From 5c4ff91fbb87d864971770db8d2b598bf12f2d2d Mon Sep 17 00:00:00 2001 From: Yoshihiro Takahashi Date: Sun, 27 Oct 2002 16:43:59 +0000 Subject: [PATCH] Merged various changes from src/sbin/fdisk/fdisk.c revisions up to 1.66. --- sbin/fdisk_pc98/fdisk.c | 1194 ++++++++++++++------------------------- 1 file changed, 431 insertions(+), 763 deletions(-) diff --git a/sbin/fdisk_pc98/fdisk.c b/sbin/fdisk_pc98/fdisk.c index 4427454d2cd5..2e617be88137 100644 --- a/sbin/fdisk_pc98/fdisk.c +++ b/sbin/fdisk_pc98/fdisk.c @@ -29,14 +29,19 @@ static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ +#include #include #include +#include #include +#include #include #include #include #include #include +#include +#include #include #include #include @@ -47,6 +52,10 @@ int iotest; #define LBUF 100 static char lbuf[LBUF]; +#ifndef PC98 +#define MBRSIGOFF 510 +#endif + /* * * Ported to 386bsd by Julian Elischer Thu Oct 15 20:26:46 PDT 1992 @@ -57,71 +66,55 @@ static char lbuf[LBUF]; */ #define Decimal(str, ans, tmp) if (decimal(str, &tmp, ans)) ans = tmp -#define Hex(str, ans, tmp) if (hex(str, &tmp, ans)) ans = tmp #define String(str, ans, len) {char *z = ans; char **dflt = &z; if (string(str, dflt)) strncpy(ans, *dflt, len); } #define RoundCyl(x) ((((x) + cylsecs - 1) / cylsecs) * cylsecs) #define MAX_SEC_SIZE 2048 /* maximum section size that is supported */ #define MIN_SEC_SIZE 512 /* the sector size to start sensing at */ -int secsize = 0; /* the sensed sector size */ +static int secsize = 0; /* the sensed sector size */ -const char *disk; -const char *disks[] = -{ - "/dev/ad0", "/dev/wd0", "/dev/da0", "/dev/od0", 0 -}; +static char *disk; -struct disklabel disklabel; /* disk parameters */ +static int cyls, sectors, heads, cylsecs, disksecs; -int cyls, sectors, heads, cylsecs, disksecs; - -struct mboot -{ +#ifdef PC98 +struct mboot { unsigned char padding[2]; /* force the longs to be long aligned */ -#ifdef PC98 unsigned char bootinst[510]; -#else - unsigned char bootinst[DOSPARTOFF]; - struct dos_partition parts[4]; -#endif unsigned short int signature; - -#ifdef PC98 struct dos_partition parts[8]; -#endif - /* room to read in MBRs that are bigger then DEV_BSIZE */ unsigned char large_sector_overflow[MAX_SEC_SIZE-MIN_SEC_SIZE]; }; -struct mboot mboot; +#else /* PC98 */ +struct mboot { + unsigned char padding[2]; /* force the longs to be long aligned */ + unsigned char *bootinst; /* boot code */ + off_t bootinst_size; + struct dos_partition parts[4]; +}; +#endif /* PC98 */ + +static struct mboot mboot; +static int fd; #define ACTIVE 0x80 #define BOOT_MAGIC 0xAA55 -int dos_cyls; -int dos_heads; -int dos_sectors; -int dos_cylsecs; +static uint dos_cyls; +static uint dos_heads; +static uint dos_sectors; +static uint dos_cylsecs; -#ifdef PC98 -#define DOSSECT(s,c) (s) -#define DOSCYL(c) (c) -#else +#ifndef PC98 #define DOSSECT(s,c) ((s & 0x3f) | ((c >> 2) & 0xc0)) #define DOSCYL(c) (c & 0xff) #endif -static int partition = -1; - #define MAX_ARGS 10 static int current_line_number; -static int geom_processed = 0; -static int part_processed = 0; -static int active_processed = 0; - - typedef struct cmd { char cmd; int n_args; @@ -131,27 +124,29 @@ typedef struct cmd { } args[MAX_ARGS]; } CMD; - static int B_flag = 0; /* replace boot code */ +#ifndef PC98 static int I_flag = 0; /* use entire disk for FreeBSD */ +#endif static int a_flag = 0; /* set active partition */ +#ifndef PC98 static char *b_flag = NULL; /* path to boot code */ +#endif static int i_flag = 0; /* replace partition data */ static int u_flag = 0; /* update partition data */ static int s_flag = 0; /* Print a summary and exit */ -static int t_flag = 0; /* test only, if f_flag is given */ +static int t_flag = 0; /* test only */ static char *f_flag = NULL; /* Read config info from file */ static int v_flag = 0; /* Be verbose */ -struct part_type -{ - unsigned char type; - char *name; -}part_types[] = +static struct part_type { + unsigned char type; + const char *name; +} part_types[] = { +#ifdef PC98 {0x00, "unused"} ,{0x01, "Primary DOS with 12 bit FAT"} -#ifdef PC98 ,{0x11, "MSDOS"} ,{0x20, "MSDOS"} ,{0x21, "MSDOS"} @@ -180,52 +175,6 @@ struct part_type ,{0x65, "Novell Netware 3.xx"} ,{0x75, "PCIX"} ,{0x40, "Minix"} -#else - ,{0x02, "XENIX / file system"} - ,{0x03, "XENIX /usr file system"} - ,{0x04, "Primary DOS with 16 bit FAT (<= 32MB)"} - ,{0x05, "Extended DOS"} - ,{0x06, "Primary 'big' DOS (> 32MB)"} - ,{0x07, "OS/2 HPFS, NTFS, QNX or Advanced UNIX"} - ,{0x08, "AIX file system"} - ,{0x09, "AIX boot partition or Coherent"} - ,{0x0A, "OS/2 Boot Manager or OPUS"} - ,{0x0B, "DOS or Windows 95 with 32 bit FAT"} - ,{0x0C, "DOS or Windows 95 with 32 bit FAT, LBA"} - ,{0x0E, "Primary 'big' DOS (> 32MB, LBA)"} - ,{0x0F, "Extended DOS, LBA"} - ,{0x10, "OPUS"} - ,{0x40, "VENIX 286"} - ,{0x50, "DM"} - ,{0x51, "DM"} - ,{0x52, "CP/M or Microport SysV/AT"} - ,{0x56, "GB"} - ,{0x61, "Speed"} - ,{0x63, "ISC UNIX, other System V/386, GNU HURD or Mach"} - ,{0x64, "Novell Netware 2.xx"} - ,{0x65, "Novell Netware 3.xx"} - ,{0x75, "PCIX"} - ,{0x80, "Minix 1.1 ... 1.4a"} - ,{0x81, "Minix 1.4b ... 1.5.10"} - ,{0x82, "Linux swap or Solaris x86"} - ,{0x83, "Linux file system"} - ,{0x93, "Amoeba file system"} - ,{0x94, "Amoeba bad block table"} - ,{0x9F, "BSD/OS"} - ,{0xA5, "FreeBSD/NetBSD/386BSD"} - ,{0xA6, "OpenBSD"} - ,{0xA7, "NEXTSTEP"} - ,{0xA9, "NetBSD"} - ,{0xB7, "BSDI BSD/386 file system"} - ,{0xB8, "BSDI BSD/386 swap"} - ,{0xDB, "Concurrent CPM or C.DOS or CTOS"} - ,{0xE1, "Speed"} - ,{0xE3, "Speed"} - ,{0xE4, "Speed"} - ,{0xF1, "Speed"} - ,{0xF2, "DOS 3.3+ Secondary"} - ,{0xF4, "Speed"} - ,{0xFF, "BBT (Bad Blocks Table)"} #endif }; @@ -234,45 +183,46 @@ static void print_part(int i); static void init_sector0(unsigned long start); static void init_boot(void); static void change_part(int i); -static void print_params(); +static void print_params(void); static void change_active(int which); -static void change_code(); -static void get_params_to_use(); +static void change_code(void); +static void get_params_to_use(void); +static char *get_rootdisk(void); #ifdef PC98 -static void dos(int sec, int size, unsigned short *c, unsigned char *s, - unsigned char *h); +static void dos(int sec, int size, + unsigned short *c, unsigned char *s, unsigned char *h); #else -static void dos(int sec, int size, unsigned char *c, unsigned char *s, - unsigned char *h); +static void dos(struct dos_partition *partp); #endif -static int open_disk(int u_flag); +static int open_disk(int flag); static ssize_t read_disk(off_t sector, void *buf); static ssize_t write_disk(off_t sector, void *buf); -static int get_params(); -static int read_s0(); -static int write_s0(); -static int ok(char *str); -static int decimal(char *str, int *num, int deflt); -static char *get_type(int type); +static int get_params(void); +static int read_s0(void); +static int write_s0(void); +static int ok(const char *str); +static int decimal(const char *str, int *num, int deflt); +static const char *get_type(int type); static int read_config(char *config_file); static void reset_boot(void); -static void usage(void); -#if 0 -static int hex(char *str, int *num, int deflt); +#ifndef PC98 +static int sanitize_partition(struct dos_partition *); #endif +static void usage(void); #ifdef PC98 static int string(char *str, char **ans); #endif - - int main(int argc, char *argv[]) { + struct stat sb; int c, i; + int partition = -1; + struct dos_partition *partp; #ifdef PC98 - while ((c = getopt(argc, argv, "Bab:f:istuv12345678")) != -1) + while ((c = getopt(argc, argv, "Ba:f:istuv12345678")) != -1) #else while ((c = getopt(argc, argv, "BIab:f:istuv1234")) != -1) #endif @@ -280,15 +230,19 @@ main(int argc, char *argv[]) case 'B': B_flag = 1; break; +#ifndef PC98 case 'I': I_flag = 1; break; +#endif case 'a': a_flag = 1; break; +#ifndef PC98 case 'b': b_flag = optarg; break; +#endif case 'f': f_flag = optarg; break; @@ -329,62 +283,56 @@ main(int argc, char *argv[]) argc -= optind; argv += optind; - if (argc > 0) - { - static char realname[12]; - - if(strncmp(argv[0], _PATH_DEV, sizeof _PATH_DEV - 2) == 0) + if (argc == 0) { + disk = get_rootdisk(); + } else { + if (stat(argv[0], &sb) == 0) { + /* OK, full pathname given */ + disk = argv[0]; + } else if (errno == ENOENT) { + /* Try prepending "/dev" */ + asprintf(&disk, "%s%s", _PATH_DEV, argv[0]); + if (disk == NULL) + errx(1, "out of memory"); + } else { + /* other stat error, let it fail below */ disk = argv[0]; - else - { - snprintf(realname, 12, "%s%s", _PATH_DEV, argv[0]); - disk = realname; } - - if (open_disk(u_flag) < 0) - err(1, "cannot open disk %s", disk); } - else - { - int rv = 0; + if (open_disk(u_flag) < 0) + err(1, "cannot open disk %s", disk); - for(i = 0; disks[i]; i++) - { - disk = disks[i]; - rv = open_disk(u_flag); - if(rv != -2) break; - } - if(rv < 0) - err(1, "cannot open any disk"); - } - if (s_flag) - { - int i; - struct dos_partition *partp; +#ifndef PC98 + /* (abu)use mboot.bootinst to probe for the sector size */ + if ((mboot.bootinst = malloc(MAX_SEC_SIZE)) == NULL) + err(1, "cannot allocate buffer to determine disk sector size"); + read_disk(0, mboot.bootinst); + free(mboot.bootinst); + mboot.bootinst = NULL; +#endif + if (s_flag) { if (read_s0()) err(1, "read_s0"); printf("%s: %d cyl %d hd %d sec\n", disk, dos_cyls, dos_heads, dos_sectors); #ifdef PC98 printf("Part %11s %11s SID\n", "Start", "Size"); -#else - printf("Part %11s %11s Type Flags\n", "Start", "Size"); -#endif for (i = 0; i < NDOSPART; i++) { partp = ((struct dos_partition *) &mboot.parts) + i; -#ifdef PC98 if (partp->dp_sid == 0) -#else - if (partp->dp_start == 0 && partp->dp_size == 0) -#endif continue; printf("%4d: %11lu %11lu 0x%02x\n", i + 1, -#ifdef PC98 partp->dp_scyl * cylsecs, (partp->dp_ecyl - partp->dp_scyl + 1) * cylsecs, partp->dp_sid); #else + printf("Part %11s %11s Type Flags\n", "Start", "Size"); + for (i = 0; i < NDOSPART; i++) { + partp = ((struct dos_partition *) &mboot.parts) + i; + if (partp->dp_start == 0 && partp->dp_size == 0) + continue; + printf("%4d: %11lu %11lu 0x%02x 0x%02x\n", i + 1, (u_long) partp->dp_start, (u_long) partp->dp_size, partp->dp_typ, partp->dp_flag); @@ -396,63 +344,42 @@ main(int argc, char *argv[]) printf("******* Working on device %s *******\n",disk); #ifndef PC98 - if (I_flag) - { - struct dos_partition *partp; - + if (I_flag) { read_s0(); reset_boot(); partp = (struct dos_partition *) (&mboot.parts[0]); partp->dp_typ = DOSPTYP_386BSD; partp->dp_flag = ACTIVE; partp->dp_start = dos_sectors; - partp->dp_size = disksecs - dos_sectors; - - dos(partp->dp_start, partp->dp_size, - &partp->dp_scyl, &partp->dp_ssect, &partp->dp_shd); - dos(partp->dp_start + partp->dp_size - 1, partp->dp_size, - &partp->dp_ecyl, &partp->dp_esect, &partp->dp_ehd); + partp->dp_size = (disksecs / dos_cylsecs) * dos_cylsecs - + dos_sectors; + dos(partp); if (v_flag) print_s0(-1); - write_s0(); + if (!t_flag) + write_s0(); exit(0); } #endif - if (f_flag) - { + if (f_flag) { #ifndef PC98 if (read_s0() || i_flag) - { reset_boot(); - } - if (!read_config(f_flag)) - { exit(1); - } #endif if (v_flag) - { print_s0(-1); - } if (!t_flag) - { write_s0(); - } - } - else - { + } else { if(u_flag) - { get_params_to_use(); - } else - { print_params(); - } if (read_s0()) - init_sector0(1); + init_sector0(dos_sectors); printf("Media sector size is %d\n", secsize); printf("Warning: BIOS sector numbering starts with sector 1\n"); @@ -470,19 +397,15 @@ main(int argc, char *argv[]) change_code(); if (u_flag || a_flag || B_flag) { - if (!t_flag) - { + if (!t_flag) { printf("\nWe haven't changed the partition table yet. "); printf("This is your last chance.\n"); } print_s0(-1); - if (!t_flag) - { + if (!t_flag) { if (ok("Should we write new partition table?")) write_s0(); - } - else - { + } else { printf("\n-t flag specified -- partition table not written.\n"); } } @@ -495,7 +418,7 @@ static void usage() { fprintf(stderr, "%s%s", - "usage: fdisk [-Batu] [-b bootcode] [-12345678] [disk]\n", + "usage: fdisk [-Baistu] [-12345678] [disk]\n", " fdisk -f configfile [-itv] [disk]\n"); exit(1); } @@ -503,7 +426,7 @@ usage() static void print_s0(int which) { -int i; + int i; print_params(); printf("Information from DOS bootblock is:\n"); @@ -514,13 +437,13 @@ int i; print_part(which); } -static struct dos_partition mtpart = { 0 }; +static struct dos_partition mtpart; static void print_part(int i) { struct dos_partition *partp; - u_int64_t part_mb; + u_int64_t part_sz, part_mb; partp = ((struct dos_partition *) &mboot.parts) + i - 1; @@ -532,31 +455,34 @@ print_part(int i) * Be careful not to overflow. */ #ifdef PC98 - printf("sysmid %d,(%s)\n", partp->dp_mid, get_type(partp->dp_mid)); - printf(" start %d, size %d (%d Meg), sid %d\n", - partp->dp_scyl * cylsecs , - (partp->dp_ecyl - partp->dp_scyl + 1) * cylsecs, - (partp->dp_ecyl - partp->dp_scyl + 1) * cylsecs * 512 / (1024 * 1024), - partp->dp_sid); + part_sz = (partp->dp_ecyl - partp->dp_scyl + 1) * cylsecs; + part_mb = part_sz * secsize; + part_mb /= (1024 * 1024); + printf("sysmid %d (%#04x),(%s)\n", partp->dp_mid, partp->dp_mid, + get_type(partp->dp_mid)); + printf(" start %lu, size %lu (%ju Meg), sid %d\n", + (u_long)(partp->dp_scyl * cylsecs), (u_long)part_sz, + (uintmax_t)part_mb, partp->dp_sid); #else part_mb = partp->dp_size; part_mb *= secsize; part_mb /= (1024 * 1024); - printf("sysid %d,(%s)\n", partp->dp_typ, get_type(partp->dp_typ)); - printf(" start %lu, size %lu (%qd Meg), flag %x%s\n", + printf("sysid %d (%#04x),(%s)\n", partp->dp_typ, partp->dp_typ, + get_type(partp->dp_typ)); + printf(" start %lu, size %lu (%ju Meg), flag %x%s\n", (u_long)partp->dp_start, (u_long)partp->dp_size, - part_mb, + (uintmax_t)part_mb, partp->dp_flag, partp->dp_flag == ACTIVE ? " (active)" : ""); #endif - printf("\tbeg: cyl %d/ sector %d/ head %d;\n\tend: cyl %d/ sector %d/ head %d\n" + printf("\tbeg: cyl %d/ head %d/ sector %d;\n\tend: cyl %d/ head %d/ sector %d\n" ,partp->dp_scyl - ,partp->dp_ssect ,partp->dp_shd + ,partp->dp_ssect ,partp->dp_ecyl - ,partp->dp_esect - ,partp->dp_ehd); + ,partp->dp_ehd + ,partp->dp_esect); #ifdef PC98 printf ("\tsystem Name %.16s\n",partp->dp_name); #endif @@ -566,29 +492,42 @@ print_part(int i) static void init_boot(void) { -#ifndef PC98 +#ifdef PC98 + mboot.signature = BOOT_MAGIC; +#else const char *fname; - int fd; + int fdesc, n; + struct stat sb; fname = b_flag ? b_flag : "/boot/mbr"; - if ((fd = open(fname, O_RDONLY)) == -1 || - read(fd, mboot.bootinst, DOSPARTOFF) == -1 || - close(fd)) + if ((fdesc = open(fname, O_RDONLY)) == -1 || + fstat(fdesc, &sb) == -1) err(1, "%s", fname); + if ((mboot.bootinst_size = sb.st_size) % secsize != 0) + errx(1, "%s: length must be a multiple of sector size", fname); + if (mboot.bootinst != NULL) + free(mboot.bootinst); + if ((mboot.bootinst = malloc(mboot.bootinst_size = sb.st_size)) == NULL) + errx(1, "%s: unable to allocate read buffer", fname); + if ((n = read(fdesc, mboot.bootinst, mboot.bootinst_size)) == -1 || + close(fdesc)) + err(1, "%s", fname); + if (n != mboot.bootinst_size) + errx(1, "%s: short read", fname); #endif - mboot.signature = BOOT_MAGIC; } static void init_sector0(unsigned long start) { -struct dos_partition *partp = (struct dos_partition *) (&mboot.parts[3]); -unsigned long size = disksecs - start; +#ifdef PC98 + struct dos_partition *partp = + (struct dos_partition *)(&mboot.parts[3]); + unsigned long size = disksecs - start; init_boot(); -#ifdef PC98 partp->dp_mid = DOSMID_386BSD; partp->dp_sid = DOSSID_386BSD; @@ -596,24 +535,29 @@ unsigned long size = disksecs - start; partp->dp_ipl_cyl = partp->dp_scyl; partp->dp_ipl_sct = partp->dp_ssect; partp->dp_ipl_head = partp->dp_shd; - dos(start+size-cylsecs, size, &partp->dp_ecyl, &partp->dp_esect, &partp->dp_ehd); + dos(start+size-cylsecs, size, + &partp->dp_ecyl, &partp->dp_esect, &partp->dp_ehd); #else + struct dos_partition *partp = (struct dos_partition *) (&mboot.parts[3]); + + init_boot(); + partp->dp_typ = DOSPTYP_386BSD; partp->dp_flag = ACTIVE; + start = ((start + dos_sectors - 1) / dos_sectors) * dos_sectors; + if(start == 0) + start = dos_sectors; partp->dp_start = start; - partp->dp_size = size; + partp->dp_size = (disksecs / dos_cylsecs) * dos_cylsecs - start; - dos(partp->dp_start, partp->dp_size, - &partp->dp_scyl, &partp->dp_ssect, &partp->dp_shd); - dos(partp->dp_start + partp->dp_size - 1, partp->dp_size, - &partp->dp_ecyl, &partp->dp_esect, &partp->dp_ehd); + dos(partp); #endif } static void change_part(int i) { -struct dos_partition *partp = ((struct dos_partition *) &mboot.parts) + i - 1; + struct dos_partition *partp = ((struct dos_partition *) &mboot.parts) + i - 1; printf("The data for partition %d is:\n", i); print_part(i); @@ -643,7 +587,12 @@ struct dos_partition *partp = ((struct dos_partition *) &mboot.parts) + i - 1; Decimal("sysid (165=FreeBSD)", partp->dp_typ, tmp); Decimal("start", partp->dp_start, tmp); Decimal("size", partp->dp_size, tmp); + if (!sanitize_partition(partp)) { + warnx("ERROR: failed to adjust; setting sysid to 0"); + partp->dp_typ = 0; + } #endif + if (ok("Explicitly specify beg/end address ?")) { int tsec,tcyl,thd; @@ -653,13 +602,17 @@ struct dos_partition *partp = ((struct dos_partition *) &mboot.parts) + i - 1; Decimal("beginning cylinder", tcyl, tmp); Decimal("beginning head", thd, tmp); Decimal("beginning sector", tsec, tmp); - partp->dp_scyl = DOSCYL(tcyl); - partp->dp_ssect = DOSSECT(tsec,tcyl); - partp->dp_shd = thd; #ifdef PC98 + partp->dp_scyl = tcyl; + partp->dp_ssect = tsec; + partp->dp_shd = thd; partp->dp_ipl_cyl = partp->dp_scyl; partp->dp_ipl_sct = partp->dp_ssect; partp->dp_ipl_head = partp->dp_shd; +#else + partp->dp_scyl = DOSCYL(tcyl); + partp->dp_ssect = DOSSECT(tsec,tcyl); + partp->dp_shd = thd; #endif tcyl = partp->dp_ecyl; @@ -668,11 +621,17 @@ struct dos_partition *partp = ((struct dos_partition *) &mboot.parts) + i - 1; Decimal("ending cylinder", tcyl, tmp); Decimal("ending head", thd, tmp); Decimal("ending sector", tsec, tmp); +#ifdef PC98 + partp->dp_ecyl = tcyl; + partp->dp_esect = tsec; + partp->dp_ehd = thd; +#else partp->dp_ecyl = DOSCYL(tcyl); partp->dp_esect = DOSSECT(tsec,tcyl); partp->dp_ehd = thd; - } else { +#endif #ifdef PC98 + } else { dos(x_start, x_size, &partp->dp_scyl, &partp->dp_ssect, &partp->dp_shd); partp->dp_ipl_cyl = partp->dp_scyl; @@ -680,13 +639,11 @@ struct dos_partition *partp = ((struct dos_partition *) &mboot.parts) + i - 1; partp->dp_ipl_head = partp->dp_shd; dos(x_start+x_size - cylsecs, x_size, &partp->dp_ecyl, &partp->dp_esect, &partp->dp_ehd); -#else - dos(partp->dp_start, partp->dp_size, - &partp->dp_scyl, &partp->dp_ssect, &partp->dp_shd); - dos(partp->dp_start + partp->dp_size - 1, partp->dp_size, - &partp->dp_ecyl, &partp->dp_esect, &partp->dp_ehd); -#endif } +#else + } else + dos(partp); +#endif print_part(i); } while (!ok("Are we happy with this entry?")); @@ -711,44 +668,56 @@ print_params() static void change_active(int which) { -int i; #ifdef PC98 -int active = 8, tmp; + struct dos_partition *partp = ((struct dos_partition *) &mboot.parts); + int active, i, tmp; + + active = 8; #else -int active = 4, tmp; + struct dos_partition *partp = &mboot.parts[0]; + int active, i, new, tmp; + + active = -1; + for (i = 0; i < NDOSPART; i++) { + if ((partp[i].dp_flag & ACTIVE) == 0) + continue; + printf("Partition %d is marked active\n", i + 1); + if (active == -1) + active = i + 1; + } #endif - -struct dos_partition *partp = ((struct dos_partition *) &mboot.parts); - if (a_flag && which != -1) active = which; +#ifndef PC98 + else if (active == -1) + active = 1; +#endif + if (!ok("Do you want to change the active partition?")) return; setactive: #ifdef PC98 active = 4; -#else - active = 4; -#endif do { Decimal("active partition", active, tmp); -#ifdef PC98 if (active < 1 || 8 < active) { printf("Active partition number must be in range 1-8." " Try again.\n"); goto setactive; } + } while (!ok("Are you happy with this choice")); + partp[active].dp_sid |= ACTIVE; #else - if (active < 1 || 4 < active) { + do { + new = active; + Decimal("active partition", new, tmp); + if (new < 1 || new > 4) { printf("Active partition number must be in range 1-4." " Try again.\n"); goto setactive; } -#endif + active = new; } while (!ok("Are you happy with this choice")); -#ifdef PC98 - partp[active].dp_sid |= ACTIVE; -#else for (i = 0; i < NDOSPART; i++) partp[i].dp_flag = 0; if (active > 0 && active <= NDOSPART) @@ -761,7 +730,6 @@ change_code() { if (ok("Do you want to change the boot code?")) init_boot(); - } void @@ -787,18 +755,11 @@ get_params_to_use() /***********************************************\ * Change real numbers into strange dos numbers * \***********************************************/ -static void -dos(sec, size, c, s, h) -int sec, size; #ifdef PC98 -unsigned short *c; -unsigned char *s, *h; -#else -unsigned char *c, *s, *h; -#endif +static void +dos(int sec, int size, unsigned short *c, unsigned char *s, unsigned char *h) { -int cy; -int hd; + int cy, hd; if (sec == 0 && size == 0) { *s = *c = *h = 0; @@ -809,44 +770,72 @@ int hd; sec = sec - cy * ( dos_cylsecs ); hd = sec / dos_sectors; -#ifdef PC98 sec = (sec - hd * dos_sectors); *h = hd; *c = cy; *s = sec; -#else - sec = (sec - hd * dos_sectors) + 1; - - *h = hd; - *c = cy & 0xff; - *s = (sec & 0x3f) | ( (cy & 0x300) >> 2); -#endif } +#else +static void +dos(struct dos_partition *partp) +{ + int cy, sec; + u_int32_t end; -int fd; + if (partp->dp_typ == 0 && partp->dp_start == 0 && partp->dp_size == 0) { + memcpy(partp, &mtpart, sizeof(*partp)); + return; + } - /* Getting device status */ + /* Start c/h/s. */ + partp->dp_shd = partp->dp_start % dos_cylsecs / dos_sectors; + cy = partp->dp_start / dos_cylsecs; + sec = partp->dp_start % dos_sectors + 1; + partp->dp_scyl = DOSCYL(cy); + partp->dp_ssect = DOSSECT(sec, cy); + + /* End c/h/s. */ + end = partp->dp_start + partp->dp_size - 1; + partp->dp_ehd = end % dos_cylsecs / dos_sectors; + cy = end / dos_cylsecs; + sec = end % dos_sectors + 1; + partp->dp_ecyl = DOSCYL(cy); + partp->dp_esect = DOSSECT(sec, cy); +} +#endif static int -open_disk(int u_flag) +open_disk(int flag) { -struct stat st; + struct stat st; if (stat(disk, &st) == -1) { + if (errno == ENOENT) + return -2; warnx("can't get file status of %s", disk); return -1; } if ( !(st.st_mode & S_IFCHR) ) warnx("device %s is not character special", disk); +#ifdef PC98 if ((fd = open(disk, - a_flag || I_flag || B_flag || u_flag ? O_RDWR : O_RDONLY)) == -1) { + a_flag || B_flag || flag ? O_RDWR : O_RDONLY)) == -1) { if(errno == ENXIO) return -2; warnx("can't open device %s", disk); return -1; } - if (get_params(0) == -1) { +#else + if ((fd = open(disk, + a_flag || I_flag || B_flag || flag ? O_RDWR : O_RDONLY)) == -1) { + if(errno == ENXIO) + return -2; + warnx("can't open device %s", disk); + return -1; + } +#endif + if (get_params() == -1) { warnx("can't get disk parameters on %s", disk); return -1; } @@ -858,7 +847,8 @@ read_disk(off_t sector, void *buf) { lseek(fd,(sector * 512), 0); #ifdef PC98 - return read(fd, buf, secsize > MIN_SEC_SIZE ? secsize : MIN_SEC_SIZE * 2); + return read(fd, buf, + secsize > MIN_SEC_SIZE ? secsize : MIN_SEC_SIZE * 2); #else if( secsize == 0 ) for( secsize = MIN_SEC_SIZE; secsize <= MAX_SEC_SIZE; secsize *= 2 ) @@ -883,7 +873,8 @@ write_disk(off_t sector, void *buf) lseek(fd,(sector * 512), 0); /* write out in the size that the read_disk found worked */ #ifdef PC98 - return write(fd, buf, secsize > MIN_SEC_SIZE ? secsize : MIN_SEC_SIZE * 2); + return write(fd, buf, + secsize > MIN_SEC_SIZE ? secsize : MIN_SEC_SIZE * 2); #else return write(fd, buf, secsize); #endif @@ -892,35 +883,41 @@ write_disk(off_t sector, void *buf) static int get_params() { + int error; + u_int u; + off_t o; + + error = ioctl(fd, DIOCGFWSECTORS, &u); + if (error == 0) + sectors = dos_sectors = u; + error = ioctl(fd, DIOCGFWHEADS, &u); + if (error == 0) + heads = dos_heads = u; - if (ioctl(fd, DIOCGDINFO, &disklabel) == -1) { - warnx("can't get disk parameters on %s; supplying dummy ones", disk); - dos_cyls = cyls = 1; - dos_heads = heads = 1; - dos_sectors = sectors = 1; dos_cylsecs = cylsecs = heads * sectors; disksecs = cyls * heads * sectors; -#ifdef PC98 - secsize = disklabel.d_secsize; -#endif - return disksecs; - } - dos_cyls = cyls = disklabel.d_ncylinders; - dos_heads = heads = disklabel.d_ntracks; - dos_sectors = sectors = disklabel.d_nsectors; - dos_cylsecs = cylsecs = heads * sectors; - disksecs = cyls * heads * sectors; + error = ioctl(fd, DIOCGSECTORSIZE, &u); + if (error != 0) + u = 512; #ifdef PC98 - secsize = disklabel.d_secsize; + secsize = u; #endif - return (disksecs); + + error = ioctl(fd, DIOCGMEDIASIZE, &o); + if (error == 0) { + disksecs = o / u; + cyls = dos_cyls = o / (u * dos_heads * dos_sectors); + } + + return (disksecs); } static int read_s0() { +#ifdef PC98 if (read_disk(0, (char *) mboot.bootinst) == -1) { warnx("can't read fdisk partition table"); return -1; @@ -930,48 +927,73 @@ read_s0() /* So should we initialize things */ return -1; } +#else + mboot.bootinst_size = secsize; + if (mboot.bootinst != NULL) + free(mboot.bootinst); + if ((mboot.bootinst = malloc(mboot.bootinst_size)) == NULL) { + warnx("unable to allocate buffer to read fdisk " + "partition table"); + return -1; + } + if (read_disk(0, mboot.bootinst) == -1) { + warnx("can't read fdisk partition table"); + return -1; + } + if (*(uint16_t *)(void *)&mboot.bootinst[MBRSIGOFF] != BOOT_MAGIC) { + warnx("invalid fdisk partition table found"); + /* So should we initialize things */ + return -1; + } + memcpy(mboot.parts, &mboot.bootinst[DOSPARTOFF], sizeof(mboot.parts)); +#endif return 0; } static int write_s0() { -#ifdef NOT_NOW - int flag; +#ifndef PC98 + int sector; #endif + if (iotest) { print_s0(-1); return 0; } +#ifndef PC98 + memcpy(&mboot.bootinst[DOSPARTOFF], mboot.parts, sizeof(mboot.parts)); +#endif /* * write enable label sector before write (if necessary), * disable after writing. * needed if the disklabel protected area also protects * sector 0. (e.g. empty disk) */ -#ifdef NOT_NOW - flag = 1; - if (ioctl(fd, DIOCWLABEL, &flag) < 0) - warn("ioctl DIOCWLABEL"); -#endif +#ifdef PC98 if (write_disk(0, (char *) mboot.bootinst) == -1) { warn("can't write fdisk partition table"); return -1; -#ifdef NOT_NOW - flag = 0; - (void) ioctl(fd, DIOCWLABEL, &flag); -#endif } +#else + for(sector = 0; sector < mboot.bootinst_size / secsize; sector++) + if (write_disk(sector, + &mboot.bootinst[sector * secsize]) == -1) { + warn("can't write fdisk partition table"); + return -1; + } +#endif return(0); } static int -ok(str) -char *str; +ok(const char *str) { printf("%s [n] ", str); - fgets(lbuf, LBUF, stdin); + fflush(stdout); + if (fgets(lbuf, LBUF, stdin) == NULL) + exit(1); lbuf[strlen(lbuf)-1] = 0; if (*lbuf && @@ -983,14 +1005,16 @@ char *str; } static int -decimal(char *str, int *num, int deflt) +decimal(const char *str, int *num, int deflt) { -int acc = 0, c; -char *cp; + int acc = 0, c; + char *cp; while (1) { printf("Supply a decimal value for \"%s\" [%d] ", str, deflt); - fgets(lbuf, LBUF, stdin); + fflush(stdout); + if (fgets(lbuf, LBUF, stdin) == NULL) + exit(1); lbuf[strlen(lbuf)-1] = 0; if (!*lbuf) @@ -1018,57 +1042,12 @@ char *cp; } -#if 0 -static int -hex(char *str, int *num, int deflt) -{ -int acc = 0, c; -char *cp; - - while (1) { - printf("Supply a hex value for \"%s\" [%x] ", str, deflt); - fgets(lbuf, LBUF, stdin); - lbuf[strlen(lbuf)-1] = 0; - - if (!*lbuf) - return 0; - - cp = lbuf; - while ((c = *cp) && (c == ' ' || c == '\t')) cp++; - if (!c) - return 0; - while ((c = *cp++)) { - if (c <= '9' && c >= '0') - acc = (acc << 4) + c - '0'; - else if (c <= 'f' && c >= 'a') - acc = (acc << 4) + c - 'a' + 10; - else if (c <= 'F' && c >= 'A') - acc = (acc << 4) + c - 'A' + 10; - else - break; - } - if (c == ' ' || c == '\t') - while ((c = *cp) && (c == ' ' || c == '\t')) cp++; - if (!c) { - *num = acc; - return 1; - } else - printf("%s is an invalid hex number. Try again.\n", - lbuf); - } - -} -#endif - #ifdef PC98 static int string(char *str, char **ans) { -#ifdef PC98 -int i; -#endif -int c; -char *cp = lbuf; + int i, c; + char *cp = lbuf; while (1) { printf("Supply a string value for \"%s\" [%s] ", str, *ans); @@ -1088,20 +1067,16 @@ char *cp = lbuf; while ((c = *cp) && c != ' ' && c != '\t') cp++; } -#ifdef PC98 for (i = strlen(*ans); i < 16; i++) (*ans)[i] = ' '; (*ans)[16] = 0; -#else - if (c) - *cp = 0; -#endif + return 1; } } #endif -static char * +static const char * get_type(int type) { int numentries = (sizeof(part_types)/sizeof(struct part_type)); @@ -1109,16 +1084,14 @@ get_type(int type) struct part_type *ptr = part_types; - while(counter < numentries) - { + while(counter < numentries) { #ifdef PC98 if(ptr->type == (type & 0x7f)) + return(ptr->name); #else if(ptr->type == type) -#endif - { return(ptr->name); - } +#endif ptr++; counter++; } @@ -1126,416 +1099,111 @@ get_type(int type) } #ifndef PC98 -static void -parse_config_line(line, command) - char *line; - CMD *command; -{ - char *cp, *end; - - cp = line; - while (1) /* dirty trick used to insure one exit point for this - function */ - { - memset(command, 0, sizeof(*command)); - - while (isspace(*cp)) ++cp; - if (*cp == '\0' || *cp == '#') - { - break; - } - command->cmd = *cp++; - - /* - * Parse args - */ - while (1) - { - while (isspace(*cp)) ++cp; - if (*cp == '#') - { - break; /* found comment */ - } - if (isalpha(*cp)) - { - command->args[command->n_args].argtype = *cp++; - } - if (!isdigit(*cp)) - { - break; /* assume end of line */ - } - end = NULL; - command->args[command->n_args].arg_val = strtol(cp, &end, 0); - if (cp == end) - { - break; /* couldn't parse number */ - } - cp = end; - command->n_args++; - } - break; - } -} - - static int -process_geometry(command) - CMD *command; +sanitize_partition(struct dos_partition *partp) { - int status = 1, i; + u_int32_t prev_head_boundary, prev_cyl_boundary; + u_int32_t max_end, size, start; - while (1) - { - geom_processed = 1; - if (part_processed) - { + start = partp->dp_start; + size = partp->dp_size; + max_end = start + size; + /* Only allow a zero size if the partition is being marked unused. */ + if (size == 0) { + if (start == 0 && partp->dp_typ == 0) + return (1); + warnx("ERROR: size of partition is zero"); + return (0); + } + /* Return if no adjustment is necessary. */ + if (start % dos_sectors == 0 && (start + size) % dos_sectors == 0) + return (1); + + if (start % dos_sectors != 0) + warnx("WARNING: partition does not start on a head boundary"); + if ((start +size) % dos_sectors != 0) + warnx("WARNING: partition does not end on a cylinder boundary"); + warnx("WARNING: this may confuse the BIOS or some operating systems"); + if (!ok("Correct this automatically?")) + return (1); + + /* + * Adjust start upwards, if necessary, to fall on an head boundary. + */ + if (start % dos_sectors != 0) { + prev_head_boundary = start / dos_sectors * dos_sectors; + if (max_end < dos_sectors || + prev_head_boundary >= max_end - dos_sectors) { + /* + * Can't go past end of partition + */ warnx( - "ERROR line %d: the geometry specification line must occur before\n\ - all partition specifications", - current_line_number); - status = 0; - break; - } - if (command->n_args != 3) - { - warnx("ERROR line %d: incorrect number of geometry args", - current_line_number); - status = 0; - break; - } - dos_cyls = -1; - dos_heads = -1; - dos_sectors = -1; - for (i = 0; i < 3; ++i) - { - switch (command->args[i].argtype) - { - case 'c': - dos_cyls = command->args[i].arg_val; - break; - case 'h': - dos_heads = command->args[i].arg_val; - break; - case 's': - dos_sectors = command->args[i].arg_val; - break; - default: - warnx( - "ERROR line %d: unknown geometry arg type: '%c' (0x%02x)", - current_line_number, command->args[i].argtype, - command->args[i].argtype); - status = 0; - break; - } - } - if (status == 0) - { - break; - } - - dos_cylsecs = dos_heads * dos_sectors; - - /* - * Do sanity checks on parameter values - */ - if (dos_cyls < 0) - { - warnx("ERROR line %d: number of cylinders not specified", - current_line_number); - status = 0; - } - if (dos_cyls == 0 || dos_cyls > 1024) - { - warnx( - "WARNING line %d: number of cylinders (%d) may be out-of-range\n\ - (must be within 1-1024 for normal BIOS operation, unless the entire disk\n\ - is dedicated to FreeBSD)", - current_line_number, dos_cyls); - } - - if (dos_heads < 0) - { - warnx("ERROR line %d: number of heads not specified", - current_line_number); - status = 0; - } - else if (dos_heads < 1 || dos_heads > 256) - { - warnx("ERROR line %d: number of heads must be within (1-256)", - current_line_number); - status = 0; - } - - if (dos_sectors < 0) - { - warnx("ERROR line %d: number of sectors not specified", - current_line_number); - status = 0; - } - else if (dos_sectors < 1 || dos_sectors > 63) - { - warnx("ERROR line %d: number of sectors must be within (1-63)", - current_line_number); - status = 0; - } - - break; + "ERROR: unable to adjust start of partition to fall on a head boundary"); + return (0); + } + start = prev_head_boundary + dos_sectors; } - return (status); + + /* + * Adjust size downwards, if necessary, to fall on a cylinder + * boundary. + */ + prev_cyl_boundary = ((start + size) / dos_cylsecs) * dos_cylsecs; + if (prev_cyl_boundary > start) + size = prev_cyl_boundary - start; + else { + warnx("ERROR: could not adjust partition to start on a head boundary\n\ + and end on a cylinder boundary."); + return (0); + } + + /* Finally, commit any changes to partp and return. */ + if (start != partp->dp_start) { + warnx("WARNING: adjusting start offset of partition to %u", + (u_int)start); + partp->dp_start = start; + } + if (size != partp->dp_size) { + warnx("WARNING: adjusting size of partition to %u", (u_int)size); + partp->dp_size = size; + } + + return (1); } +#endif /* PC98 */ - -static int -process_partition(command) - CMD *command; +/* + * Try figuring out the root device's canonical disk name. + * The following choices are considered: + * /dev/ad0s1a => /dev/ad0 + * /dev/da0a => /dev/da0 + * /dev/vinum/root => /dev/vinum/root + */ +static char * +get_rootdisk(void) { - int status = 0, partition; - unsigned long chunks, adj_size, max_end; - struct dos_partition *partp; + struct statfs rootfs; + regex_t re; +#define NMATCHES 2 + regmatch_t rm[NMATCHES]; + char *s; + int rv; - while (1) - { - part_processed = 1; - if (command->n_args != 4) - { - warnx("ERROR line %d: incorrect number of partition args", - current_line_number); - break; - } - partition = command->args[0].arg_val; - if (partition < 1 || partition > 4) - { - warnx("ERROR line %d: invalid partition number %d", - current_line_number, partition); - break; - } - partp = ((struct dos_partition *) &mboot.parts) + partition - 1; - bzero((char *)partp, sizeof (struct dos_partition)); - partp->dp_typ = command->args[1].arg_val; - partp->dp_start = command->args[2].arg_val; - partp->dp_size = command->args[3].arg_val; - max_end = partp->dp_start + partp->dp_size; + if (statfs("/", &rootfs) == -1) + err(1, "statfs(\"/\")"); - if (partp->dp_typ == 0) - { - /* - * Get out, the partition is marked as unused. - */ - /* - * Insure that it's unused. - */ - bzero((char *)partp, sizeof (struct dos_partition)); - status = 1; - break; - } + if ((rv = regcomp(&re, "^(/dev/[a-z]+[0-9]+)([sp][0-9]+)?[a-h]?$", + REG_EXTENDED)) != 0) + errx(1, "regcomp() failed (%d)", rv); + if ((rv = regexec(&re, rootfs.f_mntfromname, NMATCHES, rm, 0)) != 0) + errx(1, +"mounted root fs resource doesn't match expectations (regexec returned %d)", + rv); + if ((s = malloc(rm[1].rm_eo - rm[1].rm_so + 1)) == NULL) + errx(1, "out of memory"); + memcpy(s, rootfs.f_mntfromname + rm[1].rm_so, + rm[1].rm_eo - rm[1].rm_so); + s[rm[1].rm_eo - rm[1].rm_so] = 0; - /* - * Adjust start upwards, if necessary, to fall on an head boundary. - */ - if (partp->dp_start % dos_sectors != 0) - { - adj_size = - (partp->dp_start / dos_sectors + 1) * dos_sectors; - if (adj_size > max_end) - { - /* - * Can't go past end of partition - */ - warnx( - "ERROR line %d: unable to adjust start of partition %d to fall on\n\ - a cylinder boundary", - current_line_number, partition); - break; - } - warnx( - "WARNING: adjusting start offset of partition '%d' from %lu\n\ - to %lu, to round to an head boundary", - partition, (u_long)partp->dp_start, adj_size); - partp->dp_start = adj_size; - } - - /* - * Adjust size downwards, if necessary, to fall on a cylinder - * boundary. - */ - chunks = - ((partp->dp_start + partp->dp_size) / dos_cylsecs) * dos_cylsecs; - adj_size = chunks - partp->dp_start; - if (adj_size != partp->dp_size) - { - warnx( - "WARNING: adjusting size of partition '%d' from %lu to %lu,\n\ - to round to a cylinder boundary", - partition, (u_long)partp->dp_size, adj_size); - if (chunks > 0) - { - partp->dp_size = adj_size; - } - else - { - partp->dp_size = 0; - } - } - if (partp->dp_size < 1) - { - warnx("ERROR line %d: size for partition '%d' is zero", - current_line_number, partition); - break; - } - - dos(partp->dp_start, partp->dp_size, - &partp->dp_scyl, &partp->dp_ssect, &partp->dp_shd); - dos(partp->dp_start+partp->dp_size - 1, partp->dp_size, - &partp->dp_ecyl, &partp->dp_esect, &partp->dp_ehd); - status = 1; - break; - } - return (status); + return s; } - - -static int -process_active(command) - CMD *command; -{ - int status = 0, partition, i; - struct dos_partition *partp; - - while (1) - { - active_processed = 1; - if (command->n_args != 1) - { - warnx("ERROR line %d: incorrect number of active args", - current_line_number); - status = 0; - break; - } - partition = command->args[0].arg_val; - if (partition < 1 || partition > 4) - { - warnx("ERROR line %d: invalid partition number %d", - current_line_number, partition); - break; - } - /* - * Reset active partition - */ - partp = ((struct dos_partition *) &mboot.parts); - for (i = 0; i < NDOSPART; i++) - partp[i].dp_flag = 0; - partp[partition-1].dp_flag = ACTIVE; - - status = 1; - break; - } - return (status); -} - - -static int -process_line(line) - char *line; -{ - CMD command; - int status = 1; - - while (1) - { - parse_config_line(line, &command); - switch (command.cmd) - { - case 0: - /* - * Comment or blank line - */ - break; - case 'g': - /* - * Set geometry - */ - status = process_geometry(&command); - break; - case 'p': - status = process_partition(&command); - break; - case 'a': - status = process_active(&command); - break; - default: - status = 0; - break; - } - break; - } - return (status); -} - - -static int -read_config(config_file) - char *config_file; -{ - FILE *fp = NULL; - int status = 1; - char buf[1010]; - - while (1) /* dirty trick used to insure one exit point for this - function */ - { - if (strcmp(config_file, "-") != 0) - { - /* - * We're not reading from stdin - */ - if ((fp = fopen(config_file, "r")) == NULL) - { - status = 0; - break; - } - } - else - { - fp = stdin; - } - current_line_number = 0; - while (!feof(fp)) - { - if (fgets(buf, sizeof(buf), fp) == NULL) - { - break; - } - ++current_line_number; - status = process_line(buf); - if (status == 0) - { - break; - } - } - break; - } - if (fp) - { - /* - * It doesn't matter if we're reading from stdin, as we've reached EOF - */ - fclose(fp); - } - return (status); -} - - -static void -reset_boot(void) -{ - int i; - struct dos_partition *partp; - - init_boot(); - for (i = 0; i < 4; ++i) - { - partp = ((struct dos_partition *) &mboot.parts) + i; - bzero((char *)partp, sizeof (struct dos_partition)); - } -} -#endif