static bool
decode_signed_num (intmax_t *num, char const *arg,
intmax_t minval, uintmax_t maxval,
char const *keyword)
{
char *arg_lim;
intmax_t u = strtosysint (arg, &arg_lim, minval, maxval);
if (errno == EINVAL || *arg_lim)
{
ERROR ((0, 0, _("Malformed extended header: invalid %s=%s"),
keyword, arg));
return false;
}
if (errno == ERANGE)
{
out_of_range_header (keyword, arg, minval, maxval);
return false;
}
*num = u;
return true;
}
/* Read incremental snapshot formats 0 and 1 */
static void
read_incr_db_01 (int version, const char *initbuf)
{
int n;
uintmax_t u;
char *buf = NULL;
size_t bufsize = 0;
char *ebuf;
long lineno = 1;
if (version == 1)
{
if (getline (&buf, &bufsize, listed_incremental_stream) <= 0)
{
read_error (listed_incremental_option);
free (buf);
return;
}
++lineno;
}
else
{
buf = strdup (initbuf);
bufsize = strlen (buf) + 1;
}
newer_mtime_option = decode_timespec (buf, &ebuf, false);
if (! valid_timespec (newer_mtime_option))
ERROR ((0, errno, "%s:%ld: %s",
quotearg_colon (listed_incremental_option),
lineno,
_("Invalid time stamp")));
else
{
if (version == 1 && *ebuf)
{
char const *buf_ns = ebuf + 1;
errno = 0;
u = strtoumax (buf_ns, &ebuf, 10);
if (!errno && BILLION <= u)
errno = ERANGE;
if (errno || buf_ns == ebuf)
{
ERROR ((0, errno, "%s:%ld: %s",
quotearg_colon (listed_incremental_option),
lineno,
_("Invalid time stamp")));
newer_mtime_option.tv_sec = TYPE_MINIMUM (time_t);
newer_mtime_option.tv_nsec = -1;
}
else
newer_mtime_option.tv_nsec = u;
}
}
while (0 < (n = getline (&buf, &bufsize, listed_incremental_stream)))
{
dev_t dev;
ino_t ino;
bool nfs = buf[0] == '+';
char *strp = buf + nfs;
struct timespec mtime;
lineno++;
if (buf[n - 1] == '\n')
buf[n - 1] = '\0';
if (version == 1)
{
mtime = decode_timespec (strp, &ebuf, false);
strp = ebuf;
if (!valid_timespec (mtime) || *strp != ' ')
ERROR ((0, errno, "%s:%ld: %s",
quotearg_colon (listed_incremental_option), lineno,
_("Invalid modification time")));
errno = 0;
u = strtoumax (strp, &ebuf, 10);
if (!errno && BILLION <= u)
errno = ERANGE;
if (errno || strp == ebuf || *ebuf != ' ')
{
ERROR ((0, errno, "%s:%ld: %s",
quotearg_colon (listed_incremental_option), lineno,
_("Invalid modification time (nanoseconds)")));
mtime.tv_nsec = -1;
}
else
mtime.tv_nsec = u;
strp = ebuf;
}
else
mtime.tv_sec = mtime.tv_nsec = 0;
dev = strtosysint (strp, &ebuf,
TYPE_MINIMUM (dev_t), TYPE_MAXIMUM (dev_t));
strp = ebuf;
if (errno || *strp != ' ')
ERROR ((0, errno, "%s:%ld: %s",
quotearg_colon (listed_incremental_option), lineno,
_("Invalid device number")));
ino = strtosysint (strp, &ebuf,
TYPE_MINIMUM (ino_t), TYPE_MAXIMUM (ino_t));
strp = ebuf;
if (errno || *strp != ' ')
ERROR ((0, errno, "%s:%ld: %s",
quotearg_colon (listed_incremental_option), lineno,
_("Invalid inode number")));
strp++;
unquote_string (strp);
note_directory (strp, mtime, dev, ino, nfs, false, NULL);
}
free (buf);
}
static bool
read_num (FILE *fp, char const *fieldname,
intmax_t min_val, uintmax_t max_val, intmax_t *pval)
{
int i;
char buf[INT_BUFSIZE_BOUND (intmax_t)];
char offbuf[INT_BUFSIZE_BOUND (off_t)];
char minbuf[INT_BUFSIZE_BOUND (intmax_t)];
char maxbuf[INT_BUFSIZE_BOUND (intmax_t)];
int conversion_errno;
int c = getc (fp);
bool negative = c == '-';
for (i = 0; (i == 0 && negative) || ISDIGIT (c); i++)
{
buf[i] = c;
if (i == sizeof buf - 1)
FATAL_ERROR ((0, 0,
_("%s: byte %s: %s %.*s... too long"),
quotearg_colon (listed_incremental_option),
offtostr (ftello (fp), offbuf),
fieldname, i + 1, buf));
c = getc (fp);
}
buf[i] = 0;
if (c < 0)
{
if (ferror (fp))
read_fatal (listed_incremental_option);
if (i != 0)
FATAL_ERROR ((0, 0, "%s: %s",
quotearg_colon (listed_incremental_option),
_("Unexpected EOF in snapshot file")));
return false;
}
if (c)
{
unsigned uc = c;
FATAL_ERROR ((0, 0,
_("%s: byte %s: %s %s followed by invalid byte 0x%02x"),
quotearg_colon (listed_incremental_option),
offtostr (ftello (fp), offbuf),
fieldname, buf, uc));
}
*pval = strtosysint (buf, NULL, min_val, max_val);
conversion_errno = errno;
switch (conversion_errno)
{
case ERANGE:
FATAL_ERROR ((0, conversion_errno,
_("%s: byte %s: (valid range %s..%s)\n\t%s %s"),
quotearg_colon (listed_incremental_option),
offtostr (ftello (fp), offbuf),
imaxtostr (min_val, minbuf),
umaxtostr (max_val, maxbuf), fieldname, buf));
default:
FATAL_ERROR ((0, conversion_errno,
_("%s: byte %s: %s %s"),
quotearg_colon (listed_incremental_option),
offtostr (ftello (fp), offbuf), fieldname, buf));
case 0:
break;
}
return true;
}
