void
rebootcmd(int argc, char *argv[])
{
Chan *c;
Exec exec;
Execvals ev;
ulong magic, text, rtext, entry, data, size;
uchar *p;
if(argc == 0)
exit(0);
c = namec(argv[0], Aopen, OEXEC, 0);
if(waserror()){
cclose(c);
nexterror();
}
readn(c, &exec, sizeof(Exec));
magic = l2be(exec.magic);
/*
* AOUT_MAGIC is sometimes defined like this:
* #define AOUT_MAGIC V_MAGIC || magic==M_MAGIC
* so we can only use it in a fairly stylized manner.
*/
if(magic == AOUT_MAGIC) {
entry = l2be(exec.entry);
text = l2be(exec.text);
data = l2be(exec.data);
} else if(parseboothdr && (*parseboothdr)(c, magic, &ev) >= 0 ||
readelfhdr(c, magic, &ev) >= 0 ||
readelf64hdr(c, magic, &ev) >= 0){
entry = ev.entry;
text = ev.textsize;
data = ev.datasize;
} else {
error(Ebadexec);
return; /* for the compiler */
}
/* round text out to page boundary */
rtext = ROUNDUP(entry+text, BY2PG) - entry;
size = rtext + data;
p = malloc(size);
if(p == nil)
error(Enomem);
if(waserror()){
free(p);
nexterror();
}
memset(p, 0, size);
readn(c, p, text);
readn(c, p + rtext, data);
ksetenv("bootfile", argv[0], 1);
setbootcmd(argc-1, argv+1);
reboot((void*)entry, p, size);
panic("return from reboot!");
}
/* main().
*/
int main(int argc, char *argv[])
{
textline *lines = NULL;
char **arg;
int ret = 0;
int count, i;
readoptions(argc, argv);
if (optind == argc) {
err("nothing to do.");
exit(EXIT_FAILURE);
}
for (arg = argv + optind ; (thefilename = *arg) != NULL ; ++arg) {
if (!(thefile = fopen(thefilename, "rb"))) {
perror(thefilename);
++ret;
continue;
}
if (!readelfhdr() || !readproghdrs() || !readsecthdrs()) {
fclose(thefile);
++ret;
continue;
}
describeehdr(stdout);
if (ldepls && proghdrs) {
if ((count = getlibraries(&lines))) {
outputlist(stdout, lines, count, "Dependencies: ");
free(lines);
}
}
if (srcfls && secthdrs) {
if ((count = getsrcfiles(&lines))) {
qsort(lines, count, sizeof *lines, linesorter);
outputlist(stdout, lines, count, "Source files: ");
free(lines);
}
}
makenumberfmts();
if (phdrls && proghdrs) {
printf("Program header table entries: %d", elffhdr.e_phnum);
if (dooffs)
printf(" (%lX - %lX)",
(unsigned long)elffhdr.e_phoff,
(unsigned long)elffhdr.e_phoff +
elffhdr.e_phnum * elffhdr.e_phentsize);
putchar('\n');
lines = gettextlines(elffhdr.e_phnum);
for (i = 0 ; i < elffhdr.e_phnum ; ++i) {
append(lines + i, "%2d ", i);
describephdr(lines + i, proghdr + i);
}
formatlist(stdout, lines, elffhdr.e_phnum);
free(lines);
}
if (shdrls && secthdrs) {
printf("Section header table entries: %d", elffhdr.e_shnum);
if (dooffs)
printf(" (%lX - %lX)",
(unsigned long)elffhdr.e_shoff,
(unsigned long)elffhdr.e_shoff +
elffhdr.e_shnum * elffhdr.e_shentsize);
putchar('\n');
lines = gettextlines(elffhdr.e_shnum);
for (i = 0 ; i < elffhdr.e_shnum ; ++i) {
append(lines + i, "%2d ", i);
describeshdr(lines + i, secthdr + i);
}
formatlist(stdout, lines, elffhdr.e_shnum);
free(lines);
}
fclose(thefile);
free(proghdr);
free(secthdr);
free(sectstr);
}
return ret;
}
