From 3571066deedfe858ef37f09d6ad2160e5dd7b803 Mon Sep 17 00:00:00 2001
From: Anand Avati <avati@redhat.com>
Date: Mon, 27 Jan 2014 00:58:45 -0800
Subject: syncops: add support for custom PID

AFR self-heal needs to issue syncops with special PID. Extend
the custom UID/GID support to include custom PIDs

Change-Id: I736c0e177f862b029f203acc87f9eb46c8cb839b
BUG: 1021686
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/6888
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
---
 libglusterfs/src/syncop.c | 40 ++++++++++++++++++++++++++++++++++++++++
 libglusterfs/src/syncop.h | 11 +++++++++--
 2 files changed, 49 insertions(+), 2 deletions(-)

(limited to 'libglusterfs')

diff --git a/libglusterfs/src/syncop.c b/libglusterfs/src/syncop.c
index 7e78d4f6e..9705a7d54 100644
--- a/libglusterfs/src/syncop.c
+++ b/libglusterfs/src/syncop.c
@@ -169,6 +169,46 @@ out:
 	return ret;
 }
 
+int
+syncopctx_setfspid (void *pid)
+{
+	struct syncopctx *opctx = NULL;
+	int               ret = 0;
+
+	/* In args check */
+	if (!pid) {
+		ret = -1;
+		errno = EINVAL;
+		goto out;
+	}
+
+	opctx = syncopctx_getctx ();
+
+	/* alloc for this thread the first time */
+	if (!opctx) {
+		opctx = GF_CALLOC (1, sizeof (*opctx), gf_common_mt_syncopctx);
+		if (!opctx) {
+			ret = -1;
+			goto out;
+		}
+
+		ret = syncopctx_setctx (opctx);
+		if (ret != 0) {
+			GF_FREE (opctx);
+			opctx = NULL;
+			goto out;
+		}
+	}
+
+out:
+	if (opctx && pid) {
+		opctx->pid = *(pid_t *)pid;
+		opctx->valid |= SYNCOPCTX_PID;
+	}
+
+	return ret;
+}
+
 static void
 __run (struct synctask *task)
 {
diff --git a/libglusterfs/src/syncop.h b/libglusterfs/src/syncop.h
index 574918b9c..16f3833ba 100644
--- a/libglusterfs/src/syncop.h
+++ b/libglusterfs/src/syncop.h
@@ -31,6 +31,7 @@
 #define SYNCOPCTX_UID    0x00000001
 #define SYNCOPCTX_GID    0x00000002
 #define SYNCOPCTX_GROUPS 0x00000004
+#define SYNCOPCTX_PID    0x00000008
 
 struct synctask;
 struct syncproc;
@@ -164,6 +165,7 @@ struct syncopctx {
         int          grpsize;
         int          ngrps;
         gid_t       *groups;
+	pid_t        pid;
 };
 
 #define __yawn(args) do {                                       \
@@ -260,6 +262,7 @@ int synctask_setid (struct synctask *task, uid_t uid, gid_t gid);
 int syncopctx_setfsuid (void *uid);
 int syncopctx_setfsgid (void *gid);
 int syncopctx_setfsgroups (int count, const void *groups);
+int syncopctx_setfspid (void *pid);
 
 static inline call_frame_t *
 syncop_create_frame (xlator_t *this)
@@ -272,9 +275,13 @@ syncop_create_frame (xlator_t *this)
 	if (!frame)
 		return NULL;
 
-	frame->root->pid = getpid ();
-
 	opctx = syncopctx_getctx ();
+
+	if (opctx && (opctx->valid & SYNCOPCTX_PID))
+		frame->root->pid = opctx->pid;
+	else
+		frame->root->pid = getpid ();
+
 	if (opctx && (opctx->valid & SYNCOPCTX_UID))
 		frame->root->uid = opctx->uid;
 	else
-- 
cgit