glusterfs

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/*
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   Copyright (c) 2016 Red Hat, Inc. <http://www.redhat.com>
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   This file is part of GlusterFS.
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   This file is licensed to you under your choice of the GNU Lesser
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   General Public License, version 3 or any later version (LGPLv3 or
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   later), or the GNU General Public License, version 2 (GPLv2), in all
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   cases as published by the Free Software Foundation.
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*/
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#include "glusterd-utils.h"
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#include "glusterd-gfproxyd-svc-helper.h"
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#include "glusterd-messages.h"
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#include <glusterfs/syscall.h>
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#include "glusterd-volgen.h"
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void
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glusterd_svc_build_gfproxyd_rundir(glusterd_volinfo_t *volinfo, char *path,
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                                   int path_len)
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{
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    char workdir[PATH_MAX] = {
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        0,
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    };
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    glusterd_conf_t *priv = THIS->private;
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    GLUSTERD_GET_VOLUME_PID_DIR(workdir, volinfo, priv);
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    snprintf(path, path_len, "%s", workdir);
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}
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void
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glusterd_svc_build_gfproxyd_socket_filepath(glusterd_volinfo_t *volinfo,
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                                            char *path, int path_len)
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{
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    char sockfilepath[PATH_MAX] = {
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        0,
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    };
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    char rundir[PATH_MAX] = {
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        0,
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    };
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    int32_t len = 0;
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    glusterd_svc_build_gfproxyd_rundir(volinfo, rundir, sizeof(rundir));
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    len = snprintf(sockfilepath, sizeof(sockfilepath), "%s/run-%s", rundir,
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                   uuid_utoa(MY_UUID));
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    if ((len < 0) || (len >= sizeof(sockfilepath))) {
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        sockfilepath[0] = 0;
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    }
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    glusterd_set_socket_filepath(sockfilepath, path, path_len);
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}
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void
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glusterd_svc_build_gfproxyd_pidfile(glusterd_volinfo_t *volinfo, char *path,
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                                    int path_len)
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{
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    char rundir[PATH_MAX] = {
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        0,
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    };
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    glusterd_svc_build_gfproxyd_rundir(volinfo, rundir, sizeof(rundir));
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    snprintf(path, path_len, "%s/%s.gfproxyd.pid", rundir, volinfo->volname);
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}
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void
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glusterd_svc_build_gfproxyd_volfile_path(glusterd_volinfo_t *volinfo,
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                                         char *path, int path_len)
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{
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    char workdir[PATH_MAX] = {
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        0,
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    };
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    glusterd_conf_t *priv = THIS->private;
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    GLUSTERD_GET_VOLUME_DIR(workdir, volinfo, priv);
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    snprintf(path, path_len, "%s/%s.gfproxyd.vol", workdir, volinfo->volname);
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}
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void
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glusterd_svc_build_gfproxyd_logdir(char *logdir, char *volname, size_t len)
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{
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    glusterd_conf_t *conf = THIS->private;
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    snprintf(logdir, len, "%s/gfproxy/%s", conf->logdir, volname);
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}
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void
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glusterd_svc_build_gfproxyd_logfile(char *logfile, char *logdir, size_t len)
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{
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    snprintf(logfile, len, "%s/gfproxyd.log", logdir);
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}
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int
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glusterd_is_gfproxyd_enabled(glusterd_volinfo_t *volinfo)
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{
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    return glusterd_volinfo_get_boolean(volinfo, VKEY_CONFIG_GFPROXY);
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}
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static int
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glusterd_svc_get_gfproxyd_volfile(glusterd_volinfo_t *volinfo, char *svc_name,
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                                  char *orgvol, char **tmpvol, int path_len)
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{
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    int tmp_fd = -1;
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    int ret = -1;
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    int need_unlink = 0;
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    glusterd_svc_build_gfproxyd_volfile_path(volinfo, orgvol, path_len);
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    ret = gf_asprintf(tmpvol, "/tmp/g%s-XXXXXX", svc_name);
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    if (ret < 0) {
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        goto out;
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    }
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    /* coverity[SECURE_TEMP] mkstemp uses 0600 as the mode and is safe */
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    tmp_fd = mkstemp(*tmpvol);
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    if (tmp_fd < 0) {
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        gf_msg("glusterd", GF_LOG_WARNING, errno, GD_MSG_FILE_OP_FAILED,
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               "Unable to create temp file"
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               " %s:(%s)",
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               *tmpvol, strerror(errno));
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        ret = -1;
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        goto out;
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    }
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    need_unlink = 1;
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    ret = glusterd_build_gfproxyd_volfile(volinfo, *tmpvol);
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out:
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    if (need_unlink && ret < 0)
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        sys_unlink(*tmpvol);
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    if ((ret < 0) && (*tmpvol != NULL)) {
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        GF_FREE(*tmpvol);
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        *tmpvol = NULL;
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    }
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    if (tmp_fd >= 0)
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        sys_close(tmp_fd);
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    return ret;
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}
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int
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glusterd_svc_check_gfproxyd_volfile_identical(char *svc_name,
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                                              glusterd_volinfo_t *volinfo,
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                                              gf_boolean_t *identical)
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{
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    char orgvol[PATH_MAX] = {
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        0,
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    };
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    char *tmpvol = NULL;
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    int ret = -1;
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    int need_unlink = 0;
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    GF_VALIDATE_OR_GOTO("glusterd", identical, out);
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    ret = glusterd_svc_get_gfproxyd_volfile(volinfo, svc_name, orgvol, &tmpvol,
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                                            PATH_MAX);
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    if (ret)
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        goto out;
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    need_unlink = 1;
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    ret = glusterd_check_files_identical(orgvol, tmpvol, identical);
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    if (ret)
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        goto out;
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out:
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    if (need_unlink)
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        sys_unlink(tmpvol);
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    if (tmpvol != NULL)
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        GF_FREE(tmpvol);
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    return ret;
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}
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int
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glusterd_svc_check_gfproxyd_topology_identical(char *svc_name,
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                                               glusterd_volinfo_t *volinfo,
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                                               gf_boolean_t *identical)
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{
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    char orgvol[PATH_MAX] = {
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        0,
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    };
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    char *tmpvol = NULL;
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    int ret = -1;
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    int tmpclean = 0;
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    GF_VALIDATE_OR_GOTO("glusterd", identical, out);
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    ret = glusterd_svc_get_gfproxyd_volfile(volinfo, svc_name, orgvol, &tmpvol,
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                                            PATH_MAX);
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    if (ret)
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        goto out;
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    tmpclean = 1; /* SET the flag to unlink() tmpfile */
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    /* Compare the topology of volfiles */
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    ret = glusterd_check_topology_identical(orgvol, tmpvol, identical);
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out:
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    if (tmpclean)
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        sys_unlink(tmpvol);
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    if (tmpvol != NULL)
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        GF_FREE(tmpvol);
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    return ret;
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}
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glusterd_volinfo_t *
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glusterd_gfproxyd_volinfo_from_svc(glusterd_svc_t *svc)
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{
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    glusterd_volinfo_t *volinfo = NULL;
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    glusterd_gfproxydsvc_t *gfproxyd = NULL;
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    /* Get volinfo->gfproxyd from svc object */
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    gfproxyd = cds_list_entry(svc, glusterd_gfproxydsvc_t, svc);
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    if (!gfproxyd) {
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        gf_msg("glusterd", GF_LOG_ERROR, 0, GD_MSG_SNAPD_OBJ_GET_FAIL,
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               "Failed to get gfproxyd "
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               "object from gfproxyd service");
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        goto out;
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    }
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    /* Get volinfo from gfproxyd */
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    volinfo = cds_list_entry(gfproxyd, glusterd_volinfo_t, gfproxyd);
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    if (!volinfo) {
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        gf_msg("glusterd", GF_LOG_ERROR, 0, GD_MSG_VOLINFO_GET_FAIL,
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               "Failed to get volinfo from "
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               "from gfproxyd");
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        goto out;
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    }
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out:
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    return volinfo;
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}
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