summaryrefslogtreecommitdiffstats
path: root/libfdisk/src/sun.c
diff options
context:
space:
mode:
Diffstat (limited to 'libfdisk/src/sun.c')
-rw-r--r--libfdisk/src/sun.c1190
1 files changed, 1190 insertions, 0 deletions
diff --git a/libfdisk/src/sun.c b/libfdisk/src/sun.c
new file mode 100644
index 0000000..833f421
--- /dev/null
+++ b/libfdisk/src/sun.c
@@ -0,0 +1,1190 @@
+/*
+ * Copyright (C) 2013 Karel Zak <kzak@redhat.com>
+ *
+ * Based on original code from fdisk:
+ * Jakub Jelinek (jj@sunsite.mff.cuni.cz), July 1996
+ * Merged with fdisk for other architectures, aeb, June 1998.
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br> Mar 1999, Internationalization
+ */
+#include <stdio.h> /* stderr */
+#include <stdlib.h> /* qsort */
+#include <string.h> /* strstr */
+#include <unistd.h> /* write */
+#include <sys/ioctl.h> /* ioctl */
+
+#include "blkdev.h"
+#include "bitops.h"
+
+#include "fdiskP.h"
+#include "pt-sun.h"
+#include "all-io.h"
+
+
+/**
+ * SECTION: sun
+ * @title: SUN
+ * @short_description: disk label specific functions
+ *
+ */
+
+/*
+ * in-memory fdisk SUN stuff
+ */
+struct fdisk_sun_label {
+ struct fdisk_label head; /* generic part */
+ struct sun_disklabel *header; /* on-disk data (pointer to cxt->firstsector) */
+};
+
+static struct fdisk_parttype sun_parttypes[] = {
+ {SUN_TAG_UNASSIGNED, N_("Unassigned")},
+ {SUN_TAG_BOOT, N_("Boot")},
+ {SUN_TAG_ROOT, N_("SunOS root")},
+ {SUN_TAG_SWAP, N_("SunOS swap")},
+ {SUN_TAG_USR, N_("SunOS usr")},
+ {SUN_TAG_WHOLEDISK, N_("Whole disk")},
+ {SUN_TAG_STAND, N_("SunOS stand")},
+ {SUN_TAG_VAR, N_("SunOS var")},
+ {SUN_TAG_HOME, N_("SunOS home")},
+ {SUN_TAG_ALTSCTR, N_("SunOS alt sectors")},
+ {SUN_TAG_CACHE, N_("SunOS cachefs")},
+ {SUN_TAG_RESERVED, N_("SunOS reserved")},
+ {SUN_TAG_LINUX_SWAP, N_("Linux swap")},
+ {SUN_TAG_LINUX_NATIVE, N_("Linux native")},
+ {SUN_TAG_LINUX_LVM, N_("Linux LVM")},
+ {SUN_TAG_LINUX_RAID, N_("Linux raid autodetect")},
+ { 0, NULL }
+};
+
+/* return pointer buffer with on-disk data */
+static inline struct sun_disklabel *self_disklabel(struct fdisk_context *cxt)
+{
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ return ((struct fdisk_sun_label *) cxt->label)->header;
+}
+
+/* return in-memory sun fdisk data */
+static inline struct fdisk_sun_label *self_label(struct fdisk_context *cxt)
+{
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ return (struct fdisk_sun_label *) cxt->label;
+}
+
+static void set_partition(struct fdisk_context *cxt, size_t i,
+ uint64_t start, uint64_t stop, uint16_t sysid)
+{
+ struct sun_disklabel *sunlabel = self_disklabel(cxt);
+ struct fdisk_parttype *t =
+ fdisk_label_get_parttype_from_code(cxt->label, sysid);
+
+ if (start / (cxt->geom.heads * cxt->geom.sectors) > UINT32_MAX)
+ fdisk_warnx(cxt, _("%#zu: start cylinder overflows Sun label limits"), i+1);
+
+ if (stop - start > UINT32_MAX)
+ fdisk_warnx(cxt, _("%#zu: number of sectors overflow Sun label limits"), i+1);
+
+ sunlabel->vtoc.infos[i].id = cpu_to_be16(sysid);
+ sunlabel->vtoc.infos[i].flags = cpu_to_be16(0);
+ sunlabel->partitions[i].start_cylinder =
+ cpu_to_be32(start / (cxt->geom.heads * cxt->geom.sectors));
+ sunlabel->partitions[i].num_sectors = cpu_to_be32(stop - start);
+ fdisk_label_set_changed(cxt->label, 1);
+
+ fdisk_info_new_partition(cxt, i + 1, start, stop, t);
+}
+
+static size_t count_used_partitions(struct fdisk_context *cxt)
+{
+ struct sun_disklabel *sunlabel = self_disklabel(cxt);
+ size_t ct = 0, i;
+
+ assert(sunlabel);
+
+ for (i = 0; i < cxt->label->nparts_max; i++) {
+ if (sunlabel->partitions[i].num_sectors)
+ ct++;
+ }
+ return ct;
+}
+
+static int sun_probe_label(struct fdisk_context *cxt)
+{
+ struct fdisk_sun_label *sun;
+ struct sun_disklabel *sunlabel;
+ int need_fixing = 0;
+
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ /* map first sector to header */
+ sun = self_label(cxt);
+ sun->header = (struct sun_disklabel *) cxt->firstsector;
+ sunlabel = sun->header;
+
+ if (be16_to_cpu(sunlabel->magic) != SUN_LABEL_MAGIC) {
+ sun->header = NULL;
+ return 0; /* failed */
+ }
+
+ if (sun_pt_checksum(sunlabel)) {
+ fdisk_warnx(cxt, _("Detected sun disklabel with wrong checksum. "
+ "Probably you'll have to set all the values, "
+ "e.g. heads, sectors, cylinders and partitions "
+ "or force a fresh label (s command in main menu)"));
+ return 1;
+ }
+
+ cxt->label->nparts_max = SUN_MAXPARTITIONS;
+ cxt->geom.heads = be16_to_cpu(sunlabel->nhead);
+ cxt->geom.cylinders = be16_to_cpu(sunlabel->ncyl);
+ cxt->geom.sectors = be16_to_cpu(sunlabel->nsect);
+
+ /* we have on label geom, but user has to win */
+ if (fdisk_has_user_device_geometry(cxt))
+ fdisk_apply_user_device_properties(cxt);
+
+ if (be32_to_cpu(sunlabel->vtoc.version) != SUN_VTOC_VERSION) {
+ fdisk_warnx(cxt, _("Detected sun disklabel with wrong version [%d]."),
+ be32_to_cpu(sunlabel->vtoc.version));
+ need_fixing = 1;
+ }
+ if (be32_to_cpu(sunlabel->vtoc.sanity) != SUN_VTOC_SANITY) {
+ fdisk_warnx(cxt, _("Detected sun disklabel with wrong vtoc.sanity [0x%08x]."),
+ be32_to_cpu(sunlabel->vtoc.sanity));
+ need_fixing = 1;
+ }
+ if (be16_to_cpu(sunlabel->vtoc.nparts) != SUN_MAXPARTITIONS) {
+ fdisk_warnx(cxt, _("Detected sun disklabel with wrong vtoc.nparts [%u]."),
+ be16_to_cpu(sunlabel->vtoc.nparts));
+ need_fixing = 1;
+ }
+ if (need_fixing) {
+ fdisk_warnx(cxt, _("Warning: Wrong values need to be fixed up and "
+ "will be corrected by w(rite)"));
+
+ sunlabel->vtoc.version = cpu_to_be32(SUN_VTOC_VERSION);
+ sunlabel->vtoc.sanity = cpu_to_be32(SUN_VTOC_SANITY);
+ sunlabel->vtoc.nparts = cpu_to_be16(SUN_MAXPARTITIONS);
+ sunlabel->csum = 0;
+ sunlabel->csum = sun_pt_checksum(sunlabel);
+
+ fdisk_label_set_changed(cxt->label, 1);
+ }
+
+ cxt->label->nparts_cur = count_used_partitions(cxt);
+
+ return 1;
+}
+
+static void ask_geom(struct fdisk_context *cxt)
+{
+ uintmax_t res;
+
+ assert(cxt);
+
+ if (fdisk_ask_number(cxt, cxt->label->geom_min.heads, 1,
+ cxt->label->geom_max.heads,
+ _("Heads"), &res) == 0)
+ cxt->geom.heads = res;
+
+ if (fdisk_ask_number(cxt, cxt->label->geom_min.sectors, 1,
+ cxt->label->geom_max.sectors,
+ _("Sectors/track"), &res) == 0)
+ cxt->geom.sectors = res;
+
+ if (fdisk_ask_number(cxt, cxt->label->geom_min.cylinders, 1,
+ cxt->label->geom_max.cylinders,
+ _("Cylinders"), &res) == 0)
+ cxt->geom.cylinders = res;
+}
+
+static int sun_create_disklabel(struct fdisk_context *cxt)
+{
+ unsigned int ndiv;
+ struct fdisk_sun_label *sun; /* libfdisk sun handler */
+ struct sun_disklabel *sunlabel; /* on disk data */
+ int rc = 0;
+
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ /* map first sector to header */
+ rc = fdisk_init_firstsector_buffer(cxt, 0, 0);
+ if (rc)
+ return rc;
+
+ sun = self_label(cxt);
+ sun->header = (struct sun_disklabel *) cxt->firstsector;
+
+ sunlabel = sun->header;
+
+ cxt->label->nparts_max = SUN_MAXPARTITIONS;
+
+ sunlabel->magic = cpu_to_be16(SUN_LABEL_MAGIC);
+ sunlabel->vtoc.version = cpu_to_be32(SUN_VTOC_VERSION);
+ sunlabel->vtoc.sanity = cpu_to_be32(SUN_VTOC_SANITY);
+ sunlabel->vtoc.nparts = cpu_to_be16(SUN_MAXPARTITIONS);
+
+ if (cxt->geom.heads && cxt->geom.sectors) {
+ fdisk_sector_t llsectors;
+
+ if (blkdev_get_sectors(cxt->dev_fd, (unsigned long long *) &llsectors) == 0) {
+ int sec_fac = cxt->sector_size / 512;
+ fdisk_sector_t llcyls;
+
+ llcyls = llsectors / (cxt->geom.heads * cxt->geom.sectors * sec_fac);
+ cxt->geom.cylinders = llcyls;
+ if (cxt->geom.cylinders != llcyls)
+ cxt->geom.cylinders = ~0;
+ } else {
+ fdisk_warnx(cxt,
+ _("BLKGETSIZE ioctl failed on %s. "
+ "Using geometry cylinder value of %llu. "
+ "This value may be truncated for devices "
+ "> 33.8 GB."),
+ cxt->dev_path, cxt->geom.cylinders);
+ }
+ } else
+ ask_geom(cxt);
+
+ sunlabel->acyl = cpu_to_be16(0);
+ sunlabel->pcyl = cpu_to_be16(cxt->geom.cylinders);
+ sunlabel->rpm = cpu_to_be16(5400);
+ sunlabel->intrlv = cpu_to_be16(1);
+ sunlabel->apc = cpu_to_be16(0);
+
+ sunlabel->nhead = cpu_to_be16(cxt->geom.heads);
+ sunlabel->nsect = cpu_to_be16(cxt->geom.sectors);
+ sunlabel->ncyl = cpu_to_be16(cxt->geom.cylinders);
+
+ snprintf((char *) sunlabel->label_id, sizeof(sunlabel->label_id),
+ "Linux cyl %ju alt %u hd %u sec %ju",
+ (uintmax_t) cxt->geom.cylinders,
+ be16_to_cpu(sunlabel->acyl),
+ cxt->geom.heads,
+ (uintmax_t) cxt->geom.sectors);
+
+ if (cxt->geom.cylinders * cxt->geom.heads * cxt->geom.sectors >= 150 * 2048) {
+ ndiv = cxt->geom.cylinders - (50 * 2048 / (cxt->geom.heads * cxt->geom.sectors)); /* 50M swap */
+ } else
+ ndiv = cxt->geom.cylinders * 2 / 3;
+
+ /* create the default layout only if no-script defined */
+ if (!cxt->script) {
+ set_partition(cxt, 0, 0,
+ (uint64_t) ndiv * cxt->geom.heads * cxt->geom.sectors,
+ SUN_TAG_LINUX_NATIVE);
+ set_partition(cxt, 1,
+ (uint64_t) ndiv * cxt->geom.heads * cxt->geom.sectors,
+ (uint64_t) cxt->geom.cylinders * cxt->geom.heads * cxt->geom.sectors,
+ SUN_TAG_LINUX_SWAP);
+ sunlabel->vtoc.infos[1].flags |= cpu_to_be16(SUN_FLAG_UNMNT);
+
+ set_partition(cxt, 2, 0,
+ (uint64_t) cxt->geom.cylinders * cxt->geom.heads * cxt->geom.sectors,
+ SUN_TAG_WHOLEDISK);
+ }
+
+ sunlabel->csum = 0;
+ sunlabel->csum = sun_pt_checksum(sunlabel);
+
+ fdisk_label_set_changed(cxt->label, 1);
+ cxt->label->nparts_cur = count_used_partitions(cxt);
+
+ fdisk_info(cxt, _("Created a new Sun disklabel."));
+ return 0;
+}
+
+static int sun_toggle_partition_flag(struct fdisk_context *cxt, size_t i, unsigned long flag)
+{
+ struct sun_disklabel *sunlabel;
+ struct sun_info *p;
+
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ if (i >= cxt->label->nparts_max)
+ return -EINVAL;
+
+ sunlabel = self_disklabel(cxt);
+ p = &sunlabel->vtoc.infos[i];
+
+ switch (flag) {
+ case SUN_FLAG_UNMNT:
+ p->flags ^= cpu_to_be16(SUN_FLAG_UNMNT);
+ fdisk_label_set_changed(cxt->label, 1);
+ break;
+ case SUN_FLAG_RONLY:
+ p->flags ^= cpu_to_be16(SUN_FLAG_RONLY);
+ fdisk_label_set_changed(cxt->label, 1);
+ break;
+ default:
+ return 1;
+ }
+
+ return 0;
+}
+
+static void fetch_sun(struct fdisk_context *cxt,
+ uint32_t *starts,
+ uint32_t *lens,
+ uint32_t *start,
+ uint32_t *stop)
+{
+ struct sun_disklabel *sunlabel;
+ int continuous = 1;
+ size_t i;
+ int sectors_per_cylinder = cxt->geom.heads * cxt->geom.sectors;
+
+ assert(cxt);
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ sunlabel = self_disklabel(cxt);
+
+ *start = 0;
+ *stop = cxt->geom.cylinders * sectors_per_cylinder;
+
+ for (i = 0; i < cxt->label->nparts_max; i++) {
+ struct sun_partition *part = &sunlabel->partitions[i];
+ struct sun_info *info = &sunlabel->vtoc.infos[i];
+
+ if (part->num_sectors &&
+ be16_to_cpu(info->id) != SUN_TAG_UNASSIGNED &&
+ be16_to_cpu(info->id) != SUN_TAG_WHOLEDISK) {
+ starts[i] = be32_to_cpu(part->start_cylinder) *
+ sectors_per_cylinder;
+ lens[i] = be32_to_cpu(part->num_sectors);
+ if (continuous) {
+ if (starts[i] == *start) {
+ *start += lens[i];
+ int remained_sectors = *start % sectors_per_cylinder;
+ if (remained_sectors) {
+ *start += sectors_per_cylinder - remained_sectors;
+ }
+ } else if (starts[i] + lens[i] >= *stop)
+ *stop = starts[i];
+ else
+ continuous = 0;
+ /* There will be probably more gaps
+ than one, so lets check afterwards */
+ }
+ } else {
+ starts[i] = 0;
+ lens[i] = 0;
+ }
+ }
+}
+
+/* non-Linux qsort_r(3) has usually differently ordered arguments */
+#if !defined (__linux__) || !defined (__GLIBC__)
+# undef HAVE_QSORT_R
+#endif
+
+#ifdef HAVE_QSORT_R
+static int verify_sun_cmp(int *a, int *b, void *data)
+{
+ unsigned int *verify_sun_starts = (unsigned int *) data;
+
+ if (*a == -1)
+ return 1;
+ if (*b == -1)
+ return -1;
+ if (verify_sun_starts[*a] > verify_sun_starts[*b])
+ return 1;
+ return -1;
+}
+#endif
+
+static int sun_verify_disklabel(struct fdisk_context *cxt)
+{
+ uint32_t starts[SUN_MAXPARTITIONS], lens[SUN_MAXPARTITIONS], start, stop;
+ uint32_t i,j,k,starto,endo;
+#ifdef HAVE_QSORT_R
+ int array[SUN_MAXPARTITIONS];
+ unsigned int *verify_sun_starts;
+#endif
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ fetch_sun(cxt, starts, lens, &start, &stop);
+
+ for (k = 0; k < 7; k++) {
+ for (i = 0; i < SUN_MAXPARTITIONS; i++) {
+ if (k && (lens[i] % (cxt->geom.heads * cxt->geom.sectors)))
+ fdisk_warnx(cxt, _("Partition %u doesn't end on cylinder boundary."), i+1);
+ if (lens[i]) {
+ for (j = 0; j < i; j++)
+ if (lens[j]) {
+ if (starts[j] == starts[i]+lens[i]) {
+ starts[j] = starts[i]; lens[j] += lens[i];
+ lens[i] = 0;
+ } else if (starts[i] == starts[j]+lens[j]){
+ lens[j] += lens[i];
+ lens[i] = 0;
+ } else if (!k) {
+ if (starts[i] < starts[j]+lens[j] &&
+ starts[j] < starts[i]+lens[i]) {
+ starto = starts[i];
+ if (starts[j] > starto)
+ starto = starts[j];
+ endo = starts[i]+lens[i];
+ if (starts[j]+lens[j] < endo)
+ endo = starts[j]+lens[j];
+ fdisk_warnx(cxt, _("Partition %u overlaps with others in "
+ "sectors %u-%u."), i+1, starto, endo);
+ }
+ }
+ }
+ }
+ }
+ }
+
+#ifdef HAVE_QSORT_R
+ for (i = 0; i < SUN_MAXPARTITIONS; i++) {
+ if (lens[i])
+ array[i] = i;
+ else
+ array[i] = -1;
+ }
+ verify_sun_starts = starts;
+
+ qsort_r(array,ARRAY_SIZE(array),sizeof(array[0]),
+ (int (*)(const void *,const void *,void *)) verify_sun_cmp,
+ verify_sun_starts);
+
+ if (array[0] == -1) {
+ fdisk_info(cxt, _("No partitions defined."));
+ return 0;
+ }
+ stop = cxt->geom.cylinders * cxt->geom.heads * cxt->geom.sectors;
+ if (starts[array[0]])
+ fdisk_warnx(cxt, _("Unused gap - sectors 0-%u."), starts[array[0]]);
+ for (i = 0; i < 7 && array[i+1] != -1; i++) {
+ fdisk_warnx(cxt, _("Unused gap - sectors %u-%u."),
+ (starts[array[i]] + lens[array[i]]),
+ starts[array[i+1]]);
+ }
+ start = (starts[array[i]] + lens[array[i]]);
+ if (start < stop)
+ fdisk_warnx(cxt, _("Unused gap - sectors %u-%u."), start, stop);
+#endif
+ return 0;
+}
+
+
+static int is_free_sector(struct fdisk_context *cxt,
+ fdisk_sector_t s, uint32_t starts[], uint32_t lens[])
+{
+ size_t i;
+
+ for (i = 0; i < cxt->label->nparts_max; i++) {
+ if (lens[i] && starts[i] <= s
+ && starts[i] + lens[i] > s)
+ return 0;
+ }
+ return 1;
+}
+
+static int sun_add_partition(
+ struct fdisk_context *cxt,
+ struct fdisk_partition *pa,
+ size_t *partno)
+{
+ struct sun_disklabel *sunlabel = self_disklabel(cxt);
+ uint32_t starts[SUN_MAXPARTITIONS], lens[SUN_MAXPARTITIONS];
+ struct sun_partition *part;
+ struct sun_info *info;
+ uint32_t start, stop, stop2;
+ int whole_disk = 0;
+ int sys = pa && pa->type ? pa->type->code : SUN_TAG_LINUX_NATIVE;
+ int rc;
+ size_t n;
+
+ char mesg[256];
+ size_t i;
+ unsigned int first, last;
+
+ DBG(LABEL, ul_debug("SUN adding partition"));
+
+ rc = fdisk_partition_next_partno(pa, cxt, &n);
+ if (rc)
+ return rc;
+
+ part = &sunlabel->partitions[n];
+ info = &sunlabel->vtoc.infos[n];
+
+ if (part->num_sectors && be16_to_cpu(info->id) != SUN_TAG_UNASSIGNED) {
+ fdisk_info(cxt, _("Partition %zu is already defined. Delete "
+ "it before re-adding it."), n + 1);
+ return -EINVAL;
+ }
+
+ fetch_sun(cxt, starts, lens, &start, &stop);
+
+ if (pa && pa->type && pa->type->code == SUN_TAG_WHOLEDISK)
+ whole_disk = 1;
+
+ if (stop <= start) {
+ if (n == 2)
+ whole_disk = 1;
+ else {
+ fdisk_info(cxt, _("Other partitions already cover the "
+ "whole disk. Delete some/shrink them before retry."));
+ return -EINVAL;
+ }
+ }
+
+ if (pa && pa->start_follow_default)
+ first = start;
+ else if (pa && fdisk_partition_has_start(pa)) {
+ first = pa->start;
+
+ if (!whole_disk && !is_free_sector(cxt, first, starts, lens))
+ return -ERANGE;
+ } else {
+ struct fdisk_ask *ask;
+
+ if (n == 2)
+ fdisk_info(cxt, _("It is highly recommended that the "
+ "third partition covers the whole disk "
+ "and is of type `Whole disk'"));
+
+ snprintf(mesg, sizeof(mesg), _("First %s"),
+ fdisk_get_unit(cxt, FDISK_SINGULAR));
+ for (;;) {
+ ask = fdisk_new_ask();
+ if (!ask)
+ return -ENOMEM;
+
+ fdisk_ask_set_query(ask, mesg);
+ fdisk_ask_set_type(ask, FDISK_ASKTYPE_NUMBER);
+
+ if (whole_disk) {
+ fdisk_ask_number_set_low(ask, 0); /* minimal */
+ fdisk_ask_number_set_default(ask, 0); /* default */
+ fdisk_ask_number_set_high(ask, 0); /* maximal */
+ } else if (n == 2) {
+ fdisk_ask_number_set_low(ask, 0); /* minimal */
+ fdisk_ask_number_set_default(ask, 0); /* default */
+ fdisk_ask_number_set_high(ask, fdisk_scround(cxt, stop)); /* maximal */
+ } else {
+ fdisk_ask_number_set_low(ask, fdisk_scround(cxt, start)); /* minimal */
+ fdisk_ask_number_set_default(ask, fdisk_scround(cxt, start)); /* default */
+ fdisk_ask_number_set_high(ask, fdisk_scround(cxt, stop)); /* maximal */
+ }
+ rc = fdisk_do_ask(cxt, ask);
+ first = fdisk_ask_number_get_result(ask);
+ fdisk_unref_ask(ask);
+ if (rc)
+ return rc;
+
+ if (fdisk_use_cylinders(cxt))
+ first *= fdisk_get_units_per_sector(cxt);
+
+ if (!fdisk_use_cylinders(cxt)) {
+ /* Starting sector has to be properly aligned */
+ int cs = cxt->geom.heads * cxt->geom.sectors;
+ int x = first % cs;
+
+ if (x) {
+ fdisk_info(cxt, _("Aligning the first sector from %u to %u "
+ "to be on cylinder boundary."),
+ first, first + cs - x);
+ first += cs - x;
+ }
+ }
+
+ /* ewt asks to add: "don't start a partition at cyl 0"
+ However, edmundo@rano.demon.co.uk writes:
+ "In addition to having a Sun partition table, to be able to
+ boot from the disc, the first partition, /dev/sdX1, must
+ start at cylinder 0. This means that /dev/sdX1 contains
+ the partition table and the boot block, as these are the
+ first two sectors of the disc. Therefore you must be
+ careful what you use /dev/sdX1 for. In particular, you must
+ not use a partition starting at cylinder 0 for Linux swap,
+ as that would overwrite the partition table and the boot
+ block. You may, however, use such a partition for a UFS
+ or EXT2 file system, as these file systems leave the first
+ 1024 bytes undisturbed. */
+ /* On the other hand, one should not use partitions
+ starting at block 0 in an md, or the label will
+ be trashed. */
+ if (!is_free_sector(cxt, first, starts, lens) && !whole_disk) {
+ if (n == 2 && !first) {
+ whole_disk = 1;
+ break;
+ }
+ fdisk_warnx(cxt, _("Sector %d is already allocated"), first);
+ } else
+ break;
+ }
+ }
+
+ stop = cxt->geom.cylinders * cxt->geom.heads * cxt->geom.sectors; /* ancient */
+ stop2 = stop;
+ for (i = 0; i < cxt->label->nparts_max; i++) {
+ if (starts[i] > first && starts[i] < stop)
+ stop = starts[i];
+ }
+
+ /* last */
+ if (pa && pa->end_follow_default)
+ last = whole_disk || (n == 2 && !first) ? stop2 : stop;
+
+ else if (pa && fdisk_partition_has_size(pa)) {
+ last = first + pa->size;
+
+ if (!whole_disk && last > stop)
+ return -ERANGE;
+ } else {
+ struct fdisk_ask *ask = fdisk_new_ask();
+
+ if (!ask)
+ return -ENOMEM;
+
+ snprintf(mesg, sizeof(mesg),
+ _("Last %s or +/-%s or +/-size{K,M,G,T,P}"),
+ fdisk_get_unit(cxt, FDISK_SINGULAR),
+ fdisk_get_unit(cxt, FDISK_PLURAL));
+ fdisk_ask_set_query(ask, mesg);
+ fdisk_ask_set_type(ask, FDISK_ASKTYPE_OFFSET);
+
+ if (whole_disk) {
+ fdisk_ask_number_set_low(ask, fdisk_scround(cxt, stop2)); /* minimal */
+ fdisk_ask_number_set_default(ask, fdisk_scround(cxt, stop2)); /* default */
+ fdisk_ask_number_set_high(ask, fdisk_scround(cxt, stop2)); /* maximal */
+ fdisk_ask_number_set_base(ask, 0);
+ } else if (n == 2 && !first) {
+ fdisk_ask_number_set_low(ask, fdisk_scround(cxt, first)); /* minimal */
+ fdisk_ask_number_set_default(ask, fdisk_scround(cxt, stop2)); /* default */
+ fdisk_ask_number_set_high(ask, fdisk_scround(cxt, stop2)); /* maximal */
+ fdisk_ask_number_set_base(ask, fdisk_scround(cxt, first));
+ } else {
+ fdisk_ask_number_set_low(ask, fdisk_scround(cxt, first)); /* minimal */
+ fdisk_ask_number_set_default(ask, fdisk_scround(cxt, stop)); /* default */
+ fdisk_ask_number_set_high(ask, fdisk_scround(cxt, stop)); /* maximal */
+ fdisk_ask_number_set_base(ask, fdisk_scround(cxt, first));
+ }
+
+ fdisk_ask_number_set_wrap_negative(ask, 1); /* wrap negative around high */
+
+ if (fdisk_use_cylinders(cxt))
+ fdisk_ask_number_set_unit(ask,
+ cxt->sector_size *
+ fdisk_get_units_per_sector(cxt));
+ else
+ fdisk_ask_number_set_unit(ask, cxt->sector_size);
+
+ rc = fdisk_do_ask(cxt, ask);
+ last = fdisk_ask_number_get_result(ask);
+
+ fdisk_unref_ask(ask);
+ if (rc)
+ return rc;
+ if (fdisk_use_cylinders(cxt))
+ last *= fdisk_get_units_per_sector(cxt);
+ }
+
+ if (n == 2 && !first) {
+ if (last >= stop2) {
+ whole_disk = 1;
+ last = stop2;
+ } else if (last > stop) {
+ fdisk_warnx(cxt,
+ _("You haven't covered the whole disk with the 3rd partition, but your value\n"
+ "%lu %s covers some other partition. Your entry has been changed\n"
+ "to %lu %s"),
+ (unsigned long) fdisk_scround(cxt, last), fdisk_get_unit(cxt, FDISK_SINGULAR),
+ (unsigned long) fdisk_scround(cxt, stop), fdisk_get_unit(cxt, FDISK_SINGULAR));
+ last = stop;
+ }
+ } else if (!whole_disk && last > stop)
+ last = stop;
+
+ if (whole_disk)
+ sys = SUN_TAG_WHOLEDISK;
+
+ DBG(LABEL, ul_debug("SUN new partition #%zu: first=%u, last=%u, sys=%d", n, first, last, sys));
+
+ set_partition(cxt, n, first, last, sys);
+ cxt->label->nparts_cur = count_used_partitions(cxt);
+ if (partno)
+ *partno = n;
+ return 0;
+}
+
+static int sun_delete_partition(struct fdisk_context *cxt,
+ size_t partnum)
+{
+ struct sun_disklabel *sunlabel;
+ struct sun_partition *part;
+ struct sun_info *info;
+ unsigned int nsec;
+
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ sunlabel = self_disklabel(cxt);
+ part = &sunlabel->partitions[partnum];
+ info = &sunlabel->vtoc.infos[partnum];
+
+ if (partnum == 2 &&
+ be16_to_cpu(info->id) == SUN_TAG_WHOLEDISK &&
+ !part->start_cylinder &&
+ (nsec = be32_to_cpu(part->num_sectors))
+ == cxt->geom.heads * cxt->geom.sectors * cxt->geom.cylinders)
+ fdisk_info(cxt, _("If you want to maintain SunOS/Solaris compatibility, "
+ "consider leaving this "
+ "partition as Whole disk (5), starting at 0, with %u "
+ "sectors"), nsec);
+ info->id = cpu_to_be16(SUN_TAG_UNASSIGNED);
+ part->num_sectors = 0;
+ cxt->label->nparts_cur = count_used_partitions(cxt);
+ fdisk_label_set_changed(cxt->label, 1);
+ return 0;
+}
+
+static int sun_get_disklabel_item(struct fdisk_context *cxt, struct fdisk_labelitem *item)
+{
+ struct sun_disklabel *sunlabel;
+ int rc = 0;
+
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ sunlabel = self_disklabel(cxt);
+
+ switch (item->id) {
+ case SUN_LABELITEM_LABELID:
+ item->name =_("Label ID");
+ item->type = 's';
+ item->data.str = *sunlabel->label_id ? strndup((char *)sunlabel->label_id, sizeof(sunlabel->label_id)) : NULL;
+ break;
+ case SUN_LABELITEM_VTOCID:
+ item->name =_("Volume ID");
+ item->type = 's';
+ item->data.str = *sunlabel->vtoc.volume_id ? strndup((char *)sunlabel->vtoc.volume_id, sizeof(sunlabel->vtoc.volume_id)) : NULL;
+ break;
+ case SUN_LABELITEM_RPM:
+ item->name =_("Rpm");
+ item->type = 'j';
+ item->data.num64 = be16_to_cpu(sunlabel->rpm);
+ break;
+ case SUN_LABELITEM_ACYL:
+ item->name =_("Alternate cylinders");
+ item->type = 'j';
+ item->data.num64 = be16_to_cpu(sunlabel->acyl);
+ break;
+ case SUN_LABELITEM_PCYL:
+ item->name =_("Physical cylinders");
+ item->type = 'j';
+ item->data.num64 = be16_to_cpu(sunlabel->pcyl);
+ break;
+ case SUN_LABELITEM_APC:
+ item->name =_("Extra sects/cyl");
+ item->type = 'j';
+ item->data.num64 = be16_to_cpu(sunlabel->apc);
+ break;
+ case SUN_LABELITEM_INTRLV:
+ item->name =_("Interleave");
+ item->type = 'j';
+ item->data.num64 = be16_to_cpu(sunlabel->intrlv);
+ break;
+ default:
+ if (item->id < __FDISK_NLABELITEMS)
+ rc = 1; /* unsupported generic item */
+ else
+ rc = 2; /* out of range */
+ break;
+ }
+
+ return rc;
+}
+
+static struct fdisk_parttype *sun_get_parttype(
+ struct fdisk_context *cxt,
+ size_t n)
+{
+ struct sun_disklabel *sunlabel = self_disklabel(cxt);
+ struct fdisk_parttype *t;
+
+ if (n >= cxt->label->nparts_max)
+ return NULL;
+
+ t = fdisk_label_get_parttype_from_code(cxt->label,
+ be16_to_cpu(sunlabel->vtoc.infos[n].id));
+ return t ? : fdisk_new_unknown_parttype(be16_to_cpu(sunlabel->vtoc.infos[n].id), NULL);
+}
+
+
+static int sun_get_partition(struct fdisk_context *cxt, size_t n,
+ struct fdisk_partition *pa)
+{
+ struct sun_disklabel *sunlabel;
+ struct sun_partition *part;
+ uint16_t flags;
+ uint64_t start, len;
+
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ if (n >= cxt->label->nparts_max)
+ return -EINVAL;
+
+ sunlabel = self_disklabel(cxt);
+ part = &sunlabel->partitions[n];
+
+ pa->used = part->num_sectors ? 1 : 0;
+ if (!pa->used)
+ return 0;
+
+ flags = be16_to_cpu(sunlabel->vtoc.infos[n].flags);
+ start = (uint64_t) be32_to_cpu(part->start_cylinder)
+ * cxt->geom.heads * cxt->geom.sectors;
+ len = be32_to_cpu(part->num_sectors);
+
+ pa->type = sun_get_parttype(cxt, n);
+ if (pa->type && pa->type->code == SUN_TAG_WHOLEDISK)
+ pa->wholedisk = 1;
+
+ if (flags & SUN_FLAG_UNMNT || flags & SUN_FLAG_RONLY) {
+ if (asprintf(&pa->attrs, "%c%c",
+ flags & SUN_FLAG_UNMNT ? 'u' : ' ',
+ flags & SUN_FLAG_RONLY ? 'r' : ' ') < 0)
+ return -ENOMEM;
+ }
+
+ pa->start = start;
+ pa->size = len;
+
+ return 0;
+}
+
+/**
+ * fdisk_sun_set_alt_cyl:
+ * @cxt: context
+ *
+ * Sets number of alternative cylinders. This function uses libfdisk Ask API
+ * for dialog with user.
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_sun_set_alt_cyl(struct fdisk_context *cxt)
+{
+ struct sun_disklabel *sunlabel = self_disklabel(cxt);
+ uintmax_t res;
+ int rc = fdisk_ask_number(cxt, 0, /* low */
+ be16_to_cpu(sunlabel->acyl), /* default */
+ 65535, /* high */
+ _("Number of alternate cylinders"), /* query */
+ &res); /* result */
+ if (rc)
+ return rc;
+
+ sunlabel->acyl = cpu_to_be16(res);
+ return 0;
+}
+
+/**
+ * fdisk_sun_set_xcyl:
+ * @cxt: context
+ *
+ * Sets number of extra sectors per cylinder. This function uses libfdisk Ask API
+ * for dialog with user.
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_sun_set_xcyl(struct fdisk_context *cxt)
+{
+ struct sun_disklabel *sunlabel = self_disklabel(cxt);
+ uintmax_t res;
+ int rc = fdisk_ask_number(cxt, 0, /* low */
+ be16_to_cpu(sunlabel->apc), /* default */
+ cxt->geom.sectors, /* high */
+ _("Extra sectors per cylinder"), /* query */
+ &res); /* result */
+ if (rc)
+ return rc;
+ sunlabel->apc = cpu_to_be16(res);
+ return 0;
+}
+
+/**
+ * fdisk_sun_set_ilfact:
+ * @cxt: context
+ *
+ * Sets interleave factor. This function uses libfdisk Ask API for dialog with
+ * user.
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_sun_set_ilfact(struct fdisk_context *cxt)
+{
+ struct sun_disklabel *sunlabel = self_disklabel(cxt);
+ uintmax_t res;
+ int rc = fdisk_ask_number(cxt, 1, /* low */
+ be16_to_cpu(sunlabel->intrlv), /* default */
+ 32, /* high */
+ _("Interleave factor"), /* query */
+ &res); /* result */
+ if (rc)
+ return rc;
+ sunlabel->intrlv = cpu_to_be16(res);
+ return 0;
+}
+
+/**
+ * fdisk_sun_set_rspeed
+ * @cxt: context
+ *
+ * Sets rotation speed. This function uses libfdisk Ask API for dialog with
+ * user.
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_sun_set_rspeed(struct fdisk_context *cxt)
+{
+ struct sun_disklabel *sunlabel = self_disklabel(cxt);
+ uintmax_t res;
+ int rc = fdisk_ask_number(cxt, 1, /* low */
+ be16_to_cpu(sunlabel->rpm), /* default */
+ USHRT_MAX, /* high */
+ _("Rotation speed (rpm)"), /* query */
+ &res); /* result */
+ if (rc)
+ return rc;
+ sunlabel->rpm = cpu_to_be16(res);
+ return 0;
+}
+
+/**
+ * fdisk_sun_set_pcylcount
+ * @cxt: context
+ *
+ * Sets number of physical cylinders. This function uses libfdisk Ask API for
+ * dialog with user.
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_sun_set_pcylcount(struct fdisk_context *cxt)
+{
+ struct sun_disklabel *sunlabel = self_disklabel(cxt);
+ uintmax_t res;
+ int rc = fdisk_ask_number(cxt, 0, /* low */
+ be16_to_cpu(sunlabel->pcyl), /* default */
+ USHRT_MAX, /* high */
+ _("Number of physical cylinders"), /* query */
+ &res); /* result */
+ if (!rc)
+ return rc;
+ sunlabel->pcyl = cpu_to_be16(res);
+ return 0;
+}
+
+static int sun_write_disklabel(struct fdisk_context *cxt)
+{
+ struct sun_disklabel *sunlabel;
+ const size_t sz = sizeof(struct sun_disklabel);
+
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ sunlabel = self_disklabel(cxt);
+
+ /* Maybe geometry has been modified */
+ sunlabel->nhead = cpu_to_be16(cxt->geom.heads);
+ sunlabel->nsect = cpu_to_be16(cxt->geom.sectors);
+
+ if (cxt->geom.cylinders != be16_to_cpu(sunlabel->ncyl)) {
+ int a = cpu_to_be16(cxt->geom.cylinders);
+ int b = be16_to_cpu(sunlabel->acyl);
+ sunlabel->ncyl = a - b;
+ }
+
+ sunlabel->csum = 0;
+ sunlabel->csum = sun_pt_checksum(sunlabel);
+
+ if (lseek(cxt->dev_fd, 0, SEEK_SET) < 0)
+ return -errno;
+ if (write_all(cxt->dev_fd, sunlabel, sz) != 0)
+ return -errno;
+
+ return 0;
+}
+
+static int sun_set_partition(
+ struct fdisk_context *cxt,
+ size_t i,
+ struct fdisk_partition *pa)
+{
+ struct sun_disklabel *sunlabel;
+ struct sun_partition *part;
+ struct sun_info *info;
+
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ sunlabel = self_disklabel(cxt);
+
+ if (i >= cxt->label->nparts_max)
+ return -EINVAL;
+
+ if (pa->type) {
+ struct fdisk_parttype *t = pa->type;
+
+ if (t->code > UINT16_MAX)
+ return -EINVAL;
+
+ if (i == 2 && t->code != SUN_TAG_WHOLEDISK)
+ fdisk_info(cxt, _("Consider leaving partition 3 as Whole disk (5),\n"
+ "as SunOS/Solaris expects it and even Linux likes it.\n"));
+
+ part = &sunlabel->partitions[i];
+ info = &sunlabel->vtoc.infos[i];
+
+ if (cxt->script == NULL &&
+ t->code == SUN_TAG_LINUX_SWAP && !part->start_cylinder) {
+ int yes, rc;
+
+ rc = fdisk_ask_yesno(cxt,
+ _("It is highly recommended that the partition at offset 0\n"
+ "is UFS, EXT2FS filesystem or SunOS swap. Putting Linux swap\n"
+ "there may destroy your partition table and bootblock.\n"
+ "Are you sure you want to tag the partition as Linux swap?"), &yes);
+ if (rc)
+ return rc;
+ if (!yes)
+ return 1;
+ }
+
+ switch (t->code) {
+ case SUN_TAG_SWAP:
+ case SUN_TAG_LINUX_SWAP:
+ /* swaps are not mountable by default */
+ info->flags |= cpu_to_be16(SUN_FLAG_UNMNT);
+ break;
+ default:
+ /* assume other types are mountable;
+ user can change it anyway */
+ info->flags &= ~cpu_to_be16(SUN_FLAG_UNMNT);
+ break;
+ }
+ info->id = cpu_to_be16(t->code);
+ }
+
+ if (fdisk_partition_has_start(pa))
+ sunlabel->partitions[i].start_cylinder =
+ cpu_to_be32(pa->start / (cxt->geom.heads * cxt->geom.sectors));
+ if (fdisk_partition_has_size(pa))
+ sunlabel->partitions[i].num_sectors = cpu_to_be32(pa->size);
+
+ fdisk_label_set_changed(cxt->label, 1);
+ return 0;
+}
+
+
+static int sun_reset_alignment(struct fdisk_context *cxt __attribute__((__unused__)))
+{
+ fdisk_set_first_lba(cxt, 0);
+ return 0;
+}
+
+
+static int sun_partition_is_used(
+ struct fdisk_context *cxt,
+ size_t i)
+{
+ struct sun_disklabel *sunlabel;
+
+ assert(cxt);
+ assert(cxt->label);
+ assert(fdisk_is_label(cxt, SUN));
+
+ if (i >= cxt->label->nparts_max)
+ return 0;
+
+ sunlabel = self_disklabel(cxt);
+ return sunlabel->partitions[i].num_sectors ? 1 : 0;
+}
+
+static const struct fdisk_field sun_fields[] =
+{
+ { FDISK_FIELD_DEVICE, N_("Device"), 10, 0 },
+ { FDISK_FIELD_START, N_("Start"), 5, FDISK_FIELDFL_NUMBER },
+ { FDISK_FIELD_END, N_("End"), 5, FDISK_FIELDFL_NUMBER },
+ { FDISK_FIELD_SECTORS, N_("Sectors"), 5, FDISK_FIELDFL_NUMBER },
+ { FDISK_FIELD_CYLINDERS,N_("Cylinders"), 5, FDISK_FIELDFL_NUMBER },
+ { FDISK_FIELD_SIZE, N_("Size"), 5, FDISK_FIELDFL_NUMBER },
+ { FDISK_FIELD_TYPEID, N_("Id"), 2, FDISK_FIELDFL_NUMBER },
+ { FDISK_FIELD_TYPE, N_("Type"), 0.1, 0 },
+ { FDISK_FIELD_ATTR, N_("Flags"), 0, FDISK_FIELDFL_NUMBER }
+};
+
+static const struct fdisk_label_operations sun_operations =
+{
+ .probe = sun_probe_label,
+ .write = sun_write_disklabel,
+ .verify = sun_verify_disklabel,
+ .create = sun_create_disklabel,
+ .get_item = sun_get_disklabel_item,
+
+ .get_part = sun_get_partition,
+ .set_part = sun_set_partition,
+ .add_part = sun_add_partition,
+ .del_part = sun_delete_partition,
+
+ .part_is_used = sun_partition_is_used,
+ .part_toggle_flag = sun_toggle_partition_flag,
+
+ .reset_alignment = sun_reset_alignment,
+};
+
+/*
+ * allocates SUN label driver
+ */
+struct fdisk_label *fdisk_new_sun_label(struct fdisk_context *cxt __attribute__ ((__unused__)))
+{
+ struct fdisk_label *lb;
+ struct fdisk_sun_label *sun;
+
+ sun = calloc(1, sizeof(*sun));
+ if (!sun)
+ return NULL;
+
+ /* initialize generic part of the driver */
+ lb = (struct fdisk_label *) sun;
+ lb->name = "sun";
+ lb->id = FDISK_DISKLABEL_SUN;
+ lb->op = &sun_operations;
+ lb->parttypes = sun_parttypes;
+ lb->nparttypes = ARRAY_SIZE(sun_parttypes) - 1;
+ lb->fields = sun_fields;
+ lb->nfields = ARRAY_SIZE(sun_fields);
+ lb->flags |= FDISK_LABEL_FL_REQUIRE_GEOMETRY;
+
+ lb->geom_min.sectors = 1;
+ lb->geom_min.heads = 1;
+ lb->geom_min.cylinders = 1;
+
+ lb->geom_max.sectors = 1024;
+ lb->geom_max.heads = 1024;
+ lb->geom_max.cylinders = USHRT_MAX;
+ return lb;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 00:20:07 +0000