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/*
Copyright (c) 2016 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include "glusterd.h"
#include "glusterd-utils.h"
#include "glusterd-tierd-svc-helper.h"
#include "glusterd-messages.h"
#include "syscall.h"
#include "glusterd-volgen.h"
void
glusterd_svc_build_tierd_rundir (glusterd_volinfo_t *volinfo,
char *path, int path_len)
{
char workdir[PATH_MAX] = {0,};
glusterd_conf_t *priv = THIS->private;
GLUSTERD_GET_TIER_DIR (workdir, volinfo, priv);
snprintf (path, path_len, "%s/run", workdir);
}
void
glusterd_svc_build_tierd_socket_filepath (glusterd_volinfo_t *volinfo,
char *path, int path_len)
{
char sockfilepath[PATH_MAX] = {0,};
char rundir[PATH_MAX] = {0,};
int32_t len = 0;
glusterd_svc_build_tierd_rundir (volinfo, rundir, sizeof (rundir));
len = snprintf (sockfilepath, sizeof (sockfilepath), "%s/run-%s",
rundir, uuid_utoa (MY_UUID));
if ((len < 0) || (len >= sizeof(sockfilepath))) {
sockfilepath[0] = 0;
}
glusterd_set_socket_filepath (sockfilepath, path, path_len);
}
void
glusterd_svc_build_tierd_pidfile (glusterd_volinfo_t *volinfo,
char *path, int path_len)
{
char rundir[PATH_MAX] = {0,};
glusterd_svc_build_tierd_rundir (volinfo, rundir, sizeof (rundir));
snprintf (path, path_len, "%s/%s-tierd.pid", rundir, volinfo->volname);
}
void
glusterd_svc_build_tierd_volfile_path (glusterd_volinfo_t *volinfo,
char *path, int path_len)
{
char workdir[PATH_MAX] = {0,};
glusterd_conf_t *priv = THIS->private;
GLUSTERD_GET_VOLUME_DIR (workdir, volinfo, priv);
snprintf (path, path_len, "%s/%s-tierd.vol", workdir,
volinfo->volname);
}
void
glusterd_svc_build_tierd_logdir (char *logdir, char *volname, size_t len)
{
snprintf (logdir, len, "%s/tier/%s", DEFAULT_LOG_FILE_DIRECTORY,
volname);
}
void
glusterd_svc_build_tierd_logfile (char *logfile, char *logdir, size_t len)
{
snprintf (logfile, len, "%s/tierd.log", logdir);
}
int
glusterd_svc_check_tier_volfile_identical (char *svc_name,
glusterd_volinfo_t *volinfo,
gf_boolean_t *identical)
{
char orgvol[PATH_MAX] = {0,};
char tmpvol[PATH_MAX] = {0,};
xlator_t *this = NULL;
int ret = -1;
int need_unlink = 0;
int tmp_fd = -1;
this = THIS;
GF_VALIDATE_OR_GOTO (THIS->name, this, out);
GF_VALIDATE_OR_GOTO (this->name, identical, out);
glusterd_svc_build_tierd_volfile_path (volinfo, orgvol,
sizeof (orgvol));
snprintf (tmpvol, sizeof (tmpvol), "/tmp/g%s-XXXXXX", svc_name);
tmp_fd = mkstemp (tmpvol);
if (tmp_fd < 0) {
gf_msg (this->name, GF_LOG_WARNING, errno,
GD_MSG_FILE_OP_FAILED, "Unable to create temp file"
" %s:(%s)", tmpvol, strerror (errno));
goto out;
}
need_unlink = 1;
ret = build_rebalance_volfile (volinfo, tmpvol, NULL);
if (ret)
goto out;
ret = glusterd_check_files_identical (orgvol, tmpvol,
identical);
if (ret)
goto out;
out:
if (need_unlink)
sys_unlink (tmpvol);
if (tmp_fd >= 0)
sys_close (tmp_fd);
return ret;
}
int
glusterd_svc_check_tier_topology_identical (char *svc_name,
glusterd_volinfo_t *volinfo,
gf_boolean_t *identical)
{
char orgvol[PATH_MAX] = {0,};
char tmpvol[PATH_MAX] = {0,};
glusterd_conf_t *conf = NULL;
xlator_t *this = THIS;
int ret = -1;
int tmpclean = 0;
int tmpfd = -1;
if ((!identical) || (!this) || (!this->private))
goto out;
conf = this->private;
GF_VALIDATE_OR_GOTO (this->name, conf, out);
glusterd_svc_build_tierd_volfile_path (volinfo, orgvol,
sizeof (orgvol));
snprintf (tmpvol, sizeof (tmpvol), "/tmp/g%s-XXXXXX", svc_name);
tmpfd = mkstemp (tmpvol);
if (tmpfd < 0) {
gf_msg (this->name, GF_LOG_WARNING, errno,
GD_MSG_FILE_OP_FAILED, "Unable to create temp file"
" %s:(%s)", tmpvol, strerror (errno));
goto out;
}
tmpclean = 1; /* SET the flag to unlink() tmpfile */
ret = build_rebalance_volfile (volinfo, tmpvol, NULL);
if (ret)
goto out;
/* Compare the topology of volfiles */
ret = glusterd_check_topology_identical (orgvol, tmpvol,
identical);
out:
if (tmpfd >= 0)
sys_close (tmpfd);
if (tmpclean)
sys_unlink (tmpvol);
return ret;
}
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