-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
# include "config.h"
#endif /* HAVE_CONFIG_H */
+#include "mount_utils.h"
+#include <mntent.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
+#include <unistd.h>
#include <config.h>
#include <lustre_disk.h>
#include <lustre_ver.h>
+#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/utsname.h>
+#include <linux/loop.h>
+#include <dlfcn.h>
extern char *progname;
extern int verbose;
#define vprint(fmt, arg...) if (verbose > 0) printf(fmt, ##arg)
#define verrprint(fmt, arg...) if (verbose >= 0) fprintf(stderr, fmt, ##arg)
+static struct module_backfs_ops *backfs_ops[LDD_MT_LAST];
+
void fatal(void)
{
verbose = 0;
return rc;
}
-int get_mountdata(char *dev, struct lustre_disk_data *mo_ldd)
+int add_param(char *buf, char *key, char *val)
{
+ int end = sizeof(((struct lustre_disk_data *)0)->ldd_params);
+ int start = strlen(buf);
+ int keylen = 0;
+
+ if (key)
+ keylen = strlen(key);
+ if (start + 1 + keylen + strlen(val) >= end) {
+ fprintf(stderr, "%s: params are too long-\n%s %s%s\n",
+ progname, buf, key ? key : "", val);
+ return 1;
+ }
+
+ sprintf(buf + start, " %s%s", key ? key : "", val);
+ return 0;
+}
- char tmpdir[] = "/tmp/lustre_tmp.XXXXXX";
- char cmd[256];
- char filepnm[128];
- FILE *filep;
- int ret = 0;
- int ret2 = 0;
- int cmdsz = sizeof(cmd);
+int get_param(char *buf, char *key, char **val)
+{
+ int i, key_len = strlen(key);
+ char *ptr;
- /* Make a temporary directory to hold Lustre data files. */
- if (!mkdtemp(tmpdir)) {
- verrprint("%s: Can't create temporary directory %s: %s\n",
- progname, tmpdir, strerror(errno));
- return errno;
- }
+ ptr = strstr(buf, key);
+ if (ptr) {
+ *val = strdup(ptr + key_len);
+ if (*val == NULL)
+ return ENOMEM;
- snprintf(cmd, cmdsz, "%s -c -R 'dump /%s %s/mountdata' %s",
- DEBUGFS, MOUNT_DATA_FILE, tmpdir, dev);
+ for (i = 0; i < strlen(*val); i++)
+ if (((*val)[i] == ' ') || ((*val)[i] == '\0'))
+ break;
- ret = run_command(cmd, cmdsz);
- if (ret) {
- verrprint("%s: Unable to dump %s dir (%d)\n",
- progname, MOUNT_CONFIGS_DIR, ret);
- goto out_rmdir;
- }
+ (*val)[i] = '\0';
+ return 0;
+ }
- sprintf(filepnm, "%s/mountdata", tmpdir);
- filep = fopen(filepnm, "r");
- if (filep) {
- vprint("Reading %s\n", MOUNT_DATA_FILE);
- fread(mo_ldd, sizeof(*mo_ldd), 1, filep);
- } else {
- verrprint("%s: Unable to read %d.%d config %s.\n",
- progname, LUSTRE_MAJOR, LUSTRE_MINOR, filepnm);
- goto out_close;
- }
+ return ENOENT;
+}
-out_close:
- fclose(filep);
-
-out_rmdir:
- snprintf(cmd, cmdsz, "rm -rf %s", tmpdir);
- ret2 = run_command(cmd, cmdsz);
- if (ret2) {
- verrprint("Failed to remove temp dir %s (%d)\n", tmpdir, ret2);
- /* failure return from run_command() is more important
- * than the failure to remove a dir */
- if (!ret)
- ret = ret2;
- }
+int append_param(char *buf, char *key, char *val, char sep)
+{
+ int key_len, i, offset, old_val_len;
+ char *ptr = NULL, str[1024];
+
+ if (key)
+ ptr = strstr(buf, key);
+
+ /* key doesn't exist yet, so just add it */
+ if (ptr == NULL)
+ return add_param(buf, key, val);
+
+ key_len = strlen(key);
- return ret;
+ /* Copy previous values to str */
+ for (i = 0; i < sizeof(str); ++i) {
+ if ((ptr[i+key_len] == ' ') || (ptr[i+key_len] == '\0'))
+ break;
+ str[i] = ptr[i+key_len];
+ }
+ if (i == sizeof(str))
+ return E2BIG;
+ old_val_len = i;
+
+ offset = old_val_len+key_len;
+
+ /* Move rest of buf to overwrite previous key and value */
+ for (i = 0; ptr[i+offset] != '\0'; ++i)
+ ptr[i] = ptr[i+offset];
+
+ ptr[i] = '\0';
+
+ snprintf(str+old_val_len, sizeof(str)-old_val_len, "%c%s", sep, val);
+
+ return add_param(buf, key, str);
+}
+
+char *strscat(char *dst, char *src, int buflen)
+{
+ dst[buflen - 1] = 0;
+ if (strlen(dst) + strlen(src) >= buflen) {
+ fprintf(stderr, "string buffer overflow (max %d): '%s' + '%s'"
+ "\n", buflen, dst, src);
+ exit(EOVERFLOW);
+ }
+ return strcat(dst, src);
}
-#define PARENT_URN "urn:uuid:2bb5bdbf-6c4b-11dc-9b8e-080020a9ed93"
-#define PARENT_PRODUCT "Lustre"
+char *strscpy(char *dst, char *src, int buflen)
+{
+ dst[0] = 0;
+ return strscat(dst, src, buflen);
+}
-static int stclient(char *type, char *arch)
+int check_mtab_entry(char *spec1, char *spec2, char *mtpt, char *type)
{
+ FILE *fp;
+ struct mntent *mnt;
+
+ fp = setmntent(MOUNTED, "r");
+ if (fp == NULL)
+ return 0;
+
+ while ((mnt = getmntent(fp)) != NULL) {
+ if ((strcmp(mnt->mnt_fsname, spec1) == 0 ||
+ strcmp(mnt->mnt_fsname, spec2) == 0) &&
+ (mtpt == NULL || strcmp(mnt->mnt_dir, mtpt) == 0) &&
+ (type == NULL || strcmp(mnt->mnt_type, type) == 0)) {
+ endmntent(fp);
+ return(EEXIST);
+ }
+ }
+ endmntent(fp);
+
+ return 0;
+}
- char product[64];
- char *urn = NULL;
- char cmd[1024];
- FILE *fp;
- int i;
+#define PROC_DIR "/proc/"
+static int mtab_is_proc(const char *mtab)
+{
+ char path[16];
- if (strcmp(type, "Client") == 0)
- urn = CLIENT_URN;
- else if (strcmp(type, "MDS") == 0)
- urn = MDS_URN;
- else if (strcmp(type, "MGS") == 0)
- urn = MGS_URN;
- else if (strcmp(type, "OSS") == 0)
- urn = OSS_URN;
+ if (readlink(mtab, path, sizeof(path)) < 0)
+ return 0;
- snprintf(product, 64, "Lustre %s %d.%d.%d", type, LUSTRE_MAJOR,
- LUSTRE_MINOR, LUSTRE_PATCH);
+ if (strncmp(path, PROC_DIR, strlen(PROC_DIR)))
+ return 0;
- /* need to see if the entry exists first */
- snprintf(cmd, 1024,
- "/opt/sun/servicetag/bin/stclient -f -t '%s' ", urn);
- fp = popen(cmd, "r");
- if (!fp) {
- if (verbose)
- fprintf(stderr, "%s: trying to run stclient -f: %s\n",
- progname, strerror(errno));
- return 0;
- }
+ return 1;
+}
- i = fread(cmd, 1, sizeof(cmd), fp);
- if (i) {
- cmd[i] = 0;
- if (strcmp(cmd, "Record not found\n") != 0) {
- /* exists, just return */
- pclose(fp);
- return 0;
- }
- }
- pclose(fp);
+int update_mtab_entry(char *spec, char *mtpt, char *type, char *opts,
+ int flags, int freq, int pass)
+{
+ FILE *fp;
+ struct mntent mnt;
+ int rc = 0;
+
+ /* Don't update mtab if it is linked to any file in /proc direcotry.*/
+ if (mtab_is_proc(MOUNTED))
+ return 0;
+
+ mnt.mnt_fsname = spec;
+ mnt.mnt_dir = mtpt;
+ mnt.mnt_type = type;
+ mnt.mnt_opts = opts ? opts : "";
+ mnt.mnt_freq = freq;
+ mnt.mnt_passno = pass;
+
+ fp = setmntent(MOUNTED, "a+");
+ if (fp == NULL) {
+ fprintf(stderr, "%s: setmntent(%s): %s:",
+ progname, MOUNTED, strerror (errno));
+ rc = 16;
+ } else {
+ if ((addmntent(fp, &mnt)) == 1) {
+ fprintf(stderr, "%s: addmntent: %s:",
+ progname, strerror (errno));
+ rc = 16;
+ }
+ endmntent(fp);
+ }
+
+ return rc;
+}
- snprintf(cmd, 1024, "/opt/sun/servicetag/bin/stclient -a -p '%s' "
- "-e %d.%d.%d -t '%s' -S mount -F '%s' -P '%s' -m SUN "
- "-A %s -z global", product, LUSTRE_MAJOR, LUSTRE_MINOR,
- LUSTRE_PATCH, urn, PARENT_URN, PARENT_PRODUCT, arch);
+/* Search for opt in mntlist, returning true if found.
+ */
+static int in_mntlist(char *opt, char *mntlist)
+{
+ char *ml, *mlp, *item, *ctx = NULL;
+
+ if (!(ml = strdup(mntlist))) {
+ fprintf(stderr, "%s: out of memory\n", progname);
+ exit(1);
+ }
+ mlp = ml;
+ while ((item = strtok_r(mlp, ",", &ctx))) {
+ if (!strcmp(opt, item))
+ break;
+ mlp = NULL;
+ }
+ free(ml);
+ return (item != NULL);
+}
- return(run_command(cmd, sizeof(cmd)));
+/* Issue a message on stderr for every item in wanted_mountopts that is not
+ * present in mountopts. The justwarn boolean toggles between error and
+ * warning message. Return an error count.
+ */
+int check_mountfsoptions(char *mountopts, char *wanted_mountopts)
+{
+ char *ml, *mlp, *item, *ctx = NULL;
+ int errors = 0;
+
+ if (!(ml = strdup(wanted_mountopts))) {
+ fprintf(stderr, "%s: out of memory\n", progname);
+ exit(1);
+ }
+ mlp = ml;
+ while ((item = strtok_r(mlp, ",", &ctx))) {
+ if (!in_mntlist(item, mountopts)) {
+ fprintf(stderr, "%s: Error: mandatory mount option"
+ " '%s' is missing\n", progname, item);
+ errors++;
+ }
+ mlp = NULL;
+ }
+ free(ml);
+ return errors;
}
-void register_service_tags(char *usource, char *source, char *target)
+/* Trim embedded white space, leading and trailing commas from string s.
+ */
+void trim_mountfsoptions(char *s)
{
- struct lustre_disk_data mo_ldd;
- struct utsname utsname_buf;
- struct stat stat_buf;
- char stclient_loc[] = "/opt/sun/servicetag/bin/stclient";
- int rc;
+ char *p;
+
+ for (p = s; *p; ) {
+ if (isspace(*p)) {
+ memmove(p, p + 1, strlen(p + 1) + 1);
+ continue;
+ }
+ p++;
+ }
+
+ while (s[0] == ',')
+ memmove(&s[0], &s[1], strlen(&s[1]) + 1);
+
+ p = s + strlen(s) - 1;
+ while (p >= s && *p == ',')
+ *p-- = '\0';
+}
- rc = stat(stclient_loc, &stat_buf);
+/* Setup a file in the first unused loop_device */
+int loop_setup(struct mkfs_opts *mop)
+{
+ char loop_base[20];
+ char l_device[64];
+ int i, ret = 0;
+
+ /* Figure out the loop device names */
+ if (!access("/dev/loop0", F_OK | R_OK) ||
+ !access("/dev/loop-control", F_OK | R_OK)) {
+ strcpy(loop_base, "/dev/loop\0");
+ } else if (!access("/dev/loop/0", F_OK | R_OK)) {
+ strcpy(loop_base, "/dev/loop/\0");
+ } else {
+ fprintf(stderr, "%s: can't access loop devices\n", progname);
+ return EACCES;
+ }
+
+ /* Find unused loop device */
+ for (i = 0; i < MAX_LOOP_DEVICES; i++) {
+ char cmd[PATH_MAX];
+ int cmdsz = sizeof(cmd);
+
+#ifdef HAVE_LOOP_CTL_GET_FREE
+ ret = open("/dev/loop-control", O_RDWR);
+ if (ret < 0) {
+ fprintf(stderr, "%s: can't access loop control\n", progname);
+ return EACCES;
+ }
+ /* find or allocate a free loop device to use */
+ i = ioctl(ret, LOOP_CTL_GET_FREE);
+ if (i < 0) {
+ fprintf(stderr, "%s: access loop control error\n", progname);
+ return EACCES;
+ }
+ sprintf(l_device, "%s%d", loop_base, i);
+#else
+ sprintf(l_device, "%s%d", loop_base, i);
+ if (access(l_device, F_OK | R_OK))
+ break;
+#endif
+ snprintf(cmd, cmdsz, "losetup %s > /dev/null 2>&1", l_device);
+ ret = system(cmd);
+
+ /* losetup gets 1 (ret=256) for non-set-up device */
+ if (ret) {
+ /* Set up a loopback device to our file */
+ snprintf(cmd, cmdsz, "losetup %s %s", l_device,
+ mop->mo_device);
+ ret = run_command(cmd, cmdsz);
+ if (ret == 256)
+ /* someone else picked up this loop device
+ * behind our back */
+ continue;
+ if (ret) {
+ fprintf(stderr, "%s: error %d on losetup: %s\n",
+ progname, ret,
+ ret >= 0 ? strerror(ret) : "");
+ return ret;
+ }
+ strscpy(mop->mo_loopdev, l_device,
+ sizeof(mop->mo_loopdev));
+ return ret;
+ }
+ }
+
+ fprintf(stderr, "%s: out of loop devices!\n", progname);
+ return EMFILE;
+}
- if (rc) {
- if (errno != ENOENT && verbose) {
- fprintf(stderr,
- "%s: trying to stat stclient failed: %s\n",
- progname, strerror(errno));
- }
+int loop_cleanup(struct mkfs_opts *mop)
+{
+ char cmd[150];
+ int ret = 0;
+
+ if ((mop->mo_flags & MO_IS_LOOP) && *mop->mo_loopdev) {
+ int tries;
+
+ sprintf(cmd, "losetup -d %s", mop->mo_loopdev);
+ for (tries = 0; tries < 3; tries++) {
+ ret = run_command(cmd, sizeof(cmd));
+ if (ret == 0)
+ break;
+ sleep(1);
+ }
+ }
+
+ if (ret != 0)
+ fprintf(stderr, "cannot cleanup %s: rc = %d\n",
+ mop->mo_loopdev, ret);
+ return ret;
+}
- return;
- }
+int loop_format(struct mkfs_opts *mop)
+{
+ int fd;
+
+ if (mop->mo_device_kb == 0) {
+ fatal();
+ fprintf(stderr, "loop device requires a --device-size= "
+ "param\n");
+ return EINVAL;
+ }
+
+ fd = creat(mop->mo_device, S_IRUSR|S_IWUSR);
+ if (fd < 0) {
+ fatal();
+ fprintf(stderr, "%s: Unable to create backing store: %s\n",
+ progname, strerror(errno));
+ return errno;
+ }
+
+ if (ftruncate(fd, mop->mo_device_kb * 1024) != 0) {
+ close(fd);
+ fatal();
+ fprintf(stderr, "%s: Unable to truncate backing store: %s\n",
+ progname, strerror(errno));
+ return errno;
+ }
+
+ close(fd);
+ return 0;
+}
- /* call service tags stclient to show Lustre is in use on this system */
- rc = uname(&utsname_buf);
- if (rc) {
- if (verbose)
- fprintf(stderr,
- "%s: trying to get uname failed: %s, "
- "inventory tags will not be created\n",
- progname, strerror(errno));
- return;
- }
+#define DLSYM(prefix, sym, func) \
+ do { \
+ char _fname[64]; \
+ snprintf(_fname, sizeof(_fname), "%s_%s", prefix, #func); \
+ sym->func = (typeof(sym->func))dlsym(sym->dl_handle, _fname); \
+ } while (0)
- /* client or server? */
- if (strchr(usource, ':')) {
- stclient("Client", utsname_buf.machine);
- } else {
- /* first figure what type of device it is */
- rc = get_mountdata(source, &mo_ldd);
- if (rc) {
- if (verbose)
- fprintf(stderr,
- "%s: trying to read mountdata from %s "
- "failed: %s, inventory tags will not "
- "be created\n",
- progname, target, strerror(errno));
- return;
- }
+/**
+ * Load plugin for a given mount_type from ${pkglibdir}/mount_osd_FSTYPE.so and
+ * return struct of function pointers (will be freed in unloack_backfs_module).
+ *
+ * \param[in] mount_type Mount type to load module for.
+ * \retval Value of backfs_ops struct
+ * \retval NULL if no module exists
+ */
+struct module_backfs_ops *load_backfs_module(enum ldd_mount_type mount_type)
+{
+ void *handle;
+ char *error, filename[512], fsname[512], *name;
+ struct module_backfs_ops *ops;
+
+ /* This deals with duplicate ldd_mount_types resolving to same OSD layer
+ * plugin (e.g. ext3/ldiskfs/ldiskfs2 all being ldiskfs) */
+ strncpy(fsname, mt_type(mount_type), sizeof(fsname));
+ name = fsname + sizeof("osd-") - 1;
+
+ /* change osd- to osd_ */
+ fsname[sizeof("osd-") - 2] = '_';
+
+ snprintf(filename, sizeof(filename), PLUGIN_DIR"/mount_%s.so", fsname);
+
+ handle = dlopen(filename, RTLD_LAZY);
+
+ /* Check for $LUSTRE environment variable from test-framework.
+ * This allows using locally built modules to be used.
+ */
+ if (handle == NULL) {
+ char *dirname;
+ dirname = getenv("LUSTRE");
+ if (dirname) {
+ snprintf(filename, sizeof(filename),
+ "%s/utils/.libs/mount_%s.so",
+ dirname, fsname);
+ handle = dlopen(filename, RTLD_LAZY);
+ }
+ }
+
+ /* Do not clutter up console with missing types */
+ if (handle == NULL)
+ return NULL;
+
+ ops = malloc(sizeof(*ops));
+ if (ops == NULL) {
+ dlclose(handle);
+ return NULL;
+ }
+
+ ops->dl_handle = handle;
+ dlerror(); /* Clear any existing error */
+
+ DLSYM(name, ops, init);
+ DLSYM(name, ops, fini);
+ DLSYM(name, ops, read_ldd);
+ DLSYM(name, ops, write_ldd);
+ DLSYM(name, ops, is_lustre);
+ DLSYM(name, ops, make_lustre);
+ DLSYM(name, ops, prepare_lustre);
+ DLSYM(name, ops, tune_lustre);
+ DLSYM(name, ops, label_lustre);
+ DLSYM(name, ops, enable_quota);
+
+ error = dlerror();
+ if (error != NULL) {
+ fatal();
+ fprintf(stderr, "%s\n", error);
+ dlclose(handle);
+ free(ops);
+ return NULL;
+ }
+
+ /* optional methods */
+ DLSYM(name, ops, fix_mountopts);
+
+ return ops;
+}
- if (IS_MDT(&mo_ldd))
- stclient("MDS", utsname_buf.machine);
+/**
+ * Unload plugin and free backfs_ops structure. Must be called the same number
+ * of times as load_backfs_module is.
+ */
+void unload_backfs_module(struct module_backfs_ops *ops)
+{
+ if (ops == NULL)
+ return;
- if (IS_MGS(&mo_ldd))
- stclient("MGS", utsname_buf.machine);
+ dlclose(ops->dl_handle);
+ free(ops);
+}
- if (IS_OST(&mo_ldd))
- stclient("OSS", utsname_buf.machine);
- }
+/* Return true if backfs_ops has operations for the given mount_type. */
+int backfs_mount_type_okay(enum ldd_mount_type mount_type)
+{
+ if (unlikely(mount_type >= LDD_MT_LAST || mount_type < 0)) {
+ fatal();
+ fprintf(stderr, "fs type out of range %d\n", mount_type);
+ return 0;
+ }
+ if (backfs_ops[mount_type] == NULL) {
+ fatal();
+ fprintf(stderr, "unhandled/unloaded fs type %d '%s'\n",
+ mount_type, mt_str(mount_type));
+ return 0;
+ }
+ return 1;
+}
+
+/* Write the server config files */
+int osd_write_ldd(struct mkfs_opts *mop)
+{
+ struct lustre_disk_data *ldd = &mop->mo_ldd;
+ int ret;
+
+ if (backfs_mount_type_okay(ldd->ldd_mount_type))
+ ret = backfs_ops[ldd->ldd_mount_type]->write_ldd(mop);
+
+ else
+ ret = EINVAL;
+
+ return ret;
+}
+
+/* Read the server config files */
+int osd_read_ldd(char *dev, struct lustre_disk_data *ldd)
+{
+ int ret;
+
+ if (backfs_mount_type_okay(ldd->ldd_mount_type))
+ ret = backfs_ops[ldd->ldd_mount_type]->read_ldd(dev, ldd);
+
+ else
+ ret = EINVAL;
+
+ return ret;
+}
+
+/* Was this device formatted for Lustre */
+int osd_is_lustre(char *dev, unsigned *mount_type)
+{
+ int i;
+
+ vprint("checking for existing Lustre data: ");
+
+ for (i = 0; i < LDD_MT_LAST; ++i) {
+ if (backfs_ops[i] != NULL &&
+ backfs_ops[i]->is_lustre(dev, mount_type)) {
+ vprint("found\n");
+ return 1;
+ }
+ }
+
+ vprint("not found\n");
+ return 0;
+}
+
+/* Build fs according to type */
+int osd_make_lustre(struct mkfs_opts *mop)
+{
+ struct lustre_disk_data *ldd = &mop->mo_ldd;
+ int ret;
+
+ if (backfs_mount_type_okay(ldd->ldd_mount_type))
+ ret = backfs_ops[ldd->ldd_mount_type]->make_lustre(mop);
+
+ else
+ ret = EINVAL;
+
+ return ret;
+}
+
+int osd_prepare_lustre(struct mkfs_opts *mop,
+ char *wanted_mountopts, size_t len)
+{
+ struct lustre_disk_data *ldd = &mop->mo_ldd;
+ int ret;
+
+ if (backfs_mount_type_okay(ldd->ldd_mount_type))
+ ret = backfs_ops[ldd->ldd_mount_type]->prepare_lustre(mop,
+ wanted_mountopts, len);
+
+ else
+ ret = EINVAL;
+
+ return ret;
+}
+
+int osd_fix_mountopts(struct mkfs_opts *mop, char *mountopts, size_t len)
+{
+ struct lustre_disk_data *ldd = &mop->mo_ldd;
+
+ if (!backfs_mount_type_okay(ldd->ldd_mount_type))
+ return EINVAL;
+
+ if (backfs_ops[ldd->ldd_mount_type]->fix_mountopts == NULL)
+ return 0;
+
+ return backfs_ops[ldd->ldd_mount_type]->fix_mountopts(mop, mountopts,
+ len);
+}
+
+int osd_tune_lustre(char *dev, struct mount_opts *mop)
+{
+ struct lustre_disk_data *ldd = &mop->mo_ldd;
+ int ret;
+
+ if (backfs_mount_type_okay(ldd->ldd_mount_type))
+ ret = backfs_ops[ldd->ldd_mount_type]->tune_lustre(dev, mop);
+
+ else
+ ret = EINVAL;
+
+ return ret;
+}
+
+int osd_label_lustre(struct mount_opts *mop)
+{
+ struct lustre_disk_data *ldd = &mop->mo_ldd;
+ int ret;
+
+ if (backfs_mount_type_okay(ldd->ldd_mount_type))
+ ret = backfs_ops[ldd->ldd_mount_type]->label_lustre(mop);
+
+ else
+ ret = EINVAL;
+
+ return ret;
+}
+
+/* Enable quota accounting */
+int osd_enable_quota(struct mkfs_opts *mop)
+{
+ struct lustre_disk_data *ldd = &mop->mo_ldd;
+ int ret;
+
+ if (backfs_mount_type_okay(ldd->ldd_mount_type))
+ ret = backfs_ops[ldd->ldd_mount_type]->enable_quota(mop);
+
+ else
+ ret = EINVAL;
+
+ return ret;
+}
+
+int osd_init(void)
+{
+ int i, rc, ret = EINVAL;
+
+ for (i = 0; i < LDD_MT_LAST; ++i) {
+ rc = 0;
+ backfs_ops[i] = load_backfs_module(i);
+ if (backfs_ops[i] != NULL)
+ rc = backfs_ops[i]->init();
+ if (rc != 0) {
+ backfs_ops[i]->fini();
+ unload_backfs_module(backfs_ops[i]);
+ backfs_ops[i] = NULL;
+ } else
+ ret = 0;
+ }
+
+ return ret;
+}
+
+void osd_fini(void)
+{
+ int i;
+
+ for (i = 0; i < LDD_MT_LAST; ++i) {
+ if (backfs_ops[i] != NULL) {
+ backfs_ops[i]->fini();
+ unload_backfs_module(backfs_ops[i]);
+ backfs_ops[i] = NULL;
+ }
+ }
+}
+
+__u64 get_device_size(char* device)
+{
+ int ret, fd;
+ __u64 size = 0;
+
+ fd = open(device, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "%s: cannot open %s: %s\n",
+ progname, device, strerror(errno));
+ return 0;
+ }
+
+#ifdef BLKGETSIZE64
+ /* size in bytes. bz5831 */
+ ret = ioctl(fd, BLKGETSIZE64, (void*)&size);
+#else
+ {
+ __u32 lsize = 0;
+ /* size in blocks */
+ ret = ioctl(fd, BLKGETSIZE, (void*)&lsize);
+ size = (__u64)lsize * 512;
+ }
+#endif
+ close(fd);
+ if (ret < 0) {
+ fprintf(stderr, "%s: size ioctl failed: %s\n",
+ progname, strerror(errno));
+ return 0;
+ }
+
+ vprint("device size = "LPU64"MB\n", size >> 20);
+ /* return value in KB */
+ return size >> 10;
+}
+
+int file_create(char *path, __u64 size)
+{
+ __u64 size_max;
+ int ret;
+ int fd;
+
+ /*
+ * Since "size" is in KB, the file offset it represents could overflow
+ * off_t.
+ */
+ size_max = (off_t)1 << (_FILE_OFFSET_BITS - 1 - 10);
+ if (size >= size_max) {
+ fprintf(stderr, "%s: "LPU64" KB: Backing store size must be "
+ "smaller than "LPU64" KB\n", progname, size, size_max);
+ return EFBIG;
+ }
+
+ ret = access(path, F_OK);
+ if (ret == 0) {
+ ret = unlink(path);
+ if (ret != 0)
+ return errno;
+ }
+
+ fd = creat(path, S_IRUSR|S_IWUSR);
+ if (fd < 0) {
+ fatal();
+ fprintf(stderr, "%s: Unable to create backing store: %s\n",
+ progname, strerror(errno));
+ return errno;
+ }
+
+ ret = ftruncate(fd, size * 1024);
+ close(fd);
+ if (ret != 0) {
+ fatal();
+ fprintf(stderr, "%s: Unable to truncate backing store: %s\n",
+ progname, strerror(errno));
+ return errno;
+ }
+
+ return 0;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff