+/*
+ * sfdisk version 3.0 - aeb - 950813
+ *
+ * Copyright (C) 1995 Andries E. Brouwer (aeb@cwi.nl)
+ *
+ * This program is free software. You can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation: either Version 1
+ * or (at your option) any later version.
+ *
+ * A.V. Le Blanc (LeBlanc@mcc.ac.uk) wrote Linux fdisk 1992-1994,
+ * patched by various people (faith@cs.unc.edu, martin@cs.unc.edu,
+ * leisner@sdsp.mc.xerox.com, esr@snark.thyrsus.com, aeb@cwi.nl)
+ * 1993-1995, with version numbers (as far as I have seen) 0.93 - 2.0e.
+ * This program had (head,sector,cylinder) as basic unit, and was
+ * (therefore) broken in several ways for the use on larger disks -
+ * for example, my last patch (from 2.0d to 2.0e) was required
+ * to allow a partition to cross cylinder 8064, and to write an
+ * extended partition past the 4GB mark.
+ *
+ * The current program is a rewrite from scratch, and I started a
+ * version numbering at 3.0.
+ * Andries Brouwer, aeb@cwi.nl, 950813
+ *
+ * Well, a good user interface is still lacking. On the other hand,
+ * many configurations cannot be handled by any other fdisk.
+ * I changed the name to sfdisk to prevent confusion. - aeb, 970501
+ *
+ * Changes:
+ * 19990319 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> - i18n
+ * 20040428 - Jeroen Dobbelaere <jeroen.dobbelaere@acunia.com> - added PACKED
+ * 20040824 - David A. Wheeler <dwheeler@dwheeler.com> - warnings to stderr
+ */
+
+#define PROGNAME "sfdisk"
+#define VERSION "3.08"
+#define DATE "040824"
+
+#include <stdio.h>
+#include <stdlib.h> /* atoi, free */
+#include <stdarg.h> /* varargs */
+#include <unistd.h> /* read, write */
+#include <fcntl.h> /* O_RDWR */
+#include <errno.h> /* ERANGE */
+#include <string.h> /* index() */
+#include <ctype.h>
+#include <getopt.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/utsname.h>
+#include <linux/unistd.h> /* _syscall */
+#include "nls.h"
+#include "common.h"
+
+#define SIZE(a) (sizeof(a)/sizeof(a[0]))
+
+/*
+ * Table of contents:
+ * A. About seeking
+ * B. About sectors
+ * C. About heads, sectors and cylinders
+ * D. About system Ids
+ * E. About partitions
+ * F. The standard input
+ * G. The command line
+ * H. Listing the current situation
+ * I. Writing the new situation
+ */
+int exit_status = 0;
+
+int force = 0; /* 1: do what I say, even if it is stupid ... */
+int quiet = 0; /* 1: suppress all warnings */
+/* IA-64 gcc spec file currently does -DLinux... */
+#undef Linux
+int Linux = 0; /* 1: suppress warnings irrelevant for Linux */
+int DOS = 0; /* 1: shift extended partitions by #sectors, not 1 */
+int DOS_extended = 0; /* 1: use starting cylinder boundary of extd partn */
+int dump = 0; /* 1: list in a format suitable for later input */
+int verify = 0; /* 1: check that listed partition is reasonable */
+int no_write = 0; /* 1: do not actually write to disk */
+int no_reread = 0; /* 1: skip the BLKRRPART ioctl test at startup */
+int leave_last = 0; /* 1: don't allocate the last cylinder */
+int opt_list = 0;
+char *save_sector_file = NULL;
+char *restore_sector_file = NULL;
+
+static void
+do_warn(char *s, ...) {
+ va_list p;
+
+ va_start(p, s);
+ fflush(stdout);
+ vfprintf(stderr, s, p);
+ fflush(stderr);
+ va_end(p);
+}
+
+static void
+warn(char *s, ...) {
+ va_list p;
+
+ va_start(p, s);
+ if (!quiet) {
+ fflush(stdout);
+ vfprintf(stderr, s, p);
+ fflush(stderr);
+ }
+ va_end(p);
+}
+
+static void
+error(char *s, ...) {
+ va_list p;
+
+ va_start(p, s);
+ fflush(stdout);
+ fprintf(stderr, "\n" PROGNAME ": ");
+ vfprintf(stderr, s, p);
+ fflush(stderr);
+ va_end(p);
+}
+
+static void
+fatal(char *s, ...) {
+ va_list p;
+
+ va_start(p, s);
+ fflush(stdout);
+ fprintf(stderr, "\n" PROGNAME ": ");
+ vfprintf(stderr, s, p);
+ fflush(stderr);
+ va_end(p);
+ exit(1);
+}
+
+/*
+ * GCC nonsense - needed for GCC 3.4.x with -O2
+ *
+ * Maybe just test with #if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 4) ?
+ */
+#ifndef __GNUC_PREREQ
+#define __GNUC_PREREQ(x,y) 0
+#endif
+#if __GNUC_PREREQ(3,4)
+#define __attribute__used __attribute__ ((used))
+#else
+#define __attribute__used
+#endif
+
+/*
+ * arm needs PACKED - use it everywhere?
+ */
+#if defined(__GNUC__) && (defined(__arm__) || defined(__alpha__))
+# define PACKED __attribute__ ((packed))
+#else
+# define PACKED
+#endif
+
+
+/*
+ * A. About seeking
+ */
+
+/*
+ * sseek: seek to specified sector - return 0 on failure
+ *
+ * For >4GB disks lseek needs a > 32bit arg, and we have to use llseek.
+ * On the other hand, a 32 bit sector number is OK until 2TB.
+ * The routines _llseek and sseek below are the only ones that
+ * know about the loff_t type.
+ *
+ * Note: we use 512-byte sectors here, irrespective of the hardware ss.
+ */
+#undef use_lseek
+#if defined (__alpha__) || defined (__ia64__) || defined (__x86_64__) || defined (__s390x__)
+#define use_lseek
+#endif
+
+#ifndef use_lseek
+static __attribute__used
+int _llseek (unsigned int fd, ulong hi, ulong lo,
+ loff_t *res, unsigned int wh) {
+ return syscall (__NR__llseek, fd, hi, lo, res, wh);
+}
+#endif
+
+static int
+sseek(char *dev, unsigned int fd, unsigned long s) {
+ loff_t in, out;
+ in = ((loff_t) s << 9);
+ out = 1;
+
+#ifndef use_lseek
+ if (_llseek (fd, in>>32, in & 0xffffffff, &out, SEEK_SET) != 0) {
+#else
+ if ((out = lseek(fd, in, SEEK_SET)) != in) {
+#endif
+ perror("llseek");
+ error(_("seek error on %s - cannot seek to %lu\n"), dev, s);
+ return 0;
+ }
+
+ if (in != out) {
+ error(_("seek error: wanted 0x%08x%08x, got 0x%08x%08x\n"),
+ (unsigned int)(in>>32), (unsigned int)(in & 0xffffffff),
+ (unsigned int)(out>>32), (unsigned int)(out & 0xffffffff));
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * B. About sectors
+ */
+
+/*
+ * We preserve all sectors read in a chain - some of these will
+ * have to be modified and written back.
+ */
+struct sector {
+ struct sector *next;
+ unsigned long sectornumber;
+ int to_be_written;
+ char data[512];
+} *sectorhead;
+
+static void
+free_sectors(void) {
+ struct sector *s;
+
+ while (sectorhead) {
+ s = sectorhead;
+ sectorhead = s->next;
+ free(s);
+ }
+}
+
+static struct sector *
+get_sector(char *dev, int fd, unsigned long sno) {
+ struct sector *s;
+
+ for(s = sectorhead; s; s = s->next)
+ if (s->sectornumber == sno)
+ return s;
+
+ if (!sseek(dev, fd, sno))
+ return 0;
+
+ if (!(s = (struct sector *) malloc(sizeof(struct sector))))
+ fatal(_("out of memory - giving up\n"));
+
+ if (read(fd, s->data, sizeof(s->data)) != sizeof(s->data)) {
+ if (errno) /* 0 in case we read past end-of-disk */
+ perror("read");
+ error(_("read error on %s - cannot read sector %lu\n"), dev, sno);
+ free(s);
+ return 0;
+ }
+
+ s->next = sectorhead;
+ sectorhead = s;
+ s->sectornumber = sno;
+ s->to_be_written = 0;
+
+ return s;
+}
+
+static int
+msdos_signature (struct sector *s) {
+ unsigned char *data = s->data;
+ if (data[510] == 0x55 && data[511] == 0xaa)
+ return 1;
+ error(_("ERROR: sector %lu does not have an msdos signature\n"),
+ s->sectornumber);
+ return 0;
+}
+
+static int
+write_sectors(char *dev, int fd) {
+ struct sector *s;
+
+ for (s = sectorhead; s; s = s->next)
+ if (s->to_be_written) {
+ if (!sseek(dev, fd, s->sectornumber))
+ return 0;
+ if (write(fd, s->data, sizeof(s->data)) != sizeof(s->data)) {
+ perror("write");
+ error(_("write error on %s - cannot write sector %lu\n"),
+ dev, s->sectornumber);
+ return 0;
+ }
+ s->to_be_written = 0;
+ }
+ return 1;
+}
+
+static void
+ulong_to_chars(unsigned long u, char *uu) {
+ int i;
+
+ for(i=0; i<4; i++) {
+ uu[i] = (u & 0xff);
+ u >>= 8;
+ }
+}
+
+static unsigned long
+chars_to_ulong(unsigned char *uu) {
+ int i;
+ unsigned long u = 0;
+
+ for(i=3; i>=0; i--)
+ u = (u << 8) | uu[i];
+ return u;
+}
+
+static int
+save_sectors(char *dev, int fdin) {
+ struct sector *s;
+ char ss[516];
+ int fdout;
+
+ fdout = open(save_sector_file, O_WRONLY | O_CREAT, 0444);
+ if (fdout < 0) {
+ perror(save_sector_file);
+ error(_("cannot open partition sector save file (%s)\n"),
+ save_sector_file);
+ return 0;
+ }
+
+ for (s = sectorhead; s; s = s->next)
+ if (s->to_be_written) {
+ ulong_to_chars(s->sectornumber, ss);
+ if (!sseek(dev, fdin, s->sectornumber))
+ return 0;
+ if (read(fdin, ss+4, 512) != 512) {
+ perror("read");
+ error(_("read error on %s - cannot read sector %lu\n"),
+ dev, s->sectornumber);
+ return 0;
+ }
+ if (write(fdout, ss, sizeof(ss)) != sizeof(ss)) {
+ perror("write");
+ error(_("write error on %s\n"), save_sector_file);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static void reread_disk_partition(char *dev, int fd);
+
+static int
+restore_sectors(char *dev) {
+ int fdin, fdout, ct;
+ struct stat statbuf;
+ char *ss0, *ss;
+ unsigned long sno;
+
+ if (stat(restore_sector_file, &statbuf) < 0) {
+ perror(restore_sector_file);
+ error(_("cannot stat partition restore file (%s)\n"),
+ restore_sector_file);
+ return 0;
+ }
+ if (statbuf.st_size % 516) {
+ error(_("partition restore file has wrong size - not restoring\n"));
+ return 0;
+ }
+ if (!(ss = (char *) malloc(statbuf.st_size))) {
+ error(_("out of memory?\n"));
+ return 0;
+ }
+ fdin = open(restore_sector_file, O_RDONLY);
+ if (fdin < 0) {
+ perror(restore_sector_file);
+ error(_("cannot open partition restore file (%s)\n"),
+ restore_sector_file);
+ return 0;
+ }
+ if (read(fdin, ss, statbuf.st_size) != statbuf.st_size) {
+ perror("read");
+ error(_("error reading %s\n"), restore_sector_file);
+ return 0;
+ }
+
+ fdout = open(dev, O_WRONLY);
+ if (fdout < 0) {
+ perror(dev);
+ error(_("cannot open device %s for writing\n"), dev);
+ return 0;
+ }
+
+ ss0 = ss;
+ ct = statbuf.st_size/516;
+ while(ct--) {
+ sno = chars_to_ulong(ss);
+ if (!sseek(dev, fdout, sno))
+ return 0;
+ if (write(fdout, ss+4, 512) != 512) {
+ perror(dev);
+ error(_("error writing sector %lu on %s\n"), sno, dev);
+ return 0;
+ }
+ ss += 516;
+ }
+ free(ss0);
+
+ reread_disk_partition(dev, fdout);
+
+ return 1;
+}
+
+/*
+ * C. About heads, sectors and cylinders
+ */
+
+/*
+ * <linux/hdreg.h> defines HDIO_GETGEO and
+ * struct hd_geometry {
+ * unsigned char heads;
+ * unsigned char sectors;
+ * unsigned short cylinders;
+ * unsigned long start;
+ * };
+ *
+ * For large disks g.cylinders is truncated, so we use BLKGETSIZE.
+ */
+
+/*
+ * We consider several geometries for a disk:
+ * B - the BIOS geometry, gotten from the kernel via HDIO_GETGEO
+ * F - the fdisk geometry
+ * U - the user-specified geometry
+ *
+ * 0 means unspecified / unknown
+ */
+struct geometry {
+ unsigned long long total_size; /* in sectors */
+ unsigned long cylindersize; /* in sectors */
+ unsigned long heads, sectors, cylinders;
+ unsigned long start;
+} B, F, U;
+
+static struct geometry
+get_geometry(char *dev, int fd, int silent) {
+ struct hd_geometry g;
+ unsigned long cyls;
+ unsigned long long sectors;
+ struct geometry R;
+
+ if (ioctl(fd, HDIO_GETGEO, &g)) {
+ g.heads = g.sectors = g.cylinders = g.start = 0;
+ if (!silent)
+ do_warn(_("Disk %s: cannot get geometry\n"), dev);
+ }
+
+ R.start = g.start;
+ R.heads = g.heads;
+ R.sectors = g.sectors;
+ R.cylindersize = R.heads * R.sectors;
+ R.cylinders = 0;
+ R.total_size = 0;
+
+ if (disksize(fd, §ors)) {
+ /* maybe an ordinary file */
+ struct stat s;
+
+ if (fstat(fd, &s) == 0 && S_ISREG(s.st_mode))
+ R.total_size = (s.st_size >> 9);
+ else if (!silent)
+ do_warn(_("Disk %s: cannot get size\n"), dev);
+ } else
+ R.total_size = sectors;
+
+ if (R.cylindersize && R.total_size) {
+ sectors /= R.cylindersize;
+ cyls = sectors;
+ if (cyls != sectors)
+ cyls = ~0;
+ R.cylinders = cyls;
+ }
+
+ return R;
+}
+
+static void
+get_cylindersize(char *dev, int fd, int silent) {
+ struct geometry R;
+
+ R = get_geometry(dev, fd, silent);
+
+ B.heads = (U.heads ? U.heads : R.heads);
+ B.sectors = (U.sectors ? U.sectors : R.sectors);
+ B.cylinders = (U.cylinders ? U.cylinders : R.cylinders);
+
+ B.cylindersize = B.heads * B.sectors;
+ B.total_size = R.total_size;
+
+ if (B.cylinders == 0 && B.cylindersize != 0)
+ B.cylinders = B.total_size / B.cylindersize;
+
+ if (R.start && !force) {
+ warn(
+ _("Warning: start=%lu - this looks like a partition rather than\n"
+ "the entire disk. Using fdisk on it is probably meaningless.\n"
+ "[Use the --force option if you really want this]\n"), R.start);
+ exit(1);
+ }
+#if 0
+ if (R.heads && B.heads != R.heads)
+ warn(_("Warning: HDIO_GETGEO says that there are %lu heads\n"),
+ R.heads);
+ if (R.sectors && B.sectors != R.sectors)
+ warn(_("Warning: HDIO_GETGEO says that there are %lu sectors\n"),
+ R.sectors);
+ if (R.cylinders && B.cylinders != R.cylinders
+ && B.cylinders < 65536 && R.cylinders < 65536)
+ warn(_("Warning: BLKGETSIZE/HDIO_GETGEO says that there are %lu cylinders\n"),
+ R.cylinders);
+#endif
+
+ if (B.sectors > 63)
+ warn(_("Warning: unlikely number of sectors (%lu) - usually at most 63\n"
+ "This will give problems with all software that uses C/H/S addressing.\n"),
+ B.sectors);
+ if (!silent)
+ printf(_("\nDisk %s: %lu cylinders, %lu heads, %lu sectors/track\n"),
+ dev, B.cylinders, B.heads, B.sectors);
+}
+
+typedef struct { unsigned char h,s,c; } PACKED chs; /* has some c bits in s */
+chs zero_chs = { 0,0,0 };
+
+typedef struct { unsigned long h,s,c; } longchs;
+longchs zero_longchs;
+
+static chs
+longchs_to_chs (longchs aa, struct geometry G) {
+ chs a;
+
+ if (aa.h < 256 && aa.s < 64 && aa.c < 1024) {
+ a.h = aa.h;
+ a.s = aa.s | ((aa.c >> 2) & 0xc0);
+ a.c = (aa.c & 0xff);
+ } else if (G.heads && G.sectors) {
+ a.h = G.heads - 1;
+ a.s = G.sectors | 0xc0;
+ a.c = 0xff;
+ } else
+ a = zero_chs;
+ return a;
+}
+
+static longchs
+chs_to_longchs (chs a) {
+ longchs aa;
+
+ aa.h = a.h;
+ aa.s = (a.s & 0x3f);
+ aa.c = (a.s & 0xc0);
+ aa.c = (aa.c << 2) + a.c;
+ return aa;
+}
+
+static longchs
+ulong_to_longchs (unsigned long sno, struct geometry G) {
+ longchs aa;
+
+ if (G.heads && G.sectors && G.cylindersize) {
+ aa.s = 1 + sno % G.sectors;
+ aa.h = (sno / G.sectors) % G.heads;
+ aa.c = sno / G.cylindersize;
+ return aa;
+ } else {
+ return zero_longchs;
+ }
+}
+
+static chs
+ulong_to_chs (unsigned long sno, struct geometry G) {
+ return longchs_to_chs(ulong_to_longchs(sno, G), G);
+}
+
+#if 0
+static unsigned long
+longchs_to_ulong (longchs aa, struct geometry G) {
+ return (aa.c*G.cylindersize + aa.h*G.sectors + aa.s - 1);
+}
+
+static unsigned long
+chs_to_ulong (chs a, struct geometry G) {
+ return longchs_to_ulong(chs_to_longchs(a), G);
+}
+#endif
+
+static int
+is_equal_chs (chs a, chs b) {
+ return (a.h == b.h && a.s == b.s && a.c == b.c);
+}
+
+static int
+chs_ok (chs a, char *v, char *w) {
+ longchs aa = chs_to_longchs(a);
+ int ret = 1;
+
+ if (is_equal_chs(a, zero_chs))
+ return 1;
+ if (B.heads && aa.h >= B.heads) {
+ warn(_("%s of partition %s has impossible value for head: "
+ "%lu (should be in 0-%lu)\n"), w, v, aa.h, B.heads-1);
+ ret = 0;
+ }
+ if (B.sectors && (aa.s == 0 || aa.s > B.sectors)) {
+ warn(_("%s of partition %s has impossible value for sector: "
+ "%lu (should be in 1-%lu)\n"), w, v, aa.s, B.sectors);
+ ret = 0;
+ }
+ if (B.cylinders && aa.c >= B.cylinders) {
+ warn(_("%s of partition %s has impossible value for cylinders: "
+ "%lu (should be in 0-%lu)\n"), w, v, aa.c, B.cylinders-1);
+ ret = 0;
+ }
+ return ret;
+}
+
+/*
+ * D. About system Ids
+ */
+
+#define EMPTY_PARTITION 0
+#define EXTENDED_PARTITION 5
+#define WIN98_EXTENDED 0x0f
+#define DM6_AUX1PARTITION 0x51
+#define DM6_AUX3PARTITION 0x53
+#define DM6_PARTITION 0x54
+#define EZD_PARTITION 0x55
+#define LINUX_SWAP 0x82
+#define LINUX_NATIVE 0x83
+#define LINUX_EXTENDED 0x85
+#define BSD_PARTITION 0xa5
+#define NETBSD_PARTITION 0xa9
+
+/* List of partition types now in i386_sys_types.c */
+
+static const char *
+sysname(unsigned char type) {
+ struct systypes *s;
+
+ for (s = i386_sys_types; s->name; s++)
+ if (s->type == type)
+ return _(s->name);
+ return _("Unknown");
+}
+
+static void
+list_types(void) {
+ struct systypes *s;
+
+ printf(_("Id Name\n\n"));
+ for (s = i386_sys_types; s->name; s++)
+ printf("%2x %s\n", s->type, _(s->name));
+}
+
+static int
+is_extended(unsigned char type) {
+ return (type == EXTENDED_PARTITION
+ || type == LINUX_EXTENDED
+ || type == WIN98_EXTENDED);
+}
+
+static int
+is_bsd(unsigned char type) {
+ return (type == BSD_PARTITION || type == NETBSD_PARTITION);
+}
+
+/*
+ * E. About partitions
+ */
+
+/* MS/DOS partition */
+
+struct partition {
+ unsigned char bootable; /* 0 or 0x80 */
+ chs begin_chs;
+ unsigned char sys_type;
+ chs end_chs;
+ unsigned int start_sect; /* starting sector counting from 0 */
+ unsigned int nr_sects; /* nr of sectors in partition */
+} PACKED;
+
+/* Unfortunately, partitions are not aligned, and non-Intel machines
+ are unhappy with non-aligned integers. So, we need a copy by hand. */
+static int
+copy_to_int(unsigned char *cp) {
+ unsigned int m;
+
+ m = *cp++;
+ m += (*cp++ << 8);
+ m += (*cp++ << 16);
+ m += (*cp++ << 24);
+ return m;
+}
+
+static void
+copy_from_int(int m, char *cp) {
+ *cp++ = (m & 0xff); m >>= 8;
+ *cp++ = (m & 0xff); m >>= 8;
+ *cp++ = (m & 0xff); m >>= 8;
+ *cp++ = (m & 0xff);
+}
+
+static void
+copy_to_part(char *cp, struct partition *p) {
+ p->bootable = *cp++;
+ p->begin_chs.h = *cp++;
+ p->begin_chs.s = *cp++;
+ p->begin_chs.c = *cp++;
+ p->sys_type = *cp++;
+ p->end_chs.h = *cp++;
+ p->end_chs.s = *cp++;
+ p->end_chs.c = *cp++;
+ p->start_sect = copy_to_int(cp);
+ p->nr_sects = copy_to_int(cp+4);
+}
+
+static void
+copy_from_part(struct partition *p, char *cp) {
+ *cp++ = p->bootable;
+ *cp++ = p->begin_chs.h;
+ *cp++ = p->begin_chs.s;
+ *cp++ = p->begin_chs.c;
+ *cp++ = p->sys_type;
+ *cp++ = p->end_chs.h;
+ *cp++ = p->end_chs.s;
+ *cp++ = p->end_chs.c;
+ copy_from_int(p->start_sect, cp);
+ copy_from_int(p->nr_sects, cp+4);
+}
+
+/* Roughly speaking, Linux doesn't use any of the above fields except
+ for partition type, start sector and number of sectors. (However,
+ see also linux/drivers/scsi/fdomain.c.)
+ The only way partition type is used (in the kernel) is the comparison
+ for equality with EXTENDED_PARTITION (and these Disk Manager types). */
+
+struct part_desc {
+ unsigned long start;
+ unsigned long size;
+ unsigned long sector, offset; /* disk location of this info */
+ struct partition p;
+ struct part_desc *ep; /* extended partition containing this one */
+ int ptype;
+#define DOS_TYPE 0
+#define BSD_TYPE 1
+} zero_part_desc;
+
+static struct part_desc *
+outer_extended_partition(struct part_desc *p) {
+ while (p->ep)
+ p = p->ep;
+ return p;
+}
+
+static int
+is_parent(struct part_desc *pp, struct part_desc *p) {
+ while (p) {
+ if (pp == p)
+ return 1;
+ p = p->ep;
+ }
+ return 0;
+}
+
+struct disk_desc {
+ struct part_desc partitions[512];
+ int partno;
+} oldp, newp;
+
+/* determine where on the disk this information goes */
+static void
+add_sector_and_offset(struct disk_desc *z) {
+ int pno;
+ struct part_desc *p;
+
+ for (pno = 0; pno < z->partno; pno++) {
+ p = &(z->partitions[pno]);
+ p->offset = 0x1be + (pno%4)*sizeof(struct partition);
+ p->sector = (p->ep ? p->ep->start : 0);
+ }
+}
+
+/* tell the kernel to reread the partition tables */
+static int
+reread_ioctl(int fd) {
+ if (ioctl(fd, BLKRRPART)) {
+ perror("BLKRRPART");
+
+ /* 2.6.8 returns EIO for a zero table */
+ if (errno == EBUSY)
+ return -1;
+ }
+ return 0;
+}
+
+static int
+is_blockdev(int fd) {
+ struct stat statbuf;
+
+ return(fstat(fd, &statbuf) == 0 && S_ISBLK(statbuf.st_mode));
+}
+
+/* reread after writing */
+static void
+reread_disk_partition(char *dev, int fd) {
+ printf(_("Re-reading the partition table ...\n"));
+ fflush(stdout);
+ sync();
+ sleep(3); /* superfluous since 1.3.20 */
+
+ if (reread_ioctl(fd) && is_blockdev(fd))
+ do_warn(_("The command to re-read the partition table failed\n"
+ "Reboot your system now, before using mkfs\n"));
+
+ if (close(fd)) {
+ perror(dev);
+ do_warn(_("Error closing %s\n"), dev);
+ }
+ printf("\n");
+}
+
+/* find Linux name of this partition, assuming that it will have a name */
+static int
+index_to_linux(int pno, struct disk_desc *z) {
+ int i, ct = 1;
+ struct part_desc *p = &(z->partitions[0]);
+ for (i=0; i<pno; i++,p++)
+ if (i < 4 || (p->size > 0 && !is_extended(p->p.sys_type)))
+ ct++;
+ return ct;
+}
+
+static int
+linux_to_index(int lpno, struct disk_desc *z) {
+ int i, ct = 0;
+ struct part_desc *p = &(z->partitions[0]);
+ for (i=0; i<z->partno && ct < lpno; i++,p++)
+ if ((i < 4 || (p->size > 0 && !is_extended(p->p.sys_type)))
+ && ++ct == lpno)
+ return i;
+ return -1;
+}
+
+static int
+asc_to_index(char *pnam, struct disk_desc *z) {
+ int pnum, pno;
+
+ if (*pnam == '#') {
+ pno = atoi(pnam+1);
+ } else {
+ pnum = atoi(pnam);
+ pno = linux_to_index(pnum, z);
+ }
+ if (!(pno >= 0 && pno < z->partno))
+ fatal(_("%s: no such partition\n"), pnam);
+ return pno;
+}
+
+/*
+ * List partitions - in terms of sectors, blocks or cylinders
+ */
+#define F_SECTOR 1
+#define F_BLOCK 2
+#define F_CYLINDER 3
+#define F_MEGABYTE 4
+
+int default_format = F_MEGABYTE;
+int specified_format = 0;
+int show_extended = 0;
+int one_only = 0;
+int one_only_pno;
+int increment = 0;
+
+static void
+set_format(char c) {
+ switch(c) {
+ default:
+ do_warn(_("unrecognized format - using sectors\n"));
+ case 'S': specified_format = F_SECTOR; break;
+ case 'B': specified_format = F_BLOCK; break;
+ case 'C': specified_format = F_CYLINDER; break;
+ case 'M': specified_format = F_MEGABYTE; break;
+ }
+}
+
+static unsigned long
+unitsize(int format) {
+ default_format = (B.cylindersize ? F_CYLINDER : F_MEGABYTE);
+ if (!format && !(format = specified_format))
+ format = default_format;
+
+ switch(format) {
+ default:
+ case F_CYLINDER:
+ if (B.cylindersize)
+ return B.cylindersize;
+ case F_SECTOR:
+ return 1;
+ case F_BLOCK:
+ return 2;
+ case F_MEGABYTE:
+ return 2048;
+ }
+}
+
+static unsigned long
+get_disksize(int format) {
+ unsigned long cs = B.cylinders;
+ if (cs && leave_last)
+ cs--;
+ return (cs * B.cylindersize) / unitsize(format);
+}
+
+static void
+out_partition_header(char *dev, int format, struct geometry G) {
+ if (dump) {
+ printf(_("# partition table of %s\n"), dev);
+ printf("unit: sectors\n\n");
+ return;
+ }
+
+ default_format = (G.cylindersize ? F_CYLINDER : F_MEGABYTE);
+ if (!format && !(format = specified_format))
+ format = default_format;
+
+ switch(format) {
+ default:
+ do_warn(_("unimplemented format - using %s\n"),
+ G.cylindersize ? _("cylinders") : _("sectors"));
+ case F_CYLINDER:
+ if (G.cylindersize) {
+ printf(_("Units = cylinders of %lu bytes, blocks of 1024 bytes"
+ ", counting from %d\n\n"),
+ G.cylindersize<<9, increment);
+ printf(_(" Device Boot Start End #cyls #blocks Id System\n"));
+ break;
+ }
+ /* fall through */
+ case F_SECTOR:
+ printf(_("Units = sectors of 512 bytes, counting from %d\n\n"),
+ increment);
+ printf(_(" Device Boot Start End #sectors Id System\n"));
+ break;
+ case F_BLOCK:
+ printf(_("Units = blocks of 1024 bytes, counting from %d\n\n"),
+ increment);
+ printf(_(" Device Boot Start End #blocks Id System\n"));
+ break;
+ case F_MEGABYTE:
+ printf(_("Units = mebibytes of 1048576 bytes, blocks of 1024 bytes"
+ ", counting from %d\n\n"), increment);
+ printf(_(" Device Boot Start End MiB #blocks Id System\n"));
+ break;
+ }
+}
+
+static void
+out_rounddown(int width, unsigned long n, unsigned long unit, int inc) {
+ printf("%*lu", width, inc + n/unit);
+ if (unit != 1)
+ putchar((n % unit) ? '+' : ' ');
+ putchar(' ');
+}
+
+static void
+out_roundup(int width, unsigned long n, unsigned long unit, int inc) {
+ if (n == (unsigned long)(-1))
+ printf("%*s", width, "-");
+ else
+ printf("%*lu", width, inc + n/unit);
+ if (unit != 1)
+ putchar(((n+1) % unit) ? '-' : ' ');
+ putchar(' ');
+}
+
+static void
+out_roundup_size(int width, unsigned long n, unsigned long unit) {
+ printf("%*lu", width, (n+unit-1)/unit);
+ if (unit != 1)
+ putchar((n % unit) ? '-' : ' ');
+ putchar(' ');
+}
+
+static struct geometry
+get_fdisk_geometry_one(struct part_desc *p) {
+ struct geometry G;
+
+ chs b = p->p.end_chs;
+ longchs bb = chs_to_longchs(b);
+ G.heads = bb.h+1;
+ G.sectors = bb.s;
+ G.cylindersize = G.heads*G.sectors;
+ G.cylinders = G.start = 0;
+ return G;
+}
+
+static int
+get_fdisk_geometry(struct disk_desc *z) {
+ struct part_desc *p;
+ int pno, agree;
+ struct geometry G0, G;
+
+ agree = 0;
+ G0.heads = G0.sectors = 0;
+ for (pno=0; pno < z->partno; pno++) {
+ p = &(z->partitions[pno]);
+ if (p->size != 0 && p->p.sys_type != 0) {
+ G = get_fdisk_geometry_one(p);
+ if (!G0.heads) {
+ G0 = G;
+ agree = 1;
+ } else if (G.heads != G0.heads || G.sectors != G0.sectors) {
+ agree = 0;
+ break;
+ }
+ }
+ }
+ F = (agree ? G0 : B);
+ return (F.sectors != B.sectors || F.heads != B.heads);
+}
+
+static void
+out_partition(char *dev, int format, struct part_desc *p,
+ struct disk_desc *z, struct geometry G) {
+ unsigned long start, end, size;
+ int pno, lpno;
+
+ if (!format && !(format = specified_format))
+ format = default_format;
+
+ pno = p - &(z->partitions[0]); /* our index */
+ lpno = index_to_linux(pno, z); /* name of next one that has a name */
+ if (pno == linux_to_index(lpno, z)) /* was that us? */
+ printf("%s", partname(dev, lpno, 10)); /* yes */
+ else if (show_extended)
+ printf(" - ");
+ else
+ return;
+ putchar(dump ? ':' : ' ');
+
+ start = p->start;
+ end = p->start + p->size - 1;
+ size = p->size;
+
+ if (dump) {
+ printf(" start=%9lu", start);
+ printf(", size=%9lu", size);
+ if (p->ptype == DOS_TYPE) {
+ printf(", Id=%2x", p->p.sys_type);
+ if (p->p.bootable == 0x80)
+ printf(", bootable");
+ }
+ printf("\n");
+ return;
+ }
+
+ if (p->ptype != DOS_TYPE || p->p.bootable == 0)
+ printf(" ");
+ else if (p->p.bootable == 0x80)
+ printf(" * ");
+ else
+ printf(" ? "); /* garbage */
+
+ switch(format) {
+ case F_CYLINDER:
+ if (G.cylindersize) {
+ out_rounddown(6, start, G.cylindersize, increment);
+ out_roundup(6, end, G.cylindersize, increment);
+ out_roundup_size(6, size, G.cylindersize);
+ out_rounddown(9, size, 2, 0);
+ break;
+ }
+ /* fall through */
+ default:
+ case F_SECTOR:
+ out_rounddown(9, start, 1, increment);
+ out_roundup(9, end, 1, increment);
+ out_rounddown(10, size, 1, 0);
+ break;
+ case F_BLOCK:
+#if 0
+ printf("%8lu,%3lu ",
+ p->sector/2, ((p->sector & 1) ? 512 : 0) + p->offset);
+#endif
+ out_rounddown(8, start, 2, increment);
+ out_roundup(8, end, 2, increment);
+ out_rounddown(9, size, 2, 0);
+ break;
+ case F_MEGABYTE:
+ out_rounddown(5, start, 2048, increment);
+ out_roundup(5, end, 2048, increment);
+ out_roundup_size(5, size, 2048);
+ out_rounddown(9, size, 2, 0);
+ break;
+ }
+ if (p->ptype == DOS_TYPE) {
+ printf(" %2x %s\n",
+ p->p.sys_type, sysname(p->p.sys_type));
+ } else {
+ printf("\n");
+ }
+
+ /* Is chs as we expect? */
+ if (!quiet && p->ptype == DOS_TYPE) {
+ chs a, b;
+ longchs aa, bb;
+ a = (size ? ulong_to_chs(start,G) : zero_chs);
+ b = p->p.begin_chs;
+ aa = chs_to_longchs(a);
+ bb = chs_to_longchs(b);
+ if (a.s && !is_equal_chs(a, b))
+ do_warn(_("\t\tstart: (c,h,s) expected (%ld,%ld,%ld) found (%ld,%ld,%ld)\n"),
+ aa.c, aa.h, aa.s, bb.c, bb.h, bb.s);
+ a = (size ? ulong_to_chs(end,G) : zero_chs);
+ b = p->p.end_chs;
+ aa = chs_to_longchs(a);
+ bb = chs_to_longchs(b);
+ if (a.s && !is_equal_chs(a, b))
+ do_warn(_("\t\tend: (c,h,s) expected (%ld,%ld,%ld) found (%ld,%ld,%ld)\n"),
+ aa.c, aa.h, aa.s, bb.c, bb.h, bb.s);
+ if (G.cylinders && G.cylinders < 1024 && bb.c > G.cylinders)
+ do_warn(_("partition ends on cylinder %ld, beyond the end of the disk\n"),
+ bb.c);
+ }
+}
+
+static void
+out_partitions(char *dev, struct disk_desc *z) {
+ int pno, format = 0;
+
+ if (z->partno == 0)
+ do_warn(_("No partitions found\n"));
+ else {
+ if (get_fdisk_geometry(z) && !dump) {
+ do_warn(
+ _("Warning: The partition table looks like it was made\n"
+ " for C/H/S=*/%ld/%ld (instead of %ld/%ld/%ld).\n"
+ "For this listing I'll assume that geometry.\n"),
+ F.heads, F.sectors, B.cylinders, B.heads, B.sectors);
+ }
+
+ out_partition_header(dev, format, F);
+ for(pno=0; pno < z->partno; pno++) {
+ out_partition(dev, format, &(z->partitions[pno]), z, F);
+ if (show_extended && pno%4==3)
+ printf("\n");
+ }
+ }
+}
+
+static int
+disj(struct part_desc *p, struct part_desc *q) {
+ return
+ ((p->start + p->size <= q->start)
+ || (is_extended(p->p.sys_type)
+ && q->start + q->size <= p->start + p->size));
+}
+
+static char *
+pnumber(struct part_desc *p, struct disk_desc *z) {
+ static char buf[20];
+ int this, next;
+ struct part_desc *p0 = &(z->partitions[0]);
+
+ this = index_to_linux(p-p0, z);
+ next = index_to_linux(p-p0+1, z);
+
+ if (next > this)
+ sprintf(buf, "%d", this);
+ else
+ sprintf(buf, "[%d]", this);
+ return buf;
+}
+
+static int
+partitions_ok(struct disk_desc *z) {
+ struct part_desc *partitions = &(z->partitions[0]), *p, *q;
+ int partno = z->partno;
+
+#define PNO(p) pnumber(p, z)
+
+ /* Have at least 4 partitions been defined? */
+ if (partno < 4) {
+ if (!partno)
+ fatal(_("no partition table present.\n"));
+ else
+ fatal(_("strange, only %d partitions defined.\n"), partno);
+ return 0;
+ }
+
+ /* Are the partitions of size 0 marked empty?
+ And do they have start = 0? And bootable = 0? */
+ for (p = partitions; p - partitions < partno; p++)
+ if (p->size == 0) {
+ if (p->p.sys_type != EMPTY_PARTITION)
+ warn(_("Warning: partition %s has size 0 but is not marked Empty\n"),
+ PNO(p));
+ else if (p->p.bootable != 0)
+ warn(_("Warning: partition %s has size 0 and is bootable\n"),
+ PNO(p));
+ else if (p->p.start_sect != 0)
+ warn(_("Warning: partition %s has size 0 and nonzero start\n"),
+ PNO(p));
+ /* all this is probably harmless, no error return */
+ }
+
+ /* Are the logical partitions contained in their extended partitions? */
+ for (p = partitions+4; p < partitions+partno; p++)
+ if (p->ptype == DOS_TYPE)
+ if (p->size && !is_extended(p->p.sys_type)) {
+ q = p->ep;
+ if (p->start < q->start || p->start + p->size > q->start + q->size) {
+ warn(_("Warning: partition %s "), PNO(p));
+ warn(_("is not contained in partition %s\n"), PNO(q));
+ return 0;
+ }
+ }
+
+ /* Are the data partitions mutually disjoint? */
+ for (p = partitions; p < partitions+partno; p++)
+ if (p->size && !is_extended(p->p.sys_type))
+ for (q = p+1; q < partitions+partno; q++)
+ if (q->size && !is_extended(q->p.sys_type))
+ if (!((p->start > q-> start) ? disj(q,p) : disj(p,q))) {
+ warn(_("Warning: partitions %s "), PNO(p));
+ warn(_("and %s overlap\n"), PNO(q));
+ return 0;
+ }
+
+ /* Are the data partitions and the extended partition
+ table sectors disjoint? */
+ for (p = partitions; p < partitions+partno; p++)
+ if (p->size && !is_extended(p->p.sys_type))
+ for (q = partitions; q < partitions+partno; q++)
+ if (is_extended(q->p.sys_type))
+ if (p->start <= q->start && p->start + p->size > q->start) {
+ warn(_("Warning: partition %s contains part of "
+ "the partition table (sector %lu),\n"
+ "and will destroy it when filled\n"),
+ PNO(p), q->start);
+ return 0;
+ }
+
+ /* Do they start past zero and end before end-of-disk? */
+ { unsigned long ds = get_disksize(F_SECTOR);
+ for (p = partitions; p < partitions+partno; p++)
+ if (p->size) {
+ if (p->start == 0) {
+ warn(_("Warning: partition %s starts at sector 0\n"), PNO(p));
+ return 0;
+ }
+ if (p->size && p->start + p->size > ds) {
+ warn(_("Warning: partition %s extends past end of disk\n"),
+ PNO(p));
+ return 0;
+ }
+ }
+ }
+
+ /* At most one chain of DOS extended partitions ? */
+ /* It seems that the OS/2 fdisk has the additional requirement
+ that the extended partition must be the fourth one */
+ { int ect = 0;
+ for (p = partitions; p < partitions+4; p++)
+ if (p->p.sys_type == EXTENDED_PARTITION)
+ ect++;
+ if (ect > 1 && !Linux) {
+ warn(_("Among the primary partitions, at most one can be extended\n"
+ " (although this is not a problem under Linux)\n"));
+ return 0;
+ }
+ }
+
+ /*
+ * Do all partitions start at a cylinder boundary ?
+ * (this is not required for Linux)
+ * The first partition starts after MBR.
+ * Logical partitions start slightly after the containing extended partn.
+ */
+ if (B.cylindersize) {
+ for(p = partitions; p < partitions+partno; p++)
+ if (p->size) {
+ if (p->start % B.cylindersize != 0
+ && (!p->ep || p->start / B.cylindersize != p->ep->start / B.cylindersize)
+ && (p->p.start_sect >= B.cylindersize)) {
+ warn(_("Warning: partition %s does not start "
+ "at a cylinder boundary\n"), PNO(p));
+ if (!Linux)
+ return 0;
+ }
+ if ((p->start + p->size) % B.cylindersize) {
+ warn(_("Warning: partition %s does not end "
+ "at a cylinder boundary\n"), PNO(p));
+ if (!Linux)
+ return 0;
+ }
+ }
+ }
+
+ /* Usually, one can boot only from primary partitions. */
+ /* In fact, from a unique one only. */
+ /* do not warn about bootable extended partitions -
+ often LILO is there */
+ { int pno = -1;
+ for(p = partitions; p < partitions+partno; p++)
+ if (p->p.bootable) {
+ if (pno == -1)
+ pno = p - partitions;
+ else if (p - partitions < 4) {
+ warn(_("Warning: more than one primary partition is marked "
+ "bootable (active)\n"
+ "This does not matter for LILO, but the DOS MBR will "
+ "not boot this disk.\n"));
+ break;
+ }
+ if (p - partitions >= 4) {
+ warn(_("Warning: usually one can boot from primary partitions "
+ "only\nLILO disregards the `bootable' flag.\n"));
+ break;
+ }
+ }
+ if (pno == -1 || pno >= 4)
+ warn(_("Warning: no primary partition is marked bootable (active)\n"
+ "This does not matter for LILO, but the DOS MBR will "
+ "not boot this disk.\n"));
+ }
+
+ /* Is chs as we expect? */
+ for(p = partitions; p < partitions+partno; p++)
+ if (p->ptype == DOS_TYPE) {
+ chs a, b;
+ longchs aa, bb;
+ a = p->size ? ulong_to_chs(p->start,B) : zero_chs;
+ b = p->p.begin_chs;
+ aa = chs_to_longchs(a);
+ bb = chs_to_longchs(b);
+ if (!chs_ok(b, PNO(p), _("start")))
+ return 0;
+ if (a.s && !is_equal_chs(a, b))
+ warn(_("partition %s: start: (c,h,s) expected (%ld,%ld,%ld) found (%ld,%ld,%ld)\n"),
+ PNO(p), aa.c, aa.h, aa.s, bb.c, bb.h, bb.s);
+ a = p->size ? ulong_to_chs(p->start + p->size - 1, B) : zero_chs;
+ b = p->p.end_chs;
+ aa = chs_to_longchs(a);
+ bb = chs_to_longchs(b);
+ if (!chs_ok(b, PNO(p), _("end")))
+ return 0;
+ if (a.s && !is_equal_chs(a, b))
+ warn(_("partition %s: end: (c,h,s) expected (%ld,%ld,%ld) found (%ld,%ld,%ld)\n"),
+ PNO(p), aa.c, aa.h, aa.s, bb.c, bb.h, bb.s);
+ if (B.cylinders && B.cylinders < 1024 && bb.c > B.cylinders)
+ warn(_("partition %s ends on cylinder %ld, beyond the end of the disk\n"),
+ PNO(p), bb.c);
+ }
+
+ return 1;
+
+#undef PNO
+}
+
+static void
+extended_partition(char *dev, int fd, struct part_desc *ep, struct disk_desc *z) {
+ char *cp;
+ struct sector *s;
+ unsigned long start, here, next;
+ int i, moretodo = 1;
+ struct partition p;
+ struct part_desc *partitions = &(z->partitions[0]);
+ int pno = z->partno;
+
+ here = start = ep->start;
+
+ if (B.cylindersize && start % B.cylindersize) {
+ /* This is BAD */
+ if (DOS_extended) {
+ here = start -= (start % B.cylindersize);
+ do_warn(_("Warning: shifted start of the extd partition "
+ "from %ld to %ld\n"
+ "(For listing purposes only. "
+ "Do not change its contents.)\n"),
+ ep->start, start);
+ } else {
+ do_warn(_("Warning: extended partition does not start at a "
+ "cylinder boundary.\n"
+ "DOS and Linux will interpret the contents differently.\n"));
+ }
+ }
+
+ while (moretodo) {
+ moretodo = 0;
+
+ if (!(s = get_sector(dev, fd, here)))
+ break;
+
+ if (!msdos_signature(s))
+ break;
+
+ cp = s->data + 0x1be;
+
+ if (pno+4 >= SIZE(z->partitions)) {
+ do_warn(_("too many partitions - ignoring those past nr (%d)\n"),
+ pno-1);
+ break;
+ }
+
+ next = 0;
+
+ for (i=0; i<4; i++,cp += sizeof(struct partition)) {
+ partitions[pno].sector = here;
+ partitions[pno].offset = cp - s->data;
+ partitions[pno].ep = ep;
+ copy_to_part(cp,&p);
+ if (is_extended(p.sys_type)) {
+ partitions[pno].start = start + p.start_sect;
+ if (next)
+ do_warn(_("tree of partitions?\n"));
+ else
+ next = partitions[pno].start; /* follow `upper' branch */
+ moretodo = 1;
+ } else {
+ partitions[pno].start = here + p.start_sect;
+ }
+ partitions[pno].size = p.nr_sects;
+ partitions[pno].ptype = DOS_TYPE;
+ partitions[pno].p = p;
+ pno++;
+ }
+ here = next;
+ }
+
+ z->partno = pno;
+}
+
+#define BSD_DISKMAGIC (0x82564557UL)
+#define BSD_MAXPARTITIONS 16
+#define BSD_FS_UNUSED 0
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+struct bsd_disklabel {
+ u32 d_magic;
+ char d_junk1[4];
+ char d_typename[16];
+ char d_packname[16];
+ char d_junk2[92];
+ u32 d_magic2;
+ char d_junk3[2];
+ u16 d_npartitions; /* number of partitions in following */
+ char d_junk4[8];
+ struct bsd_partition { /* the partition table */
+ u32 p_size; /* number of sectors in partition */
+ u32 p_offset; /* starting sector */
+ u32 p_fsize; /* filesystem basic fragment size */
+ u8 p_fstype; /* filesystem type, see below */
+ u8 p_frag; /* filesystem fragments per block */
+ u16 p_cpg; /* filesystem cylinders per group */
+ } d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */
+};
+
+static void
+bsd_partition(char *dev, int fd, struct part_desc *ep, struct disk_desc *z) {
+ struct bsd_disklabel *l;
+ struct bsd_partition *bp, *bp0;
+ unsigned long start = ep->start;
+ struct sector *s;
+ struct part_desc *partitions = &(z->partitions[0]);
+ int pno = z->partno;
+
+ if (!(s = get_sector(dev,fd,start+1)))
+ return;
+ l = (struct bsd_disklabel *) (s->data);
+ if (l->d_magic != BSD_DISKMAGIC || l->d_magic2 != BSD_DISKMAGIC)
+ return;
+
+ bp = bp0 = &l->d_partitions[0];
+ while (bp - bp0 < BSD_MAXPARTITIONS && bp - bp0 < l->d_npartitions) {
+ if (pno+1 >= SIZE(z->partitions)) {
+ do_warn(_("too many partitions - ignoring those "
+ "past nr (%d)\n"), pno-1);
+ break;
+ }
+ if (bp->p_fstype != BSD_FS_UNUSED) {
+ partitions[pno].start = bp->p_offset;
+ partitions[pno].size = bp->p_size;
+ partitions[pno].sector = start+1;
+ partitions[pno].offset = (char *)bp - (char *)bp0;
+ partitions[pno].ep = 0;
+ partitions[pno].ptype = BSD_TYPE;
+ pno++;
+ }
+ bp++;
+ }
+ z->partno = pno;
+}
+
+#define MAKE_VERSION(p,q,r) (65536*(p) + 256*(q) + (r))
+
+static int
+linux_version_code(void) {
+ struct utsname my_utsname;
+ int p, q, r;
+
+ if (uname(&my_utsname) == 0) {
+ p = atoi(strtok(my_utsname.release, "."));
+ q = atoi(strtok(NULL, "."));
+ r = atoi(strtok(NULL, "."));
+ return MAKE_VERSION(p,q,r);
+ }
+ return 0;
+}
+
+static int
+msdos_partition(char *dev, int fd, unsigned long start, struct disk_desc *z) {
+ int i;
+ char *cp;
+ struct partition pt;
+ struct sector *s;
+ struct part_desc *partitions = &(z->partitions[0]);
+ int pno = z->partno;
+ int bsd_later = (linux_version_code() >= MAKE_VERSION(2,3,40));
+
+ if (!(s = get_sector(dev, fd, start)))
+ return 0;
+
+ if (!msdos_signature(s))
+ return 0;
+
+ cp = s->data + 0x1be;
+ copy_to_part(cp,&pt);
+
+ /* If I am not mistaken, recent kernels will hide this from us,
+ so we will never actually see traces of a Disk Manager */
+ if (pt.sys_type == DM6_PARTITION
+ || pt.sys_type == EZD_PARTITION
+ || pt.sys_type == DM6_AUX1PARTITION
+ || pt.sys_type == DM6_AUX3PARTITION) {
+ do_warn(_("detected Disk Manager - unable to handle that\n"));
+ return 0;
+ }
+ { unsigned int sig = *(unsigned short *)(s->data + 2);
+ if (sig <= 0x1ae
+ && *(unsigned short *)(s->data + sig) == 0x55aa
+ && (1 & *(unsigned char *)(s->data + sig + 2))) {
+ do_warn(_("DM6 signature found - giving up\n"));
+ return 0;
+ }
+ }
+
+ for (pno=0; pno<4; pno++,cp += sizeof(struct partition)) {
+ partitions[pno].sector = start;
+ partitions[pno].offset = cp - s->data;
+ copy_to_part(cp,&pt);
+ partitions[pno].start = start + pt.start_sect;
+ partitions[pno].size = pt.nr_sects;
+ partitions[pno].ep = 0;
+ partitions[pno].p = pt;
+ }
+
+ z->partno = pno;
+
+ for (i=0; i<4; i++) {
+ if (is_extended(partitions[i].p.sys_type)) {
+ if (!partitions[i].size) {
+ do_warn(_("strange..., an extended partition of size 0?\n"));
+ continue;
+ }
+ extended_partition(dev, fd, &partitions[i], z);
+ }
+ if (!bsd_later && is_bsd(partitions[i].p.sys_type)) {
+ if (!partitions[i].size) {
+ do_warn(_("strange..., a BSD partition of size 0?\n"));
+ continue;
+ }
+ bsd_partition(dev, fd, &partitions[i], z);
+ }
+ }
+
+ if (bsd_later) {
+ for (i=0; i<4; i++) {
+ if (is_bsd(partitions[i].p.sys_type)) {
+ if (!partitions[i].size) {
+ do_warn(_("strange..., a BSD partition of size 0?\n"));
+ continue;
+ }
+ bsd_partition(dev, fd, &partitions[i], z);
+ }
+ }
+ }
+
+ return 1;
+}
+
+static int
+osf_partition(char *dev, int fd, unsigned long start, struct disk_desc *z) {
+ return 0;
+}
+
+static int
+sun_partition(char *dev, int fd, unsigned long start, struct disk_desc *z) {
+ return 0;
+}
+
+static int
+amiga_partition(char *dev, int fd, unsigned long start, struct disk_desc *z) {
+ return 0;
+}
+
+static void
+get_partitions(char *dev, int fd, struct disk_desc *z) {
+ z->partno = 0;
+
+ if (!msdos_partition(dev, fd, 0, z)
+ && !osf_partition(dev, fd, 0, z)
+ && !sun_partition(dev, fd, 0, z)
+ && !amiga_partition(dev, fd, 0, z)) {
+ do_warn(_(" %s: unrecognized partition table type\n"), dev);
+ return;
+ }
+}
+
+static int
+write_partitions(char *dev, int fd, struct disk_desc *z) {
+ struct sector *s;
+ struct part_desc *partitions = &(z->partitions[0]), *p;
+ int pno = z->partno;
+
+ if (no_write) {
+ do_warn(_("-n flag was given: Nothing changed\n"));
+ exit(0);
+ }
+
+ for (p = partitions; p < partitions+pno; p++) {
+ s = get_sector(dev, fd, p->sector);
+ if (!s) return 0;
+ s->to_be_written = 1;
+ if (p->ptype == DOS_TYPE) {
+ copy_from_part(&(p->p), s->data + p->offset);
+ s->data[510] = 0x55;
+ s->data[511] = 0xaa;
+ }
+ }
+ if (save_sector_file) {
+ if (!save_sectors(dev, fd)) {
+ fatal(_("Failed saving the old sectors - aborting\n"));
+ return 0;
+ }
+ }
+ if (!write_sectors(dev, fd)) {
+ error(_("Failed writing the partition on %s\n"), dev);
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * F. The standard input
+ */
+
+/*
+ * Input format:
+ * <start> <size> <type> <bootable> <c,h,s> <c,h,s>
+ * Fields are separated by whitespace or comma or semicolon possibly
+ * followed by whitespace; initial and trailing whitespace is ignored.
+ * Numbers can be octal, decimal or hexadecimal, decimal is default
+ * The <c,h,s> parts can (and probably should) be omitted.
+ * Bootable is specified as [*|-], with as default not-bootable.
+ * Type is given in hex, without the 0x prefix, or is [E|S|L|X], where
+ * L (LINUX_NATIVE (83)) is the default, S is LINUX_SWAP (82), and E
+ * is EXTENDED_PARTITION (5), X is LINUX_EXTENDED (85).
+ * The default value of start is the first nonassigned sector/cylinder/...
+ * The default value of size is as much as possible (until next
+ * partition or end-of-disk).
+ * .: end of chain of extended partitions.
+ *
+ * On interactive input an empty line means: all defaults.
+ * Otherwise empty lines are ignored.
+ */
+
+int eof, eob;
+
+struct dumpfld {
+ int fldno;
+ char *fldname;
+ int is_bool;
+} dumpflds[] = {
+ { 0, "start", 0 },
+ { 1, "size", 0 },
+ { 2, "Id", 0 },
+ { 3, "bootable", 1 },
+ { 4, "bh", 0 },
+ { 5, "bs", 0 },
+ { 6, "bc", 0 },
+ { 7, "eh", 0 },
+ { 8, "es", 0 },
+ { 9, "ec", 0 }
+};
+
+/*
+ * Read a line, split it into fields
+ *
+ * (some primitive handwork, but a more elaborate parser seems
+ * unnecessary)
+ */
+#define RD_EOF (-1)
+#define RD_CMD (-2)
+
+static int
+read_stdin(unsigned char **fields, unsigned char *line, int fieldssize, int linesize) {
+ unsigned char *lp, *ip;
+ int c, fno;
+
+ /* boolean true and empty string at start */
+ line[0] = '*';
+ line[1] = 0;
+ for (fno=0; fno < fieldssize; fno++)
+ fields[fno] = line + 1;
+ fno = 0;
+
+ /* read a line from stdin */
+ lp = fgets(line+2, linesize, stdin);
+ if (lp == NULL) {
+ eof = 1;
+ return RD_EOF;
+ }
+ if (!(lp = index(lp, '\n')))
+ fatal(_("long or incomplete input line - quitting\n"));
+ *lp = 0;
+
+ /* remove comments, if any */
+ if ((lp = index(line+2, '#')) != 0)
+ *lp = 0;
+
+ /* recognize a few commands - to be expanded */
+ if (!strcmp(line+2, "unit: sectors")) {
+ specified_format = F_SECTOR;
+ return RD_CMD;
+ }
+
+ /* dump style? - then bad input is fatal */
+ if ((ip = index(line+2, ':')) != 0) {
+ struct dumpfld *d;
+
+ nxtfld:
+ ip++;
+ while(isspace(*ip))
+ ip++;
+ if (*ip == 0)
+ return fno;
+ for(d = dumpflds; d-dumpflds < SIZE(dumpflds); d++) {
+ if (!strncmp(ip, d->fldname, strlen(d->fldname))) {
+ ip += strlen(d->fldname);
+ while(isspace(*ip))
+ ip++;
+ if (d->is_bool)
+ fields[d->fldno] = line;
+ else if (*ip == '=') {
+ while(isspace(*++ip)) ;
+ fields[d->fldno] = ip;
+ while(isalnum(*ip)) /* 0x07FF */
+ ip++;
+ } else
+ fatal(_("input error: `=' expected after %s field\n"),
+ d->fldname);
+ if (fno <= d->fldno)
+ fno = d->fldno + 1;
+ if (*ip == 0)
+ return fno;
+ if (*ip != ',' && *ip != ';')
+ fatal(_("input error: unexpected character %c after %s field\n"),
+ *ip, d->fldname);
+ *ip = 0;
+ goto nxtfld;
+ }
+ }
+ fatal(_("unrecognized input: %s\n"), ip);
+ }
+
+ /* split line into fields */
+ lp = ip = line+2;
+ fields[fno++] = lp;
+ while((c = *ip++) != 0) {
+ if (!lp[-1] && (c == '\t' || c == ' '))
+ ;
+ else if (c == '\t' || c == ' ' || c == ',' || c == ';') {
+ *lp++ = 0;
+ if (fno < fieldssize)
+ fields[fno++] = lp;
+ continue;
+ } else
+ *lp++ = c;
+ }
+
+ if (lp == fields[fno-1])
+ fno--;
+ return fno;
+}
+
+/* read a number, use default if absent */
+/* a sign gives an offset from the default */
+static int
+get_ul(char *u, unsigned long *up, unsigned long def, int base) {
+ char *nu;
+ int sign = 0;
+ unsigned long val;
+
+ if (*u == '+') {
+ sign = 1;
+ u++;
+ } else if (*u == '-') {
+ sign = -1;
+ u++;
+ }
+ if (*u) {
+ errno = 0;
+ val = strtoul(u, &nu, base);
+ if (errno == ERANGE) {
+ do_warn(_("number too big\n"));
+ return -1;
+ }
+ if (*nu) {
+ do_warn(_("trailing junk after number\n"));
+ return -1;
+ }
+ if (sign == 1)
+ val = def + val;
+ else if (sign == -1)
+ val = def - val;
+ *up = val;
+ } else
+ *up = def;
+ return 0;
+}
+
+/* There are two common ways to structure extended partitions:
+ as nested boxes, and as a chain. Sometimes the partitions
+ must be given in order. Sometimes all logical partitions
+ must lie inside the outermost extended partition.
+NESTED: every partition is contained in the surrounding partitions
+ and is disjoint from all others.
+CHAINED: every data partition is contained in the surrounding partitions
+ and disjoint from all others, but extended partitions may lie outside
+ (insofar as allowed by all_logicals_inside_outermost_extended).
+ONESECTOR: all data partitions are mutually disjoint; extended partitions
+ each use one sector only (except perhaps for the outermost one).
+*/
+int partitions_in_order = 0;
+int all_logicals_inside_outermost_extended = 1;
+enum { NESTED, CHAINED, ONESECTOR } boxes = NESTED;
+
+/* find the default value for <start> - assuming entire units */
+static unsigned long
+first_free(int pno, int is_extended, struct part_desc *ep, int format,
+ unsigned long mid, struct disk_desc *z) {
+ unsigned long ff, fff;
+ unsigned long unit = unitsize(format);
+ struct part_desc *partitions = &(z->partitions[0]), *pp = 0;
+
+ /* if containing ep undefined, look at its container */
+ if (ep && ep->p.sys_type == EMPTY_PARTITION)
+ ep = ep->ep;
+
+ if (ep) {
+ if (boxes == NESTED || (boxes == CHAINED && !is_extended))
+ pp = ep;
+ else if (all_logicals_inside_outermost_extended)
+ pp = outer_extended_partition(ep);
+ }
+#if 0
+ ff = pp ? (pp->start + unit - 1) / unit : 0;
+#else
+ /* rounding up wastes almost an entire cylinder - round down
+ and leave it to compute_start_sect() to fix the difference */
+ ff = pp ? pp->start / unit : 0;
+#endif
+ /* MBR and 1st sector of an extended partition are never free */
+ if (unit == 1)
+ ff++;
+
+ again:
+ for(pp = partitions; pp < partitions+pno; pp++) {
+ if (!is_parent(pp, ep) && pp->size > 0) {
+ if ((partitions_in_order || pp->start / unit <= ff
+ || (mid && pp->start / unit <= mid))
+ && (fff = (pp->start + pp->size + unit - 1) / unit) > ff) {
+ ff = fff;
+ goto again;
+ }
+ }
+ }
+
+ return ff;
+}
+
+/* find the default value for <size> - assuming entire units */
+static unsigned long
+max_length(int pno, int is_extended, struct part_desc *ep, int format,
+ unsigned long start, struct disk_desc *z) {
+ unsigned long fu;
+ unsigned long unit = unitsize(format);
+ struct part_desc *partitions = &(z->partitions[0]), *pp = 0;
+
+ /* if containing ep undefined, look at its container */
+ if (ep && ep->p.sys_type == EMPTY_PARTITION)
+ ep = ep->ep;
+
+ if (ep) {
+ if (boxes == NESTED || (boxes == CHAINED && !is_extended))
+ pp = ep;
+ else if (all_logicals_inside_outermost_extended)
+ pp = outer_extended_partition(ep);
+ }
+ fu = pp ? (pp->start + pp->size) / unit : get_disksize(format);
+
+ for(pp = partitions; pp < partitions+pno; pp++)
+ if (!is_parent(pp, ep) && pp->size > 0
+ && pp->start / unit >= start && pp->start / unit < fu)
+ fu = pp->start / unit;
+
+ return (fu > start) ? fu - start : 0;
+}
+
+/* compute starting sector of a partition inside an extended one */
+/* return 0 on failure */
+/* ep is 0 or points to surrounding extended partition */
+static int
+compute_start_sect(struct part_desc *p, struct part_desc *ep) {
+ unsigned long base;
+ int inc = (DOS && B.sectors) ? B.sectors : 1;
+ int delta;
+
+ if (ep && p->start + p->size >= ep->start + 1)
+ delta = p->start - ep->start - inc;
+ else if (p->start == 0 && p->size > 0)
+ delta = -inc;
+ else
+ delta = 0;
+
+ if (delta < 0) {
+ p->start -= delta;
+ p->size += delta;
+ if (is_extended(p->p.sys_type) && boxes == ONESECTOR)
+ p->size = inc;
+ else if ((int)(p->size) <= 0) {
+ warn(_("no room for partition descriptor\n"));
+ return 0;
+ }
+ }
+ base = (!ep ? 0
+ : (is_extended(p->p.sys_type) ?
+ outer_extended_partition(ep) : ep)->start);
+ p->ep = ep;
+ if (p->p.sys_type == EMPTY_PARTITION && p->size == 0) {
+ p->p.start_sect = 0;
+ p->p.begin_chs = zero_chs;
+ p->p.end_chs = zero_chs;
+ } else {
+ p->p.start_sect = p->start - base;
+ p->p.begin_chs = ulong_to_chs(p->start,B);
+ p->p.end_chs = ulong_to_chs(p->start + p->size - 1,B);
+ }
+ p->p.nr_sects = p->size;
+ return 1;
+}
+
+/* build the extended partition surrounding a given logical partition */
+static int
+build_surrounding_extended(struct part_desc *p, struct part_desc *ep,
+ struct disk_desc *z) {
+ int inc = (DOS && B.sectors) ? B.sectors : 1;
+ int format = F_SECTOR;
+ struct part_desc *p0 = &(z->partitions[0]), *eep = ep->ep;
+
+ if (boxes == NESTED) {
+ ep->start = first_free(ep-p0, 1, eep, format, p->start, z);
+ ep->size = max_length(ep-p0, 1, eep, format, ep->start, z);
+ if (ep->start > p->start || ep->start + ep->size < p->start + p->size) {
+ warn(_("cannot build surrounding extended partition\n"));
+ return 0;
+ }
+ } else {
+ ep->start = p->start;
+ if (boxes == CHAINED)
+ ep->size = p->size;
+ else
+ ep->size = inc;
+ }
+
+ ep->p.nr_sects = ep->size;
+ ep->p.bootable = 0;
+ ep->p.sys_type = EXTENDED_PARTITION;
+ if (!compute_start_sect(ep, eep) || !compute_start_sect(p, ep)) {
+ ep->p.sys_type = EMPTY_PARTITION;
+ ep->size = 0;
+ return 0;
+ }
+
+ return 1;
+}
+
+static int
+read_line(int pno, struct part_desc *ep, char *dev, int interactive,
+ struct disk_desc *z) {
+ unsigned char line[1000];
+ unsigned char *fields[11];
+ int fno, pct = pno%4;
+ struct part_desc p, *orig;
+ unsigned long ff, ff1, ul, ml, ml1, def;
+ int format, lpno, is_extd;
+
+ if (eof || eob)
+ return -1;
+
+ lpno = index_to_linux(pno, z);
+
+ if (interactive) {
+ if (pct == 0 && (show_extended || pno == 0))
+ warn("\n");
+ warn("%s:", partname(dev, lpno, 10));
+ }
+
+ /* read input line - skip blank lines when reading from a file */
+ do {
+ fno = read_stdin(fields, line, SIZE(fields), SIZE(line));
+ } while(fno == RD_CMD || (fno == 0 && !interactive));
+ if (fno == RD_EOF) {
+ return -1;
+ } else if (fno > 10 && *(fields[10]) != 0) {
+ do_warn(_("too many input fields\n"));
+ return 0;
+ }
+
+ if (fno == 1 && !strcmp(fields[0], ".")) {
+ eob = 1;
+ return -1;
+ }
+
+ /* use specified format, but round to cylinders if F_MEGABYTE specified */
+ format = 0;
+ if (B.cylindersize && specified_format == F_MEGABYTE)
+ format = F_CYLINDER;
+
+ orig = (one_only ? &(oldp.partitions[pno]) : 0);
+
+ p = zero_part_desc;
+ p.ep = ep;
+
+ /* first read the type - we need to know whether it is extended */
+ /* stop reading when input blank (defaults) and all is full */
+ is_extd = 0;
+ if (fno == 0) { /* empty line */
+ if (orig && is_extended(orig->p.sys_type))
+ is_extd = 1;
+ ff = first_free(pno, is_extd, ep, format, 0, z);
+ ml = max_length(pno, is_extd, ep, format, ff, z);
+ if (ml == 0 && is_extd == 0) {
+ is_extd = 1;
+ ff = first_free(pno, is_extd, ep, format, 0, z);
+ ml = max_length(pno, is_extd, ep, format, ff, z);
+ }
+ if (ml == 0 && pno >= 4) {
+ /* no free blocks left - don't read any further */
+ warn(_("No room for more\n"));
+ return -1;
+ }
+ }
+ if (fno < 3 || !*(fields[2]))
+ ul = orig ? orig->p.sys_type :
+ (is_extd || (pno > 3 && pct == 1 && show_extended))
+ ? EXTENDED_PARTITION : LINUX_NATIVE;
+ else if (!strcmp(fields[2], "L"))
+ ul = LINUX_NATIVE;
+ else if (!strcmp(fields[2], "S"))
+ ul = LINUX_SWAP;
+ else if (!strcmp(fields[2], "E"))
+ ul = EXTENDED_PARTITION;
+ else if (!strcmp(fields[2], "X"))
+ ul = LINUX_EXTENDED;
+ else if (get_ul(fields[2], &ul, LINUX_NATIVE, 16))
+ return 0;
+ if (ul > 255) {
+ warn(_("Illegal type\n"));
+ return 0;
+ }
+ p.p.sys_type = ul;
+ is_extd = is_extended(ul);
+
+ /* find start */
+ ff = first_free(pno, is_extd, ep, format, 0, z);
+ ff1 = ff * unitsize(format);
+ def = orig ? orig->start : (pno > 4 && pct > 1) ? 0 : ff1;
+ if (fno < 1 || !*(fields[0]))
+ p.start = def;
+ else {
+ if (get_ul(fields[0], &ul, def / unitsize(0), 0))
+ return 0;
+ p.start = ul * unitsize(0);
+ p.start -= (p.start % unitsize(format));
+ }
+
+ /* find length */
+ ml = max_length(pno, is_extd, ep, format, p.start / unitsize(format), z);
+ ml1 = ml * unitsize(format);
+ def = orig ? orig->size : (pno > 4 && pct > 1) ? 0 : ml1;
+ if (fno < 2 || !*(fields[1]))
+ p.size = def;
+ else {
+ if (get_ul(fields[1], &ul, def / unitsize(0), 0))
+ return 0;
+ p.size = ul * unitsize(0) + unitsize(format) - 1;
+ p.size -= (p.size % unitsize(format));
+ }
+ if (p.size > ml1) {
+ warn(_("Warning: given size (%lu) exceeds max allowable size (%lu)\n"),
+ (p.size + unitsize(0) - 1) / unitsize(0), ml1 / unitsize(0));
+ if (!force)
+ return 0;
+ }
+ if (p.size == 0 && pno >= 4 && (fno < 2 || !*(fields[1]))) {
+ warn(_("Warning: empty partition\n"));
+ if (!force)
+ return 0;
+ }
+ p.p.nr_sects = p.size;
+
+ if (p.size == 0 && !orig) {
+ if (fno < 1 || !*(fields[0]))
+ p.start = 0;
+ if (fno < 3 || !*(fields[2]))
+ p.p.sys_type = EMPTY_PARTITION;
+ }
+
+ if (p.start < ff1 && p.size > 0) {
+ warn(_("Warning: bad partition start (earliest %lu)\n"),
+ (ff1 + unitsize(0) - 1) / unitsize(0));
+ if (!force)
+ return 0;
+ }
+
+ if (fno < 4 || !*(fields[3]))
+ ul = (orig ? orig->p.bootable : 0);
+ else if (!strcmp(fields[3], "-"))
+ ul = 0;
+ else if (!strcmp(fields[3], "*") || !strcmp(fields[3], "+"))
+ ul = 0x80;
+ else {
+ warn(_("unrecognized bootable flag - choose - or *\n"));
+ return 0;
+ }
+ p.p.bootable = ul;
+
+ if (ep && ep->p.sys_type == EMPTY_PARTITION) {
+ if (!build_surrounding_extended(&p, ep, z))
+ return 0;
+ } else
+ if (!compute_start_sect(&p, ep))
+ return 0;
+
+ { longchs aa = chs_to_longchs(p.p.begin_chs), bb;
+
+ if (fno < 5) {
+ bb = aa;
+ } else if (fno < 7) {
+ warn(_("partial c,h,s specification?\n"));
+ return 0;
+ } else if (get_ul(fields[4], &bb.c, aa.c, 0) ||
+ get_ul(fields[5], &bb.h, aa.h, 0) ||
+ get_ul(fields[6], &bb.s, aa.s, 0))
+ return 0;
+ p.p.begin_chs = longchs_to_chs(bb,B);
+ }
+ { longchs aa = chs_to_longchs(p.p.end_chs), bb;
+
+ if (fno < 8) {
+ bb = aa;
+ } else if (fno < 10) {
+ warn(_("partial c,h,s specification?\n"));
+ return 0;
+ } else if (get_ul(fields[7], &bb.c, aa.c, 0) ||
+ get_ul(fields[8], &bb.h, aa.h, 0) ||
+ get_ul(fields[9], &bb.s, aa.s, 0))
+ return 0;
+ p.p.end_chs = longchs_to_chs(bb, B);
+ }
+
+ if (pno > 3 && p.size && show_extended && p.p.sys_type != EMPTY_PARTITION
+ && (is_extended(p.p.sys_type) != (pct == 1))) {
+ warn(_("Extended partition not where expected\n"));
+ if (!force)
+ return 0;
+ }
+
+ z->partitions[pno] = p;
+ if (pno >= z->partno)
+ z->partno += 4; /* reqd for out_partition() */
+
+ if (interactive)
+ out_partition(dev, 0, &(z->partitions[pno]), z, B);
+
+ return 1;
+}
+
+/* ep either points to the extended partition to contain this one,
+ or to the empty partition that may become extended or is 0 */
+static int
+read_partition(char *dev, int interactive, int pno, struct part_desc *ep,
+ struct disk_desc *z) {
+ struct part_desc *p = &(z->partitions[pno]);
+ int i;
+
+ if (one_only) {
+ *p = oldp.partitions[pno];
+ if (one_only_pno != pno)
+ goto ret;
+ } else if (!show_extended && pno > 4 && pno%4)
+ goto ret;
+
+ while (!(i = read_line(pno, ep, dev, interactive, z)))
+ if (!interactive)
+ fatal(_("bad input\n"));
+ if (i < 0) {
+ p->ep = ep;
+ return 0;
+ }
+
+ ret:
+ p->ep = ep;
+ if (pno >= z->partno)
+ z->partno += 4;
+ return 1;
+}
+
+static void
+read_partition_chain(char *dev, int interactive, struct part_desc *ep,
+ struct disk_desc *z) {
+ int i, base;
+
+ eob = 0;
+ while (1) {
+ base = z->partno;
+ if (base+4 > SIZE(z->partitions)) {
+ do_warn(_("too many partitions\n"));
+ break;
+ }
+ for (i=0; i<4; i++)
+ if (!read_partition(dev, interactive, base+i, ep, z))
+ return;
+ for (i=0; i<4; i++) {
+ ep = &(z->partitions[base+i]);
+ if (is_extended(ep->p.sys_type) && ep->size)
+ break;
+ }
+ if (i == 4) {
+ /* nothing found - maybe an empty partition is going
+ to be extended */
+ if (one_only || show_extended)
+ break;
+ ep = &(z->partitions[base+1]);
+ if (ep->size || ep->p.sys_type != EMPTY_PARTITION)
+ break;
+ }
+ }
+}
+
+static void
+read_input(char *dev, int interactive, struct disk_desc *z) {
+ int i;
+ struct part_desc *partitions = &(z->partitions[0]), *ep;
+
+ for (i=0; i < SIZE(z->partitions); i++)
+ partitions[i] = zero_part_desc;
+ z->partno = 0;
+
+ if (interactive)
+ warn(_("Input in the following format; absent fields get a default value.\n"
+ "<start> <size> <type [E,S,L,X,hex]> <bootable [-,*]> <c,h,s> <c,h,s>\n"
+ "Usually you only need to specify <start> and <size> (and perhaps <type>).\n"));
+ eof = 0;
+
+ for (i=0; i<4; i++)
+ read_partition(dev, interactive, i, 0, z);
+ for (i=0; i<4; i++) {
+ ep = partitions+i;
+ if (is_extended(ep->p.sys_type) && ep->size)
+ read_partition_chain(dev, interactive, ep, z);
+ }
+ add_sector_and_offset(z);
+}
+
+/*
+ * G. The command line
+ */
+
+static void version(void) {
+ printf("%s %s %s (aeb@cwi.nl, %s) from util-linux-"
+ UTIL_LINUX_VERSION "\n",
+ PROGNAME, _("version"), VERSION, DATE);
+}
+
+static void
+usage(void) {
+ version();
+ printf(_("Usage: %s [options] device ...\n"), PROGNAME);
+ puts (_("device: something like /dev/hda or /dev/sda"));
+ puts (_("useful options:"));
+ puts (_(" -s [or --show-size]: list size of a partition"));
+ puts (_(" -c [or --id]: print or change partition Id"));
+ puts (_(" -l [or --list]: list partitions of each device"));
+ puts (_(" -d [or --dump]: idem, but in a format suitable for later input"));
+ puts (_(" -i [or --increment]: number cylinders etc. from 1 instead of from 0"));
+ puts (_(" -uS, -uB, -uC, -uM: accept/report in units of sectors/blocks/cylinders/MB"));
+ puts (_(" -T [or --list-types]:list the known partition types"));
+ puts (_(" -D [or --DOS]: for DOS-compatibility: waste a little space"));
+ puts (_(" -R [or --re-read]: make kernel reread partition table"));
+ puts (_(" -N# : change only the partition with number #"));
+ puts (_(" -n : do not actually write to disk"));
+ puts (_(" -O file : save the sectors that will be overwritten to file"));
+ puts (_(" -I file : restore these sectors again"));
+ puts (_(" -v [or --version]: print version"));
+ puts (_(" -? [or --help]: print this message"));
+ puts (_("dangerous options:"));
+ puts (_(" -g [or --show-geometry]: print the kernel's idea of the geometry"));
+ puts (_(" -G [or --show-pt-geometry]: print geometry guessed from the partition table"));
+ puts (_(" -x [or --show-extended]: also list extended partitions on output\n"
+ " or expect descriptors for them on input"));
+ puts (_(" -L [or --Linux]: do not complain about things irrelevant for Linux"));
+ puts (_(" -q [or --quiet]: suppress warning messages"));
+ puts (_(" You can override the detected geometry using:"));
+ puts (_(" -C# [or --cylinders #]:set the number of cylinders to use"));
+ puts (_(" -H# [or --heads #]: set the number of heads to use"));
+ puts (_(" -S# [or --sectors #]: set the number of sectors to use"));
+ puts (_("You can disable all consistency checking with:"));
+ puts (_(" -f [or --force]: do what I say, even if it is stupid"));
+ exit(1);
+}
+
+static void
+activate_usage(char *progn) {
+ puts (_("Usage:"));
+ printf(_("%s device list active partitions on device\n"), progn);
+ printf(_("%s device n1 n2 ... activate partitions n1 ..., inactivate the rest\n"), progn);
+ printf(_("%s -An device activate partition n, inactivate the other ones\n"), PROGNAME);
+ exit(1);
+}
+
+static void
+unhide_usage(char *progn) {
+ exit(1);
+}
+
+static char short_opts[] = "cdfgilnqsu:vx?1A::C:DGH:I:LN:O:RS:TU::V";
+
+#define PRINT_ID 0400
+#define CHANGE_ID 01000
+
+static const struct option long_opts[] = {
+ { "change-id", no_argument, NULL, 'c' + CHANGE_ID },
+ { "print-id", no_argument, NULL, 'c' + PRINT_ID },
+ { "id", no_argument, NULL, 'c' },
+ { "dump", no_argument, NULL, 'd' },
+ { "force", no_argument, NULL, 'f' },
+ { "show-geometry", no_argument, NULL, 'g' },
+ { "increment", no_argument, NULL, 'i' },
+ { "list", no_argument, NULL, 'l' },
+ { "quiet", no_argument, NULL, 'q' },
+ { "show-size", no_argument, NULL, 's' },
+ { "unit", required_argument, NULL, 'u' },
+ { "version", no_argument, NULL, 'v' },
+ { "show-extended", no_argument, NULL, 'x' },
+ { "help", no_argument, NULL, '?' },
+ { "one-only", no_argument, NULL, '1' },
+ { "cylinders", required_argument, NULL, 'C' },
+ { "heads", required_argument, NULL, 'H' },
+ { "sectors", required_argument, NULL, 'S' },
+ { "show-pt-geometry", no_argument, NULL, 'G' },
+ { "activate", optional_argument, NULL, 'A' },
+ { "DOS", no_argument, NULL, 'D' },
+ { "DOS-extended", no_argument, NULL, 'E' },
+ { "Linux", no_argument, NULL, 'L' },
+ { "re-read", no_argument, NULL, 'R' },
+ { "list-types", no_argument, NULL, 'T' },
+ { "unhide", optional_argument, NULL, 'U' },
+ { "no-reread", no_argument, NULL, 160 },
+ { "IBM", no_argument, NULL, 161 },
+ { "leave-last", no_argument, NULL, 161 },
+/* undocumented flags - not all completely implemented */
+ { "in-order", no_argument, NULL, 128 },
+ { "not-in-order", no_argument, NULL, 129 },
+ { "inside-outer", no_argument, NULL, 130 },
+ { "not-inside-outer", no_argument, NULL, 131 },
+ { "nested", no_argument, NULL, 132 },
+ { "chained", no_argument, NULL, 133 },
+ { "onesector", no_argument, NULL, 134 },
+ { NULL, 0, NULL, 0 }
+};
+
+static int
+is_ide_cdrom_or_tape(char *device) {
+ FILE *procf;
+ char buf[100];
+ struct stat statbuf;
+ int is_ide = 0;
+
+ /* No device was given explicitly, and we are trying some
+ likely things. But opening /dev/hdc may produce errors like
+ "hdc: tray open or drive not ready"
+ if it happens to be a CD-ROM drive. It even happens that
+ the process hangs on the attempt to read a music CD.
+ So try to be careful. This only works since 2.1.73. */
+
+ if (strncmp("/dev/hd", device, 7))
+ return 0;
+
+ snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5);
+ procf = fopen(buf, "r");
+ if (procf != NULL && fgets(buf, sizeof(buf), procf))
+ is_ide = (!strncmp(buf, "cdrom", 5) ||
+ !strncmp(buf, "tape", 4));
+ else
+ /* Now when this proc file does not exist, skip the
+ device when it is read-only. */
+ if (stat(device, &statbuf) == 0)
+ is_ide = ((statbuf.st_mode & 0222) == 0);
+
+ if (procf)
+ fclose(procf);
+ return is_ide;
+}
+
+static int
+is_probably_full_disk(char *name) {
+ struct hd_geometry geometry;
+ int fd, i = 0;
+
+ fd = open(name, O_RDONLY);
+ if (fd >= 0) {
+ i = ioctl(fd, HDIO_GETGEO, &geometry);
+ close(fd);
+ }
+ return (fd >= 0 && i == 0 && geometry.start == 0);
+}
+
+#define PROC_PARTITIONS "/proc/partitions"
+static FILE *procf = NULL;
+
+static void
+openproc(void) {
+ procf = fopen(PROC_PARTITIONS, "r");
+ if (procf == NULL)
+ fprintf(stderr, _("cannot open %s\n"), PROC_PARTITIONS);
+}
+
+static char *
+nextproc(void) {
+ static char devname[120];
+ char line[100], ptname[100];
+ int ma, mi, sz;
+
+ if (procf == NULL)
+ return NULL;
+ while (fgets(line, sizeof(line), procf) != NULL) {
+ if (sscanf (line, " %d %d %d %[^\n ]",
+ &ma, &mi, &sz, ptname) != 4)
+ continue;
+ snprintf(devname, sizeof(devname), "/dev/%s", ptname);
+ if (!is_probably_full_disk(devname))
+ continue;
+ return devname;
+ }
+
+ fclose(procf);
+ procf = NULL;
+ return NULL;
+}
+
+static void do_list(char *dev, int silent);
+static void do_size(char *dev, int silent);
+static void do_geom(char *dev, int silent);
+static void do_pt_geom(char *dev, int silent);
+static void do_fdisk(char *dev);
+static void do_reread(char *dev);
+static void do_change_id(char *dev, char *part, char *id);
+static void do_unhide(char **av, int ac, char *arg);
+static void do_activate(char **av, int ac, char *arg);
+
+unsigned long long total_size;
+
+int
+main(int argc, char **argv) {
+ char *progn;
+ int c;
+ char *dev;
+ int opt_size = 0;
+ int opt_out_geom = 0;
+ int opt_out_pt_geom = 0;
+ int opt_reread = 0;
+ int activate = 0;
+ int do_id = 0;
+ int unhide = 0;
+ int fdisk = 0;
+ char *activatearg = 0;
+ char *unhidearg = 0;
+
+/*
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+*/
+ if (argc < 1)
+ fatal(_("no command?\n"));
+ if ((progn = rindex(argv[0], '/')) == NULL)
+ progn = argv[0];
+ else
+ progn++;
+ if (!strcmp(progn, "activate"))
+ activate = 1; /* equivalent to `sfdisk -A' */
+#if 0 /* not important enough to deserve a name */
+ else if (!strcmp(progn, "unhide"))
+ unhide = 1; /* equivalent to `sfdisk -U' */
+#endif
+ else
+ fdisk = 1;
+
+ while ((c = getopt_long (argc, argv, short_opts, long_opts, NULL)) != -1) {
+ switch (c) {
+ case 'f':
+ force = 1; break; /* does not imply quiet */
+ case 'g':
+ opt_out_geom = 1; break;
+ case 'G':
+ opt_out_pt_geom = 1; break;
+ case 'i':
+ increment = 1; break;
+ case 'c':
+ case 'c' + PRINT_ID:
+ case 'c' + CHANGE_ID:
+ do_id = c; break;
+ case 'd':
+ dump = 1; /* fall through */
+ case 'l':
+ opt_list = 1; break;
+ case 'n':
+ no_write = 1; break;
+ case 'q':
+ quiet = 1; break;
+ case 's':
+ opt_size = 1; break;
+ case 'u':
+ set_format(*optarg); break;
+ case 'v':
+ version();
+ exit(0);
+ case 'x':
+ show_extended = 1; break;
+ case 'A':
+ activatearg = optarg;
+ activate = 1; break;
+ case 'C':
+ U.cylinders = atoi(optarg); break;
+ case 'D':
+ DOS = 1; break;
+ case 'E':
+ DOS_extended = 1; break;
+ case 'H':
+ U.heads = atoi(optarg); break;
+ case 'L':
+ Linux = 1; break;
+ case 'N':
+ one_only = atoi(optarg); break;
+ case 'I':
+ restore_sector_file = optarg; break;
+ case 'O':
+ save_sector_file = optarg; break;
+ case 'R':
+ opt_reread = 1; break;
+ case 'S':
+ U.sectors = atoi(optarg); break;
+ case 'T':
+ list_types();
+ exit(0);
+ case 'U':
+ unhidearg = optarg;
+ unhide = 1; break;
+ case 'V':
+ verify = 1; break;
+ case '?':
+ default:
+ usage(); break;
+
+ /* undocumented flags */
+ case 128:
+ partitions_in_order = 1; break;
+ case 129:
+ partitions_in_order = 0; break;
+ case 130:
+ all_logicals_inside_outermost_extended = 1; break;
+ case 131:
+ all_logicals_inside_outermost_extended = 0; break;
+ case 132:
+ boxes = NESTED; break;
+ case 133:
+ boxes = CHAINED; break;
+ case 134:
+ boxes = ONESECTOR; break;
+
+ /* more flags */
+ case 160:
+ no_reread = 1; break;
+ case 161:
+ leave_last = 1; break;
+ }
+ }
+
+ if (optind == argc &&
+ (opt_list || opt_out_geom || opt_out_pt_geom || opt_size || verify)) {
+ /* try all known devices */
+ total_size = 0;
+ openproc();
+ while ((dev = nextproc()) != NULL) {
+ if (is_ide_cdrom_or_tape(dev))
+ continue;
+ if (opt_out_geom)
+ do_geom(dev, 1);
+ if (opt_out_pt_geom)
+ do_pt_geom(dev, 1);
+ if (opt_size)
+ do_size(dev, 1);
+ if (opt_list || verify)
+ do_list(dev, 1);
+ }
+
+ if (opt_size)
+ printf(_("total: %llu blocks\n"), total_size);
+
+ exit(exit_status);
+ }
+
+ if (optind == argc) {
+ if (activate)
+ activate_usage(fdisk ? "sfdisk -A" : progn);
+ else if (unhide)
+ unhide_usage(fdisk ? "sfdisk -U" : progn);
+ else
+ usage();
+ }
+
+ if (opt_list || opt_out_geom || opt_out_pt_geom || opt_size || verify) {
+ while (optind < argc) {
+ if (opt_out_geom)
+ do_geom(argv[optind], 0);
+ if (opt_out_pt_geom)
+ do_pt_geom(argv[optind], 0);
+ if (opt_size)
+ do_size(argv[optind], 0);
+ if (opt_list || verify)
+ do_list(argv[optind], 0);
+ optind++;
+ }
+ exit(exit_status);
+ }
+
+ if (activate) {
+ do_activate(argv+optind, argc-optind, activatearg);
+ exit(exit_status);
+ }
+ if (unhide) {
+ do_unhide(argv+optind, argc-optind, unhidearg);
+ exit(exit_status);
+ }
+ if (do_id) {
+ if ((do_id & PRINT_ID) != 0 && optind != argc-2)
+ fatal(_("usage: sfdisk --print-id device partition-number\n"));
+ else if ((do_id & CHANGE_ID) != 0 && optind != argc-3)
+ fatal(_("usage: sfdisk --change-id device partition-number Id\n"));
+ else if (optind != argc-3 && optind != argc-2)
+ fatal(_("usage: sfdisk --id device partition-number [Id]\n"));
+ do_change_id(argv[optind], argv[optind+1],
+ (optind == argc-2) ? 0 : argv[optind+2]);
+ exit(exit_status);
+ }
+
+ if (optind != argc-1)
+ fatal(_("can specify only one device (except with -l or -s)\n"));
+ dev = argv[optind];
+
+ if (opt_reread)
+ do_reread(dev);
+ else if (restore_sector_file)
+ restore_sectors(dev);
+ else
+ do_fdisk(dev);
+
+ return 0;
+}
+
+/*
+ * H. Listing the current situation
+ */
+
+static int
+my_open (char *dev, int rw, int silent) {
+ int fd, mode;
+
+ mode = (rw ? O_RDWR : O_RDONLY);
+ fd = open(dev, mode);
+ if (fd < 0 && !silent) {
+ perror(dev);
+ if (rw)
+ fatal(_("cannot open %s read-write\n"), dev);
+ else
+ fatal(_("cannot open %s for reading\n"), dev);
+ }
+ return fd;
+}
+
+static void
+do_list (char *dev, int silent) {
+ int fd;
+ struct disk_desc *z;
+
+ fd = my_open(dev, 0, silent);
+ if (fd < 0)
+ return;
+
+ z = &oldp;
+
+ free_sectors();
+ get_cylindersize(dev, fd, dump ? 1 : opt_list ? 0 : 1);
+ get_partitions(dev, fd, z);
+
+ if (opt_list)
+ out_partitions(dev, z);
+
+ if (verify) {
+ if (partitions_ok(z))
+ warn(_("%s: OK\n"), dev);
+ else
+ exit_status = 1;
+ }
+}
+
+static void
+do_geom (char *dev, int silent) {
+ int fd;
+ struct geometry R;
+
+ fd = my_open(dev, 0, silent);
+ if (fd < 0)
+ return;
+
+ R = get_geometry(dev, fd, silent);
+ if (R.cylinders)
+ printf(_("%s: %ld cylinders, %ld heads, %ld sectors/track\n"),
+ dev, R.cylinders, R.heads, R.sectors);
+}
+
+static void
+do_pt_geom (char *dev, int silent) {
+ int fd;
+ struct disk_desc *z;
+ struct geometry R;
+
+ fd = my_open(dev, 0, silent);
+ if (fd < 0)
+ return;
+
+ z = &oldp;
+
+ free_sectors();
+ get_cylindersize(dev, fd, 1);
+ get_partitions(dev, fd, z);
+
+ R = B;
+
+ if (z->partno != 0 && get_fdisk_geometry(z)) {
+ R.heads = F.heads;
+ R.sectors = F.sectors;
+ R.cylindersize = R.heads * R.sectors;
+ R.cylinders = (R.cylindersize == 0) ? 0 :
+ R.total_size / R.cylindersize;
+ }
+
+ if (R.cylinders)
+ printf(_("%s: %ld cylinders, %ld heads, %ld sectors/track\n"),
+ dev, R.cylinders, R.heads, R.sectors);
+}
+
+/* for compatibility with earlier fdisk: provide option -s */
+static void
+do_size (char *dev, int silent) {
+ int fd;
+ unsigned long long size;
+
+ fd = my_open(dev, 0, silent);
+ if (fd < 0)
+ return;
+
+ if (disksize(fd, &size)) {
+ if (!silent) {
+ perror(dev);
+ fatal(_("Cannot get size of %s\n"), dev);
+ }
+ return;
+ }
+
+ size /= 2; /* convert sectors to blocks */
+
+ /* a CDROM drive without mounted CD yields MAXINT */
+ if (silent && size == ((1<<30)-1))
+ return;
+
+ if (silent)
+ printf("%s: %9llu\n", dev, size);
+ else
+ printf("%llu\n", size);
+
+ total_size += size;
+}
+
+/*
+ * Activate: usually one wants to have a single primary partition
+ * to be active. OS/2 fdisk makes non-bootable logical partitions
+ * active - I don't know what that means to OS/2 Boot Manager.
+ *
+ * Call: activate /dev/hda 2 5 7 make these partitions active
+ * and the remaining ones inactive
+ * Or: sfdisk -A /dev/hda 2 5 7
+ *
+ * If only a single partition must be active, one may also use the form
+ * sfdisk -A2 /dev/hda
+ *
+ * With "activate /dev/hda" or "sfdisk -A /dev/hda" the active partitions
+ * are listed but not changed. To get zero active partitions, use
+ * "activate /dev/hda none" or "sfdisk -A /dev/hda none".
+ * Use something like `echo ",,,*" | sfdisk -N2 /dev/hda' to only make
+ * /dev/hda2 active, without changing other partitions.
+ *
+ * A warning will be given if after the change not precisely one primary
+ * partition is active.
+ *
+ * The present syntax was chosen to be (somewhat) compatible with the
+ * activate from the LILO package.
+ */
+static void
+set_active (struct disk_desc *z, char *pnam) {
+ int pno;
+
+ pno = asc_to_index(pnam, z);
+ if (z->partitions[pno].ptype == DOS_TYPE)
+ z->partitions[pno].p.bootable = 0x80;
+}
+
+static void
+do_activate (char **av, int ac, char *arg) {
+ char *dev = av[0];
+ int fd;
+ int rw, i, pno, lpno;
+ struct disk_desc *z;
+
+ z = &oldp;
+
+ rw = (!no_write && (arg || ac > 1));
+ fd = my_open(dev, rw, 0);
+
+ free_sectors();
+ get_cylindersize(dev, fd, 1);
+ get_partitions(dev, fd, z);
+
+ if (!arg && ac == 1) {
+ /* list active partitions */
+ for (pno=0; pno < z->partno; pno++) {
+ if (z->partitions[pno].p.bootable) {
+ lpno = index_to_linux(pno, z);
+ if (pno == linux_to_index(lpno, z))
+ printf("%s\n", partname(dev, lpno, 0));
+ else
+ printf("%s#%d\n", dev, pno);
+ if (z->partitions[pno].p.bootable != 0x80)
+ warn(_("bad active byte: 0x%x instead of 0x80\n"),
+ z->partitions[pno].p.bootable);
+ }
+ }
+ } else {
+ /* clear `active byte' everywhere */
+ for (pno=0; pno < z->partno; pno++)
+ if (z->partitions[pno].ptype == DOS_TYPE)
+ z->partitions[pno].p.bootable = 0;
+
+ /* then set where desired */
+ if (ac == 1)
+ set_active(z, arg);
+ else for(i=1; i<ac; i++)
+ set_active(z, av[i]);
+
+ /* then write to disk */
+ if (write_partitions(dev, fd, z))
+ warn(_("Done\n\n"));
+ else
+ exit_status = 1;
+ }
+ i = 0;
+ for (pno=0; pno < z->partno && pno < 4; pno++)
+ if (z->partitions[pno].p.bootable)
+ i++;
+ if (i != 1)
+ warn(_("You have %d active primary partitions. This does not matter for LILO,\n"
+ "but the DOS MBR will only boot a disk with 1 active partition.\n"), i);
+}
+
+static void
+set_unhidden (struct disk_desc *z, char *pnam) {
+ int pno;
+ unsigned char id;
+
+ pno = asc_to_index(pnam, z);
+ id = z->partitions[pno].p.sys_type;
+ if (id == 0x11 || id == 0x14 || id == 0x16 || id == 0x17)
+ id -= 0x10;
+ else
+ fatal(_("partition %s has id %x and is not hidden\n"), pnam, id);
+ z->partitions[pno].p.sys_type = id;
+}
+
+/*
+ * maybe remove and make part of --change-id
+ */
+static void
+do_unhide (char **av, int ac, char *arg) {
+ char *dev = av[0];
+ int fd, rw, i;
+ struct disk_desc *z;
+
+ z = &oldp;
+
+ rw = !no_write;
+ fd = my_open(dev, rw, 0);
+
+ free_sectors();
+ get_cylindersize(dev, fd, 1);
+ get_partitions(dev, fd, z);
+
+ /* unhide where desired */
+ if (ac == 1)
+ set_unhidden(z, arg);
+ else for(i=1; i<ac; i++)
+ set_unhidden(z, av[i]);
+
+ /* then write to disk */
+ if (write_partitions(dev, fd, z))
+ warn(_("Done\n\n"));
+ else
+ exit_status = 1;
+}
+
+static void
+do_change_id(char *dev, char *pnam, char *id) {
+ int fd, rw, pno;
+ struct disk_desc *z;
+ unsigned long i;
+
+ z = &oldp;
+
+ rw = !no_write;
+ fd = my_open(dev, rw, 0);
+
+ free_sectors();
+ get_cylindersize(dev, fd, 1);
+ get_partitions(dev, fd, z);
+
+ pno = asc_to_index(pnam, z);
+ if (id == 0) {
+ printf("%x\n", z->partitions[pno].p.sys_type);
+ return;
+ }
+ i = strtoul(id, NULL, 16);
+ if (i > 255)
+ fatal(_("Bad Id %lx\n"), i);
+ z->partitions[pno].p.sys_type = i;
+
+ if (write_partitions(dev, fd, z))
+ warn(_("Done\n\n"));
+ else
+ exit_status = 1;
+}
+
+static void
+do_reread(char *dev) {
+ int fd;
+
+ fd = my_open(dev, 0, 0);
+ if (reread_ioctl(fd))
+ do_warn(_("This disk is currently in use.\n"));
+}
+
+/*
+ * I. Writing the new situation
+ */
+
+static void
+do_fdisk(char *dev){
+ int fd;
+ int c, answer;
+ struct stat statbuf;
+ int interactive = isatty(0);
+ struct disk_desc *z;
+
+ if (stat(dev, &statbuf) < 0) {
+ perror(dev);
+ fatal(_("Fatal error: cannot find %s\n"), dev);
+ }
+ if (!S_ISBLK(statbuf.st_mode)) {
+ do_warn(_("Warning: %s is not a block device\n"), dev);
+ no_reread = 1;
+ }
+ fd = my_open(dev, !no_write, 0);
+
+ if (!no_write && !no_reread) {
+ warn(_("Checking that no-one is using this disk right now ...\n"));
+ if (reread_ioctl(fd)) {
+ do_warn(_("\nThis disk is currently in use - repartitioning is probably a bad idea.\n"
+ "Umount all file systems, and swapoff all swap partitions on this disk.\n"
+ "Use the --no-reread flag to suppress this check.\n"));
+ if (!force) {
+ do_warn(_("Use the --force flag to overrule all checks.\n"));
+ exit(1);
+ }
+ } else
+ warn(_("OK\n"));
+ }
+
+ z = &oldp;
+
+ free_sectors();
+ get_cylindersize(dev, fd, 0);
+ get_partitions(dev, fd, z);
+
+ printf(_("Old situation:\n"));
+ out_partitions(dev, z);
+
+ if (one_only && (one_only_pno = linux_to_index(one_only, z)) < 0)
+ fatal(_("Partition %d does not exist, cannot change it\n"), one_only);
+
+ z = &newp;
+
+ while(1) {
+
+ read_input(dev, interactive, z);
+
+ printf(_("New situation:\n"));
+ out_partitions(dev, z);
+
+ if (!partitions_ok(z) && !force) {
+ if (!interactive)
+ fatal(_("I don't like these partitions - nothing changed.\n"
+ "(If you really want this, use the --force option.)\n"));
+ else
+ do_warn(_("I don't like this - probably you should answer No\n"));
+ }
+ ask:
+ if (interactive) {
+ if (no_write)
+ printf(_("Are you satisfied with this? [ynq] "));
+ else
+ printf(_("Do you want to write this to disk? [ynq] "));
+ answer = c = getchar();
+ while (c != '\n' && c != EOF)
+ c = getchar();
+ if (c == EOF)
+ printf(_("\nsfdisk: premature end of input\n"));
+ if (c == EOF || answer == 'q' || answer == 'Q') {
+ fatal(_("Quitting - nothing changed\n"));
+ } else if (answer == 'n' || answer == 'N') {
+ continue;
+ } else if (answer == 'y' || answer == 'Y') {
+ break;
+ } else {
+ printf(_("Please answer one of y,n,q\n"));
+ goto ask;
+ }
+ } else
+ break;
+ }
+
+ if (write_partitions(dev, fd, z))
+ printf(_("Successfully wrote the new partition table\n\n"));
+ else
+ exit_status = 1;
+
+ reread_disk_partition(dev, fd);
+
+ warn(_("If you created or changed a DOS partition, /dev/foo7, say, then use dd(1)\n"
+ "to zero the first 512 bytes: dd if=/dev/zero of=/dev/foo7 bs=512 count=1\n"
+ "(See fdisk(8).)\n"));
+
+ sync(); /* superstition */
+ sleep(3);
+ exit(exit_status);
+}
projects / busybox4maemo / commitdiff