/*
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 <glusterfs/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 = NULL;
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));
ret = gf_asprintf(&tmpvol, "/tmp/g%s-XXXXXX", svc_name);
if (ret < 0) {
goto out;
}
/* coverity[SECURE_TEMP] mkstemp uses 0600 as the mode and is safe */
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));
ret = -1;
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 (tmpvol != NULL)
GF_FREE(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 = NULL;
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));
ret = gf_asprintf(&tmpvol, "/tmp/g%s-XXXXXX", svc_name);
if (ret < 0) {
goto out;
}
/* coverity[SECURE_TEMP] mkstemp uses 0600 as the mode and is safe */
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));
ret = -1;
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);
if (tmpvol != NULL)
GF_FREE(tmpvol);
return ret;
}