[PATCH 7/9] exofs: mkexofs

Boaz Harrosh
2008-12-16T15:34:14Z

We need a mechanism to prepare the file system (mkfs).
I chose to implement that by means of a couple of
mount-options. Because there is no user-mode API for committing
OSD commands. And also, all this stuff is highly internal to
the file system itself.

- Added two mount options mkfs=0/1,format=capacity_in_meg, so mkfs/format
can be executed by kernel code just before mount. An mkexofs utility
can now be implemented by means of a script that mounts and unmount the
file system with proper options.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
---
fs/exofs/Kbuild | 2 +-
fs/exofs/exofs.h | 3 +
fs/exofs/mkexofs.c | 605 ++++++++++++++++++++++++++++++++++++++++++++++++++++
fs/exofs/super.c | 18 ++
4 files changed, 627 insertions(+), 1 deletions(-)
create mode 100644 fs/exofs/mkexofs.c

diff --git a/fs/exofs/Kbuild b/fs/exofs/Kbuild
index e293cb9..639c181 100644
--- a/fs/exofs/Kbuild
+++ b/fs/exofs/Kbuild
@@ -26,5 +26,5 @@ KBUILD_CPPFLAGS := -I$(OSD_INC) $(KBUILD_CPPFLAGS)

endif

-exofs-objs := osd.o inode.o file.o symlink.o namei.o dir.o super.o
+exofs-objs := osd.o inode.o file.o symlink.o namei.o dir.o super.o mkexofs.o
obj-$(CONFIG_EXOFS_FS) += exofs.o
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index 75c608d..f53d18b 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -204,6 +204,9 @@ int extract_list_from_req(struct osd_request *req,

void free_osd_req(struct osd_request *req);

+/* mkexofs.c */
+int exofs_mkfs(struct osd_dev *dev, uint64_t p_id, uint64_t format_size);
+
/* inode.c */
void exofs_truncate(struct inode *inode);
extern struct inode *exofs_iget(struct super_block *, unsigned long);
diff --git a/fs/exofs/mkexofs.c b/fs/exofs/mkexofs.c
new file mode 100644
index 0000000..79df3e3
--- /dev/null
+++ b/fs/exofs/mkexofs.c
@@ -0,0 +1,605 @@
+/*
+ * mkexofs.c - make an exofs file system.
+ *
+ * Copyright (C) 2005, 2006
+ * Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com)
+ * Copyright (C) 2005, 2006
+ * International Business Machines
+ *
+ * Copyrights from mke2fs.c:
+ * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+ * 2003, 2004, 2005 by Theodore Ts'o.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "exofs.h"
+#include <linux/random.h>
+
+/* #define __MKEXOFS_DEBUG_CHECKS 1 */
+
+static int kick_it(struct osd_request *req, int timeout, uint8_t *cred_a,
+ const char *op)
+{
+ return exofs_sync_op(req, timeout, cred_a);
+}
+
+/* Format the LUN to the specified size */
+static int format(uint64_t lun_capacity, struct osd_dev *dev, int timeout)
+{
+ struct osd_request *req = prepare_osd_format_lun(dev, lun_capacity);
+ uint8_t cred_a[OSD_CAP_LEN];
+ int ret;
+
+ make_credential(cred_a, 0, 0);
+
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ ret = kick_it(req, timeout, cred_a, "format");
+
+ free_osd_req(req);
+
+ return ret;
+}
+
+static int create_partition(struct osd_dev *dev, uint64_t p_id, int timeout)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ bool try_remove = false;
+ int ret;
+
+ make_credential(cred_a, p_id, 0);
+
+create_part:
+ req = prepare_osd_create_partition(dev, p_id);
+ if (!req)
+ return -ENOMEM;
+ ret = kick_it(req, timeout, cred_a, "create partition");
+ free_osd_req(req);
+
+ if (ret && !try_remove) {
+ try_remove = true;
+ req = prepare_osd_remove_partition(dev, p_id);
+ if (!req)
+ return -ENOMEM;
+ ret = kick_it(req, timeout, cred_a, "remove partition");
+ free_osd_req(req);
+ if (!ret) /* Try again now */
+ goto create_part;
+ }
+
+ return ret;
+}
+
+#ifdef __MKEXOFS_DEBUG_CHECKS
+static int list(struct osd_dev *dev, uint64_t p_id, int timeout)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ unsigned char *buf = NULL;
+ int ret;
+ uint64_t total_matches;
+ uint64_t total_ret;
+ uint64_t *id_list;
+ int is_part, is_utd;
+ uint64_t cont;
+ uint32_t more;
+ int i;
+
+ buf = kzalloc(1024, GFP_KERNEL);
+ if (!buf) {
+ EXOFS_ERR("ERROR: Failed to allocate memory.\n");
+ return -ENOMEM;
+ }
+
+ make_credential(cred_a, p_id, 0);
+
+ req = prepare_osd_list(dev, p_id, 0, 1024, 0, 0, buf);
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ ret = kick_it(req, timeout, cred_a, "list");
+ if (ret != 0)
+ goto out;
+
+ ret = extract_list_from_req(req, &total_matches, &total_ret, &id_list,
+ &is_part, &is_utd, &cont, &more);
+
+ EXOFS_DBGMSG("created %llu objects:\n", _LLU(total_ret));
+ for (i = 0 ; i < total_ret ; i++)
+ EXOFS_DBGMSG("%llu\n", _LLU(id_list[i]));
+
+out:
+ free_osd_req(req);
+ kfree(buf);
+
+ return ret;
+}
+#endif
+
+static int create(struct osd_dev *dev, uint64_t p_id, uint64_t o_id,
+ int timeout)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ int ret;
+
+ make_credential(cred_a, p_id, o_id);
+ req = prepare_osd_create(dev, p_id, o_id);
+
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ ret = kick_it(req, timeout, cred_a, "create");
+
+ free_osd_req(req);
+
+ return ret;
+}
+
+static int write_super(struct osd_dev *dev, uint64_t p_id, int timeout,
+ int newfile)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ struct exofs_fscb data;
+ int ret;
+
+ make_credential(cred_a, p_id, EXOFS_SUPER_ID);
+
+ data.s_nextid = 4;
+ data.s_magic = EXOFS_SUPER_MAGIC;
+ data.s_newfs = 1;
+ if (newfile)
+ data.s_numfiles = 1;
+ else
+ data.s_numfiles = 0;
+
+ req = prepare_osd_write(dev, p_id, EXOFS_SUPER_ID,
+ sizeof(struct exofs_fscb), 0, 0,
+ (unsigned char *)(&data));
+
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ ret = kick_it(req, timeout, cred_a, "write super");
+
+ free_osd_req(req);
+
+ return ret;
+}
+
+#ifdef __MKEXOFS_DEBUG_CHECKS
+static int read_super(struct osd_dev *dev, uint64_t p_id, int timeout)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ struct exofs_fscb data;
+ int ret;
+
+ make_credential(cred_a, p_id, EXOFS_SUPER_ID);
+
+ req = prepare_osd_read(dev, p_id, EXOFS_SUPER_ID,
+ sizeof(struct exofs_fscb), 0, 0,
+ (unsigned char *)(&data));
+
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ ret = kick_it(req, timeout, cred_a, "read super");
+ if (ret)
+ goto out;
+
+ EXOFS_DBGMSG("nextid:\t%u\n", data.s_nextid);
+ EXOFS_DBGMSG("magic:\t%u\n", data.s_magic);
+ EXOFS_DBGMSG("numfiles:\t%u\n", data.s_numfiles);
+out:
+ free_osd_req(req);
+
+ return ret;
+}
+#endif
+
+static int write_bitmap(struct osd_dev *dev, uint64_t p_id, int timeout)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ uint64_t off = 0;
+ unsigned int id = 3;
+ int ret;
+
+ /* XXX: For now just use counter - later make bitmap */
+ make_credential(cred_a, p_id, EXOFS_BM_ID);
+
+ req = prepare_osd_write(dev, p_id, EXOFS_BM_ID, sizeof(unsigned int),
+ off, 0, (unsigned char *)&id);
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ ret = kick_it(req, timeout, cred_a, "write bitmap");
+
+ free_osd_req(req);
+
+ return ret;
+}
+
+#ifdef __MKEXOFS_DEBUG_CHECKS
+static int write_testfile(struct osd_dev *dev, uint64_t p_id, int timeout)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ uint64_t off = 0;
+ unsigned char buf[64];
+ int ret;
+
+ strcpy((char *)buf, "This file is a test, it is only a test.");
+ make_credential(cred_a, p_id, EXOFS_TEST_ID);
+
+ req = prepare_osd_write(dev, p_id, EXOFS_TEST_ID, 64, off, 0, buf);
+
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ ret = kick_it(req, timeout, cred_a, "write bitmap");
+
+ free_osd_req(req);
+
+ return ret;
+}
+
+static int read_testfile(struct osd_dev *dev, uint64_t p_id, int timeout)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ unsigned char data[64];
+ int ret;
+
+ make_credential(cred_a, p_id, EXOFS_TEST_ID);
+
+ req = prepare_osd_read(dev, p_id, EXOFS_TEST_ID, 64, 0, 0, data);
+
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ ret = kick_it(req, timeout, cred_a, "read test file");
+ if (ret)
+ goto out;
+
+ EXOFS_DBGMSG("test file: %s\n", data);
+
+out:
+ free_osd_req(req);
+
+ return ret;
+}
+#endif
+
+static int write_rootdir(struct osd_dev *dev, uint64_t p_id, int timeout,
+ int newfile)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ struct exofs_dir_entry *dir;
+ uint64_t off = 0;
+ unsigned char *buf = NULL;
+ int filetype = EXOFS_FT_DIR << 8;
+ int filetype2 = EXOFS_FT_REG_FILE << 8;
+ int rec_len;
+ int done;
+ int ret;
+
+ buf = kzalloc(EXOFS_BLKSIZE, GFP_KERNEL);
+ if (!buf) {
+ EXOFS_ERR("ERROR: Failed to allocate memory.\n");
+ return -ENOMEM;
+ }
+ dir = (struct exofs_dir_entry *)buf;
+
+ /* create entry for '.' */
+ dir->name[0] = '.';
+ dir->name_len = 1 | filetype;
+ dir->inode = EXOFS_ROOT_ID - EXOFS_OBJ_OFF;
+ dir->rec_len = EXOFS_DIR_REC_LEN(1);
+ rec_len = EXOFS_BLKSIZE - EXOFS_DIR_REC_LEN(1);
+
+ /* create entry for '..' */
+ dir = (struct exofs_dir_entry *) (buf + dir->rec_len);
+ dir->name[0] = '.';
+ dir->name[1] = '.';
+ dir->name_len = 2 | filetype;
+ dir->inode = EXOFS_ROOT_ID - EXOFS_OBJ_OFF;
+ if (newfile) {
+ rec_len -= EXOFS_DIR_REC_LEN(2);
+ dir->rec_len = EXOFS_DIR_REC_LEN(2);
+ } else
+ dir->rec_len = rec_len;
+ done = EXOFS_DIR_REC_LEN(1) + dir->rec_len;
+
+ /* create entry for 'test', if specified */
+ if (newfile) {
+ dir = (struct exofs_dir_entry *) (buf + done);
+ dir->inode = EXOFS_TEST_ID - EXOFS_OBJ_OFF;
+ dir->name_len = 4 | filetype2;
+ dir->name[0] = 't';
+ dir->name[1] = 'e';
+ dir->name[2] = 's';
+ dir->name[3] = 't';
+ dir->rec_len = rec_len;
+ }
+
+ make_credential(cred_a, p_id, EXOFS_ROOT_ID);
+
+ req = prepare_osd_write(dev, p_id, EXOFS_ROOT_ID, EXOFS_BLKSIZE, off,
+ 0, buf);
+
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ ret = kick_it(req, timeout, cred_a, "write rootdir");
+
+ free_osd_req(req);
+
+ return ret;
+}
+
+static int set_inode(struct osd_dev *dev, uint64_t p_id, int timeout,
+ uint64_t o_id, uint16_t mode)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ struct exofs_fcb in = {0};
+ struct exofs_fcb *inode = &in;
+ uint32_t i_generation;
+ int ret;
+
+ inode->i_mode = cpu_to_be16(mode);
+ inode->i_uid = inode->i_gid = 0;
+ inode->i_links_count = cpu_to_be16(2);
+ inode->i_ctime = inode->i_atime = inode->i_mtime =
+ cpu_to_be32(CURRENT_TIME.tv_sec);
+ inode->i_size = cpu_to_be64(EXOFS_BLKSIZE);
+ if (o_id != EXOFS_ROOT_ID)
+ inode->i_size = cpu_to_be64(64);
+
+ get_random_bytes(&i_generation, sizeof(i_generation));
+ inode->i_generation = cpu_to_be32(i_generation);
+
+ make_credential(cred_a, p_id, o_id);
+
+ req = prepare_osd_set_attr(dev, p_id, o_id);
+
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ prepare_set_attr_list_add_entry(req,
+ OSD_PAGE_NUM_IBM_UOBJ_FS_DATA,
+ OSD_ATTR_NUM_IBM_UOBJ_FS_DATA_INODE,
+ EXOFS_INO_ATTR_SIZE,
+ (unsigned char *)inode);
+
+ ret = kick_it(req, timeout, cred_a, "set inode");
+
+ free_osd_req(req);
+
+ return ret;
+}
+
+#ifdef __MKEXOFS_DEBUG_CHECKS
+static int get_root_attr(struct osd_dev *dev, uint64_t p_id, int timeout)
+{
+ struct osd_request *req;
+ uint8_t cred_a[OSD_CAP_LEN];
+ struct exofs_fcb in = {0};
+ struct exofs_fcb *inode = &in;
+ uint32_t page = OSD_PAGE_NUM_IBM_UOBJ_FS_DATA;
+ uint32_t attr = OSD_ATTR_NUM_IBM_UOBJ_FS_DATA_INODE;
+ uint16_t expected = EXOFS_INO_ATTR_SIZE;
+ uint8_t *buf;
+ int ret;
+
+ make_credential(cred_a, p_id, EXOFS_ROOT_ID);
+
+ req = prepare_osd_get_attr(dev, p_id, EXOFS_ROOT_ID);
+ if (req == NULL) {
+ EXOFS_ERR("ERROR: Failed to allocate request.\n");
+ return -ENOMEM;
+ }
+
+ prepare_get_attr_list_add_entry(req,
+ OSD_PAGE_NUM_IBM_UOBJ_FS_DATA,
+ OSD_ATTR_NUM_IBM_UOBJ_FS_DATA_INODE,
+ EXOFS_INO_ATTR_SIZE);
+
+ ret = kick_it(req, timeout, cred_a, "get root inode");
+ if (ret)
+ goto out;
+
+ ret = extract_next_attr_from_req(req, &page, &attr, &expected, &buf);
+ if (ret) {
+ EXOFS_ERR("ERROR: extract attr from req failed\n");
+ goto out;
+ }
+
+ memcpy(inode, buf, sizeof(struct exofs_fcb));
+
+ EXOFS_DBGMSG("mode: %u\n", be16_to_cpu(inode->i_mode));
+ EXOFS_DBGMSG("uid: %u\n", be32_to_cpu(inode->i_uid));
+ EXOFS_DBGMSG("gid: %u\n", be32_to_cpu(inode->i_gid));
+ EXOFS_DBGMSG("links: %u\n", be16_to_cpu(inode->i_links_count));
+ EXOFS_DBGMSG("ctime: %u\n", be32_to_cpu(inode->i_ctime));
+ EXOFS_DBGMSG("atime: %u\n", be32_to_cpu(inode->i_atime));
+ EXOFS_DBGMSG("mtime: %u\n", be32_to_cpu(inode->i_mtime));
+ EXOFS_DBGMSG("gen: %u\n", be32_to_cpu(inode->i_generation));
+ EXOFS_DBGMSG("size: %llu\n", _LLU(be64_to_cpu(inode->i_size)));
+
+out:
+ free_osd_req(req);
+
+ return ret;
+}
+#endif
+
+/*
+ * This function creates an exofs file system on the specified OSD partition.
+ */
+int exofs_mkfs(struct osd_dev *dev, uint64_t p_id, uint64_t format_size_meg)
+{
+ int err;
+ const int to_format = (4 * 60 * HZ);
+ const int to_gen = (60 * HZ);
+ bool newfile = false;
+
+ /* Get a handle */
+ EXOFS_DBGMSG("setting up exofs on partition %llu:\n", _LLU(p_id));
+
+ /* Format LUN if requested */
+ if (format_size_meg > 0) {
+ EXOFS_DBGMSG("formatting %llu Mgb...\n", _LLU(format_size_meg));
+ err = format(format_size_meg * 1024 * 1024, dev, to_format);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+ }
+
+ /* Create partition */
+ EXOFS_DBGMSG("creating partition...\n");
+ err = create_partition(dev, p_id, to_gen);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+
+ /* Create object with known ID for superblock info */
+ EXOFS_DBGMSG("creating superblock...\n");
+ err = create(dev, p_id, EXOFS_SUPER_ID, to_gen);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+
+ /* Create root directory object */
+ EXOFS_DBGMSG("creating root directory...\n");
+ err = create(dev, p_id, EXOFS_ROOT_ID, to_gen);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+
+ /* Create bitmap object */
+ EXOFS_DBGMSG("creating free ID bitmap...\n");
+ err = create(dev, p_id, EXOFS_BM_ID, to_gen);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+
+#ifdef __MKEXOFS_DEBUG_CHECKS
+ /* Create a test file, if specified by options */
+ if (newfile) {
+ EXOFS_DBGMSG("creating test file...\n");
+ err = create(dev, p_id, EXOFS_TEST_ID, to_gen);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+ }
+#endif
+
+ /* Write superblock */
+ EXOFS_DBGMSG("writing superblock...\n");
+ err = write_super(dev, p_id, to_gen, newfile);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+
+ /* Write root directory */
+ EXOFS_DBGMSG("writing root directory...\n");
+ err = write_rootdir(dev, p_id, to_gen, newfile);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+
+ /* Set root partition inode attribute */
+ EXOFS_DBGMSG("writing root inode...\n");
+ err = set_inode(dev, p_id, to_gen, EXOFS_ROOT_ID,
+ 0040000 | (0777 & ~022));
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+
+#ifdef __MKEXOFS_DEBUG_CHECKS
+ /* Set test file inode attribute */
+ if (newfile) {
+ EXOFS_DBGMSG("writing test inode...\n");
+ err = set_inode(dev, p_id, to_gen, EXOFS_TEST_ID,
+ 0100000 | (0777 & ~022));
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+ }
+#endif
+ /* Write bitmap */
+ EXOFS_DBGMSG("writing free ID bitmap...\n");
+ err = write_bitmap(dev, p_id, to_gen);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+
+#ifdef __MKEXOFS_DEBUG_CHECKS
+ /* Write test file */
+ if (newfile) {
+ EXOFS_DBGMSG("writing test file...\n");
+ err = write_testfile(dev, p_id, to_gen);
+ if (err)
+ goto out;
+ EXOFS_DBGMSG(" OK\n");
+ }
+
+ /* some debug info */
+ {
+ EXOFS_DBGMSG("listing:\n");
+ list(dev, p_id, to_gen);
+ EXOFS_DBGMSG("contents of superblock:\n");
+ read_super(dev, p_id, to_gen);
+ EXOFS_DBGMSG("contents of root inode:\n");
+ get_root_attr(dev, p_id, to_gen);
+ if (newfile) {
+ EXOFS_DBGMSG("contents of test file:\n");
+ read_testfile(dev, p_id, to_gen);
+ }
+ }
+#endif
+ EXOFS_DBGMSG("\nsetup complete: enjoy your shiny new exofs!\n");
+
+out:
+ return err;
+}
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index 8ecf700..459b935 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -55,6 +55,8 @@ enum { Opt_lun, Opt_tid, Opt_pid, Opt_to, Opt_mkfs, Opt_format, Opt_err };
static match_table_t tokens = {
{Opt_pid, "pid=%u"},
{Opt_to, "to=%u"},
+ {Opt_mkfs, "mkfs=%u"},
+ {Opt_format, "format=%u"},
{Opt_err, NULL}
};

@@ -100,6 +102,16 @@ static int parse_options(char *options, struct exofs_mountopt *opts)
}
opts->timeout = option * HZ;
break;
+ case Opt_mkfs:
+ if (match_int(&args[0], &option))
+ return -EINVAL;
+ opts->mkfs = option != 0;
+ break;
+ case Opt_format:
+ if (match_int(&args[0], &option))
+ return -EINVAL;
+ opts->format = option;
+ break;
}
}

@@ -277,6 +289,12 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_bdev = NULL;
sb->s_dev = 0;

+ /* see if we need to make the file system on the obsd */
+ if (opts->mkfs) {
+ EXOFS_DBGMSG("exofs_mkfs %p\n", sbi->s_dev);
+ exofs_mkfs(sbi->s_dev, sbi->s_pid, opts->format);
+ }
+
/* read data from on-disk superblock object */
make_credential(sbi->s_cred, sbi->s_pid, EXOFS_SUPER_ID);

--
1.6.0.1