From 08d502c3b05c6f7831bb4cc764bd458b405a99b1 Mon Sep 17 00:00:00 2001
From: Ravishankar N <ravishankar@redhat.com>
Date: Thu, 14 Mar 2019 18:41:11 +0530
Subject: gfapi: add function to set client-pid

This api offers the ability to set the pid of a client to a particular
value, identical to how gluster fuse clients provide the --client-pid
option. This is an internal API to be used by gluster processes only. See
https://lists.gluster.org/pipermail/gluster-devel/2019-March/055925.html
for more details. Currently glfsheal is the only proposed consumer.

updates: bz#1689250
Change-Id: I0620be2127d79d69cdd57cffb29bba44e6e5da1f
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
---
 api/src/gfapi.aliases   |  1 +
 api/src/gfapi.map       |  4 ++++
 api/src/glfs-internal.h |  6 ++++++
 api/src/glfs.c          | 15 +++++++++++++++
 4 files changed, 26 insertions(+)

(limited to 'api')

diff --git a/api/src/gfapi.aliases b/api/src/gfapi.aliases
index 25e2d74e196..09c0fd8f648 100644
--- a/api/src/gfapi.aliases
+++ b/api/src/gfapi.aliases
@@ -172,6 +172,7 @@ _pub_glfs_upcall_lease_get_lease_type _glfs_upcall_lease_get_lease_type$GFAPI_4.
 
 _priv_glfs_statx _glfs_statx$GFAPI_6.0
 _priv_glfs_iatt_from_statx _glfs_iatt_from_statx$GFAPI_6.0
+_priv_glfs_setfspid _glfs_setfspid$GFAPI_6.1
 
 _pub_glfs_read_async _glfs_read_async$GFAPI_6.0
 _pub_glfs_write_async _glfs_write_async$GFAPI_6.0
diff --git a/api/src/gfapi.map b/api/src/gfapi.map
index bb201c780ec..b97a614c13d 100644
--- a/api/src/gfapi.map
+++ b/api/src/gfapi.map
@@ -267,3 +267,7 @@ GFAPI_6.0 {
 		glfs_fsetattr;
 } GFAPI_PRIVATE_6.0;
 
+GFAPI_PRIVATE_6.1 {
+	global:
+		glfs_setfspid;
+} GFAPI_6.0;
diff --git a/api/src/glfs-internal.h b/api/src/glfs-internal.h
index 40bbb8a9834..55401b2910e 100644
--- a/api/src/glfs-internal.h
+++ b/api/src/glfs-internal.h
@@ -702,4 +702,10 @@ void
 glfs_iatt_from_statx(struct iatt *, const struct glfs_stat *)
     GFAPI_PRIVATE(glfs_iatt_from_statx, 6.0);
 
+/*
+ * This API is a per thread setting, similar to glfs_setfs{u/g}id, because of
+ * the call to syncopctx_setfspid.
+ */
+int
+glfs_setfspid(struct glfs *, pid_t) GFAPI_PRIVATE(glfs_setfspid, 6.1);
 #endif /* !_GLFS_INTERNAL_H */
diff --git a/api/src/glfs.c b/api/src/glfs.c
index b741f6e8b46..f4a8e082f51 100644
--- a/api/src/glfs.c
+++ b/api/src/glfs.c
@@ -1461,6 +1461,21 @@ invalid_fs:
 
 GFAPI_SYMVER_PRIVATE_DEFAULT(glfs_ipc, 3.12.0);
 
+int
+priv_glfs_setfspid(struct glfs *fs, pid_t pid)
+{
+    cmd_args_t *cmd_args = NULL;
+    int ret = 0;
+
+    cmd_args = &fs->ctx->cmd_args;
+    cmd_args->client_pid = pid;
+    cmd_args->client_pid_set = 1;
+    ret = syncopctx_setfspid(&pid);
+
+    return ret;
+}
+GFAPI_SYMVER_PRIVATE_DEFAULT(glfs_setfspid, 6.1);
+
 void
 pub_glfs_free(void *ptr)
 {
-- 
cgit