#include <limits.h>
#include <ctype.h>
+#include <ext2fs/ext2fs.h>
+
#ifndef BLKGETSIZE64
#include <linux/fs.h> /* for BLKGETSIZE64 */
#endif
extern char *progname;
+static ext2_filsys backfs;
+static int open_flags = EXT2_FLAG_64BITS | EXT2_FLAG_SKIP_MMP |
+ EXT2_FLAG_IGNORE_SB_ERRORS | EXT2_FLAG_SUPER_ONLY;
+
/* keep it less than LL_FID_NAMELEN */
#define DUMMY_FILE_NAME_LEN 25
#define EXT3_DIRENT_SIZE DUMMY_FILE_NAME_LEN
return ret;
}
-static int is_feature_enabled(const char *feature, const char *devpath)
-{
- char cmd[PATH_MAX];
- FILE *fp;
- char enabled_features[4096] = "";
- int ret = 1;
-
- snprintf(cmd, sizeof(cmd), "%s -c -R features %s 2>&1",
- DEBUGFS, devpath);
-
- /* Using popen() instead of run_command() since debugfs does
- * not return proper error code if command is not supported */
- fp = popen(cmd, "r");
- if (!fp) {
- fprintf(stderr, "%s: %s\n", progname, strerror(errno));
- return 0;
- }
-
- ret = fread(enabled_features, 1, sizeof(enabled_features) - 1, fp);
- enabled_features[ret] = '\0';
- pclose(fp);
-
- if (strstr(enabled_features, feature))
- return 1;
- return 0;
-}
-
/* Write the server config files */
int ldiskfs_write_ldd(struct mkfs_opts *mop)
{
dev = mop->mo_loopdev;
/* Multiple mount protection enabled if failover node specified */
- if (mop->mo_flags & MO_FAILOVER &&
- !is_feature_enabled("mmp", dev)) {
- if (is_e2fsprogs_feature_supp("-O mmp")) {
- char *command = filepnm;
-
- snprintf(command, sizeof(filepnm),
- TUNE2FS" -O mmp '%s' >/dev/null 2>&1", dev);
- ret = run_command(command, sizeof(filepnm));
- if (ret)
- fprintf(stderr,
- "%s: Unable to set 'mmp' on %s: %d\n",
- progname, dev, ret);
- } else {
- disp_old_e2fsprogs_msg("mmp", 1);
+ if (mop->mo_flags & MO_FAILOVER) {
+ if (!backfs)
+ ext2fs_open(dev, open_flags, 0, 0,
+ unix_io_manager, &backfs);
+ if (!backfs || !ext2fs_has_feature_mmp(backfs->super)) {
+ if (is_e2fsprogs_feature_supp("-O mmp")) {
+ char *command = filepnm;
+
+ snprintf(command, sizeof(filepnm),
+ TUNE2FS" -O mmp '%s' >/dev/null 2>&1",
+ dev);
+ ret = run_command(command, sizeof(filepnm));
+ if (ret)
+ fprintf(stderr,
+ "%s: Unable to set 'mmp' "
+ "on %s: %d\n",
+ progname, dev, ret);
+ } else {
+ disp_old_e2fsprogs_msg("mmp", 1);
+ }
+ /* avoid stale cache after following operations */
+ if (backfs) {
+ ext2fs_close(backfs);
+ backfs = NULL;
+ }
}
}
int ldiskfs_read_ldd(char *dev, struct lustre_disk_data *mo_ldd)
{
- char tmpdir[] = "/tmp/dirXXXXXX";
+ errcode_t retval;
+ ext2_ino_t ino;
+ ext2_file_t file;
+ unsigned int got;
char cmd[PATH_MAX];
- char filepnm[128];
- FILE *filep;
int ret = 0;
- int cmdsz = sizeof(cmd);
-
- /* Make a temporary directory to hold Lustre data files. */
- if (!mkdtemp(tmpdir)) {
- fprintf(stderr, "%s: Can't create temporary directory %s: %s\n",
- progname, tmpdir, strerror(errno));
- return errno;
- }
-
- /* TODO: it's worth observing the get_mountdata() function that is
- in mount_utils.c for getting the mountdata out of the
- filesystem */
- /* Construct debugfs command line. */
- snprintf(cmd, cmdsz, "%s -c -R 'dump /%s %s/mountdata' '%s'",
- DEBUGFS, MOUNT_DATA_FILE, tmpdir, dev);
-
- ret = run_command(cmd, cmdsz);
- if (ret)
- verrprint("%s: Unable to dump %s dir (%d)\n",
- progname, MOUNT_CONFIGS_DIR, ret);
-
- sprintf(filepnm, "%s/mountdata", tmpdir);
- filep = fopen(filepnm, "r");
- if (filep) {
- size_t num_read;
- vprint("Reading %s\n", MOUNT_DATA_FILE);
- num_read = fread(mo_ldd, sizeof(*mo_ldd), 1, filep);
- if (num_read < 1 && ferror(filep)) {
- fprintf(stderr, "%s: Unable to read from file %s: %s\n",
- progname, filepnm, strerror(errno));
+ if (!backfs) {
+ retval = ext2fs_open(dev, open_flags, 0, 0,
+ unix_io_manager, &backfs);
+ if (retval) {
+ fprintf(stderr, "Unable to open fs on %s\n", dev);
+ goto read_label;
}
- fclose(filep);
}
-
- snprintf(cmd, cmdsz, "rm -rf %s", tmpdir);
- run_command(cmd, cmdsz);
- if (ret)
- verrprint("Failed to read old data (%d)\n", ret);
-
+ retval = ext2fs_namei(backfs, EXT2_ROOT_INO, EXT2_ROOT_INO,
+ MOUNT_DATA_FILE, &ino);
+ if (retval) {
+ fprintf(stderr, "Error while looking up %s\n", MOUNT_DATA_FILE);
+ goto read_label;
+ }
+ retval = ext2fs_file_open(backfs, ino, 0, &file);
+ if (retval) {
+ fprintf(stderr, "Error while opening file %s\n",
+ MOUNT_DATA_FILE);
+ goto read_label;
+ }
+ retval = ext2fs_file_read(file, mo_ldd, sizeof(*mo_ldd), &got);
+ if (retval || got == 0)
+ fprintf(stderr, "Failed to read file %s\n", MOUNT_DATA_FILE);
+read_label:
/* As long as we at least have the label, we're good to go */
snprintf(cmd, sizeof(cmd), E2LABEL" %s", dev);
ret = readcmd(cmd, mo_ldd->ldd_svname, sizeof(mo_ldd->ldd_svname) - 1);
/* Check whether the file exists in the device */
static int file_in_dev(char *file_name, char *dev_name)
{
- FILE *fp;
- char debugfs_cmd[256];
- unsigned int inode_num;
- int i;
-
- /* Construct debugfs command line. */
- snprintf(debugfs_cmd, sizeof(debugfs_cmd),
- "%s -c -R 'stat %s' '%s' 2>&1 | egrep '(Inode|unsupported)'",
- DEBUGFS, file_name, dev_name);
-
- fp = popen(debugfs_cmd, "r");
- if (!fp) {
- fprintf(stderr, "%s: %s\n", progname, strerror(errno));
- return 0;
- }
+ ext2_ino_t ino;
+ errcode_t retval;
- if (fscanf(fp, "Inode: %u", &inode_num) == 1) { /* exist */
- pclose(fp);
- return 1;
- }
- i = fread(debugfs_cmd, 1, sizeof(debugfs_cmd) - 1, fp);
- if (i) {
- debugfs_cmd[i] = 0;
- fprintf(stderr, "%s", debugfs_cmd);
- if (strstr(debugfs_cmd, "unsupported feature")) {
- disp_old_e2fsprogs_msg("an unknown", 0);
- }
- pclose(fp);
- return -1;
+ if (!backfs) {
+ retval = ext2fs_open(dev_name, open_flags, 0, 0,
+ unix_io_manager, &backfs);
+ if (retval)
+ return 0;
}
- pclose(fp);
+ retval = ext2fs_namei(backfs, EXT2_ROOT_INO, EXT2_ROOT_INO,
+ file_name, &ino);
+ if (!retval)
+ return 1;
+
return 0;
}
dev = mop->mo_loopdev;
/* Quota feature is already enabled? */
- if (is_feature_enabled("quota", dev)) {
+ if (!backfs)
+ ext2fs_open(dev, open_flags, 0, 0, unix_io_manager, &backfs);
+ if (backfs && ext2fs_has_feature_quota(backfs->super)) {
vprint("Quota feature is already enabled.\n");
return 0;
}
void ldiskfs_fini(void)
{
- return;
+ if (backfs) {
+ ext2fs_close(backfs);
+ backfs = NULL;
+ }
}
#ifndef PLUGIN_DIR
git://git.whamcloud.com / fs / lustre-release.git / commitdiff