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New API call burn_drive_re_assess()

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This commit is contained in:
Thomas Schmitt
2011-10-05 07:56:23 +00:00
parent c5718b7a4c
commit e05e813234
6 changed files with 205 additions and 120 deletions
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2
cdrskin/cdrskin_timestamp.h
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@ -1 +1 @@
#define Cdrskin_timestamP "2011.10.02.172004"
#define Cdrskin_timestamP "2011.10.05.075531"

297
libburn/drive.c
View File

@ -347,48 +347,152 @@ int burn_drive_send_default_page_05(struct burn_drive *d, int flag)
}
/* ts A70924 */
int burn_drive__fd_from_special_adr(char *adr)
{
int fd = -1, i;
if (strcmp(adr, "-") == 0)
fd = 1;
if(strncmp(adr, "/dev/fd/", 8) == 0) {
for (i = 8; adr[i]; i++)
if (!isdigit(adr[i]))
break;
if (i> 8 && adr[i] == 0)
fd = atoi(adr + 8);
}
return fd;
}
/* @param flag bit0= accept read-only files and return 2 in this case
bit1= accept write-only files and return 3 in this case
*/
static int burn_drive__is_rdwr(char *fname, int *stat_ret,
struct stat *stbuf_ret,
off_t *read_size_ret, int flag)
{
int fd, is_rdwr = 1, ret, getfl_ret, st_ret, mask;
struct stat stbuf;
off_t read_size = 0;
memset(&stbuf, 0, sizeof(struct stat));
fd = burn_drive__fd_from_special_adr(fname);
if (fd >= 0)
st_ret = fstat(fd, &stbuf);
else
st_ret = stat(fname, &stbuf);
if (st_ret != -1) {
is_rdwr = burn_os_is_2k_seekrw(fname, 0);
ret = 1;
if (S_ISREG(stbuf.st_mode))
read_size = stbuf.st_size;
else if (is_rdwr)
ret = burn_os_stdio_capacity(fname, &read_size);
if (ret <= 0 ||
read_size / (off_t) 2048 >= (off_t) 0x7ffffff0)
read_size = (off_t) 0x7ffffff0 * (off_t) 2048;
}
if (is_rdwr && fd >= 0) {
getfl_ret = fcntl(fd, F_GETFL);
/*
fprintf(stderr, "LIBBURN_DEBUG: burn_drive__is_rdwr: getfl_ret = %lX , O_RDWR = %lX , & = %lX , O_RDONLY = %lX\n", (unsigned long) getfl_ret, (unsigned long) O_RDWR, (unsigned long) (getfl_ret & O_RDWR), (unsigned long) O_RDONLY);
*/
mask = O_RDWR | O_WRONLY | O_RDONLY;
if (getfl_ret == -1 || (getfl_ret & mask) != O_RDWR)
is_rdwr = 0;
if ((flag & 1) && getfl_ret != -1 &&
(getfl_ret & mask) == O_RDONLY)
is_rdwr = 2;
if ((flag & 2) && getfl_ret != -1 &&
(getfl_ret & mask) == O_WRONLY)
is_rdwr = 3;
}
if (stat_ret != NULL)
*stat_ret = st_ret;
if (stbuf_ret != NULL)
memcpy(stbuf_ret, &stbuf, sizeof(struct stat));
if (read_size_ret != NULL)
*read_size_ret = read_size;
return is_rdwr;
}
int burn_drive_grab_stdio(struct burn_drive *d, int flag)
{
int stat_ret = -1, is_rdwr, ret;
struct stat stbuf;
off_t read_size= 0, size= 0;
char fd_name[40], *name_pt = NULL;
if(d->stdio_fd >= 0) {
sprintf(fd_name, "/dev/fd/%d", d->stdio_fd);
name_pt = fd_name;
} else if (d->devname[0]) {
name_pt = d->devname;
}
if (name_pt != NULL) {
/* re-assess d->media_read_capacity and free space */
is_rdwr = burn_drive__is_rdwr(name_pt, &stat_ret, &stbuf,
&read_size, 1 | 2);
/* despite its name : last valid address, not size */
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);
if (ret > 0)
burn_drive_set_media_capacity_remaining(d,
size);
}
}
d->released = 0;
d->current_profile = 0xffff;
if(d->drive_role == 2 || d->drive_role == 3) {
d->status = BURN_DISC_BLANK;
} else if(d->drive_role == 4) {
if (d->media_read_capacity > 0)
d->status = BURN_DISC_FULL;
else
d->status = BURN_DISC_EMPTY;
} else if(d->drive_role == 5) {
if (stat_ret != -1 && S_ISREG(stbuf.st_mode) &&
stbuf.st_size > 0) {
d->status = BURN_DISC_APPENDABLE;
if (stbuf.st_size / (off_t) 2048
>= 0x7ffffff0) {
d->status = BURN_DISC_FULL;
d->role_5_nwa = 0x7ffffff0;
} else
d->role_5_nwa = stbuf.st_size / 2048 +
!!(stbuf.st_size % 2048);
} else
d->status = BURN_DISC_BLANK;
} else {
d->status = BURN_DISC_EMPTY;
d->current_profile = 0;
}
d->busy = BURN_DRIVE_IDLE;
return 1;
}
int burn_drive_grab(struct burn_drive *d, int le)
{
int errcode;
/* ts A61125 - B10314 */
int ret, sose, stat_ret = -1;
struct stat stbuf;
int ret, sose;
if (!d->released) {
burn_print(1, "can't grab - already grabbed\n");
return 0;
}
if(d->drive_role != 1) {
d->released = 0;
d->current_profile = 0xffff;
if (d->devname[0])
stat_ret = stat(d->devname, &stbuf);
if(d->drive_role == 2 || d->drive_role == 3) {
d->status = BURN_DISC_BLANK;
} else if(d->drive_role == 4) {
if (d->media_read_capacity > 0)
d->status = BURN_DISC_FULL;
else
d->status = BURN_DISC_EMPTY;
} else if(d->drive_role == 5) {
if (stat_ret != -1 && S_ISREG(stbuf.st_mode) &&
stbuf.st_size > 0) {
d->status = BURN_DISC_APPENDABLE;
if (stbuf.st_size / (off_t) 2048
>= 0x7ffffff0) {
d->status = BURN_DISC_FULL;
d->role_5_nwa = 0x7ffffff0;
} else
d->role_5_nwa = stbuf.st_size / 2048 +
!!(stbuf.st_size % 2048);
} else
d->status = BURN_DISC_BLANK;
} else {
d->status = BURN_DISC_EMPTY;
d->current_profile = 0;
}
d->busy = BURN_DRIVE_IDLE;
return 1;
ret = burn_drive_grab_stdio(d, 0);
return ret;
}
d->status = BURN_DISC_UNREADY;
@ -536,7 +640,9 @@ ex:
/* ts A61125 : model aspects of burn_drive_release */
int burn_drive_mark_unready(struct burn_drive *d)
/* @param flag bit3= do not close d->stdio_fd
*/
int burn_drive_mark_unready(struct burn_drive *d, int flag)
{
/* ts A61020 : mark media info as invalid */
d->start_lba= -2000000000;
@ -556,15 +662,18 @@ int burn_drive_mark_unready(struct burn_drive *d)
burn_disc_free(d->disc);
d->disc = NULL;
}
if (d->stdio_fd >= 0)
close (d->stdio_fd);
d->stdio_fd = -1;
if (!(flag & 8)) {
if (d->stdio_fd >= 0)
close (d->stdio_fd);
d->stdio_fd = -1;
}
return 1;
}
/* ts A70918 : outsourced from burn_drive_release() and enhanced */
/** @param flag bit0-2 = mode : 0=unlock , 1=unlock+eject , 2=leave locked
bit3= do not call d->release()
*/
int burn_drive_release_fl(struct burn_drive *d, int flag)
{
@ -596,15 +705,17 @@ int burn_drive_release_fl(struct burn_drive *d, int flag)
d->unlock(d);
if ((flag & 7) == 1)
d->eject(d);
burn_drive_snooze(d, 0);
d->release(d);
if (!(flag & 8)) {
burn_drive_snooze(d, 0);
d->release(d);
}
}
d->needs_sync_cache = 0; /* just to be sure */
d->released = 1;
/* ts A61125 : outsourced model aspects */
burn_drive_mark_unready(d);
burn_drive_mark_unready(d, flag & 8);
return 1;
}
@ -632,6 +743,36 @@ void burn_drive_release(struct burn_drive *d, int le)
}
/* ts B11002 */
/* API */
int burn_drive_re_assess(struct burn_drive *d, int flag)
{
int ret;
if (d->released) {
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020108,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
"Drive is not grabbed on burn_drive_re_assess()",
0, 0);
return 0;
}
burn_drive_release_fl(d, 2 | 8);
if(d->drive_role != 1) {
ret = burn_drive_grab_stdio(d, 0);
return ret;
}
d->busy = BURN_DRIVE_GRABBING;
ret = burn_drive_inquire_media(d);
burn_drive_send_default_page_05(d, 0);
d->busy = BURN_DRIVE_IDLE;
d->released = 0;
return ret;
}
/* ts A70918 */
/* API */
int burn_drive_leave_locked(struct burn_drive *d, int flag)
@ -736,7 +877,7 @@ void burn_disc_erase_sync(struct burn_drive *d, int fast)
d->progress.sector = 0x10000;
/* ts A61125 : update media state records */
burn_drive_mark_unready(d);
burn_drive_mark_unready(d, 0);
if (d->drive_role == 1)
burn_drive_inquire_media(d);
d->busy = BURN_DRIVE_IDLE;
@ -790,7 +931,7 @@ void burn_disc_format_sync(struct burn_drive *d, off_t size, int flag)
goto ex;
/* update media state records */
burn_drive_mark_unready(d);
burn_drive_mark_unready(d, 0);
burn_drive_inquire_media(d);
if (flag & 1) {
/* write size in zeros */;
@ -1433,80 +1574,6 @@ char *burn_drive_whitelist_item(int idx, int flag)
}
/* ts A70924 */
int burn_drive__fd_from_special_adr(char *adr)
{
int fd = -1, i;
if (strcmp(adr, "-") == 0)
fd = 1;
if(strncmp(adr, "/dev/fd/", 8) == 0) {
for (i = 8; adr[i]; i++)
if (!isdigit(adr[i]))
break;
if (i> 8 && adr[i] == 0)
fd = atoi(adr + 8);
}
return fd;
}
/* @param flag bit0= accept read-only files and return 2 in this case
bit1= accept write-only files and return 3 in this case
*/
static int burn_drive__is_rdwr(char *fname, int *stat_ret,
struct stat *stbuf_ret,
off_t *read_size_ret, int flag)
{
int fd, is_rdwr = 1, ret, getfl_ret, st_ret, mask;
struct stat stbuf;
off_t read_size = 0;
memset(&stbuf, 0, sizeof(struct stat));
fd = burn_drive__fd_from_special_adr(fname);
if (fd >= 0)
st_ret = fstat(fd, &stbuf);
else
st_ret = stat(fname, &stbuf);
if (st_ret != -1) {
is_rdwr = burn_os_is_2k_seekrw(fname, 0);
ret = 1;
if (S_ISREG(stbuf.st_mode))
read_size = stbuf.st_size;
else if (is_rdwr)
ret = burn_os_stdio_capacity(fname, &read_size);
if (ret <= 0 ||
read_size / (off_t) 2048 >= (off_t) 0x7ffffff0)
read_size = (off_t) 0x7ffffff0 * (off_t) 2048;
}
if (is_rdwr && fd >= 0) {
getfl_ret = fcntl(fd, F_GETFL);
/*
fprintf(stderr, "LIBBURN_DEBUG: burn_drive__is_rdwr: getfl_ret = %lX , O_RDWR = %lX , & = %lX , O_RDONLY = %lX\n", (unsigned long) getfl_ret, (unsigned long) O_RDWR, (unsigned long) (getfl_ret & O_RDWR), (unsigned long) O_RDONLY);
*/
mask = O_RDWR | O_WRONLY | O_RDONLY;
if (getfl_ret == -1 || (getfl_ret & mask) != O_RDWR)
is_rdwr = 0;
if ((flag & 1) && getfl_ret != -1 &&
(getfl_ret & mask) == O_RDONLY)
is_rdwr = 2;
if ((flag & 2) && getfl_ret != -1 &&
(getfl_ret & mask) == O_WRONLY)
is_rdwr = 3;
}
if (stat_ret != NULL)
*stat_ret = st_ret;
if (stbuf_ret != NULL)
memcpy(stbuf_ret, &stbuf, sizeof(struct stat));
if (read_size_ret != NULL)
*read_size_ret = read_size;
return is_rdwr;
}
static int burn_role_by_access(char *fname, int flag)
{
/* We normally need _LARGEFILE64_SOURCE defined by the build system.

2
libburn/drive.h
View File

@ -85,7 +85,7 @@ struct burn_drive *burn_drive_finish_enum(struct burn_drive *d);
int burn_drive_inquire_media(struct burn_drive *d);
/* ts A61125 : model aspects of burn_drive_release */
int burn_drive_mark_unready(struct burn_drive *d);
int burn_drive_mark_unready(struct burn_drive *d, int flag);
/* ts A61226 */

11
libburn/libburn.h
View File

@ -1144,6 +1144,17 @@ int burn_drive_probe_cd_write_modes(struct burn_drive_info *drive_info);
int burn_drive_snooze(struct burn_drive *d, int flag);
/** Re-assess drive and media status. This should be done after a drive
underwent a status change and shall be further used without intermediate
burn_drive_release(), burn_drive_grab(). E.g. after blanking or burning.
@param drive The already grabbed drive to re-assess.
@param flag Unused yet. Submit 0.
@return 1 success , <= 0 could not determine drive and media state
@since 1.1.8
*/
int burn_drive_re_assess(struct burn_drive *d, int flag);
/** Release a drive. This should not be done until the drive is no longer
busy (see burn_drive_get_status).
@param drive The drive to release.

1
libburn/libburn.ver
View File

@ -59,6 +59,7 @@ burn_drive_is_enumerable_adr;
burn_drive_leave_locked;
burn_drive_obtain_scsi_adr;
burn_drive_probe_cd_write_modes;
burn_drive_re_assess;
burn_drive_release;
burn_drive_scan;
burn_drive_scan_and_grab;

12
libburn/write.c
View File

@ -2000,7 +2000,7 @@ ex:;
/* >>> eventual emergency finalization measures */
/* update media state records */
burn_drive_mark_unready(d);
burn_drive_mark_unready(d, 0);
burn_drive_inquire_media(d);
if (d->current_profile == 0x41 && d->complete_sessions >= 300) {
@ -2339,6 +2339,9 @@ int burn_stdio_write_sync(struct burn_write_opts *o,
d->progress.tracks = 1;
/* >>> adjust sector size (2048) to eventual audio or even raw */
/* >>> ??? ts B11004 : Why this eagerness to close and open ? */
/* open target file */
if (d->stdio_fd >= 0)
close(d->stdio_fd);
@ -2359,12 +2362,15 @@ int burn_stdio_write_sync(struct burn_write_opts *o,
d->progress.sectors = 0;
ret = 1;
ex:;
/* >>> ??? ts B11004 : Why this eagerness to close ? */
if (d->stdio_fd >= 0)
close(d->stdio_fd);
d->stdio_fd = -1;
/* update media state records */
burn_drive_mark_unready(d);
burn_drive_mark_unready(d, 8);
/* <<< d->busy = BURN_DRIVE_IDLE; */
return ret;
@ -2609,7 +2615,7 @@ return crap. so we send the command, then ignore the result.
sleep(1);
/* ts A61125 : update media state records */
burn_drive_mark_unready(d);
burn_drive_mark_unready(d, 0);
burn_drive_inquire_media(d);
burn_print(1, "done\n");