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-rw-r--r--lib/libdisk/disk.c400
1 files changed, 400 insertions, 0 deletions
diff --git a/lib/libdisk/disk.c b/lib/libdisk/disk.c
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--- /dev/null
+++ b/lib/libdisk/disk.c
@@ -0,0 +1,400 @@
+/*
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
+ * ----------------------------------------------------------------------------
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <inttypes.h>
+#include <err.h>
+#include <sys/sysctl.h>
+#include <sys/stdint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/disklabel.h>
+#include <sys/uuid.h>
+#include <sys/gpt.h>
+#include <paths.h>
+#include "libdisk.h"
+
+#include <ctype.h>
+#include <errno.h>
+#include <assert.h>
+#include <uuid.h>
+
+const enum platform platform =
+#if defined (P_DEBUG)
+ P_DEBUG
+#elif defined (PC98)
+ p_pc98
+#elif defined(__i386__)
+ p_i386
+#elif defined(__alpha__)
+ p_alpha
+#elif defined(__sparc64__)
+ p_sparc64
+#elif defined(__ia64__)
+ p_ia64
+#elif defined(__ppc__)
+ p_ppc
+#elif defined(__amd64__)
+ p_amd64
+#elif defined(__arm__)
+ p_arm
+#else
+ IHAVENOIDEA
+#endif
+ ;
+
+const char *
+chunk_name(chunk_e type)
+{
+ switch(type) {
+ case unused: return ("unused");
+ case mbr: return ("mbr");
+ case part: return ("part");
+ case gpt: return ("gpt");
+ case pc98: return ("pc98");
+ case sun: return ("sun");
+ case freebsd: return ("freebsd");
+ case fat: return ("fat");
+ case spare: return ("spare");
+ case efi: return ("efi");
+ case apple: return ("apple");
+ default: return ("??");
+ }
+}
+
+struct disk *
+Open_Disk(const char *name)
+{
+ struct disk *d;
+ char *conftxt;
+ size_t txtsize;
+ int error;
+
+ error = sysctlbyname("kern.geom.conftxt", NULL, &txtsize, NULL, 0);
+ if (error) {
+ warn("kern.geom.conftxt sysctl not available, giving up!");
+ return (NULL);
+ }
+ conftxt = malloc(txtsize+1);
+ if (conftxt == NULL) {
+ warn("cannot malloc memory for conftxt");
+ return (NULL);
+ }
+ error = sysctlbyname("kern.geom.conftxt", conftxt, &txtsize, NULL, 0);
+ if (error) {
+ warn("error reading kern.geom.conftxt from the system");
+ free(conftxt);
+ return (NULL);
+ }
+ conftxt[txtsize] = '\0'; /* in case kernel bug is still there */
+ d = Int_Open_Disk(name, conftxt);
+ free(conftxt);
+
+ return (d);
+}
+
+void
+Debug_Disk(struct disk *d)
+{
+
+ printf("Debug_Disk(%s)", d->name);
+
+#ifndef __ia64__
+ printf(" bios_geom=%lu/%lu/%lu = %lu\n",
+ d->bios_cyl, d->bios_hd, d->bios_sect,
+ d->bios_cyl * d->bios_hd * d->bios_sect);
+#if defined(PC98)
+ printf(" boot1=%p, boot2=%p, bootipl=%p, bootmenu=%p\n",
+ d->boot1, d->boot2, d->bootipl, d->bootmenu);
+#elif defined(__i386__) || defined(__amd64__)
+ printf(" boot1=%p, boot2=%p, bootmgr=%p\n",
+ d->boot1, d->boot2, d->bootmgr);
+#elif defined(__alpha__)
+ printf(" boot1=%p, bootmgr=%p\n",
+ d->boot1, d->bootmgr);
+#else
+/* Should be: error "Debug_Disk: unknown arch"; */
+#endif
+#else /* __ia64__ */
+ printf(" media size=%lu, sector size=%lu\n", d->media_size,
+ d->sector_size);
+#endif
+
+ Debug_Chunk(d->chunks);
+}
+
+void
+Free_Disk(struct disk *d)
+{
+ if (d->chunks)
+ Free_Chunk(d->chunks);
+ if (d->name)
+ free(d->name);
+#ifdef PC98
+ if (d->bootipl)
+ free(d->bootipl);
+ if (d->bootmenu)
+ free(d->bootmenu);
+#else
+#if !defined(__ia64__)
+ if (d->bootmgr)
+ free(d->bootmgr);
+#endif
+#endif
+#if !defined(__ia64__)
+ if (d->boot1)
+ free(d->boot1);
+#endif
+#if defined(__i386__) || defined(__amd64__)
+ if (d->boot2)
+ free(d->boot2);
+#endif
+ free(d);
+}
+
+#if 0
+void
+Collapse_Disk(struct disk *d)
+{
+
+ while (Collapse_Chunk(d, d->chunks))
+ ;
+}
+#endif
+
+static int
+qstrcmp(const void* a, const void* b)
+{
+ const char *str1 = *(char* const*)a;
+ const char *str2 = *(char* const*)b;
+
+ return strcmp(str1, str2);
+}
+
+char **
+Disk_Names()
+{
+ int disk_cnt;
+ static char **disks;
+ int error;
+ size_t listsize;
+ char *disklist;
+
+ error = sysctlbyname("kern.disks", NULL, &listsize, NULL, 0);
+ if (error) {
+ warn("kern.disks sysctl not available");
+ return NULL;
+ }
+
+ if (listsize == 0)
+ return (NULL);
+
+ disks = malloc(sizeof *disks * (1 + MAX_NO_DISKS));
+ if (disks == NULL)
+ return NULL;
+ disklist = (char *)malloc(listsize + 1);
+ if (disklist == NULL) {
+ free(disks);
+ return NULL;
+ }
+ memset(disks,0,sizeof *disks * (1 + MAX_NO_DISKS));
+ memset(disklist, 0, listsize + 1);
+ error = sysctlbyname("kern.disks", disklist, &listsize, NULL, 0);
+ if (error || disklist[0] == 0) {
+ free(disklist);
+ free(disks);
+ return NULL;
+ }
+ for (disk_cnt = 0; disk_cnt < MAX_NO_DISKS; disk_cnt++) {
+ disks[disk_cnt] = strsep(&disklist, " ");
+ if (disks[disk_cnt] == NULL)
+ break;
+ }
+ qsort(disks, disk_cnt, sizeof(char*), qstrcmp);
+ return disks;
+}
+
+#ifdef PC98
+void
+Set_Boot_Mgr(struct disk *d, const u_char *bootipl, const size_t bootipl_size,
+ const u_char *bootmenu, const size_t bootmenu_size)
+#else
+void
+Set_Boot_Mgr(struct disk *d, const u_char *b, const size_t s)
+#endif
+{
+#if !defined(__ia64__)
+#ifdef PC98
+ if (d->sector_size == 0)
+ return;
+ if (bootipl_size % d->sector_size != 0)
+ return;
+ if (d->bootipl)
+ free(d->bootipl);
+ if (!bootipl) {
+ d->bootipl = NULL;
+ } else {
+ d->bootipl_size = bootipl_size;
+ d->bootipl = malloc(bootipl_size);
+ if (!d->bootipl)
+ return;
+ memcpy(d->bootipl, bootipl, bootipl_size);
+ }
+
+ if (bootmenu_size % d->sector_size != 0)
+ return;
+ if (d->bootmenu)
+ free(d->bootmenu);
+ if (!bootmenu) {
+ d->bootmenu = NULL;
+ } else {
+ d->bootmenu_size = bootmenu_size;
+ d->bootmenu = malloc(bootmenu_size);
+ if (!d->bootmenu)
+ return;
+ memcpy(d->bootmenu, bootmenu, bootmenu_size);
+ }
+#else
+ if (d->sector_size == 0)
+ return;
+ if (s % d->sector_size != 0)
+ return;
+ if (d->bootmgr)
+ free(d->bootmgr);
+ if (!b) {
+ d->bootmgr = NULL;
+ } else {
+ d->bootmgr_size = s;
+ d->bootmgr = malloc(s);
+ if (!d->bootmgr)
+ return;
+ memcpy(d->bootmgr, b, s);
+ }
+#endif
+#endif
+}
+
+int
+Set_Boot_Blocks(struct disk *d, const u_char *b1, const u_char *b2)
+{
+#if defined(__i386__) || defined(__amd64__)
+ if (d->boot1)
+ free(d->boot1);
+ d->boot1 = malloc(512);
+ if (!d->boot1)
+ return -1;
+ memcpy(d->boot1, b1, 512);
+ if (d->boot2)
+ free(d->boot2);
+ d->boot2 = malloc(15 * 512);
+ if (!d->boot2)
+ return -1;
+ memcpy(d->boot2, b2, 15 * 512);
+#elif defined(__alpha__)
+ if (d->boot1)
+ free(d->boot1);
+ d->boot1 = malloc(15 * 512);
+ if (!d->boot1)
+ return -1;
+ memcpy(d->boot1, b1, 15 * 512);
+#elif defined(__sparc64__)
+ if (d->boot1 != NULL)
+ free(d->boot1);
+ d->boot1 = malloc(16 * 512);
+ if (d->boot1 == NULL)
+ return (-1);
+ memcpy(d->boot1, b1, 16 * 512);
+#elif defined(__ia64__)
+ /* nothing */
+#else
+/* Should be: #error "Set_Boot_Blocks: unknown arch"; */
+#endif
+ return 0;
+}
+
+const char *
+slice_type_name( int type, int subtype )
+{
+
+ switch (type) {
+ case whole:
+ return "whole";
+ case mbr:
+ switch (subtype) {
+ case 1: return "fat (12-bit)";
+ case 2: return "XENIX /";
+ case 3: return "XENIX /usr";
+ case 4: return "fat (16-bit,<=32Mb)";
+ case 5: return "extended DOS";
+ case 6: return "fat (16-bit,>32Mb)";
+ case 7: return "NTFS/HPFS/QNX";
+ case 8: return "AIX bootable";
+ case 9: return "AIX data";
+ case 10: return "OS/2 bootmgr";
+ case 11: return "fat (32-bit)";
+ case 12: return "fat (32-bit,LBA)";
+ case 14: return "fat (16-bit,>32Mb,LBA)";
+ case 15: return "extended DOS, LBA";
+ case 18: return "Compaq Diagnostic";
+ case 57: return "Plan 9";
+ case 77: return "QNX 4.X";
+ case 78: return "QNX 4.X 2nd part";
+ case 79: return "QNX 4.X 3rd part";
+ case 84: return "OnTrack diskmgr";
+ case 100: return "Netware 2.x";
+ case 101: return "Netware 3.x";
+ case 115: return "SCO UnixWare";
+ case 128: return "Minix 1.1";
+ case 129: return "Minix 1.5";
+ case 130: return "linux_swap";
+ case 131: return "ext2fs";
+ case 133: return "linux extended";
+ case 166: return "OpenBSD FFS"; /* 0xA6 */
+ case 168: return "Mac OS-X";
+ case 169: return "NetBSD FFS"; /* 0xA9 */
+ case 171: return "Mac OS-X Boot";
+ case 182: return "OpenBSD"; /* dedicated */
+ case 183: return "bsd/os";
+ case 184: return "bsd/os swap";
+ case 191: return "Solaris (new)";
+ case 238: return "EFI GPT";
+ case 239: return "EFI Sys. Part.";
+ default: return "unknown";
+ }
+ case fat:
+ return "fat";
+ case freebsd:
+ switch (subtype) {
+#ifdef PC98
+ case 0xc494: return "freebsd";
+#else
+ case 165: return "freebsd";
+#endif
+ default: return "unknown";
+ }
+ case extended:
+ return "extended";
+ case part:
+ return "part";
+ case efi:
+ return "efi";
+ case unused:
+ return "unused";
+ default:
+ return "unknown";
+ }
+}
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