73f49e9eef
partitions. Several utilities still use this interface and require additional information since gpart was activated than before. This allows fsck of a UFS partition without having to specify it is UFS, per historic behavior.
2334 lines
57 KiB
C
2334 lines
57 KiB
C
/*-
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* Copyright (c) 2002, 2005-2009 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bio.h>
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#include <sys/endian.h>
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#include <sys/kernel.h>
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#include <sys/kobj.h>
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#include <sys/limits.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/queue.h>
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#include <sys/sbuf.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <sys/uuid.h>
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#include <geom/geom.h>
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#include <geom/geom_ctl.h>
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#include <geom/geom_int.h>
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#include <geom/part/g_part.h>
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#include "g_part_if.h"
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#ifndef _PATH_DEV
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#define _PATH_DEV "/dev/"
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#endif
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static kobj_method_t g_part_null_methods[] = {
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{ 0, 0 }
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};
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static struct g_part_scheme g_part_null_scheme = {
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"(none)",
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g_part_null_methods,
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sizeof(struct g_part_table),
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};
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TAILQ_HEAD(, g_part_scheme) g_part_schemes =
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TAILQ_HEAD_INITIALIZER(g_part_schemes);
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struct g_part_alias_list {
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const char *lexeme;
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enum g_part_alias alias;
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} g_part_alias_list[G_PART_ALIAS_COUNT] = {
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{ "apple-boot", G_PART_ALIAS_APPLE_BOOT },
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{ "apple-hfs", G_PART_ALIAS_APPLE_HFS },
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{ "apple-label", G_PART_ALIAS_APPLE_LABEL },
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{ "apple-raid", G_PART_ALIAS_APPLE_RAID },
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{ "apple-raid-offline", G_PART_ALIAS_APPLE_RAID_OFFLINE },
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{ "apple-tv-recovery", G_PART_ALIAS_APPLE_TV_RECOVERY },
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{ "apple-ufs", G_PART_ALIAS_APPLE_UFS },
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{ "bios-boot", G_PART_ALIAS_BIOS_BOOT },
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{ "ebr", G_PART_ALIAS_EBR },
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{ "efi", G_PART_ALIAS_EFI },
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{ "fat16", G_PART_ALIAS_MS_FAT16 },
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{ "fat32", G_PART_ALIAS_MS_FAT32 },
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{ "freebsd", G_PART_ALIAS_FREEBSD },
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{ "freebsd-boot", G_PART_ALIAS_FREEBSD_BOOT },
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{ "freebsd-nandfs", G_PART_ALIAS_FREEBSD_NANDFS },
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{ "freebsd-swap", G_PART_ALIAS_FREEBSD_SWAP },
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{ "freebsd-ufs", G_PART_ALIAS_FREEBSD_UFS },
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{ "freebsd-vinum", G_PART_ALIAS_FREEBSD_VINUM },
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{ "freebsd-zfs", G_PART_ALIAS_FREEBSD_ZFS },
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{ "linux-data", G_PART_ALIAS_LINUX_DATA },
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{ "linux-lvm", G_PART_ALIAS_LINUX_LVM },
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{ "linux-raid", G_PART_ALIAS_LINUX_RAID },
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{ "linux-swap", G_PART_ALIAS_LINUX_SWAP },
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{ "mbr", G_PART_ALIAS_MBR },
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{ "ms-basic-data", G_PART_ALIAS_MS_BASIC_DATA },
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{ "ms-ldm-data", G_PART_ALIAS_MS_LDM_DATA },
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{ "ms-ldm-metadata", G_PART_ALIAS_MS_LDM_METADATA },
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{ "ms-reserved", G_PART_ALIAS_MS_RESERVED },
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{ "ntfs", G_PART_ALIAS_MS_NTFS },
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{ "netbsd-ccd", G_PART_ALIAS_NETBSD_CCD },
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{ "netbsd-cgd", G_PART_ALIAS_NETBSD_CGD },
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{ "netbsd-ffs", G_PART_ALIAS_NETBSD_FFS },
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{ "netbsd-lfs", G_PART_ALIAS_NETBSD_LFS },
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{ "netbsd-raid", G_PART_ALIAS_NETBSD_RAID },
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{ "netbsd-swap", G_PART_ALIAS_NETBSD_SWAP },
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{ "vmware-vmfs", G_PART_ALIAS_VMFS },
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{ "vmware-vmkdiag", G_PART_ALIAS_VMKDIAG },
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{ "vmware-reserved", G_PART_ALIAS_VMRESERVED },
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{ "vmware-vsanhdr", G_PART_ALIAS_VMVSANHDR },
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{ "dragonfly-label32", G_PART_ALIAS_DFBSD },
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{ "dragonfly-label64", G_PART_ALIAS_DFBSD64 },
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{ "dragonfly-swap", G_PART_ALIAS_DFBSD_SWAP },
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{ "dragonfly-ufs", G_PART_ALIAS_DFBSD_UFS },
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{ "dragonfly-vinum", G_PART_ALIAS_DFBSD_VINUM },
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{ "dragonfly-ccd", G_PART_ALIAS_DFBSD_CCD },
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{ "dragonfly-legacy", G_PART_ALIAS_DFBSD_LEGACY },
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{ "dragonfly-hammer", G_PART_ALIAS_DFBSD_HAMMER },
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{ "dragonfly-hammer2", G_PART_ALIAS_DFBSD_HAMMER2 },
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{ "prep-boot", G_PART_ALIAS_PREP_BOOT },
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};
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SYSCTL_DECL(_kern_geom);
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SYSCTL_NODE(_kern_geom, OID_AUTO, part, CTLFLAG_RW, 0,
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"GEOM_PART stuff");
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static u_int check_integrity = 1;
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SYSCTL_UINT(_kern_geom_part, OID_AUTO, check_integrity,
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CTLFLAG_RWTUN, &check_integrity, 1,
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"Enable integrity checking");
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/*
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* The GEOM partitioning class.
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*/
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static g_ctl_req_t g_part_ctlreq;
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static g_ctl_destroy_geom_t g_part_destroy_geom;
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static g_fini_t g_part_fini;
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static g_init_t g_part_init;
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static g_taste_t g_part_taste;
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static g_access_t g_part_access;
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static g_dumpconf_t g_part_dumpconf;
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static g_orphan_t g_part_orphan;
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static g_spoiled_t g_part_spoiled;
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static g_start_t g_part_start;
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static g_resize_t g_part_resize;
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static g_ioctl_t g_part_ioctl;
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static struct g_class g_part_class = {
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.name = "PART",
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.version = G_VERSION,
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/* Class methods. */
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.ctlreq = g_part_ctlreq,
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.destroy_geom = g_part_destroy_geom,
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.fini = g_part_fini,
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.init = g_part_init,
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.taste = g_part_taste,
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/* Geom methods. */
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.access = g_part_access,
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.dumpconf = g_part_dumpconf,
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.orphan = g_part_orphan,
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.spoiled = g_part_spoiled,
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.start = g_part_start,
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.resize = g_part_resize,
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.ioctl = g_part_ioctl,
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};
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DECLARE_GEOM_CLASS(g_part_class, g_part);
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MODULE_VERSION(g_part, 0);
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/*
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* Support functions.
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*/
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static void g_part_wither(struct g_geom *, int);
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const char *
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g_part_alias_name(enum g_part_alias alias)
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{
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int i;
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for (i = 0; i < G_PART_ALIAS_COUNT; i++) {
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if (g_part_alias_list[i].alias != alias)
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continue;
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return (g_part_alias_list[i].lexeme);
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}
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return (NULL);
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}
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void
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g_part_geometry_heads(off_t blocks, u_int sectors, off_t *bestchs,
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u_int *bestheads)
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{
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static u_int candidate_heads[] = { 1, 2, 16, 32, 64, 128, 255, 0 };
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off_t chs, cylinders;
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u_int heads;
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int idx;
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*bestchs = 0;
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*bestheads = 0;
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for (idx = 0; candidate_heads[idx] != 0; idx++) {
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heads = candidate_heads[idx];
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cylinders = blocks / heads / sectors;
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if (cylinders < heads || cylinders < sectors)
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break;
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if (cylinders > 1023)
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continue;
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chs = cylinders * heads * sectors;
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if (chs > *bestchs || (chs == *bestchs && *bestheads == 1)) {
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*bestchs = chs;
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*bestheads = heads;
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}
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}
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}
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static void
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g_part_geometry(struct g_part_table *table, struct g_consumer *cp,
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off_t blocks)
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{
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static u_int candidate_sectors[] = { 1, 9, 17, 33, 63, 0 };
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off_t chs, bestchs;
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u_int heads, sectors;
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int idx;
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if (g_getattr("GEOM::fwsectors", cp, §ors) != 0 || sectors == 0 ||
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g_getattr("GEOM::fwheads", cp, &heads) != 0 || heads == 0) {
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table->gpt_fixgeom = 0;
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table->gpt_heads = 0;
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table->gpt_sectors = 0;
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bestchs = 0;
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for (idx = 0; candidate_sectors[idx] != 0; idx++) {
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sectors = candidate_sectors[idx];
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g_part_geometry_heads(blocks, sectors, &chs, &heads);
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if (chs == 0)
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continue;
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/*
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* Prefer a geometry with sectors > 1, but only if
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* it doesn't bump down the number of heads to 1.
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*/
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if (chs > bestchs || (chs == bestchs && heads > 1 &&
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table->gpt_sectors == 1)) {
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bestchs = chs;
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table->gpt_heads = heads;
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table->gpt_sectors = sectors;
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}
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}
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/*
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* If we didn't find a geometry at all, then the disk is
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* too big. This means we can use the maximum number of
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* heads and sectors.
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*/
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if (bestchs == 0) {
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table->gpt_heads = 255;
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table->gpt_sectors = 63;
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}
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} else {
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table->gpt_fixgeom = 1;
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table->gpt_heads = heads;
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table->gpt_sectors = sectors;
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}
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}
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#define DPRINTF(...) if (bootverbose) { \
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printf("GEOM_PART: " __VA_ARGS__); \
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}
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static int
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g_part_check_integrity(struct g_part_table *table, struct g_consumer *cp)
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{
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struct g_part_entry *e1, *e2;
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struct g_provider *pp;
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off_t offset;
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int failed;
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failed = 0;
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pp = cp->provider;
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if (table->gpt_last < table->gpt_first) {
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DPRINTF("last LBA is below first LBA: %jd < %jd\n",
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(intmax_t)table->gpt_last, (intmax_t)table->gpt_first);
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failed++;
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}
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if (table->gpt_last > pp->mediasize / pp->sectorsize - 1) {
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DPRINTF("last LBA extends beyond mediasize: "
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"%jd > %jd\n", (intmax_t)table->gpt_last,
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(intmax_t)pp->mediasize / pp->sectorsize - 1);
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failed++;
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}
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LIST_FOREACH(e1, &table->gpt_entry, gpe_entry) {
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if (e1->gpe_deleted || e1->gpe_internal)
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continue;
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if (e1->gpe_start < table->gpt_first) {
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DPRINTF("partition %d has start offset below first "
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"LBA: %jd < %jd\n", e1->gpe_index,
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(intmax_t)e1->gpe_start,
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(intmax_t)table->gpt_first);
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failed++;
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}
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if (e1->gpe_start > table->gpt_last) {
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DPRINTF("partition %d has start offset beyond last "
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"LBA: %jd > %jd\n", e1->gpe_index,
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(intmax_t)e1->gpe_start,
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(intmax_t)table->gpt_last);
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failed++;
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}
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if (e1->gpe_end < e1->gpe_start) {
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DPRINTF("partition %d has end offset below start "
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"offset: %jd < %jd\n", e1->gpe_index,
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(intmax_t)e1->gpe_end,
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(intmax_t)e1->gpe_start);
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failed++;
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}
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if (e1->gpe_end > table->gpt_last) {
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DPRINTF("partition %d has end offset beyond last "
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"LBA: %jd > %jd\n", e1->gpe_index,
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(intmax_t)e1->gpe_end,
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(intmax_t)table->gpt_last);
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failed++;
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}
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if (pp->stripesize > 0) {
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offset = e1->gpe_start * pp->sectorsize;
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if (e1->gpe_offset > offset)
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offset = e1->gpe_offset;
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if ((offset + pp->stripeoffset) % pp->stripesize) {
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DPRINTF("partition %d is not aligned on %u "
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"bytes\n", e1->gpe_index, pp->stripesize);
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/* Don't treat this as a critical failure */
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}
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}
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e2 = e1;
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while ((e2 = LIST_NEXT(e2, gpe_entry)) != NULL) {
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if (e2->gpe_deleted || e2->gpe_internal)
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continue;
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if (e1->gpe_start >= e2->gpe_start &&
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e1->gpe_start <= e2->gpe_end) {
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DPRINTF("partition %d has start offset inside "
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"partition %d: start[%d] %jd >= start[%d] "
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"%jd <= end[%d] %jd\n",
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e1->gpe_index, e2->gpe_index,
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e2->gpe_index, (intmax_t)e2->gpe_start,
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e1->gpe_index, (intmax_t)e1->gpe_start,
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e2->gpe_index, (intmax_t)e2->gpe_end);
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failed++;
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}
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if (e1->gpe_end >= e2->gpe_start &&
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e1->gpe_end <= e2->gpe_end) {
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DPRINTF("partition %d has end offset inside "
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"partition %d: start[%d] %jd >= end[%d] "
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"%jd <= end[%d] %jd\n",
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e1->gpe_index, e2->gpe_index,
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e2->gpe_index, (intmax_t)e2->gpe_start,
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e1->gpe_index, (intmax_t)e1->gpe_end,
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e2->gpe_index, (intmax_t)e2->gpe_end);
|
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failed++;
|
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}
|
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if (e1->gpe_start < e2->gpe_start &&
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e1->gpe_end > e2->gpe_end) {
|
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DPRINTF("partition %d contains partition %d: "
|
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"start[%d] %jd > start[%d] %jd, end[%d] "
|
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"%jd < end[%d] %jd\n",
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e1->gpe_index, e2->gpe_index,
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e1->gpe_index, (intmax_t)e1->gpe_start,
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e2->gpe_index, (intmax_t)e2->gpe_start,
|
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e2->gpe_index, (intmax_t)e2->gpe_end,
|
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e1->gpe_index, (intmax_t)e1->gpe_end);
|
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failed++;
|
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}
|
|
}
|
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}
|
|
if (failed != 0) {
|
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printf("GEOM_PART: integrity check failed (%s, %s)\n",
|
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pp->name, table->gpt_scheme->name);
|
|
if (check_integrity != 0)
|
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return (EINVAL);
|
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table->gpt_corrupt = 1;
|
|
}
|
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return (0);
|
|
}
|
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#undef DPRINTF
|
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|
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struct g_part_entry *
|
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g_part_new_entry(struct g_part_table *table, int index, quad_t start,
|
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quad_t end)
|
|
{
|
|
struct g_part_entry *entry, *last;
|
|
|
|
last = NULL;
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (entry->gpe_index == index)
|
|
break;
|
|
if (entry->gpe_index > index) {
|
|
entry = NULL;
|
|
break;
|
|
}
|
|
last = entry;
|
|
}
|
|
if (entry == NULL) {
|
|
entry = g_malloc(table->gpt_scheme->gps_entrysz,
|
|
M_WAITOK | M_ZERO);
|
|
entry->gpe_index = index;
|
|
if (last == NULL)
|
|
LIST_INSERT_HEAD(&table->gpt_entry, entry, gpe_entry);
|
|
else
|
|
LIST_INSERT_AFTER(last, entry, gpe_entry);
|
|
} else
|
|
entry->gpe_offset = 0;
|
|
entry->gpe_start = start;
|
|
entry->gpe_end = end;
|
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return (entry);
|
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}
|
|
|
|
static void
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g_part_new_provider(struct g_geom *gp, struct g_part_table *table,
|
|
struct g_part_entry *entry)
|
|
{
|
|
struct g_consumer *cp;
|
|
struct g_provider *pp;
|
|
struct sbuf *sb;
|
|
off_t offset;
|
|
|
|
cp = LIST_FIRST(&gp->consumer);
|
|
pp = cp->provider;
|
|
|
|
offset = entry->gpe_start * pp->sectorsize;
|
|
if (entry->gpe_offset < offset)
|
|
entry->gpe_offset = offset;
|
|
|
|
if (entry->gpe_pp == NULL) {
|
|
sb = sbuf_new_auto();
|
|
G_PART_FULLNAME(table, entry, sb, gp->name);
|
|
sbuf_finish(sb);
|
|
entry->gpe_pp = g_new_providerf(gp, "%s", sbuf_data(sb));
|
|
sbuf_delete(sb);
|
|
entry->gpe_pp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE;
|
|
entry->gpe_pp->private = entry; /* Close the circle. */
|
|
}
|
|
entry->gpe_pp->index = entry->gpe_index - 1; /* index is 1-based. */
|
|
entry->gpe_pp->mediasize = (entry->gpe_end - entry->gpe_start + 1) *
|
|
pp->sectorsize;
|
|
entry->gpe_pp->mediasize -= entry->gpe_offset - offset;
|
|
entry->gpe_pp->sectorsize = pp->sectorsize;
|
|
entry->gpe_pp->stripesize = pp->stripesize;
|
|
entry->gpe_pp->stripeoffset = pp->stripeoffset + entry->gpe_offset;
|
|
if (pp->stripesize > 0)
|
|
entry->gpe_pp->stripeoffset %= pp->stripesize;
|
|
entry->gpe_pp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED;
|
|
g_error_provider(entry->gpe_pp, 0);
|
|
}
|
|
|
|
static struct g_geom*
|
|
g_part_find_geom(const char *name)
|
|
{
|
|
struct g_geom *gp;
|
|
LIST_FOREACH(gp, &g_part_class.geom, geom) {
|
|
if (!strcmp(name, gp->name))
|
|
break;
|
|
}
|
|
return (gp);
|
|
}
|
|
|
|
static int
|
|
g_part_parm_geom(struct gctl_req *req, const char *name, struct g_geom **v)
|
|
{
|
|
struct g_geom *gp;
|
|
const char *gname;
|
|
|
|
gname = gctl_get_asciiparam(req, name);
|
|
if (gname == NULL)
|
|
return (ENOATTR);
|
|
if (strncmp(gname, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
|
|
gname += sizeof(_PATH_DEV) - 1;
|
|
gp = g_part_find_geom(gname);
|
|
if (gp == NULL) {
|
|
gctl_error(req, "%d %s '%s'", EINVAL, name, gname);
|
|
return (EINVAL);
|
|
}
|
|
if ((gp->flags & G_GEOM_WITHER) != 0) {
|
|
gctl_error(req, "%d %s", ENXIO, gname);
|
|
return (ENXIO);
|
|
}
|
|
*v = gp;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_parm_provider(struct gctl_req *req, const char *name,
|
|
struct g_provider **v)
|
|
{
|
|
struct g_provider *pp;
|
|
const char *pname;
|
|
|
|
pname = gctl_get_asciiparam(req, name);
|
|
if (pname == NULL)
|
|
return (ENOATTR);
|
|
if (strncmp(pname, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
|
|
pname += sizeof(_PATH_DEV) - 1;
|
|
pp = g_provider_by_name(pname);
|
|
if (pp == NULL) {
|
|
gctl_error(req, "%d %s '%s'", EINVAL, name, pname);
|
|
return (EINVAL);
|
|
}
|
|
*v = pp;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_parm_quad(struct gctl_req *req, const char *name, quad_t *v)
|
|
{
|
|
const char *p;
|
|
char *x;
|
|
quad_t q;
|
|
|
|
p = gctl_get_asciiparam(req, name);
|
|
if (p == NULL)
|
|
return (ENOATTR);
|
|
q = strtoq(p, &x, 0);
|
|
if (*x != '\0' || q < 0) {
|
|
gctl_error(req, "%d %s '%s'", EINVAL, name, p);
|
|
return (EINVAL);
|
|
}
|
|
*v = q;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_parm_scheme(struct gctl_req *req, const char *name,
|
|
struct g_part_scheme **v)
|
|
{
|
|
struct g_part_scheme *s;
|
|
const char *p;
|
|
|
|
p = gctl_get_asciiparam(req, name);
|
|
if (p == NULL)
|
|
return (ENOATTR);
|
|
TAILQ_FOREACH(s, &g_part_schemes, scheme_list) {
|
|
if (s == &g_part_null_scheme)
|
|
continue;
|
|
if (!strcasecmp(s->name, p))
|
|
break;
|
|
}
|
|
if (s == NULL) {
|
|
gctl_error(req, "%d %s '%s'", EINVAL, name, p);
|
|
return (EINVAL);
|
|
}
|
|
*v = s;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_parm_str(struct gctl_req *req, const char *name, const char **v)
|
|
{
|
|
const char *p;
|
|
|
|
p = gctl_get_asciiparam(req, name);
|
|
if (p == NULL)
|
|
return (ENOATTR);
|
|
/* An empty label is always valid. */
|
|
if (strcmp(name, "label") != 0 && p[0] == '\0') {
|
|
gctl_error(req, "%d %s '%s'", EINVAL, name, p);
|
|
return (EINVAL);
|
|
}
|
|
*v = p;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_parm_intmax(struct gctl_req *req, const char *name, u_int *v)
|
|
{
|
|
const intmax_t *p;
|
|
int size;
|
|
|
|
p = gctl_get_param(req, name, &size);
|
|
if (p == NULL)
|
|
return (ENOATTR);
|
|
if (size != sizeof(*p) || *p < 0 || *p > INT_MAX) {
|
|
gctl_error(req, "%d %s '%jd'", EINVAL, name, *p);
|
|
return (EINVAL);
|
|
}
|
|
*v = (u_int)*p;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_parm_uint32(struct gctl_req *req, const char *name, u_int *v)
|
|
{
|
|
const uint32_t *p;
|
|
int size;
|
|
|
|
p = gctl_get_param(req, name, &size);
|
|
if (p == NULL)
|
|
return (ENOATTR);
|
|
if (size != sizeof(*p) || *p > INT_MAX) {
|
|
gctl_error(req, "%d %s '%u'", EINVAL, name, (unsigned int)*p);
|
|
return (EINVAL);
|
|
}
|
|
*v = (u_int)*p;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_parm_bootcode(struct gctl_req *req, const char *name, const void **v,
|
|
unsigned int *s)
|
|
{
|
|
const void *p;
|
|
int size;
|
|
|
|
p = gctl_get_param(req, name, &size);
|
|
if (p == NULL)
|
|
return (ENOATTR);
|
|
*v = p;
|
|
*s = size;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_probe(struct g_geom *gp, struct g_consumer *cp, int depth)
|
|
{
|
|
struct g_part_scheme *iter, *scheme;
|
|
struct g_part_table *table;
|
|
int pri, probe;
|
|
|
|
table = gp->softc;
|
|
scheme = (table != NULL) ? table->gpt_scheme : NULL;
|
|
pri = (scheme != NULL) ? G_PART_PROBE(table, cp) : INT_MIN;
|
|
if (pri == 0)
|
|
goto done;
|
|
if (pri > 0) { /* error */
|
|
scheme = NULL;
|
|
pri = INT_MIN;
|
|
}
|
|
|
|
TAILQ_FOREACH(iter, &g_part_schemes, scheme_list) {
|
|
if (iter == &g_part_null_scheme)
|
|
continue;
|
|
table = (void *)kobj_create((kobj_class_t)iter, M_GEOM,
|
|
M_WAITOK);
|
|
table->gpt_gp = gp;
|
|
table->gpt_scheme = iter;
|
|
table->gpt_depth = depth;
|
|
probe = G_PART_PROBE(table, cp);
|
|
if (probe <= 0 && probe > pri) {
|
|
pri = probe;
|
|
scheme = iter;
|
|
if (gp->softc != NULL)
|
|
kobj_delete((kobj_t)gp->softc, M_GEOM);
|
|
gp->softc = table;
|
|
if (pri == 0)
|
|
goto done;
|
|
} else
|
|
kobj_delete((kobj_t)table, M_GEOM);
|
|
}
|
|
|
|
done:
|
|
return ((scheme == NULL) ? ENXIO : 0);
|
|
}
|
|
|
|
/*
|
|
* Control request functions.
|
|
*/
|
|
|
|
static int
|
|
g_part_ctl_add(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_geom *gp;
|
|
struct g_provider *pp;
|
|
struct g_part_entry *delent, *last, *entry;
|
|
struct g_part_table *table;
|
|
struct sbuf *sb;
|
|
quad_t end;
|
|
unsigned int index;
|
|
int error;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
|
|
pp = LIST_FIRST(&gp->consumer)->provider;
|
|
table = gp->softc;
|
|
end = gpp->gpp_start + gpp->gpp_size - 1;
|
|
|
|
if (gpp->gpp_start < table->gpt_first ||
|
|
gpp->gpp_start > table->gpt_last) {
|
|
gctl_error(req, "%d start '%jd'", EINVAL,
|
|
(intmax_t)gpp->gpp_start);
|
|
return (EINVAL);
|
|
}
|
|
if (end < gpp->gpp_start || end > table->gpt_last) {
|
|
gctl_error(req, "%d size '%jd'", EINVAL,
|
|
(intmax_t)gpp->gpp_size);
|
|
return (EINVAL);
|
|
}
|
|
if (gpp->gpp_index > table->gpt_entries) {
|
|
gctl_error(req, "%d index '%d'", EINVAL, gpp->gpp_index);
|
|
return (EINVAL);
|
|
}
|
|
|
|
delent = last = NULL;
|
|
index = (gpp->gpp_index > 0) ? gpp->gpp_index : 1;
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (entry->gpe_deleted) {
|
|
if (entry->gpe_index == index)
|
|
delent = entry;
|
|
continue;
|
|
}
|
|
if (entry->gpe_index == index)
|
|
index = entry->gpe_index + 1;
|
|
if (entry->gpe_index < index)
|
|
last = entry;
|
|
if (entry->gpe_internal)
|
|
continue;
|
|
if (gpp->gpp_start >= entry->gpe_start &&
|
|
gpp->gpp_start <= entry->gpe_end) {
|
|
gctl_error(req, "%d start '%jd'", ENOSPC,
|
|
(intmax_t)gpp->gpp_start);
|
|
return (ENOSPC);
|
|
}
|
|
if (end >= entry->gpe_start && end <= entry->gpe_end) {
|
|
gctl_error(req, "%d end '%jd'", ENOSPC, (intmax_t)end);
|
|
return (ENOSPC);
|
|
}
|
|
if (gpp->gpp_start < entry->gpe_start && end > entry->gpe_end) {
|
|
gctl_error(req, "%d size '%jd'", ENOSPC,
|
|
(intmax_t)gpp->gpp_size);
|
|
return (ENOSPC);
|
|
}
|
|
}
|
|
if (gpp->gpp_index > 0 && index != gpp->gpp_index) {
|
|
gctl_error(req, "%d index '%d'", EEXIST, gpp->gpp_index);
|
|
return (EEXIST);
|
|
}
|
|
if (index > table->gpt_entries) {
|
|
gctl_error(req, "%d index '%d'", ENOSPC, index);
|
|
return (ENOSPC);
|
|
}
|
|
|
|
entry = (delent == NULL) ? g_malloc(table->gpt_scheme->gps_entrysz,
|
|
M_WAITOK | M_ZERO) : delent;
|
|
entry->gpe_index = index;
|
|
entry->gpe_start = gpp->gpp_start;
|
|
entry->gpe_end = end;
|
|
error = G_PART_ADD(table, entry, gpp);
|
|
if (error) {
|
|
gctl_error(req, "%d", error);
|
|
if (delent == NULL)
|
|
g_free(entry);
|
|
return (error);
|
|
}
|
|
if (delent == NULL) {
|
|
if (last == NULL)
|
|
LIST_INSERT_HEAD(&table->gpt_entry, entry, gpe_entry);
|
|
else
|
|
LIST_INSERT_AFTER(last, entry, gpe_entry);
|
|
entry->gpe_created = 1;
|
|
} else {
|
|
entry->gpe_deleted = 0;
|
|
entry->gpe_modified = 1;
|
|
}
|
|
g_part_new_provider(gp, table, entry);
|
|
|
|
/* Provide feedback if so requested. */
|
|
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
|
sb = sbuf_new_auto();
|
|
G_PART_FULLNAME(table, entry, sb, gp->name);
|
|
if (pp->stripesize > 0 && entry->gpe_pp->stripeoffset != 0)
|
|
sbuf_printf(sb, " added, but partition is not "
|
|
"aligned on %u bytes\n", pp->stripesize);
|
|
else
|
|
sbuf_cat(sb, " added\n");
|
|
sbuf_finish(sb);
|
|
gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1);
|
|
sbuf_delete(sb);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_bootcode(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_geom *gp;
|
|
struct g_part_table *table;
|
|
struct sbuf *sb;
|
|
int error, sz;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
|
|
table = gp->softc;
|
|
sz = table->gpt_scheme->gps_bootcodesz;
|
|
if (sz == 0) {
|
|
error = ENODEV;
|
|
goto fail;
|
|
}
|
|
if (gpp->gpp_codesize > sz) {
|
|
error = EFBIG;
|
|
goto fail;
|
|
}
|
|
|
|
error = G_PART_BOOTCODE(table, gpp);
|
|
if (error)
|
|
goto fail;
|
|
|
|
/* Provide feedback if so requested. */
|
|
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
|
sb = sbuf_new_auto();
|
|
sbuf_printf(sb, "bootcode written to %s\n", gp->name);
|
|
sbuf_finish(sb);
|
|
gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1);
|
|
sbuf_delete(sb);
|
|
}
|
|
return (0);
|
|
|
|
fail:
|
|
gctl_error(req, "%d", error);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_commit(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_consumer *cp;
|
|
struct g_geom *gp;
|
|
struct g_provider *pp;
|
|
struct g_part_entry *entry, *tmp;
|
|
struct g_part_table *table;
|
|
char *buf;
|
|
int error, i;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
|
|
table = gp->softc;
|
|
if (!table->gpt_opened) {
|
|
gctl_error(req, "%d", EPERM);
|
|
return (EPERM);
|
|
}
|
|
|
|
g_topology_unlock();
|
|
|
|
cp = LIST_FIRST(&gp->consumer);
|
|
if ((table->gpt_smhead | table->gpt_smtail) != 0) {
|
|
pp = cp->provider;
|
|
buf = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO);
|
|
while (table->gpt_smhead != 0) {
|
|
i = ffs(table->gpt_smhead) - 1;
|
|
error = g_write_data(cp, i * pp->sectorsize, buf,
|
|
pp->sectorsize);
|
|
if (error) {
|
|
g_free(buf);
|
|
goto fail;
|
|
}
|
|
table->gpt_smhead &= ~(1 << i);
|
|
}
|
|
while (table->gpt_smtail != 0) {
|
|
i = ffs(table->gpt_smtail) - 1;
|
|
error = g_write_data(cp, pp->mediasize - (i + 1) *
|
|
pp->sectorsize, buf, pp->sectorsize);
|
|
if (error) {
|
|
g_free(buf);
|
|
goto fail;
|
|
}
|
|
table->gpt_smtail &= ~(1 << i);
|
|
}
|
|
g_free(buf);
|
|
}
|
|
|
|
if (table->gpt_scheme == &g_part_null_scheme) {
|
|
g_topology_lock();
|
|
g_access(cp, -1, -1, -1);
|
|
g_part_wither(gp, ENXIO);
|
|
return (0);
|
|
}
|
|
|
|
error = G_PART_WRITE(table, cp);
|
|
if (error)
|
|
goto fail;
|
|
|
|
LIST_FOREACH_SAFE(entry, &table->gpt_entry, gpe_entry, tmp) {
|
|
if (!entry->gpe_deleted) {
|
|
entry->gpe_created = 0;
|
|
entry->gpe_modified = 0;
|
|
continue;
|
|
}
|
|
LIST_REMOVE(entry, gpe_entry);
|
|
g_free(entry);
|
|
}
|
|
table->gpt_created = 0;
|
|
table->gpt_opened = 0;
|
|
|
|
g_topology_lock();
|
|
g_access(cp, -1, -1, -1);
|
|
return (0);
|
|
|
|
fail:
|
|
g_topology_lock();
|
|
gctl_error(req, "%d", error);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_create(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_consumer *cp;
|
|
struct g_geom *gp;
|
|
struct g_provider *pp;
|
|
struct g_part_scheme *scheme;
|
|
struct g_part_table *null, *table;
|
|
struct sbuf *sb;
|
|
int attr, error;
|
|
|
|
pp = gpp->gpp_provider;
|
|
scheme = gpp->gpp_scheme;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, pp->name));
|
|
g_topology_assert();
|
|
|
|
/* Check that there isn't already a g_part geom on the provider. */
|
|
gp = g_part_find_geom(pp->name);
|
|
if (gp != NULL) {
|
|
null = gp->softc;
|
|
if (null->gpt_scheme != &g_part_null_scheme) {
|
|
gctl_error(req, "%d geom '%s'", EEXIST, pp->name);
|
|
return (EEXIST);
|
|
}
|
|
} else
|
|
null = NULL;
|
|
|
|
if ((gpp->gpp_parms & G_PART_PARM_ENTRIES) &&
|
|
(gpp->gpp_entries < scheme->gps_minent ||
|
|
gpp->gpp_entries > scheme->gps_maxent)) {
|
|
gctl_error(req, "%d entries '%d'", EINVAL, gpp->gpp_entries);
|
|
return (EINVAL);
|
|
}
|
|
|
|
if (null == NULL)
|
|
gp = g_new_geomf(&g_part_class, "%s", pp->name);
|
|
gp->softc = kobj_create((kobj_class_t)gpp->gpp_scheme, M_GEOM,
|
|
M_WAITOK);
|
|
table = gp->softc;
|
|
table->gpt_gp = gp;
|
|
table->gpt_scheme = gpp->gpp_scheme;
|
|
table->gpt_entries = (gpp->gpp_parms & G_PART_PARM_ENTRIES) ?
|
|
gpp->gpp_entries : scheme->gps_minent;
|
|
LIST_INIT(&table->gpt_entry);
|
|
if (null == NULL) {
|
|
cp = g_new_consumer(gp);
|
|
cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE;
|
|
error = g_attach(cp, pp);
|
|
if (error == 0)
|
|
error = g_access(cp, 1, 1, 1);
|
|
if (error != 0) {
|
|
g_part_wither(gp, error);
|
|
gctl_error(req, "%d geom '%s'", error, pp->name);
|
|
return (error);
|
|
}
|
|
table->gpt_opened = 1;
|
|
} else {
|
|
cp = LIST_FIRST(&gp->consumer);
|
|
table->gpt_opened = null->gpt_opened;
|
|
table->gpt_smhead = null->gpt_smhead;
|
|
table->gpt_smtail = null->gpt_smtail;
|
|
}
|
|
|
|
g_topology_unlock();
|
|
|
|
/* Make sure the provider has media. */
|
|
if (pp->mediasize == 0 || pp->sectorsize == 0) {
|
|
error = ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
/* Make sure we can nest and if so, determine our depth. */
|
|
error = g_getattr("PART::isleaf", cp, &attr);
|
|
if (!error && attr) {
|
|
error = ENODEV;
|
|
goto fail;
|
|
}
|
|
error = g_getattr("PART::depth", cp, &attr);
|
|
table->gpt_depth = (!error) ? attr + 1 : 0;
|
|
|
|
/*
|
|
* Synthesize a disk geometry. Some partitioning schemes
|
|
* depend on it and since some file systems need it even
|
|
* when the partitition scheme doesn't, we do it here in
|
|
* scheme-independent code.
|
|
*/
|
|
g_part_geometry(table, cp, pp->mediasize / pp->sectorsize);
|
|
|
|
error = G_PART_CREATE(table, gpp);
|
|
if (error)
|
|
goto fail;
|
|
|
|
g_topology_lock();
|
|
|
|
table->gpt_created = 1;
|
|
if (null != NULL)
|
|
kobj_delete((kobj_t)null, M_GEOM);
|
|
|
|
/*
|
|
* Support automatic commit by filling in the gpp_geom
|
|
* parameter.
|
|
*/
|
|
gpp->gpp_parms |= G_PART_PARM_GEOM;
|
|
gpp->gpp_geom = gp;
|
|
|
|
/* Provide feedback if so requested. */
|
|
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
|
sb = sbuf_new_auto();
|
|
sbuf_printf(sb, "%s created\n", gp->name);
|
|
sbuf_finish(sb);
|
|
gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1);
|
|
sbuf_delete(sb);
|
|
}
|
|
return (0);
|
|
|
|
fail:
|
|
g_topology_lock();
|
|
if (null == NULL) {
|
|
g_access(cp, -1, -1, -1);
|
|
g_part_wither(gp, error);
|
|
} else {
|
|
kobj_delete((kobj_t)gp->softc, M_GEOM);
|
|
gp->softc = null;
|
|
}
|
|
gctl_error(req, "%d provider", error);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_delete(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_geom *gp;
|
|
struct g_provider *pp;
|
|
struct g_part_entry *entry;
|
|
struct g_part_table *table;
|
|
struct sbuf *sb;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
|
|
table = gp->softc;
|
|
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (entry->gpe_deleted || entry->gpe_internal)
|
|
continue;
|
|
if (entry->gpe_index == gpp->gpp_index)
|
|
break;
|
|
}
|
|
if (entry == NULL) {
|
|
gctl_error(req, "%d index '%d'", ENOENT, gpp->gpp_index);
|
|
return (ENOENT);
|
|
}
|
|
|
|
pp = entry->gpe_pp;
|
|
if (pp != NULL) {
|
|
if (pp->acr > 0 || pp->acw > 0 || pp->ace > 0) {
|
|
gctl_error(req, "%d", EBUSY);
|
|
return (EBUSY);
|
|
}
|
|
|
|
pp->private = NULL;
|
|
entry->gpe_pp = NULL;
|
|
}
|
|
|
|
if (pp != NULL)
|
|
g_wither_provider(pp, ENXIO);
|
|
|
|
/* Provide feedback if so requested. */
|
|
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
|
sb = sbuf_new_auto();
|
|
G_PART_FULLNAME(table, entry, sb, gp->name);
|
|
sbuf_cat(sb, " deleted\n");
|
|
sbuf_finish(sb);
|
|
gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1);
|
|
sbuf_delete(sb);
|
|
}
|
|
|
|
if (entry->gpe_created) {
|
|
LIST_REMOVE(entry, gpe_entry);
|
|
g_free(entry);
|
|
} else {
|
|
entry->gpe_modified = 0;
|
|
entry->gpe_deleted = 1;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_destroy(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_consumer *cp;
|
|
struct g_geom *gp;
|
|
struct g_provider *pp;
|
|
struct g_part_entry *entry, *tmp;
|
|
struct g_part_table *null, *table;
|
|
struct sbuf *sb;
|
|
int error;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
|
|
table = gp->softc;
|
|
/* Check for busy providers. */
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (entry->gpe_deleted || entry->gpe_internal)
|
|
continue;
|
|
if (gpp->gpp_force) {
|
|
pp = entry->gpe_pp;
|
|
if (pp == NULL)
|
|
continue;
|
|
if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0)
|
|
continue;
|
|
}
|
|
gctl_error(req, "%d", EBUSY);
|
|
return (EBUSY);
|
|
}
|
|
|
|
if (gpp->gpp_force) {
|
|
/* Destroy all providers. */
|
|
LIST_FOREACH_SAFE(entry, &table->gpt_entry, gpe_entry, tmp) {
|
|
pp = entry->gpe_pp;
|
|
if (pp != NULL) {
|
|
pp->private = NULL;
|
|
g_wither_provider(pp, ENXIO);
|
|
}
|
|
LIST_REMOVE(entry, gpe_entry);
|
|
g_free(entry);
|
|
}
|
|
}
|
|
|
|
error = G_PART_DESTROY(table, gpp);
|
|
if (error) {
|
|
gctl_error(req, "%d", error);
|
|
return (error);
|
|
}
|
|
|
|
gp->softc = kobj_create((kobj_class_t)&g_part_null_scheme, M_GEOM,
|
|
M_WAITOK);
|
|
null = gp->softc;
|
|
null->gpt_gp = gp;
|
|
null->gpt_scheme = &g_part_null_scheme;
|
|
LIST_INIT(&null->gpt_entry);
|
|
|
|
cp = LIST_FIRST(&gp->consumer);
|
|
pp = cp->provider;
|
|
null->gpt_last = pp->mediasize / pp->sectorsize - 1;
|
|
|
|
null->gpt_depth = table->gpt_depth;
|
|
null->gpt_opened = table->gpt_opened;
|
|
null->gpt_smhead = table->gpt_smhead;
|
|
null->gpt_smtail = table->gpt_smtail;
|
|
|
|
while ((entry = LIST_FIRST(&table->gpt_entry)) != NULL) {
|
|
LIST_REMOVE(entry, gpe_entry);
|
|
g_free(entry);
|
|
}
|
|
kobj_delete((kobj_t)table, M_GEOM);
|
|
|
|
/* Provide feedback if so requested. */
|
|
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
|
sb = sbuf_new_auto();
|
|
sbuf_printf(sb, "%s destroyed\n", gp->name);
|
|
sbuf_finish(sb);
|
|
gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1);
|
|
sbuf_delete(sb);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_modify(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_geom *gp;
|
|
struct g_part_entry *entry;
|
|
struct g_part_table *table;
|
|
struct sbuf *sb;
|
|
int error;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
|
|
table = gp->softc;
|
|
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (entry->gpe_deleted || entry->gpe_internal)
|
|
continue;
|
|
if (entry->gpe_index == gpp->gpp_index)
|
|
break;
|
|
}
|
|
if (entry == NULL) {
|
|
gctl_error(req, "%d index '%d'", ENOENT, gpp->gpp_index);
|
|
return (ENOENT);
|
|
}
|
|
|
|
error = G_PART_MODIFY(table, entry, gpp);
|
|
if (error) {
|
|
gctl_error(req, "%d", error);
|
|
return (error);
|
|
}
|
|
|
|
if (!entry->gpe_created)
|
|
entry->gpe_modified = 1;
|
|
|
|
/* Provide feedback if so requested. */
|
|
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
|
sb = sbuf_new_auto();
|
|
G_PART_FULLNAME(table, entry, sb, gp->name);
|
|
sbuf_cat(sb, " modified\n");
|
|
sbuf_finish(sb);
|
|
gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1);
|
|
sbuf_delete(sb);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_move(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
gctl_error(req, "%d verb 'move'", ENOSYS);
|
|
return (ENOSYS);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_recover(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_part_table *table;
|
|
struct g_geom *gp;
|
|
struct sbuf *sb;
|
|
int error, recovered;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
table = gp->softc;
|
|
error = recovered = 0;
|
|
|
|
if (table->gpt_corrupt) {
|
|
error = G_PART_RECOVER(table);
|
|
if (error == 0)
|
|
error = g_part_check_integrity(table,
|
|
LIST_FIRST(&gp->consumer));
|
|
if (error) {
|
|
gctl_error(req, "%d recovering '%s' failed",
|
|
error, gp->name);
|
|
return (error);
|
|
}
|
|
recovered = 1;
|
|
}
|
|
/* Provide feedback if so requested. */
|
|
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
|
sb = sbuf_new_auto();
|
|
if (recovered)
|
|
sbuf_printf(sb, "%s recovered\n", gp->name);
|
|
else
|
|
sbuf_printf(sb, "%s recovering is not needed\n",
|
|
gp->name);
|
|
sbuf_finish(sb);
|
|
gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1);
|
|
sbuf_delete(sb);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_resize(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_geom *gp;
|
|
struct g_provider *pp;
|
|
struct g_part_entry *pe, *entry;
|
|
struct g_part_table *table;
|
|
struct sbuf *sb;
|
|
quad_t end;
|
|
int error;
|
|
off_t mediasize;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
table = gp->softc;
|
|
|
|
/* check gpp_index */
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (entry->gpe_deleted || entry->gpe_internal)
|
|
continue;
|
|
if (entry->gpe_index == gpp->gpp_index)
|
|
break;
|
|
}
|
|
if (entry == NULL) {
|
|
gctl_error(req, "%d index '%d'", ENOENT, gpp->gpp_index);
|
|
return (ENOENT);
|
|
}
|
|
|
|
/* check gpp_size */
|
|
end = entry->gpe_start + gpp->gpp_size - 1;
|
|
if (gpp->gpp_size < 1 || end > table->gpt_last) {
|
|
gctl_error(req, "%d size '%jd'", EINVAL,
|
|
(intmax_t)gpp->gpp_size);
|
|
return (EINVAL);
|
|
}
|
|
|
|
LIST_FOREACH(pe, &table->gpt_entry, gpe_entry) {
|
|
if (pe->gpe_deleted || pe->gpe_internal || pe == entry)
|
|
continue;
|
|
if (end >= pe->gpe_start && end <= pe->gpe_end) {
|
|
gctl_error(req, "%d end '%jd'", ENOSPC,
|
|
(intmax_t)end);
|
|
return (ENOSPC);
|
|
}
|
|
if (entry->gpe_start < pe->gpe_start && end > pe->gpe_end) {
|
|
gctl_error(req, "%d size '%jd'", ENOSPC,
|
|
(intmax_t)gpp->gpp_size);
|
|
return (ENOSPC);
|
|
}
|
|
}
|
|
|
|
pp = entry->gpe_pp;
|
|
if ((g_debugflags & 16) == 0 &&
|
|
(pp->acr > 0 || pp->acw > 0 || pp->ace > 0)) {
|
|
if (entry->gpe_end - entry->gpe_start + 1 > gpp->gpp_size) {
|
|
/* Deny shrinking of an opened partition. */
|
|
gctl_error(req, "%d", EBUSY);
|
|
return (EBUSY);
|
|
}
|
|
}
|
|
|
|
error = G_PART_RESIZE(table, entry, gpp);
|
|
if (error) {
|
|
gctl_error(req, "%d%s", error, error != EBUSY ? "":
|
|
" resizing will lead to unexpected shrinking"
|
|
" due to alignment");
|
|
return (error);
|
|
}
|
|
|
|
if (!entry->gpe_created)
|
|
entry->gpe_modified = 1;
|
|
|
|
/* update mediasize of changed provider */
|
|
mediasize = (entry->gpe_end - entry->gpe_start + 1) *
|
|
pp->sectorsize;
|
|
g_resize_provider(pp, mediasize);
|
|
|
|
/* Provide feedback if so requested. */
|
|
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
|
sb = sbuf_new_auto();
|
|
G_PART_FULLNAME(table, entry, sb, gp->name);
|
|
sbuf_cat(sb, " resized\n");
|
|
sbuf_finish(sb);
|
|
gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1);
|
|
sbuf_delete(sb);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_setunset(struct gctl_req *req, struct g_part_parms *gpp,
|
|
unsigned int set)
|
|
{
|
|
struct g_geom *gp;
|
|
struct g_part_entry *entry;
|
|
struct g_part_table *table;
|
|
struct sbuf *sb;
|
|
int error;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
|
|
table = gp->softc;
|
|
|
|
if (gpp->gpp_parms & G_PART_PARM_INDEX) {
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (entry->gpe_deleted || entry->gpe_internal)
|
|
continue;
|
|
if (entry->gpe_index == gpp->gpp_index)
|
|
break;
|
|
}
|
|
if (entry == NULL) {
|
|
gctl_error(req, "%d index '%d'", ENOENT,
|
|
gpp->gpp_index);
|
|
return (ENOENT);
|
|
}
|
|
} else
|
|
entry = NULL;
|
|
|
|
error = G_PART_SETUNSET(table, entry, gpp->gpp_attrib, set);
|
|
if (error) {
|
|
gctl_error(req, "%d attrib '%s'", error, gpp->gpp_attrib);
|
|
return (error);
|
|
}
|
|
|
|
/* Provide feedback if so requested. */
|
|
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
|
sb = sbuf_new_auto();
|
|
sbuf_printf(sb, "%s %sset on ", gpp->gpp_attrib,
|
|
(set) ? "" : "un");
|
|
if (entry)
|
|
G_PART_FULLNAME(table, entry, sb, gp->name);
|
|
else
|
|
sbuf_cat(sb, gp->name);
|
|
sbuf_cat(sb, "\n");
|
|
sbuf_finish(sb);
|
|
gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1);
|
|
sbuf_delete(sb);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_part_ctl_undo(struct gctl_req *req, struct g_part_parms *gpp)
|
|
{
|
|
struct g_consumer *cp;
|
|
struct g_provider *pp;
|
|
struct g_geom *gp;
|
|
struct g_part_entry *entry, *tmp;
|
|
struct g_part_table *table;
|
|
int error, reprobe;
|
|
|
|
gp = gpp->gpp_geom;
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
|
|
g_topology_assert();
|
|
|
|
table = gp->softc;
|
|
if (!table->gpt_opened) {
|
|
gctl_error(req, "%d", EPERM);
|
|
return (EPERM);
|
|
}
|
|
|
|
cp = LIST_FIRST(&gp->consumer);
|
|
LIST_FOREACH_SAFE(entry, &table->gpt_entry, gpe_entry, tmp) {
|
|
entry->gpe_modified = 0;
|
|
if (entry->gpe_created) {
|
|
pp = entry->gpe_pp;
|
|
if (pp != NULL) {
|
|
pp->private = NULL;
|
|
entry->gpe_pp = NULL;
|
|
g_wither_provider(pp, ENXIO);
|
|
}
|
|
entry->gpe_deleted = 1;
|
|
}
|
|
if (entry->gpe_deleted) {
|
|
LIST_REMOVE(entry, gpe_entry);
|
|
g_free(entry);
|
|
}
|
|
}
|
|
|
|
g_topology_unlock();
|
|
|
|
reprobe = (table->gpt_scheme == &g_part_null_scheme ||
|
|
table->gpt_created) ? 1 : 0;
|
|
|
|
if (reprobe) {
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (entry->gpe_internal)
|
|
continue;
|
|
error = EBUSY;
|
|
goto fail;
|
|
}
|
|
while ((entry = LIST_FIRST(&table->gpt_entry)) != NULL) {
|
|
LIST_REMOVE(entry, gpe_entry);
|
|
g_free(entry);
|
|
}
|
|
error = g_part_probe(gp, cp, table->gpt_depth);
|
|
if (error) {
|
|
g_topology_lock();
|
|
g_access(cp, -1, -1, -1);
|
|
g_part_wither(gp, error);
|
|
return (0);
|
|
}
|
|
table = gp->softc;
|
|
|
|
/*
|
|
* Synthesize a disk geometry. Some partitioning schemes
|
|
* depend on it and since some file systems need it even
|
|
* when the partitition scheme doesn't, we do it here in
|
|
* scheme-independent code.
|
|
*/
|
|
pp = cp->provider;
|
|
g_part_geometry(table, cp, pp->mediasize / pp->sectorsize);
|
|
}
|
|
|
|
error = G_PART_READ(table, cp);
|
|
if (error)
|
|
goto fail;
|
|
error = g_part_check_integrity(table, cp);
|
|
if (error)
|
|
goto fail;
|
|
|
|
g_topology_lock();
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (!entry->gpe_internal)
|
|
g_part_new_provider(gp, table, entry);
|
|
}
|
|
|
|
table->gpt_opened = 0;
|
|
g_access(cp, -1, -1, -1);
|
|
return (0);
|
|
|
|
fail:
|
|
g_topology_lock();
|
|
gctl_error(req, "%d", error);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
g_part_wither(struct g_geom *gp, int error)
|
|
{
|
|
struct g_part_entry *entry;
|
|
struct g_part_table *table;
|
|
|
|
table = gp->softc;
|
|
if (table != NULL) {
|
|
G_PART_DESTROY(table, NULL);
|
|
while ((entry = LIST_FIRST(&table->gpt_entry)) != NULL) {
|
|
LIST_REMOVE(entry, gpe_entry);
|
|
g_free(entry);
|
|
}
|
|
if (gp->softc != NULL) {
|
|
kobj_delete((kobj_t)gp->softc, M_GEOM);
|
|
gp->softc = NULL;
|
|
}
|
|
}
|
|
g_wither_geom(gp, error);
|
|
}
|
|
|
|
/*
|
|
* Class methods.
|
|
*/
|
|
|
|
static void
|
|
g_part_ctlreq(struct gctl_req *req, struct g_class *mp, const char *verb)
|
|
{
|
|
struct g_part_parms gpp;
|
|
struct g_part_table *table;
|
|
struct gctl_req_arg *ap;
|
|
enum g_part_ctl ctlreq;
|
|
unsigned int i, mparms, oparms, parm;
|
|
int auto_commit, close_on_error;
|
|
int error, modifies;
|
|
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, verb));
|
|
g_topology_assert();
|
|
|
|
ctlreq = G_PART_CTL_NONE;
|
|
modifies = 1;
|
|
mparms = 0;
|
|
oparms = G_PART_PARM_FLAGS | G_PART_PARM_OUTPUT | G_PART_PARM_VERSION;
|
|
switch (*verb) {
|
|
case 'a':
|
|
if (!strcmp(verb, "add")) {
|
|
ctlreq = G_PART_CTL_ADD;
|
|
mparms |= G_PART_PARM_GEOM | G_PART_PARM_SIZE |
|
|
G_PART_PARM_START | G_PART_PARM_TYPE;
|
|
oparms |= G_PART_PARM_INDEX | G_PART_PARM_LABEL;
|
|
}
|
|
break;
|
|
case 'b':
|
|
if (!strcmp(verb, "bootcode")) {
|
|
ctlreq = G_PART_CTL_BOOTCODE;
|
|
mparms |= G_PART_PARM_GEOM | G_PART_PARM_BOOTCODE;
|
|
}
|
|
break;
|
|
case 'c':
|
|
if (!strcmp(verb, "commit")) {
|
|
ctlreq = G_PART_CTL_COMMIT;
|
|
mparms |= G_PART_PARM_GEOM;
|
|
modifies = 0;
|
|
} else if (!strcmp(verb, "create")) {
|
|
ctlreq = G_PART_CTL_CREATE;
|
|
mparms |= G_PART_PARM_PROVIDER | G_PART_PARM_SCHEME;
|
|
oparms |= G_PART_PARM_ENTRIES;
|
|
}
|
|
break;
|
|
case 'd':
|
|
if (!strcmp(verb, "delete")) {
|
|
ctlreq = G_PART_CTL_DELETE;
|
|
mparms |= G_PART_PARM_GEOM | G_PART_PARM_INDEX;
|
|
} else if (!strcmp(verb, "destroy")) {
|
|
ctlreq = G_PART_CTL_DESTROY;
|
|
mparms |= G_PART_PARM_GEOM;
|
|
oparms |= G_PART_PARM_FORCE;
|
|
}
|
|
break;
|
|
case 'm':
|
|
if (!strcmp(verb, "modify")) {
|
|
ctlreq = G_PART_CTL_MODIFY;
|
|
mparms |= G_PART_PARM_GEOM | G_PART_PARM_INDEX;
|
|
oparms |= G_PART_PARM_LABEL | G_PART_PARM_TYPE;
|
|
} else if (!strcmp(verb, "move")) {
|
|
ctlreq = G_PART_CTL_MOVE;
|
|
mparms |= G_PART_PARM_GEOM | G_PART_PARM_INDEX;
|
|
}
|
|
break;
|
|
case 'r':
|
|
if (!strcmp(verb, "recover")) {
|
|
ctlreq = G_PART_CTL_RECOVER;
|
|
mparms |= G_PART_PARM_GEOM;
|
|
} else if (!strcmp(verb, "resize")) {
|
|
ctlreq = G_PART_CTL_RESIZE;
|
|
mparms |= G_PART_PARM_GEOM | G_PART_PARM_INDEX |
|
|
G_PART_PARM_SIZE;
|
|
}
|
|
break;
|
|
case 's':
|
|
if (!strcmp(verb, "set")) {
|
|
ctlreq = G_PART_CTL_SET;
|
|
mparms |= G_PART_PARM_ATTRIB | G_PART_PARM_GEOM;
|
|
oparms |= G_PART_PARM_INDEX;
|
|
}
|
|
break;
|
|
case 'u':
|
|
if (!strcmp(verb, "undo")) {
|
|
ctlreq = G_PART_CTL_UNDO;
|
|
mparms |= G_PART_PARM_GEOM;
|
|
modifies = 0;
|
|
} else if (!strcmp(verb, "unset")) {
|
|
ctlreq = G_PART_CTL_UNSET;
|
|
mparms |= G_PART_PARM_ATTRIB | G_PART_PARM_GEOM;
|
|
oparms |= G_PART_PARM_INDEX;
|
|
}
|
|
break;
|
|
}
|
|
if (ctlreq == G_PART_CTL_NONE) {
|
|
gctl_error(req, "%d verb '%s'", EINVAL, verb);
|
|
return;
|
|
}
|
|
|
|
bzero(&gpp, sizeof(gpp));
|
|
for (i = 0; i < req->narg; i++) {
|
|
ap = &req->arg[i];
|
|
parm = 0;
|
|
switch (ap->name[0]) {
|
|
case 'a':
|
|
if (!strcmp(ap->name, "arg0")) {
|
|
parm = mparms &
|
|
(G_PART_PARM_GEOM | G_PART_PARM_PROVIDER);
|
|
}
|
|
if (!strcmp(ap->name, "attrib"))
|
|
parm = G_PART_PARM_ATTRIB;
|
|
break;
|
|
case 'b':
|
|
if (!strcmp(ap->name, "bootcode"))
|
|
parm = G_PART_PARM_BOOTCODE;
|
|
break;
|
|
case 'c':
|
|
if (!strcmp(ap->name, "class"))
|
|
continue;
|
|
break;
|
|
case 'e':
|
|
if (!strcmp(ap->name, "entries"))
|
|
parm = G_PART_PARM_ENTRIES;
|
|
break;
|
|
case 'f':
|
|
if (!strcmp(ap->name, "flags"))
|
|
parm = G_PART_PARM_FLAGS;
|
|
else if (!strcmp(ap->name, "force"))
|
|
parm = G_PART_PARM_FORCE;
|
|
break;
|
|
case 'i':
|
|
if (!strcmp(ap->name, "index"))
|
|
parm = G_PART_PARM_INDEX;
|
|
break;
|
|
case 'l':
|
|
if (!strcmp(ap->name, "label"))
|
|
parm = G_PART_PARM_LABEL;
|
|
break;
|
|
case 'o':
|
|
if (!strcmp(ap->name, "output"))
|
|
parm = G_PART_PARM_OUTPUT;
|
|
break;
|
|
case 's':
|
|
if (!strcmp(ap->name, "scheme"))
|
|
parm = G_PART_PARM_SCHEME;
|
|
else if (!strcmp(ap->name, "size"))
|
|
parm = G_PART_PARM_SIZE;
|
|
else if (!strcmp(ap->name, "start"))
|
|
parm = G_PART_PARM_START;
|
|
break;
|
|
case 't':
|
|
if (!strcmp(ap->name, "type"))
|
|
parm = G_PART_PARM_TYPE;
|
|
break;
|
|
case 'v':
|
|
if (!strcmp(ap->name, "verb"))
|
|
continue;
|
|
else if (!strcmp(ap->name, "version"))
|
|
parm = G_PART_PARM_VERSION;
|
|
break;
|
|
}
|
|
if ((parm & (mparms | oparms)) == 0) {
|
|
gctl_error(req, "%d param '%s'", EINVAL, ap->name);
|
|
return;
|
|
}
|
|
switch (parm) {
|
|
case G_PART_PARM_ATTRIB:
|
|
error = g_part_parm_str(req, ap->name,
|
|
&gpp.gpp_attrib);
|
|
break;
|
|
case G_PART_PARM_BOOTCODE:
|
|
error = g_part_parm_bootcode(req, ap->name,
|
|
&gpp.gpp_codeptr, &gpp.gpp_codesize);
|
|
break;
|
|
case G_PART_PARM_ENTRIES:
|
|
error = g_part_parm_intmax(req, ap->name,
|
|
&gpp.gpp_entries);
|
|
break;
|
|
case G_PART_PARM_FLAGS:
|
|
error = g_part_parm_str(req, ap->name, &gpp.gpp_flags);
|
|
break;
|
|
case G_PART_PARM_FORCE:
|
|
error = g_part_parm_uint32(req, ap->name,
|
|
&gpp.gpp_force);
|
|
break;
|
|
case G_PART_PARM_GEOM:
|
|
error = g_part_parm_geom(req, ap->name, &gpp.gpp_geom);
|
|
break;
|
|
case G_PART_PARM_INDEX:
|
|
error = g_part_parm_intmax(req, ap->name,
|
|
&gpp.gpp_index);
|
|
break;
|
|
case G_PART_PARM_LABEL:
|
|
error = g_part_parm_str(req, ap->name, &gpp.gpp_label);
|
|
break;
|
|
case G_PART_PARM_OUTPUT:
|
|
error = 0; /* Write-only parameter */
|
|
break;
|
|
case G_PART_PARM_PROVIDER:
|
|
error = g_part_parm_provider(req, ap->name,
|
|
&gpp.gpp_provider);
|
|
break;
|
|
case G_PART_PARM_SCHEME:
|
|
error = g_part_parm_scheme(req, ap->name,
|
|
&gpp.gpp_scheme);
|
|
break;
|
|
case G_PART_PARM_SIZE:
|
|
error = g_part_parm_quad(req, ap->name, &gpp.gpp_size);
|
|
break;
|
|
case G_PART_PARM_START:
|
|
error = g_part_parm_quad(req, ap->name,
|
|
&gpp.gpp_start);
|
|
break;
|
|
case G_PART_PARM_TYPE:
|
|
error = g_part_parm_str(req, ap->name, &gpp.gpp_type);
|
|
break;
|
|
case G_PART_PARM_VERSION:
|
|
error = g_part_parm_uint32(req, ap->name,
|
|
&gpp.gpp_version);
|
|
break;
|
|
default:
|
|
error = EDOOFUS;
|
|
gctl_error(req, "%d %s", error, ap->name);
|
|
break;
|
|
}
|
|
if (error != 0) {
|
|
if (error == ENOATTR) {
|
|
gctl_error(req, "%d param '%s'", error,
|
|
ap->name);
|
|
}
|
|
return;
|
|
}
|
|
gpp.gpp_parms |= parm;
|
|
}
|
|
if ((gpp.gpp_parms & mparms) != mparms) {
|
|
parm = mparms - (gpp.gpp_parms & mparms);
|
|
gctl_error(req, "%d param '%x'", ENOATTR, parm);
|
|
return;
|
|
}
|
|
|
|
/* Obtain permissions if possible/necessary. */
|
|
close_on_error = 0;
|
|
table = NULL;
|
|
if (modifies && (gpp.gpp_parms & G_PART_PARM_GEOM)) {
|
|
table = gpp.gpp_geom->softc;
|
|
if (table != NULL && table->gpt_corrupt &&
|
|
ctlreq != G_PART_CTL_DESTROY &&
|
|
ctlreq != G_PART_CTL_RECOVER) {
|
|
gctl_error(req, "%d table '%s' is corrupt",
|
|
EPERM, gpp.gpp_geom->name);
|
|
return;
|
|
}
|
|
if (table != NULL && !table->gpt_opened) {
|
|
error = g_access(LIST_FIRST(&gpp.gpp_geom->consumer),
|
|
1, 1, 1);
|
|
if (error) {
|
|
gctl_error(req, "%d geom '%s'", error,
|
|
gpp.gpp_geom->name);
|
|
return;
|
|
}
|
|
table->gpt_opened = 1;
|
|
close_on_error = 1;
|
|
}
|
|
}
|
|
|
|
/* Allow the scheme to check or modify the parameters. */
|
|
if (table != NULL) {
|
|
error = G_PART_PRECHECK(table, ctlreq, &gpp);
|
|
if (error) {
|
|
gctl_error(req, "%d pre-check failed", error);
|
|
goto out;
|
|
}
|
|
} else
|
|
error = EDOOFUS; /* Prevent bogus uninit. warning. */
|
|
|
|
switch (ctlreq) {
|
|
case G_PART_CTL_NONE:
|
|
panic("%s", __func__);
|
|
case G_PART_CTL_ADD:
|
|
error = g_part_ctl_add(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_BOOTCODE:
|
|
error = g_part_ctl_bootcode(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_COMMIT:
|
|
error = g_part_ctl_commit(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_CREATE:
|
|
error = g_part_ctl_create(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_DELETE:
|
|
error = g_part_ctl_delete(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_DESTROY:
|
|
error = g_part_ctl_destroy(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_MODIFY:
|
|
error = g_part_ctl_modify(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_MOVE:
|
|
error = g_part_ctl_move(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_RECOVER:
|
|
error = g_part_ctl_recover(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_RESIZE:
|
|
error = g_part_ctl_resize(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_SET:
|
|
error = g_part_ctl_setunset(req, &gpp, 1);
|
|
break;
|
|
case G_PART_CTL_UNDO:
|
|
error = g_part_ctl_undo(req, &gpp);
|
|
break;
|
|
case G_PART_CTL_UNSET:
|
|
error = g_part_ctl_setunset(req, &gpp, 0);
|
|
break;
|
|
}
|
|
|
|
/* Implement automatic commit. */
|
|
if (!error) {
|
|
auto_commit = (modifies &&
|
|
(gpp.gpp_parms & G_PART_PARM_FLAGS) &&
|
|
strchr(gpp.gpp_flags, 'C') != NULL) ? 1 : 0;
|
|
if (auto_commit) {
|
|
KASSERT(gpp.gpp_parms & G_PART_PARM_GEOM, ("%s",
|
|
__func__));
|
|
error = g_part_ctl_commit(req, &gpp);
|
|
}
|
|
}
|
|
|
|
out:
|
|
if (error && close_on_error) {
|
|
g_access(LIST_FIRST(&gpp.gpp_geom->consumer), -1, -1, -1);
|
|
table->gpt_opened = 0;
|
|
}
|
|
}
|
|
|
|
static int
|
|
g_part_destroy_geom(struct gctl_req *req, struct g_class *mp,
|
|
struct g_geom *gp)
|
|
{
|
|
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, gp->name));
|
|
g_topology_assert();
|
|
|
|
g_part_wither(gp, EINVAL);
|
|
return (0);
|
|
}
|
|
|
|
static struct g_geom *
|
|
g_part_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
|
|
{
|
|
struct g_consumer *cp;
|
|
struct g_geom *gp;
|
|
struct g_part_entry *entry;
|
|
struct g_part_table *table;
|
|
struct root_hold_token *rht;
|
|
int attr, depth;
|
|
int error;
|
|
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, pp->name));
|
|
g_topology_assert();
|
|
|
|
/* Skip providers that are already open for writing. */
|
|
if (pp->acw > 0)
|
|
return (NULL);
|
|
|
|
/*
|
|
* Create a GEOM with consumer and hook it up to the provider.
|
|
* With that we become part of the topology. Optain read access
|
|
* to the provider.
|
|
*/
|
|
gp = g_new_geomf(mp, "%s", pp->name);
|
|
cp = g_new_consumer(gp);
|
|
cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE;
|
|
error = g_attach(cp, pp);
|
|
if (error == 0)
|
|
error = g_access(cp, 1, 0, 0);
|
|
if (error != 0) {
|
|
if (cp->provider)
|
|
g_detach(cp);
|
|
g_destroy_consumer(cp);
|
|
g_destroy_geom(gp);
|
|
return (NULL);
|
|
}
|
|
|
|
rht = root_mount_hold(mp->name);
|
|
g_topology_unlock();
|
|
|
|
/*
|
|
* Short-circuit the whole probing galore when there's no
|
|
* media present.
|
|
*/
|
|
if (pp->mediasize == 0 || pp->sectorsize == 0) {
|
|
error = ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
/* Make sure we can nest and if so, determine our depth. */
|
|
error = g_getattr("PART::isleaf", cp, &attr);
|
|
if (!error && attr) {
|
|
error = ENODEV;
|
|
goto fail;
|
|
}
|
|
error = g_getattr("PART::depth", cp, &attr);
|
|
depth = (!error) ? attr + 1 : 0;
|
|
|
|
error = g_part_probe(gp, cp, depth);
|
|
if (error)
|
|
goto fail;
|
|
|
|
table = gp->softc;
|
|
|
|
/*
|
|
* Synthesize a disk geometry. Some partitioning schemes
|
|
* depend on it and since some file systems need it even
|
|
* when the partitition scheme doesn't, we do it here in
|
|
* scheme-independent code.
|
|
*/
|
|
g_part_geometry(table, cp, pp->mediasize / pp->sectorsize);
|
|
|
|
error = G_PART_READ(table, cp);
|
|
if (error)
|
|
goto fail;
|
|
error = g_part_check_integrity(table, cp);
|
|
if (error)
|
|
goto fail;
|
|
|
|
g_topology_lock();
|
|
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
|
if (!entry->gpe_internal)
|
|
g_part_new_provider(gp, table, entry);
|
|
}
|
|
|
|
root_mount_rel(rht);
|
|
g_access(cp, -1, 0, 0);
|
|
return (gp);
|
|
|
|
fail:
|
|
g_topology_lock();
|
|
root_mount_rel(rht);
|
|
g_access(cp, -1, 0, 0);
|
|
g_detach(cp);
|
|
g_destroy_consumer(cp);
|
|
g_destroy_geom(gp);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Geom methods.
|
|
*/
|
|
|
|
static int
|
|
g_part_access(struct g_provider *pp, int dr, int dw, int de)
|
|
{
|
|
struct g_consumer *cp;
|
|
|
|
G_PART_TRACE((G_T_ACCESS, "%s(%s,%d,%d,%d)", __func__, pp->name, dr,
|
|
dw, de));
|
|
|
|
cp = LIST_FIRST(&pp->geom->consumer);
|
|
|
|
/* We always gain write-exclusive access. */
|
|
return (g_access(cp, dr, dw, dw + de));
|
|
}
|
|
|
|
static void
|
|
g_part_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
|
|
struct g_consumer *cp, struct g_provider *pp)
|
|
{
|
|
char buf[64];
|
|
struct g_part_entry *entry;
|
|
struct g_part_table *table;
|
|
|
|
KASSERT(sb != NULL && gp != NULL, ("%s", __func__));
|
|
table = gp->softc;
|
|
|
|
if (indent == NULL) {
|
|
KASSERT(cp == NULL && pp != NULL, ("%s", __func__));
|
|
entry = pp->private;
|
|
if (entry == NULL)
|
|
return;
|
|
sbuf_printf(sb, " i %u o %ju ty %s", entry->gpe_index,
|
|
(uintmax_t)entry->gpe_offset,
|
|
G_PART_TYPE(table, entry, buf, sizeof(buf)));
|
|
/*
|
|
* libdisk compatibility quirk - the scheme dumps the
|
|
* slicer name and partition type in a way that is
|
|
* compatible with libdisk. When libdisk is not used
|
|
* anymore, this should go away.
|
|
*/
|
|
G_PART_DUMPCONF(table, entry, sb, indent);
|
|
} else if (cp != NULL) { /* Consumer configuration. */
|
|
KASSERT(pp == NULL, ("%s", __func__));
|
|
/* none */
|
|
} else if (pp != NULL) { /* Provider configuration. */
|
|
entry = pp->private;
|
|
if (entry == NULL)
|
|
return;
|
|
sbuf_printf(sb, "%s<start>%ju</start>\n", indent,
|
|
(uintmax_t)entry->gpe_start);
|
|
sbuf_printf(sb, "%s<end>%ju</end>\n", indent,
|
|
(uintmax_t)entry->gpe_end);
|
|
sbuf_printf(sb, "%s<index>%u</index>\n", indent,
|
|
entry->gpe_index);
|
|
sbuf_printf(sb, "%s<type>%s</type>\n", indent,
|
|
G_PART_TYPE(table, entry, buf, sizeof(buf)));
|
|
sbuf_printf(sb, "%s<offset>%ju</offset>\n", indent,
|
|
(uintmax_t)entry->gpe_offset);
|
|
sbuf_printf(sb, "%s<length>%ju</length>\n", indent,
|
|
(uintmax_t)pp->mediasize);
|
|
G_PART_DUMPCONF(table, entry, sb, indent);
|
|
} else { /* Geom configuration. */
|
|
sbuf_printf(sb, "%s<scheme>%s</scheme>\n", indent,
|
|
table->gpt_scheme->name);
|
|
sbuf_printf(sb, "%s<entries>%u</entries>\n", indent,
|
|
table->gpt_entries);
|
|
sbuf_printf(sb, "%s<first>%ju</first>\n", indent,
|
|
(uintmax_t)table->gpt_first);
|
|
sbuf_printf(sb, "%s<last>%ju</last>\n", indent,
|
|
(uintmax_t)table->gpt_last);
|
|
sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n", indent,
|
|
table->gpt_sectors);
|
|
sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n", indent,
|
|
table->gpt_heads);
|
|
sbuf_printf(sb, "%s<state>%s</state>\n", indent,
|
|
table->gpt_corrupt ? "CORRUPT": "OK");
|
|
sbuf_printf(sb, "%s<modified>%s</modified>\n", indent,
|
|
table->gpt_opened ? "true": "false");
|
|
G_PART_DUMPCONF(table, NULL, sb, indent);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
* This start routine is only called for non-trivial requests, all the
|
|
* trivial ones are handled autonomously by the slice code.
|
|
* For requests we handle here, we must call the g_io_deliver() on the
|
|
* bio, and return non-zero to indicate to the slice code that we did so.
|
|
* This code executes in the "DOWN" I/O path, this means:
|
|
* * No sleeping.
|
|
* * Don't grab the topology lock.
|
|
* * Don't call biowait, g_getattr(), g_setattr() or g_read_data()
|
|
*/
|
|
static int
|
|
g_part_ioctl(struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td)
|
|
{
|
|
struct g_part_table *table;
|
|
|
|
table = pp->geom->softc;
|
|
return G_PART_IOCTL(table, pp, cmd, data, fflag, td);
|
|
}
|
|
|
|
static void
|
|
g_part_resize(struct g_consumer *cp)
|
|
{
|
|
struct g_part_table *table;
|
|
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, cp->provider->name));
|
|
g_topology_assert();
|
|
|
|
table = cp->geom->softc;
|
|
if (table->gpt_opened == 0) {
|
|
if (g_access(cp, 1, 1, 1) != 0)
|
|
return;
|
|
table->gpt_opened = 1;
|
|
}
|
|
if (G_PART_RESIZE(table, NULL, NULL) == 0)
|
|
printf("GEOM_PART: %s was automatically resized.\n"
|
|
" Use `gpart commit %s` to save changes or "
|
|
"`gpart undo %s` to revert them.\n", cp->geom->name,
|
|
cp->geom->name, cp->geom->name);
|
|
if (g_part_check_integrity(table, cp) != 0) {
|
|
g_access(cp, -1, -1, -1);
|
|
table->gpt_opened = 0;
|
|
g_part_wither(table->gpt_gp, ENXIO);
|
|
}
|
|
}
|
|
|
|
static void
|
|
g_part_orphan(struct g_consumer *cp)
|
|
{
|
|
struct g_provider *pp;
|
|
struct g_part_table *table;
|
|
|
|
pp = cp->provider;
|
|
KASSERT(pp != NULL, ("%s", __func__));
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, pp->name));
|
|
g_topology_assert();
|
|
|
|
KASSERT(pp->error != 0, ("%s", __func__));
|
|
table = cp->geom->softc;
|
|
if (table != NULL && table->gpt_opened)
|
|
g_access(cp, -1, -1, -1);
|
|
g_part_wither(cp->geom, pp->error);
|
|
}
|
|
|
|
static void
|
|
g_part_spoiled(struct g_consumer *cp)
|
|
{
|
|
|
|
G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, cp->provider->name));
|
|
g_topology_assert();
|
|
|
|
cp->flags |= G_CF_ORPHAN;
|
|
g_part_wither(cp->geom, ENXIO);
|
|
}
|
|
|
|
static void
|
|
g_part_start(struct bio *bp)
|
|
{
|
|
struct bio *bp2;
|
|
struct g_consumer *cp;
|
|
struct g_geom *gp;
|
|
struct g_part_entry *entry;
|
|
struct g_part_table *table;
|
|
struct g_kerneldump *gkd;
|
|
struct g_provider *pp;
|
|
char buf[64];
|
|
|
|
pp = bp->bio_to;
|
|
gp = pp->geom;
|
|
table = gp->softc;
|
|
cp = LIST_FIRST(&gp->consumer);
|
|
|
|
G_PART_TRACE((G_T_BIO, "%s: cmd=%d, provider=%s", __func__, bp->bio_cmd,
|
|
pp->name));
|
|
|
|
entry = pp->private;
|
|
if (entry == NULL) {
|
|
g_io_deliver(bp, ENXIO);
|
|
return;
|
|
}
|
|
|
|
switch(bp->bio_cmd) {
|
|
case BIO_DELETE:
|
|
case BIO_READ:
|
|
case BIO_WRITE:
|
|
if (bp->bio_offset >= pp->mediasize) {
|
|
g_io_deliver(bp, EIO);
|
|
return;
|
|
}
|
|
bp2 = g_clone_bio(bp);
|
|
if (bp2 == NULL) {
|
|
g_io_deliver(bp, ENOMEM);
|
|
return;
|
|
}
|
|
if (bp2->bio_offset + bp2->bio_length > pp->mediasize)
|
|
bp2->bio_length = pp->mediasize - bp2->bio_offset;
|
|
bp2->bio_done = g_std_done;
|
|
bp2->bio_offset += entry->gpe_offset;
|
|
g_io_request(bp2, cp);
|
|
return;
|
|
case BIO_FLUSH:
|
|
break;
|
|
case BIO_GETATTR:
|
|
if (g_handleattr_int(bp, "GEOM::fwheads", table->gpt_heads))
|
|
return;
|
|
if (g_handleattr_int(bp, "GEOM::fwsectors", table->gpt_sectors))
|
|
return;
|
|
if (g_handleattr_int(bp, "PART::isleaf", table->gpt_isleaf))
|
|
return;
|
|
if (g_handleattr_int(bp, "PART::depth", table->gpt_depth))
|
|
return;
|
|
if (g_handleattr_str(bp, "PART::scheme",
|
|
table->gpt_scheme->name))
|
|
return;
|
|
if (g_handleattr_str(bp, "PART::type",
|
|
G_PART_TYPE(table, entry, buf, sizeof(buf))))
|
|
return;
|
|
if (!strcmp("GEOM::kerneldump", bp->bio_attribute)) {
|
|
/*
|
|
* Check that the partition is suitable for kernel
|
|
* dumps. Typically only swap partitions should be
|
|
* used. If the request comes from the nested scheme
|
|
* we allow dumping there as well.
|
|
*/
|
|
if ((bp->bio_from == NULL ||
|
|
bp->bio_from->geom->class != &g_part_class) &&
|
|
G_PART_DUMPTO(table, entry) == 0) {
|
|
g_io_deliver(bp, ENODEV);
|
|
printf("GEOM_PART: Partition '%s' not suitable"
|
|
" for kernel dumps (wrong type?)\n",
|
|
pp->name);
|
|
return;
|
|
}
|
|
gkd = (struct g_kerneldump *)bp->bio_data;
|
|
if (gkd->offset >= pp->mediasize) {
|
|
g_io_deliver(bp, EIO);
|
|
return;
|
|
}
|
|
if (gkd->offset + gkd->length > pp->mediasize)
|
|
gkd->length = pp->mediasize - gkd->offset;
|
|
gkd->offset += entry->gpe_offset;
|
|
}
|
|
break;
|
|
default:
|
|
g_io_deliver(bp, EOPNOTSUPP);
|
|
return;
|
|
}
|
|
|
|
bp2 = g_clone_bio(bp);
|
|
if (bp2 == NULL) {
|
|
g_io_deliver(bp, ENOMEM);
|
|
return;
|
|
}
|
|
bp2->bio_done = g_std_done;
|
|
g_io_request(bp2, cp);
|
|
}
|
|
|
|
static void
|
|
g_part_init(struct g_class *mp)
|
|
{
|
|
|
|
TAILQ_INSERT_HEAD(&g_part_schemes, &g_part_null_scheme, scheme_list);
|
|
}
|
|
|
|
static void
|
|
g_part_fini(struct g_class *mp)
|
|
{
|
|
|
|
TAILQ_REMOVE(&g_part_schemes, &g_part_null_scheme, scheme_list);
|
|
}
|
|
|
|
static void
|
|
g_part_unload_event(void *arg, int flag)
|
|
{
|
|
struct g_consumer *cp;
|
|
struct g_geom *gp;
|
|
struct g_provider *pp;
|
|
struct g_part_scheme *scheme;
|
|
struct g_part_table *table;
|
|
uintptr_t *xchg;
|
|
int acc, error;
|
|
|
|
if (flag == EV_CANCEL)
|
|
return;
|
|
|
|
xchg = arg;
|
|
error = 0;
|
|
scheme = (void *)(*xchg);
|
|
|
|
g_topology_assert();
|
|
|
|
LIST_FOREACH(gp, &g_part_class.geom, geom) {
|
|
table = gp->softc;
|
|
if (table->gpt_scheme != scheme)
|
|
continue;
|
|
|
|
acc = 0;
|
|
LIST_FOREACH(pp, &gp->provider, provider)
|
|
acc += pp->acr + pp->acw + pp->ace;
|
|
LIST_FOREACH(cp, &gp->consumer, consumer)
|
|
acc += cp->acr + cp->acw + cp->ace;
|
|
|
|
if (!acc)
|
|
g_part_wither(gp, ENOSYS);
|
|
else
|
|
error = EBUSY;
|
|
}
|
|
|
|
if (!error)
|
|
TAILQ_REMOVE(&g_part_schemes, scheme, scheme_list);
|
|
|
|
*xchg = error;
|
|
}
|
|
|
|
int
|
|
g_part_modevent(module_t mod, int type, struct g_part_scheme *scheme)
|
|
{
|
|
struct g_part_scheme *iter;
|
|
uintptr_t arg;
|
|
int error;
|
|
|
|
error = 0;
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
TAILQ_FOREACH(iter, &g_part_schemes, scheme_list) {
|
|
if (scheme == iter) {
|
|
printf("GEOM_PART: scheme %s is already "
|
|
"registered!\n", scheme->name);
|
|
break;
|
|
}
|
|
}
|
|
if (iter == NULL) {
|
|
TAILQ_INSERT_TAIL(&g_part_schemes, scheme,
|
|
scheme_list);
|
|
g_retaste(&g_part_class);
|
|
}
|
|
break;
|
|
case MOD_UNLOAD:
|
|
arg = (uintptr_t)scheme;
|
|
error = g_waitfor_event(g_part_unload_event, &arg, M_WAITOK,
|
|
NULL);
|
|
if (error == 0)
|
|
error = arg;
|
|
break;
|
|
default:
|
|
error = EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|