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#include "clusterautoconfig.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/vfs.h>
#include <sys/mount.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <errno.h>
#include <stdarg.h>
#include <libintl.h>
#include <locale.h>
#define _(String) gettext(String)
#include <linux/types.h>
#include "libgfs2.h"
#include "gfs2_mkfs.h"
#include "metafs.h"
#define RANDOM(values) ((values) * (random() / (RAND_MAX + 1.0)))
struct jadd_opts {
char *path;
char *new_inode;
char *per_node;
char *jindex;
unsigned orig_journals;
unsigned journals;
unsigned quiet:1;
unsigned debug:1;
};
#define JA_FL_SET 0
#define JA_FL_CLEAR 1
static void set_flags(int fd, int op, uint32_t flags)
{
int err;
uint32_t val;
err = ioctl(fd, FS_IOC_GETFLAGS, &val);
if (err) {
perror("GETFLAGS");
exit(EXIT_FAILURE);
}
if (op == JA_FL_SET)
val |= flags;
else if (op == JA_FL_CLEAR)
val &= ~flags;
err = ioctl(fd, FS_IOC_SETFLAGS, &val);
if (err) {
perror("SETFLAGS");
exit(EXIT_FAILURE);
}
}
static int rename2system(struct jadd_opts *opts, const char *new_dir, const char *new_name)
{
char *newpath;
int ret;
if (asprintf(&newpath, "%s/%s", new_dir, new_name) < 0) {
perror(_("Failed to allocate new path"));
return -1;
}
ret = rename(opts->new_inode, newpath);
free(newpath);
return ret;
}
static int build_paths(const char *metafs_path, struct jadd_opts *opts)
{
int i = 0;
struct {
char **path;
const char *tail;
} p[] = {
{ &opts->new_inode, "new_inode" },
{ &opts->per_node, "per_node" },
{ &opts->jindex, "jindex" },
{ NULL, NULL}
};
while (p[i].path != NULL) {
if (asprintf(p[i].path, "%s/%s", metafs_path, p[i].tail) < 0) {
while (i > 0)
free(*p[--i].path);
return 1;
}
if (opts->debug)
printf("%d: %s\n", i, *p[i].path);
i++;
}
return 0;
}
/**
* print_usage - print out usage information
* @prog_name: The name of this program
*/
static void print_usage(const char *prog_name)
{
int i;
const char *option, *param, *desc;
const char *options[] = {
/* Translators: This is a usage string printed with --help.
<size> and <number> here are the commandline parameters,
e.g. gfs2_jadd -j <number> /dev/sda */
"-c", "<size>", _("Size of quota change file, in megabytes"),
"-D", NULL, _("Enable debugging code"),
"-h", NULL, _("Display this help, then exit"),
"-J", "<size>", _("Size of journals, in megabytes"),
"-j", "<number>", _("Number of journals"),
"-q", NULL, _("Don't print anything"),
"-V", NULL, _("Display version information, then exit"),
NULL, NULL, NULL /* Must be kept at the end */
};
printf("%s\n", _("Usage:"));
printf("%s [%s] <%s>\n\n", prog_name, _("options"), _("device"));
printf(_("Adds journals to a GFS2 file system."));
printf("\n\n%s\n", _("Options:"));
for (i = 0; options[i] != NULL; i += 3) {
option = options[i];
param = options[i+1];
desc = options[i+2];
printf("%3s %-15s %s\n", option, param ? param : "", desc);
}
}
/**
* decode_arguments - decode command line arguments and fill in the struct gfs2_sbd
* @argc:
* @argv:
* @sdp: the decoded command line arguments
*
*/
static void decode_arguments(int argc, char *argv[], struct gfs2_sbd *sdp, struct jadd_opts *opts)
{
int cont = TRUE;
int optchar;
while (cont) {
optchar = getopt(argc, argv, "c:DhJ:j:qu:V");
switch (optchar) {
case 'c':
sdp->qcsize = atoi(optarg);
break;
case 'D':
opts->debug = 1;
lgfs2_set_debug(1);
break;
case 'h':
print_usage(argv[0]);
exit(0);
break;
case 'J':
sdp->jsize = atoi(optarg);
break;
case 'j':
opts->journals = atoi(optarg);
break;
case 'q':
opts->quiet = 1;
break;
case 'V':
printf("gfs2_jadd %s\n", VERSION);
printf(REDHAT_COPYRIGHT "\n");
exit(0);
break;
case ':':
case '?':
fprintf(stderr, _("Please use '-h' for help.\n"));
exit(EXIT_FAILURE);
break;
case EOF:
cont = FALSE;
break;
default:
die( _("Invalid option: %c\n"), optchar);
break;
};
}
if (optind < argc) {
opts->path = argv[optind];
optind++;
} else
die( _("no path specified (try -h for help)\n"));
if (optind < argc)
die( _("Unrecognized argument: %s\n"), argv[optind]);
if (opts->debug) {
printf( _("Command line arguments:\n"));
printf(" qcsize = %u\n", sdp->qcsize);
printf(" jsize = %u\n", sdp->jsize);
printf(" journals = %u\n", sdp->md.journals);
printf(" quiet = %u\n", opts->quiet);
printf(" path = %s\n", opts->path);
}
}
static void verify_arguments(struct gfs2_sbd *sdp, struct jadd_opts *opts)
{
if (!opts->journals)
die( _("no journals specified\n"));
if (sdp->jsize < 32 || sdp->jsize > 1024)
die( _("bad journal size\n"));
if (!sdp->qcsize || sdp->qcsize > 64)
die( _("bad quota change size\n"));
}
static void print_results(struct jadd_opts *opts)
{
if (opts->debug)
printf("\n");
else if (opts->quiet)
return;
printf( _("Filesystem: %s\n"), opts->path);
printf( _("Old journals: %u\n"), opts->orig_journals);
printf( _("New journals: %u\n"), opts->journals);
}
static int create_new_inode(struct jadd_opts *opts)
{
char *name = opts->new_inode;
int fd;
int error;
for (;;) {
fd = open(name, O_WRONLY | O_CREAT | O_EXCL | O_NOFOLLOW | O_CLOEXEC, 0600);
if (fd >= 0)
break;
if (errno == EEXIST) {
error = unlink(name);
if (error){
perror("unlink");
exit(EXIT_FAILURE);
}
} else{
perror("create");
exit(EXIT_FAILURE);
}
}
return fd;
}
static void add_ir(struct jadd_opts *opts)
{
int fd;
char new_name[256];
int error;
fd = create_new_inode(opts);
{
struct gfs2_inum_range ir;
set_flags(fd, JA_FL_SET, FS_JOURNAL_DATA_FL);
memset(&ir, 0, sizeof(struct gfs2_inum_range));
if (write(fd, (void*)&ir, sizeof(struct gfs2_inum_range)) !=
sizeof(struct gfs2_inum_range)) {
perror("add_ir");
exit(EXIT_FAILURE);
}
}
close(fd);
sprintf(new_name, "inum_range%u", opts->journals);
error = rename2system(opts, opts->per_node, new_name);
if (error < 0 && errno != EEXIST){
perror("add_ir rename2system");
exit(EXIT_FAILURE);
}
}
static void add_sc(struct jadd_opts *opts)
{
int fd;
char new_name[256];
int error;
fd = create_new_inode(opts);
{
struct gfs2_statfs_change sc;
set_flags(fd, JA_FL_SET, FS_JOURNAL_DATA_FL);
memset(&sc, 0, sizeof(struct gfs2_statfs_change));
if (write(fd, (void*)&sc, sizeof(struct gfs2_statfs_change)) !=
sizeof(struct gfs2_statfs_change)) {
perror("add_sc");
exit(EXIT_FAILURE);
}
}
close(fd);
sprintf(new_name, "statfs_change%u", opts->journals);
error = rename2system(opts, opts->per_node, new_name);
if (error < 0 && errno != EEXIST){
perror("add_sc rename2system");
exit(EXIT_FAILURE);
}
}
static void add_qc(struct gfs2_sbd *sdp, struct jadd_opts *opts)
{
int fd;
char new_name[256];
int error;
fd = create_new_inode(opts);
{
char buf[sdp->bsize];
unsigned int blocks =
sdp->qcsize << (20 - sdp->sd_sb.sb_bsize_shift);
unsigned int x;
struct gfs2_meta_header mh;
struct gfs2_buffer_head dummy_bh;
dummy_bh.b_data = buf;
set_flags(fd, JA_FL_CLEAR, FS_JOURNAL_DATA_FL);
memset(buf, 0, sdp->bsize);
for (x=0; x<blocks; x++) {
if (write(fd, buf, sdp->bsize) != sdp->bsize) {
perror("add_qc");
exit(EXIT_FAILURE);
}
}
lseek(fd, 0, SEEK_SET);
memset(&mh, 0, sizeof(struct gfs2_meta_header));
mh.mh_magic = GFS2_MAGIC;
mh.mh_type = GFS2_METATYPE_QC;
mh.mh_format = GFS2_FORMAT_QC;
gfs2_meta_header_out_bh(&mh, &dummy_bh);
for (x=0; x<blocks; x++) {
if (write(fd, buf, sdp->bsize) != sdp->bsize) {
perror("add_qc");
exit(EXIT_FAILURE);
}
}
error = fsync(fd);
if (error){
perror("add_qc fsync");
exit(EXIT_FAILURE);
}
}
close(fd);
sprintf(new_name, "quota_change%u", opts->journals);
error = rename2system(opts, opts->per_node, new_name);
if (error < 0 && errno != EEXIST){
perror("add_qc rename2system");
exit(EXIT_FAILURE);
}
}
static void gather_info(struct gfs2_sbd *sdp, struct jadd_opts *opts)
{
struct statfs statbuf;
if (statfs(opts->path, &statbuf) < 0) {
perror(opts->path);
exit(EXIT_FAILURE);
}
sdp->bsize = statbuf.f_bsize;
}
static void find_current_journals(struct jadd_opts *opts)
{
struct dirent *dp;
DIR *dirp;
unsigned existing_journals = 0;
dirp = opendir(opts->jindex);
if (!dirp) {
perror("jindex");
exit(EXIT_FAILURE);
}
while (dirp) {
if ((dp = readdir(dirp)) != NULL) {
if (strncmp(dp->d_name, "journal", 7) == 0)
existing_journals++;
} else
goto close;
}
close:
closedir(dirp);
if (existing_journals == 0) {
die( _("No journals found. Did you run mkfs.gfs2 correctly?\n"));
}
opts->orig_journals = existing_journals;
}
static void add_j(struct gfs2_sbd *sdp, struct jadd_opts *opts)
{
int fd;
char new_name[256];
int error;
fd = create_new_inode(opts);
{
char buf[sdp->bsize];
unsigned int blocks =
sdp->jsize << (20 - sdp->sd_sb.sb_bsize_shift);
unsigned int x;
struct gfs2_log_header lh;
uint64_t seq = RANDOM(blocks);
set_flags(fd, JA_FL_CLEAR, FS_JOURNAL_DATA_FL);
memset(buf, 0, sdp->bsize);
for (x=0; x<blocks; x++) {
if (write(fd, buf, sdp->bsize) != sdp->bsize) {
perror("add_j");
exit(EXIT_FAILURE);
}
}
lseek(fd, 0, SEEK_SET);
memset(&lh, 0, sizeof(struct gfs2_log_header));
lh.lh_header.mh_magic = GFS2_MAGIC;
lh.lh_header.mh_type = GFS2_METATYPE_LH;
lh.lh_header.mh_format = GFS2_FORMAT_LH;
lh.lh_flags = GFS2_LOG_HEAD_UNMOUNT;
for (x=0; x<blocks; x++) {
uint32_t hash;
struct gfs2_buffer_head dummy_bh;
dummy_bh.b_data = buf;
lh.lh_sequence = seq;
lh.lh_blkno = x;
gfs2_log_header_out(&lh, &dummy_bh);
hash = gfs2_disk_hash(buf, sizeof(struct gfs2_log_header));
((struct gfs2_log_header *)buf)->lh_hash = cpu_to_be32(hash);
if (write(fd, buf, sdp->bsize) != sdp->bsize) {
perror("add_j");
exit(EXIT_FAILURE);
}
if (++seq == blocks)
seq = 0;
}
error = fsync(fd);
if (error){
perror("add_j fsync");
exit(EXIT_FAILURE);
}
}
close(fd);
sprintf(new_name, "journal%u", opts->journals);
error = rename2system(opts, opts->jindex, new_name);
if (error < 0 && errno != EEXIST){
perror("add_j rename2system");
exit(EXIT_FAILURE);
}
}
int main(int argc, char *argv[])
{
struct jadd_opts opts = {0};
struct gfs2_sbd sbd, *sdp = &sbd;
struct metafs mfs = {0};
struct mntent *mnt;
unsigned int total;
setlocale(LC_ALL, "");
textdomain("gfs2-utils");
srandom(time(NULL) ^ getpid());
memset(sdp, 0, sizeof(struct gfs2_sbd));
sdp->jsize = GFS2_DEFAULT_JSIZE;
sdp->qcsize = GFS2_DEFAULT_QCSIZE;
opts.journals = 1;
decode_arguments(argc, argv, sdp, &opts);
verify_arguments(sdp, &opts);
sbd.path_fd = lgfs2_open_mnt_dir(opts.path, O_RDONLY|O_CLOEXEC, &mnt);
if (sbd.path_fd < 0) {
fprintf(stderr, _("Error looking up mount '%s': %s\n"), opts.path, strerror(errno));
exit(EXIT_FAILURE);
}
if (mnt == NULL) {
fprintf(stderr, _("%s: not a mounted gfs2 file system\n"), opts.path);
exit(EXIT_FAILURE);
}
gather_info(sdp, &opts);
mfs.context = copy_context_opt(mnt);
if (mount_gfs2_meta(&mfs, mnt->mnt_dir, opts.debug)) {
perror("GFS2 metafs");
exit(EXIT_FAILURE);
}
if (build_paths(mfs.path, &opts)) {
perror(_("Failed to build paths"));
exit(EXIT_FAILURE);
}
if (compute_constants(sdp)) {
perror(_("Failed to compute file system constants"));
exit(EXIT_FAILURE);
}
find_current_journals(&opts);
total = opts.orig_journals + opts.journals;
for (opts.journals = opts.orig_journals;
opts.journals < total;
opts.journals++) {
if (metafs_interrupted) {
cleanup_metafs(&mfs);
exit(130);
}
add_ir(&opts);
add_sc(&opts);
add_qc(sdp, &opts);
add_j(sdp, &opts);
}
free(opts.new_inode);
free(opts.per_node);
free(opts.jindex);
close(sdp->path_fd);
cleanup_metafs(&mfs);
sync();
print_results(&opts);
return 0;
}
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