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libburn/libburn/sg-freebsd.c

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/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
/*
Copyright (c) 2006 - 2013 Thomas Schmitt <scdbackup@gmx.net>
Provided under GPL version 2 or later
and under FreeBSD license revised, i.e. without advertising clause.
*/
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <stdlib.h>
#include <string.h>
#include <sys/poll.h>
#include <camlib.h>
#include <cam/scsi/scsi_message.h>
#include <cam/scsi/scsi_pass.h>
#include <err.h> /* XXX */
/* ts A70909 */
#include <sys/statvfs.h>
/* ts B00121 */
#include <sys/disk.h> /* DIOCGMEDIASIZE */
/* ts B00326 : For use of CAM_PASS_ERR_RECOVER with ahci */
#define Libburn_for_freebsd_ahcI yes
/* ts B00327 : for debugging of cam_send_cdb() failures
# define Libburn_ahci_verbouS yes
*/
/* ts B00327 : Apply CAM_PASS_ERR_RECOVER to drives even if not ahci
# define libburn_ahci_style_for_alL yes
*/
#include "transport.h"
#include "drive.h"
#include "sg.h"
#include "spc.h"
#include "mmc.h"
#include "sbc.h"
#include "debug.h"
#include "toc.h"
#include "util.h"
#include "init.h"
#include "libdax_msgs.h"
extern struct libdax_msgs *libdax_messenger;
struct burn_drive_enumeration_state {
int fd;
union ccb ccb;
unsigned int i;
int skip_device;
};
static void enumerate_common(char *fname, int bus_no, int host_no,
int channel_no, int target_no, int lun_no);
/* ts A51221 */
int burn_drive_is_banned(char *device_address);
/* ts A60821
debug: for tracing calls which might use open drive fds
or for catching SCSI usage of emulated drives. */
int mmc_function_spy(struct burn_drive *d, char * text);
/* ts B00113
Whether to log SCSI commands:
bit0= log in /tmp/libburn_sg_command_log
bit1= log to stderr
bit2= flush every line
*/
extern int burn_sg_log_scsi;
/* ts B00114 */
/* Storage object is in libburn/init.c
whether to strive for exclusive access to the drive
*/
extern int burn_sg_open_o_excl;
/* ts A91227 */
/** Returns the id string of the SCSI transport adapter and eventually
needed operating system facilities.
This call is usable even if sg_initialize() was not called yet. In that
case a preliminary constant message might be issued if detailed info is
not available yet.
@param msg returns id string
@param flag unused yet, submit 0
@return 1 = success, <=0 = failure
*/
int sg_id_string(char msg[1024], int flag)
{
strcpy(msg, "internal FreeBSD CAM adapter sg-freebsd");
return 1;
}
/* ts A91227 */
/** Performs global initialization of the SCSI transport adapter and eventually
needed operating system facilities. Checks for compatibility supporting
software components.
@param msg returns ids and/or error messages of eventual helpers
@param flag unused yet, submit 0
@return 1 = success, <=0 = failure
*/
int sg_initialize(char msg[1024], int flag)
{
return sg_id_string(msg, 0);
}
/* ts A91227 */
/** Performs global finalization of the SCSI transport adapter and eventually
needed operating system facilities. Releases globally aquired resources.
@param flag unused yet, submit 0
@return 1 = success, <=0 = failure
*/
int sg_shutdown(int flag)
{
return 1;
}
/** Finalizes BURN_OS_TRANSPORT_DRIVE_ELEMENTS, the components of
struct burn_drive which are defined in os-*.h.
The eventual initialization of those components was made underneath
scsi_enumerate_drives().
This will be called when a burn_drive gets disposed.
@param d the drive to be finalized
@param flag unused yet, submit 0
@return 1 = success, <=0 = failure
*/
int sg_dispose_drive(struct burn_drive *d, int flag)
{
return 1;
}
/* ts A61021 : Moved most code from scsi_enumerate_drives under
sg_give_next_adr() */
/* Some helper functions for scsi_give_next_adr() */
static int sg_init_enumerator(burn_drive_enumerator_t *idx_)
{
struct burn_drive_enumeration_state *idx;
int bufsize;
idx = calloc(1, sizeof(*idx));
if (idx == NULL) {
warnx("cannot allocate memory for enumerator");
return -1;
}
idx->skip_device = 0;
if ((idx->fd = open(XPT_DEVICE, O_RDWR)) == -1) {
warn("could not open %s", XPT_DEVICE);
free(idx);
idx = NULL;
return -1;
}
memset(&(idx->ccb), 0, sizeof(union ccb));
idx->ccb.ccb_h.path_id = CAM_XPT_PATH_ID;
idx->ccb.ccb_h.target_id = CAM_TARGET_WILDCARD;
idx->ccb.ccb_h.target_lun = CAM_LUN_WILDCARD;
idx->ccb.ccb_h.func_code = XPT_DEV_MATCH;
bufsize = sizeof(struct dev_match_result) * 100;
idx->ccb.cdm.match_buf_len = bufsize;
idx->ccb.cdm.matches = (struct dev_match_result *) calloc(1, bufsize);
if (idx->ccb.cdm.matches == NULL) {
warnx("cannot allocate memory for matches");
close(idx->fd);
free(idx);
return -1;
}
idx->ccb.cdm.num_matches = 0;
idx->i = idx->ccb.cdm.num_matches; /* to trigger buffer load */
/*
* We fetch all nodes, since we display most of them in the default
* case, and all in the verbose case.
*/
idx->ccb.cdm.num_patterns = 0;
idx->ccb.cdm.pattern_buf_len = 0;
*idx_ = idx;
return 1;
}
static void sg_destroy_enumerator(burn_drive_enumerator_t *idx_)
{
struct burn_drive_enumeration_state *idx = *idx_;
if(idx->fd != -1)
close(idx->fd);
free(idx->ccb.cdm.matches);
free(idx);
*idx_ = NULL;
}
static int sg_next_enumeration_buffer(burn_drive_enumerator_t *idx_)
{
struct burn_drive_enumeration_state *idx = *idx_;
/*
* We do the ioctl multiple times if necessary, in case there are
* more than 100 nodes in the EDT.
*/
if (ioctl(idx->fd, CAMIOCOMMAND, &(idx->ccb)) == -1) {
warn("error sending CAMIOCOMMAND ioctl");
return -1;
}
if ((idx->ccb.ccb_h.status != CAM_REQ_CMP)
|| ((idx->ccb.cdm.status != CAM_DEV_MATCH_LAST)
&& (idx->ccb.cdm.status != CAM_DEV_MATCH_MORE))) {
warnx("got CAM error %#x, CDM error %d\n",
idx->ccb.ccb_h.status, idx->ccb.cdm.status);
return -1;
}
return 1;
}
/** Returns the next index object state and the next enumerated drive address.
@param idx An opaque handle. Make no own theories about it.
@param adr Takes the reply
@param adr_size Gives maximum size of reply including final 0
@param initialize 1 = start new,
0 = continue, use no other values for now
-1 = finish
@return 1 = reply is a valid address , 0 = no further address available
-1 = severe error (e.g. adr_size too small)
*/
int sg_give_next_adr(burn_drive_enumerator_t *idx_,
char adr[], int adr_size, int initialize)
{
struct burn_drive_enumeration_state *idx;
int ret;
if (initialize == 1) {
ret = sg_init_enumerator(idx_);
if (ret<=0)
return ret;
} else if (initialize == -1) {
sg_destroy_enumerator(idx_);
return 0;
}
idx = *idx_;
do {
if (idx->i >= idx->ccb.cdm.num_matches) {
ret = sg_next_enumeration_buffer(idx_);
if (ret<=0)
return -1;
idx->i = 0;
} else
(idx->i)++;
while (idx->i < idx->ccb.cdm.num_matches) {
switch (idx->ccb.cdm.matches[idx->i].type) {
case DEV_MATCH_BUS:
break;
case DEV_MATCH_DEVICE: {
struct device_match_result* result;
result = &(idx->ccb.cdm.matches[idx->i].result.device_result);
if (result->flags & DEV_RESULT_UNCONFIGURED)
idx->skip_device = 1;
else
idx->skip_device = 0;
break;
}
case DEV_MATCH_PERIPH: {
struct periph_match_result* result;
result = &(idx->ccb.cdm.matches[idx->i].result.periph_result);
/* ts B00112 : we really want only "cd" devices.
if (idx->skip_device ||
strcmp(result->periph_name, "pass") == 0)
break;
*/
if (idx->skip_device ||
strcmp(result->periph_name, "cd") != 0)
break;
ret = snprintf(adr, adr_size, "/dev/%s%d",
result->periph_name, result->unit_number);
if(ret >= adr_size)
return -1;
/* Found next enumerable address */
return 1;
}
default:
/* fprintf(stderr, "unknown match type\n"); */
break;
}
(idx->i)++;
}
} while ((idx->ccb.ccb_h.status == CAM_REQ_CMP)
&& (idx->ccb.cdm.status == CAM_DEV_MATCH_MORE));
return 0;
}
int sg_is_enumerable_adr(char* adr)
{
burn_drive_enumerator_t idx;
int ret;
char buf[64];
ret = sg_init_enumerator(&idx);
if (ret <= 0)
return 0;
while(1) {
ret = sg_give_next_adr(&idx, buf, sizeof(buf), 0);
if (ret <= 0)
break;
if (strcmp(adr, buf) == 0) {
sg_destroy_enumerator(&idx);
return 1;
}
}
sg_destroy_enumerator(&idx);
return (0);
}
/** Try to obtain SCSI address parameters.
@return 1 is success , 0 is failure
*/
int sg_obtain_scsi_adr(char *path, int *bus_no, int *host_no, int *channel_no,
int *target_no, int *lun_no)
{
burn_drive_enumerator_t idx;
int ret;
char buf[64];
struct periph_match_result* result;
ret = sg_init_enumerator(&idx);
if (ret <= 0)
return 0;
while(1) {
ret = sg_give_next_adr(&idx, buf, sizeof(buf), 0);
if (ret <= 0)
break;
if (strcmp(path, buf) == 0) {
result = &(idx->ccb.cdm.matches[idx->i].result.periph_result);
*bus_no = result->path_id;
*host_no = result->path_id;
*channel_no = 0;
*target_no = result->target_id;
*lun_no = result->target_lun;
sg_destroy_enumerator(&idx);
return 1;
}
}
sg_destroy_enumerator(&idx);
return (0);
}
int sg_close_drive(struct burn_drive * d)
{
if (d->cam != NULL) {
cam_close_device(d->cam);
d->cam = NULL;
}
if (d->lock_fd > 0) {
close(d->lock_fd);
d->lock_fd = -1;
}
return 0;
}
int sg_drive_is_open(struct burn_drive * d)
{
return (d->cam != NULL);
}
int scsi_enumerate_drives(void)
{
burn_drive_enumerator_t idx;
int ret;
char buf[64];
struct periph_match_result* result;
ret = sg_init_enumerator(&idx);
if (ret <= 0)
return 0;
while(1) {
ret = sg_give_next_adr(&idx, buf, sizeof(buf), 0);
if (ret <= 0)
break;
if (burn_drive_is_banned(buf))
continue;
result = &idx->ccb.cdm.matches[idx->i].result.periph_result;
enumerate_common(buf, result->path_id, result->path_id,
0, result->target_id,
result->target_lun);
}
sg_destroy_enumerator(&idx);
return 1;
}
#ifdef Scsi_freebsd_make_own_enumeratE
/* ts A61021: The old version which mixes SCSI and operating system adapter
*/
static void enumerate_common(char *fname, int bus_no, int host_no,
int channel_no, int target_no, int lun_no)
{
struct burn_drive *t;
struct burn_drive out;
/* Initialize pointers to managed memory */
out.devname = NULL;
out.idata = NULL;
out.mdata = NULL;
/* ts A60923 */
out.bus_no = bus_no;
out.host = host_no;
out.id = target_no;
out.channel = channel_no;
out.lun = lun_no;
out.devname = strdup(fname);
if (out.devname == NULL)
goto could_not_allocate;
out.cam = NULL;
out.lock_fd = -1;
out.is_ahci = 0;
out.start_lba= -2000000000;
out.end_lba= -2000000000;
out.read_atip = mmc_read_atip;
out.grab = sg_grab;
out.release = sg_release;
out.drive_is_open= sg_drive_is_open;
out.issue_command = sg_issue_command;
out.getcaps = spc_getcaps;
out.released = 1;
out.status = BURN_DISC_UNREADY;
out.eject = sbc_eject;
out.load = sbc_load;
out.lock = spc_prevent;
out.unlock = spc_allow;
out.read_disc_info = spc_sense_write_params;
out.get_erase_progress = spc_get_erase_progress;
out.test_unit_ready = spc_test_unit_ready;
out.probe_write_modes = spc_probe_write_modes;
out.read_toc = mmc_read_toc;
out.write = mmc_write;
out.erase = mmc_erase;
out.read_cd = mmc_read_cd;
out.perform_opc = mmc_perform_opc;
out.set_speed = mmc_set_speed;
out.send_parameters = spc_select_error_params;
out.send_write_parameters = spc_select_write_params;
out.send_cue_sheet = mmc_send_cue_sheet;
out.sync_cache = mmc_sync_cache;
out.get_nwa = mmc_get_nwa;
out.close_disc = mmc_close_disc;
out.close_session = mmc_close_session;
out.close_track_session = mmc_close;
out.read_buffer_capacity = mmc_read_buffer_capacity;
out.idata = calloc(1, sizeof(struct burn_scsi_inquiry_data));
out.idata->valid = 0;
out.mdata = calloc(1, sizeof(struct scsi_mode_data));
if (out.idata == NULL || out.mdata == NULL) {
could_not_allocate:;
libdax_msgs_submit(libdax_messenger, -1, 0x00020108,
LIBDAX_MSGS_SEV_FATAL, LIBDAX_MSGS_PRIO_HIGH,
"Could not allocate new drive object", 0, 0);
if (out.devname != NULL)
free(out.devname);
out.devname = NULL;
if (out.idata != NULL)
free(out.idata);
out.idata = NULL;
if (out.mdata != NULL)
free(out.mdata);
out.mdata = NULL;
return;
}
out.mdata->p2a_valid = 0;
memset(&out.params, 0, sizeof(struct params));
t = burn_drive_register(&out);
/* ts A60821
<<< debug: for tracing calls which might use open drive fds */
mmc_function_spy(NULL, "enumerate_common : -------- doing grab");
/* try to get the drive info */
if (t->grab(t)) {
t->getcaps(t);
t->unlock(t);
t->released = 1;
}
/* ts A60821
<<< debug: for tracing calls which might use open drive fds */
mmc_function_spy(NULL, "enumerate_common : ----- would release ");
}
#else /* Scsi_freebsd_make_own_enumeratE */
/* The new, more concise version of enumerate_common */
static void enumerate_common(char *fname, int bus_no, int host_no,
int channel_no, int target_no, int lun_no)
{
int ret;
struct burn_drive out;
/* General libburn drive setup */
burn_setup_drive(&out, fname);
/* This transport adapter uses SCSI-family commands and models
(seems the adapter would know better than its boss, if ever) */
ret = burn_scsi_setup_drive(&out, bus_no, host_no, channel_no,
target_no, lun_no, 0);
if (ret<=0)
return;
/* Operating system adapter is CAM */
/* Adapter specific handles and data */
out.cam = NULL;
out.lock_fd = -1;
out.is_ahci = 0;
/* Adapter specific functions */
out.grab = sg_grab;
out.release = sg_release;
out.drive_is_open = sg_drive_is_open;
out.issue_command = sg_issue_command;
/* Finally register drive and inquire drive information */
burn_drive_finish_enum(&out);
}
#endif /* ! Scsi_freebsd_make_own_enumeratE */
/* Lock the inode associated to dev_fd and the inode associated to devname.
Return OS errno, number of pass device of dev_fd, locked fd to devname,
error message.
A return value of > 0 means success, <= 0 means failure.
*/
static int freebsd_dev_lock(int dev_fd, char *devname,
int *os_errno, int *pass_dev_no, int *lock_fd, char msg[4096],
int flag)
{
int lock_denied = 0, fd_stbuf_valid, name_stbuf_valid, i, pass_l = 100;
int max_retry = 3, tries = 0;
struct stat fd_stbuf, name_stbuf;
char pass_name[16], *lock_name;
*os_errno = 0;
*pass_dev_no = -1;
*lock_fd = -1;
msg[0] = 0;
fd_stbuf_valid = !fstat(dev_fd, &fd_stbuf);
/* Try to find name of pass device by inode number */
lock_name = (char *) "effective device";
if(fd_stbuf_valid) {
for (i = 0; i < pass_l; i++) {
sprintf(pass_name, "/dev/pass%d", i);
if (stat(pass_name, &name_stbuf) != -1)
if(fd_stbuf.st_ino == name_stbuf.st_ino &&
fd_stbuf.st_dev == name_stbuf.st_dev)
break;
}
if (i < pass_l) {
lock_name = pass_name;
*pass_dev_no = i;
}
}
name_stbuf_valid = !stat(devname, &name_stbuf);
for (tries= 0; tries <= max_retry; tries++) {
lock_denied = flock(dev_fd, LOCK_EX | LOCK_NB);
*os_errno = errno;
if (lock_denied) {
if (errno == EAGAIN && tries < max_retry) {
/* <<< debugging
fprintf(stderr,
"\nlibcdio_DEBUG: EAGAIN pass, tries= %d\n",
tries);
*/
usleep(2000000);
continue;
}
sprintf(msg,
"Device busy. flock(LOCK_EX) failed on %s of %s",
strlen(lock_name) > 2000 || *pass_dev_no < 0 ?
"pass device" : lock_name,
strlen(devname) > 2000 ? "drive" : devname);
return 0;
}
break;
}
/*
fprintf(stderr, "libburn_DEBUG: flock obtained on %s of %s\n",
lock_name, devname);
*/
/* Eventually lock the official device node too */
if (fd_stbuf_valid && name_stbuf_valid &&
(fd_stbuf.st_ino != name_stbuf.st_ino ||
fd_stbuf.st_dev != name_stbuf.st_dev)) {
*lock_fd = open(devname, O_RDONLY);
if (*lock_fd == 0) {
close(*lock_fd);
*lock_fd = -1;
} if (*lock_fd > 0) {
for (tries = 0; tries <= max_retry; tries++) {
lock_denied =
flock(*lock_fd, LOCK_EX | LOCK_NB);
if (lock_denied) {
if (errno == EAGAIN &&
tries < max_retry) {
/* <<< debugging
fprintf(stderr,
"\nlibcdio_DEBUG: EAGAIN dev, tries= %d\n",
tries);
*/
usleep(2000000);
continue;
}
close(*lock_fd);
*lock_fd = -1;
sprintf(msg,
"Device busy. flock(LOCK_EX) failed on %s",
strlen(devname) > 4000 ? "drive" : devname);
return 0;
}
break;
}
}
/*
fprintf(stderr, "libburn_DEBUG: flock obtained on %s\n",
devname);
*/
}
return 1;
}
static int sg_lock(struct burn_drive *d, int flag)
{
int ret, os_errno, pass_dev_no = -1, flock_fd = -1;
char *msg = NULL;
BURN_ALLOC_MEM(msg, char, 4096);
ret = freebsd_dev_lock(d->cam->fd, d->devname,
&os_errno, &pass_dev_no, &flock_fd, msg, 0);
if (ret <= 0) {
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020008,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
msg, os_errno, 0);
sg_close_drive(d);
{ret = 0; goto ex;}
}
if (d->lock_fd > 0)
close(d->lock_fd);
d->lock_fd = flock_fd;
ret = 1;
ex:;
BURN_FREE_MEM(msg);
return ret;
}
int sg_grab(struct burn_drive *d)
{
struct cam_device *cam;
char path_string[80];
if (mmc_function_spy(d, "sg_grab") <= 0)
return 0;
if (burn_drive_is_open(d)) {
d->released = 0;
return 1;
}
cam = cam_open_device(d->devname, O_RDWR);
if (cam == NULL) {
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020003,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
"Could not grab drive", errno, 0);
return 0;
}
d->cam = cam;
if (burn_sg_open_o_excl & 63)
if (sg_lock(d, 0) <= 0)
return 0;
fcntl(cam->fd, F_SETOWN, getpid());
cam_path_string(d->cam, path_string, sizeof(path_string));
#ifdef Libburn_ahci_verbouS
fprintf(stderr, "libburn_EXPERIMENTAL: CAM path = %s\n", path_string);
#endif
if (strstr(path_string, ":ahcich") != NULL)
d->is_ahci = 1;
else
d->is_ahci = -1;
d->released = 0;
return 1;
}
/*
non zero return means you still have the drive and it's not
in a state to be released? (is that even possible?)
*/
int sg_release(struct burn_drive *d)
{
if (mmc_function_spy(d, "sg_release") <= 0)
return 0;
if (d->cam == NULL)
return 0;
mmc_function_spy(NULL, "sg_release ----------- closing.");
sg_close_drive(d);
d->released = 1;
return 0;
}
int sg_issue_command(struct burn_drive *d, struct command *c)
{
int done = 0, err, sense_len = 0, ret, ignore_error, i;
int cam_pass_err_recover = 0, key, asc, ascq, timeout_ms;
union ccb *ccb;
static FILE *fp = NULL;
time_t start_time;
mmc_function_spy(NULL, "sg_issue_command");
c->error = 0;
memset(c->sense, 0, sizeof(c->sense));
if (d->cam == NULL)
return 0;
if (burn_sg_log_scsi & 1) {
if (fp == NULL) {
fp= fopen("/tmp/libburn_sg_command_log", "a");
fprintf(fp,
"\n-----------------------------------------\n");
}
}
if (burn_sg_log_scsi & 3)
scsi_log_cmd(c,fp,0);
c->error = 0;
if (c->timeout > 0)
timeout_ms = c->timeout;
else
timeout_ms = 200000;
ccb = cam_getccb(d->cam);
cam_fill_csio(&ccb->csio,
1, /* retries */
NULL, /* cbfncp */
CAM_DEV_QFRZDIS, /* flags */
MSG_SIMPLE_Q_TAG, /* tag_action */
NULL, /* data_ptr */
0, /* dxfer_len */
sizeof (ccb->csio.sense_data), /* sense_len */
0, /* cdb_len */
timeout_ms); /* timeout */
switch (c->dir) {
case TO_DRIVE:
ccb->csio.ccb_h.flags |= CAM_DIR_OUT;
break;
case FROM_DRIVE:
ccb->csio.ccb_h.flags |= CAM_DIR_IN;
break;
case NO_TRANSFER:
ccb->csio.ccb_h.flags |= CAM_DIR_NONE;
break;
}
#ifdef Libburn_for_freebsd_ahcI
/* ts B00325 : Advise by Alexander Motin */
/* Runs well on 8-STABLE (23 Mar 2003)
But on 8-RELEASE cam_send_ccb() returns non-zero with errno 6
on eject. Long lasting TEST UNIT READY cycles break with
errno 16.
*/
#ifdef Libburn_ahci_style_for_alL
{
#else
if (d->is_ahci > 0) {
#endif
ccb->ccb_h.flags |= CAM_PASS_ERR_RECOVER;
cam_pass_err_recover = 1;
}
#endif /* Libburn_for_freebsd_ahcI */
ccb->csio.cdb_len = c->oplen;
memcpy(&ccb->csio.cdb_io.cdb_bytes, &c->opcode, c->oplen);
if (c->page) {
ccb->csio.data_ptr = c->page->data;
if (c->dir == FROM_DRIVE) {
/* ts A90430 : Ticket 148 , by jwehle :
"On ... FreeBSD 6.4 which has a usb memory reader in
addition to a ATAPI DVD burner sg_issue_command
will hang while the SCSI bus is being scanned"
*/
if (c->dxfer_len >= 0)
ccb->csio.dxfer_len = c->dxfer_len;
else
ccb->csio.dxfer_len = BUFFER_SIZE;
/* touch page so we can use valgrind */
memset(c->page->data, 0, BUFFER_SIZE);
} else {
ccb->csio.dxfer_len = c->page->bytes;
}
} else {
ccb->csio.data_ptr = NULL;
ccb->csio.dxfer_len = 0;
}
start_time = time(NULL);
for (i = 0; !done; i++) {
memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
memset(c->sense, 0, sizeof(c->sense));
c->start_time = burn_get_time(0);
err = cam_send_ccb(d->cam, ccb);
c->end_time = burn_get_time(0);
ignore_error = sense_len = 0;
/* ts B00325 : CAM_AUTOSNS_VALID advised by Alexander Motin */
if (ccb->ccb_h.status & CAM_AUTOSNS_VALID) {
/* ts B00110 */
/* Better curb sense_len */
sense_len = ccb->csio.sense_len;
if (sense_len > (int) sizeof(c->sense))
sense_len = sizeof(c->sense);
memcpy(c->sense, &ccb->csio.sense_data, sense_len);
spc_decode_sense(c->sense, sense_len,
&key, &asc, &ascq);
if (sense_len >= 14 && cam_pass_err_recover && key)
ignore_error = 1;
}
if (err == -1 && cam_pass_err_recover && ! ignore_error) {
#ifdef Libburn_ahci_verbouS
fprintf(stderr, "libburn_EXPERIMENTAL: errno = %d . cam_errbuf = '%s'\n", errno, cam_errbuf);
#endif
if (errno == ENXIO && c->opcode[0] != 0) {
/* Operations on empty or ejected tray */
/* MEDIUM NOT PRESENT */
#ifdef Libburn_ahci_verbouS
fprintf(stderr, "libburn_EXPERIMENTAL: Emulating [2,3A,00] MEDIUM NOT PRESENT\n");
#endif
c->sense[0] = 0x70; /*Fixed format sense data*/
c->sense[2] = 0x02;
c->sense[12] = 0x3A;
c->sense[13] = 0x00;
sense_len = 14;
ignore_error = 1;
} else if (c->opcode[0] == 0 &&
(errno == EBUSY || errno == ENXIO)) {
/* Timeout of TEST UNIT READY loop */
/* Inquiries while tray is being loaded */
/*LOGICAL UNIT NOT READY,CAUSE NOT REPORTABLE*/
#ifdef Libburn_ahci_verbouS
fprintf(stderr, "libburn_EXPERIMENTAL: Emulating [2,04,00] LOGICAL UNIT NOT READY,CAUSE NOT REPORTABLE\n");
#endif
c->sense[0] = 0x70; /*Fixed format sense data*/
c->sense[2] = 0x02;
c->sense[12] = 0x04;
c->sense[13] = 0x00;
sense_len = 14;
ignore_error = 1;
} else if (errno == EINVAL) {
/* Inappropriate MODE SENSE */
/* INVALID FIELD IN CDB */
#ifdef Libburn_ahci_verbouS
fprintf(stderr, "libburn_EXPERIMENTAL: Emulating [5,24,00] INVALID FIELD IN CDB\n");
#endif
c->sense[0] = 0x70; /*Fixed format sense data*/
c->sense[2] = 0x05;
c->sense[12] = 0x24;
c->sense[13] = 0x00;
sense_len = 14;
ignore_error = 1;
}
}
if (err == -1 && !ignore_error) {
libdax_msgs_submit(libdax_messenger,
d->global_index, 0x0002010c,
LIBDAX_MSGS_SEV_FATAL, LIBDAX_MSGS_PRIO_HIGH,
"Failed to transfer command to drive",
errno, 0);
sg_close_drive(d);
d->released = 1;
d->busy = BURN_DRIVE_IDLE;
c->error = 1;
{ret = -1; goto ex;}
}
/* XXX */
if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if (sense_len < 14) {
/*LOGICAL UNIT NOT READY,CAUSE NOT REPORTABLE*/
#ifdef Libburn_ahci_verbouS
fprintf(stderr, "libburn_EXPERIMENTAL: CAM_STATUS= %d .Emulating [2,04,00] LOGICAL UNIT NOT READY,CAUSE NOT REPORTABLE\n", (ccb->ccb_h.status & CAM_STATUS_MASK));
#endif
c->sense[0] = 0x70; /*Fixed format sense data*/
c->sense[2] = 0x02;
c->sense[12] = 0x04;
c->sense[13] = 0x00;
done = 1;
}
}
done = scsi_eval_cmd_outcome(d, c, fp, c->sense,
sense_len, start_time,
timeout_ms, i, !!ignore_error);
if (d->cancel)
done = 1;
} while (!done);
ret = 1;
ex:;
cam_freeccb(ccb);
return ret;
}
/* ts B00115 */
/* Return 1 if the given path leads to a regular file or a device that can be
seeked, read and eventually written with 2 kB granularity.
*/
int burn_os_is_2k_seekrw(char *path, int flag)
{
struct stat stbuf;
#ifdef Libburn_DIOCGMEDIASIZE_ISBLK
int fd, ret;
off_t add_size;
#else
char *spt;
int i, e;
#endif /* ! Libburn_DIOCGMEDIASIZE_ISBLK */
if (stat(path, &stbuf) == -1)
return 0;
if (S_ISREG(stbuf.st_mode))
return 1;
if (!S_ISCHR(stbuf.st_mode))
return 0;
#ifdef Libburn_DIOCGMEDIASIZE_ISBLK
/* If it throws no error with DIOCGMEDIASIZE then it is a
'block device'
*/
fd = open(path, O_RDONLY);
if (fd == -1)
return 0;
ret = ioctl(fd, DIOCGMEDIASIZE, &add_size);
close(fd);
return (ret != -1);
#else /* Libburn_DIOCGMEDIASIZE_ISBLK */
spt = strrchr(path, '/');
if (spt == NULL)
spt = path;
else
spt++;
e = strlen(spt);
for (i = strlen(spt) - 1; i > 0; i--)
if (spt[i] >= '0' && spt[i] <= '9')
e = i;
if (strncmp(spt, "da", e) == 0) /* SCSI disk. E.g. USB stick. */
return 1;
if (strncmp(spt, "cd", e) == 0) /* SCSI CD drive might be writeable. */
return 1;
if (strncmp(spt, "ad", e) == 0) /* IDE hard drive */
return 1;
if (strncmp(spt, "acd", e) == 0) /* IDE CD drive might be writeable */
return 1;
if (strncmp(spt, "fd", e) == 0) /* Floppy disk */
return 1;
if (strncmp(spt, "fla", e) == 0) /* Flash drive */
return 1;
return 0;
#endif /* ! Libburn_DIOCGMEDIASIZE_ISBLK */
}
/* ts A70909 */
/** Estimate the potential payload capacity of a file address.
@param path The address of the file to be examined. If it does not
exist yet, then the directory will be inquired.
@param bytes This value gets modified if an estimation is possible
@return -2 = cannot perform necessary operations on file object
-1 = neither path nor dirname of path exist
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 write_start, off_t *bytes)
{
struct stat stbuf;
struct statvfs vfsbuf;
char *testpath = NULL, *cpt;
off_t add_size = 0;
int fd, ret;
BURN_ALLOC_MEM(testpath, char, 4096);
testpath[0] = 0;
if (stat(path, &stbuf) == -1) {
strcpy(testpath, path);
cpt = strrchr(testpath, '/');
if(cpt == NULL)
strcpy(testpath, ".");
else if(cpt == testpath)
testpath[1] = 0;
else
*cpt = 0;
if (stat(testpath, &stbuf) == -1)
{ret = -1; goto ex;}
#ifdef Libburn_if_this_was_linuX
} else if(S_ISBLK(stbuf.st_mode)) {
int open_mode = O_RDWR, fd, ret;
long blocks;
blocks = *bytes / 512;
if(burn_sg_open_o_excl)
open_mode |= O_EXCL;
fd = open(path, open_mode);
if (fd == -1)
{ret = -2; goto ex;}
ret = ioctl(fd, BLKGETSIZE, &blocks);
close(fd);
if (ret == -1)
{ret = -2; goto ex;}
*bytes = ((off_t) blocks) * (off_t) 512;
#endif /* Libburn_if_this_was_linuX */
} else if(S_ISCHR(stbuf.st_mode)) {
fd = open(path, O_RDONLY);
if (fd == -1)
{ret = -2; goto ex;}
ret = ioctl(fd, DIOCGMEDIASIZE, &add_size);
close(fd);
if (ret == -1)
{ret = -2; goto ex;}
*bytes = add_size;
} else if(S_ISREG(stbuf.st_mode)) {
add_size = burn_sparse_file_addsize(write_start, &stbuf);
strcpy(testpath, path);
} else
{ret = 0; goto ex;}
if (testpath[0]) {
if (statvfs(testpath, &vfsbuf) == -1)
{ret = -2; goto ex;}
*bytes = add_size + ((off_t) vfsbuf.f_frsize) *
(off_t) vfsbuf.f_bavail;
}
ret = 1;
ex:
BURN_FREE_MEM(testpath);
return ret;
}
/* ts A91122 : an interface to open(O_DIRECT) or similar OS tricks. */
#ifdef Libburn_read_o_direcT
/* No special O_DIRECT-like precautions are implemented here */
#endif /* Libburn_read_o_direcT */
int burn_os_open_track_src(char *path, int open_flags, int flag)
{
int fd;
fd = open(path, open_flags);
return fd;
}
void *burn_os_alloc_buffer(size_t amount, int flag)
{
void *buf = NULL;
buf = calloc(1, amount);
return buf;
}
int burn_os_free_buffer(void *buffer, size_t amount, int flag)
{
if (buffer == NULL)
return 0;
free(buffer);
return 1;
}
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