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head/sbin/dumpon/dumpon.c

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#endif #endif
static int verbose; static int verbose;
static void static void
usage(void) usage(void)
{ {
fprintf(stderr, "%s\n%s\n%s\n", fprintf(stderr, "%s\n%s\n%s\n",
"usage: dumpon [-v] [-k public_key_file] special_file", "usage: dumpon [-v] [-k public_key_file] [-z] special_file",
" dumpon [-v] off", " dumpon [-v] off",
" dumpon [-v] -l"); " dumpon [-v] -l");
exit(EX_USAGE); exit(EX_USAGE);
} }
static void static void
check_size(int fd, const char *fn) check_size(int fd, const char *fn)
{ {
▲ Show 20 Lines • Show All 102 Lines • ▼ Show 20 Lines
int int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
struct diocskerneldump_arg kda; struct diocskerneldump_arg kda;
const char *pubkeyfile; const char *pubkeyfile;
int ch; int ch;
int i, fd; int i, fd;
int do_listdumpdev = 0; int do_listdumpdev = 0;
bool enable; bool enable, gzip;
gzip = false;
pubkeyfile = NULL; pubkeyfile = NULL;
while ((ch = getopt(argc, argv, "k:lv")) != -1) while ((ch = getopt(argc, argv, "k:lvz")) != -1)
switch((char)ch) { switch((char)ch) {
case 'k': case 'k':
pubkeyfile = optarg; pubkeyfile = optarg;
break; break;
case 'l': case 'l':
do_listdumpdev = 1; do_listdumpdev = 1;
break; break;
case 'v': case 'v':
verbose = 1; verbose = 1;
break; break;
case 'z':
gzip = true;
break;
default: default:
usage(); usage();
} }
argc -= optind; argc -= optind;
argv += optind; argv += optind;
if (do_listdumpdev) { if (do_listdumpdev) {
Show All 26 Lines if (strncmp(argv[0], _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) {
errno = EINVAL; errno = EINVAL;
err(EX_DATAERR, "%s", argv[0]); err(EX_DATAERR, "%s", argv[0]);
} }
dumpdev = tmp; dumpdev = tmp;
} }
fd = open(dumpdev, O_RDONLY); fd = open(dumpdev, O_RDONLY);
if (fd < 0) if (fd < 0)
err(EX_OSFILE, "%s", dumpdev); err(EX_OSFILE, "%s", dumpdev);
if (!gzip)
check_size(fd, dumpdev); check_size(fd, dumpdev);
bzero(&kda, sizeof(kda));
bzero(&kda, sizeof(kda));
kda.kda_enable = 0; kda.kda_enable = 0;
i = ioctl(fd, DIOCSKERNELDUMP, &kda); i = ioctl(fd, DIOCSKERNELDUMP, &kda);
explicit_bzero(&kda, sizeof(kda)); explicit_bzero(&kda, sizeof(kda));
#ifdef HAVE_CRYPTO #ifdef HAVE_CRYPTO
if (pubkeyfile != NULL) if (pubkeyfile != NULL)
genkey(pubkeyfile, &kda); genkey(pubkeyfile, &kda);
#endif #endif
kda.kda_enable = 1; kda.kda_enable = 1;
kda.kda_compression = gzip ? KERNELDUMP_COMP_GZIP :
KERNELDUMP_COMP_NONE;
i = ioctl(fd, DIOCSKERNELDUMP, &kda); i = ioctl(fd, DIOCSKERNELDUMP, &kda);
explicit_bzero(kda.kda_encryptedkey, kda.kda_encryptedkeysize); explicit_bzero(kda.kda_encryptedkey, kda.kda_encryptedkeysize);
free(kda.kda_encryptedkey); free(kda.kda_encryptedkey);
explicit_bzero(&kda, sizeof(kda)); explicit_bzero(&kda, sizeof(kda));
if (i == 0 && verbose) if (i == 0 && verbose)
printf("kernel dumps on %s\n", dumpdev); printf("kernel dumps on %s\n", dumpdev);
} else { } else {
fd = open(_PATH_DEVNULL, O_RDONLY); fd = open(_PATH_DEVNULL, O_RDONLY);
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