return 0;
}
+static grub_err_t ventoy_cmd_read_1st_line(grub_extcmd_context_t ctxt, int argc, char **args)
+{
+ int len = 1024;
+ grub_file_t file;
+ char *buf = NULL;
+
+ (void)ctxt;
+ (void)argc;
+
+ if (argc != 2)
+ {
+ return grub_error(GRUB_ERR_BAD_ARGUMENT, "Usage: %s file var \n", cmd_raw_name);
+ }
+
+ file = ventoy_grub_file_open(VENTOY_FILE_TYPE, "%s", args[0]);
+ if (!file)
+ {
+ debug("failed to open file %s\n", args[0]);
+ return 0;
+ }
+
+ buf = grub_malloc(len);
+ if (!buf)
+ {
+ goto end;
+ }
+
+ buf[len - 1] = 0;
+ grub_file_read(file, buf, len - 1);
+
+ ventoy_get_line(buf);
+ ventoy_set_env(args[1], buf);
+
+end:
+
+ grub_check_free(buf);
+ grub_file_close(file);
+
+ return 0;
+}
+
static grub_err_t ventoy_cmd_parse_volume(grub_extcmd_context_t ctxt, int argc, char **args)
{
int len;
return 0;
}
+static grub_err_t ventoy_cmd_parse_create_date(grub_extcmd_context_t ctxt, int argc, char **args)
+{
+ int len;
+ grub_file_t file;
+ char buf[64];
+
+ (void)ctxt;
+ (void)argc;
+
+ if (argc != 2)
+ {
+ return grub_error(GRUB_ERR_BAD_ARGUMENT, "Usage: %s var \n", cmd_raw_name);
+ }
+
+ file = ventoy_grub_file_open(VENTOY_FILE_TYPE, "%s", args[0]);
+ if (!file)
+ {
+ debug("failed to open file %s\n", args[0]);
+ return 0;
+ }
+
+ grub_memset(buf, 0, sizeof(buf));
+ grub_file_seek(file, 16 * 2048 + 813);
+ len = (int)grub_file_read(file, buf, 17);
+ if (len != 17)
+ {
+ debug("failed to read create date %d\n", len);
+ goto end;
+ }
+
+ ventoy_set_env(args[1], buf);
+
+end:
+ grub_file_close(file);
+
+ return 0;
+}
+
grub_uint64_t ventoy_grub_get_file_size(const char *fmt, ...)
{
grub_uint64_t size = 0;
{ "vt_load_plugin", ventoy_cmd_load_plugin, 0, NULL, "", "", NULL },
{ "vt_check_plugin_json", ventoy_cmd_plugin_check_json, 0, NULL, "", "", NULL },
+ { "vt_1st_line", ventoy_cmd_read_1st_line, 0, NULL, "", "", NULL },
{ "vt_parse_iso_volume", ventoy_cmd_parse_volume, 0, NULL, "", "", NULL },
+ { "vt_parse_iso_create_date", ventoy_cmd_parse_create_date, 0, NULL, "", "", NULL },
+ { "vt_parse_freenas_ver", ventoy_cmd_parse_freenas_ver, 0, NULL, "", "", NULL },
{ "vt_unix_parse_freebsd_ver", ventoy_cmd_unix_freebsd_ver, 0, NULL, "", "", NULL },
{ "vt_unix_reset", ventoy_cmd_unix_reset, 0, NULL, "", "", NULL },
{ "vt_unix_replace_conf", ventoy_cmd_unix_replace_conf, 0, NULL, "", "", NULL },
grub_err_t ventoy_cmd_unix_replace_conf(grub_extcmd_context_t ctxt, int argc, char **args);
grub_err_t ventoy_cmd_unix_replace_ko(grub_extcmd_context_t ctxt, int argc, char **args);
grub_err_t ventoy_cmd_unix_freebsd_ver(grub_extcmd_context_t ctxt, int argc, char **args);
+grub_err_t ventoy_cmd_parse_freenas_ver(grub_extcmd_context_t ctxt, int argc, char **args);
#endif /* __VENTOY_DEF_H__ */
net_modules_uefi="efinet net tftp http"
all_modules_uefi="blocklist ventoy test search at_keyboard usb_keyboard gcry_md5 hashsum gzio xzio lzopio ext2 xfs read halt sleep serial terminfo png password_pbkdf2 gcry_sha512 pbkdf2 part_gpt part_msdos ls tar squash4 loopback part_apple minicmd diskfilter linux relocator jpeg iso9660 udf hfsplus halt acpi mmap gfxmenu video_colors trig bitmap_scale gfxterm bitmap font fat exfat ntfs fshelp efifwsetup reboot echo configfile normal terminal gettext chain priority_queue bufio datetime cat extcmd crypto gzio boot all_video efi_gop efi_uga video_bochs video_cirrus video video_fb gfxterm_background gfxterm_menu"
-all_extra_modules="elf macho offsetio regexp file"
-
if [ "$1" = "uefi" ]; then
- all_modules="$net_modules_uefi $all_modules_uefi $all_extra_modules "
+ all_modules="$net_modules_uefi $all_modules_uefi "
grub-mkimage -v --directory "$VT_DIR/GRUB2/INSTALL/lib/grub/x86_64-efi" --prefix '(,2)/grub' --output "$VT_DIR/INSTALL/EFI/BOOT/grubx64_real.efi" --format 'x86_64-efi' --compression 'auto' $all_modules_uefi 'fat' 'part_msdos'
else
all_modules="$net_modules_legacy $all_modules_legacy "
$SED "s#.*livefs_root=.*find_livefs.*#$BUSYBOX_PATH/mount -t iso9660 /dev/mapper/ventoy \$mountpoint; livefs_root=\$mountpoint#" -i /usr/lib/live/boot/9990-main.sh
$SED "s#.*livefs_root=.*find_livefs.*#$BUSYBOX_PATH/mount -t iso9660 /dev/mapper/ventoy \$mountpoint; livefs_root=\$mountpoint#" -i /usr/bin/boot/9990-main.sh
-ventoy_systemd_udevd_work_around
-ventoy_add_udev_rule "$VTOY_PATH/hook/debian/udev_disk_hook.sh %k"
+if [ -e /init ] && $GREP -q '^mountroot$' /init; then
+ echo "Here before mountroot ..." >> $VTLOG
+ $SED "/^mountroot$/i\\$BUSYBOX_PATH/sh $VTOY_PATH/hook/debian/disk_mount_hook.sh" -i /init
+else
+ echo "Use default hook ..." >> $VTLOG
+ ventoy_systemd_udevd_work_around
+ ventoy_add_udev_rule "$VTOY_PATH/hook/debian/udev_disk_hook.sh %k"
+fi
if [ "$vtoy_os" = "Linux" ]; then
if vt_strstr "$vt_system_id" "FreeBSD"; then
set vtoy_os=Unix
+ set vt_unix_type=FreeBSD
elif [ -e (loop)/bin/freebsd-version ]; then
set vtoy_os=Unix
+ set vt_unix_type=FreeBSD
+
+
+ elif [ -e (loop)/boot/kernel/kernel ]; then
+ if file --is-x86-kfreebsd (loop)/boot/kernel/kernel; then
+ set vtoy_os=Unix
+ set vt_unix_type=FreeBSD
+ elif file --is-x86-knetbsd (loop)/boot/kernel/kernel; then
+ set vtoy_os=Unix
+ set vt_unix_type=NetBSD
+ fi
fi
fi
fi
}
+function ventoy_get_ghostbsd_ver {
+
+ # vt_parse_iso_create_date $1/${chosen_path} vt_create_date
+ # if regexp "^202005" "$vt_create_date"; then
+ # set vt_freebsd_ver=12.x
+ # fi
+
+ set vt_freebsd_ver=12.x
+}
+
+function ventoy_get_freenas_ver {
+ set vt_freebsd_ver=11.x
+
+ if [ -e (loop)/FreeNAS-MANIFEST ]; then
+ vt_parse_freenas_ver (loop)/FreeNAS-MANIFEST vt_freenas_ver
+ if regexp "^13\.[0-9]" "$vt_freenas_ver"; then
+ set vt_freebsd_ver=13.x
+ elif regexp "^12\.[0-9]" "$vt_freenas_ver"; then
+ set vt_freebsd_ver=12.x
+ elif regexp "^11\.[0-9]" "$vt_freenas_ver"; then
+ set vt_freebsd_ver=11.x
+ fi
+ fi
+}
+
function ventoy_freebsd_proc {
- if regexp "^12_[0-9]" $vt_volume_id; then
+ if vt_strstr "$vt_volume_id" "GHOSTBSD"; then
+ ventoy_get_ghostbsd_ver $1 ${chosen_path}
+ elif vt_strstr "$vt_volume_id" "FREENAS"; then
+ ventoy_get_freenas_ver $1 ${chosen_path}
+ elif regexp "^13_[0-9]" "$vt_volume_id"; then
+ set vt_freebsd_ver=13.x
+ elif regexp "^12_[0-9]" "$vt_volume_id"; then
set vt_freebsd_ver=12.x
- elif regexp "^11_[0-9]" $vt_volume_id; then
+ elif regexp "^11_[0-9]" "$vt_volume_id"; then
set vt_freebsd_ver=11.x
- elif regexp "^10_[0-9]" $vt_volume_id; then
+ elif regexp "^10_[0-9]" "$vt_volume_id"; then
set vt_freebsd_ver=10.x
+ elif regexp "^9_[0-9]" "$vt_volume_id"; then
+ set vt_freebsd_ver=9.x
elif [ -e (loop)/bin/freebsd-version ]; then
vt_unix_parse_freebsd_ver (loop)/bin/freebsd-version vt_userland_ver
- if regexp "\"12\.[0-9]-" $vt_userland_ver; then
+ if regexp "\"13\.[0-9]-" "$vt_userland_ver"; then
+ set vt_freebsd_ver=13.x
+ elif regexp "\"12\.[0-9]-" "$vt_userland_ver"; then
set vt_freebsd_ver=12.x
- elif regexp "\"11\.[0-9]-" $vt_userland_ver; then
+ elif regexp "\"11\.[0-9]-" "$vt_userland_ver"; then
set vt_freebsd_ver=11.x
- elif regexp "\"10\.[0-9]-" $vt_userland_ver; then
+ elif regexp "\"10\.[0-9]-" "$vt_userland_ver"; then
set vt_freebsd_ver=10.x
+ elif regexp "\"9\.[0-9]-" "$vt_userland_ver"; then
+ set vt_freebsd_ver=9.x
fi
+ elif [ -e (loop)/README.TXT ]; then
+ vt_1st_line (loop)/README.TXT vt_freebsd_line1
+ if regexp "FreeBSD 13\.[0-9]-" "$vt_freebsd_line1"; then
+ set vt_freebsd_ver=13.x
+ elif regexp "FreeBSD 12\.[0-9]-" "$vt_freebsd_line1"; then
+ set vt_freebsd_ver=12.x
+ elif regexp "FreeBSD 11\.[0-9]-" "$vt_freebsd_line1"; then
+ set vt_freebsd_ver=11.x
+ elif regexp "FreeBSD 10\.[0-9]-" "$vt_freebsd_line1"; then
+ set vt_freebsd_ver=10.x
+ elif regexp "FreeBSD 9\.[0-9]-" "$vt_freebsd_line1"; then
+ set vt_freebsd_ver=9.x
+ fi
+ elif vt_strstr "${chosen_path}" "MidnightBSD"; then
+ set vt_freebsd_ver=9.x
else
set vt_freebsd_ver=12.x
fi
-
- if file --is-i386-kfreebsd (loop)/boot/kernel/kernel; then
- set vt_freebsd_bit=32
- else
- set vt_freebsd_bit=64
- fi
+
+ set vt_freebsd_bit=64
+ for file in "/boot/kernel/kernel" "/boot/kernel/kernel.gz"; do
+ if [ -e (loop)/$file ]; then
+ if file --is-i386-kfreebsd (loop)/$file; then
+ set vt_freebsd_bit=32
+ fi
+ break
+ fi
+ done
if [ -n "${vtdebug_flag}" ]; then
echo "This is FreeBSD $vt_freebsd_ver ${vt_freebsd_bit}bit"
fi
- for file in "geom_nop" "ipmi"; do
- if [ -e (loop)/boot/kernel/${file}.ko ]; then
- set vt_unix_ko=$file
+ unset vt_unix_mod_path
+ for file in "/COPYRIGHT" "/FreeNAS-MANIFEST" "/version"; do
+ if [ -e (loop)${file} ]; then
+ set vt_unix_mod_path=${file}
break
fi
done
- vt_unix_replace_ko $vt_unix_ko (vtunix)/ventoy_unix/FreeBSD/geom_ventoy_ko/$vt_freebsd_ver/$vt_freebsd_bit/geom_ventoy.ko.xz
+ vt_unix_replace_ko $vt_unix_mod_path (vtunix)/ventoy_unix/FreeBSD/geom_ventoy_ko/$vt_freebsd_ver/$vt_freebsd_bit/geom_ventoy.ko.xz
vt_unix_replace_conf FreeBSD ${1}${chosen_path}
}
if [ "$ventoy_compatible" = "NO" ]; then
loopback vtunix $vtoy_efi_part/ventoy/ventoy_unix.cpio
- set vt_unix_type=unknown
- if vt_strstr "$vt_system_id" "FreeBSD"; then
- ventoy_freebsd_proc $1 ${chosen_path}
- elif [ -e (loop)/bin/freebsd-version ]; then
- ventoy_freebsd_proc $1 ${chosen_path}
+ if [ "$vt_unix_type" = "FreeBSD" ]; then
+ ventoy_freebsd_proc $1 ${chosen_path}
+ elif [ "$vt_unix_type" = "NetBSD" ]; then
+ echo "NetBSD not supported"
+
+
+
else
if [ -n "${vtdebug_flag}" ]; then
echo "Unknown unix type"
#############################################################
#############################################################
-set VENTOY_VERSION="1.0.17"
+set VENTOY_VERSION="1.0.18"
# Default menu display mode, you can change it as you want.
# 0: List mode
crypto:
part_bsd: part_msdos
cs5536:
-ventoy: ext2 fshelp font crypto exfat udf extcmd normal gcry_sha1 iso9660
+ventoy: ext2 fshelp crypto font exfat udf extcmd normal gcry_sha1 iso9660
gcry_sha512: crypto
password: crypto normal
fshelp:
+++ /dev/null
-same with 11.x
\ No newline at end of file
--- /dev/null
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 longpanda <admin@ventoy.net>
+ * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/bio.h>
+#include <sys/sbuf.h>
+#include <sys/sysctl.h>
+#include <sys/malloc.h>
+#include <geom/geom.h>
+#include <geom/ventoy/g_ventoy.h>
+
+FEATURE(geom_ventoy, "GEOM ventoy support");
+
+static MALLOC_DEFINE(M_VENTOY, "ventoy_data", "GEOM_VENTOY Data");
+
+SYSCTL_DECL(_kern_geom);
+static SYSCTL_NODE(_kern_geom, OID_AUTO, ventoy, CTLFLAG_RW, 0,
+ "GEOM_VENTOY stuff");
+static u_int g_ventoy_debug = 0;
+SYSCTL_UINT(_kern_geom_ventoy, OID_AUTO, debug, CTLFLAG_RWTUN, &g_ventoy_debug, 0,
+ "Debug level");
+
+extern int resource_string_value(const char *name, int unit, const char *resname, const char **result);
+extern int resource_int_value(const char *name, int unit, const char *resname, int *result);
+
+static int g_ventoy_destroy(struct g_ventoy_softc *sc, boolean_t force);
+static int g_ventoy_destroy_geom(struct gctl_req *req, struct g_class *mp,
+ struct g_geom *gp);
+
+static g_taste_t g_ventoy_taste;
+static g_ctl_req_t g_ventoy_config;
+static g_dumpconf_t g_ventoy_dumpconf;
+
+static const char *g_ventoy_disk_uuid = NULL;
+static bool g_ventoy_tasted = false;
+static off_t g_ventoy_disk_size = 0;
+static off_t g_disk_map_start = 0;
+static off_t g_disk_map_end = 0;
+
+struct g_class g_ventoy_class = {
+ .name = G_VENTOY_CLASS_NAME,
+ .version = G_VERSION,
+ .ctlreq = g_ventoy_config,
+ .taste = g_ventoy_taste,
+ .destroy_geom = g_ventoy_destroy_geom
+};
+
+
+/*
+ * Greatest Common Divisor.
+ */
+static u_int
+gcd(u_int a, u_int b)
+{
+ u_int c;
+
+ while (b != 0) {
+ c = a;
+ a = b;
+ b = (c % b);
+ }
+ return (a);
+}
+
+/*
+ * Least Common Multiple.
+ */
+static u_int
+lcm(u_int a, u_int b)
+{
+
+ return ((a * b) / gcd(a, b));
+}
+
+/*
+ * Return the number of valid disks.
+ */
+static u_int
+g_ventoy_nvalid(struct g_ventoy_softc *sc)
+{
+ u_int i, no;
+
+ no = 0;
+ for (i = 0; i < sc->sc_ndisks; i++) {
+ if (sc->sc_disks[i].d_consumer != NULL)
+ no++;
+ }
+
+ return (no);
+}
+
+static void
+g_ventoy_remove_disk(struct g_ventoy_disk *disk)
+{
+ struct g_consumer *cp;
+ struct g_ventoy_softc *sc;
+
+ g_topology_assert();
+ KASSERT(disk->d_consumer != NULL, ("Non-valid disk in %s.", __func__));
+ sc = disk->d_softc;
+ cp = disk->d_consumer;
+
+ if (!disk->d_removed) {
+ G_VENTOY_DEBUG(0, "Disk %s removed from %s.",
+ cp->provider->name, sc->sc_name);
+ disk->d_removed = 1;
+ }
+
+ if (sc->sc_provider != NULL) {
+ sc->sc_provider->flags |= G_PF_WITHER;
+ G_VENTOY_DEBUG(0, "Device %s deactivated.",
+ sc->sc_provider->name);
+ g_orphan_provider(sc->sc_provider, ENXIO);
+ sc->sc_provider = NULL;
+ }
+
+ if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
+ return;
+ disk->d_consumer = NULL;
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ /* If there are no valid disks anymore, remove device. */
+ if (LIST_EMPTY(&sc->sc_geom->consumer))
+ g_ventoy_destroy(sc, 1);
+}
+
+static void
+g_ventoy_orphan(struct g_consumer *cp)
+{
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ struct g_geom *gp;
+
+ g_topology_assert();
+ gp = cp->geom;
+ sc = gp->softc;
+ if (sc == NULL)
+ return;
+
+ disk = cp->private;
+ if (disk == NULL) /* Possible? */
+ return;
+ g_ventoy_remove_disk(disk);
+}
+
+static int
+g_ventoy_access(struct g_provider *pp, int dr, int dw, int de)
+{
+ struct g_consumer *cp1, *cp2, *tmp;
+ struct g_ventoy_disk *disk;
+ struct g_geom *gp;
+ int error;
+
+ if (dw > 0) /* readonly */
+ return (EPERM);
+
+ g_topology_assert();
+ gp = pp->geom;
+
+ /* On first open, grab an extra "exclusive" bit */
+ if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0)
+ de++;
+ /* ... and let go of it on last close */
+ if ((pp->acr + dr) == 0 && (pp->acw + dw) == 0 && (pp->ace + de) == 0)
+ de--;
+
+ LIST_FOREACH_SAFE(cp1, &gp->consumer, consumer, tmp) {
+ error = g_access(cp1, dr, dw, de);
+ if (error != 0)
+ goto fail;
+ disk = cp1->private;
+ if (cp1->acr == 0 && cp1->acw == 0 && cp1->ace == 0 &&
+ disk->d_removed) {
+ g_ventoy_remove_disk(disk); /* May destroy geom. */
+ }
+ }
+ return (0);
+
+fail:
+ LIST_FOREACH(cp2, &gp->consumer, consumer) {
+ if (cp1 == cp2)
+ break;
+ g_access(cp2, -dr, -dw, -de);
+ }
+ return (error);
+}
+
+static void
+g_ventoy_kernel_dump(struct bio *bp)
+{
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ struct bio *cbp;
+ struct g_kerneldump *gkd;
+ u_int i;
+
+ sc = bp->bio_to->geom->softc;
+ gkd = (struct g_kerneldump *)bp->bio_data;
+ for (i = 0; i < sc->sc_ndisks; i++) {
+ if (sc->sc_disks[i].d_start <= gkd->offset &&
+ sc->sc_disks[i].d_end > gkd->offset)
+ break;
+ }
+ if (i == sc->sc_ndisks)
+ g_io_deliver(bp, EOPNOTSUPP);
+ disk = &sc->sc_disks[i];
+ gkd->offset -= disk->d_start;
+ if (gkd->length > disk->d_end - disk->d_start - gkd->offset)
+ gkd->length = disk->d_end - disk->d_start - gkd->offset;
+ cbp = g_clone_bio(bp);
+ if (cbp == NULL) {
+ g_io_deliver(bp, ENOMEM);
+ return;
+ }
+ cbp->bio_done = g_std_done;
+ g_io_request(cbp, disk->d_consumer);
+ G_VENTOY_DEBUG(1, "Kernel dump will go to %s.",
+ disk->d_consumer->provider->name);
+}
+
+static void
+g_ventoy_flush(struct g_ventoy_softc *sc, struct bio *bp)
+{
+ struct bio_queue_head queue;
+ struct g_consumer *cp;
+ struct bio *cbp;
+ u_int no;
+
+ bioq_init(&queue);
+ for (no = 0; no < sc->sc_ndisks; no++) {
+ cbp = g_clone_bio(bp);
+ if (cbp == NULL) {
+ for (cbp = bioq_first(&queue); cbp != NULL;
+ cbp = bioq_first(&queue)) {
+ bioq_remove(&queue, cbp);
+ g_destroy_bio(cbp);
+ }
+ if (bp->bio_error == 0)
+ bp->bio_error = ENOMEM;
+ g_io_deliver(bp, bp->bio_error);
+ return;
+ }
+ bioq_insert_tail(&queue, cbp);
+ cbp->bio_done = g_std_done;
+ cbp->bio_caller1 = sc->sc_disks[no].d_consumer;
+ cbp->bio_to = sc->sc_disks[no].d_consumer->provider;
+ }
+ for (cbp = bioq_first(&queue); cbp != NULL; cbp = bioq_first(&queue)) {
+ bioq_remove(&queue, cbp);
+ G_VENTOY_LOGREQ(cbp, "Sending request.");
+ cp = cbp->bio_caller1;
+ cbp->bio_caller1 = NULL;
+ g_io_request(cbp, cp);
+ }
+}
+
+static void
+g_ventoy_start(struct bio *bp)
+{
+ struct bio_queue_head queue;
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ struct g_provider *pp;
+ off_t offset, end, length, off, len;
+ struct bio *cbp;
+ char *addr;
+ u_int no;
+
+ pp = bp->bio_to;
+ sc = pp->geom->softc;
+ /*
+ * If sc == NULL, provider's error should be set and g_ventoy_start()
+ * should not be called at all.
+ */
+ KASSERT(sc != NULL,
+ ("Provider's error should be set (error=%d)(device=%s).",
+ bp->bio_to->error, bp->bio_to->name));
+
+ G_VENTOY_LOGREQ(bp, "Request received.");
+
+ switch (bp->bio_cmd) {
+ case BIO_READ:
+ case BIO_WRITE:
+ case BIO_DELETE:
+ break;
+ case BIO_FLUSH:
+ g_ventoy_flush(sc, bp);
+ return;
+ case BIO_GETATTR:
+ if (strcmp("GEOM::kerneldump", bp->bio_attribute) == 0) {
+ g_ventoy_kernel_dump(bp);
+ return;
+ }
+ /* To which provider it should be delivered? */
+ /* FALLTHROUGH */
+ default:
+ g_io_deliver(bp, EOPNOTSUPP);
+ return;
+ }
+
+ offset = bp->bio_offset;
+ length = bp->bio_length;
+ addr = bp->bio_data;
+ end = offset + length;
+
+ bioq_init(&queue);
+ for (no = 0; no < sc->sc_ndisks; no++) {
+ disk = &sc->sc_disks[no];
+ if (disk->d_end <= offset)
+ continue;
+ if (disk->d_start >= end)
+ break;
+
+ off = offset - disk->d_start;
+ len = MIN(length, disk->d_end - offset);
+ length -= len;
+ offset += len;
+
+ cbp = g_clone_bio(bp);
+ if (cbp == NULL) {
+ for (cbp = bioq_first(&queue); cbp != NULL;
+ cbp = bioq_first(&queue)) {
+ bioq_remove(&queue, cbp);
+ g_destroy_bio(cbp);
+ }
+ if (bp->bio_error == 0)
+ bp->bio_error = ENOMEM;
+ g_io_deliver(bp, bp->bio_error);
+ return;
+ }
+ bioq_insert_tail(&queue, cbp);
+ /*
+ * Fill in the component buf structure.
+ */
+ cbp->bio_done = g_std_done;
+ cbp->bio_offset = off + disk->d_map_start;
+ cbp->bio_data = addr;
+ addr += len;
+ cbp->bio_length = len;
+ cbp->bio_to = disk->d_consumer->provider;
+ cbp->bio_caller1 = disk;
+
+ if (length == 0)
+ break;
+ }
+ KASSERT(length == 0,
+ ("Length is still greater than 0 (class=%s, name=%s).",
+ bp->bio_to->geom->class->name, bp->bio_to->geom->name));
+ for (cbp = bioq_first(&queue); cbp != NULL; cbp = bioq_first(&queue)) {
+ bioq_remove(&queue, cbp);
+ G_VENTOY_LOGREQ(cbp, "Sending request.");
+ disk = cbp->bio_caller1;
+ cbp->bio_caller1 = NULL;
+ g_io_request(cbp, disk->d_consumer);
+ }
+}
+
+static void
+g_ventoy_check_and_run(struct g_ventoy_softc *sc)
+{
+ struct g_ventoy_disk *disk;
+ struct g_provider *dp, *pp;
+ u_int no, sectorsize = 0;
+ off_t start;
+
+ g_topology_assert();
+ if (g_ventoy_nvalid(sc) != sc->sc_ndisks)
+ return;
+
+ pp = g_new_providerf(sc->sc_geom, "ventoy/%s", sc->sc_name);
+ start = 0;
+ for (no = 0; no < sc->sc_ndisks; no++) {
+ disk = &sc->sc_disks[no];
+ dp = disk->d_consumer->provider;
+ disk->d_start = start;
+ disk->d_end = disk->d_start + (disk->d_map_end - disk->d_map_start);
+ if (sc->sc_type == G_VENTOY_TYPE_AUTOMATIC)
+ disk->d_end -= dp->sectorsize;
+ start = disk->d_end;
+ if (no == 0)
+ sectorsize = dp->sectorsize;
+ else {
+ sectorsize = lcm(sectorsize, dp->sectorsize);
+
+ }
+ }
+ pp->sectorsize = sectorsize;
+ /* We have sc->sc_disks[sc->sc_ndisks - 1].d_end in 'start'. */
+ pp->mediasize = start;
+ pp->stripesize = sc->sc_disks[0].d_consumer->provider->stripesize;
+ pp->stripeoffset = sc->sc_disks[0].d_consumer->provider->stripeoffset;
+ sc->sc_provider = pp;
+ g_error_provider(pp, 0);
+
+ G_VENTOY_DEBUG(0, "Device %s activated.", sc->sc_provider->name);
+}
+
+static int
+g_ventoy_read_metadata(struct g_consumer *cp, struct g_ventoy_metadata *md)
+{
+ struct g_provider *pp;
+ u_char *buf;
+ int error;
+
+ g_topology_assert();
+
+ error = g_access(cp, 1, 0, 0);
+ if (error != 0)
+ return (error);
+ pp = cp->provider;
+ g_topology_unlock();
+ buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize,
+ &error);
+ g_topology_lock();
+ g_access(cp, -1, 0, 0);
+ if (buf == NULL)
+ return (error);
+
+ /* Decode metadata. */
+ ventoy_metadata_decode(buf, md);
+ g_free(buf);
+
+ return (0);
+}
+
+/*
+ * Add disk to given device.
+ */
+static int
+g_ventoy_add_disk(struct g_ventoy_softc *sc, struct g_provider *pp, u_int no)
+{
+ struct g_ventoy_disk *disk;
+ struct g_consumer *cp, *fcp;
+ struct g_geom *gp;
+ int error;
+
+ g_topology_assert();
+ /* Metadata corrupted? */
+ if (no >= sc->sc_ndisks)
+ return (EINVAL);
+
+ disk = &sc->sc_disks[no];
+ /* Check if disk is not already attached. */
+ if (disk->d_consumer != NULL)
+ return (EEXIST);
+
+ gp = sc->sc_geom;
+ fcp = LIST_FIRST(&gp->consumer);
+
+ cp = g_new_consumer(gp);
+ error = g_attach(cp, pp);
+ if (error != 0) {
+ g_destroy_consumer(cp);
+ return (error);
+ }
+
+ if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0)) {
+ error = g_access(cp, fcp->acr, fcp->acw, fcp->ace);
+ if (error != 0) {
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ return (error);
+ }
+ }
+ if (sc->sc_type == G_VENTOY_TYPE_AUTOMATIC) {
+ struct g_ventoy_metadata md;
+
+ /* Re-read metadata. */
+ error = g_ventoy_read_metadata(cp, &md);
+ if (error != 0)
+ goto fail;
+
+ if (strcmp(md.md_magic, G_VENTOY_MAGIC) != 0 ||
+ strcmp(md.md_name, sc->sc_name) != 0 ||
+ md.md_id != sc->sc_id) {
+ G_VENTOY_DEBUG(0, "Metadata on %s changed.", pp->name);
+ goto fail;
+ }
+ }
+
+ cp->private = disk;
+ disk->d_consumer = cp;
+ disk->d_softc = sc;
+ disk->d_start = 0; /* not yet */
+ disk->d_end = 0; /* not yet */
+ disk->d_removed = 0;
+
+ disk->d_map_start = g_disk_map_start;
+ disk->d_map_end = g_disk_map_end;
+
+ G_VENTOY_DEBUG(0, "Disk %s attached to %s.", pp->name, sc->sc_name);
+
+ g_ventoy_check_and_run(sc);
+
+ return (0);
+fail:
+ if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0))
+ g_access(cp, -fcp->acr, -fcp->acw, -fcp->ace);
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ return (error);
+}
+
+static struct g_geom *
+g_ventoy_create(struct g_class *mp, const struct g_ventoy_metadata *md,
+ u_int type)
+{
+ struct g_ventoy_softc *sc;
+ struct g_geom *gp;
+ u_int no;
+
+ G_VENTOY_DEBUG(1, "Creating device %s (id=%u).", md->md_name,
+ md->md_id);
+
+ /* One disks is minimum. */
+ if (md->md_all < 1)
+ return (NULL);
+
+ /* Check for duplicate unit */
+ LIST_FOREACH(gp, &mp->geom, geom) {
+ sc = gp->softc;
+ if (sc != NULL && strcmp(sc->sc_name, md->md_name) == 0) {
+ G_VENTOY_DEBUG(0, "Device %s already configured.",
+ gp->name);
+ return (NULL);
+ }
+ }
+ gp = g_new_geomf(mp, "%s", md->md_name);
+ sc = malloc(sizeof(*sc), M_VENTOY, M_WAITOK | M_ZERO);
+ gp->start = g_ventoy_start;
+ gp->spoiled = g_ventoy_orphan;
+ gp->orphan = g_ventoy_orphan;
+ gp->access = g_ventoy_access;
+ gp->dumpconf = g_ventoy_dumpconf;
+
+ sc->sc_id = md->md_id;
+ sc->sc_ndisks = md->md_all;
+ sc->sc_disks = malloc(sizeof(struct g_ventoy_disk) * sc->sc_ndisks,
+ M_VENTOY, M_WAITOK | M_ZERO);
+ for (no = 0; no < sc->sc_ndisks; no++)
+ sc->sc_disks[no].d_consumer = NULL;
+ sc->sc_type = type;
+
+ gp->softc = sc;
+ sc->sc_geom = gp;
+ sc->sc_provider = NULL;
+
+ G_VENTOY_DEBUG(0, "Device %s created (id=%u).", sc->sc_name, sc->sc_id);
+
+ return (gp);
+}
+
+static int
+g_ventoy_destroy(struct g_ventoy_softc *sc, boolean_t force)
+{
+ struct g_provider *pp;
+ struct g_consumer *cp, *cp1;
+ struct g_geom *gp;
+
+ g_topology_assert();
+
+ if (sc == NULL)
+ return (ENXIO);
+
+ pp = sc->sc_provider;
+ if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) {
+ if (force) {
+ G_VENTOY_DEBUG(0, "Device %s is still open, so it "
+ "can't be definitely removed.", pp->name);
+ } else {
+ G_VENTOY_DEBUG(1,
+ "Device %s is still open (r%dw%de%d).", pp->name,
+ pp->acr, pp->acw, pp->ace);
+ return (EBUSY);
+ }
+ }
+
+ gp = sc->sc_geom;
+ LIST_FOREACH_SAFE(cp, &gp->consumer, consumer, cp1) {
+ g_ventoy_remove_disk(cp->private);
+ if (cp1 == NULL)
+ return (0); /* Recursion happened. */
+ }
+ if (!LIST_EMPTY(&gp->consumer))
+ return (EINPROGRESS);
+
+ gp->softc = NULL;
+ KASSERT(sc->sc_provider == NULL, ("Provider still exists? (device=%s)",
+ gp->name));
+ free(sc->sc_disks, M_VENTOY);
+ free(sc, M_VENTOY);
+
+ G_VENTOY_DEBUG(0, "Device %s destroyed.", gp->name);
+ g_wither_geom(gp, ENXIO);
+ return (0);
+}
+
+static int
+g_ventoy_destroy_geom(struct gctl_req *req __unused,
+ struct g_class *mp __unused, struct g_geom *gp)
+{
+ struct g_ventoy_softc *sc;
+
+ sc = gp->softc;
+ return (g_ventoy_destroy(sc, 0));
+}
+
+static bool g_vtoy_check_disk(struct g_class *mp, struct g_provider *pp)
+{
+ int i;
+ uint8_t *buf;
+ char uuid[64];
+ const char *value;
+ struct g_consumer *cp;
+ struct g_geom *gp;
+
+ if (g_ventoy_disk_size == 0)
+ {
+ if (resource_string_value("ventoy", 0, "disksize", &value) == 0)
+ {
+ G_DEBUG("ventoy.disksize: %s\n", value);
+ g_ventoy_disk_size = strtouq(value, NULL, 0);
+ }
+
+ if (resource_string_value("ventoy", 0, "diskuuid", &g_ventoy_disk_uuid) == 0)
+ {
+ G_DEBUG("ventoy.diskuuid: <%s>\n", g_ventoy_disk_uuid);
+ }
+ }
+
+ if (g_ventoy_disk_size != pp->mediasize)
+ {
+ return false;
+ }
+
+ if (strncmp(pp->name, "cd", 2) == 0 || strchr(pp->name, '/'))
+ {
+ return false;
+ }
+
+ /* read UUID from disk */
+ gp = g_new_geomf(mp, "ventoy:taste");
+ gp->start = NULL;
+ gp->access = g_ventoy_access;
+ gp->orphan = g_ventoy_orphan;
+ cp = g_new_consumer(gp);
+ g_attach(cp, pp);
+
+ g_access(cp, 1, 0, 0);
+ g_topology_unlock();
+ buf = g_read_data(cp, 0, pp->sectorsize, NULL);
+ g_topology_lock();
+ g_access(cp, -1, 0, 0);
+
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ g_destroy_geom(gp);
+ gp = NULL;
+
+ if (!buf)
+ {
+ return false;
+ }
+
+ for (i = 0; i < 16; i++)
+ {
+ sprintf(uuid + i * 2, "%02x", buf[0x180 + i]);
+ }
+ g_free(buf);
+
+ if (strncmp(g_ventoy_disk_uuid, uuid, 32) == 0)
+ {
+ return true;
+ }
+
+ return false;
+}
+
+static struct g_geom *
+g_ventoy_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
+{
+ int i;
+ int error;
+ int disknum;
+ char *endpos;
+ const char *value;
+ struct g_geom *gp;
+ struct g_ventoy_metadata md;
+ struct g_ventoy_softc *sc;
+
+ if (g_ventoy_tasted)
+ {
+ return NULL;
+ }
+
+ G_DEBUG("%s(%s, %s)\n", __func__, mp->name, pp->name);
+ g_topology_assert();
+
+ /* Skip providers that are already open for writing. */
+ if (pp->acw > 0)
+ return (NULL);
+
+ if (!g_vtoy_check_disk(mp, pp))
+ {
+ return NULL;
+ }
+
+ g_ventoy_tasted = true;
+
+ G_DEBUG("######### ventoy disk <%s> #############\n", pp->name);
+
+ resource_int_value("ventoy", 0, "segnum", &disknum);
+
+ strlcpy(md.md_magic, G_VENTOY_MAGIC, sizeof(md.md_magic));
+ md.md_version = G_VENTOY_VERSION;
+ strlcpy(md.md_name, "IMAGE", sizeof(md.md_name));
+ md.md_id = arc4random();
+ md.md_no = 0;
+ md.md_all = (uint16_t)disknum;
+ bzero(md.md_provider, sizeof(md.md_provider));
+ /* This field is not important here. */
+ md.md_provsize = 0;
+
+ gp = g_ventoy_create(mp, &md, G_VENTOY_TYPE_MANUAL);
+ if (gp == NULL) {
+ G_VENTOY_DEBUG(0, "Cannot create device %s.",
+ md.md_name);
+ return (NULL);
+ }
+ sc = gp->softc;
+
+ for (i = 0; i < disknum; i ++)
+ {
+ if (resource_string_value("ventoy", i, "seg", &value) == 0)
+ {
+ g_disk_map_start = strtouq(value, &endpos, 0);
+ g_disk_map_end = strtouq(endpos + 1, NULL, 0);
+ }
+ else
+ {
+ printf("Failed to parse ventoy seg %d\n", i);
+ continue;
+ }
+
+ G_DEBUG("ventoy segment%d: %s\n", i, value);
+
+ G_VENTOY_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name);
+ error = g_ventoy_add_disk(sc, pp, i);
+ if (error != 0) {
+ G_VENTOY_DEBUG(0,
+ "Cannot add disk %s to %s (error=%d).", pp->name,
+ gp->name, error);
+ g_ventoy_destroy(sc, 1);
+ return (NULL);
+ }
+
+ g_disk_map_start = 0;
+ g_disk_map_end = 0;
+ }
+
+ return (gp);
+}
+
+static void
+g_ventoy_ctl_create(struct gctl_req *req, struct g_class *mp)
+{
+ u_int attached, no;
+ struct g_ventoy_metadata md;
+ struct g_provider *pp;
+ struct g_ventoy_softc *sc;
+ struct g_geom *gp;
+ struct sbuf *sb;
+ const char *name;
+ char param[16];
+ int *nargs;
+
+ g_topology_assert();
+ nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
+ if (nargs == NULL) {
+ gctl_error(req, "No '%s' argument.", "nargs");
+ return;
+ }
+ if (*nargs < 2) {
+ gctl_error(req, "Too few arguments.");
+ return;
+ }
+
+ strlcpy(md.md_magic, G_VENTOY_MAGIC, sizeof(md.md_magic));
+ md.md_version = G_VENTOY_VERSION;
+ name = gctl_get_asciiparam(req, "arg0");
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%u' argument.", 0);
+ return;
+ }
+ strlcpy(md.md_name, name, sizeof(md.md_name));
+ md.md_id = arc4random();
+ md.md_no = 0;
+ md.md_all = *nargs - 1;
+ bzero(md.md_provider, sizeof(md.md_provider));
+ /* This field is not important here. */
+ md.md_provsize = 0;
+
+ /* Check all providers are valid */
+ for (no = 1; no < *nargs; no++) {
+ snprintf(param, sizeof(param), "arg%u", no);
+ name = gctl_get_asciiparam(req, param);
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%u' argument.", no);
+ return;
+ }
+ if (strncmp(name, "/dev/", strlen("/dev/")) == 0)
+ name += strlen("/dev/");
+ pp = g_provider_by_name(name);
+ if (pp == NULL) {
+ G_VENTOY_DEBUG(1, "Disk %s is invalid.", name);
+ gctl_error(req, "Disk %s is invalid.", name);
+ return;
+ }
+ }
+
+ gp = g_ventoy_create(mp, &md, G_VENTOY_TYPE_MANUAL);
+ if (gp == NULL) {
+ gctl_error(req, "Can't configure %s.", md.md_name);
+ return;
+ }
+
+ sc = gp->softc;
+ sb = sbuf_new_auto();
+ sbuf_printf(sb, "Can't attach disk(s) to %s:", gp->name);
+ for (attached = 0, no = 1; no < *nargs; no++) {
+ snprintf(param, sizeof(param), "arg%u", no);
+ name = gctl_get_asciiparam(req, param);
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%d' argument.", no);
+ return;
+ }
+ if (strncmp(name, "/dev/", strlen("/dev/")) == 0)
+ name += strlen("/dev/");
+ pp = g_provider_by_name(name);
+ KASSERT(pp != NULL, ("Provider %s disappear?!", name));
+ if (g_ventoy_add_disk(sc, pp, no - 1) != 0) {
+ G_VENTOY_DEBUG(1, "Disk %u (%s) not attached to %s.",
+ no, pp->name, gp->name);
+ sbuf_printf(sb, " %s", pp->name);
+ continue;
+ }
+ attached++;
+ }
+ sbuf_finish(sb);
+ if (md.md_all != attached) {
+ g_ventoy_destroy(gp->softc, 1);
+ gctl_error(req, "%s", sbuf_data(sb));
+ }
+ sbuf_delete(sb);
+}
+
+static struct g_ventoy_softc *
+g_ventoy_find_device(struct g_class *mp, const char *name)
+{
+ struct g_ventoy_softc *sc;
+ struct g_geom *gp;
+
+ LIST_FOREACH(gp, &mp->geom, geom) {
+ sc = gp->softc;
+ if (sc == NULL)
+ continue;
+ if (strcmp(sc->sc_name, name) == 0)
+ return (sc);
+ }
+ return (NULL);
+}
+
+static void
+g_ventoy_ctl_destroy(struct gctl_req *req, struct g_class *mp)
+{
+ struct g_ventoy_softc *sc;
+ int *force, *nargs, error;
+ const char *name;
+ char param[16];
+ u_int i;
+
+ g_topology_assert();
+
+ nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
+ if (nargs == NULL) {
+ gctl_error(req, "No '%s' argument.", "nargs");
+ return;
+ }
+ if (*nargs <= 0) {
+ gctl_error(req, "Missing device(s).");
+ return;
+ }
+ force = gctl_get_paraml(req, "force", sizeof(*force));
+ if (force == NULL) {
+ gctl_error(req, "No '%s' argument.", "force");
+ return;
+ }
+
+ for (i = 0; i < (u_int)*nargs; i++) {
+ snprintf(param, sizeof(param), "arg%u", i);
+ name = gctl_get_asciiparam(req, param);
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%u' argument.", i);
+ return;
+ }
+ sc = g_ventoy_find_device(mp, name);
+ if (sc == NULL) {
+ gctl_error(req, "No such device: %s.", name);
+ return;
+ }
+ error = g_ventoy_destroy(sc, *force);
+ if (error != 0) {
+ gctl_error(req, "Cannot destroy device %s (error=%d).",
+ sc->sc_name, error);
+ return;
+ }
+ }
+}
+
+static void
+g_ventoy_config(struct gctl_req *req, struct g_class *mp, const char *verb)
+{
+ uint32_t *version;
+
+ return;
+
+ g_topology_assert();
+
+ version = gctl_get_paraml(req, "version", sizeof(*version));
+ if (version == NULL) {
+ gctl_error(req, "No '%s' argument.", "version");
+ return;
+ }
+ if (*version != G_VENTOY_VERSION) {
+ gctl_error(req, "Userland and kernel parts are out of sync.");
+ return;
+ }
+
+ if (strcmp(verb, "create") == 0) {
+ g_ventoy_ctl_create(req, mp);
+ return;
+ } else if (strcmp(verb, "destroy") == 0 ||
+ strcmp(verb, "stop") == 0) {
+ g_ventoy_ctl_destroy(req, mp);
+ return;
+ }
+ gctl_error(req, "Unknown verb.");
+}
+
+static void
+g_ventoy_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
+ struct g_consumer *cp, struct g_provider *pp)
+{
+ struct g_ventoy_softc *sc;
+
+ g_topology_assert();
+ sc = gp->softc;
+ if (sc == NULL)
+ return;
+ if (pp != NULL) {
+ /* Nothing here. */
+ } else if (cp != NULL) {
+ struct g_ventoy_disk *disk;
+
+ disk = cp->private;
+ if (disk == NULL)
+ return;
+ sbuf_printf(sb, "%s<End>%jd</End>\n", indent,
+ (intmax_t)disk->d_end);
+ sbuf_printf(sb, "%s<Start>%jd</Start>\n", indent,
+ (intmax_t)disk->d_start);
+ } else {
+ sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id);
+ sbuf_printf(sb, "%s<Type>", indent);
+ switch (sc->sc_type) {
+ case G_VENTOY_TYPE_AUTOMATIC:
+ sbuf_cat(sb, "AUTOMATIC");
+ break;
+ case G_VENTOY_TYPE_MANUAL:
+ sbuf_cat(sb, "MANUAL");
+ break;
+ default:
+ sbuf_cat(sb, "UNKNOWN");
+ break;
+ }
+ sbuf_cat(sb, "</Type>\n");
+ sbuf_printf(sb, "%s<Status>Total=%u, Online=%u</Status>\n",
+ indent, sc->sc_ndisks, g_ventoy_nvalid(sc));
+ sbuf_printf(sb, "%s<State>", indent);
+ if (sc->sc_provider != NULL && sc->sc_provider->error == 0)
+ sbuf_cat(sb, "UP");
+ else
+ sbuf_cat(sb, "DOWN");
+ sbuf_cat(sb, "</State>\n");
+ }
+}
+
+DECLARE_GEOM_CLASS(g_ventoy_class, g_ventoy);
--- /dev/null
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 longpanda <admin@ventoy.net>
+ * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _G_VENTOY_H_
+#define _G_VENTOY_H_
+
+#include <sys/endian.h>
+
+#define G_VENTOY_CLASS_NAME "VENTOY"
+
+#define G_VENTOY_MAGIC "GEOM::VENTOY"
+/*
+ * Version history:
+ * 1 - Initial version number.
+ * 2 - Added 'stop' command to gconcat(8).
+ * 3 - Added md_provider field to metadata and '-h' option to gconcat(8).
+ * 4 - Added md_provsize field to metadata.
+ */
+#define G_VENTOY_VERSION 4
+
+#ifdef _KERNEL
+#define G_VENTOY_TYPE_MANUAL 0
+#define G_VENTOY_TYPE_AUTOMATIC 1
+
+#define G_DEBUG(...) if (bootverbose) printf(__VA_ARGS__)
+#define G_VENTOY_DEBUG(lvl, ...) if (g_ventoy_debug) printf(__VA_ARGS__)
+#define G_VENTOY_LOGREQ(bp, ...) if (g_ventoy_debug) printf(__VA_ARGS__)
+
+struct g_ventoy_disk {
+ struct g_consumer *d_consumer;
+ struct g_ventoy_softc *d_softc;
+ off_t d_start;
+ off_t d_end;
+ off_t d_map_start;
+ off_t d_map_end;
+ int d_candelete;
+ int d_removed;
+};
+
+struct g_ventoy_softc {
+ u_int sc_type; /* provider type */
+ struct g_geom *sc_geom;
+ struct g_provider *sc_provider;
+ uint32_t sc_id; /* concat unique ID */
+
+ struct g_ventoy_disk *sc_disks;
+ uint16_t sc_ndisks;
+ struct mtx sc_lock;
+};
+#define sc_name sc_geom->name
+#endif /* _KERNEL */
+
+struct g_ventoy_metadata {
+ char md_magic[16]; /* Magic value. */
+ uint32_t md_version; /* Version number. */
+ char md_name[16]; /* Concat name. */
+ uint32_t md_id; /* Unique ID. */
+ uint16_t md_no; /* Disk number. */
+ uint16_t md_all; /* Number of all disks. */
+ char md_provider[16]; /* Hardcoded provider. */
+ uint64_t md_provsize; /* Provider's size. */
+};
+static __inline void
+ventoy_metadata_encode(const struct g_ventoy_metadata *md, u_char *data)
+{
+
+ bcopy(md->md_magic, data, sizeof(md->md_magic));
+ le32enc(data + 16, md->md_version);
+ bcopy(md->md_name, data + 20, sizeof(md->md_name));
+ le32enc(data + 36, md->md_id);
+ le16enc(data + 40, md->md_no);
+ le16enc(data + 42, md->md_all);
+ bcopy(md->md_provider, data + 44, sizeof(md->md_provider));
+ le64enc(data + 60, md->md_provsize);
+}
+static __inline void
+ventoy_metadata_decode(const u_char *data, struct g_ventoy_metadata *md)
+{
+
+ bcopy(data, md->md_magic, sizeof(md->md_magic));
+ md->md_version = le32dec(data + 16);
+ bcopy(data + 20, md->md_name, sizeof(md->md_name));
+ md->md_id = le32dec(data + 36);
+ md->md_no = le16dec(data + 40);
+ md->md_all = le16dec(data + 42);
+ bcopy(data + 44, md->md_provider, sizeof(md->md_provider));
+ md->md_provsize = le64dec(data + 60);
+}
+#endif /* _G_VENTOY_H_ */
--- /dev/null
+# $FreeBSD$
+
+.PATH: ${SRCTOP}/sys/geom/ventoy
+
+KMOD= geom_ventoy
+SRCS= g_ventoy.c
+
+.include <bsd.kmod.mk>
* SUCH DAMAGE.
*/
-
-/*
- * This file is just copied from g_concat.h and replace strings
- * "concat" ==> "ventoy"
- * "CONCAT" ==> "VENTOY"
- */
-
-
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
* $FreeBSD$
*/
-/*
- * This file is just copied from g_concat.h and replace strings
- * "concat" ==> "ventoy"
- * "CONCAT" ==> "VENTOY"
- */
-
#ifndef _G_VENTOY_H_
#define _G_VENTOY_H_
* SUCH DAMAGE.
*/
-
-/*
- * This file is just copied from g_concat.h and replace strings
- * "concat" ==> "ventoy"
- * "CONCAT" ==> "VENTOY"
- */
-
-
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
* $FreeBSD$
*/
-/*
- * This file is just copied from g_concat.h and replace strings
- * "concat" ==> "ventoy"
- * "CONCAT" ==> "VENTOY"
- */
-
#ifndef _G_VENTOY_H_
#define _G_VENTOY_H_
--- /dev/null
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 longpanda <admin@ventoy.net>
+ * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/bio.h>
+#include <sys/sbuf.h>
+#include <sys/sysctl.h>
+#include <sys/malloc.h>
+#include <geom/geom.h>
+#include <geom/ventoy/g_ventoy.h>
+
+FEATURE(geom_ventoy, "GEOM ventoy support");
+
+static MALLOC_DEFINE(M_VENTOY, "ventoy_data", "GEOM_VENTOY Data");
+
+SYSCTL_DECL(_kern_geom);
+static SYSCTL_NODE(_kern_geom, OID_AUTO, ventoy, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
+ "GEOM_VENTOY stuff");
+static u_int g_ventoy_debug = 0;
+SYSCTL_UINT(_kern_geom_ventoy, OID_AUTO, debug, CTLFLAG_RWTUN, &g_ventoy_debug, 0,
+ "Debug level");
+
+extern int resource_string_value(const char *name, int unit, const char *resname, const char **result);
+extern int resource_int_value(const char *name, int unit, const char *resname, int *result);
+
+static int g_ventoy_destroy(struct g_ventoy_softc *sc, boolean_t force);
+static int g_ventoy_destroy_geom(struct gctl_req *req, struct g_class *mp,
+ struct g_geom *gp);
+
+static g_taste_t g_ventoy_taste;
+static g_ctl_req_t g_ventoy_config;
+static g_dumpconf_t g_ventoy_dumpconf;
+
+static const char *g_ventoy_disk_uuid = NULL;
+static bool g_ventoy_tasted = false;
+static off_t g_ventoy_disk_size = 0;
+static off_t g_disk_map_start = 0;
+static off_t g_disk_map_end = 0;
+
+struct g_class g_ventoy_class = {
+ .name = G_VENTOY_CLASS_NAME,
+ .version = G_VERSION,
+ .ctlreq = g_ventoy_config,
+ .taste = g_ventoy_taste,
+ .destroy_geom = g_ventoy_destroy_geom
+};
+
+
+/*
+ * Greatest Common Divisor.
+ */
+static u_int
+gcd(u_int a, u_int b)
+{
+ u_int c;
+
+ while (b != 0) {
+ c = a;
+ a = b;
+ b = (c % b);
+ }
+ return (a);
+}
+
+/*
+ * Least Common Multiple.
+ */
+static u_int
+lcm(u_int a, u_int b)
+{
+
+ return ((a * b) / gcd(a, b));
+}
+
+/*
+ * Return the number of valid disks.
+ */
+static u_int
+g_ventoy_nvalid(struct g_ventoy_softc *sc)
+{
+ u_int i, no;
+
+ no = 0;
+ for (i = 0; i < sc->sc_ndisks; i++) {
+ if (sc->sc_disks[i].d_consumer != NULL)
+ no++;
+ }
+
+ return (no);
+}
+
+static void
+g_ventoy_remove_disk(struct g_ventoy_disk *disk)
+{
+ struct g_consumer *cp;
+ struct g_ventoy_softc *sc;
+
+ g_topology_assert();
+ KASSERT(disk->d_consumer != NULL, ("Non-valid disk in %s.", __func__));
+ sc = disk->d_softc;
+ cp = disk->d_consumer;
+
+ if (!disk->d_removed) {
+ G_VENTOY_DEBUG(0, "Disk %s removed from %s.",
+ cp->provider->name, sc->sc_name);
+ disk->d_removed = 1;
+ }
+
+ if (sc->sc_provider != NULL) {
+ G_VENTOY_DEBUG(0, "Device %s deactivated.",
+ sc->sc_provider->name);
+ g_wither_provider(sc->sc_provider, ENXIO);
+ sc->sc_provider = NULL;
+ }
+
+ if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
+ return;
+ disk->d_consumer = NULL;
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ /* If there are no valid disks anymore, remove device. */
+ if (LIST_EMPTY(&sc->sc_geom->consumer))
+ g_ventoy_destroy(sc, 1);
+}
+
+static void
+g_ventoy_orphan(struct g_consumer *cp)
+{
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ struct g_geom *gp;
+
+ g_topology_assert();
+ gp = cp->geom;
+ sc = gp->softc;
+ if (sc == NULL)
+ return;
+
+ disk = cp->private;
+ if (disk == NULL) /* Possible? */
+ return;
+ g_ventoy_remove_disk(disk);
+}
+
+static int
+g_ventoy_access(struct g_provider *pp, int dr, int dw, int de)
+{
+ struct g_consumer *cp1, *cp2, *tmp;
+ struct g_ventoy_disk *disk;
+ struct g_geom *gp;
+ int error;
+
+ if (dw > 0) /* readonly */
+ return (EPERM);
+
+ g_topology_assert();
+ gp = pp->geom;
+
+ /* On first open, grab an extra "exclusive" bit */
+ if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0)
+ de++;
+ /* ... and let go of it on last close */
+ if ((pp->acr + dr) == 0 && (pp->acw + dw) == 0 && (pp->ace + de) == 0)
+ de--;
+
+ LIST_FOREACH_SAFE(cp1, &gp->consumer, consumer, tmp) {
+ error = g_access(cp1, dr, dw, de);
+ if (error != 0)
+ goto fail;
+ disk = cp1->private;
+ if (cp1->acr == 0 && cp1->acw == 0 && cp1->ace == 0 &&
+ disk->d_removed) {
+ g_ventoy_remove_disk(disk); /* May destroy geom. */
+ }
+ }
+ return (0);
+
+fail:
+ LIST_FOREACH(cp2, &gp->consumer, consumer) {
+ if (cp1 == cp2)
+ break;
+ g_access(cp2, -dr, -dw, -de);
+ }
+ return (error);
+}
+
+static void
+g_ventoy_candelete(struct bio *bp)
+{
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ int i, val;
+
+ sc = bp->bio_to->geom->softc;
+ for (i = 0; i < sc->sc_ndisks; i++) {
+ disk = &sc->sc_disks[i];
+ if (!disk->d_removed && disk->d_candelete)
+ break;
+ }
+ val = i < sc->sc_ndisks;
+ g_handleattr(bp, "GEOM::candelete", &val, sizeof(val));
+}
+
+static void
+g_ventoy_kernel_dump(struct bio *bp)
+{
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ struct bio *cbp;
+ struct g_kerneldump *gkd;
+ u_int i;
+
+ sc = bp->bio_to->geom->softc;
+ gkd = (struct g_kerneldump *)bp->bio_data;
+ for (i = 0; i < sc->sc_ndisks; i++) {
+ if (sc->sc_disks[i].d_start <= gkd->offset &&
+ sc->sc_disks[i].d_end > gkd->offset)
+ break;
+ }
+ if (i == sc->sc_ndisks) {
+ g_io_deliver(bp, EOPNOTSUPP);
+ return;
+ }
+ disk = &sc->sc_disks[i];
+ gkd->offset -= disk->d_start;
+ if (gkd->length > disk->d_end - disk->d_start - gkd->offset)
+ gkd->length = disk->d_end - disk->d_start - gkd->offset;
+ cbp = g_clone_bio(bp);
+ if (cbp == NULL) {
+ g_io_deliver(bp, ENOMEM);
+ return;
+ }
+ cbp->bio_done = g_std_done;
+ g_io_request(cbp, disk->d_consumer);
+ G_VENTOY_DEBUG(1, "Kernel dump will go to %s.",
+ disk->d_consumer->provider->name);
+}
+
+static void
+g_ventoy_done(struct bio *bp)
+{
+ struct g_ventoy_softc *sc;
+ struct bio *pbp;
+
+ pbp = bp->bio_parent;
+ sc = pbp->bio_to->geom->softc;
+ mtx_lock(&sc->sc_lock);
+ if (pbp->bio_error == 0)
+ pbp->bio_error = bp->bio_error;
+ pbp->bio_completed += bp->bio_completed;
+ pbp->bio_inbed++;
+ if (pbp->bio_children == pbp->bio_inbed) {
+ mtx_unlock(&sc->sc_lock);
+ g_io_deliver(pbp, pbp->bio_error);
+ } else
+ mtx_unlock(&sc->sc_lock);
+ g_destroy_bio(bp);
+}
+
+static void
+g_ventoy_flush(struct g_ventoy_softc *sc, struct bio *bp)
+{
+ struct bio_queue_head queue;
+ struct g_consumer *cp;
+ struct bio *cbp;
+ u_int no;
+
+ bioq_init(&queue);
+ for (no = 0; no < sc->sc_ndisks; no++) {
+ cbp = g_clone_bio(bp);
+ if (cbp == NULL) {
+ while ((cbp = bioq_takefirst(&queue)) != NULL)
+ g_destroy_bio(cbp);
+ if (bp->bio_error == 0)
+ bp->bio_error = ENOMEM;
+ g_io_deliver(bp, bp->bio_error);
+ return;
+ }
+ bioq_insert_tail(&queue, cbp);
+ cbp->bio_done = g_ventoy_done;
+ cbp->bio_caller1 = sc->sc_disks[no].d_consumer;
+ cbp->bio_to = sc->sc_disks[no].d_consumer->provider;
+ }
+ while ((cbp = bioq_takefirst(&queue)) != NULL) {
+ G_VENTOY_LOGREQ(cbp, "Sending request.");
+ cp = cbp->bio_caller1;
+ cbp->bio_caller1 = NULL;
+ g_io_request(cbp, cp);
+ }
+}
+
+static void
+g_ventoy_start(struct bio *bp)
+{
+ struct bio_queue_head queue;
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ struct g_provider *pp;
+ off_t offset, end, length, off, len;
+ struct bio *cbp;
+ char *addr;
+ u_int no;
+
+ pp = bp->bio_to;
+ sc = pp->geom->softc;
+ /*
+ * If sc == NULL, provider's error should be set and g_ventoy_start()
+ * should not be called at all.
+ */
+ KASSERT(sc != NULL,
+ ("Provider's error should be set (error=%d)(device=%s).",
+ bp->bio_to->error, bp->bio_to->name));
+
+ G_VENTOY_LOGREQ(bp, "Request received.");
+
+ switch (bp->bio_cmd) {
+ case BIO_READ:
+ case BIO_WRITE:
+ case BIO_DELETE:
+ break;
+ case BIO_SPEEDUP:
+ case BIO_FLUSH:
+ g_ventoy_flush(sc, bp);
+ return;
+ case BIO_GETATTR:
+ if (strcmp("GEOM::kerneldump", bp->bio_attribute) == 0) {
+ g_ventoy_kernel_dump(bp);
+ return;
+ } else if (strcmp("GEOM::candelete", bp->bio_attribute) == 0) {
+ g_ventoy_candelete(bp);
+ return;
+ }
+ /* To which provider it should be delivered? */
+ /* FALLTHROUGH */
+ default:
+ g_io_deliver(bp, EOPNOTSUPP);
+ return;
+ }
+
+ offset = bp->bio_offset;
+ length = bp->bio_length;
+ if ((bp->bio_flags & BIO_UNMAPPED) != 0)
+ addr = NULL;
+ else
+ addr = bp->bio_data;
+ end = offset + length;
+
+ bioq_init(&queue);
+ for (no = 0; no < sc->sc_ndisks; no++) {
+ disk = &sc->sc_disks[no];
+ if (disk->d_end <= offset)
+ continue;
+ if (disk->d_start >= end)
+ break;
+
+ off = offset - disk->d_start;
+ len = MIN(length, disk->d_end - offset);
+ length -= len;
+ offset += len;
+
+ cbp = g_clone_bio(bp);
+ if (cbp == NULL) {
+ while ((cbp = bioq_takefirst(&queue)) != NULL)
+ g_destroy_bio(cbp);
+ if (bp->bio_error == 0)
+ bp->bio_error = ENOMEM;
+ g_io_deliver(bp, bp->bio_error);
+ return;
+ }
+ bioq_insert_tail(&queue, cbp);
+ /*
+ * Fill in the component buf structure.
+ */
+ if (len == bp->bio_length)
+ cbp->bio_done = g_std_done;
+ else
+ cbp->bio_done = g_ventoy_done;
+ cbp->bio_offset = off + disk->d_map_start;
+ cbp->bio_length = len;
+ if ((bp->bio_flags & BIO_UNMAPPED) != 0) {
+ cbp->bio_ma_offset += (uintptr_t)addr;
+ cbp->bio_ma += cbp->bio_ma_offset / PAGE_SIZE;
+ cbp->bio_ma_offset %= PAGE_SIZE;
+ cbp->bio_ma_n = round_page(cbp->bio_ma_offset +
+ cbp->bio_length) / PAGE_SIZE;
+ } else
+ cbp->bio_data = addr;
+ addr += len;
+ cbp->bio_to = disk->d_consumer->provider;
+ cbp->bio_caller1 = disk;
+
+ if (length == 0)
+ break;
+ }
+ KASSERT(length == 0,
+ ("Length is still greater than 0 (class=%s, name=%s).",
+ bp->bio_to->geom->class->name, bp->bio_to->geom->name));
+ while ((cbp = bioq_takefirst(&queue)) != NULL) {
+ G_VENTOY_LOGREQ(cbp, "Sending request.");
+ disk = cbp->bio_caller1;
+ cbp->bio_caller1 = NULL;
+ g_io_request(cbp, disk->d_consumer);
+ }
+}
+
+static void
+g_ventoy_check_and_run(struct g_ventoy_softc *sc)
+{
+ struct g_ventoy_disk *disk;
+ struct g_provider *dp, *pp;
+ u_int no, sectorsize = 0;
+ off_t start;
+ int error;
+
+ g_topology_assert();
+ if (g_ventoy_nvalid(sc) != sc->sc_ndisks)
+ return;
+
+ pp = g_new_providerf(sc->sc_geom, "ventoy/%s", sc->sc_name);
+ pp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE |
+ G_PF_ACCEPT_UNMAPPED;
+ start = 0;
+ for (no = 0; no < sc->sc_ndisks; no++) {
+ disk = &sc->sc_disks[no];
+ dp = disk->d_consumer->provider;
+ disk->d_start = start;
+ disk->d_end = disk->d_start + (disk->d_map_end - disk->d_map_start);
+ if (sc->sc_type == G_VENTOY_TYPE_AUTOMATIC)
+ disk->d_end -= dp->sectorsize;
+ start = disk->d_end;
+ error = g_access(disk->d_consumer, 1, 0, 0);
+ if (error == 0) {
+ error = g_getattr("GEOM::candelete", disk->d_consumer,
+ &disk->d_candelete);
+ if (error != 0)
+ disk->d_candelete = 0;
+ (void)g_access(disk->d_consumer, -1, 0, 0);
+ } else
+ G_VENTOY_DEBUG(1, "Failed to access disk %s, error %d.",
+ dp->name, error);
+ if (no == 0)
+ sectorsize = dp->sectorsize;
+ else
+ sectorsize = lcm(sectorsize, dp->sectorsize);
+
+ /* A provider underneath us doesn't support unmapped */
+ if ((dp->flags & G_PF_ACCEPT_UNMAPPED) == 0) {
+ G_VENTOY_DEBUG(1, "Cancelling unmapped "
+ "because of %s.", dp->name);
+ pp->flags &= ~G_PF_ACCEPT_UNMAPPED;
+ }
+ }
+ pp->sectorsize = sectorsize;
+ /* We have sc->sc_disks[sc->sc_ndisks - 1].d_end in 'start'. */
+ pp->mediasize = start;
+ pp->stripesize = sc->sc_disks[0].d_consumer->provider->stripesize;
+ pp->stripeoffset = sc->sc_disks[0].d_consumer->provider->stripeoffset;
+ sc->sc_provider = pp;
+ g_error_provider(pp, 0);
+
+ G_VENTOY_DEBUG(0, "Device %s activated.", sc->sc_provider->name);
+}
+
+static int
+g_ventoy_read_metadata(struct g_consumer *cp, struct g_ventoy_metadata *md)
+{
+ struct g_provider *pp;
+ u_char *buf;
+ int error;
+
+ g_topology_assert();
+
+ error = g_access(cp, 1, 0, 0);
+ if (error != 0)
+ return (error);
+ pp = cp->provider;
+ g_topology_unlock();
+ buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize,
+ &error);
+ g_topology_lock();
+ g_access(cp, -1, 0, 0);
+ if (buf == NULL)
+ return (error);
+
+ /* Decode metadata. */
+ ventoy_metadata_decode(buf, md);
+ g_free(buf);
+
+ return (0);
+}
+
+/*
+ * Add disk to given device.
+ */
+static int
+g_ventoy_add_disk(struct g_ventoy_softc *sc, struct g_provider *pp, u_int no)
+{
+ struct g_ventoy_disk *disk;
+ struct g_consumer *cp, *fcp;
+ struct g_geom *gp;
+ int error;
+
+ g_topology_assert();
+ /* Metadata corrupted? */
+ if (no >= sc->sc_ndisks)
+ return (EINVAL);
+
+ disk = &sc->sc_disks[no];
+ /* Check if disk is not already attached. */
+ if (disk->d_consumer != NULL)
+ return (EEXIST);
+
+ gp = sc->sc_geom;
+ fcp = LIST_FIRST(&gp->consumer);
+
+ cp = g_new_consumer(gp);
+ cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE;
+ error = g_attach(cp, pp);
+ if (error != 0) {
+ g_destroy_consumer(cp);
+ return (error);
+ }
+
+ if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0)) {
+ error = g_access(cp, fcp->acr, fcp->acw, fcp->ace);
+ if (error != 0) {
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ return (error);
+ }
+ }
+ if (sc->sc_type == G_VENTOY_TYPE_AUTOMATIC) {
+ struct g_ventoy_metadata md;
+
+ /* Re-read metadata. */
+ error = g_ventoy_read_metadata(cp, &md);
+ if (error != 0)
+ goto fail;
+
+ if (strcmp(md.md_magic, G_VENTOY_MAGIC) != 0 ||
+ strcmp(md.md_name, sc->sc_name) != 0 ||
+ md.md_id != sc->sc_id) {
+ G_VENTOY_DEBUG(0, "Metadata on %s changed.", pp->name);
+ goto fail;
+ }
+ }
+
+ cp->private = disk;
+ disk->d_consumer = cp;
+ disk->d_softc = sc;
+ disk->d_start = 0; /* not yet */
+ disk->d_end = 0; /* not yet */
+ disk->d_removed = 0;
+
+ disk->d_map_start = g_disk_map_start;
+ disk->d_map_end = g_disk_map_end;
+
+ G_VENTOY_DEBUG(0, "Disk %s attached to %s.", pp->name, sc->sc_name);
+
+ g_ventoy_check_and_run(sc);
+
+ return (0);
+fail:
+ if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0))
+ g_access(cp, -fcp->acr, -fcp->acw, -fcp->ace);
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ return (error);
+}
+
+static struct g_geom *
+g_ventoy_create(struct g_class *mp, const struct g_ventoy_metadata *md,
+ u_int type)
+{
+ struct g_ventoy_softc *sc;
+ struct g_geom *gp;
+ u_int no;
+
+ G_VENTOY_DEBUG(1, "Creating device %s (id=%u).", md->md_name,
+ md->md_id);
+
+ /* One disks is minimum. */
+ if (md->md_all < 1)
+ return (NULL);
+
+ /* Check for duplicate unit */
+ LIST_FOREACH(gp, &mp->geom, geom) {
+ sc = gp->softc;
+ if (sc != NULL && strcmp(sc->sc_name, md->md_name) == 0) {
+ G_VENTOY_DEBUG(0, "Device %s already configured.",
+ gp->name);
+ return (NULL);
+ }
+ }
+ gp = g_new_geomf(mp, "%s", md->md_name);
+ sc = malloc(sizeof(*sc), M_VENTOY, M_WAITOK | M_ZERO);
+ gp->start = g_ventoy_start;
+ gp->spoiled = g_ventoy_orphan;
+ gp->orphan = g_ventoy_orphan;
+ gp->access = g_ventoy_access;
+ gp->dumpconf = g_ventoy_dumpconf;
+
+ sc->sc_id = md->md_id;
+ sc->sc_ndisks = md->md_all;
+ sc->sc_disks = malloc(sizeof(struct g_ventoy_disk) * sc->sc_ndisks,
+ M_VENTOY, M_WAITOK | M_ZERO);
+ for (no = 0; no < sc->sc_ndisks; no++)
+ sc->sc_disks[no].d_consumer = NULL;
+ sc->sc_type = type;
+ mtx_init(&sc->sc_lock, "gventoy lock", NULL, MTX_DEF);
+
+ gp->softc = sc;
+ sc->sc_geom = gp;
+ sc->sc_provider = NULL;
+
+ G_VENTOY_DEBUG(0, "Device %s created (id=%u).", sc->sc_name, sc->sc_id);
+
+ return (gp);
+}
+
+static int
+g_ventoy_destroy(struct g_ventoy_softc *sc, boolean_t force)
+{
+ struct g_provider *pp;
+ struct g_consumer *cp, *cp1;
+ struct g_geom *gp;
+
+ g_topology_assert();
+
+ if (sc == NULL)
+ return (ENXIO);
+
+ pp = sc->sc_provider;
+ if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) {
+ if (force) {
+ G_VENTOY_DEBUG(0, "Device %s is still open, so it "
+ "can't be definitely removed.", pp->name);
+ } else {
+ G_VENTOY_DEBUG(1,
+ "Device %s is still open (r%dw%de%d).", pp->name,
+ pp->acr, pp->acw, pp->ace);
+ return (EBUSY);
+ }
+ }
+
+ gp = sc->sc_geom;
+ LIST_FOREACH_SAFE(cp, &gp->consumer, consumer, cp1) {
+ g_ventoy_remove_disk(cp->private);
+ if (cp1 == NULL)
+ return (0); /* Recursion happened. */
+ }
+ if (!LIST_EMPTY(&gp->consumer))
+ return (EINPROGRESS);
+
+ gp->softc = NULL;
+ KASSERT(sc->sc_provider == NULL, ("Provider still exists? (device=%s)",
+ gp->name));
+ free(sc->sc_disks, M_VENTOY);
+ mtx_destroy(&sc->sc_lock);
+ free(sc, M_VENTOY);
+
+ G_VENTOY_DEBUG(0, "Device %s destroyed.", gp->name);
+ g_wither_geom(gp, ENXIO);
+ return (0);
+}
+
+static int
+g_ventoy_destroy_geom(struct gctl_req *req __unused,
+ struct g_class *mp __unused, struct g_geom *gp)
+{
+ struct g_ventoy_softc *sc;
+
+ sc = gp->softc;
+ return (g_ventoy_destroy(sc, 0));
+}
+
+static bool g_vtoy_check_disk(struct g_class *mp, struct g_provider *pp)
+{
+ int i;
+ uint8_t *buf;
+ char uuid[64];
+ const char *value;
+ struct g_consumer *cp;
+ struct g_geom *gp;
+
+ if (g_ventoy_disk_size == 0)
+ {
+ if (resource_string_value("ventoy", 0, "disksize", &value) == 0)
+ {
+ G_DEBUG("ventoy.disksize: %s\n", value);
+ g_ventoy_disk_size = strtouq(value, NULL, 0);
+ }
+
+ if (resource_string_value("ventoy", 0, "diskuuid", &g_ventoy_disk_uuid) == 0)
+ {
+ G_DEBUG("ventoy.diskuuid: <%s>\n", g_ventoy_disk_uuid);
+ }
+ }
+
+ if (g_ventoy_disk_size != pp->mediasize)
+ {
+ return false;
+ }
+
+ if (strncmp(pp->name, "cd", 2) == 0 || strchr(pp->name, '/'))
+ {
+ return false;
+ }
+
+ /* read UUID from disk */
+ gp = g_new_geomf(mp, "ventoy:taste");
+ gp->start = NULL;
+ gp->access = g_ventoy_access;
+ gp->orphan = g_ventoy_orphan;
+ cp = g_new_consumer(gp);
+ g_attach(cp, pp);
+
+ g_access(cp, 1, 0, 0);
+ g_topology_unlock();
+ buf = g_read_data(cp, 0, pp->sectorsize, NULL);
+ g_topology_lock();
+ g_access(cp, -1, 0, 0);
+
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ g_destroy_geom(gp);
+ gp = NULL;
+
+ if (!buf)
+ {
+ return false;
+ }
+
+ for (i = 0; i < 16; i++)
+ {
+ sprintf(uuid + i * 2, "%02x", buf[0x180 + i]);
+ }
+ g_free(buf);
+
+ if (strncmp(g_ventoy_disk_uuid, uuid, 32) == 0)
+ {
+ return true;
+ }
+
+ return false;
+}
+
+static struct g_geom *
+g_ventoy_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
+{
+ int i;
+ int error;
+ int disknum;
+ char *endpos;
+ const char *value;
+ struct g_geom *gp;
+ struct g_ventoy_metadata md;
+ struct g_ventoy_softc *sc;
+
+ if (g_ventoy_tasted)
+ {
+ return NULL;
+ }
+
+ G_DEBUG("%s(%s, %s)\n", __func__, mp->name, pp->name);
+ g_topology_assert();
+
+ /* Skip providers that are already open for writing. */
+ if (pp->acw > 0)
+ return (NULL);
+
+ if (!g_vtoy_check_disk(mp, pp))
+ {
+ return NULL;
+ }
+
+ g_ventoy_tasted = true;
+
+ G_DEBUG("######### ventoy disk <%s> #############\n", pp->name);
+
+ resource_int_value("ventoy", 0, "segnum", &disknum);
+
+ strlcpy(md.md_magic, G_VENTOY_MAGIC, sizeof(md.md_magic));
+ md.md_version = G_VENTOY_VERSION;
+ strlcpy(md.md_name, "IMAGE", sizeof(md.md_name));
+ md.md_id = arc4random();
+ md.md_no = 0;
+ md.md_all = (uint16_t)disknum;
+ bzero(md.md_provider, sizeof(md.md_provider));
+ /* This field is not important here. */
+ md.md_provsize = 0;
+
+ gp = g_ventoy_create(mp, &md, G_VENTOY_TYPE_MANUAL);
+ if (gp == NULL) {
+ G_VENTOY_DEBUG(0, "Cannot create device %s.",
+ md.md_name);
+ return (NULL);
+ }
+ sc = gp->softc;
+
+ for (i = 0; i < disknum; i ++)
+ {
+ if (resource_string_value("ventoy", i, "seg", &value) == 0)
+ {
+ g_disk_map_start = strtouq(value, &endpos, 0);
+ g_disk_map_end = strtouq(endpos + 1, NULL, 0);
+ }
+ else
+ {
+ printf("Failed to parse ventoy seg %d\n", i);
+ continue;
+ }
+
+ G_DEBUG("ventoy segment%d: %s\n", i, value);
+
+ G_VENTOY_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name);
+ error = g_ventoy_add_disk(sc, pp, i);
+ if (error != 0) {
+ G_VENTOY_DEBUG(0,
+ "Cannot add disk %s to %s (error=%d).", pp->name,
+ gp->name, error);
+ g_ventoy_destroy(sc, 1);
+ return (NULL);
+ }
+
+ g_disk_map_start = 0;
+ g_disk_map_end = 0;
+ }
+
+ return (gp);
+}
+
+static void
+g_ventoy_ctl_create(struct gctl_req *req, struct g_class *mp)
+{
+ u_int attached, no;
+ struct g_ventoy_metadata md;
+ struct g_provider *pp;
+ struct g_ventoy_softc *sc;
+ struct g_geom *gp;
+ struct sbuf *sb;
+ const char *name;
+ char param[16];
+ int *nargs;
+
+ g_topology_assert();
+ nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
+ if (nargs == NULL) {
+ gctl_error(req, "No '%s' argument.", "nargs");
+ return;
+ }
+ if (*nargs < 2) {
+ gctl_error(req, "Too few arguments.");
+ return;
+ }
+
+ strlcpy(md.md_magic, G_VENTOY_MAGIC, sizeof(md.md_magic));
+ md.md_version = G_VENTOY_VERSION;
+ name = gctl_get_asciiparam(req, "arg0");
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%u' argument.", 0);
+ return;
+ }
+ strlcpy(md.md_name, name, sizeof(md.md_name));
+ md.md_id = arc4random();
+ md.md_no = 0;
+ md.md_all = *nargs - 1;
+ bzero(md.md_provider, sizeof(md.md_provider));
+ /* This field is not important here. */
+ md.md_provsize = 0;
+
+ /* Check all providers are valid */
+ for (no = 1; no < *nargs; no++) {
+ snprintf(param, sizeof(param), "arg%u", no);
+ pp = gctl_get_provider(req, param);
+ if (pp == NULL)
+ return;
+ }
+
+ gp = g_ventoy_create(mp, &md, G_VENTOY_TYPE_MANUAL);
+ if (gp == NULL) {
+ gctl_error(req, "Can't configure %s.", md.md_name);
+ return;
+ }
+
+ sc = gp->softc;
+ sb = sbuf_new_auto();
+ sbuf_printf(sb, "Can't attach disk(s) to %s:", gp->name);
+ for (attached = 0, no = 1; no < *nargs; no++) {
+ snprintf(param, sizeof(param), "arg%u", no);
+ pp = gctl_get_provider(req, param);
+ if (pp == NULL) {
+ name = gctl_get_asciiparam(req, param);
+ MPASS(name != NULL);
+ sbuf_printf(sb, " %s", name);
+ continue;
+ }
+ if (g_ventoy_add_disk(sc, pp, no - 1) != 0) {
+ G_VENTOY_DEBUG(1, "Disk %u (%s) not attached to %s.",
+ no, pp->name, gp->name);
+ sbuf_printf(sb, " %s", pp->name);
+ continue;
+ }
+ attached++;
+ }
+ sbuf_finish(sb);
+ if (md.md_all != attached) {
+ g_ventoy_destroy(gp->softc, 1);
+ gctl_error(req, "%s", sbuf_data(sb));
+ }
+ sbuf_delete(sb);
+}
+
+static struct g_ventoy_softc *
+g_ventoy_find_device(struct g_class *mp, const char *name)
+{
+ struct g_ventoy_softc *sc;
+ struct g_geom *gp;
+
+ if (strncmp(name, _PATH_DEV, strlen(_PATH_DEV)) == 0)
+ name += strlen(_PATH_DEV);
+
+ LIST_FOREACH(gp, &mp->geom, geom) {
+ sc = gp->softc;
+ if (sc == NULL)
+ continue;
+ if (strcmp(sc->sc_name, name) == 0)
+ return (sc);
+ }
+ return (NULL);
+}
+
+static void
+g_ventoy_ctl_destroy(struct gctl_req *req, struct g_class *mp)
+{
+ struct g_ventoy_softc *sc;
+ int *force, *nargs, error;
+ const char *name;
+ char param[16];
+ u_int i;
+
+ g_topology_assert();
+
+ nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
+ if (nargs == NULL) {
+ gctl_error(req, "No '%s' argument.", "nargs");
+ return;
+ }
+ if (*nargs <= 0) {
+ gctl_error(req, "Missing device(s).");
+ return;
+ }
+ force = gctl_get_paraml(req, "force", sizeof(*force));
+ if (force == NULL) {
+ gctl_error(req, "No '%s' argument.", "force");
+ return;
+ }
+
+ for (i = 0; i < (u_int)*nargs; i++) {
+ snprintf(param, sizeof(param), "arg%u", i);
+ name = gctl_get_asciiparam(req, param);
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%u' argument.", i);
+ return;
+ }
+ sc = g_ventoy_find_device(mp, name);
+ if (sc == NULL) {
+ gctl_error(req, "No such device: %s.", name);
+ return;
+ }
+ error = g_ventoy_destroy(sc, *force);
+ if (error != 0) {
+ gctl_error(req, "Cannot destroy device %s (error=%d).",
+ sc->sc_name, error);
+ return;
+ }
+ }
+}
+
+static void
+g_ventoy_config(struct gctl_req *req, struct g_class *mp, const char *verb)
+{
+ uint32_t *version;
+
+ return;
+
+ g_topology_assert();
+
+ version = gctl_get_paraml(req, "version", sizeof(*version));
+ if (version == NULL) {
+ gctl_error(req, "No '%s' argument.", "version");
+ return;
+ }
+ if (*version != G_VENTOY_VERSION) {
+ gctl_error(req, "Userland and kernel parts are out of sync.");
+ return;
+ }
+
+ if (strcmp(verb, "create") == 0) {
+ g_ventoy_ctl_create(req, mp);
+ return;
+ } else if (strcmp(verb, "destroy") == 0 ||
+ strcmp(verb, "stop") == 0) {
+ g_ventoy_ctl_destroy(req, mp);
+ return;
+ }
+ gctl_error(req, "Unknown verb.");
+}
+
+static void
+g_ventoy_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
+ struct g_consumer *cp, struct g_provider *pp)
+{
+ struct g_ventoy_softc *sc;
+
+ g_topology_assert();
+ sc = gp->softc;
+ if (sc == NULL)
+ return;
+ if (pp != NULL) {
+ /* Nothing here. */
+ } else if (cp != NULL) {
+ struct g_ventoy_disk *disk;
+
+ disk = cp->private;
+ if (disk == NULL)
+ return;
+ sbuf_printf(sb, "%s<End>%jd</End>\n", indent,
+ (intmax_t)disk->d_end);
+ sbuf_printf(sb, "%s<Start>%jd</Start>\n", indent,
+ (intmax_t)disk->d_start);
+ } else {
+ sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id);
+ sbuf_printf(sb, "%s<Type>", indent);
+ switch (sc->sc_type) {
+ case G_VENTOY_TYPE_AUTOMATIC:
+ sbuf_cat(sb, "AUTOMATIC");
+ break;
+ case G_VENTOY_TYPE_MANUAL:
+ sbuf_cat(sb, "MANUAL");
+ break;
+ default:
+ sbuf_cat(sb, "UNKNOWN");
+ break;
+ }
+ sbuf_cat(sb, "</Type>\n");
+ sbuf_printf(sb, "%s<Status>Total=%u, Online=%u</Status>\n",
+ indent, sc->sc_ndisks, g_ventoy_nvalid(sc));
+ sbuf_printf(sb, "%s<State>", indent);
+ if (sc->sc_provider != NULL && sc->sc_provider->error == 0)
+ sbuf_cat(sb, "UP");
+ else
+ sbuf_cat(sb, "DOWN");
+ sbuf_cat(sb, "</State>\n");
+ }
+}
+
+DECLARE_GEOM_CLASS(g_ventoy_class, g_ventoy);
+//MODULE_VERSION(geom_ventoy, 0);
--- /dev/null
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 longpanda <admin@ventoy.net>
+ * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _G_VENTOY_H_
+#define _G_VENTOY_H_
+
+#include <sys/endian.h>
+
+#define G_VENTOY_CLASS_NAME "VENTOY"
+
+#define G_VENTOY_MAGIC "GEOM::VENTOY"
+/*
+ * Version history:
+ * 1 - Initial version number.
+ * 2 - Added 'stop' command to gconcat(8).
+ * 3 - Added md_provider field to metadata and '-h' option to gconcat(8).
+ * 4 - Added md_provsize field to metadata.
+ */
+#define G_VENTOY_VERSION 4
+
+#ifdef _KERNEL
+#define G_VENTOY_TYPE_MANUAL 0
+#define G_VENTOY_TYPE_AUTOMATIC 1
+
+#define G_DEBUG(...) if (bootverbose) printf(__VA_ARGS__)
+#define G_VENTOY_DEBUG(lvl, ...) if (g_ventoy_debug) printf(__VA_ARGS__)
+#define G_VENTOY_LOGREQ(bp, ...) if (g_ventoy_debug) printf(__VA_ARGS__)
+
+struct g_ventoy_disk {
+ struct g_consumer *d_consumer;
+ struct g_ventoy_softc *d_softc;
+ off_t d_start;
+ off_t d_end;
+ off_t d_map_start;
+ off_t d_map_end;
+ int d_candelete;
+ int d_removed;
+};
+
+struct g_ventoy_softc {
+ u_int sc_type; /* provider type */
+ struct g_geom *sc_geom;
+ struct g_provider *sc_provider;
+ uint32_t sc_id; /* concat unique ID */
+
+ struct g_ventoy_disk *sc_disks;
+ uint16_t sc_ndisks;
+ struct mtx sc_lock;
+};
+#define sc_name sc_geom->name
+#endif /* _KERNEL */
+
+struct g_ventoy_metadata {
+ char md_magic[16]; /* Magic value. */
+ uint32_t md_version; /* Version number. */
+ char md_name[16]; /* Concat name. */
+ uint32_t md_id; /* Unique ID. */
+ uint16_t md_no; /* Disk number. */
+ uint16_t md_all; /* Number of all disks. */
+ char md_provider[16]; /* Hardcoded provider. */
+ uint64_t md_provsize; /* Provider's size. */
+};
+static __inline void
+ventoy_metadata_encode(const struct g_ventoy_metadata *md, u_char *data)
+{
+
+ bcopy(md->md_magic, data, sizeof(md->md_magic));
+ le32enc(data + 16, md->md_version);
+ bcopy(md->md_name, data + 20, sizeof(md->md_name));
+ le32enc(data + 36, md->md_id);
+ le16enc(data + 40, md->md_no);
+ le16enc(data + 42, md->md_all);
+ bcopy(md->md_provider, data + 44, sizeof(md->md_provider));
+ le64enc(data + 60, md->md_provsize);
+}
+static __inline void
+ventoy_metadata_decode(const u_char *data, struct g_ventoy_metadata *md)
+{
+
+ bcopy(data, md->md_magic, sizeof(md->md_magic));
+ md->md_version = le32dec(data + 16);
+ bcopy(data + 20, md->md_name, sizeof(md->md_name));
+ md->md_id = le32dec(data + 36);
+ md->md_no = le16dec(data + 40);
+ md->md_all = le16dec(data + 42);
+ bcopy(data + 44, md->md_provider, sizeof(md->md_provider));
+ md->md_provsize = le64dec(data + 60);
+}
+#endif /* _G_VENTOY_H_ */
--- /dev/null
+# $FreeBSD$
+
+.PATH: ${SRCTOP}/sys/geom/ventoy
+
+KMOD= geom_ventoy
+SRCS= g_ventoy.c
+
+.include <bsd.kmod.mk>
--- /dev/null
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 longpanda <admin@ventoy.net>
+ * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/bio.h>
+#include <sys/sbuf.h>
+#include <sys/sysctl.h>
+#include <sys/malloc.h>
+#include <geom/geom.h>
+#include <geom/ventoy/g_ventoy.h>
+
+FEATURE(geom_ventoy, "GEOM ventoy support");
+
+static MALLOC_DEFINE(M_VENTOY, "ventoy_data", "GEOM_VENTOY Data");
+
+SYSCTL_DECL(_kern_geom);
+static SYSCTL_NODE(_kern_geom, OID_AUTO, ventoy, CTLFLAG_RW, 0,
+ "GEOM_VENTOY stuff");
+static u_int g_ventoy_debug = 0;
+SYSCTL_UINT(_kern_geom_ventoy, OID_AUTO, debug, CTLFLAG_RWTUN, &g_ventoy_debug, 0,
+ "Debug level");
+
+extern int resource_string_value(const char *name, int unit, const char *resname, const char **result);
+extern int resource_int_value(const char *name, int unit, const char *resname, int *result);
+
+static int g_ventoy_destroy(struct g_ventoy_softc *sc, boolean_t force);
+static int g_ventoy_destroy_geom(struct gctl_req *req, struct g_class *mp,
+ struct g_geom *gp);
+
+static g_taste_t g_ventoy_taste;
+static g_ctl_req_t g_ventoy_config;
+static g_dumpconf_t g_ventoy_dumpconf;
+
+static const char *g_ventoy_disk_uuid = NULL;
+static bool g_ventoy_tasted = false;
+static off_t g_ventoy_disk_size = 0;
+static off_t g_disk_map_start = 0;
+static off_t g_disk_map_end = 0;
+
+struct g_class g_ventoy_class = {
+ .name = G_VENTOY_CLASS_NAME,
+ .version = G_VERSION,
+ .ctlreq = g_ventoy_config,
+ .taste = g_ventoy_taste,
+ .destroy_geom = g_ventoy_destroy_geom
+};
+
+
+/*
+ * Greatest Common Divisor.
+ */
+static u_int
+gcd(u_int a, u_int b)
+{
+ u_int c;
+
+ while (b != 0) {
+ c = a;
+ a = b;
+ b = (c % b);
+ }
+ return (a);
+}
+
+/*
+ * Least Common Multiple.
+ */
+static u_int
+lcm(u_int a, u_int b)
+{
+
+ return ((a * b) / gcd(a, b));
+}
+
+/*
+ * Return the number of valid disks.
+ */
+static u_int
+g_ventoy_nvalid(struct g_ventoy_softc *sc)
+{
+ u_int i, no;
+
+ no = 0;
+ for (i = 0; i < sc->sc_ndisks; i++) {
+ if (sc->sc_disks[i].d_consumer != NULL)
+ no++;
+ }
+
+ return (no);
+}
+
+static void
+g_ventoy_remove_disk(struct g_ventoy_disk *disk)
+{
+ struct g_consumer *cp;
+ struct g_ventoy_softc *sc;
+
+ g_topology_assert();
+ KASSERT(disk->d_consumer != NULL, ("Non-valid disk in %s.", __func__));
+ sc = disk->d_softc;
+ cp = disk->d_consumer;
+
+ if (!disk->d_removed) {
+ G_VENTOY_DEBUG(0, "Disk %s removed from %s.",
+ cp->provider->name, sc->sc_name);
+ disk->d_removed = 1;
+ }
+
+ if (sc->sc_provider != NULL) {
+ sc->sc_provider->flags |= G_PF_WITHER;
+ G_VENTOY_DEBUG(0, "Device %s deactivated.",
+ sc->sc_provider->name);
+ g_orphan_provider(sc->sc_provider, ENXIO);
+ sc->sc_provider = NULL;
+ }
+
+ if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
+ return;
+ disk->d_consumer = NULL;
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ /* If there are no valid disks anymore, remove device. */
+ if (LIST_EMPTY(&sc->sc_geom->consumer))
+ g_ventoy_destroy(sc, 1);
+}
+
+static void
+g_ventoy_orphan(struct g_consumer *cp)
+{
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ struct g_geom *gp;
+
+ g_topology_assert();
+ gp = cp->geom;
+ sc = gp->softc;
+ if (sc == NULL)
+ return;
+
+ disk = cp->private;
+ if (disk == NULL) /* Possible? */
+ return;
+ g_ventoy_remove_disk(disk);
+}
+
+static int
+g_ventoy_access(struct g_provider *pp, int dr, int dw, int de)
+{
+ struct g_consumer *cp1, *cp2, *tmp;
+ struct g_ventoy_disk *disk;
+ struct g_geom *gp;
+ int error;
+
+ if (dw > 0) /* readonly */
+ return (EPERM);
+
+ g_topology_assert();
+ gp = pp->geom;
+
+ /* On first open, grab an extra "exclusive" bit */
+ if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0)
+ de++;
+ /* ... and let go of it on last close */
+ if ((pp->acr + dr) == 0 && (pp->acw + dw) == 0 && (pp->ace + de) == 0)
+ de--;
+
+ LIST_FOREACH_SAFE(cp1, &gp->consumer, consumer, tmp) {
+ error = g_access(cp1, dr, dw, de);
+ if (error != 0)
+ goto fail;
+ disk = cp1->private;
+ if (cp1->acr == 0 && cp1->acw == 0 && cp1->ace == 0 &&
+ disk->d_removed) {
+ g_ventoy_remove_disk(disk); /* May destroy geom. */
+ }
+ }
+ return (0);
+
+fail:
+ LIST_FOREACH(cp2, &gp->consumer, consumer) {
+ if (cp1 == cp2)
+ break;
+ g_access(cp2, -dr, -dw, -de);
+ }
+ return (error);
+}
+
+static void
+g_ventoy_kernel_dump(struct bio *bp)
+{
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ struct bio *cbp;
+ struct g_kerneldump *gkd;
+ u_int i;
+
+ sc = bp->bio_to->geom->softc;
+ gkd = (struct g_kerneldump *)bp->bio_data;
+ for (i = 0; i < sc->sc_ndisks; i++) {
+ if (sc->sc_disks[i].d_start <= gkd->offset &&
+ sc->sc_disks[i].d_end > gkd->offset)
+ break;
+ }
+ if (i == sc->sc_ndisks)
+ g_io_deliver(bp, EOPNOTSUPP);
+ disk = &sc->sc_disks[i];
+ gkd->offset -= disk->d_start;
+ if (gkd->length > disk->d_end - disk->d_start - gkd->offset)
+ gkd->length = disk->d_end - disk->d_start - gkd->offset;
+ cbp = g_clone_bio(bp);
+ if (cbp == NULL) {
+ g_io_deliver(bp, ENOMEM);
+ return;
+ }
+ cbp->bio_done = g_std_done;
+ g_io_request(cbp, disk->d_consumer);
+ G_VENTOY_DEBUG(1, "Kernel dump will go to %s.",
+ disk->d_consumer->provider->name);
+}
+
+static void
+g_ventoy_flush(struct g_ventoy_softc *sc, struct bio *bp)
+{
+ struct bio_queue_head queue;
+ struct g_consumer *cp;
+ struct bio *cbp;
+ u_int no;
+
+ bioq_init(&queue);
+ for (no = 0; no < sc->sc_ndisks; no++) {
+ cbp = g_clone_bio(bp);
+ if (cbp == NULL) {
+ for (cbp = bioq_first(&queue); cbp != NULL;
+ cbp = bioq_first(&queue)) {
+ bioq_remove(&queue, cbp);
+ g_destroy_bio(cbp);
+ }
+ if (bp->bio_error == 0)
+ bp->bio_error = ENOMEM;
+ g_io_deliver(bp, bp->bio_error);
+ return;
+ }
+ bioq_insert_tail(&queue, cbp);
+ cbp->bio_done = g_std_done;
+ cbp->bio_caller1 = sc->sc_disks[no].d_consumer;
+ cbp->bio_to = sc->sc_disks[no].d_consumer->provider;
+ }
+ for (cbp = bioq_first(&queue); cbp != NULL; cbp = bioq_first(&queue)) {
+ bioq_remove(&queue, cbp);
+ G_VENTOY_LOGREQ(cbp, "Sending request.");
+ cp = cbp->bio_caller1;
+ cbp->bio_caller1 = NULL;
+ g_io_request(cbp, cp);
+ }
+}
+
+static void
+g_ventoy_start(struct bio *bp)
+{
+ struct bio_queue_head queue;
+ struct g_ventoy_softc *sc;
+ struct g_ventoy_disk *disk;
+ struct g_provider *pp;
+ off_t offset, end, length, off, len;
+ struct bio *cbp;
+ char *addr;
+ u_int no;
+
+ pp = bp->bio_to;
+ sc = pp->geom->softc;
+ /*
+ * If sc == NULL, provider's error should be set and g_ventoy_start()
+ * should not be called at all.
+ */
+ KASSERT(sc != NULL,
+ ("Provider's error should be set (error=%d)(device=%s).",
+ bp->bio_to->error, bp->bio_to->name));
+
+ G_VENTOY_LOGREQ(bp, "Request received.");
+
+ switch (bp->bio_cmd) {
+ case BIO_READ:
+ case BIO_WRITE:
+ case BIO_DELETE:
+ break;
+ case BIO_FLUSH:
+ g_ventoy_flush(sc, bp);
+ return;
+ case BIO_GETATTR:
+ if (strcmp("GEOM::kerneldump", bp->bio_attribute) == 0) {
+ g_ventoy_kernel_dump(bp);
+ return;
+ }
+ /* To which provider it should be delivered? */
+ /* FALLTHROUGH */
+ default:
+ g_io_deliver(bp, EOPNOTSUPP);
+ return;
+ }
+
+ offset = bp->bio_offset;
+ length = bp->bio_length;
+ addr = bp->bio_data;
+ end = offset + length;
+
+ bioq_init(&queue);
+ for (no = 0; no < sc->sc_ndisks; no++) {
+ disk = &sc->sc_disks[no];
+ if (disk->d_end <= offset)
+ continue;
+ if (disk->d_start >= end)
+ break;
+
+ off = offset - disk->d_start;
+ len = MIN(length, disk->d_end - offset);
+ length -= len;
+ offset += len;
+
+ cbp = g_clone_bio(bp);
+ if (cbp == NULL) {
+ for (cbp = bioq_first(&queue); cbp != NULL;
+ cbp = bioq_first(&queue)) {
+ bioq_remove(&queue, cbp);
+ g_destroy_bio(cbp);
+ }
+ if (bp->bio_error == 0)
+ bp->bio_error = ENOMEM;
+ g_io_deliver(bp, bp->bio_error);
+ return;
+ }
+ bioq_insert_tail(&queue, cbp);
+ /*
+ * Fill in the component buf structure.
+ */
+ cbp->bio_done = g_std_done;
+ cbp->bio_offset = off + disk->d_map_start;
+ cbp->bio_data = addr;
+ addr += len;
+ cbp->bio_length = len;
+ cbp->bio_to = disk->d_consumer->provider;
+ cbp->bio_caller1 = disk;
+
+ if (length == 0)
+ break;
+ }
+ KASSERT(length == 0,
+ ("Length is still greater than 0 (class=%s, name=%s).",
+ bp->bio_to->geom->class->name, bp->bio_to->geom->name));
+ for (cbp = bioq_first(&queue); cbp != NULL; cbp = bioq_first(&queue)) {
+ bioq_remove(&queue, cbp);
+ G_VENTOY_LOGREQ(cbp, "Sending request.");
+ disk = cbp->bio_caller1;
+ cbp->bio_caller1 = NULL;
+ g_io_request(cbp, disk->d_consumer);
+ }
+}
+
+static void
+g_ventoy_check_and_run(struct g_ventoy_softc *sc)
+{
+ struct g_ventoy_disk *disk;
+ struct g_provider *dp, *pp;
+ u_int no, sectorsize = 0;
+ off_t start;
+
+ g_topology_assert();
+ if (g_ventoy_nvalid(sc) != sc->sc_ndisks)
+ return;
+
+ pp = g_new_providerf(sc->sc_geom, "ventoy/%s", sc->sc_name);
+ start = 0;
+ for (no = 0; no < sc->sc_ndisks; no++) {
+ disk = &sc->sc_disks[no];
+ dp = disk->d_consumer->provider;
+ disk->d_start = start;
+ disk->d_end = disk->d_start + (disk->d_map_end - disk->d_map_start);
+ if (sc->sc_type == G_VENTOY_TYPE_AUTOMATIC)
+ disk->d_end -= dp->sectorsize;
+ start = disk->d_end;
+ if (no == 0)
+ sectorsize = dp->sectorsize;
+ else {
+ sectorsize = lcm(sectorsize, dp->sectorsize);
+
+ }
+ }
+ pp->sectorsize = sectorsize;
+ /* We have sc->sc_disks[sc->sc_ndisks - 1].d_end in 'start'. */
+ pp->mediasize = start;
+ pp->stripesize = sc->sc_disks[0].d_consumer->provider->stripesize;
+ pp->stripeoffset = sc->sc_disks[0].d_consumer->provider->stripeoffset;
+ sc->sc_provider = pp;
+ g_error_provider(pp, 0);
+
+ G_VENTOY_DEBUG(0, "Device %s activated.", sc->sc_provider->name);
+}
+
+static int
+g_ventoy_read_metadata(struct g_consumer *cp, struct g_ventoy_metadata *md)
+{
+ struct g_provider *pp;
+ u_char *buf;
+ int error;
+
+ g_topology_assert();
+
+ error = g_access(cp, 1, 0, 0);
+ if (error != 0)
+ return (error);
+ pp = cp->provider;
+ g_topology_unlock();
+ buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize,
+ &error);
+ g_topology_lock();
+ g_access(cp, -1, 0, 0);
+ if (buf == NULL)
+ return (error);
+
+ /* Decode metadata. */
+ ventoy_metadata_decode(buf, md);
+ g_free(buf);
+
+ return (0);
+}
+
+/*
+ * Add disk to given device.
+ */
+static int
+g_ventoy_add_disk(struct g_ventoy_softc *sc, struct g_provider *pp, u_int no)
+{
+ struct g_ventoy_disk *disk;
+ struct g_consumer *cp, *fcp;
+ struct g_geom *gp;
+ int error;
+
+ g_topology_assert();
+ /* Metadata corrupted? */
+ if (no >= sc->sc_ndisks)
+ return (EINVAL);
+
+ disk = &sc->sc_disks[no];
+ /* Check if disk is not already attached. */
+ if (disk->d_consumer != NULL)
+ return (EEXIST);
+
+ gp = sc->sc_geom;
+ fcp = LIST_FIRST(&gp->consumer);
+
+ cp = g_new_consumer(gp);
+ error = g_attach(cp, pp);
+ if (error != 0) {
+ g_destroy_consumer(cp);
+ return (error);
+ }
+
+ if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0)) {
+ error = g_access(cp, fcp->acr, fcp->acw, fcp->ace);
+ if (error != 0) {
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ return (error);
+ }
+ }
+ if (sc->sc_type == G_VENTOY_TYPE_AUTOMATIC) {
+ struct g_ventoy_metadata md;
+
+ /* Re-read metadata. */
+ error = g_ventoy_read_metadata(cp, &md);
+ if (error != 0)
+ goto fail;
+
+ if (strcmp(md.md_magic, G_VENTOY_MAGIC) != 0 ||
+ strcmp(md.md_name, sc->sc_name) != 0 ||
+ md.md_id != sc->sc_id) {
+ G_VENTOY_DEBUG(0, "Metadata on %s changed.", pp->name);
+ goto fail;
+ }
+ }
+
+ cp->private = disk;
+ disk->d_consumer = cp;
+ disk->d_softc = sc;
+ disk->d_start = 0; /* not yet */
+ disk->d_end = 0; /* not yet */
+ disk->d_removed = 0;
+
+ disk->d_map_start = g_disk_map_start;
+ disk->d_map_end = g_disk_map_end;
+
+ G_VENTOY_DEBUG(0, "Disk %s attached to %s.", pp->name, sc->sc_name);
+
+ g_ventoy_check_and_run(sc);
+
+ return (0);
+fail:
+ if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0))
+ g_access(cp, -fcp->acr, -fcp->acw, -fcp->ace);
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ return (error);
+}
+
+static struct g_geom *
+g_ventoy_create(struct g_class *mp, const struct g_ventoy_metadata *md,
+ u_int type)
+{
+ struct g_ventoy_softc *sc;
+ struct g_geom *gp;
+ u_int no;
+
+ G_VENTOY_DEBUG(1, "Creating device %s (id=%u).", md->md_name,
+ md->md_id);
+
+ /* One disks is minimum. */
+ if (md->md_all < 1)
+ return (NULL);
+
+ /* Check for duplicate unit */
+ LIST_FOREACH(gp, &mp->geom, geom) {
+ sc = gp->softc;
+ if (sc != NULL && strcmp(sc->sc_name, md->md_name) == 0) {
+ G_VENTOY_DEBUG(0, "Device %s already configured.",
+ gp->name);
+ return (NULL);
+ }
+ }
+ gp = g_new_geomf(mp, "%s", md->md_name);
+ sc = malloc(sizeof(*sc), M_VENTOY, M_WAITOK | M_ZERO);
+ gp->start = g_ventoy_start;
+ gp->spoiled = g_ventoy_orphan;
+ gp->orphan = g_ventoy_orphan;
+ gp->access = g_ventoy_access;
+ gp->dumpconf = g_ventoy_dumpconf;
+
+ sc->sc_id = md->md_id;
+ sc->sc_ndisks = md->md_all;
+ sc->sc_disks = malloc(sizeof(struct g_ventoy_disk) * sc->sc_ndisks,
+ M_VENTOY, M_WAITOK | M_ZERO);
+ for (no = 0; no < sc->sc_ndisks; no++)
+ sc->sc_disks[no].d_consumer = NULL;
+ sc->sc_type = type;
+
+ gp->softc = sc;
+ sc->sc_geom = gp;
+ sc->sc_provider = NULL;
+
+ G_VENTOY_DEBUG(0, "Device %s created (id=%u).", sc->sc_name, sc->sc_id);
+
+ return (gp);
+}
+
+static int
+g_ventoy_destroy(struct g_ventoy_softc *sc, boolean_t force)
+{
+ struct g_provider *pp;
+ struct g_consumer *cp, *cp1;
+ struct g_geom *gp;
+
+ g_topology_assert();
+
+ if (sc == NULL)
+ return (ENXIO);
+
+ pp = sc->sc_provider;
+ if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) {
+ if (force) {
+ G_VENTOY_DEBUG(0, "Device %s is still open, so it "
+ "can't be definitely removed.", pp->name);
+ } else {
+ G_VENTOY_DEBUG(1,
+ "Device %s is still open (r%dw%de%d).", pp->name,
+ pp->acr, pp->acw, pp->ace);
+ return (EBUSY);
+ }
+ }
+
+ gp = sc->sc_geom;
+ LIST_FOREACH_SAFE(cp, &gp->consumer, consumer, cp1) {
+ g_ventoy_remove_disk(cp->private);
+ if (cp1 == NULL)
+ return (0); /* Recursion happened. */
+ }
+ if (!LIST_EMPTY(&gp->consumer))
+ return (EINPROGRESS);
+
+ gp->softc = NULL;
+ KASSERT(sc->sc_provider == NULL, ("Provider still exists? (device=%s)",
+ gp->name));
+ free(sc->sc_disks, M_VENTOY);
+ free(sc, M_VENTOY);
+
+ G_VENTOY_DEBUG(0, "Device %s destroyed.", gp->name);
+ g_wither_geom(gp, ENXIO);
+ return (0);
+}
+
+static int
+g_ventoy_destroy_geom(struct gctl_req *req __unused,
+ struct g_class *mp __unused, struct g_geom *gp)
+{
+ struct g_ventoy_softc *sc;
+
+ sc = gp->softc;
+ return (g_ventoy_destroy(sc, 0));
+}
+
+static bool g_vtoy_check_disk(struct g_class *mp, struct g_provider *pp)
+{
+ int i;
+ uint8_t *buf;
+ char uuid[64];
+ const char *value;
+ struct g_consumer *cp;
+ struct g_geom *gp;
+
+ if (g_ventoy_disk_size == 0)
+ {
+ if (resource_string_value("ventoy", 0, "disksize", &value) == 0)
+ {
+ G_DEBUG("ventoy.disksize: %s\n", value);
+ g_ventoy_disk_size = strtouq(value, NULL, 0);
+ }
+
+ if (resource_string_value("ventoy", 0, "diskuuid", &g_ventoy_disk_uuid) == 0)
+ {
+ G_DEBUG("ventoy.diskuuid: <%s>\n", g_ventoy_disk_uuid);
+ }
+ }
+
+ if (g_ventoy_disk_size != pp->mediasize)
+ {
+ return false;
+ }
+
+ if (strncmp(pp->name, "cd", 2) == 0 || strchr(pp->name, '/'))
+ {
+ return false;
+ }
+
+ /* read UUID from disk */
+ gp = g_new_geomf(mp, "ventoy:taste");
+ gp->start = NULL;
+ gp->access = g_ventoy_access;
+ gp->orphan = g_ventoy_orphan;
+ cp = g_new_consumer(gp);
+ g_attach(cp, pp);
+
+ g_access(cp, 1, 0, 0);
+ g_topology_unlock();
+ buf = g_read_data(cp, 0, pp->sectorsize, NULL);
+ g_topology_lock();
+ g_access(cp, -1, 0, 0);
+
+ g_detach(cp);
+ g_destroy_consumer(cp);
+ g_destroy_geom(gp);
+ gp = NULL;
+
+ if (!buf)
+ {
+ return false;
+ }
+
+ for (i = 0; i < 16; i++)
+ {
+ sprintf(uuid + i * 2, "%02x", buf[0x180 + i]);
+ }
+ g_free(buf);
+
+ if (strncmp(g_ventoy_disk_uuid, uuid, 32) == 0)
+ {
+ return true;
+ }
+
+ return false;
+}
+
+static struct g_geom *
+g_ventoy_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
+{
+ int i;
+ int error;
+ int disknum;
+ char *endpos;
+ const char *value;
+ struct g_geom *gp;
+ struct g_ventoy_metadata md;
+ struct g_ventoy_softc *sc;
+
+ if (g_ventoy_tasted)
+ {
+ return NULL;
+ }
+
+ G_DEBUG("%s(%s, %s)\n", __func__, mp->name, pp->name);
+ g_topology_assert();
+
+ /* Skip providers that are already open for writing. */
+ if (pp->acw > 0)
+ return (NULL);
+
+ if (!g_vtoy_check_disk(mp, pp))
+ {
+ return NULL;
+ }
+
+ g_ventoy_tasted = true;
+
+ G_DEBUG("######### ventoy disk <%s> #############\n", pp->name);
+
+ resource_int_value("ventoy", 0, "segnum", &disknum);
+
+ strlcpy(md.md_magic, G_VENTOY_MAGIC, sizeof(md.md_magic));
+ md.md_version = G_VENTOY_VERSION;
+ strlcpy(md.md_name, "IMAGE", sizeof(md.md_name));
+ md.md_id = arc4random();
+ md.md_no = 0;
+ md.md_all = (uint16_t)disknum;
+ bzero(md.md_provider, sizeof(md.md_provider));
+ /* This field is not important here. */
+ md.md_provsize = 0;
+
+ gp = g_ventoy_create(mp, &md, G_VENTOY_TYPE_MANUAL);
+ if (gp == NULL) {
+ G_VENTOY_DEBUG(0, "Cannot create device %s.",
+ md.md_name);
+ return (NULL);
+ }
+ sc = gp->softc;
+
+ for (i = 0; i < disknum; i ++)
+ {
+ if (resource_string_value("ventoy", i, "seg", &value) == 0)
+ {
+ g_disk_map_start = strtouq(value, &endpos, 0);
+ g_disk_map_end = strtouq(endpos + 1, NULL, 0);
+ }
+ else
+ {
+ printf("Failed to parse ventoy seg %d\n", i);
+ continue;
+ }
+
+ G_DEBUG("ventoy segment%d: %s\n", i, value);
+
+ G_VENTOY_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name);
+ error = g_ventoy_add_disk(sc, pp, i);
+ if (error != 0) {
+ G_VENTOY_DEBUG(0,
+ "Cannot add disk %s to %s (error=%d).", pp->name,
+ gp->name, error);
+ g_ventoy_destroy(sc, 1);
+ return (NULL);
+ }
+
+ g_disk_map_start = 0;
+ g_disk_map_end = 0;
+ }
+
+ return (gp);
+}
+
+static void
+g_ventoy_ctl_create(struct gctl_req *req, struct g_class *mp)
+{
+ u_int attached, no;
+ struct g_ventoy_metadata md;
+ struct g_provider *pp;
+ struct g_ventoy_softc *sc;
+ struct g_geom *gp;
+ struct sbuf *sb;
+ const char *name;
+ char param[16];
+ int *nargs;
+
+ g_topology_assert();
+ nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
+ if (nargs == NULL) {
+ gctl_error(req, "No '%s' argument.", "nargs");
+ return;
+ }
+ if (*nargs < 2) {
+ gctl_error(req, "Too few arguments.");
+ return;
+ }
+
+ strlcpy(md.md_magic, G_VENTOY_MAGIC, sizeof(md.md_magic));
+ md.md_version = G_VENTOY_VERSION;
+ name = gctl_get_asciiparam(req, "arg0");
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%u' argument.", 0);
+ return;
+ }
+ strlcpy(md.md_name, name, sizeof(md.md_name));
+ md.md_id = arc4random();
+ md.md_no = 0;
+ md.md_all = *nargs - 1;
+ bzero(md.md_provider, sizeof(md.md_provider));
+ /* This field is not important here. */
+ md.md_provsize = 0;
+
+ /* Check all providers are valid */
+ for (no = 1; no < *nargs; no++) {
+ snprintf(param, sizeof(param), "arg%u", no);
+ name = gctl_get_asciiparam(req, param);
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%u' argument.", no);
+ return;
+ }
+ if (strncmp(name, "/dev/", strlen("/dev/")) == 0)
+ name += strlen("/dev/");
+ pp = g_provider_by_name(name);
+ if (pp == NULL) {
+ G_VENTOY_DEBUG(1, "Disk %s is invalid.", name);
+ gctl_error(req, "Disk %s is invalid.", name);
+ return;
+ }
+ }
+
+ gp = g_ventoy_create(mp, &md, G_VENTOY_TYPE_MANUAL);
+ if (gp == NULL) {
+ gctl_error(req, "Can't configure %s.", md.md_name);
+ return;
+ }
+
+ sc = gp->softc;
+ sb = sbuf_new_auto();
+ sbuf_printf(sb, "Can't attach disk(s) to %s:", gp->name);
+ for (attached = 0, no = 1; no < *nargs; no++) {
+ snprintf(param, sizeof(param), "arg%u", no);
+ name = gctl_get_asciiparam(req, param);
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%d' argument.", no);
+ return;
+ }
+ if (strncmp(name, "/dev/", strlen("/dev/")) == 0)
+ name += strlen("/dev/");
+ pp = g_provider_by_name(name);
+ KASSERT(pp != NULL, ("Provider %s disappear?!", name));
+ if (g_ventoy_add_disk(sc, pp, no - 1) != 0) {
+ G_VENTOY_DEBUG(1, "Disk %u (%s) not attached to %s.",
+ no, pp->name, gp->name);
+ sbuf_printf(sb, " %s", pp->name);
+ continue;
+ }
+ attached++;
+ }
+ sbuf_finish(sb);
+ if (md.md_all != attached) {
+ g_ventoy_destroy(gp->softc, 1);
+ gctl_error(req, "%s", sbuf_data(sb));
+ }
+ sbuf_delete(sb);
+}
+
+static struct g_ventoy_softc *
+g_ventoy_find_device(struct g_class *mp, const char *name)
+{
+ struct g_ventoy_softc *sc;
+ struct g_geom *gp;
+
+ LIST_FOREACH(gp, &mp->geom, geom) {
+ sc = gp->softc;
+ if (sc == NULL)
+ continue;
+ if (strcmp(sc->sc_name, name) == 0)
+ return (sc);
+ }
+ return (NULL);
+}
+
+static void
+g_ventoy_ctl_destroy(struct gctl_req *req, struct g_class *mp)
+{
+ struct g_ventoy_softc *sc;
+ int *force, *nargs, error;
+ const char *name;
+ char param[16];
+ u_int i;
+
+ g_topology_assert();
+
+ nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
+ if (nargs == NULL) {
+ gctl_error(req, "No '%s' argument.", "nargs");
+ return;
+ }
+ if (*nargs <= 0) {
+ gctl_error(req, "Missing device(s).");
+ return;
+ }
+ force = gctl_get_paraml(req, "force", sizeof(*force));
+ if (force == NULL) {
+ gctl_error(req, "No '%s' argument.", "force");
+ return;
+ }
+
+ for (i = 0; i < (u_int)*nargs; i++) {
+ snprintf(param, sizeof(param), "arg%u", i);
+ name = gctl_get_asciiparam(req, param);
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%u' argument.", i);
+ return;
+ }
+ sc = g_ventoy_find_device(mp, name);
+ if (sc == NULL) {
+ gctl_error(req, "No such device: %s.", name);
+ return;
+ }
+ error = g_ventoy_destroy(sc, *force);
+ if (error != 0) {
+ gctl_error(req, "Cannot destroy device %s (error=%d).",
+ sc->sc_name, error);
+ return;
+ }
+ }
+}
+
+static void
+g_ventoy_config(struct gctl_req *req, struct g_class *mp, const char *verb)
+{
+ uint32_t *version;
+
+ return;
+
+ g_topology_assert();
+
+ version = gctl_get_paraml(req, "version", sizeof(*version));
+ if (version == NULL) {
+ gctl_error(req, "No '%s' argument.", "version");
+ return;
+ }
+ if (*version != G_VENTOY_VERSION) {
+ gctl_error(req, "Userland and kernel parts are out of sync.");
+ return;
+ }
+
+ if (strcmp(verb, "create") == 0) {
+ g_ventoy_ctl_create(req, mp);
+ return;
+ } else if (strcmp(verb, "destroy") == 0 ||
+ strcmp(verb, "stop") == 0) {
+ g_ventoy_ctl_destroy(req, mp);
+ return;
+ }
+ gctl_error(req, "Unknown verb.");
+}
+
+static void
+g_ventoy_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
+ struct g_consumer *cp, struct g_provider *pp)
+{
+ struct g_ventoy_softc *sc;
+
+ g_topology_assert();
+ sc = gp->softc;
+ if (sc == NULL)
+ return;
+ if (pp != NULL) {
+ /* Nothing here. */
+ } else if (cp != NULL) {
+ struct g_ventoy_disk *disk;
+
+ disk = cp->private;
+ if (disk == NULL)
+ return;
+ sbuf_printf(sb, "%s<End>%jd</End>\n", indent,
+ (intmax_t)disk->d_end);
+ sbuf_printf(sb, "%s<Start>%jd</Start>\n", indent,
+ (intmax_t)disk->d_start);
+ } else {
+ sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id);
+ sbuf_printf(sb, "%s<Type>", indent);
+ switch (sc->sc_type) {
+ case G_VENTOY_TYPE_AUTOMATIC:
+ sbuf_cat(sb, "AUTOMATIC");
+ break;
+ case G_VENTOY_TYPE_MANUAL:
+ sbuf_cat(sb, "MANUAL");
+ break;
+ default:
+ sbuf_cat(sb, "UNKNOWN");
+ break;
+ }
+ sbuf_cat(sb, "</Type>\n");
+ sbuf_printf(sb, "%s<Status>Total=%u, Online=%u</Status>\n",
+ indent, sc->sc_ndisks, g_ventoy_nvalid(sc));
+ sbuf_printf(sb, "%s<State>", indent);
+ if (sc->sc_provider != NULL && sc->sc_provider->error == 0)
+ sbuf_cat(sb, "UP");
+ else
+ sbuf_cat(sb, "DOWN");
+ sbuf_cat(sb, "</State>\n");
+ }
+}
+
+DECLARE_GEOM_CLASS(g_ventoy_class, g_ventoy);
--- /dev/null
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 longpanda <admin@ventoy.net>
+ * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _G_VENTOY_H_
+#define _G_VENTOY_H_
+
+#include <sys/endian.h>
+
+#define G_VENTOY_CLASS_NAME "VENTOY"
+
+#define G_VENTOY_MAGIC "GEOM::VENTOY"
+/*
+ * Version history:
+ * 1 - Initial version number.
+ * 2 - Added 'stop' command to gconcat(8).
+ * 3 - Added md_provider field to metadata and '-h' option to gconcat(8).
+ * 4 - Added md_provsize field to metadata.
+ */
+#define G_VENTOY_VERSION 4
+
+#ifdef _KERNEL
+#define G_VENTOY_TYPE_MANUAL 0
+#define G_VENTOY_TYPE_AUTOMATIC 1
+
+#define G_DEBUG(...) if (bootverbose) printf(__VA_ARGS__)
+#define G_VENTOY_DEBUG(lvl, ...) if (g_ventoy_debug) printf(__VA_ARGS__)
+#define G_VENTOY_LOGREQ(bp, ...) if (g_ventoy_debug) printf(__VA_ARGS__)
+
+struct g_ventoy_disk {
+ struct g_consumer *d_consumer;
+ struct g_ventoy_softc *d_softc;
+ off_t d_start;
+ off_t d_end;
+ off_t d_map_start;
+ off_t d_map_end;
+ int d_candelete;
+ int d_removed;
+};
+
+struct g_ventoy_softc {
+ u_int sc_type; /* provider type */
+ struct g_geom *sc_geom;
+ struct g_provider *sc_provider;
+ uint32_t sc_id; /* concat unique ID */
+
+ struct g_ventoy_disk *sc_disks;
+ uint16_t sc_ndisks;
+ struct mtx sc_lock;
+};
+#define sc_name sc_geom->name
+#endif /* _KERNEL */
+
+struct g_ventoy_metadata {
+ char md_magic[16]; /* Magic value. */
+ uint32_t md_version; /* Version number. */
+ char md_name[16]; /* Concat name. */
+ uint32_t md_id; /* Unique ID. */
+ uint16_t md_no; /* Disk number. */
+ uint16_t md_all; /* Number of all disks. */
+ char md_provider[16]; /* Hardcoded provider. */
+ uint64_t md_provsize; /* Provider's size. */
+};
+static __inline void
+ventoy_metadata_encode(const struct g_ventoy_metadata *md, u_char *data)
+{
+
+ bcopy(md->md_magic, data, sizeof(md->md_magic));
+ le32enc(data + 16, md->md_version);
+ bcopy(md->md_name, data + 20, sizeof(md->md_name));
+ le32enc(data + 36, md->md_id);
+ le16enc(data + 40, md->md_no);
+ le16enc(data + 42, md->md_all);
+ bcopy(md->md_provider, data + 44, sizeof(md->md_provider));
+ le64enc(data + 60, md->md_provsize);
+}
+static __inline void
+ventoy_metadata_decode(const u_char *data, struct g_ventoy_metadata *md)
+{
+
+ bcopy(data, md->md_magic, sizeof(md->md_magic));
+ md->md_version = le32dec(data + 16);
+ bcopy(data + 20, md->md_name, sizeof(md->md_name));
+ md->md_id = le32dec(data + 36);
+ md->md_no = le16dec(data + 40);
+ md->md_all = le16dec(data + 42);
+ bcopy(data + 44, md->md_provider, sizeof(md->md_provider));
+ md->md_provsize = le64dec(data + 60);
+}
+#endif /* _G_VENTOY_H_ */
--- /dev/null
+# $FreeBSD$
+
+.PATH: ${SRCTOP}/sys/geom/ventoy
+
+KMOD= geom_ventoy
+SRCS= g_ventoy.c
+
+.include <bsd.kmod.mk>
projects / Ventoy.git / commitdiff