File: [local] / src / sbin / disklabel / editor.c (download)
Revision 1.418, Fri Mar 22 21:49:52 2024 UTC (2 months, 2 weeks ago) by jan
Branch: MAIN
CVS Tags: HEAD
Changes since 1.417: +2 -2 lines
Increase /usr/src partition to 2GB - 5GB
ok miod@, deraadt@, otto@ and bluhm@
|
/* $OpenBSD: editor.c,v 1.418 2024/03/22 21:49:52 jan Exp $ */
/*
* Copyright (c) 1997-2000 Todd C. Miller <millert@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h> /* MAXBSIZE DEV_BSIZE */
#include <sys/types.h>
#include <sys/signal.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/dkio.h>
#include <sys/sysctl.h>
#define DKTYPENAMES
#include <sys/disklabel.h>
#include <ufs/ffs/fs.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <string.h>
#include <libgen.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>
#include "extern.h"
#include "pathnames.h"
#define ROUNDUP(_s, _a) ((((_s) + (_a) - 1) / (_a)) * (_a))
#define ROUNDDOWN(_s, _a) (((_s) / (_a)) * (_a))
#define CHUNKSZ(_c) ((_c)->stop - (_c)->start)
/* flags for getuint64() */
#define DO_CONVERSIONS 0x00000001
#define DO_ROUNDING 0x00000002
/* flags for alignpartition() */
#define ROUND_OFFSET_UP 0x00000001
#define ROUND_OFFSET_DOWN 0x00000002
#define ROUND_SIZE_UP 0x00000004
#define ROUND_SIZE_DOWN 0x00000008
#define ROUND_SIZE_OVERLAP 0x00000010
/* Special return values for getnumber and getuint64() */
#define CMD_ABORTED (ULLONG_MAX - 1)
#define CMD_BADVALUE (ULLONG_MAX)
/* structure to describe a portion of a disk */
struct diskchunk {
u_int64_t start;
u_int64_t stop;
};
/* used when sorting mountpoints in mpsave() */
struct mountinfo {
char *mountpoint;
int partno;
};
/* used when allocating all space according to recommendations */
struct space_allocation {
u_int64_t minsz; /* starts as blocks, xlated to sectors. */
u_int64_t maxsz; /* starts as blocks, xlated to sectors. */
int rate; /* % of extra space to use */
char *mp;
};
/*
* NOTE! Changing partition sizes in the space_allocation tables
* requires corresponding updates to the *.ok files in
* /usr/src/regress/sbin/disklabel.
*/
/* entries for swap and var are changed by editor_allocspace() */
struct space_allocation alloc_big[] = {
{ MEG(150), GIG(1), 5, "/" },
{ MEG(80), MEG(256), 10, "swap" },
{ MEG(120), GIG(4), 8, "/tmp" },
{ MEG(80), GIG(4), 13, "/var" },
{ MEG(1500), GIG(30), 10, "/usr" },
{ MEG(384), GIG(1), 3, "/usr/X11R6" },
{ GIG(1), GIG(20), 15, "/usr/local" },
{ GIG(2), GIG(5), 2, "/usr/src" },
{ GIG(5), GIG(6), 4, "/usr/obj" },
{ GIG(1), GIG(300), 30, "/home" }
/* Anything beyond this leave for the user to decide */
};
struct space_allocation alloc_medium[] = {
{ MEG(800), GIG(2), 5, "/" },
{ MEG(80), MEG(256), 10, "swap" },
{ MEG(1300), GIG(3), 78, "/usr" },
{ MEG(256), GIG(2), 7, "/home" }
};
struct space_allocation alloc_small[] = {
{ MEG(700), GIG(4), 95, "/" },
{ MEG(1), MEG(256), 5, "swap" }
};
struct space_allocation alloc_stupid[] = {
{ MEG(1), MEG(2048), 100, "/" }
};
#ifndef nitems
#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
#endif
struct alloc_table {
struct space_allocation *table;
int sz;
};
struct alloc_table alloc_table_default[] = {
{ alloc_big, nitems(alloc_big) },
{ alloc_medium, nitems(alloc_medium) },
{ alloc_small, nitems(alloc_small) },
{ alloc_stupid, nitems(alloc_stupid) }
};
struct alloc_table *alloc_table = alloc_table_default;
int alloc_table_nitems = 4;
void edit_packname(struct disklabel *);
void editor_resize(struct disklabel *, const char *);
void editor_add(struct disklabel *, const char *);
void editor_change(struct disklabel *, const char *);
u_int64_t editor_countfree(const struct disklabel *);
void editor_delete(struct disklabel *, const char *);
void editor_help(void);
void editor_modify(struct disklabel *, const char *);
void editor_name(const struct disklabel *, const char *);
char *getstring(const char *, const char *, const char *);
u_int64_t getuint64(const struct disklabel *, char *, char *, u_int64_t,
u_int64_t, int *);
u_int64_t getnumber(const char *, const char *, u_int32_t, u_int32_t);
int getpartno(const struct disklabel *, const char *, const char *);
int has_overlap(struct disklabel *);
int partition_cmp(const void *, const void *);
const struct partition **sort_partitions(const struct disklabel *, int);
void find_bounds(const struct disklabel *);
void set_bounds(struct disklabel *);
void set_duid(struct disklabel *);
int set_fragblock(struct disklabel *, int);
const struct diskchunk *free_chunks(const struct disklabel *, int);
int micmp(const void *, const void *);
int mpequal(char **, char **);
int get_fstype(struct disklabel *, int);
int get_mp(const struct disklabel *, int);
int get_offset(struct disklabel *, int);
int get_size(struct disklabel *, int);
void zero_partitions(struct disklabel *);
u_int64_t max_partition_size(const struct disklabel *, int);
void display_edit(const struct disklabel *, char);
void psize(u_int64_t sz, char unit, const struct disklabel *lp);
char *get_token(char **);
int apply_unit(double, u_char, u_int64_t *);
int parse_sizespec(const char *, double *, char **);
int parse_sizerange(char *, u_int64_t *, u_int64_t *);
int parse_pct(char *, int *);
int alignpartition(struct disklabel *, int, u_int64_t, u_int64_t, int);
int allocate_space(struct disklabel *, const struct alloc_table *);
void allocate_physmemincr(struct space_allocation *);
int allocate_partition(struct disklabel *, struct space_allocation *);
const struct diskchunk *allocate_diskchunk(const struct disklabel *,
const struct space_allocation *);
static u_int64_t starting_sector;
static u_int64_t ending_sector;
static int resizeok;
/*
* Simple partition editor.
*/
int
editor(int f)
{
struct disklabel origlabel, lastlabel, tmplabel, newlab = lab;
struct partition *pp;
FILE *fp;
char buf[BUFSIZ], *cmd, *arg;
char **omountpoints = NULL;
char **origmountpoints = NULL, **tmpmountpoints = NULL;
int i, error = 0;
/* Alloc and init mount point info */
if (!(omountpoints = calloc(MAXPARTITIONS, sizeof(char *))) ||
!(origmountpoints = calloc(MAXPARTITIONS, sizeof(char *))) ||
!(tmpmountpoints = calloc(MAXPARTITIONS, sizeof(char *))))
err(1, NULL);
/* How big is the OpenBSD portion of the disk? */
find_bounds(&newlab);
/* Make sure there is no partition overlap. */
if (has_overlap(&newlab))
errx(1, "can't run when there is partition overlap.");
/* If we don't have a 'c' partition, create one. */
pp = &newlab.d_partitions[RAW_PART];
if (newlab.d_npartitions <= RAW_PART || DL_GETPSIZE(pp) == 0) {
puts("No 'c' partition found, adding one that spans the disk.");
if (newlab.d_npartitions <= RAW_PART)
newlab.d_npartitions = RAW_PART + 1;
DL_SETPOFFSET(pp, 0);
DL_SETPSIZE(pp, DL_GETDSIZE(&newlab));
pp->p_fstype = FS_UNUSED;
pp->p_fragblock = pp->p_cpg = 0;
}
#ifdef SUN_CYLCHECK
if ((newlab.d_flags & D_VENDOR) && !quiet) {
puts("This platform requires that partition offsets/sizes "
"be on cylinder boundaries.\n"
"Partition offsets/sizes will be rounded to the "
"nearest cylinder automatically.");
}
#endif
/* Save the (U|u)ndo labels and mountpoints. */
mpcopy(origmountpoints, mountpoints);
origlabel = newlab;
lastlabel = newlab;
puts("Label editor (enter '?' for help at any prompt)");
for (;;) {
fprintf(stdout, "%s%s> ", dkname,
(memcmp(&lab, &newlab, sizeof(newlab)) == 0) ? "" : "*");
if (fgets(buf, sizeof(buf), stdin) == NULL) {
putchar('\n');
buf[0] = 'q';
buf[1] = '\0';
}
if ((cmd = strtok(buf, " \t\r\n")) == NULL)
continue;
arg = strtok(NULL, " \t\r\n");
if ((*cmd != 'u') && (*cmd != 'U')) {
/*
* Save undo info in case the command tries to make
* changes but decides not to.
*/
tmplabel = lastlabel;
lastlabel = newlab;
mpcopy(tmpmountpoints, omountpoints);
mpcopy(omountpoints, mountpoints);
}
switch (*cmd) {
case '?':
case 'h':
editor_help();
break;
case 'A':
if (ioctl(f, DIOCGPDINFO, &newlab) == -1) {
warn("DIOCGPDINFO");
newlab = lastlabel;
} else {
int oquiet = quiet;
aflag = 1;
quiet = 0;
editor_allocspace(&newlab);
quiet = oquiet;
}
break;
case 'a':
editor_add(&newlab, arg);
break;
case 'b':
set_bounds(&newlab);
break;
case 'c':
editor_change(&newlab, arg);
break;
case 'D':
if (ioctl(f, DIOCGPDINFO, &newlab) == -1)
warn("DIOCGPDINFO");
else {
dflag = 1;
for (i = 0; i < MAXPARTITIONS; i++) {
free(mountpoints[i]);
mountpoints[i] = NULL;
}
}
break;
case 'd':
editor_delete(&newlab, arg);
break;
case 'e':
edit_packname(&newlab);
break;
case 'i':
set_duid(&newlab);
break;
case 'm':
editor_modify(&newlab, arg);
break;
case 'n':
if (!fstabfile) {
fputs("This option is not valid when run "
"without the -F or -f flags.\n", stderr);
break;
}
editor_name(&newlab, arg);
break;
case 'p':
display_edit(&newlab, arg ? *arg : 0);
break;
case 'l':
display(stdout, &newlab, arg ? *arg : 0, 0);
break;
case 'M': {
sig_t opipe = signal(SIGPIPE, SIG_IGN);
char *pager, *comm = NULL;
extern const u_char manpage[];
extern const int manpage_sz;
if ((pager = getenv("PAGER")) == NULL || *pager == '\0')
pager = _PATH_LESS;
if (asprintf(&comm, "gunzip -qc|%s", pager) != -1 &&
(fp = popen(comm, "w")) != NULL) {
(void) fwrite(manpage, manpage_sz, 1, fp);
pclose(fp);
} else
warn("unable to execute %s", pager);
free(comm);
(void)signal(SIGPIPE, opipe);
break;
}
case 'q':
if (donothing) {
puts("In no change mode, not writing label.");
goto done;
}
/*
* If we haven't changed the original label, and it
* wasn't a default label or an auto-allocated label,
* there is no need to do anything before exiting. Note
* that 'w' will reset dflag and aflag to allow 'q' to
* exit without further questions.
*/
if (!dflag && !aflag &&
memcmp(&lab, &newlab, sizeof(newlab)) == 0) {
puts("No label changes.");
/* Save mountpoint info. */
mpsave(&newlab);
goto done;
}
do {
arg = getstring("Write new label?",
"Write the modified label to disk?",
"y");
} while (arg && tolower((unsigned char)*arg) != 'y' &&
tolower((unsigned char)*arg) != 'n');
if (arg && tolower((unsigned char)*arg) == 'y') {
if (writelabel(f, &newlab) == 0) {
newlab = lab; /* lab now has UID info */
goto done;
}
warnx("unable to write label");
}
error = 1;
goto done;
/* NOTREACHED */
break;
case 'R':
if (aflag && resizeok)
editor_resize(&newlab, arg);
else
fputs("Resize only implemented for auto "
"allocated labels\n", stderr);
break;
case 'r': {
const struct diskchunk *chunk;
uint64_t total = 0;
/* Display free space. */
chunk = free_chunks(&newlab, -1);
for (; chunk->start != 0 || chunk->stop != 0; chunk++) {
total += CHUNKSZ(chunk);
fprintf(stderr, "Free sectors: %16llu - %16llu "
"(%16llu)\n",
chunk->start, chunk->stop - 1,
CHUNKSZ(chunk));
}
fprintf(stderr, "Total free sectors: %llu.\n", total);
break;
}
case 's':
if (arg == NULL) {
arg = getstring("Filename",
"Name of the file to save label into.",
NULL);
if (arg == NULL || *arg == '\0')
break;
}
if ((fp = fopen(arg, "w")) == NULL) {
warn("cannot open %s", arg);
} else {
display(fp, &newlab, 0, 1);
(void)fclose(fp);
}
break;
case 'U':
/*
* If we allow 'U' repeatedly, information would be
* lost. This way multiple 'U's followed by 'u' will
* undo the 'U's.
*/
if (memcmp(&newlab, &origlabel, sizeof(newlab)) ||
!mpequal(mountpoints, origmountpoints)) {
tmplabel = newlab;
newlab = origlabel;
lastlabel = tmplabel;
mpcopy(tmpmountpoints, mountpoints);
mpcopy(mountpoints, origmountpoints);
mpcopy(omountpoints, tmpmountpoints);
}
puts("Original label and mount points restored.");
break;
case 'u':
tmplabel = newlab;
newlab = lastlabel;
lastlabel = tmplabel;
mpcopy(tmpmountpoints, mountpoints);
mpcopy(mountpoints, omountpoints);
mpcopy(omountpoints, tmpmountpoints);
puts("Last change undone.");
break;
case 'w':
if (donothing) {
puts("In no change mode, not writing label.");
break;
}
/* Write label to disk. */
if (writelabel(f, &newlab) != 0)
warnx("unable to write label");
else {
dflag = aflag = 0;
newlab = lab; /* lab now has UID info */
}
break;
case 'x':
goto done;
break;
case 'z':
zero_partitions(&newlab);
break;
case '\n':
break;
default:
printf("Unknown option: %c ('?' for help)\n", *cmd);
break;
}
/*
* If no changes were made to label or mountpoints, then
* restore undo info.
*/
if (memcmp(&newlab, &lastlabel, sizeof(newlab)) == 0 &&
(mpequal(mountpoints, omountpoints))) {
lastlabel = tmplabel;
mpcopy(omountpoints, tmpmountpoints);
}
}
done:
mpfree(omountpoints, DISCARD);
mpfree(origmountpoints, DISCARD);
mpfree(tmpmountpoints, DISCARD);
return error;
}
/*
* Allocate all disk space according to standard recommendations for a
* root disk.
*/
int
editor_allocspace(struct disklabel *lp_org)
{
struct disklabel label;
struct partition *pp;
u_int64_t pstart, pend;
int i;
/* How big is the OpenBSD portion of the disk? */
find_bounds(lp_org);
resizeok = 1;
for (i = 0; i < MAXPARTITIONS; i++) {
if (i == RAW_PART)
continue;
pp = &lp_org->d_partitions[i];
if (DL_GETPSIZE(pp) == 0 || pp->p_fstype == FS_UNUSED)
continue;
pstart = DL_GETPOFFSET(pp);
pend = pstart + DL_GETPSIZE(pp);
if (((pstart >= starting_sector && pstart < ending_sector) ||
(pend > starting_sector && pend <= ending_sector)))
resizeok = 0; /* Part of OBSD area is in use! */
}
for (i = 0; i < alloc_table_nitems; i++) {
memcpy(&label, lp_org, sizeof(label));
if (allocate_space(&label, &alloc_table[i]) == 0) {
memcpy(lp_org, &label, sizeof(struct disklabel));
return 0;
}
}
return 1;
}
const struct diskchunk *
allocate_diskchunk(const struct disklabel *lp,
const struct space_allocation *sa)
{
const struct diskchunk *chunk;
static struct diskchunk largest;
uint64_t maxstop;
largest.start = largest.stop = 0;
chunk = free_chunks(lp, -1);
for (; chunk->start != 0 || chunk->stop != 0; chunk++) {
if (CHUNKSZ(chunk) > CHUNKSZ(&largest))
largest = *chunk;
}
maxstop = largest.start + DL_BLKTOSEC(lp, sa->maxsz);
if (maxstop > largest.stop)
maxstop = largest.stop;
#ifdef SUN_CYLCHECK
if (lp->d_flags & D_VENDOR) {
largest.start = ROUNDUP(largest.start, lp->d_secpercyl);
maxstop = ROUNDUP(maxstop, lp->d_secpercyl);
if (maxstop > largest.stop)
maxstop -= lp->d_secpercyl;
if (largest.start >= maxstop)
largest.start = largest.stop = maxstop = 0;
}
#endif
if (maxstop < largest.stop)
largest.stop = maxstop;
if (CHUNKSZ(&largest) < DL_BLKTOSEC(lp, sa->minsz))
return NULL;
return &largest;
}
int
allocate_partition(struct disklabel *lp, struct space_allocation *sa)
{
const struct diskchunk *chunk;
struct partition *pp;
unsigned int partno;
for (partno = 0; partno < nitems(lp->d_partitions); partno++) {
if (partno == RAW_PART)
continue;
pp = &lp->d_partitions[partno];
if (DL_GETPSIZE(pp) == 0 || pp->p_fstype == FS_UNUSED)
break;
}
if (partno >= nitems(lp->d_partitions))
return 1; /* No free partition. */
/* Find appropriate chunk of free space. */
chunk = allocate_diskchunk(lp, sa);
if (chunk == NULL)
return 1;
if (strcasecmp(sa->mp, "raid") == 0)
pp->p_fstype = FS_RAID;
else if (strcasecmp(sa->mp, "swap") == 0)
pp->p_fstype = FS_SWAP;
else if (sa->mp[0] == '/')
pp->p_fstype = FS_BSDFFS;
else
return 1;
DL_SETPSIZE(pp, chunk->stop - chunk->start);
DL_SETPOFFSET(pp, chunk->start);
if (pp->p_fstype == FS_BSDFFS && DL_GETPSIZE(pp) > 0) {
mountpoints[partno] = strdup(sa->mp);
if (mountpoints[partno] == NULL)
err(1, NULL);
if (set_fragblock(lp, partno))
return 1;
}
return 0;
}
void
allocate_physmemincr(struct space_allocation *sa)
{
u_int64_t memblks;
extern int64_t physmem;
if (physmem == 0)
return;
memblks = physmem / DEV_BSIZE;
if (strcasecmp(sa->mp, "swap") == 0) {
if (memblks < MEG(256))
sa->minsz = sa->maxsz = 2 * memblks;
else
sa->maxsz += memblks;
} else if (strcasecmp(sa->mp, "/var") == 0) {
sa->maxsz += 2 * memblks;
}
}
int
allocate_space(struct disklabel *lp, const struct alloc_table *alloc_table)
{
struct space_allocation sa[MAXPARTITIONS];
u_int64_t maxsz, xtrablks;
int i;
xtrablks = DL_SECTOBLK(lp, editor_countfree(lp));
memset(sa, 0, sizeof(sa));
for (i = 0; i < alloc_table->sz; i++) {
sa[i] = alloc_table->table[i];
if (alloc_table->table == alloc_big)
allocate_physmemincr(&sa[i]);
if (xtrablks < sa[i].minsz)
return 1; /* Too few free blocks. */
xtrablks -= sa[i].minsz;
}
sa[alloc_table->sz - 1].rate = 100; /* Last allocation is greedy. */
for (i = lp->d_npartitions; i < MAXPARTITIONS; i++) {
if (i == RAW_PART)
continue;
memset(&lp->d_partitions[i], 0, sizeof(lp->d_partitions[i]));
}
lp->d_npartitions = MAXPARTITIONS;
mpfree(mountpoints, KEEP);
for (i = 0; i < alloc_table->sz; i++) {
if (sa[i].rate == 100)
maxsz = sa[i].minsz + xtrablks;
else
maxsz = sa[i].minsz + (xtrablks / 100) * sa[i].rate;
if (maxsz < sa[i].maxsz)
sa[i].maxsz = maxsz;
if (allocate_partition(lp, &sa[i])) {
mpfree(mountpoints, KEEP);
return 1;
}
}
return 0;
}
/*
* Resize a partition, moving all subsequent partitions
*/
void
editor_resize(struct disklabel *lp, const char *p)
{
struct disklabel label;
struct partition *pp, *prev;
u_int64_t ui, sz, off;
int partno, i, flags, shrunk;
label = *lp;
if ((partno = getpartno(&label, p, "resize")) == -1)
return;
pp = &label.d_partitions[partno];
sz = DL_GETPSIZE(pp);
if (pp->p_fstype != FS_BSDFFS && pp->p_fstype != FS_SWAP) {
fputs("Cannot resize spoofed partition\n", stderr);
return;
}
flags = DO_CONVERSIONS;
ui = getuint64(lp, "[+|-]new size (with unit)",
"new size or amount to grow (+) or shrink (-) partition including "
"unit", sz, sz + editor_countfree(lp), &flags);
if (ui == CMD_ABORTED)
return;
else if (ui == CMD_BADVALUE)
return;
else if (ui == 0) {
fputs("The size must be > 0 sectors\n", stderr);
return;
}
#ifdef SUN_CYLCHECK
if (lp->d_flags & D_VENDOR)
ui = ROUNDUP(ui, lp->d_secpercyl);
#endif
if (DL_GETPOFFSET(pp) + ui > ending_sector) {
fputs("Amount too big\n", stderr);
return;
}
DL_SETPSIZE(pp, ui);
pp->p_fragblock = 0;
if (set_fragblock(&label, partno) == 1)
return;
/*
* Pack partitions above the resized partition, leaving unused
* partitions alone.
*/
shrunk = -1;
prev = pp;
for (i = partno + 1; i < MAXPARTITIONS; i++) {
if (i == RAW_PART)
continue;
pp = &label.d_partitions[i];
if (pp->p_fstype != FS_BSDFFS && pp->p_fstype != FS_SWAP)
continue;
sz = DL_GETPSIZE(pp);
if (sz == 0)
continue;
off = DL_GETPOFFSET(prev) + DL_GETPSIZE(prev);
if (off < ending_sector) {
DL_SETPOFFSET(pp, off);
if (off + DL_GETPSIZE(pp) > ending_sector) {
DL_SETPSIZE(pp, ending_sector - off);
pp->p_fragblock = 0;
if (set_fragblock(&label, i) == 1)
return;
shrunk = i;
}
} else {
fputs("Amount too big\n", stderr);
return;
}
prev = pp;
}
if (shrunk != -1)
fprintf(stderr, "Partition %c shrunk to %llu sectors to make "
"room\n", 'a' + shrunk,
DL_GETPSIZE(&label.d_partitions[shrunk]));
*lp = label;
}
/*
* Add a new partition.
*/
void
editor_add(struct disklabel *lp, const char *p)
{
struct partition *pp;
const struct diskchunk *chunk;
int partno;
u_int64_t new_offset, new_size;
chunk = free_chunks(lp, -1);
new_size = new_offset = 0;
for (; chunk->start != 0 || chunk->stop != 0; chunk++) {
if (CHUNKSZ(chunk) > new_size) {
new_size = CHUNKSZ(chunk);
new_offset = chunk->start;
}
}
#ifdef SUN_CYLCHECK
if ((lp->d_flags & D_VENDOR) && new_size < lp->d_secpercyl) {
fputs("No space left, you need to shrink a partition "
"(need at least one full cylinder)\n",
stderr);
return;
}
#endif
if (new_size == 0) {
fputs("No space left, you need to shrink a partition\n",
stderr);
return;
}
if ((partno = getpartno(lp, p, "add")) == -1)
return;
pp = &lp->d_partitions[partno];
memset(pp, 0, sizeof(*pp));
/*
* Increase d_npartitions if necessary. Ensure all new partitions are
* zero'ed to avoid inadvertent overlaps.
*/
for(; lp->d_npartitions <= partno; lp->d_npartitions++)
memset(&lp->d_partitions[lp->d_npartitions], 0, sizeof(*pp));
DL_SETPSIZE(pp, new_size);
DL_SETPOFFSET(pp, new_offset);
pp->p_fstype = partno == 1 ? FS_SWAP : FS_BSDFFS;
if (get_offset(lp, partno) == 0 &&
get_size(lp, partno) == 0 &&
get_fstype(lp, partno) == 0 &&
get_mp(lp, partno) == 0 &&
set_fragblock(lp, partno) == 0)
return;
/* Bailed out at some point, so effectively delete the partition. */
memset(pp, 0, sizeof(*pp));
}
/*
* Set the mountpoint of an existing partition ('name').
*/
void
editor_name(const struct disklabel *lp, const char *p)
{
int partno;
if ((partno = getpartno(lp, p, "name")) == -1)
return;
get_mp(lp, partno);
}
/*
* Change an existing partition.
*/
void
editor_modify(struct disklabel *lp, const char *p)
{
struct partition opp, *pp;
int partno;
if ((partno = getpartno(lp, p, "modify")) == -1)
return;
pp = &lp->d_partitions[partno];
opp = *pp;
if (get_offset(lp, partno) == 0 &&
get_size(lp, partno) == 0 &&
get_fstype(lp, partno) == 0 &&
get_mp(lp, partno) == 0 &&
set_fragblock(lp, partno) == 0)
return;
/* Bailed out at some point, so undo any changes. */
*pp = opp;
}
/*
* Delete an existing partition.
*/
void
editor_delete(struct disklabel *lp, const char *p)
{
struct partition *pp;
int partno;
if ((partno = getpartno(lp, p, "delete")) == -1)
return;
if (partno == lp->d_npartitions) {
zero_partitions(lp);
return;
}
pp = &lp->d_partitions[partno];
/* Really delete it (as opposed to just setting to "unused") */
memset(pp, 0, sizeof(*pp));
free(mountpoints[partno]);
mountpoints[partno] = NULL;
}
/*
* Change the size of an existing partition.
*/
void
editor_change(struct disklabel *lp, const char *p)
{
struct partition *pp;
int partno;
if ((partno = getpartno(lp, p, "change size")) == -1)
return;
pp = &lp->d_partitions[partno];
printf("Partition %c is currently %llu sectors in size, and can have "
"a maximum\nsize of %llu sectors.\n",
'a' + partno, DL_GETPSIZE(pp), max_partition_size(lp, partno));
/* Get new size */
get_size(lp, partno);
}
/*
* Sort the partitions based on starting offset.
* This assumes there can be no overlap.
*/
int
partition_cmp(const void *e1, const void *e2)
{
struct partition *p1 = *(struct partition **)e1;
struct partition *p2 = *(struct partition **)e2;
u_int64_t o1 = DL_GETPOFFSET(p1);
u_int64_t o2 = DL_GETPOFFSET(p2);
if (o1 < o2)
return -1;
else if (o1 > o2)
return 1;
else
return 0;
}
char *
getstring(const char *prompt, const char *helpstring, const char *oval)
{
static char buf[BUFSIZ];
int n;
buf[0] = '\0';
do {
printf("%s: [%s] ", prompt, oval ? oval : "");
if (fgets(buf, sizeof(buf), stdin) == NULL) {
buf[0] = '\0';
if (feof(stdin)) {
clearerr(stdin);
putchar('\n');
fputs("Command aborted\n", stderr);
return NULL;
}
}
n = strlen(buf);
if (n > 0 && buf[n-1] == '\n')
buf[--n] = '\0';
if (buf[0] == '?')
puts(helpstring);
else if (oval != NULL && buf[0] == '\0')
strlcpy(buf, oval, sizeof(buf));
} while (buf[0] == '?');
return &buf[0];
}
int
getpartno(const struct disklabel *lp, const char *p, const char *action)
{
char buf[2] = { '\0', '\0'};
const char *promptfmt = "partition to %s";
const char *helpfmt = "Partition must be between 'a' and '%c' "
"(excluding 'c')%s.\n";
const struct partition *pp;
char *help = NULL, *prompt = NULL;
unsigned char maxpart;
unsigned int partno;
int add, delete, inuse;
add = strcmp("add", action) == 0;
delete = strcmp("delete", action) == 0;
maxpart = 'a' - 1 + (add ? MAXPARTITIONS : lp->d_npartitions);
if (p == NULL) {
if (asprintf(&prompt, promptfmt, action) == -1 ||
asprintf(&help, helpfmt, maxpart, delete ? ", or '*'" : "")
== -1) {
fprintf(stderr, "Unable to build prompt or help\n");
goto done;
}
if (add) {
/* Default to first unused partition. */
for (partno = 0; partno < MAXPARTITIONS; partno++) {
if (partno == RAW_PART)
continue;
pp = &lp->d_partitions[partno];
if (partno >= lp->d_npartitions ||
DL_GETPSIZE(pp) == 0 ||
pp->p_fstype == FS_UNUSED) {
buf[0] = 'a' + partno;
p = buf;
break;
}
}
}
p = getstring(prompt, help, p);
free(prompt);
free(help);
if (p == NULL || *p == '\0')
goto done;
}
if (delete && strlen(p) == 1 && *p == '*')
return lp->d_npartitions;
if (strlen(p) > 1 || *p < 'a' || *p > maxpart || *p == 'c') {
fprintf(stderr, helpfmt, maxpart, delete ? ", or '*'" : "");
goto done;
}
partno = *p - 'a';
pp = &lp->d_partitions[partno];
inuse = partno < lp->d_npartitions && DL_GETPSIZE(pp) > 0 &&
pp->p_fstype != FS_UNUSED;
if ((add && !inuse) || (!add && inuse))
return partno;
fprintf(stderr, "Partition '%c' is %sin use.\n", *p,
inuse ? "" : "not ");
done:
return -1;
}
/*
* Returns
* 0 .. CMD_ABORTED - 1 ==> valid value
* CMD_BADVALUE ==> invalid value
* CMD_ABORTED ==> ^D on input
*/
u_int64_t
getnumber(const char *prompt, const char *helpstring, u_int32_t oval,
u_int32_t maxval)
{
char buf[BUFSIZ], *p;
int rslt;
long long rval;
const char *errstr;
rslt = snprintf(buf, sizeof(buf), "%u", oval);
if (rslt < 0 || (unsigned int)rslt >= sizeof(buf))
return CMD_BADVALUE;
p = getstring(prompt, helpstring, buf);
if (p == NULL)
return CMD_ABORTED;
if (strlen(p) == 0)
return oval;
rval = strtonum(p, 0, maxval, &errstr);
if (errstr != NULL) {
printf("%s must be between 0 and %u\n", prompt, maxval);
return CMD_BADVALUE;
}
return rval;
}
/*
* Returns
* 0 .. CMD_ABORTED - 1 ==> valid value
* CMD_BADVALUE ==> invalid value
* CMD_ABORTED ==> ^D on input
*/
u_int64_t
getuint64(const struct disklabel *lp, char *prompt, char *helpstring,
u_int64_t oval, u_int64_t maxval, int *flags)
{
char buf[21], *p, operator = '\0';
char *unit = NULL;
u_int64_t rval = oval;
double d;
int rslt;
rslt = snprintf(buf, sizeof(buf), "%llu", oval);
if (rslt < 0 || (unsigned int)rslt >= sizeof(buf))
goto invalid;
p = getstring(prompt, helpstring, buf);
if (p == NULL)
return CMD_ABORTED;
else if (p[0] == '\0')
rval = oval;
else if (p[0] == '*' && p[1] == '\0')
rval = maxval;
else {
if (*p == '+' || *p == '-')
operator = *p++;
if (parse_sizespec(p, &d, &unit) == -1)
goto invalid;
if (unit == NULL)
rval = d;
else if (flags != NULL && (*flags & DO_CONVERSIONS) == 0)
goto invalid;
else {
switch (tolower((unsigned char)*unit)) {
case 'b':
rval = d / lp->d_secsize;
break;
case 'c':
rval = d * lp->d_secpercyl;
break;
case '%':
rval = DL_GETDSIZE(lp) * (d / 100.0);
break;
case '&':
rval = maxval * (d / 100.0);
break;
default:
if (apply_unit(d, *unit, &rval) == -1)
goto invalid;
rval = DL_BLKTOSEC(lp, rval);
break;
}
}
/* Range check then apply [+-] operator */
if (operator == '+') {
if (CMD_ABORTED - oval > rval)
rval += oval;
else {
goto invalid;
}
} else if (operator == '-') {
if (oval >= rval)
rval = oval - rval;
else {
goto invalid;
}
}
}
if (flags != NULL) {
if (unit != NULL)
*flags |= DO_ROUNDING;
#ifdef SUN_CYLCHECK
if (lp->d_flags & D_VENDOR)
*flags |= DO_ROUNDING;
#endif
}
return rval;
invalid:
fputs("Invalid entry\n", stderr);
return CMD_BADVALUE;
}
/*
* Check for partition overlap in lp and prompt the user to resolve the overlap
* if any is found. Returns 1 if unable to resolve, else 0.
*/
int
has_overlap(struct disklabel *lp)
{
const struct partition **spp;
int i, p1, p2;
char *line = NULL;
size_t linesize = 0;
ssize_t linelen;
for (;;) {
spp = sort_partitions(lp, -1);
for (i = 0; spp[i+1] != NULL; i++) {
if (DL_GETPOFFSET(spp[i]) + DL_GETPSIZE(spp[i]) >
DL_GETPOFFSET(spp[i+1]))
break;
}
if (spp[i+1] == NULL) {
free(line);
return 0;
}
p1 = 'a' + (spp[i] - lp->d_partitions);
p2 = 'a' + (spp[i+1] - lp->d_partitions);
printf("\nError, partitions %c and %c overlap:\n", p1, p2);
printf("# %16.16s %16.16s fstype [fsize bsize cpg]\n",
"size", "offset");
display_partition(stdout, lp, p1 - 'a', 0);
display_partition(stdout, lp, p2 - 'a', 0);
for (;;) {
printf("Disable which one? (%c %c) ", p1, p2);
linelen = getline(&line, &linesize, stdin);
if (linelen == -1)
goto done;
if (linelen == 2 && (line[0] == p1 || line[0] == p2))
break;
}
lp->d_partitions[line[0] - 'a'].p_fstype = FS_UNUSED;
}
done:
putchar('\n');
free(line);
return 1;
}
void
edit_packname(struct disklabel *lp)
{
char *p;
struct disklabel oldlabel = *lp;
printf("Changing label description for %s:\n", specname);
/* pack/label id */
p = getstring("label name",
"15 char string that describes this label, usually the disk name.",
lp->d_packname);
if (p == NULL) {
*lp = oldlabel; /* undo damage */
return;
}
strncpy(lp->d_packname, p, sizeof(lp->d_packname)); /* checked */
}
const struct partition **
sort_partitions(const struct disklabel *lp, int ignore)
{
const static struct partition *spp[MAXPARTITIONS+2];
int i, npartitions;
memset(spp, 0, sizeof(spp));
for (npartitions = 0, i = 0; i < lp->d_npartitions; i++) {
if (i != ignore && lp->d_partitions[i].p_fstype != FS_UNUSED &&
DL_GETPSIZE(&lp->d_partitions[i]) != 0)
spp[npartitions++] = &lp->d_partitions[i];
}
/*
* Sort the partitions based on starting offset.
* This is safe because we guarantee no overlap.
*/
if (npartitions > 1)
if (mergesort((void *)spp, npartitions, sizeof(spp[0]),
partition_cmp))
err(4, "failed to sort partition table");
return spp;
}
/*
* Get beginning and ending sectors of the OpenBSD portion of the disk
* from the user.
*/
void
set_bounds(struct disklabel *lp)
{
u_int64_t ui, start_temp;
/* Starting sector */
for (;;) {
ui = getuint64(lp, "Starting sector",
"The start of the OpenBSD portion of the disk.",
starting_sector, DL_GETDSIZE(lp), NULL);
if (ui == CMD_ABORTED)
return;
else if (ui == CMD_BADVALUE)
; /* Try again. */
else if (ui >= DL_GETDSIZE(lp))
fprintf(stderr, "starting sector must be < %llu\n",
DL_GETDSIZE(lp));
else
break;
}
start_temp = ui;
/* Size */
for (;;) {
ui = getuint64(lp, "Size ('*' for entire disk)",
"The size of the OpenBSD portion of the disk ('*' for the "
"entire disk).", ending_sector - starting_sector,
DL_GETDSIZE(lp) - start_temp, NULL);
if (ui == CMD_ABORTED)
return;
else if (ui == CMD_BADVALUE)
; /* Try again. */
else if (ui > DL_GETDSIZE(lp) - start_temp)
fprintf(stderr, "size must be <= %llu\n",
DL_GETDSIZE(lp) - start_temp);
else
break;
}
ending_sector = start_temp + ui;
DL_SETBEND(lp, ending_sector);
starting_sector = start_temp;
DL_SETBSTART(lp, starting_sector);
}
/*
* Allow user to interactively change disklabel UID.
*/
void
set_duid(struct disklabel *lp)
{
char *s;
int i;
printf("The disklabel UID is currently: "
"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx\n",
lp->d_uid[0], lp->d_uid[1], lp->d_uid[2], lp->d_uid[3],
lp->d_uid[4], lp->d_uid[5], lp->d_uid[6], lp->d_uid[7]);
do {
s = getstring("duid", "The disklabel UID, given as a 16 "
"character hexadecimal string.", NULL);
if (s == NULL || strlen(s) == 0) {
fputs("Command aborted\n", stderr);
return;
}
i = duid_parse(lp, s);
if (i != 0)
fputs("Invalid UID entered.\n", stderr);
} while (i != 0);
}
/*
* Return a list of the "chunks" of free space available
*/
const struct diskchunk *
free_chunks(const struct disklabel *lp, int partno)
{
const struct partition **spp;
static struct diskchunk chunks[MAXPARTITIONS + 2];
u_int64_t start, stop;
int i, numchunks;
/* Sort the in-use partitions based on offset */
spp = sort_partitions(lp, partno);
/* If there are no partitions, it's all free. */
if (spp[0] == NULL) {
chunks[0].start = starting_sector;
chunks[0].stop = ending_sector;
chunks[1].start = chunks[1].stop = 0;
return chunks;
}
/* Find chunks of free space */
numchunks = 0;
if (DL_GETPOFFSET(spp[0]) > starting_sector) {
chunks[0].start = starting_sector;
chunks[0].stop = DL_GETPOFFSET(spp[0]);
numchunks++;
}
for (i = 0; spp[i] != NULL; i++) {
start = DL_GETPOFFSET(spp[i]) + DL_GETPSIZE(spp[i]);
if (start < starting_sector)
start = starting_sector;
else if (start > ending_sector)
start = ending_sector;
if (spp[i + 1] != NULL)
stop = DL_GETPOFFSET(spp[i+1]);
else
stop = ending_sector;
if (stop < starting_sector)
stop = starting_sector;
else if (stop > ending_sector)
stop = ending_sector;
if (start < stop) {
chunks[numchunks].start = start;
chunks[numchunks].stop = stop;
numchunks++;
}
}
/* Terminate and return */
chunks[numchunks].start = chunks[numchunks].stop = 0;
return chunks;
}
void
find_bounds(const struct disklabel *lp)
{
starting_sector = DL_GETBSTART(lp);
ending_sector = DL_GETBEND(lp);
if (ending_sector) {
if (verbose)
printf("Treating sectors %llu-%llu as the OpenBSD"
" portion of the disk.\nYou can use the 'b'"
" command to change this.\n\n", starting_sector,
ending_sector);
}
}
/*
* Calculate free space.
*/
u_int64_t
editor_countfree(const struct disklabel *lp)
{
const struct diskchunk *chunk;
u_int64_t freesectors = 0;
chunk = free_chunks(lp, -1);
for (; chunk->start != 0 || chunk->stop != 0; chunk++)
freesectors += CHUNKSZ(chunk);
return freesectors;
}
void
editor_help(void)
{
puts("Available commands:");
puts(
" ? | h - show help n [part] - set mount point\n"
" A - auto partition all space p [unit] - print partitions\n"
" a [part] - add partition q - quit & save changes\n"
" b - set OpenBSD boundaries R [part] - resize auto allocated partition\n"
" c [part] - change partition size r - display free space\n"
" D - reset label to default s [path] - save label to file\n"
" d [part] - delete partition U - undo all changes\n"
" e - edit label description u - undo last change\n"
" i - modify disklabel UID w - write label to disk\n"
" l [unit] - print disk label header x - exit & lose changes\n"
" M - disklabel(8) man page z - delete all partitions\n"
" m [part] - modify partition\n"
"\n"
"Suffixes can be used to indicate units other than sectors:\n"
" 'b' (bytes), 'k' (kilobytes), 'm' (megabytes), 'g' (gigabytes) 't' (terabytes)\n"
" 'c' (cylinders), '%' (% of total disk), '&' (% of free space).\n"
"Values in non-sector units are truncated to the nearest cylinder boundary.");
}
void
mpcopy(char **to, char **from)
{
int i;
for (i = 0; i < MAXPARTITIONS; i++) {
free(to[i]);
to[i] = NULL;
if (from[i] != NULL) {
to[i] = strdup(from[i]);
if (to[i] == NULL)
err(1, NULL);
}
}
}
int
mpequal(char **mp1, char **mp2)
{
int i;
for (i = 0; i < MAXPARTITIONS; i++) {
if (mp1[i] == NULL && mp2[i] == NULL)
continue;
if ((mp1[i] != NULL && mp2[i] == NULL) ||
(mp1[i] == NULL && mp2[i] != NULL) ||
(strcmp(mp1[i], mp2[i]) != 0))
return 0;
}
return 1;
}
void
mpsave(const struct disklabel *lp)
{
int i, j;
char bdev[PATH_MAX], *p;
struct mountinfo mi[MAXPARTITIONS];
FILE *fp;
u_int8_t fstype;
if (!fstabfile)
return;
memset(&mi, 0, sizeof(mi));
for (i = 0; i < MAXPARTITIONS; i++) {
fstype = lp->d_partitions[i].p_fstype;
if (mountpoints[i] != NULL || fstype == FS_SWAP) {
mi[i].mountpoint = mountpoints[i];
mi[i].partno = i;
}
}
/* Convert specname to bdev */
if (uidflag) {
snprintf(bdev, sizeof(bdev),
"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.%c",
lab.d_uid[0], lab.d_uid[1], lab.d_uid[2], lab.d_uid[3],
lab.d_uid[4], lab.d_uid[5], lab.d_uid[6], lab.d_uid[7],
specname[strlen(specname)-1]);
} else if (strncmp(_PATH_DEV, specname, sizeof(_PATH_DEV) - 1) == 0 &&
specname[sizeof(_PATH_DEV) - 1] == 'r') {
snprintf(bdev, sizeof(bdev), "%s%s", _PATH_DEV,
&specname[sizeof(_PATH_DEV)]);
} else {
if ((p = strrchr(specname, '/')) == NULL || *(++p) != 'r')
return;
*p = '\0';
snprintf(bdev, sizeof(bdev), "%s%s", specname, p + 1);
*p = 'r';
}
bdev[strlen(bdev) - 1] = '\0';
/* Sort mountpoints so we don't try to mount /usr/local before /usr */
qsort((void *)mi, MAXPARTITIONS, sizeof(struct mountinfo), micmp);
if ((fp = fopen(fstabfile, "w"))) {
for (i = 0; i < MAXPARTITIONS; i++) {
j = mi[i].partno;
fstype = lp->d_partitions[j].p_fstype;
if (fstype == FS_RAID)
continue;
if (fstype == FS_SWAP) {
fprintf(fp, "%s%c none swap sw\n", bdev, 'a'+j);
} else if (mi[i].mountpoint) {
fprintf(fp, "%s%c %s %s rw 1 %d\n", bdev,
'a' + j, mi[i].mountpoint,
fstypesnames[fstype], j == 0 ? 1 : 2);
}
}
fclose(fp);
}
}
void
mpfree(char **mp, int action)
{
int part;
if (mp == NULL)
return;
for (part = 0; part < MAXPARTITIONS; part++) {
free(mp[part]);
mp[part] = NULL;
}
if (action == DISCARD) {
free(mp);
mp = NULL;
}
}
int
get_offset(struct disklabel *lp, int partno)
{
struct partition opp, *pp = &lp->d_partitions[partno];
u_int64_t ui, offsetalign;
int flags;
flags = DO_CONVERSIONS;
ui = getuint64(lp, "offset",
"Starting sector for this partition.",
DL_GETPOFFSET(pp),
DL_GETPOFFSET(pp), &flags);
if (ui == CMD_ABORTED || ui == CMD_BADVALUE)
return 1;
#ifdef SUN_AAT0
if (partno == 0 && ui != 0) {
fprintf(stderr, "This architecture requires that "
"partition 'a' start at sector 0.\n");
return 1;
}
#endif
opp = *pp;
DL_SETPOFFSET(pp, ui);
offsetalign = 1;
if ((flags & DO_ROUNDING) != 0 && pp->p_fstype == FS_BSDFFS)
offsetalign = lp->d_secpercyl;
if (alignpartition(lp, partno, offsetalign, 1, ROUND_OFFSET_UP) == 1) {
*pp = opp;
return 1;
}
return 0;
}
int
get_size(struct disklabel *lp, int partno)
{
struct partition opp, *pp = &lp->d_partitions[partno];
u_int64_t maxsize, ui, sizealign;
int flags;
maxsize = max_partition_size(lp, partno);
flags = DO_CONVERSIONS;
ui = getuint64(lp, "size", "Size of the partition. "
"You may also say +/- amount for a relative change.",
DL_GETPSIZE(pp), maxsize, &flags);
if (ui == CMD_ABORTED || ui == CMD_BADVALUE)
return 1;
opp = *pp;
DL_SETPSIZE(pp, ui);
sizealign = 1;
if ((flags & DO_ROUNDING) != 0 && (pp->p_fstype == FS_SWAP ||
pp->p_fstype == FS_BSDFFS))
sizealign = lp->d_secpercyl;
if (alignpartition(lp, partno, 1, sizealign, ROUND_SIZE_UP) == 1) {
*pp = opp;
return 1;
}
return 0;
}
int
set_fragblock(struct disklabel *lp, int partno)
{
struct partition opp, *pp = &lp->d_partitions[partno];
u_int64_t bytes, offsetalign, sizealign;
u_int32_t frag, fsize;
if (pp->p_fstype != FS_BSDFFS)
return 0;
if (pp->p_cpg == 0)
pp->p_cpg = 1;
fsize = DISKLABELV1_FFS_FSIZE(pp->p_fragblock);
frag = DISKLABELV1_FFS_FRAG(pp->p_fragblock);
if (fsize == 0) {
fsize = 2048;
frag = 8;
bytes = DL_GETPSIZE(pp) * lp->d_secsize;
if (bytes > 128ULL * 1024 * 1024 * 1024)
fsize *= 2;
if (bytes > 512ULL * 1024 * 1024 * 1024)
fsize *= 2;
if (fsize < lp->d_secsize)
fsize = lp->d_secsize;
if (fsize > MAXBSIZE / frag)
fsize = MAXBSIZE / frag;
pp->p_fragblock = DISKLABELV1_FFS_FRAGBLOCK(fsize, frag);
}
#ifdef SUN_CYLCHECK
return 0;
#endif
opp = *pp;
sizealign = (DISKLABELV1_FFS_FRAG(pp->p_fragblock) *
DISKLABELV1_FFS_FSIZE(pp->p_fragblock)) / lp->d_secsize;
offsetalign = 1;
if (DL_GETPOFFSET(pp) != starting_sector)
offsetalign = sizealign;
if (alignpartition(lp, partno, offsetalign, sizealign, ROUND_OFFSET_UP |
ROUND_SIZE_DOWN | ROUND_SIZE_OVERLAP) == 1) {
*pp = opp;
return 1;
}
return 0;
}
int
get_fstype(struct disklabel *lp, int partno)
{
char *p;
u_int64_t ui;
struct partition *pp = &lp->d_partitions[partno];
if (pp->p_fstype < FSMAXTYPES) {
p = getstring("FS type",
"Filesystem type (usually 4.2BSD or swap)",
fstypenames[pp->p_fstype]);
if (p == NULL) {
return 1;
}
for (ui = 0; ui < FSMAXTYPES; ui++) {
if (!strcasecmp(p, fstypenames[ui])) {
pp->p_fstype = ui;
break;
}
}
if (ui >= FSMAXTYPES) {
printf("Unrecognized filesystem type '%s', treating "
"as 'unknown'\n", p);
pp->p_fstype = FS_OTHER;
}
} else {
for (;;) {
ui = getnumber("FS type (decimal)",
"Filesystem type as a decimal number; usually 7 "
"(4.2BSD) or 1 (swap).",
pp->p_fstype, UINT8_MAX);
if (ui == CMD_ABORTED)
return 1;
else if (ui == CMD_BADVALUE)
; /* Try again. */
else
break;
}
pp->p_fstype = ui;
}
return 0;
}
int
get_mp(const struct disklabel *lp, int partno)
{
const struct partition *pp = &lp->d_partitions[partno];
char *p;
int i;
if (fstabfile == NULL ||
pp->p_fstype == FS_UNUSED ||
pp->p_fstype == FS_SWAP ||
pp->p_fstype == FS_BOOT ||
pp->p_fstype == FS_OTHER ||
pp->p_fstype == FS_RAID) {
/* No fstabfile, no names. Not all fstypes can be named */
return 0;
}
for (;;) {
p = getstring("mount point",
"Where to mount this filesystem (ie: / /var /usr)",
mountpoints[partno] ? mountpoints[partno] : "none");
if (p == NULL)
return 1;
if (strcasecmp(p, "none") == 0) {
free(mountpoints[partno]);
mountpoints[partno] = NULL;
break;
}
for (i = 0; i < MAXPARTITIONS; i++)
if (mountpoints[i] != NULL && i != partno &&
strcmp(p, mountpoints[i]) == 0)
break;
if (i < MAXPARTITIONS) {
fprintf(stderr, "'%c' already being mounted at "
"'%s'\n", 'a'+i, p);
break;
}
if (*p == '/') {
/* XXX - might as well realloc */
free(mountpoints[partno]);
if ((mountpoints[partno] = strdup(p)) == NULL)
err(1, NULL);
break;
}
fputs("Mount points must start with '/'\n", stderr);
}
return 0;
}
int
micmp(const void *a1, const void *a2)
{
struct mountinfo *mi1 = (struct mountinfo *)a1;
struct mountinfo *mi2 = (struct mountinfo *)a2;
/* We want all the NULLs at the end... */
if (mi1->mountpoint == NULL && mi2->mountpoint == NULL)
return 0;
else if (mi1->mountpoint == NULL)
return 1;
else if (mi2->mountpoint == NULL)
return -1;
else
return strcmp(mi1->mountpoint, mi2->mountpoint);
}
void
zero_partitions(struct disklabel *lp)
{
memset(lp->d_partitions, 0, sizeof(lp->d_partitions));
DL_SETPSIZE(&lp->d_partitions[RAW_PART], DL_GETDSIZE(lp));
mpfree(mountpoints, KEEP);
}
u_int64_t
max_partition_size(const struct disklabel *lp, int partno)
{
const struct diskchunk *chunk;
u_int64_t maxsize = 0, offset;
chunk = free_chunks(lp, partno);
offset = DL_GETPOFFSET(&lp->d_partitions[partno]);
for (; chunk->start != 0 || chunk->stop != 0; chunk++) {
if (offset < chunk->start || offset >= chunk->stop)
continue;
maxsize = chunk->stop - offset;
break;
}
return maxsize;
}
void
psize(u_int64_t sz, char unit, const struct disklabel *lp)
{
double d = scale(sz, unit, lp);
if (d < 0)
printf("%llu", sz);
else
printf("%.*f%c", unit == 'B' ? 0 : 1, d, unit);
}
void
display_edit(const struct disklabel *lp, char unit)
{
u_int64_t fr;
int i;
fr = editor_countfree(lp);
unit = canonical_unit(lp, unit);
printf("OpenBSD area: ");
psize(starting_sector, 0, lp);
printf("-");
psize(ending_sector, 0, lp);
printf("; size: ");
psize(ending_sector - starting_sector, unit, lp);
printf("; free: ");
psize(fr, unit, lp);
printf("\n# %16.16s %16.16s fstype [fsize bsize cpg]\n",
"size", "offset");
for (i = 0; i < lp->d_npartitions; i++)
display_partition(stdout, lp, i, unit);
}
void
parse_autotable(char *filename)
{
FILE *cfile;
size_t linesize = 0;
char *line = NULL, *buf, *t;
uint idx = 0, pctsum = 0;
struct space_allocation *sa;
if (strcmp(filename, "-") == 0)
cfile = stdin;
else if ((cfile = fopen(filename, "r")) == NULL)
err(1, "%s", filename);
if ((alloc_table = calloc(1, sizeof(struct alloc_table))) == NULL)
err(1, NULL);
alloc_table_nitems = 1;
while (getline(&line, &linesize, cfile) != -1) {
if ((alloc_table[0].table = reallocarray(alloc_table[0].table,
idx + 1, sizeof(*sa))) == NULL)
err(1, NULL);
sa = &(alloc_table[0].table[idx]);
memset(sa, 0, sizeof(*sa));
idx++;
buf = line;
if ((sa->mp = get_token(&buf)) == NULL ||
(sa->mp[0] != '/' && strcasecmp(sa->mp, "swap") &&
strcasecmp(sa->mp, "raid")))
errx(1, "%s: parse error on line %u", filename, idx);
if ((t = get_token(&buf)) == NULL ||
parse_sizerange(t, &sa->minsz, &sa->maxsz) == -1)
errx(1, "%s: parse error on line %u", filename, idx);
if ((t = get_token(&buf)) != NULL &&
parse_pct(t, &sa->rate) == -1)
errx(1, "%s: parse error on line %u", filename, idx);
if (sa->minsz > sa->maxsz)
errx(1, "%s: min size > max size on line %u", filename,
idx);
pctsum += sa->rate;
}
if (pctsum > 100)
errx(1, "%s: sum of extra space allocation > 100%%", filename);
alloc_table[0].sz = idx;
free(line);
fclose(cfile);
}
char *
get_token(char **s)
{
char *p, *r;
size_t tlen = 0;
p = *s;
while (**s != '\0' && !isspace((u_char)**s)) {
(*s)++;
tlen++;
}
if (tlen == 0)
return NULL;
/* eat whitespace */
while (isspace((u_char)**s))
(*s)++;
if ((r = strndup(p, tlen)) == NULL)
err(1, NULL);
return r;
}
int
apply_unit(double val, u_char unit, u_int64_t *n)
{
u_int64_t factor = 1;
switch (tolower(unit)) {
case 't':
factor *= 1024;
/* FALLTHROUGH */
case 'g':
factor *= 1024;
/* FALLTHROUGH */
case 'm':
factor *= 1024;
/* FALLTHROUGH */
case 'k':
factor *= 1024;
break;
default:
return -1;
}
val *= factor / DEV_BSIZE;
if (val > (double)ULLONG_MAX)
return -1;
*n = val;
return 0;
}
int
parse_sizespec(const char *buf, double *val, char **unit)
{
errno = 0;
*val = strtod(buf, unit);
if (errno == ERANGE || *val < 0 || *val > (double)ULLONG_MAX)
return -1; /* too big/small */
if (*val == 0 && *unit == buf)
return -1; /* No conversion performed. */
if (*unit != NULL && *unit[0] == '\0')
*unit = NULL;
return 0;
}
int
parse_sizerange(char *buf, u_int64_t *min, u_int64_t *max)
{
char *p, *unit1 = NULL, *unit2 = NULL;
double val1 = 0, val2 = 0;
if (strcmp(buf, "*") == 0) {
*min = 0;
*max = UINT64_MAX;
goto done;
}
if ((p = strchr(buf, '-')) != NULL) {
p[0] = '\0';
p++;
}
*max = 0;
if (parse_sizespec(buf, &val1, &unit1) == -1)
return -1;
if (p != NULL && p[0] != '\0') {
if (p[0] == '*')
*max = UINT64_MAX;
else
if (parse_sizespec(p, &val2, &unit2) == -1)
return -1;
}
if (unit1 == NULL && (unit1 = unit2) == NULL)
return -1;
if (apply_unit(val1, unit1[0], min) == -1)
return -1;
if (val2 > 0) {
if (apply_unit(val2, unit2[0], max) == -1)
return -1;
} else
if (*max == 0)
*max = *min;
done:
free(buf);
return 0;
}
int
parse_pct(char *buf, int *n)
{
const char *errstr;
if (buf[strlen(buf) - 1] == '%')
buf[strlen(buf) - 1] = '\0';
*n = strtonum(buf, 0, 100, &errstr);
if (errstr) {
warnx("parse percent %s: %s", buf, errstr);
return -1;
}
free(buf);
return 0;
}
int
alignpartition(struct disklabel *lp, int partno, u_int64_t startalign,
u_int64_t stopalign, int flags)
{
struct partition *pp = &lp->d_partitions[partno];
const struct diskchunk *chunk;
u_int64_t start, stop, maxstop;
start = DL_GETPOFFSET(pp);
if ((flags & ROUND_OFFSET_UP) == ROUND_OFFSET_UP)
start = ROUNDUP(start, startalign);
else if ((flags & ROUND_OFFSET_DOWN) == ROUND_OFFSET_DOWN)
start = ROUNDDOWN(start, startalign);
/* Find the chunk that contains 'start'. */
chunk = free_chunks(lp, partno);
for (; chunk->start != 0 || chunk->stop != 0; chunk++) {
if (start >= chunk->start && start < chunk->stop)
break;
}
if (chunk->stop == 0) {
fprintf(stderr, "'%c' aligned offset %llu lies outside "
"the OpenBSD bounds or inside another partition\n",
'a' + partno, start);
return 1;
}
/* Calculate the new 'stop' sector, the sector after the partition. */
if ((flags & ROUND_SIZE_OVERLAP) == 0)
maxstop = ROUNDDOWN(chunk->stop, stopalign);
else
maxstop = ROUNDDOWN(ending_sector, stopalign);
stop = DL_GETPOFFSET(pp) + DL_GETPSIZE(pp);
if ((flags & ROUND_SIZE_UP) == ROUND_SIZE_UP)
stop = ROUNDUP(stop, stopalign);
else if ((flags & ROUND_SIZE_DOWN) == ROUND_SIZE_DOWN)
stop = ROUNDDOWN(stop, stopalign);
if (stop > maxstop)
stop = maxstop;
if (stop <= start) {
fprintf(stderr, "not enough space\n");
return 1;
}
if (start != DL_GETPOFFSET(pp))
DL_SETPOFFSET(pp, start);
if (stop != DL_GETPOFFSET(pp) + DL_GETPSIZE(pp))
DL_SETPSIZE(pp, stop - start);
return 0;
}
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