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Improved drive capacity estimation for sparse regular files

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This commit is contained in:
Thomas Schmitt 2014-06-10 07:37:40 +00:00
parent b9d52d07e9
commit 8e0db7c63e
13 changed files with 78 additions and 26 deletions
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2
libburn/trunk/cdrskin/cdrskin_timestamp.h
View File

@ -1 +1 @@
#define Cdrskin_timestamP "2014.05.03.103448"
#define Cdrskin_timestamP "2014.06.09.183251"

23
libburn/trunk/libburn/drive.c
View File

@ -393,7 +393,7 @@ static int burn_drive__is_rdwr(char *fname, int *stat_ret,
if (S_ISREG(stbuf.st_mode))
read_size = stbuf.st_size;
else if (is_rdwr)
ret = burn_os_stdio_capacity(fname, &read_size);
ret = burn_os_stdio_capacity(fname, 0, &read_size);
if (ret <= 0 ||
read_size / (off_t) 2048 >= (off_t) 0x7ffffff0)
read_size = (off_t) 0x7ffffff0 * (off_t) 2048;
@ -450,7 +450,7 @@ int burn_drive_grab_stdio(struct burn_drive *d, int flag)
d->media_read_capacity =
read_size / 2048 - !(read_size % 2048);
if ((stat_ret == -1 || is_rdwr) && d->devname[0]) {
ret = burn_os_stdio_capacity(d->devname, &size);
ret = burn_os_stdio_capacity(d->devname, 0, &size);
if (ret > 0)
burn_drive_set_media_capacity_remaining(d,
size);
@ -1722,7 +1722,7 @@ int burn_drive_grab_dummy(struct burn_drive_info *drive_infos[], char *fname)
is_rdwr = burn_drive__is_rdwr(fname, &stat_ret, &stbuf,
&read_size, 1 | 2);
if (stat_ret == -1 || is_rdwr) {
ret = burn_os_stdio_capacity(fname, &size);
ret = burn_os_stdio_capacity(fname, 0, &size);
if (ret == -1) {
libdax_msgs_submit(libdax_messenger, -1,
0x00020009,
@ -2637,7 +2637,8 @@ int burn_disc_get_msc1(struct burn_drive *d, int *start)
off_t burn_disc_available_space(struct burn_drive *d,
struct burn_write_opts *o)
{
int lba, nwa;
int lba, nwa, ret;
off_t bytes;
if (burn_drive_is_released(d))
return 0;
@ -2646,9 +2647,13 @@ off_t burn_disc_available_space(struct burn_drive *d,
if (d->drive_role == 0)
return 0;
if (d->drive_role != 1) {
if (d->media_capacity_remaining <= 0)
burn_drive_set_media_capacity_remaining(d,
(off_t) (512 * 1024 * 1024 - 1) * (off_t) 2048);
ret = burn_os_stdio_capacity(d->devname, o->start_byte, &bytes);
if (ret != 1)
bytes = d->media_capacity_remaining;
if (bytes <= 0)
bytes = (off_t) (512 * 1024 * 1024 - 1) * (off_t) 2048;
if (bytes != d->media_capacity_remaining)
burn_drive_set_media_capacity_remaining(d, bytes);
} else {
if (o != NULL)
d->send_write_parameters(d, NULL, -1, o);
@ -2897,7 +2902,7 @@ int burn_disc_get_multi_caps(struct burn_drive *d, enum burn_write_types wt,
/* stdio file drive : random access read-write */
o->start_adr = 1;
size = d->media_capacity_remaining;
burn_os_stdio_capacity(d->devname, &size);
burn_os_stdio_capacity(d->devname, 0, &size);
burn_drive_set_media_capacity_remaining(d, size);
o->start_range_high = d->media_capacity_remaining;
o->start_alignment = 2048; /* imposting a drive, not a file */
@ -2909,7 +2914,7 @@ int burn_disc_get_multi_caps(struct burn_drive *d, enum burn_write_types wt,
/* stdio file drive : random access write-only */
o->start_adr = 1;
size = d->media_capacity_remaining;
burn_os_stdio_capacity(d->devname, &size);
burn_os_stdio_capacity(d->devname, 0, &size);
burn_drive_set_media_capacity_remaining(d, size);
/* >>> start_range_low = file size rounded to 2048 */;

2
libburn/trunk/libburn/libburn.h
View File

@ -1478,7 +1478,7 @@ int burn_disc_get_msc1(struct burn_drive *d, int *start_lba);
grabbed and BURN_DRIVE_IDLE. If not, then one will only get a canned value
from the most recent automatic inquiry (e.g. during last drive grabbing).
An eventual start address from burn_write_opts_set_start_byte() will be
subtracted from the obtained capacity estimation. Negative results get
taken into respect with the capacity estimation. Negative results get
defaulted to 0.
If the drive is actually a file in a large filesystem or a large block
device, then the capacity is curbed to a maximum of 0x7ffffff0 blocks

4
libburn/trunk/libburn/sg-dummy.c
View File

@ -244,7 +244,7 @@ int burn_os_is_2k_seekrw(char *path, int flag)
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
int burn_os_stdio_capacity(char *path, off_t write_start, off_t *bytes)
{
struct stat stbuf;
@ -289,7 +289,7 @@ int burn_os_stdio_capacity(char *path, off_t *bytes)
#endif /* Libburn_if_this_was_linuX */
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
add_size = burn_sparse_file_addsize(write_start, &stbuf);
strcpy(testpath, path);
} else
{ret = 0; goto ex;}

4
libburn/trunk/libburn/sg-freebsd-port.c
View File

@ -716,7 +716,7 @@ int burn_os_is_2k_seekrw(char *path, int flag)
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
int burn_os_stdio_capacity(char *path, off_t write_start, off_t *bytes)
{
struct stat stbuf;
struct statvfs vfsbuf;
@ -769,7 +769,7 @@ int burn_os_stdio_capacity(char *path, off_t *bytes)
{ret = -2; goto ex;}
*bytes = add_size;
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
add_size = burn_sparse_file_addsize(write_start, &stbuf);
strcpy(testpath, path);
} else
{ret = 0; goto ex;}

4
libburn/trunk/libburn/sg-freebsd.c
View File

@ -1051,7 +1051,7 @@ int burn_os_is_2k_seekrw(char *path, int flag)
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
int burn_os_stdio_capacity(char *path, off_t write_start, off_t *bytes)
{
struct stat stbuf;
struct statvfs vfsbuf;
@ -1104,7 +1104,7 @@ int burn_os_stdio_capacity(char *path, off_t *bytes)
{ret = -2; goto ex;}
*bytes = add_size;
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
add_size = burn_sparse_file_addsize(write_start, &stbuf);
strcpy(testpath, path);
} else
{ret = 0; goto ex;}

4
libburn/trunk/libburn/sg-libcdio.c
View File

@ -865,7 +865,7 @@ int burn_os_is_2k_seekrw(char *path, int flag)
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
int burn_os_stdio_capacity(char *path, off_t write_start, off_t *bytes)
{
struct stat stbuf;
@ -944,7 +944,7 @@ int burn_os_stdio_capacity(char *path, off_t *bytes)
#endif /* Libburn_is_on_solariS */
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
add_size = burn_sparse_file_addsize(write_start, &stbuf);
strcpy(testpath, path);
} else
{ret = 0; goto ex;}

22
libburn/trunk/libburn/sg-linux.c
View File

@ -2169,6 +2169,24 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
c->end_time = burn_get_time(0);
/*
# de fine Libburn_ff_netbsd_mockuP
*/
#ifdef Libburn_ff_netbsd_mockuP
if (c->opcode[0] == 0x5a) {
sprintf(msg, "Libburn_ff_netbsd_mockuP : Emulating zero reply from SCSI command 5A");
if (burn_sg_log_scsi & 3)
scsi_log_message(d, fp, msg, 0);
libdax_msgs_submit(libdax_messenger,
d->global_index, 0x00000002,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
msg, 0, 0);
memset(c->page->data, 0, c->page->bytes);
c->error = 1;
c->dxfer_len = 0;
}
#endif
/* ts A61010 */
/* a ssert(err != -1); */
if (err == -1) {
@ -2353,7 +2371,7 @@ int burn_os_is_2k_seekrw(char *path, int flag)
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
int burn_os_stdio_capacity(char *path, off_t write_start, off_t *bytes)
{
struct stat stbuf;
struct statvfs vfsbuf;
@ -2386,7 +2404,7 @@ int burn_os_stdio_capacity(char *path, off_t *bytes)
{ret = -2; goto ex;}
*bytes = ((off_t) blocks) * (off_t) 512;
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
add_size = burn_sparse_file_addsize(write_start, &stbuf);
strcpy(testpath, path);
} else
{ret = 0; goto ex;}

4
libburn/trunk/libburn/sg-netbsd.c
View File

@ -787,7 +787,7 @@ int burn_os_is_2k_seekrw(char *path, int flag)
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
int burn_os_stdio_capacity(char *path, off_t write_start, off_t *bytes)
{
struct stat stbuf;
int ret;
@ -830,7 +830,7 @@ int burn_os_stdio_capacity(char *path, off_t *bytes)
}
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
add_size = burn_sparse_file_addsize(write_start, &stbuf);
strcpy(testpath, path);
} else
{ret = 0; goto ex;}

4
libburn/trunk/libburn/sg-solaris.c
View File

@ -785,7 +785,7 @@ int burn_os_is_2k_seekrw(char *path, int flag)
0 = could not estimate size capacity of file object
1 = estimation has been made, bytes was set
*/
int burn_os_stdio_capacity(char *path, off_t *bytes)
int burn_os_stdio_capacity(char *path, off_t write_start, off_t *bytes)
{
struct stat stbuf;
int ret;
@ -826,7 +826,7 @@ int burn_os_stdio_capacity(char *path, off_t *bytes)
}
} else if(S_ISREG(stbuf.st_mode)) {
add_size = stbuf.st_blocks * (off_t) 512;
add_size = burn_sparse_file_addsize(write_start, &stbuf);
strcpy(testpath, path);
} else
{ret = 0; goto ex;}

2
libburn/trunk/libburn/sg.h
View File

@ -36,7 +36,7 @@ int sg_drive_is_open(struct burn_drive * d);
int burn_os_is_2k_seekrw(char *path, int flag);
int burn_os_stdio_capacity(char *path, off_t *bytes);
int burn_os_stdio_capacity(char *path, off_t write_start, off_t *bytes);
/* ts A91227 */
/** Returns the id string of the SCSI transport adapter and eventually

21
libburn/trunk/libburn/util.c
View File

@ -17,6 +17,8 @@
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
@ -377,4 +379,23 @@ double burn_get_time(int flag)
return (double) time(NULL);
}
/* ts B40609 */
off_t burn_sparse_file_addsize(off_t write_start, struct stat *stbuf)
{
off_t add_size;
add_size = stbuf->st_blocks * (off_t) 512;
if (add_size < stbuf->st_size) {
/* Sparse file */
if (write_start < stbuf->st_size) {
/* Might write into sparse gaps */
if (write_start > add_size)
add_size = write_start;
} else {
/* Will not write into sparse area */
add_size = stbuf->st_size;
}
}
return add_size;
}

8
libburn/trunk/libburn/util.h
View File

@ -1,6 +1,11 @@
#ifndef __UTIL
#define __UTIL
/* for struct stat */
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
/* ts A90905 */
int burn_util_make_printable_word(char **text, int flag);
@ -14,4 +19,7 @@ void burn_int_to_lsb(int val, char *target);
/* ts B30609 */
double burn_get_time(int flag);
/* ts B40609 */
off_t burn_sparse_file_addsize(off_t write_start, struct stat *stbuf);
#endif