and_version = AFS_UUID_VERSION_TIME; + + get_random_bytes(&clockseq, 2); + afs_uuid.clock_seq_low = clockseq; + afs_uuid.clock_seq_hi_and_reserved = + (clockseq >> 8) & AFS_UUID_CLOCKHI_MASK; + afs_uuid.clock_seq_hi_and_reserved = AFS_UUID_VARIANT_STD; + + _debug("AFS UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", + afs_uuid.time_low, + afs_uuid.time_mid, + afs_uuid.time_hi_and_version, + afs_uuid.clock_seq_hi_and_reserved, + afs_uuid.clock_seq_low, + afs_uuid.node[0], afs_uuid.node[1], afs_uuid.node[2], + afs_uuid.node[3], afs_uuid.node[4], afs_uuid.node[5]); + + return 0; +} + /* * initialise the AFS client FS module */ @@ -49,6 +94,10 @@ static int __init afs_init(void) printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 registering.\n"); + ret = afs_get_client_UUID(); + if (ret < 0) + return ret; + /* register the /proc stuff */ ret = afs_proc_init(); if (ret < 0) |