boot.c File Reference

#include <schily/mconfig.h>
#include "mkisofs.h"
#include <schily/fcntl.h>
#include <schily/utypes.h>
#include <schily/intcvt.h>
#include <schily/schily.h>
#include "sunlabel.h"

Include dependency graph for boot.c:

Go to the source code of this file.

Functions
LOCAL void init_sparc_label	__PR ((void))
EXPORT int sparc_boot_label	__PR ((char *label))
EXPORT int scan_sparc_boot	__PR ((char *files))
LOCAL void dup_sun_label	__PR ((int part))
LOCAL int sunboot_write	__PR ((FILE *outfile))
LOCAL int sunlabel_size	__PR ((UInt32_t starting_extent))
LOCAL void	init_sparc_label ()
LOCAL void	init_sunx86_label ()
EXPORT int	sparc_boot_label (char *label)
EXPORT int	sunx86_boot_label (char *label)
EXPORT int	scan_sparc_boot (char *files)
EXPORT int	scan_sunx86_boot (char *files)
EXPORT int	make_sun_label ()
EXPORT int	make_sunx86_label ()
LOCAL void	dup_sun_label (int part)
LOCAL int	sunboot_write (FILE *outfile)
LOCAL int	sunlabel_size (UInt32_t starting_extent)
LOCAL int	sunlabel_write (FILE *outfile)
LOCAL int	genboot_size (UInt32_t starting_extent)
LOCAL int	genboot_write (FILE *outfile)

Variables
static UConst char	sccsid []
int	use_sunx86boot
LOCAL struct sun_label	cd_label
LOCAL struct x86_label	sx86_label
LOCAL struct pc_part	fdisk_part
LOCAL char *	boot_files [NDKMAP]
struct output_fragment	sunboot_desc = {NULL, NULL, NULL, sunboot_write, "Sun Boot" }
struct output_fragment	sunlabel_desc = {NULL, sunlabel_size, NULL, sunlabel_write, "Sun Disk Label" }
struct output_fragment	genboot_desc = {NULL, genboot_size, NULL, genboot_write, "Generic Boot" }

Function Documentation

__PR() [1/6]

EXPORT int scan_sparc_boot __PR

(

(char *files)

)

__PR() [2/6]

EXPORT int sparc_boot_label __PR

(

(char *label)

)

__PR() [3/6]

LOCAL int sunboot_write __PR

(

(FILE *outfile)

)

__PR() [4/6]

LOCAL void dup_sun_label __PR

(

(int part)

)

__PR() [5/6]

LOCAL int sunlabel_size __PR

(

(UInt32_t starting_extent)

)

__PR() [6/6]

LOCAL void init_sparc_label __PR

(

(void)

)

dup_sun_label()

LOCAL void dup_sun_label

(

int

part

)

Definition at line 347 of file boot.c.

{
    int cyl;
    int nblk;
    int i;
 
 
    if (part < 1 || part >= NDKMAP)
        part = 1;
    cyl = a_to_4_byte(cd_label.dkl_map[part-1].dkl_cylno);
    nblk = a_to_4_byte(cd_label.dkl_map[part-1].dkl_nblk);
 
    for (i = part; i < NDKMAP; i++) {
        i_to_4_byte(cd_label.dkl_map[i].dkl_cylno, cyl);
        i_to_4_byte(cd_label.dkl_map[i].dkl_nblk, nblk);
 
        i_to_2_byte(cd_label.dkl_vtoc.v_part[i].p_tag,  V_ROOT);
        i_to_2_byte(cd_label.dkl_vtoc.v_part[i].p_flag, V_RONLY);
    }
}

Referenced by make_sun_label().

genboot_size()

LOCAL int genboot_size

(

UInt32_t

starting_extent

)

Definition at line 515 of file boot.c.

{
    if (last_extent > (session_start + 1))
        comerrno(EX_BAD, _("Cannot create generic boot on offset != 0.\n"));
    last_extent = session_start + 16;
    return (0);
}

genboot_write()

LOCAL int genboot_write

(

FILE *

outfile

)

Definition at line 529 of file boot.c.

{
    char    buffer[SECTOR_SIZE];
    int i;
    int f;
 
    if ((f = open(genboot_image, O_RDONLY| O_BINARY)) < 0)
        comerr(_("Cannot open '%s'.\n"), genboot_image);
 
    for (i = 0; i < 16; i++) {
        memset(buffer, 0, sizeof (buffer));
        if (read(f, buffer, SECTOR_SIZE) < 0)
            comerr(_("Read error on '%s'.\n"), genboot_image);
 
        if (i != 0 || last_extent_written == session_start) {
            xfwrite(buffer, SECTOR_SIZE, 1, outfile, 0, FALSE);
            last_extent_written++;
        }
    }
    close(f);
    return (0);
}

init_sparc_label()

LOCAL void init_sparc_label

(

)

Definition at line 63 of file boot.c.

{
    i_to_4_byte(cd_label.dkl_vtoc.v_version, V_VERSION);
    i_to_2_byte(cd_label.dkl_vtoc.v_nparts, NDKMAP);
    i_to_4_byte(cd_label.dkl_vtoc.v_sanity, VTOC_SANE);
 
    i_to_2_byte(cd_label.dkl_rpm, CD_RPM);
    i_to_2_byte(cd_label.dkl_pcyl, CD_PCYL);
    i_to_2_byte(cd_label.dkl_apc, CD_APC);
    i_to_2_byte(cd_label.dkl_intrlv, CD_INTRLV);
    i_to_2_byte(cd_label.dkl_ncyl, CD_NCYL);
    i_to_2_byte(cd_label.dkl_acyl, CD_ACYL);
    i_to_2_byte(cd_label.dkl_nhead, CD_NHEAD);
    i_to_2_byte(cd_label.dkl_nsect, CD_NSECT);
 
    cd_label.dkl_magic[0] = DKL_MAGIC_0;
    cd_label.dkl_magic[1] = DKL_MAGIC_1;
}

Referenced by scan_sparc_boot().

init_sunx86_label()

LOCAL void init_sunx86_label

(

)

Definition at line 83 of file boot.c.

{
    li_to_4_byte(sx86_label.dkl_vtoc.v_sanity, VTOC_SANE);
    li_to_4_byte(sx86_label.dkl_vtoc.v_version, V_VERSION);
    li_to_2_byte(sx86_label.dkl_vtoc.v_sectorsz, 512);
    li_to_2_byte(sx86_label.dkl_vtoc.v_nparts, NX86MAP);
 
    li_to_4_byte(sx86_label.dkl_pcyl, CD_PCYL);
    li_to_4_byte(sx86_label.dkl_ncyl, CD_NCYL);
    li_to_2_byte(sx86_label.dkl_acyl, CD_ACYL);
    li_to_2_byte(sx86_label.dkl_bcyl, 0);
 
    li_to_4_byte(sx86_label.dkl_nhead, CD_NHEAD);
    li_to_4_byte(sx86_label.dkl_nsect, CD_NSECT);
    li_to_2_byte(sx86_label.dkl_intrlv, CD_INTRLV);
    li_to_2_byte(sx86_label.dkl_skew, 0);
    li_to_2_byte(sx86_label.dkl_apc, CD_APC);
    li_to_2_byte(sx86_label.dkl_rpm, CD_RPM);
 
    li_to_2_byte(sx86_label.dkl_write_reinstruct, 0);
    li_to_2_byte(sx86_label.dkl_read_reinstruct, 0);
 
    li_to_2_byte(sx86_label.dkl_magic, DKL_MAGIC);
}

Referenced by scan_sunx86_boot().

make_sun_label()

EXPORT int make_sun_label

(

)

Definition at line 243 of file boot.c.

{
    int last;
    int cyl = 0;
    int nblk;
    int bsize;
    int i;
    char    *p;
 
    /*
     * Compute the size of the padding for the iso9660 image
     * to allow the next partition to start on a cylinder boundary.
     */
    last = roundup(last_extent, (CD_CYLSIZE/SECTOR_SIZE));
 
    i_to_4_byte(cd_label.dkl_map[0].dkl_nblk, last*4);
    bsize = 0;
    for (i = 0; i < NDKMAP; i++) {
        p = boot_files[i];
        if (p != NULL && strcmp(p, "...") == '\0') {
            dup_sun_label(i);
            break;
        }
        if ((nblk = a_to_4_byte(cd_label.dkl_map[i].dkl_nblk)) == 0)
            continue;
 
        i_to_4_byte(cd_label.dkl_map[i].dkl_cylno, cyl);
        cyl += nblk / (CD_CYLSIZE/512);
        if (i > 0)
            bsize += nblk;
    }
    bsize /= 4;
    return (last-last_extent+bsize);
}

Referenced by main().

make_sunx86_label()

EXPORT int make_sunx86_label

(

)

Definition at line 287 of file boot.c.

{
    int last;
    int cyl = 0;
    int nblk;
    int bsize;
    int i;
    int partoff = 1;    /* The offset of the Solaris 0x82 partition */
 
    /*
     * Compute the size of the padding for the iso9660 image
     * to allow the next partition to start on a cylinder boundary.
     */
    last = roundup(last_extent, (CD_CYLSIZE/SECTOR_SIZE));
 
    li_to_4_byte(sx86_label.dkl_vtoc.v_part[1].p_size, last*4);
 
    /*
     * Note that the Solaris fdisk partition with fdisk signature 0x82
     * is created at fixed offset 1 sector == 512 Bytes by this
     * implementation.
     * We need subtract this partition offset from all absolute
     * partition offsets in order to get offsets relative to the
     * Solaris primary partition.
     */
    bsize = 0;
    for (i = 0; i < NDKMAP; i++) {
        if (i == 2)     /* Never include the whole disk in */
            continue;   /* size/offset computations    */
 
        if ((nblk = la_to_4_byte(sx86_label.dkl_vtoc.v_part[i].p_size)) == 0)
            continue;
 
        li_to_4_byte(sx86_label.dkl_vtoc.v_part[i].p_start,
                        cyl*(CD_CYLSIZE/512)-partoff);
        cyl += nblk / (CD_CYLSIZE/512);
        if (i == 0 || i > 2)
            bsize += nblk;
    }
    li_to_4_byte(sx86_label.dkl_vtoc.v_part[0].p_start, last*4-partoff);
    li_to_4_byte(sx86_label.dkl_vtoc.v_part[1].p_start, 0);
    li_to_4_byte(sx86_label.dkl_vtoc.v_part[1].p_size, last*4-partoff);
    li_to_4_byte(sx86_label.dkl_vtoc.v_part[2].p_start, 0);
    li_to_4_byte(sx86_label.dkl_vtoc.v_part[2].p_size, last*4+bsize);
 
    fdisk_part.part[0].pr_status = STATUS_ACTIVE;
    fdisk_part.part[0].pr_type   = TYPE_SOLARIS;
    li_to_4_byte(fdisk_part.part[0].pr_partoff, partoff);
    li_to_4_byte(fdisk_part.part[0].pr_nsect, last*4+bsize-partoff);
    fdisk_part.magic[0] = 0x55;
    fdisk_part.magic[1] = 0xAA;
 
    bsize /= 4;
    return (last-last_extent+bsize);
}

Referenced by main().

scan_sparc_boot()

EXPORT int scan_sparc_boot

(

char *

files

)

Definition at line 133 of file boot.c.

{
    char        *p;
    int     i = 1;
    struct stat statbuf;
    int     status;
extern  int     use_sparcboot;
extern  int     use_sunx86boot;
 
    if (use_sunx86boot)
        comerrno(EX_BAD,
        _("-sparc-boot and -sunx86-boot are mutual exclusive.\n"));
    use_sparcboot++;
 
    init_sparc_label();
 
    do {
        if (i >= NDKMAP)
            comerrno(EX_BAD, _("Too many boot partitions.\n"));
        boot_files[i++] = files;
        if ((p = strchr(files, ',')) != NULL)
            *p++ = '\0';
        files = p;
    } while (p);
 
    i_to_2_byte(cd_label.dkl_vtoc.v_part[0].p_tag,  V_USR);
    i_to_2_byte(cd_label.dkl_vtoc.v_part[0].p_flag, V_RONLY);
    for (i = 0; i < NDKMAP; i++) {
        p = boot_files[i];
        if (p == NULL || *p == '\0')
            continue;
        if (strcmp(p, "...") == '\0')
            break;
 
        status = stat_filter(p, &statbuf);
        if (status < 0 || access(p, R_OK) < 0)
            comerr(_("Cannot access '%s'.\n"), p);
 
        i_to_4_byte(cd_label.dkl_map[i].dkl_nblk,
            roundup(statbuf.st_size, CD_CYLSIZE)/512);
 
        i_to_2_byte(cd_label.dkl_vtoc.v_part[i].p_tag,  V_ROOT);
        i_to_2_byte(cd_label.dkl_vtoc.v_part[i].p_flag, V_RONLY);
    }
    return (1);
}

scan_sunx86_boot()

EXPORT int scan_sunx86_boot

(

char *

files

)

Definition at line 182 of file boot.c.

{
    char        *p;
    int     i = 0;
    struct stat statbuf;
    int     status;
extern  int     use_sparcboot;
extern  int     use_sunx86boot;
 
    if (use_sparcboot)
        comerrno(EX_BAD,
        _("-sparc-boot and -sunx86-boot are mutual exclusive.\n"));
    use_sunx86boot++;
 
 
    init_sunx86_label();
 
    do {
        if (i >= NDKMAP)
            comerrno(EX_BAD, _("Too many boot partitions.\n"));
        boot_files[i++] = files;
        if ((p = strchr(files, ',')) != NULL)
            *p++ = '\0';
        files = p;
    } while (p);
 
    li_to_2_byte(sx86_label.dkl_vtoc.v_part[0].p_tag,  V_ROOT);  /* UFS */
    li_to_2_byte(sx86_label.dkl_vtoc.v_part[0].p_flag, V_RONLY);
    li_to_2_byte(sx86_label.dkl_vtoc.v_part[1].p_tag,  V_USR);   /* ISO */
    li_to_2_byte(sx86_label.dkl_vtoc.v_part[1].p_flag, V_RONLY);
    li_to_2_byte(sx86_label.dkl_vtoc.v_part[2].p_tag,  0);      /* ALL */
    li_to_2_byte(sx86_label.dkl_vtoc.v_part[2].p_flag, 0);
    for (i = 0; i < NDKMAP; i++) {
        p = boot_files[i];
        if (p == NULL || *p == '\0')
            continue;
        if (i == 1 || i == 2) {
            comerrno(EX_BAD,
            _("Partition %d may not have a filename.\n"), i);
        }
 
        status = stat_filter(p, &statbuf);
        if (status < 0 || access(p, R_OK) < 0)
            comerr(_("Cannot access '%s'.\n"), p);
 
        li_to_4_byte(sx86_label.dkl_vtoc.v_part[i].p_size,
            roundup(statbuf.st_size, CD_CYLSIZE)/512);
 
        if (i > 2) {
            li_to_2_byte(sx86_label.dkl_vtoc.v_part[i].p_tag,  V_USR);
            li_to_2_byte(sx86_label.dkl_vtoc.v_part[i].p_flag, V_RONLY);
        }
    }
    return (1);
}

sparc_boot_label()

EXPORT int sparc_boot_label

(

char *

label

)

Definition at line 112 of file boot.c.

{
    strncpy(cd_label.dkl_ascilabel, label, 127);
    cd_label.dkl_ascilabel[127] = '\0';
    return (1);
}

sunboot_write()

LOCAL int sunboot_write

(

FILE *

outfile

)

Definition at line 373 of file boot.c.

{
    char    buffer[SECTOR_SIZE];
    int i;
    int n;
    int nblk;
    int amt;
    int f;
    char    *p;
 
    memset(buffer, 0, sizeof (buffer));
 
    /*
     * Write padding to the iso9660 image to allow the
     * boot partitions to start on a cylinder boundary.
     */
    amt = roundup(last_extent_written, (CD_CYLSIZE/SECTOR_SIZE)) - last_extent_written;
    for (n = 0; n < amt; n++) {
        xfwrite(buffer, SECTOR_SIZE, 1, outfile, 0, FALSE);
        last_extent_written++;
    }
    if (use_sunx86boot)
        i = 0;
    else
        i = 1;
    for (; i < NDKMAP; i++) {
        if (use_sunx86boot && (i == 1 || i == 2))
            continue;
        p = boot_files[i];
        if (p == NULL || *p == '\0')
            continue;
        if (p != NULL && strcmp(p, "...") == '\0')
            break;
        if (use_sunx86boot) {
            if ((nblk = la_to_4_byte(sx86_label.dkl_vtoc.v_part[i].p_size)) == 0)
                continue;
        } else {
            if ((nblk = a_to_4_byte(cd_label.dkl_map[i].dkl_nblk)) == 0)
                continue;
        }
        if ((f = open(boot_files[i], O_RDONLY| O_BINARY)) < 0)
            comerr(_("Cannot open '%s'.\n"), boot_files[i]);
 
        amt = nblk / 4;
        for (n = 0; n < amt; n++) {
            memset(buffer, 0, sizeof (buffer));
            if (read(f, buffer, SECTOR_SIZE) < 0)
                comerr(_("Read error on '%s'.\n"), boot_files[i]);
            xfwrite(buffer, SECTOR_SIZE, 1, outfile, 0, FALSE);
            last_extent_written++;
        }
        close(f);
    }
    fprintf(stderr, _("Total extents including %s boot = %u\n"),
                use_sunx86boot ? "Solaris x86":"sparc",
                last_extent_written - session_start);
    return (0);
}

sunlabel_size()

LOCAL int sunlabel_size

(

UInt32_t

starting_extent

)

Definition at line 438 of file boot.c.

{
    if (last_extent != session_start)
        comerrno(EX_BAD, _("Cannot create sparc boot on offset != 0.\n"));
    last_extent++;
    return (0);
}

sunlabel_write()

LOCAL int sunlabel_write

(

FILE *

outfile

)

Definition at line 454 of file boot.c.

{
        char    buffer[SECTOR_SIZE];
    register char   *p;
    register short  count = (512/2) - 1;
        int f;
 
    memset(buffer, 0, sizeof (buffer));
    if (genboot_image) {
        if ((f = open(genboot_image, O_RDONLY| O_BINARY)) < 0)
            comerr(_("Cannot open '%s'.\n"), genboot_image);
 
        if (read(f, buffer, SECTOR_SIZE) < 0)
            comerr(_("Read error on '%s'.\n"), genboot_image);
        close(f);
    }
 
    if (use_sunx86boot) {
        if (sx86_label.dkl_vtoc.v_asciilabel[0] == '\0')
            strcpy(sx86_label.dkl_vtoc.v_asciilabel, CD_X86LABEL);
 
        p = (char *)&sx86_label;
        sx86_label.dkl_cksum[0] = 0;
        sx86_label.dkl_cksum[1] = 0;
        while (count-- > 0) {
            sx86_label.dkl_cksum[0] ^= *p++;
            sx86_label.dkl_cksum[1] ^= *p++;
        }
        memcpy(&buffer[0x1BE], fdisk_part.part, sizeof (fdisk_part.part));
        p = &buffer[510];
        *p++ = 0x55;
        *p   = 0xAA;
        memcpy(&buffer[1024], &sx86_label, 512);
    } else {
        /*
         * If we don't already have a Sun disk label text
         * set up the default.
         */
        if (cd_label.dkl_ascilabel[0] == '\0')
            strcpy(cd_label.dkl_ascilabel, CD_DEFLABEL);
 
        p = (char *)&cd_label;
        cd_label.dkl_cksum[0] = 0;
        cd_label.dkl_cksum[1] = 0;
        while (count--) {
            cd_label.dkl_cksum[0] ^= *p++;
            cd_label.dkl_cksum[1] ^= *p++;
        }
        memcpy(buffer, &cd_label, 512);
    }
 
    xfwrite(buffer, SECTOR_SIZE, 1, outfile, 0, FALSE);
    last_extent_written++;
    return (0);
}

sunx86_boot_label()

EXPORT int sunx86_boot_label

(

char *

label

)

Definition at line 121 of file boot.c.

{
    strncpy(sx86_label.dkl_vtoc.v_asciilabel, label, 127);
    sx86_label.dkl_vtoc.v_asciilabel[127] = '\0';
    return (1);
}

Variable Documentation

boot_files

LOCAL char* boot_files[NDKMAP]

Definition at line 40 of file boot.c.

Referenced by make_sun_label(), scan_sparc_boot(), scan_sunx86_boot(), and sunboot_write().

cd_label

LOCAL struct sun_label cd_label

Definition at line 37 of file boot.c.

Referenced by dup_sun_label(), init_sparc_label(), make_sun_label(), scan_sparc_boot(), sparc_boot_label(), sunboot_write(), and sunlabel_write().

fdisk_part

LOCAL struct pc_part fdisk_part

Definition at line 39 of file boot.c.

Referenced by make_sunx86_label(), and sunlabel_write().

genboot_desc

struct output_fragment genboot_desc = {NULL, genboot_size, NULL, genboot_write, "Generic Boot" }

Definition at line 555 of file boot.c.

Referenced by main().

sccsid

UConst char sccsid[]

static

Initial value:

=
    "@(#)boot.c 1.28 16/10/23 Copyright 1999-2016 J. Schilling"

Definition at line 4 of file boot.c.

sunboot_desc

struct output_fragment sunboot_desc = {NULL, NULL, NULL, sunboot_write, "Sun Boot" }

Definition at line 553 of file boot.c.

Referenced by main().

sunlabel_desc

struct output_fragment sunlabel_desc = {NULL, sunlabel_size, NULL, sunlabel_write, "Sun Disk Label" }

Definition at line 554 of file boot.c.

Referenced by main().

sx86_label

LOCAL struct x86_label sx86_label

Definition at line 38 of file boot.c.

Referenced by init_sunx86_label(), make_sunx86_label(), scan_sunx86_boot(), sunboot_write(), sunlabel_write(), and sunx86_boot_label().

use_sunx86boot

int use_sunx86boot

extern

Definition at line 108 of file mkisofs.c.

Referenced by main(), scan_sparc_boot(), scan_sunx86_boot(), sunboot_write(), and sunlabel_write().