diff options
| author | Karel Zak <kzak@redhat.com> | 2006-12-07 00:25:37 +0100 |
|---|---|---|
| committer | Karel Zak <kzak@redhat.com> | 2006-12-07 00:25:37 +0100 |
| commit | 5c36a0eb7cdb0360f9afd5d747c321f423b35984 (patch) | |
| tree | 147599a77eaff2b5fbc0d389e89d2b51602326c0 /disk-utils/sfdisk.c | |
| parent | 2b6fc908bc368b540845a313c3b8a867c5ad9a42 (diff) | |
| download | util-linux-5c36a0eb7cdb0360f9afd5d747c321f423b35984.tar.gz | |
Imported from util-linux-2.9i tarball.v2.9i
Diffstat (limited to 'disk-utils/sfdisk.c')
| -rw-r--r-- | disk-utils/sfdisk.c | 2857 |
1 files changed, 0 insertions, 2857 deletions
diff --git a/disk-utils/sfdisk.c b/disk-utils/sfdisk.c deleted file mode 100644 index 8fbe778fea..0000000000 --- a/disk-utils/sfdisk.c +++ /dev/null @@ -1,2857 +0,0 @@ -/* - * 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 - */ - -#define PROGNAME "sfdisk" -#define VERSION "3.07" -#define DATE "980518" - -#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 <linux/unistd.h> /* _syscall */ -#include <linux/hdreg.h> /* HDIO_GETGEO */ -#include <linux/fs.h> /* BLKGETSIZE */ - -#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 */ -int Linux = 0; /* 1: suppress warnings irrelevant for Linux */ -int DOS = 0; /* 1: shift extended partitions by #sectors, not 1 */ -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; - -void -warn(char *s, ...) { - va_list p; - - va_start(p, s); - fflush(stdout); - if (!quiet) - vfprintf (stderr, s, p); - va_end(p); -} - -void -error(char *s, ...) { - va_list p; - - va_start(p, s); - fflush(stdout); - fprintf(stderr, "\n" PROGNAME ": "); - vfprintf(stderr, s, p); - va_end(p); -} - -void -fatal(char *s, ...) { - va_list p; - - va_start(p, s); - fflush(stdout); - fprintf(stderr, "\n" PROGNAME ": "); - vfprintf(stderr, s, p); - va_end(p); - exit(1); -} - -/* - * 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. - */ -#ifndef __alpha__ -static -_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, - loff_t *, res, uint, wh); -#endif - -int -sseek(char *dev, unsigned int fd, unsigned long s) { - loff_t in, out; - in = ((loff_t) s << 9); - out = 1; - -#ifndef __alpha__ - 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", - (uint)(in>>32), (uint)(in & 0xffffffff), - (uint)(out>>32), (uint)(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; - -void -free_sectors(void) { - struct sector *s; - - while (sectorhead) { - s = sectorhead; - sectorhead = s->next; - free(s); - } -} - -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)) { - 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; -} - -int -msdos_signature (struct sector *s) { - if (*(unsigned short *) (s->data + 0x1fe) != 0xaa55) { - error("ERROR: sector %lu does not have an msdos signature\n", - s->sectornumber); - return 0; - } - return 1; -} - -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; -} - -void -ulong_to_chars(unsigned long u, char *uu) { - int i; - - for(i=0; i<4; i++) { - uu[i] = (u & 0xff); - u >>= 8; - } -} - -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; -} - -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; -} - -void reread_disk_partition(char *dev, int fd); - -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; - * }; - */ - -unsigned long cylindersize; -unsigned long heads, sectors, cylinders; -unsigned long specified_heads, specified_sectors, specified_cylinders; - -void -get_cylindersize(char *dev, int fd, int silent) { - struct hd_geometry g; - int ioctl_ok = 0; - - heads = sectors = cylinders = 0; - - if (!ioctl(fd, HDIO_GETGEO, &g)) { - ioctl_ok = 1; - - heads = g.heads; - sectors = g.sectors; - cylinders = g.cylinders; - } - - if (specified_heads) - heads = specified_heads; - if (specified_sectors) - sectors = specified_sectors; - if (specified_cylinders) - cylinders = specified_cylinders; - - cylindersize = heads * sectors; - - if (ioctl_ok) { - if (g.start && !force) { - warn( - "Warning: start=%d - 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", g.start); - exit(1); - } - if (heads != g.heads) - warn("Warning: HDIO_GETGEO says that there are %d heads\n", - g.heads); - if (sectors != g.sectors) - warn("Warning: HDIO_GETGEO says that there are %d sectors\n", - g.sectors); - if (cylinders != g.cylinders) - warn("Warning: HDIO_GETGEO says that there are %d cylinders\n", - g.cylinders); - } else if (!silent) - if (!heads || !sectors || !cylinders) - printf("Disk %s: cannot get geometry\n", dev); - if (sectors > 63) - warn("Warning: unlikely number of sectors (%d) - usually at most 63\n" - "This will give problems with all software that uses C/H/S addressing.\n", - sectors); - if (!silent) - printf("\nDisk %s: %lu heads, %lu sectors, %lu cylinders\n", - dev, heads, sectors, cylinders); -} - -typedef struct { unsigned char h,s,c; } chs; /* has some c bits in s */ -chs zero_chs = { 0,0,0 }; - -typedef struct { unsigned long h,s,c; } longchs; -longchs zero_longchs; - -chs -longchs_to_chs (longchs aa) { - 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 (heads && sectors) { - a.h = heads - 1; - a.s = sectors | 0xc0; - a.c = 0xff; - } else - a = zero_chs; - return a; -} - -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; -} - -longchs -ulong_to_longchs (unsigned long sno) { - longchs aa; - - if (heads && sectors && cylindersize) { - aa.s = 1 + sno % sectors; - aa.h = (sno / sectors) % heads; - aa.c = sno / cylindersize; - return aa; - } else { - return zero_longchs; - } -} - -unsigned long -longchs_to_ulong (longchs aa) { - return (aa.c*cylindersize + aa.h*sectors + aa.s - 1); -} - -chs -ulong_to_chs (unsigned long sno) { - return longchs_to_chs(ulong_to_longchs(sno)); -} - -unsigned long -chs_to_ulong (chs a) { - return longchs_to_ulong(chs_to_longchs(a)); -} - -int -is_equal_chs (chs a, chs b) { - return (a.h == b.h && a.s == b.s && a.c == b.c); -} - -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 (heads && aa.h >= heads) { - warn("%s of partition %s has impossible value for head: " - "%d (should be in 0-%d)\n", w, v, aa.h, heads-1); - ret = 0; - } - if (sectors && (aa.s == 0 || aa.s > sectors)) { - warn("%s of partition %s has impossible value for sector: " - "%d (should be in 1-%d)\n", w, v, aa.s, sectors); - ret = 0; - } - if (cylinders && aa.c >= cylinders) { - warn("%s of partition %s has impossible value for cylinders: " - "%d (should be in 0-%d)\n", w, v, aa.c, 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 - -/* - * List of system Id's, adapted from fdisk 2.0d and <linux/genhd.h> - * and SFS and several other sources. - */ -struct systypes { - unsigned char type; - char *name; -} sys_types[] = { - {0, "Empty"}, - {1, "DOS 12-bit FAT"}, /* Primary DOS with 12-bit FAT */ - {2, "XENIX /"}, /* XENIX / filesystem */ - {3, "XENIX /usr"}, /* XENIX /usr filesystem */ - {4, "DOS 16-bit FAT <32M"}, /* Primary DOS with 16-bit FAT */ - {5, "DOS Extended"}, /* DOS 3.3+ extended partition */ - {6, "DOS 16-bit FAT >=32M"}, - {7, "HPFS / NTFS"}, - {8, "AIX boot or SplitDrive"}, - {9, "AIX data or Coherent"}, - {0x0a, "OS/2 Boot Manager"}, - {0x0b, "Win95 FAT32"}, - {0x0c, "Win95 FAT32 (LBA)"}, - {0x0e, "Win95 FAT16 (LBA)"}, - {0x0f, "Win95 Extended (LBA)"}, - {0x10, "OPUS"}, - {0x11, "Hidden DOS FAT12"}, - {0x12, "Compaq diagnostics"}, - {0x14, "Hidden DOS FAT16"}, - {0x16, "Hidden DOS FAT16 (big)"}, - {0x17, "Hidden HPFS/NTFS"}, - {0x18, "AST Windows swapfile"}, - {0x24, "NEC DOS"}, - {0x3c, "PartitionMagic recovery"}, - {0x40, "Venix 80286"}, - {0x41, "Linux/MINIX (sharing disk with DRDOS)"}, - {0x42, "SFS or Linux swap (sharing disk with DRDOS)"}, - {0x43, "Linux native (sharing disk with DRDOS)"}, - {0x50, "DM (disk manager)"}, - {0x51, "DM6 Aux1 (or Novell)"}, - {0x52, "CP/M or Microport SysV/AT"}, - {0x53, "DM6 Aux3"}, - {0x54, "DM6"}, - {0x55, "EZ-Drive (disk manager)"}, - {0x56, "Golden Bow (disk manager)"}, - {0x5c, "Priam Edisk (disk manager)"}, - {0x61, "SpeedStor"}, - {0x63, "GNU HURD or Mach or Sys V/386 (such as ISC UNIX)"}, - {0x64, "Novell Netware 286"}, - {0x65, "Novell Netware 386"}, - {0x70, "DiskSecure Multi-Boot"}, - {0x75, "PC/IX"}, - {0x77, "QNX4.x"}, - {0x78, "QNX4.x 2nd part"}, - {0x79, "QNX4.x 3rd part"}, - {0x80, "MINIX until 1.4a"}, - {0x81, "MINIX / old Linux"}, - {0x82, "Linux swap"}, - {0x83, "Linux native"}, - {0x84, "OS/2 hidden C: drive"}, - {0x85, "Linux extended"}, - {0x86, "NTFS volume set"}, - {0x87, "NTFS volume set"}, - {0x93, "Amoeba"}, - {0x94, "Amoeba BBT"}, /* (bad block table) */ - {0xa0, "IBM Thinkpad hibernation"}, /* according to dan@fch.wimsey.bc.ca */ - {0xa5, "BSD/386"}, /* 386BSD */ - {0xa6, "OpenBSD"}, - {0xa7, "NeXTSTEP 486"}, - {0xb7, "BSDI fs"}, - {0xb8, "BSDI swap"}, - {0xc1, "DRDOS/sec (FAT-12)"}, - {0xc4, "DRDOS/sec (FAT-16, < 32M)"}, - {0xc6, "DRDOS/sec (FAT-16, >= 32M)"}, - {0xc7, "Syrinx"}, - {0xdb, "CP/M or Concurrent CP/M or Concurrent DOS or CTOS"}, - {0xe1, "DOS access or SpeedStor 12-bit FAT extended partition"}, - {0xe3, "DOS R/O or SpeedStor"}, - {0xe4, "SpeedStor 16-bit FAT extended partition < 1024 cyl."}, - {0xf1, "SpeedStor"}, - {0xf2, "DOS 3.3+ secondary"}, - {0xf4, "SpeedStor large partition"}, - {0xfe, "SpeedStor >1024 cyl. or LANstep"}, - {0xff, "Xenix Bad Block Table"} -}; - - -const char * -sysname(unsigned char type) { - struct systypes *s; - - for (s = sys_types; s - sys_types < SIZE(sys_types); s++) - if (s->type == type) - return s->name; - return "Unknown"; -} - -void -list_types(void) { - struct systypes *s; - - printf("Id Name\n\n"); - for (s = sys_types; s - sys_types < SIZE(sys_types); s++) - printf("%2x %s\n", s->type, s->name); -} - -int -is_extended(unsigned char type) { - return (type == EXTENDED_PARTITION - || type == LINUX_EXTENDED - || type == WIN98_EXTENDED); -} - -int -is_bsd(unsigned char type) { - return (type == BSD_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 */ -}; - -/* Unfortunately, partitions are not aligned, and non-Intel machines - are unhappy with non-aligned integers. So, we need a copy by hand. */ -int -copy_to_int(unsigned char *cp) { - unsigned int m; - - m = *cp++; - m += (*cp++ << 8); - m += (*cp++ << 16); - m += (*cp++ << 24); - return m; -} - -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); -} - -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); -} - -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; - -struct part_desc * -outer_extended_partition(struct part_desc *p) { - while (p->ep) - p = p->ep; - return p; -} - -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[128]; - int partno; -} oldp, newp; - -/* determine where on the disk this information goes */ -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 */ -int reread_ioctl(int fd) { - if(ioctl(fd, BLKRRPART)) { - perror("BLKRRPART"); - return -1; - } - return 0; -} - -/* reread after writing */ -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)) - printf("The command to re-read the partition table failed\n" - "Reboot your system now, before using mkfs\n"); - - if (close(fd)) { - perror(dev); - printf("Error closing %s\n", dev); - } - printf("\n"); -} - -/* find Linux name of this partition, assuming that it will have a name */ -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; -} - -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; -} - -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; - -void -set_format(char c) { - switch(c) { - default: - printf("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; - } -} - -unsigned long -unitsize(int format) { - default_format = (cylindersize ? F_CYLINDER : F_MEGABYTE); - if (!format && !(format = specified_format)) - format = default_format; - - switch(format) { - default: - case F_CYLINDER: - if(cylindersize) return cylindersize; - case F_SECTOR: - return 1; - case F_BLOCK: - return 2; - case F_MEGABYTE: - return 2048; - } -} - -unsigned long -get_disksize(int format) { - unsigned long cs = cylinders; - if (cs && leave_last) - cs--; - return (cs * cylindersize) / unitsize(format); -} - -void -out_partition_header(char *dev, int format) { - if (dump) { - printf("# partition table of %s\n", dev); - printf("unit: sectors\n\n"); - return; - } - - default_format = (cylindersize ? F_CYLINDER : F_MEGABYTE); - if (!format && !(format = specified_format)) - format = default_format; - - switch(format) { - default: - printf("unimplemented format - using %s\n", - cylindersize ? "cylinders" : "sectors"); - case F_CYLINDER: - if (cylindersize) { - printf("Units = cylinders of %lu bytes, blocks of 1024 bytes" - ", counting from %d\n\n", - 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 = megabytes of 1048576 bytes, blocks of 1024 bytes" - ", counting from %d\n\n", increment); - printf(" Device Boot Start End MB #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(' '); -} - -void -out_partition(char *dev, int format, struct part_desc *p, struct disk_desc *z) { - 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("%8s%-2u", dev, lpno); /* 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=%8lu", 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 (cylindersize) { - out_rounddown(6, start, cylindersize, increment); - out_roundup(6, end, cylindersize, increment); - out_roundup_size(6, size, cylindersize); - out_rounddown(8, size, 2, 0); - break; - } - /* fall through */ - default: - case F_SECTOR: - out_rounddown(9, start, 1, increment); - out_roundup(9, end, 1, increment); - out_rounddown(9, 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(8, 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(8, 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) : 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)) - printf("\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) : 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)) - printf("\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(cylinders && cylinders < 1024 && bb.c > cylinders) - printf("partition ends on cylinder %ld, beyond the end of the disk\n", - bb.c); - } -} - -void -out_partitions(char *dev, struct disk_desc *z) { - int pno, format = 0; - - if (z->partno == 0) - printf("No partitions found\n"); - else { - out_partition_header(dev, format); - for(pno=0; pno < z->partno; pno++) { - out_partition(dev, format, &(z->partitions[pno]), z); - 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)); -} - -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; -} - -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 ", PNO(p)); - warn("the partition table (sector %lu),\n", q->start); - warn("and will destroy it when filled\n"); - 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"); - warn(" (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 (cylindersize) { - for(p = partitions; p < partitions+partno; p++) - if (p->size) { - if(p->start % cylindersize != 0 - && (!p->ep || p->start / cylindersize != p->ep->start / cylindersize) - && (p->p.start_sect >= cylindersize)) { - warn("Warning: partition %s does not start " - "at a cylinder boundary\n", PNO(p)); - if (!Linux) - return 0; - } - if((p->start + p->size) % 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\n" "LILO 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) : 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) : 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(cylinders && cylinders < 1024 && bb.c > 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; - - 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)) { - printf("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)) { - if (next) - printf("tree of partitions?\n"); - partitions[pno].start = next = start + p.start_sect; - 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 8 -#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) - return; - - bp = bp0 = &l->d_partitions[0]; - while (bp - bp0 <= BSD_MAXPARTITIONS) { - if (pno+1 >= SIZE(z->partitions)) { - printf("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; -} - -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; - - 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) { - printf("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))) { - printf("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) { - printf("strange..., an extended partition of size 0?\n"); - continue; - } - extended_partition(dev, fd, &partitions[i], z); - } - if (is_bsd(partitions[i].p.sys_type)) { - if (!partitions[i].size) { - printf("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; -} - -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)) { - printf(" %s: unrecognized partition\n", dev); - return; - } -} - -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) { - printf("-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; - copy_from_part(&(p->p), s->data + p->offset); - *(unsigned short *)(&(s->data[0x1fe])) = 0xaa55; - } - 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) - -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 */ -int -get_ul(char *u, unsigned long *up, unsigned long def, int base) { - char *nu; - - if (*u) { - errno = 0; - *up = strtoul(u, &nu, base); - if (errno == ERANGE) { - printf("number too big\n"); - return -1; - } - if (*nu) { - printf("trailing junk after number\n"); - return -1; - } - } 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 */ -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 */ -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 */ -/* ep is 0 or points to surrounding extended partition */ -int -compute_start_sect(struct part_desc *p, struct part_desc *ep) { - unsigned long base; - int inc = (DOS && sectors) ? 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); - p->p.end_chs = ulong_to_chs(p->start + p->size - 1); - } - p->p.nr_sects = p->size; - return 1; -} - -/* build the extended partition surrounding a given logical partition */ -int -build_surrounding_extended(struct part_desc *p, struct part_desc *ep, - struct disk_desc *z) { - int inc = (DOS && sectors) ? 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; -} - -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("%8s%d: ", dev, lpno); - } - - /* 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) { - printf("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 (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: exceeds max allowable size (%lu)\n", 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); - } - { 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); - } - - 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); - - 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 */ -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; -} - -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)) { - printf("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; - } - } -} - -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. -<start> <size> <type [E,S,L,X,hex]> <bootable [-,*]> <c,h,s> <c,h,s> -Usually you only need to specify <start> and <size> (and perhaps <type>). -"); - 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(PROGNAME " version " VERSION " (aeb@cwi.nl, " DATE ")\n"); -} - -static void -usage(void) { - version(); - printf("Usage: - " PROGNAME " [options] device ... -device: something like /dev/hda or /dev/sda -useful options: - -s [or --show-size]: list size of a partition - -c [or --id]: print or change partition Id - -l [or --list]: list partitions of each device - -d [or --dump]: idem, but in a format suitable for later input - -i [or --increment]: number cylinders etc. from 1 instead of from 0 - -uS, -uB, -uC, -uM: accept/report in units of sectors/blocks/cylinders/MB - -T [or --list-types]:list the known partition types - -D [or --DOS]: for DOS-compatibility: waste a little space - -R [or --re-read]: make kernel reread partition table - -N# : change only the partition with number # - -n : do not actually write to disk - -O file : save the sectors that will be overwritten to file - -I file : restore these sectors again - -v [or --version]: print version - -? [or --help]: print this message -dangerous options: - -g [or --show-geometry]: print the kernel's idea of the geometry - -x [or --show-extended]: also list extended partitions on output - or expect descriptors for them on input - -L [or --Linux]: do not complain about things irrelevant for Linux - -q [or --quiet]: suppress warning messages - You can override the detected geometry using: - -C# [or --cylinders #]:set the number of cylinders to use - -H# [or --heads #]: set the number of heads to use - -S# [or --sectors #]: set the number of sectors to use - You can disable all consistency checking with: - -f [or --force]: do what I say, even if it is stupid -"); - exit(1); -} - -static void -activate_usage(char *progn) { - printf("Usage: - %s device list active partitions on device - %s device n1 n2 ... activate partitions n1 ..., inactivate the rest - %s device activate partition n, inactivate the other ones -", progn, progn, PROGNAME " -An"); - exit(1); -} - -static void -unhide_usage(char *progn) { - exit(1); -} - -static char short_opts[] = "cdfgilnqsu:vx?1A::C:DH: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' }, - { "activate", optional_argument, NULL, 'A' }, - { "DOS", no_argument, NULL, 'D' }, - { "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 } -}; - -/* default devices to list */ -static struct devd { - char *pref, *letters; -} defdevs[] = { - { "hd", "abcdefgh" }, - { "sd", "abcde" }, - { "xd", "ab" } -}; - -int -is_ide_cdrom(char *device) { - /* 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. So try to be careful. - This only works since 2.1.73. */ - - FILE *procf; - char buf[100]; - struct stat statbuf; - - sprintf(buf, "/proc/ide/%s/media", device+5); - procf = fopen(buf, "r"); - if (procf != NULL && fgets(buf, sizeof(buf), procf)) - return !strncmp(buf, "cdrom", 5); - - /* Now when this proc file does not exist, skip the - device when it is read-only. */ - if (stat(device, &statbuf) == 0) - return (statbuf.st_mode & 0222) == 0; - - return 0; -} - -void do_list(char *dev, int silent); -void do_size(char *dev, int silent); -void do_geom(char *dev, int silent); -void do_fdisk(char *dev); -void do_reread(char *dev); -void do_change_id(char *dev, char *part, char *id); -void do_unhide(char **av, int ac, char *arg); -void do_activate(char **av, int ac, char *arg); - -int 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_reread = 0; - int activate = 0; - int do_id = 0; - int unhide = 0; - int fdisk = 0; - char *activatearg = 0; - char *unhidearg = 0; - - 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 `fdisk -A' */ -#if 0 /* not important enough to deserve a name */ - else if (!strcmp(progn, "unhide")) - unhide = 1; /* equivalent to `fdisk -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 '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': - specified_cylinders = atoi(optarg); break; - case 'D': - DOS = 1; break; - case 'H': - specified_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': - specified_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_size || verify)) { - struct devd *dp; - char *lp; - char device[10]; - - total_size = 0; - - for(dp = defdevs; dp-defdevs < SIZE(defdevs); dp++) { - lp = dp->letters; - while(*lp) { - sprintf(device, "/dev/%s%c", dp->pref, *lp++); - if (!strcmp(dp->pref, "hd") && is_ide_cdrom(device)) - continue; - if (opt_out_geom) - do_geom(device, 1); - if (opt_size) - do_size(device, 1); - if (opt_list || verify) - do_list(device, 1); - } - } - - if (opt_size) - printf("total: %d blocks\n", total_size); - - exit(exit_status); - } - - if (optind == argc) { - if (activate) - activate_usage(fdisk ? "fdisk -A" : progn); - else if (unhide) - unhide_usage(fdisk ? "fdisk -U" : progn); - else - usage(); - } - - if (opt_list || opt_out_geom || opt_size || verify) { - while (optind < argc) { - if (opt_out_geom) - do_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: fdisk --print-id device partition-number\n"); - else if ((do_id & CHANGE_ID) != 0 && optind != argc-3) - fatal("usage: fdisk --change-id device partition-number Id\n"); - else if (optind != argc-3 && optind != argc-2) - fatal("usage: fdisk --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 - */ - -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); - fatal("cannot open %s %s\n", dev, rw ? "read-write" : "for reading"); - } - return fd; -} - -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; - } -} - -void -do_geom (char *dev, int silent) { - int fd; - struct hd_geometry g; - - fd = my_open(dev, 0, silent); - if (fd < 0) - return; - - /* get_cylindersize(dev, fd, silent); */ - if (!ioctl(fd, HDIO_GETGEO, &g)) - printf("%s: %d cylinders, %d heads, %d sectors/track\n", - dev, g.cylinders, g.heads, g.sectors); - else - printf("%s: unknown geometry\n", dev); -} - -/* for compatibility with earlier fdisk: provide option -s */ -void -do_size (char *dev, int silent) { - int fd, size; - - fd = my_open(dev, 0, silent); - if (fd < 0) - return; - - if(ioctl(fd, BLKGETSIZE, &size)) { - if(!silent) { - perror(dev); - fatal("BLKGETSIZE ioctl failed for %s\n", dev); - } - return; - } - - size /= 2; /* convert sectors to blocks */ - if (silent) - printf("%s: %9d\n", dev, size); - else - printf("%d\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: fdisk -A /dev/hda 2 5 7 - * - * If only a single partition must be active, one may also use the form - * fdisk -A2 /dev/hda - * - * With "activate /dev/hda" or "fdisk -A /dev/hda" the active partitions - * are listed but not changed. To get zero active partitions, use - * "activate /dev/hda none" or "fdisk -A /dev/hda none". - * Use something like `echo ",,,*" | fdisk -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. - */ -void -set_active (struct disk_desc *z, char *pnam) { - int pno; - - pno = asc_to_index(pnam, z); - z->partitions[pno].p.bootable = 0x80; -} - -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%d\n", dev, lpno); - 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++) - 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); -} - -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 - */ -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; -} - -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 %x\n", i); - z->partitions[pno].p.sys_type = i; - - if(write_partitions(dev, fd, z)) - warn("Done\n\n"); - else - exit_status = 1; -} - -void -do_reread(char *dev) { - int fd; - - fd = my_open(dev, 0, 0); - if(reread_ioctl(fd)) - printf("This disk is currently in use.\n"); -} - -/* - * I. Writing the new situation - */ - -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)) { - warn("Warning: %s is not a block device\n", dev); - } - 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)) { - printf(" -This disk is currently in use - repartitioning is probably a bad idea. -Umount all file systems, and swapoff all swap partitions on this disk. -Use the --no-reread flag to suppress this check.\n"); - if (!force) { - printf("Use the --force flag to overrule all checks.\n"); - exit(1); - } - } else - warn("OK"); - } - - 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 - printf("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("\nfdisk: 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); -} |