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|
/*
Copyright (c) 2006-2013 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/resource.h>
#include <sys/file.h>
#include <sys/wait.h>
#include <netdb.h>
#include <signal.h>
#include <libgen.h>
#include <sys/utsname.h>
#include <stdint.h>
#include <pthread.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <time.h>
#include <semaphore.h>
#include <errno.h>
#include <pwd.h>
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#ifdef HAVE_MALLOC_STATS
#ifdef DEBUG
#include <mcheck.h>
#endif
#endif
#include "xlator.h"
#include "glusterfs.h"
#include "compat.h"
#include "logging.h"
#include "dict.h"
#include "list.h"
#include "timer.h"
#include "glusterfsd.h"
#include "stack.h"
#include "revision.h"
#include "common-utils.h"
#include "event.h"
#include "globals.h"
#include "statedump.h"
#include "latency.h"
#include "glusterfsd-mem-types.h"
#include "syscall.h"
#include "call-stub.h"
#include <fnmatch.h>
#include "rpc-clnt.h"
#include "syncop.h"
#include "client_t.h"
#include "daemon.h"
/* process mode definitions */
#define GF_SERVER_PROCESS 0
#define GF_CLIENT_PROCESS 1
#define GF_GLUSTERD_PROCESS 2
/* using argp for command line parsing */
static char gf_doc[] = "";
static char argp_doc[] = "--volfile-server=SERVER [MOUNT-POINT]\n" \
"--volfile=VOLFILE [MOUNT-POINT]";
const char *argp_program_version = ""
PACKAGE_NAME" "PACKAGE_VERSION" built on "__DATE__" "__TIME__
"\nRepository revision: " GLUSTERFS_REPOSITORY_REVISION "\n"
"Copyright (c) 2006-2013 Red Hat, Inc. <http://www.redhat.com/>\n"
"GlusterFS comes with ABSOLUTELY NO WARRANTY.\n"
"It is licensed to you under your choice of the GNU Lesser\n"
"General Public License, version 3 or any later version (LGPLv3\n"
"or later), or the GNU General Public License, version 2 (GPLv2),\n"
"in all cases as published by the Free Software Foundation.";
const char *argp_program_bug_address = "<" PACKAGE_BUGREPORT ">";
static error_t parse_opts (int32_t key, char *arg, struct argp_state *_state);
static struct argp_option gf_options[] = {
{0, 0, 0, 0, "Basic options:"},
{"volfile-server", ARGP_VOLFILE_SERVER_KEY, "SERVER", 0,
"Server to get the volume file from. This option overrides "
"--volfile option"},
{"volfile", ARGP_VOLUME_FILE_KEY, "VOLFILE", 0,
"File to use as VOLUME_FILE"},
{"spec-file", ARGP_VOLUME_FILE_KEY, "VOLFILE", OPTION_HIDDEN,
"File to use as VOLUME FILE"},
{"log-level", ARGP_LOG_LEVEL_KEY, "LOGLEVEL", 0,
"Logging severity. Valid options are DEBUG, INFO, WARNING, ERROR, "
"CRITICAL, TRACE and NONE [default: INFO]"},
{"log-file", ARGP_LOG_FILE_KEY, "LOGFILE", 0,
"File to use for logging [default: "
DEFAULT_LOG_FILE_DIRECTORY "/" PACKAGE_NAME ".log" "]"},
{0, 0, 0, 0, "Advanced Options:"},
{"volfile-server-port", ARGP_VOLFILE_SERVER_PORT_KEY, "PORT", 0,
"Listening port number of volfile server"},
{"volfile-server-transport", ARGP_VOLFILE_SERVER_TRANSPORT_KEY,
"TRANSPORT", 0,
"Transport type to get volfile from server [default: socket]"},
{"volfile-id", ARGP_VOLFILE_ID_KEY, "KEY", 0,
"'key' of the volfile to be fetched from server"},
{"pid-file", ARGP_PID_FILE_KEY, "PIDFILE", 0,
"File to use as pid file"},
{"socket-file", ARGP_SOCK_FILE_KEY, "SOCKFILE", 0,
"File to use as unix-socket"},
{"no-daemon", ARGP_NO_DAEMON_KEY, 0, 0,
"Run in foreground"},
{"run-id", ARGP_RUN_ID_KEY, "RUN-ID", OPTION_HIDDEN,
"Run ID for the process, used by scripts to keep track of process "
"they started, defaults to none"},
{"debug", ARGP_DEBUG_KEY, 0, 0,
"Run in debug mode. This option sets --no-daemon, --log-level "
"to DEBUG and --log-file to console"},
{"volume-name", ARGP_VOLUME_NAME_KEY, "XLATOR-NAME", 0,
"Translator name to be used for MOUNT-POINT [default: top most volume "
"definition in VOLFILE]"},
{"xlator-option", ARGP_XLATOR_OPTION_KEY,"XLATOR-NAME.OPTION=VALUE", 0,
"Add/override an option for a translator in volume file with specified"
" value"},
{"read-only", ARGP_READ_ONLY_KEY, 0, 0,
"Mount the filesystem in 'read-only' mode"},
{"acl", ARGP_ACL_KEY, 0, 0,
"Mount the filesystem with POSIX ACL support"},
{"selinux", ARGP_SELINUX_KEY, 0, 0,
"Enable SELinux label (extened attributes) support on inodes"},
#ifdef GF_LINUX_HOST_OS
{"aux-gfid-mount", ARGP_AUX_GFID_MOUNT_KEY, 0, 0,
"Enable access to filesystem through gfid directly"},
#endif
{"enable-ino32", ARGP_INODE32_KEY, "BOOL", OPTION_ARG_OPTIONAL,
"Use 32-bit inodes when mounting to workaround broken applications"
"that don't support 64-bit inodes"},
{"worm", ARGP_WORM_KEY, 0, 0,
"Mount the filesystem in 'worm' mode"},
{"mac-compat", ARGP_MAC_COMPAT_KEY, "BOOL", OPTION_ARG_OPTIONAL,
"Provide stubs for attributes needed for seamless operation on Macs "
#ifdef GF_DARWIN_HOST_OS
"[default: \"on\" on client side, else \"off\"]"
#else
"[default: \"off\"]"
#endif
},
{"brick-name", ARGP_BRICK_NAME_KEY, "BRICK-NAME", OPTION_HIDDEN,
"Brick name to be registered with Gluster portmapper" },
{"brick-port", ARGP_BRICK_PORT_KEY, "BRICK-PORT", OPTION_HIDDEN,
"Brick Port to be registered with Gluster portmapper" },
{"fopen-keep-cache", ARGP_FOPEN_KEEP_CACHE_KEY, "BOOL", OPTION_ARG_OPTIONAL,
"Do not purge the cache on file open"},
{0, 0, 0, 0, "Fuse options:"},
{"direct-io-mode", ARGP_DIRECT_IO_MODE_KEY, "BOOL", OPTION_ARG_OPTIONAL,
"Use direct I/O mode in fuse kernel module"
" [default: \"off\" if big writes are supported, else "
"\"on\" for fds not opened with O_RDONLY]"},
{"entry-timeout", ARGP_ENTRY_TIMEOUT_KEY, "SECONDS", 0,
"Set entry timeout to SECONDS in fuse kernel module [default: 1]"},
{"negative-timeout", ARGP_NEGATIVE_TIMEOUT_KEY, "SECONDS", 0,
"Set negative timeout to SECONDS in fuse kernel module [default: 0]"},
{"attribute-timeout", ARGP_ATTRIBUTE_TIMEOUT_KEY, "SECONDS", 0,
"Set attribute timeout to SECONDS for inodes in fuse kernel module "
"[default: 1]"},
{"gid-timeout", ARGP_GID_TIMEOUT_KEY, "SECONDS", 0,
"Set auxilary group list timeout to SECONDS for fuse translator "
"[default: 0]"},
{"background-qlen", ARGP_FUSE_BACKGROUND_QLEN_KEY, "N", 0,
"Set fuse module's background queue length to N "
"[default: 64]"},
{"congestion-threshold", ARGP_FUSE_CONGESTION_THRESHOLD_KEY, "N", 0,
"Set fuse module's congestion threshold to N "
"[default: 48]"},
{"client-pid", ARGP_CLIENT_PID_KEY, "PID", OPTION_HIDDEN,
"client will authenticate itself with process id PID to server"},
{"user-map-root", ARGP_USER_MAP_ROOT_KEY, "USER", OPTION_HIDDEN,
"replace USER with root in messages"},
{"dump-fuse", ARGP_DUMP_FUSE_KEY, "PATH", 0,
"Dump fuse traffic to PATH"},
{"volfile-check", ARGP_VOLFILE_CHECK_KEY, 0, 0,
"Enable strict volume file checking"},
{"mem-accounting", ARGP_MEM_ACCOUNTING_KEY, 0, OPTION_HIDDEN,
"Enable internal memory accounting"},
{"fuse-mountopts", ARGP_FUSE_MOUNTOPTS_KEY, "OPTIONS", OPTION_HIDDEN,
"Extra mount options to pass to FUSE"},
{"use-readdirp", ARGP_FUSE_USE_READDIRP_KEY, "BOOL", OPTION_ARG_OPTIONAL,
"Use readdirp mode in fuse kernel module"
" [default: \"off\"]"},
{0, 0, 0, 0, "Miscellaneous Options:"},
{0, }
};
static struct argp argp = { gf_options, parse_opts, argp_doc, gf_doc };
int glusterfs_pidfile_cleanup (glusterfs_ctx_t *ctx);
int glusterfs_volumes_init (glusterfs_ctx_t *ctx);
int glusterfs_mgmt_init (glusterfs_ctx_t *ctx);
int glusterfs_listener_init (glusterfs_ctx_t *ctx);
int glusterfs_listener_stop (glusterfs_ctx_t *ctx);
static int
set_fuse_mount_options (glusterfs_ctx_t *ctx, dict_t *options)
{
int ret = 0;
cmd_args_t *cmd_args = NULL;
char *mount_point = NULL;
char cwd[PATH_MAX] = {0,};
cmd_args = &ctx->cmd_args;
/* Check if mount-point is absolute path,
* if not convert to absolute path by concating with CWD
*/
if (cmd_args->mount_point[0] != '/') {
if (getcwd (cwd, PATH_MAX) != NULL) {
ret = gf_asprintf (&mount_point, "%s/%s", cwd,
cmd_args->mount_point);
if (ret == -1) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"Could not create absolute mountpoint "
"path");
goto err;
}
} else {
gf_log ("glusterfsd", GF_LOG_ERROR,
"Could not get current working directory");
goto err;
}
} else
mount_point = gf_strdup (cmd_args->mount_point);
ret = dict_set_dynstr (options, ZR_MOUNTPOINT_OPT, mount_point);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set mount-point to options dictionary");
goto err;
}
if (cmd_args->fuse_attribute_timeout >= 0) {
ret = dict_set_double (options, ZR_ATTR_TIMEOUT_OPT,
cmd_args->fuse_attribute_timeout);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key %s",
ZR_ATTR_TIMEOUT_OPT);
goto err;
}
}
if (cmd_args->fuse_entry_timeout >= 0) {
ret = dict_set_double (options, ZR_ENTRY_TIMEOUT_OPT,
cmd_args->fuse_entry_timeout);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key %s",
ZR_ENTRY_TIMEOUT_OPT);
goto err;
}
}
if (cmd_args->fuse_negative_timeout >= 0) {
ret = dict_set_double (options, ZR_NEGATIVE_TIMEOUT_OPT,
cmd_args->fuse_negative_timeout);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key %s",
ZR_NEGATIVE_TIMEOUT_OPT);
goto err;
}
}
if (cmd_args->client_pid_set) {
ret = dict_set_int32 (options, "client-pid",
cmd_args->client_pid);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key %s",
"client-pid");
goto err;
}
}
if (cmd_args->uid_map_root) {
ret = dict_set_int32 (options, "uid-map-root",
cmd_args->uid_map_root);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key %s",
"uid-map-root");
goto err;
}
}
if (cmd_args->volfile_check) {
ret = dict_set_int32 (options, ZR_STRICT_VOLFILE_CHECK,
cmd_args->volfile_check);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key %s",
ZR_STRICT_VOLFILE_CHECK);
goto err;
}
}
if (cmd_args->dump_fuse) {
ret = dict_set_static_ptr (options, ZR_DUMP_FUSE,
cmd_args->dump_fuse);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key %s",
ZR_DUMP_FUSE);
goto err;
}
}
if (cmd_args->acl) {
ret = dict_set_static_ptr (options, "acl", "on");
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key acl");
goto err;
}
}
if (cmd_args->selinux) {
ret = dict_set_static_ptr (options, "selinux", "on");
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key selinux");
goto err;
}
}
if (cmd_args->aux_gfid_mount) {
ret = dict_set_static_ptr (options, "virtual-gfid-access",
"on");
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key "
"aux-gfid-mount");
goto err;
}
}
if (cmd_args->enable_ino32) {
ret = dict_set_static_ptr (options, "enable-ino32", "on");
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key enable-ino32");
goto err;
}
}
if (cmd_args->read_only) {
ret = dict_set_static_ptr (options, "read-only", "on");
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key read-only");
goto err;
}
}
switch (cmd_args->fopen_keep_cache) {
case GF_OPTION_ENABLE:
ret = dict_set_static_ptr(options, "fopen-keep-cache",
"on");
if (ret < 0) {
gf_log("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key "
"fopen-keep-cache");
goto err;
}
break;
case GF_OPTION_DISABLE:
ret = dict_set_static_ptr(options, "fopen-keep-cache",
"off");
if (ret < 0) {
gf_log("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key "
"fopen-keep-cache");
goto err;
}
break;
case GF_OPTION_DEFERRED: /* default */
default:
gf_log ("glusterfsd", GF_LOG_DEBUG,
"fopen-keep-cache mode %d",
cmd_args->fopen_keep_cache);
break;
}
if (cmd_args->gid_timeout_set) {
ret = dict_set_int32(options, "gid-timeout",
cmd_args->gid_timeout);
if (ret < 0) {
gf_log("glusterfsd", GF_LOG_ERROR, "failed to set dict "
"value for key gid-timeout");
goto err;
}
}
if (cmd_args->background_qlen) {
ret = dict_set_int32 (options, "background-qlen",
cmd_args->background_qlen);
if (ret < 0) {
gf_log("glusterfsd", GF_LOG_ERROR, "failed to set dict "
"value for key background-qlen");
goto err;
}
}
if (cmd_args->congestion_threshold) {
ret = dict_set_int32 (options, "congestion-threshold",
cmd_args->congestion_threshold);
if (ret < 0) {
gf_log("glusterfsd", GF_LOG_ERROR, "failed to set dict "
"value for key congestion-threshold");
goto err;
}
}
switch (cmd_args->fuse_direct_io_mode) {
case GF_OPTION_DISABLE: /* disable */
ret = dict_set_static_ptr (options, ZR_DIRECT_IO_OPT,
"disable");
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set 'disable' for key %s",
ZR_DIRECT_IO_OPT);
goto err;
}
break;
case GF_OPTION_ENABLE: /* enable */
ret = dict_set_static_ptr (options, ZR_DIRECT_IO_OPT,
"enable");
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set 'enable' for key %s",
ZR_DIRECT_IO_OPT);
goto err;
}
break;
case GF_OPTION_DEFERRED: /* default */
default:
gf_log ("", GF_LOG_DEBUG, "fuse direct io type %d",
cmd_args->fuse_direct_io_mode);
break;
}
if (!cmd_args->no_daemon_mode) {
ret = dict_set_static_ptr (options, "sync-to-mount",
"enable");
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key sync-mtab");
goto err;
}
}
if (cmd_args->use_readdirp) {
ret = dict_set_str (options, "use-readdirp",
cmd_args->use_readdirp);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR, "failed to set dict"
" value for key use-readdirp");
goto err;
}
}
ret = 0;
err:
return ret;
}
int
create_fuse_mount (glusterfs_ctx_t *ctx)
{
int ret = 0;
cmd_args_t *cmd_args = NULL;
xlator_t *master = NULL;
cmd_args = &ctx->cmd_args;
if (!cmd_args->mount_point) {
gf_log ("", GF_LOG_TRACE,
"mount point not found, not a client process");
return 0;
}
if (ctx->process_mode != GF_CLIENT_PROCESS) {
gf_log("glusterfsd", GF_LOG_ERROR,
"Not a client process, not performing mount operation");
return -1;
}
master = GF_CALLOC (1, sizeof (*master),
gfd_mt_xlator_t);
if (!master)
goto err;
master->name = gf_strdup ("fuse");
if (!master->name)
goto err;
if (xlator_set_type (master, "mount/fuse") == -1) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"MOUNT-POINT %s initialization failed",
cmd_args->mount_point);
goto err;
}
master->ctx = ctx;
master->options = get_new_dict ();
if (!master->options)
goto err;
ret = set_fuse_mount_options (ctx, master->options);
if (ret)
goto err;
if (cmd_args->fuse_mountopts) {
ret = dict_set_static_ptr (master->options, ZR_FUSE_MOUNTOPTS,
cmd_args->fuse_mountopts);
if (ret < 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"failed to set dict value for key %s",
ZR_FUSE_MOUNTOPTS);
goto err;
}
}
ret = xlator_init (master);
if (ret) {
gf_log ("", GF_LOG_DEBUG, "failed to initialize fuse translator");
goto err;
}
ctx->master = master;
return 0;
err:
if (master) {
xlator_destroy (master);
}
return 1;
}
static FILE *
get_volfp (glusterfs_ctx_t *ctx)
{
int ret = 0;
cmd_args_t *cmd_args = NULL;
FILE *specfp = NULL;
struct stat statbuf;
cmd_args = &ctx->cmd_args;
ret = sys_lstat (cmd_args->volfile, &statbuf);
if (ret == -1) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"%s: %s", cmd_args->volfile, strerror (errno));
return NULL;
}
if ((specfp = fopen (cmd_args->volfile, "r")) == NULL) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"volume file %s: %s",
cmd_args->volfile,
strerror (errno));
return NULL;
}
gf_log ("glusterfsd", GF_LOG_DEBUG,
"loading volume file %s", cmd_args->volfile);
return specfp;
}
static int
gf_remember_backup_volfile_server (char *arg)
{
glusterfs_ctx_t *ctx = NULL;
cmd_args_t *cmd_args = NULL;
int ret = -1;
server_cmdline_t *server = NULL;
ctx = glusterfsd_ctx;
if (!ctx)
goto out;
cmd_args = &ctx->cmd_args;
if(!cmd_args)
goto out;
server = GF_CALLOC (1, sizeof (server_cmdline_t),
gfd_mt_server_cmdline_t);
if (!server)
goto out;
INIT_LIST_HEAD(&server->list);
server->volfile_server = gf_strdup(arg);
if (!cmd_args->volfile_server) {
cmd_args->volfile_server = server->volfile_server;
cmd_args->curr_server = server;
}
if (!server->volfile_server) {
gf_log ("", GF_LOG_WARNING,
"xlator option %s is invalid", arg);
goto out;
}
list_add_tail (&server->list, &cmd_args->volfile_servers);
ret = 0;
out:
if (ret == -1) {
if (server) {
GF_FREE (server->volfile_server);
GF_FREE (server);
}
}
return ret;
}
static int
gf_remember_xlator_option (char *arg)
{
glusterfs_ctx_t *ctx = NULL;
cmd_args_t *cmd_args = NULL;
xlator_cmdline_option_t *option = NULL;
int ret = -1;
char *dot = NULL;
char *equals = NULL;
ctx = glusterfsd_ctx;
cmd_args = &ctx->cmd_args;
option = GF_CALLOC (1, sizeof (xlator_cmdline_option_t),
gfd_mt_xlator_cmdline_option_t);
if (!option)
goto out;
INIT_LIST_HEAD (&option->cmd_args);
dot = strchr (arg, '.');
if (!dot) {
gf_log ("", GF_LOG_WARNING,
"xlator option %s is invalid", arg);
goto out;
}
option->volume = GF_CALLOC ((dot - arg) + 1, sizeof (char),
gfd_mt_char);
if (!option->volume)
goto out;
strncpy (option->volume, arg, (dot - arg));
equals = strchr (arg, '=');
if (!equals) {
gf_log ("", GF_LOG_WARNING,
"xlator option %s is invalid", arg);
goto out;
}
option->key = GF_CALLOC ((equals - dot) + 1, sizeof (char),
gfd_mt_char);
if (!option->key)
goto out;
strncpy (option->key, dot + 1, (equals - dot - 1));
if (!*(equals + 1)) {
gf_log ("", GF_LOG_WARNING,
"xlator option %s is invalid", arg);
goto out;
}
option->value = gf_strdup (equals + 1);
list_add (&option->cmd_args, &cmd_args->xlator_options);
ret = 0;
out:
if (ret == -1) {
if (option) {
GF_FREE (option->volume);
GF_FREE (option->key);
GF_FREE (option->value);
GF_FREE (option);
}
}
return ret;
}
static error_t
parse_opts (int key, char *arg, struct argp_state *state)
{
cmd_args_t *cmd_args = NULL;
uint32_t n = 0;
double d = 0.0;
gf_boolean_t b = _gf_false;
char *pwd = NULL;
char tmp_buf[2048] = {0,};
char *tmp_str = NULL;
char *port_str = NULL;
struct passwd *pw = NULL;
cmd_args = state->input;
switch (key) {
case ARGP_VOLFILE_SERVER_KEY:
gf_remember_backup_volfile_server (arg);
break;
case ARGP_READ_ONLY_KEY:
cmd_args->read_only = 1;
break;
case ARGP_ACL_KEY:
cmd_args->acl = 1;
gf_remember_xlator_option ("*-md-cache.cache-posix-acl=true");
break;
case ARGP_SELINUX_KEY:
cmd_args->selinux = 1;
gf_remember_xlator_option ("*-md-cache.cache-selinux=true");
break;
case ARGP_AUX_GFID_MOUNT_KEY:
cmd_args->aux_gfid_mount = 1;
break;
case ARGP_INODE32_KEY:
cmd_args->enable_ino32 = 1;
break;
case ARGP_WORM_KEY:
cmd_args->worm = 1;
break;
case ARGP_MAC_COMPAT_KEY:
if (!arg)
arg = "on";
if (gf_string2boolean (arg, &b) == 0) {
cmd_args->mac_compat = b;
break;
}
argp_failure (state, -1, 0,
"invalid value \"%s\" for mac-compat", arg);
break;
case ARGP_VOLUME_FILE_KEY:
GF_FREE (cmd_args->volfile);
if (arg[0] != '/') {
pwd = getcwd (NULL, PATH_MAX);
if (!pwd) {
argp_failure (state, -1, errno,
"getcwd failed with error no %d",
errno);
break;
}
snprintf (tmp_buf, 1024, "%s/%s", pwd, arg);
cmd_args->volfile = gf_strdup (tmp_buf);
free (pwd);
} else {
cmd_args->volfile = gf_strdup (arg);
}
break;
case ARGP_LOG_LEVEL_KEY:
if (strcasecmp (arg, ARGP_LOG_LEVEL_NONE_OPTION) == 0) {
cmd_args->log_level = GF_LOG_NONE;
break;
}
if (strcasecmp (arg, ARGP_LOG_LEVEL_CRITICAL_OPTION) == 0) {
cmd_args->log_level = GF_LOG_CRITICAL;
break;
}
if (strcasecmp (arg, ARGP_LOG_LEVEL_ERROR_OPTION) == 0) {
cmd_args->log_level = GF_LOG_ERROR;
break;
}
if (strcasecmp (arg, ARGP_LOG_LEVEL_WARNING_OPTION) == 0) {
cmd_args->log_level = GF_LOG_WARNING;
break;
}
if (strcasecmp (arg, ARGP_LOG_LEVEL_INFO_OPTION) == 0) {
cmd_args->log_level = GF_LOG_INFO;
break;
}
if (strcasecmp (arg, ARGP_LOG_LEVEL_DEBUG_OPTION) == 0) {
cmd_args->log_level = GF_LOG_DEBUG;
break;
}
if (strcasecmp (arg, ARGP_LOG_LEVEL_TRACE_OPTION) == 0) {
cmd_args->log_level = GF_LOG_TRACE;
break;
}
argp_failure (state, -1, 0, "unknown log level %s", arg);
break;
case ARGP_LOG_FILE_KEY:
cmd_args->log_file = gf_strdup (arg);
break;
case ARGP_VOLFILE_SERVER_PORT_KEY:
n = 0;
if (gf_string2uint_base10 (arg, &n) == 0) {
cmd_args->volfile_server_port = n;
break;
}
argp_failure (state, -1, 0,
"unknown volfile server port %s", arg);
break;
case ARGP_VOLFILE_SERVER_TRANSPORT_KEY:
cmd_args->volfile_server_transport = gf_strdup (arg);
break;
case ARGP_VOLFILE_ID_KEY:
cmd_args->volfile_id = gf_strdup (arg);
break;
case ARGP_PID_FILE_KEY:
cmd_args->pid_file = gf_strdup (arg);
break;
case ARGP_SOCK_FILE_KEY:
cmd_args->sock_file = gf_strdup (arg);
break;
case ARGP_NO_DAEMON_KEY:
cmd_args->no_daemon_mode = ENABLE_NO_DAEMON_MODE;
break;
case ARGP_RUN_ID_KEY:
cmd_args->run_id = gf_strdup (arg);
break;
case ARGP_DEBUG_KEY:
cmd_args->debug_mode = ENABLE_DEBUG_MODE;
break;
case ARGP_DIRECT_IO_MODE_KEY:
if (!arg)
arg = "on";
if (gf_string2boolean (arg, &b) == 0) {
cmd_args->fuse_direct_io_mode = b;
break;
}
argp_failure (state, -1, 0,
"unknown direct I/O mode setting \"%s\"", arg);
break;
case ARGP_ENTRY_TIMEOUT_KEY:
d = 0.0;
gf_string2double (arg, &d);
if (!(d < 0.0)) {
cmd_args->fuse_entry_timeout = d;
break;
}
argp_failure (state, -1, 0, "unknown entry timeout %s", arg);
break;
case ARGP_NEGATIVE_TIMEOUT_KEY:
d = 0.0;
gf_string2double (arg, &d);
if (!(d < 0.0)) {
cmd_args->fuse_negative_timeout = d;
break;
}
argp_failure (state, -1, 0, "unknown negative timeout %s", arg);
break;
case ARGP_ATTRIBUTE_TIMEOUT_KEY:
d = 0.0;
gf_string2double (arg, &d);
if (!(d < 0.0)) {
cmd_args->fuse_attribute_timeout = d;
break;
}
argp_failure (state, -1, 0,
"unknown attribute timeout %s", arg);
break;
case ARGP_CLIENT_PID_KEY:
if (gf_string2int (arg, &cmd_args->client_pid) == 0) {
cmd_args->client_pid_set = 1;
break;
}
argp_failure (state, -1, 0,
"unknown client pid %s", arg);
break;
case ARGP_USER_MAP_ROOT_KEY:
pw = getpwnam (arg);
if (pw)
cmd_args->uid_map_root = pw->pw_uid;
else
argp_failure (state, -1, 0,
"user %s does not exist", arg);
break;
case ARGP_VOLFILE_CHECK_KEY:
cmd_args->volfile_check = 1;
break;
case ARGP_VOLUME_NAME_KEY:
cmd_args->volume_name = gf_strdup (arg);
break;
case ARGP_XLATOR_OPTION_KEY:
if (gf_remember_xlator_option (arg))
argp_failure (state, -1, 0, "invalid xlator option %s",
arg);
break;
case ARGP_KEY_NO_ARGS:
break;
case ARGP_KEY_ARG:
if (state->arg_num >= 1)
argp_usage (state);
cmd_args->mount_point = gf_strdup (arg);
break;
case ARGP_DUMP_FUSE_KEY:
cmd_args->dump_fuse = gf_strdup (arg);
break;
case ARGP_BRICK_NAME_KEY:
cmd_args->brick_name = gf_strdup (arg);
break;
case ARGP_BRICK_PORT_KEY:
n = 0;
port_str = strtok_r (arg, ",", &tmp_str);
if (gf_string2uint_base10 (port_str, &n) == 0) {
cmd_args->brick_port = n;
port_str = strtok_r (NULL, ",", &tmp_str);
if (port_str) {
if (gf_string2uint_base10 (port_str, &n) == 0)
cmd_args->brick_port2 = n;
break;
argp_failure (state, -1, 0,
"wrong brick (listen) port %s", arg);
}
break;
}
argp_failure (state, -1, 0,
"unknown brick (listen) port %s", arg);
break;
case ARGP_MEM_ACCOUNTING_KEY:
/* TODO: it should have got handled much earlier */
//gf_mem_acct_enable_set (THIS->ctx);
break;
case ARGP_FOPEN_KEEP_CACHE_KEY:
if (!arg)
arg = "on";
if (gf_string2boolean (arg, &b) == 0) {
cmd_args->fopen_keep_cache = b;
break;
}
argp_failure (state, -1, 0,
"unknown cache setting \"%s\"", arg);
break;
case ARGP_GID_TIMEOUT_KEY:
if (!gf_string2int(arg, &cmd_args->gid_timeout)) {
cmd_args->gid_timeout_set = _gf_true;
break;
}
argp_failure(state, -1, 0, "unknown group list timeout %s", arg);
break;
case ARGP_FUSE_BACKGROUND_QLEN_KEY:
if (!gf_string2int (arg, &cmd_args->background_qlen))
break;
argp_failure (state, -1, 0,
"unknown background qlen option %s", arg);
break;
case ARGP_FUSE_CONGESTION_THRESHOLD_KEY:
if (!gf_string2int (arg, &cmd_args->congestion_threshold))
break;
argp_failure (state, -1, 0,
"unknown congestion threshold option %s", arg);
break;
case ARGP_FUSE_MOUNTOPTS_KEY:
cmd_args->fuse_mountopts = gf_strdup (arg);
break;
case ARGP_FUSE_USE_READDIRP_KEY:
if (!arg)
arg = "yes";
if (gf_string2boolean (arg, &b) == 0) {
if (b) {
cmd_args->use_readdirp = "yes";
} else {
cmd_args->use_readdirp = "no";
}
break;
}
argp_failure (state, -1, 0,
"unknown use-readdirp setting \"%s\"", arg);
break;
}
return 0;
}
void
cleanup_and_exit (int signum)
{
glusterfs_ctx_t *ctx = NULL;
xlator_t *trav = NULL;
ctx = glusterfsd_ctx;
if (!ctx)
return;
gf_log_callingfn ("", GF_LOG_WARNING,
"received signum (%d), shutting down", signum);
if (ctx->cleanup_started)
return;
ctx->cleanup_started = 1;
glusterfs_mgmt_pmap_signout (ctx);
/* below part is a racy code where the rpcsvc object is freed.
* But in another thread (epoll thread), upon poll error in the
* socket the transports are cleaned up where again rpcsvc object
* is accessed (which is already freed by the below function).
* Since the process is about to be killed dont execute the function
* below.
*/
/* if (ctx->listener) { */
/* (void) glusterfs_listener_stop (ctx); */
/* } */
/* Call fini() of FUSE xlator first:
* so there are no more requests coming and
* 'umount' of mount point is done properly */
trav = ctx->master;
if (trav && trav->fini) {
THIS = trav;
trav->fini (trav);
}
glusterfs_pidfile_cleanup (ctx);
exit (0);
#if 0
/* TODO: Properly do cleanup_and_exit(), with synchronization */
if (ctx->mgmt) {
/* cleanup the saved-frames before last unref */
rpc_clnt_connection_cleanup (&ctx->mgmt->conn);
rpc_clnt_unref (ctx->mgmt);
}
/* call fini() of each xlator */
trav = NULL;
if (ctx->active)
trav = ctx->active->top;
while (trav) {
if (trav->fini) {
THIS = trav;
trav->fini (trav);
}
trav = trav->next;
}
#endif
}
static void
reincarnate (int signum)
{
int ret = 0;
glusterfs_ctx_t *ctx = NULL;
cmd_args_t *cmd_args = NULL;
ctx = glusterfsd_ctx;
cmd_args = &ctx->cmd_args;
if (cmd_args->volfile_server) {
gf_log ("glusterfsd", GF_LOG_INFO,
"Fetching the volume file from server...");
ret = glusterfs_volfile_fetch (ctx);
} else {
gf_log ("glusterfsd", GF_LOG_DEBUG,
"Not reloading volume specification file on SIGHUP");
}
/* Also, SIGHUP should do logrotate */
gf_log_logrotate (1);
if (ret < 0)
gf_log ("glusterfsd", GF_LOG_ERROR,
"volume initialization failed.");
return;
}
void
emancipate (glusterfs_ctx_t *ctx, int ret)
{
/* break free from the parent */
if (ctx->daemon_pipe[1] != -1) {
write (ctx->daemon_pipe[1], (void *) &ret, sizeof (ret));
close (ctx->daemon_pipe[1]);
ctx->daemon_pipe[1] = -1;
}
}
static uint8_t
gf_get_process_mode (char *exec_name)
{
char *dup_execname = NULL, *base = NULL;
uint8_t ret = 0;
dup_execname = gf_strdup (exec_name);
base = basename (dup_execname);
if (!strncmp (base, "glusterfsd", 10)) {
ret = GF_SERVER_PROCESS;
} else if (!strncmp (base, "glusterd", 8)) {
ret = GF_GLUSTERD_PROCESS;
} else {
ret = GF_CLIENT_PROCESS;
}
GF_FREE (dup_execname);
return ret;
}
static int
glusterfs_ctx_defaults_init (glusterfs_ctx_t *ctx)
{
cmd_args_t *cmd_args = NULL;
struct rlimit lim = {0, };
int ret = -1;
xlator_mem_acct_init (THIS, gfd_mt_end);
ctx->process_uuid = generate_glusterfs_ctx_id ();
if (!ctx->process_uuid) {
gf_log ("", GF_LOG_CRITICAL,
"ERROR: glusterfs uuid generation failed");
goto out;
}
ctx->page_size = 128 * GF_UNIT_KB;
ctx->iobuf_pool = iobuf_pool_new ();
if (!ctx->iobuf_pool) {
gf_log ("", GF_LOG_CRITICAL,
"ERROR: glusterfs iobuf pool creation failed");
goto out;
}
ctx->event_pool = event_pool_new (DEFAULT_EVENT_POOL_SIZE);
if (!ctx->event_pool) {
gf_log ("", GF_LOG_CRITICAL,
"ERROR: glusterfs event pool creation failed");
goto out;
}
ctx->pool = GF_CALLOC (1, sizeof (call_pool_t), gfd_mt_call_pool_t);
if (!ctx->pool) {
gf_log ("", GF_LOG_CRITICAL,
"ERROR: glusterfs call pool creation failed");
goto out;
}
INIT_LIST_HEAD (&ctx->pool->all_frames);
LOCK_INIT (&ctx->pool->lock);
/* frame_mem_pool size 112 * 4k */
ctx->pool->frame_mem_pool = mem_pool_new (call_frame_t, 4096);
if (!ctx->pool->frame_mem_pool) {
gf_log ("", GF_LOG_CRITICAL,
"ERROR: glusterfs frame pool creation failed");
goto out;
}
/* stack_mem_pool size 256 * 1024 */
ctx->pool->stack_mem_pool = mem_pool_new (call_stack_t, 1024);
if (!ctx->pool->stack_mem_pool) {
gf_log ("", GF_LOG_CRITICAL,
"ERROR: glusterfs stack pool creation failed");
goto out;
}
ctx->stub_mem_pool = mem_pool_new (call_stub_t, 1024);
if (!ctx->stub_mem_pool) {
gf_log ("", GF_LOG_CRITICAL,
"ERROR: glusterfs stub pool creation failed");
goto out;
}
ctx->dict_pool = mem_pool_new (dict_t, GF_MEMPOOL_COUNT_OF_DICT_T);
if (!ctx->dict_pool)
goto out;
ctx->dict_pair_pool = mem_pool_new (data_pair_t,
GF_MEMPOOL_COUNT_OF_DATA_PAIR_T);
if (!ctx->dict_pair_pool)
goto out;
ctx->dict_data_pool = mem_pool_new (data_t, GF_MEMPOOL_COUNT_OF_DATA_T);
if (!ctx->dict_data_pool)
goto out;
pthread_mutex_init (&(ctx->lock), NULL);
ctx->clienttable = gf_clienttable_alloc();
if (!ctx->clienttable)
goto out;
cmd_args = &ctx->cmd_args;
/* parsing command line arguments */
cmd_args->log_level = DEFAULT_LOG_LEVEL;
cmd_args->mac_compat = GF_OPTION_DISABLE;
#ifdef GF_DARWIN_HOST_OS
/* On Darwin machines, O_APPEND is not handled,
* which may corrupt the data
*/
cmd_args->fuse_direct_io_mode = GF_OPTION_DISABLE;
#else
cmd_args->fuse_direct_io_mode = GF_OPTION_DEFERRED;
#endif
cmd_args->fuse_attribute_timeout = -1;
cmd_args->fuse_entry_timeout = -1;
cmd_args->fopen_keep_cache = GF_OPTION_DEFERRED;
INIT_LIST_HEAD (&cmd_args->xlator_options);
INIT_LIST_HEAD (&cmd_args->volfile_servers);
lim.rlim_cur = RLIM_INFINITY;
lim.rlim_max = RLIM_INFINITY;
setrlimit (RLIMIT_CORE, &lim);
ret = 0;
out:
if (ret && ctx) {
if (ctx->pool) {
mem_pool_destroy (ctx->pool->frame_mem_pool);
mem_pool_destroy (ctx->pool->stack_mem_pool);
}
GF_FREE (ctx->pool);
mem_pool_destroy (ctx->stub_mem_pool);
mem_pool_destroy (ctx->dict_pool);
mem_pool_destroy (ctx->dict_data_pool);
mem_pool_destroy (ctx->dict_pair_pool);
}
return ret;
}
static int
logging_init (glusterfs_ctx_t *ctx, const char *progpath)
{
cmd_args_t *cmd_args = NULL;
int ret = 0;
char ident[1024] = {0,};
char *progname = NULL;
char *ptr = NULL;
cmd_args = &ctx->cmd_args;
if (cmd_args->log_file == NULL) {
ret = gf_set_log_file_path (cmd_args);
if (ret == -1) {
fprintf (stderr, "ERROR: failed to set the log file path\n");
return -1;
}
}
#ifdef GF_USE_SYSLOG
progname = gf_strdup (progpath);
snprintf (ident, 1024, "%s_%s", basename(progname),
basename(cmd_args->log_file));
GF_FREE (progname);
/* remove .log suffix */
if (NULL != (ptr = strrchr(ident, '.'))) {
if (strcmp(ptr, ".log") == 0) {
/* note: ptr points to location in ident only */
ptr[0] = '\0';
}
}
ptr = ident;
#endif
if (gf_log_init (ctx, cmd_args->log_file, ptr) == -1) {
fprintf (stderr, "ERROR: failed to open logfile %s\n",
cmd_args->log_file);
return -1;
}
gf_log_set_loglevel (cmd_args->log_level);
return 0;
}
void
gf_check_and_set_mem_acct (glusterfs_ctx_t *ctx, int argc, char *argv[])
{
int i = 0;
for (i = 0; i < argc; i++) {
if (strcmp (argv[i], "--mem-accounting") == 0) {
gf_mem_acct_enable_set (ctx);
break;
}
}
}
int
parse_cmdline (int argc, char *argv[], glusterfs_ctx_t *ctx)
{
int process_mode = 0;
int ret = 0;
struct stat stbuf = {0, };
char timestr[32];
char tmp_logfile[1024] = { 0 };
char *tmp_logfile_dyn = NULL;
char *tmp_logfilebase = NULL;
cmd_args_t *cmd_args = NULL;
cmd_args = &ctx->cmd_args;
argp_parse (&argp, argc, argv, ARGP_IN_ORDER, NULL, cmd_args);
if (ENABLE_DEBUG_MODE == cmd_args->debug_mode) {
cmd_args->log_level = GF_LOG_DEBUG;
cmd_args->log_file = "/dev/stderr";
cmd_args->no_daemon_mode = ENABLE_NO_DAEMON_MODE;
}
process_mode = gf_get_process_mode (argv[0]);
ctx->process_mode = process_mode;
/* Make sure after the parsing cli, if '--volfile-server' option is
given, then '--volfile-id' is mandatory */
if (cmd_args->volfile_server && !cmd_args->volfile_id) {
gf_log ("glusterfs", GF_LOG_CRITICAL,
"ERROR: '--volfile-id' is mandatory if '-s' OR "
"'--volfile-server' option is given");
ret = -1;
goto out;
}
if ((cmd_args->volfile_server == NULL)
&& (cmd_args->volfile == NULL)) {
if (process_mode == GF_SERVER_PROCESS)
cmd_args->volfile = gf_strdup (DEFAULT_SERVER_VOLFILE);
else if (process_mode == GF_GLUSTERD_PROCESS)
cmd_args->volfile = gf_strdup (DEFAULT_GLUSTERD_VOLFILE);
else
cmd_args->volfile = gf_strdup (DEFAULT_CLIENT_VOLFILE);
/* Check if the volfile exists, if not give usage output
and exit */
ret = stat (cmd_args->volfile, &stbuf);
if (ret) {
gf_log ("glusterfs", GF_LOG_CRITICAL,
"ERROR: parsing the volfile failed (%s)\n",
strerror (errno));
/* argp_usage (argp.) */
fprintf (stderr, "USAGE: %s [options] [mountpoint]\n",
argv[0]);
goto out;
}
}
if (cmd_args->run_id) {
ret = sys_lstat (cmd_args->log_file, &stbuf);
/* If its /dev/null, or /dev/stdout, /dev/stderr,
* let it use the same, no need to alter
*/
if (((ret == 0) &&
(S_ISREG (stbuf.st_mode) || S_ISLNK (stbuf.st_mode))) ||
(ret == -1)) {
/* Have separate logfile per run */
gf_time_fmt (timestr, sizeof timestr, time (NULL),
gf_timefmt_FT);
sprintf (tmp_logfile, "%s.%s.%d",
cmd_args->log_file, timestr, getpid ());
/* Create symlink to actual log file */
sys_unlink (cmd_args->log_file);
tmp_logfile_dyn = gf_strdup (tmp_logfile);
tmp_logfilebase = basename (tmp_logfile_dyn);
ret = sys_symlink (tmp_logfilebase,
cmd_args->log_file);
if (ret == -1) {
fprintf (stderr, "ERROR: symlink of logfile failed\n");
goto out;
}
GF_FREE (cmd_args->log_file);
cmd_args->log_file = gf_strdup (tmp_logfile);
GF_FREE (tmp_logfile_dyn);
}
}
#ifdef GF_DARWIN_HOST_OS
if (cmd_args->mount_point)
cmd_args->mac_compat = GF_OPTION_DEFERRED;
#endif
ret = 0;
out:
return ret;
}
int
glusterfs_pidfile_setup (glusterfs_ctx_t *ctx)
{
cmd_args_t *cmd_args = NULL;
int ret = -1;
FILE *pidfp = NULL;
cmd_args = &ctx->cmd_args;
if (!cmd_args->pid_file)
return 0;
pidfp = fopen (cmd_args->pid_file, "a+");
if (!pidfp) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"pidfile %s error (%s)",
cmd_args->pid_file, strerror (errno));
goto out;
}
ret = lockf (fileno (pidfp), F_TLOCK, 0);
if (ret) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"pidfile %s lock error (%s)",
cmd_args->pid_file, strerror (errno));
goto out;
}
gf_log ("glusterfsd", GF_LOG_TRACE,
"pidfile %s lock acquired",
cmd_args->pid_file);
ret = lockf (fileno (pidfp), F_ULOCK, 0);
if (ret) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"pidfile %s unlock error (%s)",
cmd_args->pid_file, strerror (errno));
goto out;
}
ctx->pidfp = pidfp;
ret = 0;
out:
if (ret && pidfp)
fclose (pidfp);
return ret;
}
int
glusterfs_pidfile_cleanup (glusterfs_ctx_t *ctx)
{
cmd_args_t *cmd_args = NULL;
cmd_args = &ctx->cmd_args;
if (!ctx->pidfp)
return 0;
gf_log ("glusterfsd", GF_LOG_TRACE,
"pidfile %s cleanup",
cmd_args->pid_file);
if (ctx->cmd_args.pid_file) {
unlink (ctx->cmd_args.pid_file);
ctx->cmd_args.pid_file = NULL;
}
lockf (fileno (ctx->pidfp), F_ULOCK, 0);
fclose (ctx->pidfp);
ctx->pidfp = NULL;
return 0;
}
int
glusterfs_pidfile_update (glusterfs_ctx_t *ctx)
{
cmd_args_t *cmd_args = NULL;
int ret = 0;
FILE *pidfp = NULL;
cmd_args = &ctx->cmd_args;
pidfp = ctx->pidfp;
if (!pidfp)
return 0;
ret = lockf (fileno (pidfp), F_TLOCK, 0);
if (ret) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"pidfile %s lock failed",
cmd_args->pid_file);
return ret;
}
ret = ftruncate (fileno (pidfp), 0);
if (ret) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"pidfile %s truncation failed",
cmd_args->pid_file);
return ret;
}
ret = fprintf (pidfp, "%d\n", getpid ());
if (ret <= 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"pidfile %s write failed",
cmd_args->pid_file);
return ret;
}
ret = fflush (pidfp);
if (ret) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"pidfile %s write failed",
cmd_args->pid_file);
return ret;
}
gf_log ("glusterfsd", GF_LOG_DEBUG,
"pidfile %s updated with pid %d",
cmd_args->pid_file, getpid ());
return 0;
}
void *
glusterfs_sigwaiter (void *arg)
{
sigset_t set;
int ret = 0;
int sig = 0;
sigemptyset (&set);
sigaddset (&set, SIGINT); /* cleanup_and_exit */
sigaddset (&set, SIGTERM); /* cleanup_and_exit */
sigaddset (&set, SIGHUP); /* reincarnate */
sigaddset (&set, SIGUSR1); /* gf_proc_dump_info */
sigaddset (&set, SIGUSR2); /* gf_latency_toggle */
for (;;) {
ret = sigwait (&set, &sig);
if (ret)
continue;
switch (sig) {
case SIGINT:
case SIGTERM:
cleanup_and_exit (sig);
break;
case SIGHUP:
reincarnate (sig);
break;
case SIGUSR1:
gf_proc_dump_info (sig, glusterfsd_ctx);
break;
case SIGUSR2:
gf_latency_toggle (sig, glusterfsd_ctx);
break;
default:
break;
}
}
return NULL;
}
void
glusterfsd_print_trace (int signum)
{
gf_print_trace (signum, glusterfsd_ctx);
}
int
glusterfs_signals_setup (glusterfs_ctx_t *ctx)
{
sigset_t set;
int ret = 0;
sigemptyset (&set);
/* common setting for all threads */
signal (SIGSEGV, glusterfsd_print_trace);
signal (SIGABRT, glusterfsd_print_trace);
signal (SIGILL, glusterfsd_print_trace);
signal (SIGTRAP, glusterfsd_print_trace);
signal (SIGFPE, glusterfsd_print_trace);
signal (SIGBUS, glusterfsd_print_trace);
signal (SIGINT, cleanup_and_exit);
signal (SIGPIPE, SIG_IGN);
/* block these signals from non-sigwaiter threads */
sigaddset (&set, SIGTERM); /* cleanup_and_exit */
sigaddset (&set, SIGHUP); /* reincarnate */
sigaddset (&set, SIGUSR1); /* gf_proc_dump_info */
sigaddset (&set, SIGUSR2); /* gf_latency_toggle */
ret = pthread_sigmask (SIG_BLOCK, &set, NULL);
if (ret) {
gf_log ("glusterfsd", GF_LOG_WARNING,
"failed to execute pthread_signmask %s",
strerror (errno));
return ret;
}
ret = pthread_create (&ctx->sigwaiter, NULL, glusterfs_sigwaiter,
(void *) &set);
if (ret) {
/*
TODO:
fallback to signals getting handled by other threads.
setup the signal handlers
*/
gf_log ("glusterfsd", GF_LOG_WARNING,
"failed to create pthread %s",
strerror (errno));
return ret;
}
return ret;
}
int
daemonize (glusterfs_ctx_t *ctx)
{
int ret = -1;
cmd_args_t *cmd_args = NULL;
int cstatus = 0;
int err = 0;
cmd_args = &ctx->cmd_args;
ret = glusterfs_pidfile_setup (ctx);
if (ret)
goto out;
if (cmd_args->no_daemon_mode)
goto postfork;
if (cmd_args->debug_mode)
goto postfork;
ret = pipe (ctx->daemon_pipe);
if (ret) {
/* If pipe() fails, retain daemon_pipe[] = {-1, -1}
and parent will just not wait for child status
*/
ctx->daemon_pipe[0] = -1;
ctx->daemon_pipe[1] = -1;
}
ret = os_daemon_return (0, 0);
switch (ret) {
case -1:
if (ctx->daemon_pipe[0] != -1) {
close (ctx->daemon_pipe[0]);
close (ctx->daemon_pipe[1]);
}
gf_log ("daemonize", GF_LOG_ERROR,
"Daemonization failed: %s", strerror(errno));
goto out;
case 0:
/* child */
/* close read */
close (ctx->daemon_pipe[0]);
break;
default:
/* parent */
/* close write */
close (ctx->daemon_pipe[1]);
if (ctx->mnt_pid > 0) {
ret = waitpid (ctx->mnt_pid, &cstatus, 0);
if (!(ret == ctx->mnt_pid && cstatus == 0)) {
gf_log ("daemonize", GF_LOG_ERROR,
"mount failed");
exit (1);
}
}
err = 1;
read (ctx->daemon_pipe[0], (void *)&err, sizeof (err));
_exit (err);
}
postfork:
ret = glusterfs_pidfile_update (ctx);
if (ret)
goto out;
glusterfs_signals_setup (ctx);
out:
return ret;
}
int
glusterfs_process_volfp (glusterfs_ctx_t *ctx, FILE *fp)
{
glusterfs_graph_t *graph = NULL;
int ret = -1;
xlator_t *trav = NULL;
graph = glusterfs_graph_construct (fp);
if (!graph) {
gf_log ("", GF_LOG_ERROR, "failed to construct the graph");
goto out;
}
for (trav = graph->first; trav; trav = trav->next) {
if (strcmp (trav->type, "mount/fuse") == 0) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"fuse xlator cannot be specified "
"in volume file");
goto out;
}
}
ret = glusterfs_graph_prepare (graph, ctx);
if (ret) {
glusterfs_graph_destroy (graph);
goto out;
}
ret = glusterfs_graph_activate (graph, ctx);
if (ret) {
glusterfs_graph_destroy (graph);
goto out;
}
gf_log_dump_graph (fp, graph);
ret = 0;
out:
if (fp)
fclose (fp);
if (ret && !ctx->active) {
/* there is some error in setting up the first graph itself */
cleanup_and_exit (0);
}
return ret;
}
int
glusterfs_volumes_init (glusterfs_ctx_t *ctx)
{
FILE *fp = NULL;
cmd_args_t *cmd_args = NULL;
int ret = 0;
cmd_args = &ctx->cmd_args;
if (cmd_args->sock_file) {
ret = glusterfs_listener_init (ctx);
if (ret)
goto out;
}
if (cmd_args->volfile_server) {
ret = glusterfs_mgmt_init (ctx);
/* return, do not emancipate() yet */
return ret;
}
fp = get_volfp (ctx);
if (!fp) {
gf_log ("glusterfsd", GF_LOG_ERROR,
"Cannot reach volume specification file");
ret = -1;
goto out;
}
ret = glusterfs_process_volfp (ctx, fp);
if (ret)
goto out;
out:
emancipate (ctx, ret);
return ret;
}
/* This is the only legal global pointer */
glusterfs_ctx_t *glusterfsd_ctx;
int
main (int argc, char *argv[])
{
glusterfs_ctx_t *ctx = NULL;
int ret = -1;
char cmdlinestr[PATH_MAX] = {0,};
ctx = glusterfs_ctx_new ();
if (!ctx) {
gf_log ("glusterfs", GF_LOG_CRITICAL,
"ERROR: glusterfs context not initialized");
return ENOMEM;
}
glusterfsd_ctx = ctx;
#ifdef DEBUG
gf_mem_acct_enable_set (ctx);
#else
/* Enable memory accounting on the fly based on argument */
gf_check_and_set_mem_acct (ctx, argc, argv);
#endif
ret = glusterfs_globals_init (ctx);
if (ret)
return ret;
THIS->ctx = ctx;
ret = glusterfs_ctx_defaults_init (ctx);
if (ret)
goto out;
ret = parse_cmdline (argc, argv, ctx);
if (ret)
goto out;
ret = logging_init (ctx, argv[0]);
if (ret)
goto out;
/* log the version of glusterfs running here along with the actual
command line options. */
{
int i = 0;
strcpy (cmdlinestr, argv[0]);
for (i = 1; i < argc; i++) {
strcat (cmdlinestr, " ");
strcat (cmdlinestr, argv[i]);
}
gf_log (argv[0], GF_LOG_INFO,
"Started running %s version %s (%s)",
argv[0], PACKAGE_VERSION, cmdlinestr);
}
gf_proc_dump_init();
ret = create_fuse_mount (ctx);
if (ret)
goto out;
ret = daemonize (ctx);
if (ret)
goto out;
ctx->env = syncenv_new (0, 0, 0);
if (!ctx->env) {
gf_log ("", GF_LOG_ERROR,
"Could not create new sync-environment");
goto out;
}
ret = glusterfs_volumes_init (ctx);
if (ret)
goto out;
ret = event_dispatch (ctx->event_pool);
out:
// glusterfs_ctx_destroy (ctx);
return ret;
}
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