typedef uint_least32_t secaddr;
#define PRIuSEC PRIuLEAST32
+#define SECLIMIT 0x00400000
#define MAXFILES (1 + 2*99 + 1)
struct file {
return (0);
}
+#define PRF_HYPHEN 1u
+static int parse_range(const char *p, unsigned f,
+ secaddr *start_out, secaddr *end_out)
+{
+ char *q;
+ int err, rc;
+ unsigned long start, end;
+
+ err = errno;
+
+ if (ISDIGIT(*p)) {
+ start = strtoul(p, &q, 0);
+ if (errno || start >= SECLIMIT) { rc = -1; goto end; }
+ *start_out = start; p = q;
+ } else if (!(f&PRF_HYPHEN))
+ { rc = -1; goto end; }
+ else
+ start = 0;
+
+ if (f&PRF_HYPHEN) {
+ if (*p != '-') { rc = -1; goto end; }
+ p++;
+ } else {
+ if (!ISSPACE(*p)) { rc = -1; goto end; }
+ do p++; while (ISSPACE(*p));
+ }
+
+ if (ISDIGIT(*p)) {
+ end = strtoul(p, &q, 0);
+ if (errno || end > SECLIMIT || end < start) { rc = -1; goto end; }
+ *end_out = end; p = q;
+ } else if (!(f&PRF_HYPHEN))
+ { rc = -1; goto end; }
+
+ if (!(f&PRF_HYPHEN)) while (ISSPACE(*p)) p++;
+ if (*p) { rc = -1; goto end; }
+
+ rc = 0;
+end:
+ errno = err;
+ return (rc);
+}
+
int main(int argc, char *argv[])
{
unsigned f = 0;
uint64_t volsz;
secaddr pos;
off_t off;
- unsigned long start, end;
+ secaddr start, end;
const struct event *ev;
const char *device = "/dev/dvd", *outfile = 0;
int opt, blksz;
p = buf.p; i++;
while (ISSPACE(*p)) p++;
if (!*p || *p == '#') continue;
- if (!ISDIGIT(*p)) goto bad_range_file;
- start = strtoul(p, &p, 0);
- if (errno || !ISSPACE(*p)) goto bad_range_file;
- do p++; while (ISSPACE(*p));
- if (!ISDIGIT(*p)) goto bad_range_file;
- end = strtoul(p, &p, 0);
- if (errno || (*p && !ISSPACE(*p))) goto bad_range_file;
- while (ISSPACE(*p)) p++;
- if (*p) goto bad_range_file;
- if (start > end) goto bad_range_file;
+ if (parse_range(p, 0, &start, &end) ||
+ (last <= SECLIMIT && start < last))
+ bail("bad range `%s' at `%s' line %zu", buf.p, optarg, i);
if (start < end) {
put_event(EV_WRITE, 0, start);
put_event(EV_STOP, 0, end);
if (ferror(fp))
bail_syserr(errno, "failed to read ranges file `%s'", optarg);
break;
- bad_range_file:
- bail("bad range `%s' at `%s' line %zu", buf.p, optarg, i);
case 'b':
if (mapfile) bail("can't have multiple map files");
mapfile = optarg;
case 'c': f |= f_continue; break;
case 'o': outfile = optarg; break;
case 'r':
- err = errno; errno = 0;
- p = optarg;
- if (*p == '-')
- start = 0;
- else {
- if (!ISDIGIT(*p)) goto bad_range;
- start = strtoul(p, &p, 0);
- if (errno || *p != '-') goto bad_range;
- }
- p++;
- if (!*p)
+ start = 0; end = -1;
+ if (parse_range(optarg, PRF_HYPHEN, &start, &end))
+ bail("bad range `%s'", optarg);
+ if (start < end) {
put_event(EV_WRITE, 0, start);
- else {
- if (!ISDIGIT(*p)) goto bad_range;
- end = strtoul(p, &p, 0);
- if (errno || *p) goto bad_range;
- if (start > end) goto bad_range;
- if (start < end) {
- put_event(EV_WRITE, 0, start);
- put_event(EV_STOP, 0, end);
- }
+ if (end <= SECLIMIT) put_event(EV_STOP, 0, end);
}
- errno = err;
- break;
- bad_range:
- bail("bad range `%s'", optarg);
break;
default: f |= f_bogus; break;
}
switch (ev->ev) {
case EV_WRITE:
if (f&f_write)
- bail("overlapping ranges: range from %lu still open at %"PRIuSEC"",
+ bail("overlapping ranges: range from %"PRIuSEC" still open at %"PRIuSEC"",
start, ev->pos);
n++; f |= f_write; start = ev->pos;
break;