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gfapi: add function to set client-pid

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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#1693155
Change-Id: I0620be2127d79d69cdd57cffb29bba44e6e5da1f
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
(cherry picked from commit 08d502c3b05c6f7831bb4cc764bd458b405a99b1)
This commit is contained in:
Ravishankar N 2019-03-14 18:41:11 +05:30 committed by Shyamsundar Ranganathan
parent cba59f6cb7
commit 4e7afab231
4 changed files with 26 additions and 0 deletions
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1
api/src/gfapi.aliases
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@ -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

4
api/src/gfapi.map
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@ -267,3 +267,7 @@ GFAPI_6.0 {
glfs_fsetattr;
} GFAPI_PRIVATE_6.0;
GFAPI_PRIVATE_6.1 {
global:
glfs_setfspid;
} GFAPI_6.0;

6
api/src/glfs-internal.h
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@ -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 */

15
api/src/glfs.c
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@ -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)
{