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NetBSD/usr.sbin/ndiscvt/ndiscvt.c

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C
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/*
* Copyright (c) 2003
* Bill Paul <wpaul@windriver.com>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifdef __FreeBSD__
__FBSDID("$FreeBSD: src/usr.sbin/ndiscvt/ndiscvt.c,v 1.9.2.2 2005/02/23 16:31:47 wpaul Exp $");
#endif
#ifdef __NetBSD__
__RCSID("$NetBSD: ndiscvt.c,v 1.12 2015/06/16 23:04:14 christos Exp $");
#endif
#include <sys/types.h>
#ifdef __NetBSD__
#include <sys/stdint.h>
#endif
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/lock.h>
#include <net/if.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <libgen.h>
#include <err.h>
#include <ctype.h>
#include <compat/ndis/pe_var.h>
#include "inf.h"
static int insert_padding(void **, int *);
extern const char *__progname;
/*
* Sections within Windows PE files are defined using virtual
* and physical address offsets and virtual and physical sizes.
* The physical values define how the section data is stored in
* the executable file while the virtual values describe how the
* sections will look once loaded into memory. It happens that
* the linker in the Microsoft(r) DDK will tend to generate
* binaries where the virtual and physical values are identical,
* which means in most cases we can just transfer the file
* directly to memory without any fixups. This is not always
* the case though, so we have to be prepared to handle files
* where the in-memory section layout differs from the disk file
* section layout.
*
* There are two kinds of variations that can occur: the relative
* virtual address of the section might be different from the
* physical file offset, and the virtual section size might be
* different from the physical size (for example, the physical
* size of the .data section might be 1024 bytes, but the virtual
* size might be 1384 bytes, indicating that the data section should
* actually use up 1384 bytes in RAM and be padded with zeros). What we
* do is read the original file into memory and then make an in-memory
* copy with all of the sections relocated, re-sized and zero padded
* according to the virtual values specified in the section headers.
* We then emit the fixed up image file for use by the if_ndis driver.
* This way, we don't have to do the fixups inside the kernel.
*/
#define ROUND_DOWN(n, align) (((uintptr_t)n) & ~((align) - 1l))
#define ROUND_UP(n, align) ROUND_DOWN(((uintptr_t)n) + (align) - 1l, \
(align))
#define SET_HDRS(x) \
dos_hdr = (image_dos_header *)x; \
nt_hdr = (image_nt_header *)(x + dos_hdr->idh_lfanew); \
sect_hdr = (image_section_header *)((vm_offset_t)nt_hdr + \
sizeof(image_nt_header));
static
int insert_padding(imgbase, imglen)
void **imgbase;
int *imglen;
{
image_section_header *sect_hdr;
image_dos_header *dos_hdr;
image_nt_header *nt_hdr;
image_optional_header opt_hdr;
int i = 0, sections;
int offaccum = 0, oldraddr, oldrlen;
uint8_t *newimg, *tmp;
newimg = malloc(*imglen);
if (newimg == NULL)
return(ENOMEM);
bcopy(*imgbase, newimg, *imglen);
if (pe_get_optional_header((vm_offset_t)newimg, &opt_hdr))
return(0);
sections = pe_numsections((vm_offset_t)newimg);
SET_HDRS(newimg);
for (i = 0; i < sections; i++) {
oldraddr = sect_hdr->ish_rawdataaddr;
oldrlen = sect_hdr->ish_rawdatasize;
sect_hdr->ish_rawdataaddr = sect_hdr->ish_vaddr;
offaccum += ROUND_UP(sect_hdr->ish_vaddr - oldraddr,
opt_hdr.ioh_filealign);
offaccum +=
ROUND_UP(sect_hdr->ish_misc.ish_vsize,
opt_hdr.ioh_filealign) -
ROUND_UP(sect_hdr->ish_rawdatasize,
opt_hdr.ioh_filealign);
tmp = realloc(newimg, *imglen + offaccum);
if (tmp == NULL) {
free(newimg);
return(ENOMEM);
}
newimg = tmp;
SET_HDRS(newimg);
sect_hdr += i;
bzero(newimg + sect_hdr->ish_rawdataaddr,
ROUND_UP(sect_hdr->ish_misc.ish_vsize,
opt_hdr.ioh_filealign));
bcopy((uint8_t *)(*imgbase) + oldraddr,
newimg + sect_hdr->ish_rawdataaddr, oldrlen);
sect_hdr++;
}
free(*imgbase);
*imgbase = newimg;
*imglen += offaccum;
return(0);
}
__dead static void
usage(void)
{
fprintf(stderr, "Usage: %s [-O] [-i <inffile>] -s <sysfile> "
"[-n devname] [-o outfile]\n", __progname);
fprintf(stderr, " %s -f <firmfile>\n", __progname);
exit(1);
}
static void
bincvt(char *sysfile, char *outfile, void *img, int fsize)
{
char *ptr;
char tname[] = "/tmp/ndiscvt.XXXXXX";
char sysbuf[1024];
FILE *binfp;
int fd;
fd = mkstemp(tname);
if (fd == -1)
err(1, "creating temp file %s failed", tname);
binfp = fdopen(fd, "a+");
if (binfp == NULL) {
unlink(tname);
err(1, "opening %s failed", tname);
}
if (fwrite(img, fsize, 1, binfp) != 1) {
unlink(tname);
err(1, "failed to output binary image");
}
fclose(binfp);
outfile = strdup(basename(outfile));
if (strchr(outfile, '.'))
*strchr(outfile, '.') = '\0';
snprintf(sysbuf, sizeof(sysbuf),
#ifdef __i386__
#ifdef __FreeBSD__
"objcopy -I binary -O elf32-i386-freebsd -B i386 %s %s.o\n",
#else
"objcopy -I binary -O elf32-i386 -B i386 %s %s.o\n",
#endif /* __FreeBSD__ */
#endif
#ifdef __amd64__
"objcopy -I binary -O elf64-x86-64 -B i386 %s %s.o\n",
#endif
tname, outfile);
printf("%s", sysbuf);
system(sysbuf);
unlink(tname);
ptr = tname;
while (*ptr) {
if (*ptr == '/' || *ptr == '.')
*ptr = '_';
ptr++;
}
snprintf(sysbuf, sizeof(sysbuf),
"objcopy --redefine-sym _binary_%s_start=%s_drv_data_start "
"--strip-symbol _binary_%s_size "
"--redefine-sym _binary_%s_end=%s_drv_data_end %s.o %s.o\n",
tname, sysfile, tname, tname, sysfile, outfile, outfile);
printf("%s", sysbuf);
system(sysbuf);
free(outfile);
return;
}
__dead static void
firmcvt(char *firmfile)
{
char *basefile, *outfile, *ptr;
char sysbuf[1024];
outfile = strdup(basename(firmfile));
basefile = strdup(outfile);
snprintf(sysbuf, sizeof(sysbuf),
#ifdef __i386__
#ifdef __FreeBSD__
"objcopy -I binary -O elf32-i386-freebsd -B i386 %s %s.o\n",
#else
"objcopy -I binary -O elf32-i386 -B i386 %s %s.o\n",
#endif /* __FreeBSD__ */
#endif
#ifdef __amd64__
"objcopy -I binary -O elf64-x86-64 -B i386 %s %s.o\n",
#endif
firmfile, outfile);
printf("%s", sysbuf);
system(sysbuf);
ptr = firmfile;
while (*ptr) {
if (*ptr == '/' || *ptr == '.')
*ptr = '_';
ptr++;
}
ptr = basefile;
while (*ptr) {
if (*ptr == '/' || *ptr == '.')
*ptr = '_';
else
*ptr = tolower((int)*ptr);
ptr++;
}
snprintf(sysbuf, sizeof(sysbuf),
"objcopy --redefine-sym _binary_%s_start=%s_start "
"--strip-symbol _binary_%s_size "
"--redefine-sym _binary_%s_end=%s_end %s.o %s.o\n",
firmfile, basefile, firmfile, firmfile,
basefile, outfile, outfile);
ptr = sysbuf;
printf("%s", sysbuf);
system(sysbuf);
snprintf(sysbuf, sizeof(sysbuf),
"ld -Bshareable -d -warn-common -o %s.ko %s.o\n",
outfile, outfile);
printf("%s", sysbuf);
system(sysbuf);
free(basefile);
exit(0);
}
int
main(int argc, char *argv[])
{
FILE *fp, *outfp;
int i, bin = 0;
void *img;
int n, fsize, cnt;
char *ptr;
char *inffile = NULL, *sysfile = NULL;
char *outfile = NULL, *firmfile = NULL;
char *dname = NULL;
int ch;
while((ch = getopt(argc, argv, "i:s:o:n:f:O")) != -1) {
switch(ch) {
case 'f':
firmfile = optarg;
break;
case 'i':
inffile = optarg;
break;
case 's':
sysfile = optarg;
break;
case 'o':
outfile = optarg;
break;
case 'n':
dname = optarg;
break;
case 'O':
bin = 1;
break;
default:
usage();
break;
}
}
if (firmfile != NULL)
firmcvt(firmfile);
if (sysfile == NULL)
usage();
/* Open the .SYS file and load it into memory */
fp = fopen(sysfile, "r");
if (fp == NULL)
err(1, "opening .SYS file '%s' failed", sysfile);
fseek (fp, 0L, SEEK_END);
fsize = ftell (fp);
if (fsize == -1)
err(1, "getting size of .SYS file '%s' failed", sysfile);
rewind (fp);
img = malloc(fsize);
n = fread (img, fsize, 1, fp);
if (n < 1)
err(1, "reading .SYS file '%s' failed", sysfile);
fclose(fp);
fp = NULL;
if (insert_padding(&img, &fsize)) {
errx(1, "section relocation failed");
}
if (outfile == NULL || strcmp(outfile, "-") == 0)
outfp = stdout;
else {
outfp = fopen(outfile, "w");
if (outfp == NULL)
err(1, "opening output file '%s' failed", outfile);
}
fprintf(outfp, "\n/*\n");
fprintf(outfp, " * Generated from %s and %s (%d bytes)\n",
inffile == NULL ? "<notused>" : inffile, sysfile, fsize);
fprintf(outfp, " */\n\n");
if (dname != NULL) {
if (strlen(dname) > IFNAMSIZ)
err(1, "selected device name '%s' is "
"too long (max chars: %d)", dname, IFNAMSIZ);
fprintf (outfp, "#define NDIS_DEVNAME \"%s\"\n", dname);
fprintf (outfp, "#define NDIS_MODNAME %s\n\n", dname);
}
if (inffile == NULL) {
fprintf (outfp, "#ifdef NDIS_REGVALS\n");
fprintf (outfp, "ndis_cfg ndis_regvals[] = {\n");
fprintf (outfp, "\t{ NULL, NULL, { 0 }, 0 }\n");
fprintf (outfp, "#endif /* NDIS_REGVALS */\n");
fprintf (outfp, "};\n\n");
} else {
fp = fopen(inffile, "r");
if (fp == NULL)
err(1, "opening .INF file '%s' failed", inffile);
inf_parse(fp, outfp);
fclose(fp);
fp = NULL;
}
fprintf(outfp, "\n#ifdef NDIS_IMAGE\n");
if (bin) {
sysfile = strdup(basename(sysfile));
ptr = sysfile;
while (*ptr) {
if (*ptr == '.')
*ptr = '_';
ptr++;
}
fprintf(outfp,
"\nextern unsigned char %s_drv_data_start[];\n",
sysfile);
fprintf(outfp, "static unsigned char *drv_data = "
"%s_drv_data_start;\n\n", sysfile);
bincvt(sysfile, outfile, img, fsize);
goto done;
}
fprintf(outfp, "\nextern unsigned char drv_data[];\n\n");
fprintf(outfp, "__asm__(\".data\");\n");
fprintf(outfp, "__asm__(\".globl drv_data\");\n");
fprintf(outfp, "__asm__(\".type drv_data, @object\");\n");
fprintf(outfp, "__asm__(\".size drv_data, %d\");\n", fsize);
fprintf(outfp, "__asm__(\"drv_data:\");\n");
ptr = img;
cnt = 0;
while(cnt < fsize) {
fprintf (outfp, "__asm__(\".byte ");
for (i = 0; i < 10; i++) {
cnt++;
if (cnt == fsize) {
fprintf(outfp, "0x%.2X\");\n", ptr[i]);
goto done;
} else {
if (i == 9)
fprintf(outfp, "0x%.2X\");\n", ptr[i]);
else
fprintf(outfp, "0x%.2X, ", ptr[i]);
}
}
ptr += 10;
}
done:
fprintf(outfp, "#endif /* NDIS_IMAGE */\n");
if (fp != NULL)
fclose(fp);
fclose(outfp);
free(img);
exit(0);
}
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