int64_t
ext_minimum_size (const char *device)
{
CLEANUP_FREE char *err = NULL, *out = NULL;
CLEANUP_FREE_STRING_LIST char **lines = NULL;
int r;
size_t i;
int64_t ret;
long block_size;
const char *pattern = "Estimated minimum size of the filesystem: ";
r = command (&out, &err, str_resize2fs, "-P", "-f", device, NULL);
if (r == -1) {
reply_with_error ("%s", err);
return -1;
}
lines = split_lines (out);
if (lines == NULL)
return -1;
#if __WORDSIZE == 64
#define XSTRTOD64 xstrtol
#else
#define XSTRTOD64 xstrtoll
#endif
for (i = 0; lines[i] != NULL; ++i) {
if (STRPREFIX (lines[i], pattern)) {
if (XSTRTOD64 (lines[i] + strlen (pattern),
NULL, 10, &ret, NULL) != LONGINT_OK) {
reply_with_error ("cannot parse minimum size");
return -1;
}
if ((block_size = get_block_size (device)) == -1)
return -1;
if (verbose) {
fprintf (stderr, "Minimum size in blocks: %" SCNd64 \
"\nBlock count: %ld\n", ret, block_size);
}
if (INT64_MAX / block_size < ret) {
reply_with_error ("filesystem size too big: overflow");
return -1;
}
return ret * block_size;
}
}
#undef XSTRTOD64
reply_with_error ("minimum size not found. Check output format:\n%s", out);
return -1;
}
int64_t
ntfs_minimum_size (const char *device)
{
CLEANUP_FREE char *err = NULL, *out = NULL;
CLEANUP_FREE_STRING_LIST char **lines = NULL;
int r;
size_t i;
int64_t volume_size = 0;
const char *size_pattern = "You might resize at ",
*full_pattern = "Volume is full",
*cluster_size_pattern = "Cluster size",
*volume_size_pattern = "Current volume size:";
int is_full = 0;
int32_t cluster_size = 0;
/* FS may be marked for check, so force ntfsresize */
r = command (&out, &err, str_ntfsresize, "--info", "-ff", device, NULL);
lines = split_lines (out);
if (lines == NULL)
return -1;
if (verbose) {
for (i = 0; lines[i] != NULL; ++i)
fprintf (stderr, "ntfs_minimum_size: lines[%zu] = \"%s\"\n", i, lines[i]);
}
#if __WORDSIZE == 64
#define XSTRTOD64 xstrtol
#else
#define XSTRTOD64 xstrtoll
#endif
if (r == -1) {
/* If volume is full, ntfsresize returns error. */
for (i = 0; lines[i] != NULL; ++i) {
if (strstr (lines[i], full_pattern))
is_full = 1;
else if (STRPREFIX (lines[i], cluster_size_pattern)) {
if (sscanf (lines[i] + strlen (cluster_size_pattern),
"%*[ ]:%" SCNd32, &cluster_size) != 1) {
reply_with_error ("cannot parse cluster size");
return -1;
}
}
else if (STRPREFIX (lines[i], volume_size_pattern)) {
if (XSTRTOD64 (lines[i] + strlen (volume_size_pattern),
NULL, 10, &volume_size, NULL) != LONGINT_OK) {
reply_with_error ("cannot parse volume size");
return -1;
}
}
}
if (is_full) {
if (cluster_size == 0) {
reply_with_error ("bad cluster size");
return -1;
}
/* In case of a full filesystem, we estimate minimum size
* as volume size rounded up to cluster size.
*/
return (volume_size + cluster_size - 1) / cluster_size * cluster_size;
}
reply_with_error ("%s", err);
return -1;
}
for (i = 0; lines[i] != NULL; ++i) {
if (STRPREFIX (lines[i], size_pattern)) {
int64_t ret;
if (XSTRTOD64 (lines[i] + strlen (size_pattern),
NULL, 10, &ret, NULL) != LONGINT_OK) {
reply_with_error ("cannot parse minimum size");
return -1;
}
return ret;
}
}
#undef XSTRTOD64
reply_with_error ("minimum size not found. Check output format:\n%s", out);
return -1;
}
