From 36281caa839f4441c793c81d2e3cc5ea44ad5aa2 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 4 Mar 2012 18:13:56 -0500 Subject: NFSv4: Further clean-ups of delegation stateid validation Change the name to reflect what we're really doing: testing two stateids for whether or not they match according the the rules in RFC3530 and RFC5661. Move the code from callback_proc.c to nfs4proc.c Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f31fcea1af7..b0647b38740 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6271,8 +6271,31 @@ static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) } while (exception.retry); return err; } + +static bool nfs41_match_stateid(const nfs4_stateid *s1, + const nfs4_stateid *s2) +{ + if (memcmp(s1->stateid.other, s2->stateid.other, + sizeof(s1->stateid.other)) != 0) + return false; + + if (s1->stateid.seqid == s2->stateid.seqid) + return true; + if (s1->stateid.seqid == 0 || s2->stateid.seqid == 0) + return true; + + return false; +} + #endif /* CONFIG_NFS_V4_1 */ +static bool nfs4_match_stateid(const nfs4_stateid *s1, + const nfs4_stateid *s2) +{ + return memcmp(s1->data, s2->data, sizeof(s1->data)) == 0; +} + + struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, @@ -6331,7 +6354,7 @@ struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { .minor_version = 0, .call_sync = _nfs4_call_sync, - .validate_stateid = nfs4_validate_delegation_stateid, + .match_stateid = nfs4_match_stateid, .find_root_sec = nfs4_find_root_sec, .reboot_recovery_ops = &nfs40_reboot_recovery_ops, .nograce_recovery_ops = &nfs40_nograce_recovery_ops, @@ -6342,7 +6365,7 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { .minor_version = 1, .call_sync = _nfs4_call_sync_session, - .validate_stateid = nfs41_validate_delegation_stateid, + .match_stateid = nfs41_match_stateid, .find_root_sec = nfs41_find_root_sec, .reboot_recovery_ops = &nfs41_reboot_recovery_ops, .nograce_recovery_ops = &nfs41_nograce_recovery_ops, -- cgit v1.2.3-18-g5258