diff options
Diffstat (limited to 'toolbox/newfs_msdos.c')
| -rw-r--r-- | toolbox/newfs_msdos.c | 1329 |
1 files changed, 669 insertions, 660 deletions
diff --git a/toolbox/newfs_msdos.c b/toolbox/newfs_msdos.c index 30b9f77..f69987c 100644 --- a/toolbox/newfs_msdos.c +++ b/toolbox/newfs_msdos.c @@ -27,20 +27,20 @@ #ifndef lint static const char rcsid[] = - "$FreeBSD: src/sbin/newfs_msdos/newfs_msdos.c,v 1.33 2009/04/11 14:56:29 ed Exp $"; + "$FreeBSD: src/sbin/newfs_msdos/newfs_msdos.c,v 1.33 2009/04/11 14:56:29 ed Exp $"; #endif /* not lint */ #include <sys/param.h> #ifndef ANDROID - #include <sys/fdcio.h> - #include <sys/disk.h> - #include <sys/disklabel.h> - #include <sys/mount.h> +#include <sys/fdcio.h> +#include <sys/disk.h> +#include <sys/disklabel.h> +#include <sys/mount.h> #else - #include <stdarg.h> - #include <linux/fs.h> - #include <linux/hdreg.h> +#include <stdarg.h> +#include <linux/fs.h> +#include <linux/hdreg.h> #endif #include <sys/stat.h> @@ -58,44 +58,44 @@ static const char rcsid[] = #include <time.h> #include <unistd.h> -#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */ -#define BPN 4 /* bits per nibble */ -#define NPB 2 /* nibbles per byte */ - -#define DOSMAGIC 0xaa55 /* DOS magic number */ -#define MINBPS 512 /* minimum bytes per sector */ -#define MAXSPC 128 /* maximum sectors per cluster */ -#define MAXNFT 16 /* maximum number of FATs */ -#define DEFBLK 4096 /* default block size */ -#define DEFBLK16 2048 /* default block size FAT16 */ -#define DEFRDE 512 /* default root directory entries */ -#define RESFTE 2 /* reserved FAT entries */ -#define MINCLS12 1 /* minimum FAT12 clusters */ -#define MINCLS16 0x1000 /* minimum FAT16 clusters */ -#define MINCLS32 2 /* minimum FAT32 clusters */ -#define MAXCLS12 0xfed /* maximum FAT12 clusters */ -#define MAXCLS16 0xfff5 /* maximum FAT16 clusters */ -#define MAXCLS32 0xffffff5 /* maximum FAT32 clusters */ - -#define mincls(fat) ((fat) == 12 ? MINCLS12 : \ - (fat) == 16 ? MINCLS16 : \ - MINCLS32) - -#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \ - (fat) == 16 ? MAXCLS16 : \ - MAXCLS32) - -#define mk1(p, x) \ +#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */ +#define BPN 4 /* bits per nibble */ +#define NPB 2 /* nibbles per byte */ + +#define DOSMAGIC 0xaa55 /* DOS magic number */ +#define MINBPS 512 /* minimum bytes per sector */ +#define MAXSPC 128 /* maximum sectors per cluster */ +#define MAXNFT 16 /* maximum number of FATs */ +#define DEFBLK 4096 /* default block size */ +#define DEFBLK16 2048 /* default block size FAT16 */ +#define DEFRDE 512 /* default root directory entries */ +#define RESFTE 2 /* reserved FAT entries */ +#define MINCLS12 1 /* minimum FAT12 clusters */ +#define MINCLS16 0x1000 /* minimum FAT16 clusters */ +#define MINCLS32 2 /* minimum FAT32 clusters */ +#define MAXCLS12 0xfed /* maximum FAT12 clusters */ +#define MAXCLS16 0xfff5 /* maximum FAT16 clusters */ +#define MAXCLS32 0xffffff5 /* maximum FAT32 clusters */ + +#define mincls(fat) ((fat) == 12 ? MINCLS12 : \ + (fat) == 16 ? MINCLS16 : \ + MINCLS32) + +#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \ + (fat) == 16 ? MAXCLS16 : \ + MAXCLS32) + +#define mk1(p, x) \ (p) = (u_int8_t)(x) -#define mk2(p, x) \ - (p)[0] = (u_int8_t)(x), \ +#define mk2(p, x) \ + (p)[0] = (u_int8_t)(x), \ (p)[1] = (u_int8_t)((x) >> 010) -#define mk4(p, x) \ - (p)[0] = (u_int8_t)(x), \ - (p)[1] = (u_int8_t)((x) >> 010), \ - (p)[2] = (u_int8_t)((x) >> 020), \ +#define mk4(p, x) \ + (p)[0] = (u_int8_t)(x), \ + (p)[1] = (u_int8_t)((x) >> 010), \ + (p)[2] = (u_int8_t)((x) >> 020), \ (p)[3] = (u_int8_t)((x) >> 030) #define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg) @@ -104,71 +104,71 @@ static const char rcsid[] = #define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg) struct bs { - u_int8_t jmp[3]; /* bootstrap entry point */ - u_int8_t oem[8]; /* OEM name and version */ + u_int8_t jmp[3]; /* bootstrap entry point */ + u_int8_t oem[8]; /* OEM name and version */ }; struct bsbpb { - u_int8_t bps[2]; /* bytes per sector */ - u_int8_t spc; /* sectors per cluster */ - u_int8_t res[2]; /* reserved sectors */ - u_int8_t nft; /* number of FATs */ - u_int8_t rde[2]; /* root directory entries */ - u_int8_t sec[2]; /* total sectors */ - u_int8_t mid; /* media descriptor */ - u_int8_t spf[2]; /* sectors per FAT */ - u_int8_t spt[2]; /* sectors per track */ - u_int8_t hds[2]; /* drive heads */ - u_int8_t hid[4]; /* hidden sectors */ - u_int8_t bsec[4]; /* big total sectors */ + u_int8_t bps[2]; /* bytes per sector */ + u_int8_t spc; /* sectors per cluster */ + u_int8_t res[2]; /* reserved sectors */ + u_int8_t nft; /* number of FATs */ + u_int8_t rde[2]; /* root directory entries */ + u_int8_t sec[2]; /* total sectors */ + u_int8_t mid; /* media descriptor */ + u_int8_t spf[2]; /* sectors per FAT */ + u_int8_t spt[2]; /* sectors per track */ + u_int8_t hds[2]; /* drive heads */ + u_int8_t hid[4]; /* hidden sectors */ + u_int8_t bsec[4]; /* big total sectors */ }; struct bsxbpb { - u_int8_t bspf[4]; /* big sectors per FAT */ - u_int8_t xflg[2]; /* FAT control flags */ - u_int8_t vers[2]; /* file system version */ - u_int8_t rdcl[4]; /* root directory start cluster */ - u_int8_t infs[2]; /* file system info sector */ - u_int8_t bkbs[2]; /* backup boot sector */ - u_int8_t rsvd[12]; /* reserved */ + u_int8_t bspf[4]; /* big sectors per FAT */ + u_int8_t xflg[2]; /* FAT control flags */ + u_int8_t vers[2]; /* file system version */ + u_int8_t rdcl[4]; /* root directory start cluster */ + u_int8_t infs[2]; /* file system info sector */ + u_int8_t bkbs[2]; /* backup boot sector */ + u_int8_t rsvd[12]; /* reserved */ }; struct bsx { - u_int8_t drv; /* drive number */ - u_int8_t rsvd; /* reserved */ - u_int8_t sig; /* extended boot signature */ - u_int8_t volid[4]; /* volume ID number */ - u_int8_t label[11]; /* volume label */ - u_int8_t type[8]; /* file system type */ + u_int8_t drv; /* drive number */ + u_int8_t rsvd; /* reserved */ + u_int8_t sig; /* extended boot signature */ + u_int8_t volid[4]; /* volume ID number */ + u_int8_t label[11]; /* volume label */ + u_int8_t type[8]; /* file system type */ }; struct de { - u_int8_t namext[11]; /* name and extension */ - u_int8_t attr; /* attributes */ - u_int8_t rsvd[10]; /* reserved */ - u_int8_t time[2]; /* creation time */ - u_int8_t date[2]; /* creation date */ - u_int8_t clus[2]; /* starting cluster */ - u_int8_t size[4]; /* size */ + u_int8_t namext[11]; /* name and extension */ + u_int8_t attr; /* attributes */ + u_int8_t rsvd[10]; /* reserved */ + u_int8_t time[2]; /* creation time */ + u_int8_t date[2]; /* creation date */ + u_int8_t clus[2]; /* starting cluster */ + u_int8_t size[4]; /* size */ }; struct bpb { - u_int bps; /* bytes per sector */ - u_int spc; /* sectors per cluster */ - u_int res; /* reserved sectors */ - u_int nft; /* number of FATs */ - u_int rde; /* root directory entries */ - u_int sec; /* total sectors */ - u_int mid; /* media descriptor */ - u_int spf; /* sectors per FAT */ - u_int spt; /* sectors per track */ - u_int hds; /* drive heads */ - u_int hid; /* hidden sectors */ - u_int bsec; /* big total sectors */ - u_int bspf; /* big sectors per FAT */ - u_int rdcl; /* root directory start cluster */ - u_int infs; /* file system info sector */ - u_int bkbs; /* backup boot sector */ + u_int bps; /* bytes per sector */ + u_int spc; /* sectors per cluster */ + u_int res; /* reserved sectors */ + u_int nft; /* number of FATs */ + u_int rde; /* root directory entries */ + u_int sec; /* total sectors */ + u_int mid; /* media descriptor */ + u_int spf; /* sectors per FAT */ + u_int spt; /* sectors per track */ + u_int hds; /* drive heads */ + u_int hid; /* hidden sectors */ + u_int bsec; /* big total sectors */ + u_int bspf; /* big sectors per FAT */ + u_int rdcl; /* root directory start cluster */ + u_int infs; /* file system info sector */ + u_int bkbs; /* backup boot sector */ }; #define BPBGAP 0, 0, 0, 0, 0, 0 @@ -181,35 +181,35 @@ static struct { {"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1, BPBGAP}}, {"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2, BPBGAP}}, {"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2, BPBGAP}}, - {"640", {512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2, BPBGAP}}, + {"640", {512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2, BPBGAP}}, {"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2, BPBGAP}}, {"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2, BPBGAP}}, - {"1232", {1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2, BPBGAP}}, + {"1232", {1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2, BPBGAP}}, {"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2, BPBGAP}}, {"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2, BPBGAP}} }; static const u_int8_t bootcode[] = { - 0xfa, /* cli */ - 0x31, 0xc0, /* xor ax,ax */ - 0x8e, 0xd0, /* mov ss,ax */ - 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ - 0xfb, /* sti */ - 0x8e, 0xd8, /* mov ds,ax */ - 0xe8, 0x00, 0x00, /* call $ + 3 */ - 0x5e, /* pop si */ - 0x83, 0xc6, 0x19, /* add si,+19h */ - 0xbb, 0x07, 0x00, /* mov bx,0007h */ - 0xfc, /* cld */ - 0xac, /* lodsb */ - 0x84, 0xc0, /* test al,al */ - 0x74, 0x06, /* jz $ + 8 */ - 0xb4, 0x0e, /* mov ah,0eh */ - 0xcd, 0x10, /* int 10h */ - 0xeb, 0xf5, /* jmp $ - 9 */ - 0x30, 0xe4, /* xor ah,ah */ - 0xcd, 0x16, /* int 16h */ - 0xcd, 0x19, /* int 19h */ + 0xfa, /* cli */ + 0x31, 0xc0, /* xor ax,ax */ + 0x8e, 0xd0, /* mov ss,ax */ + 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ + 0xfb, /* sti */ + 0x8e, 0xd8, /* mov ds,ax */ + 0xe8, 0x00, 0x00, /* call $ + 3 */ + 0x5e, /* pop si */ + 0x83, 0xc6, 0x19, /* add si,+19h */ + 0xbb, 0x07, 0x00, /* mov bx,0007h */ + 0xfc, /* cld */ + 0xac, /* lodsb */ + 0x84, 0xc0, /* test al,al */ + 0x74, 0x06, /* jz $ + 8 */ + 0xb4, 0x0e, /* mov ah,0eh */ + 0xcd, 0x10, /* int 10h */ + 0xeb, 0xf5, /* jmp $ - 9 */ + 0x30, 0xe4, /* xor ah,ah */ + 0xcd, 0x16, /* int 16h */ + 0xcd, 0x19, /* int 19h */ 0x0d, 0x0a, 'N', 'o', 'n', '-', 's', 'y', 's', 't', 'e', 'm', ' ', 'd', 'i', 's', 'k', @@ -223,8 +223,7 @@ static const u_int8_t bootcode[] = { static void check_mounted(const char *, mode_t); static void getstdfmt(const char *, struct bpb *); -static void getdiskinfo(int, const char *, const char *, int, - struct bpb *); +static void getdiskinfo(int, const char *, const char *, int, struct bpb *); static void print_bpb(struct bpb *); static u_int ckgeom(const char *, u_int, const char *); static u_int argtou(const char *, u_int, u_int, const char *); @@ -237,14 +236,14 @@ static void usage(void); /* * Construct a FAT12, FAT16, or FAT32 file system. */ -int -newfs_msdos_main(int argc, char *argv[]) +int newfs_msdos_main(int argc, char *argv[]) { - static const char opts[] = "@:NB:C:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:"; + static const char opts[] = "@:NAB:C:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:"; const char *opt_B = NULL, *opt_L = NULL, *opt_O = NULL, *opt_f = NULL; u_int opt_F = 0, opt_I = 0, opt_S = 0, opt_a = 0, opt_b = 0, opt_c = 0; u_int opt_e = 0, opt_h = 0, opt_i = 0, opt_k = 0, opt_m = 0, opt_n = 0; u_int opt_o = 0, opt_r = 0, opt_s = 0, opt_u = 0; + u_int opt_A = 0; int opt_N = 0; int Iflag = 0, mflag = 0, oflag = 0; char buf[MAXPATHLEN]; @@ -262,462 +261,484 @@ newfs_msdos_main(int argc, char *argv[]) ssize_t n; time_t now; u_int fat, bss, rds, cls, dir, lsn, x, x1, x2; + u_int extra_res, alignment=0, set_res, set_spf, set_spc, tempx, attempts=0; int ch, fd, fd1; off_t opt_create = 0, opt_ofs = 0; while ((ch = getopt(argc, argv, opts)) != -1) - switch (ch) { - case '@': - opt_ofs = argtooff(optarg, "offset"); - break; - case 'N': - opt_N = 1; - break; - case 'B': - opt_B = optarg; - break; - case 'C': - opt_create = argtooff(optarg, "create size"); - break; - case 'F': - if (strcmp(optarg, "12") && - strcmp(optarg, "16") && - strcmp(optarg, "32")) - errx(1, "%s: bad FAT type", optarg); - opt_F = atoi(optarg); - break; - case 'I': - opt_I = argto4(optarg, 0, "volume ID"); - Iflag = 1; - break; - case 'L': - if (!oklabel(optarg)) - errx(1, "%s: bad volume label", optarg); - opt_L = optarg; - break; - case 'O': - if (strlen(optarg) > 8) - errx(1, "%s: bad OEM string", optarg); - opt_O = optarg; - break; - case 'S': - opt_S = argto2(optarg, 1, "bytes/sector"); - break; - case 'a': - opt_a = argto4(optarg, 1, "sectors/FAT"); - break; - case 'b': - opt_b = argtox(optarg, 1, "block size"); - opt_c = 0; - break; - case 'c': - opt_c = argto1(optarg, 1, "sectors/cluster"); - opt_b = 0; - break; - case 'e': - opt_e = argto2(optarg, 1, "directory entries"); - break; - case 'f': - opt_f = optarg; - break; - case 'h': - opt_h = argto2(optarg, 1, "drive heads"); - break; - case 'i': - opt_i = argto2(optarg, 1, "info sector"); - break; - case 'k': - opt_k = argto2(optarg, 1, "backup sector"); - break; - case 'm': - opt_m = argto1(optarg, 0, "media descriptor"); - mflag = 1; - break; - case 'n': - opt_n = argto1(optarg, 1, "number of FATs"); - break; - case 'o': - opt_o = argto4(optarg, 0, "hidden sectors"); - oflag = 1; - break; - case 'r': - opt_r = argto2(optarg, 1, "reserved sectors"); - break; - case 's': - opt_s = argto4(optarg, 1, "file system size"); - break; - case 'u': - opt_u = argto2(optarg, 1, "sectors/track"); - break; - default: - usage(); - } + switch (ch) { + case '@': + opt_ofs = argtooff(optarg, "offset"); + break; + case 'N': + opt_N = 1; + break; + case 'A': + opt_A = 1; + break; + case 'B': + opt_B = optarg; + break; + case 'C': + opt_create = argtooff(optarg, "create size"); + break; + case 'F': + if (strcmp(optarg, "12") && strcmp(optarg, "16") && strcmp(optarg, "32")) + errx(1, "%s: bad FAT type", optarg); + opt_F = atoi(optarg); + break; + case 'I': + opt_I = argto4(optarg, 0, "volume ID"); + Iflag = 1; + break; + case 'L': + if (!oklabel(optarg)) + errx(1, "%s: bad volume label", optarg); + opt_L = optarg; + break; + case 'O': + if (strlen(optarg) > 8) + errx(1, "%s: bad OEM string", optarg); + opt_O = optarg; + break; + case 'S': + opt_S = argto2(optarg, 1, "bytes/sector"); + break; + case 'a': + opt_a = argto4(optarg, 1, "sectors/FAT"); + break; + case 'b': + opt_b = argtox(optarg, 1, "block size"); + opt_c = 0; + break; + case 'c': + opt_c = argto1(optarg, 1, "sectors/cluster"); + opt_b = 0; + break; + case 'e': + opt_e = argto2(optarg, 1, "directory entries"); + break; + case 'f': + opt_f = optarg; + break; + case 'h': + opt_h = argto2(optarg, 1, "drive heads"); + break; + case 'i': + opt_i = argto2(optarg, 1, "info sector"); + break; + case 'k': + opt_k = argto2(optarg, 1, "backup sector"); + break; + case 'm': + opt_m = argto1(optarg, 0, "media descriptor"); + mflag = 1; + break; + case 'n': + opt_n = argto1(optarg, 1, "number of FATs"); + break; + case 'o': + opt_o = argto4(optarg, 0, "hidden sectors"); + oflag = 1; + break; + case 'r': + opt_r = argto2(optarg, 1, "reserved sectors"); + break; + case 's': + opt_s = argto4(optarg, 1, "file system size"); + break; + case 'u': + opt_u = argto2(optarg, 1, "sectors/track"); + break; + default: + usage(); + } argc -= optind; argv += optind; if (argc < 1 || argc > 2) - usage(); + usage(); fname = *argv++; if (!opt_create && !strchr(fname, '/')) { - snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname); - if (!(fname = strdup(buf))) - err(1, "%s", buf); + snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname); + if (!(fname = strdup(buf))) + err(1, "%s", buf); } dtype = *argv; + if (opt_A) { + if (opt_r) + errx(1, "align (-A) is incompatible with -r"); + if (opt_N) + errx(1, "align (-A) is incompatible with -N"); + } if (opt_create) { - if (opt_N) - errx(1, "create (-C) is incompatible with -N"); - fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644); - if (fd == -1) - errx(1, "failed to create %s", fname); - if (ftruncate(fd, opt_create)) - errx(1, "failed to initialize %jd bytes", (intmax_t)opt_create); + if (opt_N) + errx(1, "create (-C) is incompatible with -N"); + fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644); + if (fd == -1) + errx(1, "failed to create %s", fname); + if (ftruncate(fd, opt_create)) + errx(1, "failed to initialize %jd bytes", (intmax_t)opt_create); } else if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1) - err(1, "%s", fname); + err(1, "%s", fname); if (fstat(fd, &sb)) - err(1, "%s", fname); + err(1, "%s", fname); if (opt_create) { - if (!S_ISREG(sb.st_mode)) - warnx("warning, %s is not a regular file", fname); + if (!S_ISREG(sb.st_mode)) + warnx("warning, %s is not a regular file", fname); } else { - if (!S_ISCHR(sb.st_mode)) - warnx("warning, %s is not a character device", fname); + if (!S_ISCHR(sb.st_mode)) + warnx("warning, %s is not a character device", fname); } if (!opt_N) - check_mounted(fname, sb.st_mode); + check_mounted(fname, sb.st_mode); if (opt_ofs && opt_ofs != lseek(fd, opt_ofs, SEEK_SET)) - errx(1, "cannot seek to %jd", (intmax_t)opt_ofs); + errx(1, "cannot seek to %jd", (intmax_t)opt_ofs); memset(&bpb, 0, sizeof(bpb)); if (opt_f) { - getstdfmt(opt_f, &bpb); - bpb.bsec = bpb.sec; - bpb.sec = 0; - bpb.bspf = bpb.spf; - bpb.spf = 0; + getstdfmt(opt_f, &bpb); + bpb.bsec = bpb.sec; + bpb.sec = 0; + bpb.bspf = bpb.spf; + bpb.spf = 0; } if (opt_h) - bpb.hds = opt_h; + bpb.hds = opt_h; if (opt_u) - bpb.spt = opt_u; + bpb.spt = opt_u; if (opt_S) - bpb.bps = opt_S; + bpb.bps = opt_S; if (opt_s) - bpb.bsec = opt_s; + bpb.bsec = opt_s; if (oflag) - bpb.hid = opt_o; + bpb.hid = opt_o; if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) { - off_t delta; - getdiskinfo(fd, fname, dtype, oflag, &bpb); + off_t delta; + getdiskinfo(fd, fname, dtype, oflag, &bpb); if (opt_s) { bpb.bsec = opt_s; } - bpb.bsec -= (opt_ofs / bpb.bps); - delta = bpb.bsec % bpb.spt; - if (delta != 0) { - warnx("trim %d sectors from %d to adjust to a multiple of %d", - (int)delta, bpb.bsec, bpb.spt); - bpb.bsec -= delta; - } - if (bpb.spc == 0) { /* set defaults */ - if (bpb.bsec <= 6000) /* about 3MB -> 512 bytes */ - bpb.spc = 1; - else if (bpb.bsec <= (1<<17)) /* 64M -> 4k */ - bpb.spc = 8; - else if (bpb.bsec <= (1<<19)) /* 256M -> 8k */ - bpb.spc = 16; - else if (bpb.bsec <= (1<<22)) /* 2G -> 16k, some versions of windows - require a minimum of 65527 clusters */ - bpb.spc = 32; - else - bpb.spc = 64; /* otherwise 32k */ - } + bpb.bsec -= (opt_ofs / bpb.bps); + delta = bpb.bsec % bpb.spt; + if (delta != 0) { + warnx("trim %d sectors from %d to adjust to a multiple of %d", + (int)delta, bpb.bsec, bpb.spt); + bpb.bsec -= delta; + } + if (bpb.spc == 0) { /* set defaults */ + if (bpb.bsec <= 6000) /* about 3MB -> 512 bytes */ + bpb.spc = 1; + else if (bpb.bsec <= (1<<17)) /* 64M -> 4k */ + bpb.spc = 8; + else if (bpb.bsec <= (1<<19)) /* 256M -> 8k */ + bpb.spc = 16; + else if (bpb.bsec <= (1<<22)) /* 2G -> 16k, some versions of windows + require a minimum of 65527 clusters */ + bpb.spc = 32; + else + bpb.spc = 64; /* otherwise 32k */ + } } if (!powerof2(bpb.bps)) - errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps); + errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps); if (bpb.bps < MINBPS) - errx(1, "bytes/sector (%u) is too small; minimum is %u", - bpb.bps, MINBPS); + errx(1, "bytes/sector (%u) is too small; minimum is %u", + bpb.bps, MINBPS); if (!(fat = opt_F)) { - if (opt_f) - fat = 12; - else if (!opt_e && (opt_i || opt_k)) - fat = 32; + if (opt_f) + fat = 12; + else if (!opt_e && (opt_i || opt_k)) + fat = 32; } if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k))) - errx(1, "-%c is not a legal FAT%s option", - fat == 32 ? 'e' : opt_i ? 'i' : 'k', - fat == 32 ? "32" : "12/16"); + errx(1, "-%c is not a legal FAT%s option", + fat == 32 ? 'e' : opt_i ? 'i' : 'k', + fat == 32 ? "32" : "12/16"); if (opt_f && fat == 32) - bpb.rde = 0; + bpb.rde = 0; if (opt_b) { - if (!powerof2(opt_b)) - errx(1, "block size (%u) is not a power of 2", opt_b); - if (opt_b < bpb.bps) - errx(1, "block size (%u) is too small; minimum is %u", - opt_b, bpb.bps); - if (opt_b > bpb.bps * MAXSPC) - errx(1, "block size (%u) is too large; maximum is %u", - opt_b, bpb.bps * MAXSPC); - bpb.spc = opt_b / bpb.bps; + if (!powerof2(opt_b)) + errx(1, "block size (%u) is not a power of 2", opt_b); + if (opt_b < bpb.bps) + errx(1, "block size (%u) is too small; minimum is %u", + opt_b, bpb.bps); + if (opt_b > bpb.bps * MAXSPC) + errx(1, "block size (%u) is too large; maximum is %u", opt_b, bpb.bps * MAXSPC); + bpb.spc = opt_b / bpb.bps; } if (opt_c) { - if (!powerof2(opt_c)) - errx(1, "sectors/cluster (%u) is not a power of 2", opt_c); - bpb.spc = opt_c; + if (!powerof2(opt_c)) + errx(1, "sectors/cluster (%u) is not a power of 2", opt_c); + bpb.spc = opt_c; } if (opt_r) - bpb.res = opt_r; + bpb.res = opt_r; if (opt_n) { - if (opt_n > MAXNFT) - errx(1, "number of FATs (%u) is too large; maximum is %u", - opt_n, MAXNFT); - bpb.nft = opt_n; + if (opt_n > MAXNFT) + errx(1, "number of FATs (%u) is too large; maximum is %u", opt_n, MAXNFT); + bpb.nft = opt_n; } if (opt_e) - bpb.rde = opt_e; + bpb.rde = opt_e; if (mflag) { - if (opt_m < 0xf0) - errx(1, "illegal media descriptor (%#x)", opt_m); - bpb.mid = opt_m; + if (opt_m < 0xf0) + errx(1, "illegal media descriptor (%#x)", opt_m); + bpb.mid = opt_m; } if (opt_a) - bpb.bspf = opt_a; + bpb.bspf = opt_a; if (opt_i) - bpb.infs = opt_i; + bpb.infs = opt_i; if (opt_k) - bpb.bkbs = opt_k; + bpb.bkbs = opt_k; bss = 1; bname = NULL; fd1 = -1; if (opt_B) { - bname = opt_B; - if (!strchr(bname, '/')) { - snprintf(buf, sizeof(buf), "/boot/%s", bname); - if (!(bname = strdup(buf))) - err(1, "%s", buf); - } - if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) - err(1, "%s", bname); - if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps || - sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16) - errx(1, "%s: inappropriate file type or format", bname); - bss = sb.st_size / bpb.bps; + bname = opt_B; + if (!strchr(bname, '/')) { + snprintf(buf, sizeof(buf), "/boot/%s", bname); + if (!(bname = strdup(buf))) + err(1, "%s", buf); + } + if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) + err(1, "%s", bname); + if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps || + sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16) + errx(1, "%s: inappropriate file type or format", bname); + bss = sb.st_size / bpb.bps; } if (!bpb.nft) - bpb.nft = 2; + bpb.nft = 2; if (!fat) { - if (bpb.bsec < (bpb.res ? bpb.res : bss) + - howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) * - ((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) * - bpb.nft + - howmany(bpb.rde ? bpb.rde : DEFRDE, - bpb.bps / sizeof(struct de)) + - (bpb.spc ? MINCLS16 : MAXCLS12 + 1) * - (bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps))) - fat = 12; - else if (bpb.rde || bpb.bsec < - (bpb.res ? bpb.res : bss) + - howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft + - howmany(DEFRDE, bpb.bps / sizeof(struct de)) + - (MAXCLS16 + 1) * - (bpb.spc ? bpb.spc : howmany(8192, bpb.bps))) - fat = 16; - else - fat = 32; + if (bpb.bsec < (bpb.res ? bpb.res : bss) + + howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) * + ((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) * + bpb.nft + + howmany(bpb.rde ? bpb.rde : DEFRDE, + bpb.bps / sizeof(struct de)) + + (bpb.spc ? MINCLS16 : MAXCLS12 + 1) * + (bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps))) + fat = 12; + else if (bpb.rde || bpb.bsec < + (bpb.res ? bpb.res : bss) + + howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft + + howmany(DEFRDE, bpb.bps / sizeof(struct de)) + + (MAXCLS16 + 1) * + (bpb.spc ? bpb.spc : howmany(8192, bpb.bps))) + fat = 16; + else + fat = 32; } x = bss; if (fat == 32) { - if (!bpb.infs) { - if (x == MAXU16 || x == bpb.bkbs) - errx(1, "no room for info sector"); - bpb.infs = x; - } - if (bpb.infs != MAXU16 && x <= bpb.infs) - x = bpb.infs + 1; - if (!bpb.bkbs) { - if (x == MAXU16) - errx(1, "no room for backup sector"); - bpb.bkbs = x; - } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs) - errx(1, "backup sector would overwrite info sector"); - if (bpb.bkbs != MAXU16 && x <= bpb.bkbs) - x = bpb.bkbs + 1; - } - if (!bpb.res) - bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x; - else if (bpb.res < x) - errx(1, "too few reserved sectors"); - if (fat != 32 && !bpb.rde) - bpb.rde = DEFRDE; - rds = howmany(bpb.rde, bpb.bps / sizeof(struct de)); - if (!bpb.spc) - for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps); - bpb.spc < MAXSPC && - bpb.res + - howmany((RESFTE + maxcls(fat)) * (fat / BPN), - bpb.bps * NPB) * bpb.nft + - rds + - (u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec; - bpb.spc <<= 1); - if (fat != 32 && bpb.bspf > MAXU16) - errx(1, "too many sectors/FAT for FAT12/16"); - x1 = bpb.res + rds; - x = bpb.bspf ? bpb.bspf : 1; - if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec) - errx(1, "meta data exceeds file system size"); - x1 += x * bpb.nft; - x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB / - (bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft); - x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN), - bpb.bps * NPB); - if (!bpb.bspf) { - bpb.bspf = x2; - x1 += (bpb.bspf - 1) * bpb.nft; + if (!bpb.infs) { + if (x == MAXU16 || x == bpb.bkbs) + errx(1, "no room for info sector"); + bpb.infs = x; + } + if (bpb.infs != MAXU16 && x <= bpb.infs) + x = bpb.infs + 1; + if (!bpb.bkbs) { + if (x == MAXU16) + errx(1, "no room for backup sector"); + bpb.bkbs = x; + } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs) + errx(1, "backup sector would overwrite info sector"); + if (bpb.bkbs != MAXU16 && x <= bpb.bkbs) + x = bpb.bkbs + 1; } + + extra_res = 0; + set_res = !bpb.res; + set_spf = !bpb.bspf; + set_spc = !bpb.spc; + tempx = x; + /* + * Attempt to align if opt_A is set. This is done by increasing the number + * of reserved blocks. This can cause other factors to change, which can in + * turn change the alignment. This should take at most 2 iterations, as + * increasing the reserved amount may cause the FAT size to decrease by 1, + * requiring another nft reserved blocks. If spc changes, it will + * be half of its previous size, and thus will not throw off alignment. + */ + do { + x = tempx; + if (set_res) + bpb.res = (fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x) + extra_res; + else if (bpb.res < x) + errx(1, "too few reserved sectors"); + if (fat != 32 && !bpb.rde) + bpb.rde = DEFRDE; + rds = howmany(bpb.rde, bpb.bps / sizeof(struct de)); + if (set_spc) + for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps); + bpb.spc < MAXSPC && + bpb.res + + howmany((RESFTE + maxcls(fat)) * (fat / BPN), + bpb.bps * NPB) * bpb.nft + + rds + + (u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec; + bpb.spc <<= 1); + if (fat != 32 && bpb.bspf > MAXU16) + errx(1, "too many sectors/FAT for FAT12/16"); + x1 = bpb.res + rds; + x = bpb.bspf ? bpb.bspf : 1; + if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec) + errx(1, "meta data exceeds file system size"); + x1 += x * bpb.nft; + x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB / + (bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft); + x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN), bpb.bps * NPB); + if (set_spf) { + bpb.bspf = x2; + x1 += (bpb.bspf - 1) * bpb.nft; + } + if(set_res) { + /* attempt to align root directory */ + alignment = (bpb.res + bpb.bspf * bpb.nft) % bpb.spc; + extra_res += bpb.spc - alignment; + } + attempts++; + } while(opt_A && alignment != 0 && attempts < 2); + if (alignment != 0) + warnx("warning: Alignment failed."); + cls = (bpb.bsec - x1) / bpb.spc; x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (fat / BPN) - RESFTE; if (cls > x) - cls = x; + cls = x; if (bpb.bspf < x2) - warnx("warning: sectors/FAT limits file system to %u clusters", - cls); + warnx("warning: sectors/FAT limits file system to %u clusters", cls); if (cls < mincls(fat)) - errx(1, "%u clusters too few clusters for FAT%u, need %u", cls, fat, - mincls(fat)); + errx(1, "%u clusters too few clusters for FAT%u, need %u", cls, fat, mincls(fat)); if (cls > maxcls(fat)) { - cls = maxcls(fat); - bpb.bsec = x1 + (cls + 1) * bpb.spc - 1; - warnx("warning: FAT type limits file system to %u sectors", - bpb.bsec); + cls = maxcls(fat); + bpb.bsec = x1 + (cls + 1) * bpb.spc - 1; + warnx("warning: FAT type limits file system to %u sectors", bpb.bsec); } - printf("%s: %u sector%s in %u FAT%u cluster%s " - "(%u bytes/cluster)\n", fname, cls * bpb.spc, - cls * bpb.spc == 1 ? "" : "s", cls, fat, - cls == 1 ? "" : "s", bpb.bps * bpb.spc); + printf("%s: %u sector%s in %u FAT%u cluster%s (%u bytes/cluster)\n", + fname, cls * bpb.spc, cls * bpb.spc == 1 ? "" : "s", cls, fat, + cls == 1 ? "" : "s", bpb.bps * bpb.spc); if (!bpb.mid) - bpb.mid = !bpb.hid ? 0xf0 : 0xf8; + bpb.mid = !bpb.hid ? 0xf0 : 0xf8; if (fat == 32) - bpb.rdcl = RESFTE; + bpb.rdcl = RESFTE; if (bpb.hid + bpb.bsec <= MAXU16) { - bpb.sec = bpb.bsec; - bpb.bsec = 0; + bpb.sec = bpb.bsec; + bpb.bsec = 0; } if (fat != 32) { - bpb.spf = bpb.bspf; - bpb.bspf = 0; + bpb.spf = bpb.bspf; + bpb.bspf = 0; } print_bpb(&bpb); if (!opt_N) { - gettimeofday(&tv, NULL); - now = tv.tv_sec; - tm = localtime(&now); - if (!(img = malloc(bpb.bps))) - err(1, "%u", bpb.bps); - dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft; - for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) { - x = lsn; - if (opt_B && - fat == 32 && bpb.bkbs != MAXU16 && - bss <= bpb.bkbs && x >= bpb.bkbs) { - x -= bpb.bkbs; - if (!x && lseek(fd1, opt_ofs, SEEK_SET)) - err(1, "%s", bname); - } - if (opt_B && x < bss) { - if ((n = read(fd1, img, bpb.bps)) == -1) - err(1, "%s", bname); - if ((unsigned)n != bpb.bps) - errx(1, "%s: can't read sector %u", bname, x); - } else - memset(img, 0, bpb.bps); - if (!lsn || - (fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) { - x1 = sizeof(struct bs); - bsbpb = (struct bsbpb *)(img + x1); - mk2(bsbpb->bps, bpb.bps); - mk1(bsbpb->spc, bpb.spc); - mk2(bsbpb->res, bpb.res); - mk1(bsbpb->nft, bpb.nft); - mk2(bsbpb->rde, bpb.rde); - mk2(bsbpb->sec, bpb.sec); - mk1(bsbpb->mid, bpb.mid); - mk2(bsbpb->spf, bpb.spf); - mk2(bsbpb->spt, bpb.spt); - mk2(bsbpb->hds, bpb.hds); - mk4(bsbpb->hid, bpb.hid); - mk4(bsbpb->bsec, bpb.bsec); - x1 += sizeof(struct bsbpb); - if (fat == 32) { - bsxbpb = (struct bsxbpb *)(img + x1); - mk4(bsxbpb->bspf, bpb.bspf); - mk2(bsxbpb->xflg, 0); - mk2(bsxbpb->vers, 0); - mk4(bsxbpb->rdcl, bpb.rdcl); - mk2(bsxbpb->infs, bpb.infs); - mk2(bsxbpb->bkbs, bpb.bkbs); - x1 += sizeof(struct bsxbpb); - } - bsx = (struct bsx *)(img + x1); - mk1(bsx->sig, 0x29); - if (Iflag) - x = opt_I; - else - x = (((u_int)(1 + tm->tm_mon) << 8 | - (u_int)tm->tm_mday) + - ((u_int)tm->tm_sec << 8 | - (u_int)(tv.tv_usec / 10))) << 16 | - ((u_int)(1900 + tm->tm_year) + - ((u_int)tm->tm_hour << 8 | - (u_int)tm->tm_min)); - mk4(bsx->volid, x); - mklabel(bsx->label, opt_L ? opt_L : "NO NAME"); - sprintf(buf, "FAT%u", fat); - setstr(bsx->type, buf, sizeof(bsx->type)); - if (!opt_B) { - x1 += sizeof(struct bsx); - bs = (struct bs *)img; - mk1(bs->jmp[0], 0xeb); - mk1(bs->jmp[1], x1 - 2); - mk1(bs->jmp[2], 0x90); - setstr(bs->oem, opt_O ? opt_O : "BSD 4.4", - sizeof(bs->oem)); - memcpy(img + x1, bootcode, sizeof(bootcode)); - mk2(img + MINBPS - 2, DOSMAGIC); - } - } else if (fat == 32 && bpb.infs != MAXU16 && - (lsn == bpb.infs || - (bpb.bkbs != MAXU16 && - lsn == bpb.bkbs + bpb.infs))) { - mk4(img, 0x41615252); - mk4(img + MINBPS - 28, 0x61417272); - mk4(img + MINBPS - 24, 0xffffffff); - mk4(img + MINBPS - 20, bpb.rdcl); - mk2(img + MINBPS - 2, DOSMAGIC); - } else if (lsn >= bpb.res && lsn < dir && - !((lsn - bpb.res) % - (bpb.spf ? bpb.spf : bpb.bspf))) { - mk1(img[0], bpb.mid); - for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++) - mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff); - } else if (lsn == dir && opt_L) { - de = (struct de *)img; - mklabel(de->namext, opt_L); - mk1(de->attr, 050); - x = (u_int)tm->tm_hour << 11 | - (u_int)tm->tm_min << 5 | - (u_int)tm->tm_sec >> 1; - mk2(de->time, x); - x = (u_int)(tm->tm_year - 80) << 9 | - (u_int)(tm->tm_mon + 1) << 5 | - (u_int)tm->tm_mday; - mk2(de->date, x); - } - if ((n = write(fd, img, bpb.bps)) == -1) - err(1, "%s", fname); - if ((unsigned)n != bpb.bps) { - errx(1, "%s: can't write sector %u", fname, lsn); + gettimeofday(&tv, NULL); + now = tv.tv_sec; + tm = localtime(&now); + if (!(img = malloc(bpb.bps))) + err(1, "%u", bpb.bps); + dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft; + for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) { + x = lsn; + if (opt_B && fat == 32 && bpb.bkbs != MAXU16 && bss <= bpb.bkbs && x >= bpb.bkbs) { + x -= bpb.bkbs; + if (!x && lseek(fd1, opt_ofs, SEEK_SET)) + err(1, "%s", bname); + } + if (opt_B && x < bss) { + if ((n = read(fd1, img, bpb.bps)) == -1) + err(1, "%s", bname); + if ((unsigned)n != bpb.bps) + errx(1, "%s: can't read sector %u", bname, x); + } else + memset(img, 0, bpb.bps); + if (!lsn || (fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) { + x1 = sizeof(struct bs); + bsbpb = (struct bsbpb *)(img + x1); + mk2(bsbpb->bps, bpb.bps); + mk1(bsbpb->spc, bpb.spc); + mk2(bsbpb->res, bpb.res); + mk1(bsbpb->nft, bpb.nft); + mk2(bsbpb->rde, bpb.rde); + mk2(bsbpb->sec, bpb.sec); + mk1(bsbpb->mid, bpb.mid); + mk2(bsbpb->spf, bpb.spf); + mk2(bsbpb->spt, bpb.spt); + mk2(bsbpb->hds, bpb.hds); + mk4(bsbpb->hid, bpb.hid); + mk4(bsbpb->bsec, bpb.bsec); + x1 += sizeof(struct bsbpb); + if (fat == 32) { + bsxbpb = (struct bsxbpb *)(img + x1); + mk4(bsxbpb->bspf, bpb.bspf); + mk2(bsxbpb->xflg, 0); + mk2(bsxbpb->vers, 0); + mk4(bsxbpb->rdcl, bpb.rdcl); + mk2(bsxbpb->infs, bpb.infs); + mk2(bsxbpb->bkbs, bpb.bkbs); + x1 += sizeof(struct bsxbpb); + } + bsx = (struct bsx *)(img + x1); + mk1(bsx->sig, 0x29); + if (Iflag) + x = opt_I; + else + x = (((u_int)(1 + tm->tm_mon) << 8 | + (u_int)tm->tm_mday) + + ((u_int)tm->tm_sec << 8 | + (u_int)(tv.tv_usec / 10))) << 16 | + ((u_int)(1900 + tm->tm_year) + + ((u_int)tm->tm_hour << 8 | + (u_int)tm->tm_min)); + mk4(bsx->volid, x); + mklabel(bsx->label, opt_L ? opt_L : "NO NAME"); + sprintf(buf, "FAT%u", fat); + setstr(bsx->type, buf, sizeof(bsx->type)); + if (!opt_B) { + x1 += sizeof(struct bsx); + bs = (struct bs *)img; + mk1(bs->jmp[0], 0xeb); + mk1(bs->jmp[1], x1 - 2); + mk1(bs->jmp[2], 0x90); + setstr(bs->oem, opt_O ? opt_O : "BSD 4.4", + sizeof(bs->oem)); + memcpy(img + x1, bootcode, sizeof(bootcode)); + mk2(img + MINBPS - 2, DOSMAGIC); + } + } else if (fat == 32 && bpb.infs != MAXU16 && + (lsn == bpb.infs || (bpb.bkbs != MAXU16 && + lsn == bpb.bkbs + bpb.infs))) { + mk4(img, 0x41615252); + mk4(img + MINBPS - 28, 0x61417272); + mk4(img + MINBPS - 24, 0xffffffff); + mk4(img + MINBPS - 20, bpb.rdcl); + mk2(img + MINBPS - 2, DOSMAGIC); + } else if (lsn >= bpb.res && lsn < dir && + !((lsn - bpb.res) % (bpb.spf ? bpb.spf : bpb.bspf))) { + mk1(img[0], bpb.mid); + for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++) + mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff); + } else if (lsn == dir && opt_L) { + de = (struct de *)img; + mklabel(de->namext, opt_L); + mk1(de->attr, 050); + x = (u_int)tm->tm_hour << 11 | + (u_int)tm->tm_min << 5 | + (u_int)tm->tm_sec >> 1; + mk2(de->time, x); + x = (u_int)(tm->tm_year - 80) << 9 | + (u_int)(tm->tm_mon + 1) << 5 | + (u_int)tm->tm_mday; + mk2(de->date, x); + } + if ((n = write(fd, img, bpb.bps)) == -1) + err(1, "%s", fname); + if ((unsigned)n != bpb.bps) { + errx(1, "%s: can't write sector %u", fname, lsn); exit(1); } - } + } } return 0; } @@ -725,8 +746,7 @@ newfs_msdos_main(int argc, char *argv[]) /* * Exit with error if file system is mounted. */ -static void -check_mounted(const char *fname, mode_t mode) +static void check_mounted(const char *fname, mode_t mode) { #ifdef ANDROID warnx("Skipping mount checks"); @@ -737,19 +757,18 @@ check_mounted(const char *fname, mode_t mode) int n, r; if (!(n = getmntinfo(&mp, MNT_NOWAIT))) - err(1, "getmntinfo"); + err(1, "getmntinfo"); len = strlen(_PATH_DEV); s1 = fname; if (!strncmp(s1, _PATH_DEV, len)) - s1 += len; + s1 += len; r = S_ISCHR(mode) && s1 != fname && *s1 == 'r'; for (; n--; mp++) { - s2 = mp->f_mntfromname; - if (!strncmp(s2, _PATH_DEV, len)) - s2 += len; - if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) || - !strcmp(s1, s2)) - errx(1, "%s is mounted on %s", fname, mp->f_mntonname); + s2 = mp->f_mntfromname; + if (!strncmp(s2, _PATH_DEV, len)) + s2 += len; + if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) || !strcmp(s1, s2)) + errx(1, "%s is mounted on %s", fname, mp->f_mntonname); } #endif } @@ -757,15 +776,14 @@ check_mounted(const char *fname, mode_t mode) /* * Get a standard format. */ -static void -getstdfmt(const char *fmt, struct bpb *bpb) +static void getstdfmt(const char *fmt, struct bpb *bpb) { u_int x, i; x = sizeof(stdfmt) / sizeof(stdfmt[0]); for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++); if (i == x) - errx(1, "%s: unknown standard format", fmt); + errx(1, "%s: unknown standard format", fmt); *bpb = stdfmt[i].bpb; } @@ -774,9 +792,8 @@ getstdfmt(const char *fmt, struct bpb *bpb) */ #ifdef ANDROID -static void -getdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, - struct bpb *bpb) +static void getdiskinfo(int fd, const char *fname, const char *dtype, + __unused int oflag,struct bpb *bpb) { struct hd_geometry geom; @@ -817,9 +834,8 @@ getdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, #else -static void -getdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, - struct bpb *bpb) +static void getdiskinfo(int fd, const char *fname, const char *dtype, + __unused int oflag, struct bpb *bpb) { struct disklabel *lp, dlp; struct fd_type type; @@ -829,97 +845,96 @@ getdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, /* If the user specified a disk type, try to use that */ if (dtype != NULL) { - lp = getdiskbyname(dtype); + lp = getdiskbyname(dtype); } /* Maybe it's a floppy drive */ if (lp == NULL) { - if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) { - struct stat st; - - if (fstat(fd, &st)) - err(1, "Cannot get disk size"); - /* create a fake geometry for a file image */ - ms = st.st_size; - dlp.d_secsize = 512; - dlp.d_nsectors = 63; - dlp.d_ntracks = 255; - dlp.d_secperunit = ms / dlp.d_secsize; - lp = &dlp; - } else if (ioctl(fd, FD_GTYPE, &type) != -1) { - dlp.d_secsize = 128 << type.secsize; - dlp.d_nsectors = type.sectrac; - dlp.d_ntracks = type.heads; - dlp.d_secperunit = ms / dlp.d_secsize; - lp = &dlp; - } + if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) { + struct stat st; + + if (fstat(fd, &st)) + err(1, "Cannot get disk size"); + /* create a fake geometry for a file image */ + ms = st.st_size; + dlp.d_secsize = 512; + dlp.d_nsectors = 63; + dlp.d_ntracks = 255; + dlp.d_secperunit = ms / dlp.d_secsize; + lp = &dlp; + } else if (ioctl(fd, FD_GTYPE, &type) != -1) { + dlp.d_secsize = 128 << type.secsize; + dlp.d_nsectors = type.sectrac; + dlp.d_ntracks = type.heads; + dlp.d_secperunit = ms / dlp.d_secsize; + lp = &dlp; + } } /* Maybe it's a fixed drive */ if (lp == NULL) { - if (ioctl(fd, DIOCGDINFO, &dlp) == -1) { - if (bpb->bps == 0 && ioctl(fd, DIOCGSECTORSIZE, &dlp.d_secsize) == -1) - errx(1, "Cannot get sector size, %s", strerror(errno)); - - /* XXX Should we use bpb->bps if it's set? */ - dlp.d_secperunit = ms / dlp.d_secsize; - - if (bpb->spt == 0 && ioctl(fd, DIOCGFWSECTORS, &dlp.d_nsectors) == -1) { - warnx("Cannot get number of sectors per track, %s", strerror(errno)); - dlp.d_nsectors = 63; - } - if (bpb->hds == 0 && ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks) == -1) { - warnx("Cannot get number of heads, %s", strerror(errno)); - if (dlp.d_secperunit <= 63*1*1024) - dlp.d_ntracks = 1; - else if (dlp.d_secperunit <= 63*16*1024) - dlp.d_ntracks = 16; - else - dlp.d_ntracks = 255; - } - } - - hs = (ms / dlp.d_secsize) - dlp.d_secperunit; - lp = &dlp; + if (ioctl(fd, DIOCGDINFO, &dlp) == -1) { + if (bpb->bps == 0 && ioctl(fd, DIOCGSECTORSIZE, &dlp.d_secsize) == -1) + errx(1, "Cannot get sector size, %s", strerror(errno)); + + /* XXX Should we use bpb->bps if it's set? */ + dlp.d_secperunit = ms / dlp.d_secsize; + + if (bpb->spt == 0 && ioctl(fd, DIOCGFWSECTORS, &dlp.d_nsectors) == -1) { + warnx("Cannot get number of sectors per track, %s", strerror(errno)); + dlp.d_nsectors = 63; + } + if (bpb->hds == 0 && ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks) == -1) { + warnx("Cannot get number of heads, %s", strerror(errno)); + if (dlp.d_secperunit <= 63*1*1024) + dlp.d_ntracks = 1; + else if (dlp.d_secperunit <= 63*16*1024) + dlp.d_ntracks = 16; + else + dlp.d_ntracks = 255; + } + } + + hs = (ms / dlp.d_secsize) - dlp.d_secperunit; + lp = &dlp; } if (bpb->bps == 0) - bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector"); + bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector"); if (bpb->spt == 0) - bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track"); + bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track"); if (bpb->hds == 0) - bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads"); + bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads"); if (bpb->bsec == 0) - bpb->bsec = lp->d_secperunit; + bpb->bsec = lp->d_secperunit; if (bpb->hid == 0) - bpb->hid = hs; + bpb->hid = hs; } #endif /* * Print out BPB values. */ -static void -print_bpb(struct bpb *bpb) +static void print_bpb(struct bpb *bpb) { printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res, - bpb->nft); + bpb->nft); if (bpb->rde) - printf(" rde=%u", bpb->rde); + printf(" rde=%u", bpb->rde); if (bpb->sec) - printf(" sec=%u", bpb->sec); + printf(" sec=%u", bpb->sec); printf(" mid=%#x", bpb->mid); if (bpb->spf) - printf(" spf=%u", bpb->spf); + printf(" spf=%u", bpb->spf); printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid); if (bpb->bsec) - printf(" bsec=%u", bpb->bsec); + printf(" bsec=%u", bpb->bsec); if (!bpb->spf) { - printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl); - printf(" infs="); - printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs); - printf(" bkbs="); - printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs); + printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl); + printf(" infs="); + printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs); + printf(" bkbs="); + printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs); } printf("\n"); } @@ -927,21 +942,19 @@ print_bpb(struct bpb *bpb) /* * Check a disk geometry value. */ -static u_int -ckgeom(const char *fname, u_int val, const char *msg) +static u_int ckgeom(const char *fname, u_int val, const char *msg) { if (!val) - errx(1, "%s: no default %s", fname, msg); + errx(1, "%s: no default %s", fname, msg); if (val > MAXU16) - errx(1, "%s: illegal %s %d", fname, msg, val); + errx(1, "%s: illegal %s %d", fname, msg, val); return val; } /* * Convert and check a numeric option argument. */ -static u_int -argtou(const char *arg, u_int lo, u_int hi, const char *msg) +static u_int argtou(const char *arg, u_int lo, u_int hi, const char *msg) { char *s; u_long x; @@ -949,15 +962,14 @@ argtou(const char *arg, u_int lo, u_int hi, const char *msg) errno = 0; x = strtoul(arg, &s, 0); if (errno || !*arg || *s || x < lo || x > hi) - errx(1, "%s: bad %s", arg, msg); + errx(1, "%s: bad %s", arg, msg); return x; } /* * Same for off_t, with optional skmgpP suffix */ -static off_t -argtooff(const char *arg, const char *msg) +static off_t argtooff(const char *arg, const char *msg) { char *s; off_t x; @@ -965,40 +977,40 @@ argtooff(const char *arg, const char *msg) x = strtoll(arg, &s, 0); /* allow at most one extra char */ if (errno || x < 0 || (s[0] && s[1]) ) - errx(1, "%s: bad %s", arg, msg); - if (*s) { /* the extra char is the multiplier */ - switch (*s) { - default: - errx(1, "%s: bad %s", arg, msg); - /* notreached */ - - case 's': /* sector */ - case 'S': - x <<= 9; /* times 512 */ - break; - - case 'k': /* kilobyte */ - case 'K': - x <<= 10; /* times 1024 */ - break; - - case 'm': /* megabyte */ - case 'M': - x <<= 20; /* times 1024*1024 */ - break; - - case 'g': /* gigabyte */ - case 'G': - x <<= 30; /* times 1024*1024*1024 */ - break; - - case 'p': /* partition start */ - case 'P': /* partition start */ - case 'l': /* partition length */ - case 'L': /* partition length */ - errx(1, "%s: not supported yet %s", arg, msg); - /* notreached */ - } + errx(1, "%s: bad %s", arg, msg); + if (*s) { /* the extra char is the multiplier */ + switch (*s) { + default: + errx(1, "%s: bad %s", arg, msg); + /* notreached */ + + case 's': /* sector */ + case 'S': + x <<= 9; /* times 512 */ + break; + + case 'k': /* kilobyte */ + case 'K': + x <<= 10; /* times 1024 */ + break; + + case 'm': /* megabyte */ + case 'M': + x <<= 20; /* times 1024*1024 */ + break; + + case 'g': /* gigabyte */ + case 'G': + x <<= 30; /* times 1024*1024*1024 */ + break; + + case 'p': /* partition start */ + case 'P': /* partition start */ + case 'l': /* partition length */ + case 'L': /* partition length */ + errx(1, "%s: not supported yet %s", arg, msg); + /* notreached */ + } } return x; } @@ -1006,15 +1018,14 @@ argtooff(const char *arg, const char *msg) /* * Check a volume label. */ -static int -oklabel(const char *src) +static int oklabel(const char *src) { int c, i; for (i = 0; i <= 11; i++) { - c = (u_char)*src++; - if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) - break; + c = (u_char)*src++; + if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) + break; } return i && !c; } @@ -1022,58 +1033,56 @@ oklabel(const char *src) /* * Make a volume label. */ -static void -mklabel(u_int8_t *dest, const char *src) +static void mklabel(u_int8_t *dest, const char *src) { int c, i; for (i = 0; i < 11; i++) { - c = *src ? toupper(*src++) : ' '; - *dest++ = !i && c == '\xe5' ? 5 : c; + c = *src ? toupper(*src++) : ' '; + *dest++ = !i && c == '\xe5' ? 5 : c; } } /* * Copy string, padding with spaces. */ -static void -setstr(u_int8_t *dest, const char *src, size_t len) +static void setstr(u_int8_t *dest, const char *src, size_t len) { while (len--) - *dest++ = *src ? *src++ : ' '; + *dest++ = *src ? *src++ : ' '; } /* * Print usage message. */ -static void -usage(void) +static void usage(void) { - fprintf(stderr, - "usage: newfs_msdos [ -options ] special [disktype]\n" - "where the options are:\n" - "\t-@ create file system at specified offset\n" - "\t-B get bootstrap from file\n" - "\t-C create image file with specified size\n" - "\t-F FAT type (12, 16, or 32)\n" - "\t-I volume ID\n" - "\t-L volume label\n" - "\t-N don't create file system: just print out parameters\n" - "\t-O OEM string\n" - "\t-S bytes/sector\n" - "\t-a sectors/FAT\n" - "\t-b block size\n" - "\t-c sectors/cluster\n" - "\t-e root directory entries\n" - "\t-f standard format\n" - "\t-h drive heads\n" - "\t-i file system info sector\n" - "\t-k backup boot sector\n" - "\t-m media descriptor\n" - "\t-n number of FATs\n" - "\t-o hidden sectors\n" - "\t-r reserved sectors\n" - "\t-s file system size (sectors)\n" - "\t-u sectors/track\n"); - exit(1); + fprintf(stderr, + "usage: newfs_msdos [ -options ] special [disktype]\n" + "where the options are:\n" + "\t-@ create file system at specified offset\n" + "\t-A Attempt to cluster align root directory\n" + "\t-B get bootstrap from file\n" + "\t-C create image file with specified size\n" + "\t-F FAT type (12, 16, or 32)\n" + "\t-I volume ID\n" + "\t-L volume label\n" + "\t-N don't create file system: just print out parameters\n" + "\t-O OEM string\n" + "\t-S bytes/sector\n" + "\t-a sectors/FAT\n" + "\t-b block size\n" + "\t-c sectors/cluster\n" + "\t-e root directory entries\n" + "\t-f standard format\n" + "\t-h drive heads\n" + "\t-i file system info sector\n" + "\t-k backup boot sector\n" + "\t-m media descriptor\n" + "\t-n number of FATs\n" + "\t-o hidden sectors\n" + "\t-r reserved sectors\n" + "\t-s file system size (sectors)\n" + "\t-u sectors/track\n"); + exit(1); } |