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legacy/trunk/libburn/drive.c

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/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
#include <sys/types.h>
#include <sys/stat.h>
#include <malloc.h>
#include <unistd.h>
#include <signal.h>
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <pthread.h>
#include "libburn.h"
#include "drive.h"
#include "transport.h"
#include "debug.h"
#include "init.h"
#include "toc.h"
#include "util.h"
#include "sg.h"
#include "structure.h"
#include "back_hacks.h"
#include "libdax_msgs.h"
extern struct libdax_msgs *libdax_messenger;
static struct burn_drive drive_array[255];
static int drivetop = -1;
/* ts A60904 : ticket 62, contribution by elmom */
/* splitting former burn_drive_free() (which freed all, into two calls) */
void burn_drive_free(struct burn_drive *d)
{
if (d->global_index == -1)
return;
/* ts A60822 : close open fds before forgetting them */
if (burn_drive_is_open(d))
sg_close_drive(d);
free((void *) d->idata);
free((void *) d->mdata);
free((void *) d->toc_entry);
free(d->devname);
d->global_index = -1;
}
void burn_drive_free_all(void)
{
int i;
for (i = 0; i < drivetop + 1; i++)
burn_drive_free(&(drive_array[i]));
drivetop = -1;
memset(drive_array, 0, sizeof(drive_array));
}
/* ts A60822 */
int burn_drive_is_open(struct burn_drive *d)
{
/* a bit more detailed case distinction than needed */
if (d->fd == -1337)
return 0;
if (d->fd < 0)
return 0;
return 1;
}
/* ts A60906 */
int burn_drive_force_idle(struct burn_drive *d)
{
d->busy = BURN_DRIVE_IDLE;
return 1;
}
/* ts A60906 */
int burn_drive_is_released(struct burn_drive *d)
{
return !!d->released;
}
/* ts A60906 */
/** Inquires drive status in respect to degree of app usage.
@param return -2 = drive is forgotten
-1 = drive is closed (i.e. released explicitely)
0 = drive is open, not grabbed (after scan, before 1st grab)
1 = drive is grabbed but BURN_DRIVE_IDLE
10 = drive is grabbing (BURN_DRIVE_GRABBING)
100 = drive is busy in cancelable state
1000 = drive is in non-cancelable state
Expect a monotonous sequence of usage severity to emerge in future.
*/
int burn_drive_is_occupied(struct burn_drive *d)
{
if(d->global_index < 0)
return -2;
if(!burn_drive_is_open(d))
return -1;
if(d->busy == BURN_DRIVE_GRABBING)
return 10;
if(d->released)
return 0;
if(d->busy == BURN_DRIVE_IDLE)
return 1;
if(d->busy == BURN_DRIVE_READING || d->busy == BURN_DRIVE_WRITING)
return 50;
return 1000;
}
/*
void drive_read_lead_in(int dnum)
{
mmc_read_lead_in(&drive_array[dnum], get_4k());
}
*/
unsigned int burn_drive_count(void)
{
return drivetop + 1;
}
int burn_drive_grab(struct burn_drive *d, int le)
{
int errcode;
int was_equal = 0, must_equal = 3, max_loop = 20;
/* ts A60907 */
int loop_count, old_speed = -1234567890, new_speed = -987654321;
int old_erasable = -1234567890, new_erasable = -987654321;
if (!d->released) {
burn_print(1, "can't grab - already grabbed\n");
return 0;
}
errcode = d->grab(d);
if (errcode == 0) {
burn_print(1, "low level drive grab failed\n");
return 0;
}
d->busy = BURN_DRIVE_GRABBING;
if (le)
d->load(d);
d->lock(d);
d->status = BURN_DISC_BLANK;
if (d->mdata->cdr_write || d->mdata->cdrw_write ||
d->mdata->dvdr_write || d->mdata->dvdram_write) {
#ifdef Libburn_grab_release_and_grab_agaiN
d->read_disc_info(d);
#else
/* ts A60908 */
/* Trying to stabilize the disc status after eventual load
without closing and re-opening the drive */
/* This seems to work for burn_disc_erasable() .
Speed values on RIP-14 and LITE-ON 48125S are stable
and false, nevertheless. So cdrskin -atip is still
forced to finish-initialize. */
/*
fprintf(stderr,"libburn: experimental: read_disc_info()\n");
*/
for (loop_count = 0; loop_count < max_loop; loop_count++){
old_speed = new_speed;
old_erasable = new_erasable;
d->read_disc_info(d);
new_speed = burn_drive_get_write_speed(d);
new_erasable = burn_disc_erasable(d);
if (new_speed == old_speed &&
new_erasable == old_erasable) {
was_equal++;
if (was_equal >= must_equal)
break;
} else
was_equal = 0;
/*
if (loop_count >= 1 && was_equal == 0)
fprintf(stderr,"libburn: experimental: %d : speed %d:%d erasable %d:%d\n",
loop_count,old_speed,new_speed,old_erasable,new_erasable);
*/
usleep(100000);
}
#endif /* ! Libburn_grab_release_and_grab_agaiN */
} else {
d->read_toc(d);
}
d->busy = BURN_DRIVE_IDLE;
return 1;
}
struct burn_drive *burn_drive_register(struct burn_drive *d)
{
#ifdef Libburn_ticket_62_re_register_is_possiblE
int i;
#endif
d->block_types[0] = 0;
d->block_types[1] = 0;
d->block_types[2] = 0;
d->block_types[3] = 0;
d->toc_temp = 0;
d->nwa = 0;
d->alba = 0;
d->rlba = 0;
d->cancel = 0;
d->busy = BURN_DRIVE_IDLE;
d->toc_entries = 0;
d->toc_entry = NULL;
d->disc = NULL;
d->erasable = 0;
#ifdef Libburn_ticket_62_re_register_is_possiblE
/* ts A60904 : ticket 62, contribution by elmom */
/* Not yet accepted because no use case seen yet */
/* This is supposed to find an already freed drive struct among
all the the ones that have been used before */
for (i = 0; i < drivetop + 1; i++)
if (drive_array[i].global_index == -1)
break;
d->global_index = i;
memcpy(&drive_array[i], d, sizeof(struct burn_drive));
pthread_mutex_init(&drive_array[i].access_lock, NULL);
if (drivetop < i)
drivetop = i;
return &(drive_array[i]);
#else /* Libburn_ticket_62_re_register_is_possiblE */
/* old A60904 : */
/* Still active by default */
d->global_index = drivetop + 1;
memcpy(&drive_array[drivetop + 1], d, sizeof(struct burn_drive));
pthread_mutex_init(&drive_array[drivetop + 1].access_lock, NULL);
return &drive_array[++drivetop];
#endif /* ! Libburn_ticket_62_re_register_is_possiblE */
}
/* unregister most recently registered drive */
int burn_drive_unregister(struct burn_drive *d)
{
if(d->global_index != drivetop)
return 0;
burn_drive_free(d);
drivetop--;
return 1;
}
void burn_drive_release(struct burn_drive *d, int le)
{
if (d->released)
burn_print(1, "second release on drive!\n");
/* ts A60906: one should not assume BURN_DRIVE_IDLE == 0 */
assert(d->busy == BURN_DRIVE_IDLE);
d->unlock(d);
if (le)
d->eject(d);
d->release(d);
d->status = BURN_DISC_UNREADY;
d->released = 1;
if (d->toc_entry)
free(d->toc_entry);
d->toc_entry = NULL;
d->toc_entries = 0;
if (d->disc != NULL) {
burn_disc_free(d->disc);
d->disc = NULL;
}
}
void burn_wait_all(void)
{
unsigned int i;
int finished = 0;
struct burn_drive *d;
while (!finished) {
finished = 1;
d = drive_array;
for (i = burn_drive_count(); i > 0; --i, ++d) {
/* ts A60904 : ticket 62, contribution by elmom */
if (d->global_index==-1)
continue;
assert(d->released);
}
if (!finished)
sleep(1);
}
}
void burn_disc_erase_sync(struct burn_drive *d, int fast)
{
/* ts A60924 : libburn/message.c gets obsoleted
burn_message_clear_queue();
*/
burn_print(1, "erasing drive %s %s\n", d->idata->vendor,
d->idata->product);
/* ts A60825 : allow on parole to blank appendable CDs */
if ( ! (d->status == BURN_DISC_FULL ||
(d->status == BURN_DISC_APPENDABLE &&
! libburn_back_hack_42) ) )
return;
d->cancel = 0;
d->busy = BURN_DRIVE_ERASING;
d->erase(d, fast);
/* reset the progress */
d->progress.session = 0;
d->progress.sessions = 1;
d->progress.track = 0;
d->progress.tracks = 1;
d->progress.index = 0;
d->progress.indices = 1;
d->progress.start_sector = 0;
d->progress.sectors = 0x10000;
d->progress.sector = 0;
/* read the initial 0 stage */
while (!d->test_unit_ready(d) && d->get_erase_progress(d) == 0)
sleep(1);
while ((d->progress.sector = d->get_erase_progress(d)) > 0 ||
!d->test_unit_ready(d))
sleep(1);
d->progress.sector = 0x10000;
d->busy = BURN_DRIVE_IDLE;
}
enum burn_disc_status burn_disc_get_status(struct burn_drive *d)
{
assert(!d->released);
return d->status;
}
int burn_disc_erasable(struct burn_drive *d)
{
return d->erasable;
}
enum burn_drive_status burn_drive_get_status(struct burn_drive *d,
struct burn_progress *p)
{
if (p) {
memcpy(p, &(d->progress), sizeof(struct burn_progress));
/* TODO: add mutex */
}
return d->busy;
}
void burn_drive_cancel(struct burn_drive *d)
{
pthread_mutex_lock(&d->access_lock);
d->cancel = 1;
pthread_mutex_unlock(&d->access_lock);
}
#ifdef NIX
int burn_drive_get_block_types(struct burn_drive *d,
enum burn_write_types write_type)
{
burn_print(12, "write type: %d\n", write_type);
assert( /* (write_type >= BURN_WRITE_PACKET) && */
(write_type <= BURN_WRITE_RAW));
return d->block_types[write_type];
}
#endif
static void strip_spaces(char *str)
{
char *tmp;
tmp = str + strlen(str) - 1;
while (isspace(*tmp))
*(tmp--) = '\0';
tmp = str;
while (*tmp) {
if (isspace(*tmp) && isspace(*(tmp + 1))) {
char *tmp2;
for (tmp2 = tmp + 1; *tmp2; ++tmp2)
*(tmp2 - 1) = *tmp2;
*(tmp2 - 1) = '\0';
} else
++tmp;
}
}
static int drive_getcaps(struct burn_drive *d, struct burn_drive_info *out)
{
struct scsi_inquiry_data *id;
assert(d->idata);
assert(d->mdata);
if (!d->idata->valid || !d->mdata->valid)
return 0;
id = (struct scsi_inquiry_data *)d->idata;
memcpy(out->vendor, id->vendor, sizeof(id->vendor));
strip_spaces(out->vendor);
memcpy(out->product, id->product, sizeof(id->product));
strip_spaces(out->product);
memcpy(out->revision, id->revision, sizeof(id->revision));
strip_spaces(out->revision);
strncpy(out->location, d->devname, 16);
out->location[16] = '\0';
out->buffer_size = d->mdata->buffer_size;
out->read_dvdram = !!d->mdata->dvdram_read;
out->read_dvdr = !!d->mdata->dvdr_read;
out->read_dvdrom = !!d->mdata->dvdrom_read;
out->read_cdr = !!d->mdata->cdr_read;
out->read_cdrw = !!d->mdata->cdrw_read;
out->write_dvdram = !!d->mdata->dvdram_write;
out->write_dvdr = !!d->mdata->dvdr_write;
out->write_cdr = !!d->mdata->cdr_write;
out->write_cdrw = !!d->mdata->cdrw_write;
out->write_simulate = !!d->mdata->simulate;
out->c2_errors = !!d->mdata->c2_pointers;
out->drive = d;
/* update available block types for burners */
if (out->write_dvdram || out->write_dvdr ||
out->write_cdrw || out->write_cdr)
d->probe_write_modes(d);
out->tao_block_types = d->block_types[BURN_WRITE_TAO];
out->sao_block_types = d->block_types[BURN_WRITE_SAO];
out->raw_block_types = d->block_types[BURN_WRITE_RAW];
out->packet_block_types = d->block_types[BURN_WRITE_PACKET];
return 1;
}
int burn_drive_scan_sync(struct burn_drive_info *drives[],
unsigned int *n_drives)
{
/* state vars for the scan process */
/* ts A60904 : did set some default values to feel comfortable */
static int scanning = 0, scanned = 0, found = 0;
static unsigned num_scanned = 0, count = 0;
unsigned int i;
#ifdef Libburn_ticket_62_enable_redundant_asserT
struct burn_drive *d;
#endif
assert(burn_running);
if (!scanning) {
scanning = 1;
/* make sure the drives aren't in use */
burn_wait_all(); /* make sure the queue cleans up
before checking for the released
state */
/* ts A60904 : ticket 62, contribution by elmom */
/* this is redundant with what is done in burn_wait_all() */
#ifdef Libburn_ticket_62_enable_redundant_asserT
d = drive_array;
count = burn_drive_count();
for (i = 0; i < count; ++i, ++d)
assert(d->released == 1);
#endif /* Libburn_ticket_62_enable_redundant_asserT */
/* refresh the lib's drives */
sg_enumerate();
ata_enumerate();
count = burn_drive_count();
if (count)
*drives =
malloc(sizeof(struct burn_drive_info) * count);
else
*drives = NULL;
*n_drives = scanned = found = num_scanned = 0;
}
for (i = 0; i < count; ++i) {
if (scanned & (1 << i))
continue; /* already scanned the device */
while (!drive_getcaps(&drive_array[i],
&(*drives)[num_scanned])) {
sleep(1);
}
scanned |= 1 << i;
found |= 1 << i;
num_scanned++;
(*n_drives)++;
}
if (num_scanned == count) {
/* done scanning */
scanning = 0;
return 1;
}
return 0;
}
void burn_drive_info_free(struct burn_drive_info drive_infos[])
{
/* ts A60904 : ticket 62, contribution by elmom */
/* clarifying the meaning and the identity of the victim */
/* ts A60904 : This looks a bit weird.
burn_drive_info is not the manager of burn_drive but only its
spokesperson. To my knowlege drive_infos from burn_drive_scan()
are not memorized globally. */
if(drive_infos != NULL) /* and this NULL test is deadly necessary */
free((void *) drive_infos);
burn_drive_free_all();
}
/* ts A61001 : internal call */
int burn_drive_forget(struct burn_drive *d, int force)
{
int occup;
occup = burn_drive_is_occupied(d);
/*
fprintf(stderr, "libburn: experimental: occup == %d\n",occup);
*/
if(occup <= -2)
return 2;
if(occup > 0)
if(force < 1)
return 0;
if(occup > 10)
return 0;
/* >>> do any drive calming here */;
burn_drive_force_idle(d);
if(occup > 0 && !burn_drive_is_released(d))
burn_drive_release(d,0);
burn_drive_free(d);
return 1;
}
/* API call */
int burn_drive_info_forget(struct burn_drive_info *info, int force)
{
return burn_drive_forget(info->drive, force);
}
struct burn_disc *burn_drive_get_disc(struct burn_drive *d)
{
d->disc->refcnt++;
return d->disc;
}
void burn_drive_set_speed(struct burn_drive *d, int r, int w)
{
d->set_speed(d, r, w);
}
int burn_msf_to_sectors(int m, int s, int f)
{
return (m * 60 + s) * 75 + f;
}
void burn_sectors_to_msf(int sectors, int *m, int *s, int *f)
{
*m = sectors / (60 * 75);
*s = (sectors - *m * 60 * 75) / 75;
*f = sectors - *m * 60 * 75 - *s * 75;
}
int burn_drive_get_read_speed(struct burn_drive *d)
{
return d->mdata->max_read_speed;
}
int burn_drive_get_write_speed(struct burn_drive *d)
{
return d->mdata->max_write_speed;
}
/* ts A51221 */
static char *enumeration_whitelist[BURN_DRIVE_WHITELIST_LEN];
static int enumeration_whitelist_top = -1;
/** Add a device to the list of permissible drives. As soon as some entry is in
the whitelist all non-listed drives are banned from enumeration.
@return 1 success, <=0 failure
*/
int burn_drive_add_whitelist(char *device_address)
{
char *new_item;
if(enumeration_whitelist_top+1 >= BURN_DRIVE_WHITELIST_LEN)
return 0;
enumeration_whitelist_top++;
new_item = malloc(strlen(device_address) + 1);
if (new_item == NULL)
return -1;
strcpy(new_item, device_address);
enumeration_whitelist[enumeration_whitelist_top] = new_item;
return 1;
}
/** Remove all drives from whitelist. This enables all possible drives. */
void burn_drive_clear_whitelist(void)
{
int i;
for (i = 0; i <= enumeration_whitelist_top; i++)
free(enumeration_whitelist[i]);
enumeration_whitelist_top = -1;
}
int burn_drive_is_banned(char *device_address)
{
int i;
if(enumeration_whitelist_top<0)
return 0;
for (i = 0; i <= enumeration_whitelist_top; i++)
if (strcmp(enumeration_whitelist[i], device_address) == 0)
return 0;
return 1;
}
/* ts A60823 */
/** Aquire a drive with known persistent address.
*/
int burn_drive_scan_and_grab(struct burn_drive_info *drive_infos[], char* adr,
int load)
{
unsigned int n_drives;
int ret;
burn_drive_clear_whitelist();
burn_drive_add_whitelist(adr);
/*
fprintf(stderr,"libburn: experimental: burn_drive_scan_and_grab(%s)\n",
adr);
*/
while (!burn_drive_scan(drive_infos, &n_drives))
usleep(1002);
if (n_drives <= 0)
return 0;
/*
fprintf(stderr, "libburn: experimental: n_drives == %d\n",n_drives);
*/
/* ts A60908 : seems we get rid of this :) */
#ifdef Libburn_grab_release_and_grab_agaiN
if (load) {
/* RIP-14.5 + LITE-ON 48125S produce a false status
if tray was unloaded */
/* Therefore the first grab is just for loading */
ret= burn_drive_grab(drive_infos[0]->drive, 1);
if (ret != 1)
return -1;
burn_drive_release(drive_infos[0]->drive,0);
}
#endif /* Libburn_grab_release_and_grab_agaiN */
ret = burn_drive_grab(drive_infos[0]->drive, load);
if (ret != 1)
return -1;
return 1;
}
/* ts A60925 */
/** Simple debug message frontend to libdax_msgs_submit().
If arg is not NULL, then fmt MUST contain exactly one %s and no
other sprintf() %-formatters.
*/
int burn_drive_adr_debug_msg(char *fmt, char *arg)
{
int ret;
char msg[4096], *msgpt;
msgpt= msg;
if(arg != NULL)
sprintf(msg, fmt, arg);
else
msgpt= fmt;
if(libdax_messenger == NULL)
return 0;
ret = libdax_msgs_submit(libdax_messenger, -1, 0x00000002,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_ZERO,
msgpt, 0, 0);
return ret;
}
/* ts A60923 */
/** Inquire the persistent address of the given drive. */
int burn_drive_raw_get_adr(struct burn_drive *d, char adr[])
{
assert(strlen(d->devname) < BURN_DRIVE_ADR_LEN);
strcpy(adr,d->devname);
return 1;
}
/* ts A60823 - A60923 */
/** Inquire the persistent address of the given drive. */
int burn_drive_get_adr(struct burn_drive_info *drive_info, char adr[])
{
int ret;
assert(drive_info->drive!=NULL);
ret = burn_drive_raw_get_adr(drive_info->drive, adr);
return ret;
}
/* ts A60922 ticket 33 */
/** Evaluate wether the given address would be enumerated by libburn */
int burn_drive_is_enumerable_adr(char *adr)
{
return sg_is_enumerable_adr(adr);
}
#define BURN_DRIVE_MAX_LINK_DEPTH 20
/* ts A60922 ticket 33 */
/* Try to find an enumerated address with the given stat.st_rdev number */
int burn_drive_resolve_link(char *path, char adr[], int *recursion_count)
{
int ret;
char link_target[4096], msg[4096+100], link_adr[4096], *adrpt;
burn_drive_adr_debug_msg("burn_drive_resolve_link( %s )", path);
if (*recursion_count >= BURN_DRIVE_MAX_LINK_DEPTH) {
burn_drive_adr_debug_msg(
"burn_drive_resolve_link aborts because link too deep",
NULL);
return 0;
}
(*recursion_count)++;
ret = readlink(path, link_target, sizeof(link_target));
if (ret == -1) {
burn_drive_adr_debug_msg("readlink( %s ) returns -1", path);
return 0;
}
if (ret >= sizeof(link_target) - 1) {
sprintf(msg,"readlink( %s ) returns %d (too much)", path, ret);
burn_drive_adr_debug_msg(msg, NULL);
return -1;
}
link_target[ret] = 0;
adrpt= link_target;
if (link_target[0] != '/') {
strcpy(link_adr, path);
if ((adrpt = strrchr(link_adr, '/')) != NULL) {
strcpy(adrpt + 1, link_target);
adrpt = link_adr;
} else
adrpt = link_target;
}
ret = burn_drive_convert_fs_adr_sub(adrpt, adr, recursion_count);
sprintf(msg,"burn_drive_convert_fs_adr( %s ) returns %d",
link_target, ret);
burn_drive_adr_debug_msg(msg, NULL);
return ret;
}
/* ts A60922 ticket 33 */
/* Try to find an enumerated address with the given stat.st_rdev number */
int burn_drive_find_devno(dev_t devno, char adr[])
{
char fname[4096], msg[4096+100];
int i, ret = 0, first = 1;
struct stat stbuf;
while (1) {
ret= sg_give_next_adr(&i, fname, sizeof(fname), first);
if(ret <= 0)
break;
first = 0;
ret = stat(fname, &stbuf);
if(ret == -1)
continue;
if(devno != stbuf.st_rdev)
continue;
if(strlen(fname) >= BURN_DRIVE_ADR_LEN)
return -1;
sprintf(msg, "burn_drive_find_devno( 0x%lX ) found %s",
(long) devno, fname);
burn_drive_adr_debug_msg(msg, NULL);
strcpy(adr, fname);
return 1;
}
return 0;
}
/* ts A60923 */
/** Try to obtain host,channel,target,lun from path.
@return 1 = success , 0 = failure , -1 = severe error
*/
int burn_drive_obtain_scsi_adr(char *path,
int *bus_no, int *host_no, int *channel_no,
int *target_no, int *lun_no)
{
int ret, i;
char adr[BURN_DRIVE_ADR_LEN];
/* open drives cannot be inquired by sg_obtain_scsi_adr() */
for (i = 0; i < drivetop + 1; i++) {
if (drive_array[i].global_index < 0)
continue;
ret = burn_drive_raw_get_adr(&(drive_array[i]),adr);
if (ret <= 0)
continue;
if (strcmp(adr, path) == 0) {
*host_no = drive_array[i].host;
*channel_no = drive_array[i].channel;
*target_no = drive_array[i].id;
*lun_no = drive_array[i].lun;
*bus_no = drive_array[i].bus_no;
if (*host_no < 0 || *channel_no < 0 ||
*target_no < 0 || *lun_no < 0)
return 0;
return 1;
}
}
ret = sg_obtain_scsi_adr(path, bus_no, host_no, channel_no,
target_no, lun_no);
return ret;
}
/* ts A60923 */
int burn_drive_convert_scsi_adr(int bus_no, int host_no, int channel_no,
int target_no, int lun_no, char adr[])
{
char fname[4096],msg[4096+100];
int i, ret = 0, first = 1, i_bus_no = -1;
int i_host_no = -1, i_channel_no = -1, i_target_no = -1, i_lun_no = -1;
sprintf(msg,"burn_drive_convert_scsi_adr( %d,%d,%d,%d,%d )",
bus_no, host_no, channel_no, target_no, lun_no);
burn_drive_adr_debug_msg(msg, NULL);
while (1) {
ret= sg_give_next_adr(&i, fname, sizeof(fname), first);
if(ret <= 0)
break;
first = 0;
ret = burn_drive_obtain_scsi_adr(fname, &i_bus_no, &i_host_no,
&i_channel_no, &i_target_no, &i_lun_no);
if(ret <= 0)
continue;
if(bus_no >=0 && i_bus_no != bus_no)
continue;
if(host_no >=0 && i_host_no != host_no)
continue;
if(channel_no >= 0 && i_channel_no != channel_no)
continue;
if(target_no >= 0 && i_target_no != target_no)
continue;
if(lun_no >= 0 && i_lun_no != lun_no)
continue;
if(strlen(fname) >= BURN_DRIVE_ADR_LEN)
return -1;
burn_drive_adr_debug_msg(
"burn_drive_convert_scsi_adr() found %s", fname);
strcpy(adr, fname);
return 1;
}
return 0;
}
/* ts A60922 ticket 33 */
/* Try to find an enumerated address with the same host,channel,target,lun
as path */
int burn_drive_find_scsi_equiv(char *path, char adr[])
{
int ret = 0;
int bus_no, host_no, channel_no, target_no, lun_no;
char msg[4096];
ret = burn_drive_obtain_scsi_adr(path, &bus_no, &host_no, &channel_no,
&target_no, &lun_no);
if(ret <= 0) {
sprintf(msg,"burn_drive_obtain_scsi_adr( %s ) returns %d\n",
path, ret);
burn_drive_adr_debug_msg(msg, NULL);
return 0;
}
sprintf(msg, "burn_drive_find_scsi_equiv( %s ) : (%d),%d,%d,%d,%d",
path, bus_no, host_no, channel_no, target_no, lun_no);
burn_drive_adr_debug_msg(msg, NULL);
ret= burn_drive_convert_scsi_adr(-1, host_no, channel_no, target_no,
lun_no, adr);
return ret;
}
/* ts A60922 ticket 33 */
/** Try to convert a given existing filesystem address into a persistent drive
address. */
int burn_drive_convert_fs_adr_sub(char *path, char adr[], int *rec_count)
{
int ret;
struct stat stbuf;
burn_drive_adr_debug_msg("burn_drive_convert_fs_adr( %s )", path);
if(burn_drive_is_enumerable_adr(path)) {
if(strlen(path) >= BURN_DRIVE_ADR_LEN)
return -1;
burn_drive_adr_debug_msg(
"burn_drive_is_enumerable_adr( %s ) is true", path);
strcpy(adr, path);
return 1;
}
if(lstat(path, &stbuf) == -1) {
burn_drive_adr_debug_msg("lstat( %s ) returns -1", path);
return 0;
}
if((stbuf.st_mode & S_IFMT) == S_IFLNK) {
ret = burn_drive_resolve_link(path, adr, rec_count);
if(ret > 0)
return 1;
burn_drive_adr_debug_msg("link fallback via stat( %s )", path);
if(stat(path, &stbuf) == -1) {
burn_drive_adr_debug_msg("stat( %s ) returns -1",path);
return 0;
}
}
if((stbuf.st_mode&S_IFMT) == S_IFBLK ||
(stbuf.st_mode&S_IFMT) == S_IFCHR) {
ret = burn_drive_find_devno(stbuf.st_rdev, adr);
if(ret > 0)
return 1;
ret = burn_drive_find_scsi_equiv(path, adr);
if(ret > 0)
return 1;
}
burn_drive_adr_debug_msg("Nothing found for %s", path);
return 0;
}
/** Try to convert a given existing filesystem address into a persistent drive
address. */
int burn_drive_convert_fs_adr(char *path, char adr[])
{
int ret, rec_count = 0;
ret = burn_drive_convert_fs_adr_sub(path, adr, &rec_count);
return ret;
}
/** A pacifier function suitable for burn_abort.
@param handle If not NULL, a pointer to a text suitable for printf("%s")
*/
int burn_abort_pacifier(void *handle, int patience, int elapsed)
{
char *prefix= "libburn : ";
if(handle!=NULL)
prefix= handle;
fprintf(stderr,
"\r%sABORT : Waiting for drive to finish ( %d s, %d max)",
(char *) prefix, elapsed, patience);
return(1);
}
/** Abort any running drive operation and finis libburn.
@param patience Maximum number of seconds to wait for drives to finish
@param pacifier_func Function to produce appeasing messages. See
burn_abort_pacifier() for an example.
@return 1 ok, all went well
0 had to leave a drive in unclean state
<0 severe error, do no use libburn again
*/
int burn_abort(int patience,
int (*pacifier_func)(void *handle, int patience, int elapsed),
void *handle)
{
int ret, i, occup, still_not_done= 1, pacifier_off= 0, first_round= 1;
unsigned long wait_grain= 100000;
time_t start_time, current_time, pacifier_time, end_time;
current_time = start_time = pacifier_time = time(0);
end_time = start_time + patience;
while(current_time-end_time < patience) {
still_not_done = 0;
for(i = 0; i < drivetop + 1; i++) {
occup = burn_drive_is_occupied(&(drive_array[i]));
if(occup == -2)
continue;
if(occup <= 10) {
burn_drive_forget(&(drive_array[i]), 1);
} else if(occup <= 100) {
if(first_round)
burn_drive_cancel(&(drive_array[i]));
still_not_done++;
} else if(occup <= 1000) {
still_not_done++;
}
}
first_round = 0;
if(still_not_done == 0)
break;
usleep(wait_grain);
current_time = time(0);
if(current_time>pacifier_time) {
if(pacifier_func != NULL && !pacifier_off) {
ret = (*pacifier_func)(handle, patience,
current_time-start_time);
pacifier_off = (ret <= 0);
}
pacifier_time = current_time;
}
}
burn_finish();
return(still_not_done == 0);
}
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