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void make_image(char *image, char **procv)
/* Collect a set of files in an image, each "segment" is nicely padded out
* to SECTOR_SIZE, so it may be read from disk into memory without trickery.
*/
{
FILE *imagef, *procf;
char *proc, *file;
int procn;
struct image_header ihdr;
struct exec phdr;
struct stat st;
making_image= 1;
if ((imagef= fopen(image, "w")) == nil) {
fatal(image);
}
for (procn= 0; (proc= *procv++) != nil; procn++) {
/* Remove the label from the file name. */
if ((file= strchr(proc, ':')) != nil)
file++;
else
file= proc;
/* Real files please, may need to seek. */
if (stat(file, &st) < 0
|| (errno= EISDIR, !S_ISREG(st.st_mode))
|| (procf= fopen(file, "r")) == nil
) fatal(proc);
/* Read a.out header. */
read_header(1, proc, procf, &ihdr);
/* Scratch. */
phdr= ihdr.process;
/* The symbol table is always stripped off. */
ihdr.process.a_syms= 0;
ihdr.process.a_flags &= ~A_NSYM;
/* Write header padded to fill a sector */
bwrite(imagef, image, &ihdr, sizeof(ihdr));
padimage(image, imagef, SECTOR_SIZE - sizeof(ihdr));
/* A page aligned executable needs the header in text. */
if (phdr.a_flags & A_PAL) {
rewind(procf);
phdr.a_text+= phdr.a_hdrlen;
}
/* Copy text and data of proc to image. */
if (phdr.a_flags & A_SEP) {
/* Separate I&D: pad text & data separately. */
copyexec(proc, procf, image, imagef, phdr.a_text);
copyexec(proc, procf, image, imagef, phdr.a_data);
} else {
/* Common I&D: keep text and data together. */
copyexec(proc, procf, image, imagef,
phdr.a_text + phdr.a_data);
}
/* Done with proc. */
(void) fclose(procf);
}
/* Done with image. */
if (fclose(imagef) == EOF) fatal(image);
printf(" ------ ------ ------ -------\n");
printf("%8ld%8ld%8ld%9ld total\n",
total_text, total_data, total_bss,
total_text + total_data + total_bss);
}
