diff options
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-tierd-svc-helper.c')
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-tierd-svc-helper.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-tierd-svc-helper.c b/xlators/mgmt/glusterd/src/glusterd-tierd-svc-helper.c new file mode 100644 index 00000000000..035795b3deb --- /dev/null +++ b/xlators/mgmt/glusterd/src/glusterd-tierd-svc-helper.c @@ -0,0 +1,207 @@ +/* + 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) +{ + glusterd_conf_t *conf = THIS->private; + snprintf(logdir, len, "%s/tier/%s", priv->logdir, 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; +} |