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authorBenjamin Coddington <bcodding@redhat.com>2018-11-01 13:39:49 -0400
committerJ. Bruce Fields <bfields@redhat.com>2018-12-14 12:52:16 -0500
commitb8eee0e90f9797b747113638bc75e739b192ad38 (patch)
tree571a45f36113efaabf31d68f4e43ff83a9ec4e68
parent03b31f489614d8ac7a08bd458451a037cc0b1149 (diff)
lockd: Show pid of lockd for remote locks
Commit 9d5b86ac13c5 ("fs/locks: Remove fl_nspid and use fs-specific l_pid for remote locks") specified that the l_pid returned for F_GETLK on a local file that has a remote lock should be the pid of the lock manager process. That commit, while updating other filesystems, failed to update lockd, such that locks created by lockd had their fl_pid set to that of the remote process holding the lock. Fix that here to be the pid of lockd. Also, fix the client case so that the returned lock pid is negative, which indicates a remote lock on a remote file. Fixes: 9d5b86ac13c5 ("fs/locks: Remove fl_nspid and use fs-specific...") Cc: stable@vger.kernel.org Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
-rw-r--r--fs/lockd/clntproc.c2
-rw-r--r--fs/lockd/xdr.c4
-rw-r--r--fs/lockd/xdr4.c4
3 files changed, 5 insertions, 5 deletions
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index d20b92f271c2..0a67dd4250e9 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -442,7 +442,7 @@ nlmclnt_test(struct nlm_rqst *req, struct file_lock *fl)
fl->fl_start = req->a_res.lock.fl.fl_start;
fl->fl_end = req->a_res.lock.fl.fl_end;
fl->fl_type = req->a_res.lock.fl.fl_type;
- fl->fl_pid = 0;
+ fl->fl_pid = -req->a_res.lock.fl.fl_pid;
break;
default:
status = nlm_stat_to_errno(req->a_res.status);
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index 7147e4aebecc..9846f7e95282 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -127,7 +127,7 @@ nlm_decode_lock(__be32 *p, struct nlm_lock *lock)
locks_init_lock(fl);
fl->fl_owner = current->files;
- fl->fl_pid = (pid_t)lock->svid;
+ fl->fl_pid = current->tgid;
fl->fl_flags = FL_POSIX;
fl->fl_type = F_RDLCK; /* as good as anything else */
start = ntohl(*p++);
@@ -269,7 +269,7 @@ nlmsvc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
memset(lock, 0, sizeof(*lock));
locks_init_lock(&lock->fl);
lock->svid = ~(u32) 0;
- lock->fl.fl_pid = (pid_t)lock->svid;
+ lock->fl.fl_pid = current->tgid;
if (!(p = nlm_decode_cookie(p, &argp->cookie))
|| !(p = xdr_decode_string_inplace(p, &lock->caller,
diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c
index 7ed9edf9aed4..70154f376695 100644
--- a/fs/lockd/xdr4.c
+++ b/fs/lockd/xdr4.c
@@ -119,7 +119,7 @@ nlm4_decode_lock(__be32 *p, struct nlm_lock *lock)
locks_init_lock(fl);
fl->fl_owner = current->files;
- fl->fl_pid = (pid_t)lock->svid;
+ fl->fl_pid = current->tgid;
fl->fl_flags = FL_POSIX;
fl->fl_type = F_RDLCK; /* as good as anything else */
p = xdr_decode_hyper(p, &start);
@@ -266,7 +266,7 @@ nlm4svc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
memset(lock, 0, sizeof(*lock));
locks_init_lock(&lock->fl);
lock->svid = ~(u32) 0;
- lock->fl.fl_pid = (pid_t)lock->svid;
+ lock->fl.fl_pid = current->tgid;
if (!(p = nlm4_decode_cookie(p, &argp->cookie))
|| !(p = xdr_decode_string_inplace(p, &lock->caller,