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/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
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/*
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Copyright (c) 2010 Thomas Schmitt <scdbackup@gmx.net>
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Provided under GPL version 2 or later.
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*/
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/*
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This is the main operating system dependent SCSI part of libburn. It implements
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the transport level aspects of SCSI control and command i/o.
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Present implementation: Solaris uscsi, e.g. for SunOS 5.11
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PORTING:
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Porting libburn typically will consist of adding a new operating system case
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to the following switcher files:
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os.h Operating system specific libburn definitions and declarations.
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sg.c Operating system dependent transport level modules.
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and of deriving the following system specific files from existing examples:
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os-*.h Included by os.h. You will need some general system knowledge
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about signals and knowledge about the storage object needs of your
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transport level module sg-*.c.
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sg-*.c This source module. You will need special system knowledge about
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how to detect all potentially available drives, how to open them,
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eventually how to exclusively reserve them, how to perform
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SCSI transactions, how to inquire the (pseudo-)SCSI driver.
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You will not need to care about CD burning, MMC or other high-level
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SCSI aspects.
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Said sg-*.c operations are defined by a public function interface, which has
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to be implemented in a way that provides libburn with the desired services:
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sg_id_string() returns an id string of the SCSI transport adapter.
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It may be called before initialization but then may
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return only a preliminary id.
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sg_initialize() performs global initialization of the SCSI transport
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adapter and eventually needed operating system
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facilities. Checks for compatibility of supporting
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software components.
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sg_shutdown() performs global finalizations and releases golbally
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aquired resources.
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sg_give_next_adr() iterates over the set of potentially useful drive
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address strings.
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scsi_enumerate_drives() brings all available, not-whitelist-banned, and
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accessible drives into libburn's list of drives.
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sg_dispose_drive() finalizes adapter specifics of struct burn_drive
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on destruction. Releases resources which were aquired
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underneath scsi_enumerate_drives().
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sg_drive_is_open() tells wether libburn has the given drive in use.
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sg_grab() opens the drive for SCSI commands and ensures
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undisturbed access.
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sg_release() closes a drive opened by sg_grab()
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sg_issue_command() sends a SCSI command to the drive, receives reply,
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and evaluates wether the command succeeded or shall
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be retried or finally failed.
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sg_obtain_scsi_adr() tries to obtain SCSI address parameters.
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burn_os_is_2k_seekrw() tells whether the given path leads to a file object
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that can be used in 2 kB granularity by lseek(2),
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read(2), and possibly write(2) if not read-only..
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E.g. a USB stick or a hard disk.
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burn_os_stdio_capacity() estimates the emulated media space of stdio-drives.
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burn_os_open_track_src() opens a disk file in a way that allows best
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throughput with file reading and/or SCSI write command
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transmission.
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burn_os_alloc_buffer() allocates a memory area that is suitable for file
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descriptors issued by burn_os_open_track_src().
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The buffer size may be rounded up for alignment
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reasons.
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burn_os_free_buffer() delete a buffer obtained by burn_os_alloc_buffer().
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Porting hints are marked by the text "PORTING:".
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Send feedback to libburn-hackers@pykix.org .
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*/
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#ifdef HAVE_CONFIG_H
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#include "../config.h"
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#endif
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/** PORTING : ------- OS dependent headers and definitions ------ */
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#include <unistd.h>
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#include <stropts.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <stdlib.h>
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#include <dirent.h>
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#ifdef Libburn_os_has_statvfS
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#include <sys/statvfs.h>
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#endif /* Libburn_os_has_stavtfS */
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#include <sys/dkio.h>
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#include <sys/vtoc.h>
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#include <sys/scsi/impl/uscsi.h>
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/* >>> need a size determination call for random access devices.
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e.g. USB sticks.
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*/
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#ifdef __linux
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/* for ioctl(BLKGETSIZE) */
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#include <sys/ioctl.h>
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#include <linux/fs.h>
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#endif
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/* The waiting time before eventually retrying a failed SCSI command.
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Before each retry wait Libburn_sg_linux_retry_incR longer than with
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the previous one.
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*/
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#define Libburn_sg_solaris_retry_usleeP 100000
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#define Libburn_sg_solaris_retry_incR 100000
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/** PORTING : ------ libburn portable headers and definitions ----- */
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#include "transport.h"
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#include "drive.h"
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#include "sg.h"
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#include "spc.h"
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#include "sbc.h"
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#include "debug.h"
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#include "toc.h"
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#include "util.h"
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#include "libdax_msgs.h"
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extern struct libdax_msgs *libdax_messenger;
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/* is in portable part of libburn */
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int burn_drive_is_banned(char *device_address);
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int burn_drive_resolve_link(char *path, char adr[],
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int *recursion_count, int flag); /* drive.c */
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/* Whether to log SCSI commands:
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bit0= log in /tmp/libburn_sg_command_log
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bit1= log to stderr
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bit2= flush every line
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*/
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extern int burn_sg_log_scsi;
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/* ------------------------------------------------------------------------ */
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/* PORTING: Private definitions. Port only if needed by public functions. */
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/* (Public functions are listed below) */
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/* ------------------------------------------------------------------------ */
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/* Storage object is in libburn/init.c
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whether to strive for exclusive access to the drive
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*/
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extern int burn_sg_open_o_excl;
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/* ------------------------------------------------------------------------ */
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/* PORTING: Private functions. Port only if needed by public functions */
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/* (Public functions are listed below) */
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/* ------------------------------------------------------------------------ */
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static int sg_close_drive(struct burn_drive * d)
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{
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if (d->fd != -1) {
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close(d->fd);
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d->fd = -1;
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return 1;
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}
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return 0;
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}
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static int decode_btl_number(char **cpt, int stopper, int *no)
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{
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*no = 0;
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for ((*cpt)++; **cpt != stopper; (*cpt)++) {
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if (**cpt < '0' || **cpt > '9')
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return 0;
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*no = *no * 10 + **cpt - '0';
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}
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return 1;
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}
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/* Read bus, target, lun from name "cXtYdZs2".
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Return 0 if name is not of the desired form.
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*/
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static int decode_btl_solaris(char *name, int *busno, int *tgtno, int *lunno,
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int flag)
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{
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char *cpt;
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int ret;
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*busno = *tgtno = *lunno = -1;
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cpt = name;
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if (*cpt != 'c')
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return 0;
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ret = decode_btl_number(&cpt, 't', busno);
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if (ret <= 0)
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return ret;
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ret = decode_btl_number(&cpt, 'd', tgtno);
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if (ret <= 0)
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return ret;
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ret = decode_btl_number(&cpt, 's', lunno);
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if (ret <= 0)
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return ret;
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cpt++;
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if (*cpt != '2' || *(cpt + 1) != 0)
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return 0;
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return 1;
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}
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static int start_enum_cXtYdZs2(burn_drive_enumerator_t *idx, int flag)
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{
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DIR *dir;
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idx->dir = NULL;
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dir = opendir("/dev/rdsk");
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if (dir == NULL) {
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libdax_msgs_submit(libdax_messenger, -1,
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0x0002000c, LIBDAX_MSGS_SEV_FAILURE, LIBDAX_MSGS_PRIO_HIGH,
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"Cannot start device file enumeration. opendir(\"/dev/rdsk\") failed.",
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errno, 0);
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return 0;
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}
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idx->dir = dir;
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return 1;
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}
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static int next_enum_cXtYdZs2(burn_drive_enumerator_t *idx,
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char adr[], int adr_size, int flag)
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{
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int busno, tgtno, lunno, ret, fd = -1;
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char volpath[160];
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struct dirent *entry;
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struct dk_cinfo cinfo;
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DIR *dir;
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dir = idx->dir;
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while (1) {
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errno = 0;
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entry = readdir(dir);
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if (entry == NULL) {
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if (errno) {
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libdax_msgs_submit(libdax_messenger,
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-1, 0x0002000d,
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LIBDAX_MSGS_SEV_FAILURE, LIBDAX_MSGS_PRIO_HIGH,
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"Cannot enumerate next device. readdir() from \"/dev/rdsk\" failed.",
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errno, 0);
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return -1;
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}
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break;
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}
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if (strlen(entry->d_name) > sizeof(volpath) - 11)
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continue;
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ret = decode_btl_solaris(entry->d_name,
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&busno, &tgtno, &lunno, 0);
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if (ret <= 0)
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continue; /* not cXtYdZs2 */
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sprintf(volpath, "/dev/rdsk/%s", entry->d_name);
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if (burn_drive_is_banned(volpath))
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continue;
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fd = open(volpath, O_RDONLY | O_NDELAY);
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if (fd < 0)
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continue;
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/* See man dkio */
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ret = ioctl(fd, DKIOCINFO, &cinfo);
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close(fd);
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if (ret < 0)
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continue;
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if (cinfo.dki_ctype != DKC_CDROM)
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continue;
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if (adr_size <= strlen(volpath))
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return -1;
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strcpy(adr, volpath);
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return 1;
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}
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return 0;
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}
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static int end_enum_cXtYdZs2(burn_drive_enumerator_t *idx, int flag)
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{
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DIR *dir;
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dir = idx->dir;
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if(dir != NULL)
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closedir(dir);
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idx->dir = NULL;
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return 1;
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}
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/* ----------------------------------------------------------------------- */
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/* PORTING: Private functions which contain publicly needed functionality. */
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/* Their portable part must be performed. So it is probably best */
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/* to replace the non-portable part and to call these functions */
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/* in your port, too. */
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/* ----------------------------------------------------------------------- */
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/** Wraps a detected drive into libburn structures and hands it over to
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libburn drive list.
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*/
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static void enumerate_common(char *fname,
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int bus_no, int host_no,
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int channel_no, int target_no, int lun_no)
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{
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int ret;
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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;
|
|
|
|
|
|
|
|
|
|
/* PORTING: ------------------- non portable part --------------- */
|
|
|
|
|
|
|
|
|
|
/* Transport adapter is Solaris uscsi */
|
|
|
|
|
/* Adapter specific handles and data */
|
|
|
|
|
out.fd = -1;
|
|
|
|
|
|
|
|
|
|
/* PORTING: ---------------- end of non portable part ------------ */
|
|
|
|
|
|
|
|
|
|
/* Adapter specific functions with standardized names */
|
|
|
|
|
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);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
|
/* PORTING: Public functions. These MUST be ported. */
|
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** 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)
|
|
|
|
|
{
|
|
|
|
|
sprintf(msg, "internal Solaris uscsi adapter sg-solaris");
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** Performs global initialization of the SCSI transport adapter and eventually
|
|
|
|
|
needed operating system facilities. Checks for compatibility of 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);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** 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;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** Returns the next index number and the next enumerated drive address.
|
|
|
|
|
The enumeration has to cover all available and accessible drives. It is
|
|
|
|
|
allowed to return addresses of drives which are not available but under
|
|
|
|
|
some (even exotic) circumstances could be available. It is on the other
|
|
|
|
|
hand allowed, only to hand out addresses which can really be used right
|
|
|
|
|
in the moment of this call. (This implementation chooses the latter.)
|
|
|
|
|
@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)
|
|
|
|
|
{
|
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
|
|
if (initialize == 1) {
|
|
|
|
|
ret = start_enum_cXtYdZs2(idx, 0);
|
|
|
|
|
if (ret <= 0)
|
|
|
|
|
return ret;
|
|
|
|
|
} else if (initialize == -1) {
|
|
|
|
|
ret = end_enum_cXtYdZs2(idx, 0);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
ret = next_enum_cXtYdZs2(idx, adr, adr_size, 0);
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** Brings all available, not-whitelist-banned, and accessible drives into
|
|
|
|
|
libburn's list of drives.
|
|
|
|
|
*/
|
|
|
|
|
int scsi_enumerate_drives(void)
|
|
|
|
|
{
|
|
|
|
|
burn_drive_enumerator_t idx;
|
|
|
|
|
int initialize = 1, ret, i_bus_no = -1;
|
|
|
|
|
int i_host_no = -1, i_channel_no = -1, i_target_no = -1, i_lun_no = -1;
|
|
|
|
|
char buf[4096];
|
|
|
|
|
|
|
|
|
|
while(1) {
|
|
|
|
|
ret = sg_give_next_adr(&idx, buf, sizeof(buf), initialize);
|
|
|
|
|
initialize = 0;
|
|
|
|
|
if (ret <= 0)
|
|
|
|
|
break;
|
|
|
|
|
if (burn_drive_is_banned(buf))
|
|
|
|
|
continue;
|
|
|
|
|
sg_obtain_scsi_adr(buf, &i_bus_no, &i_host_no,
|
|
|
|
|
&i_channel_no, &i_target_no, &i_lun_no);
|
|
|
|
|
enumerate_common(buf,
|
|
|
|
|
i_bus_no, i_host_no, i_channel_no,
|
|
|
|
|
i_target_no, i_lun_no);
|
|
|
|
|
}
|
|
|
|
|
sg_give_next_adr(&idx, buf, sizeof(buf), -1);
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** Tells whether libburn has the given drive in use or exclusively reserved.
|
|
|
|
|
If it is "open" then libburn will eventually call sg_release() on it when
|
|
|
|
|
it is time to give up usage resp. reservation.
|
|
|
|
|
*/
|
|
|
|
|
/** Published as burn_drive.drive_is_open() */
|
|
|
|
|
int sg_drive_is_open(struct burn_drive * d)
|
|
|
|
|
{
|
|
|
|
|
return (d->fd != -1);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** Opens the drive for SCSI commands and - if burn activities are prone
|
|
|
|
|
to external interference on your system - obtains an exclusive access lock
|
|
|
|
|
on the drive. (Note: this is not physical tray locking.)
|
|
|
|
|
A drive that has been opened with sg_grab() will eventually be handed
|
|
|
|
|
over to sg_release() for closing and unreserving.
|
|
|
|
|
*/
|
|
|
|
|
int sg_grab(struct burn_drive *d)
|
|
|
|
|
{
|
|
|
|
|
char msg[4096];
|
|
|
|
|
int os_errno, ret;
|
|
|
|
|
struct dk_cinfo cinfo;
|
|
|
|
|
|
|
|
|
|
if (d->fd != -1) {
|
|
|
|
|
d->released = 0;
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
d->fd = open(d->devname, O_RDONLY | O_NDELAY);
|
|
|
|
|
if (d->fd == -1) {
|
|
|
|
|
os_errno = errno;
|
|
|
|
|
sprintf(msg, "Could not grab drive '%s'", d->devname);
|
|
|
|
|
libdax_msgs_submit(libdax_messenger, d->global_index,
|
|
|
|
|
0x00020003,
|
|
|
|
|
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
|
|
|
|
|
msg, os_errno, 0);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
ret = ioctl(d->fd, DKIOCINFO, &cinfo);
|
|
|
|
|
if (ret < 0)
|
|
|
|
|
goto revoke;
|
|
|
|
|
if (cinfo.dki_ctype != DKC_CDROM)
|
|
|
|
|
goto revoke;
|
|
|
|
|
|
|
|
|
|
/* >>> obtain eventual locks */;
|
|
|
|
|
|
|
|
|
|
d->released = 0;
|
|
|
|
|
return 1;
|
|
|
|
|
revoke:;
|
|
|
|
|
sprintf(msg, "Could not grab drive '%s'. Not a CDROM device.",
|
|
|
|
|
d->devname);
|
|
|
|
|
libdax_msgs_submit(libdax_messenger, d->global_index,
|
|
|
|
|
0x00020003,
|
|
|
|
|
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
|
|
|
|
|
msg, 0, 0);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** PORTING: Is mainly about the call to sg_close_drive() and whether it
|
|
|
|
|
implements the demanded functionality.
|
|
|
|
|
*/
|
|
|
|
|
/** Gives up the drive for SCSI commands and releases eventual access locks.
|
|
|
|
|
(Note: this is not physical tray locking.)
|
|
|
|
|
*/
|
|
|
|
|
int sg_release(struct burn_drive *d)
|
|
|
|
|
{
|
|
|
|
|
if (d->fd < 0) {
|
|
|
|
|
burn_print(1, "release an ungrabbed drive. die\n");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
sg_close_drive(d);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** Sends a SCSI command to the drive, receives reply and evaluates wether
|
|
|
|
|
the command succeeded or shall be retried or finally failed.
|
|
|
|
|
Returned SCSI errors shall not lead to a return value indicating failure.
|
|
|
|
|
The callers get notified by c->error. An SCSI failure which leads not to
|
|
|
|
|
a retry shall be notified via scsi_notify_error().
|
|
|
|
|
The Libburn_log_sg_commandS facility might be of help when problems with
|
|
|
|
|
a drive have to be examined. It shall stay disabled for normal use.
|
|
|
|
|
@return: 1 success , <=0 failure
|
|
|
|
|
*/
|
|
|
|
|
int sg_issue_command(struct burn_drive *d, struct command *c)
|
|
|
|
|
{
|
|
|
|
|
int i, usleep_time, timeout_ms, no_retry = 0, ret;
|
|
|
|
|
time_t start_time;
|
|
|
|
|
struct uscsi_cmd cgc;
|
|
|
|
|
static FILE *fp = NULL;
|
|
|
|
|
|
|
|
|
|
c->error = 0;
|
|
|
|
|
memset(c->sense, 0, sizeof(c->sense));
|
|
|
|
|
if (d->fd == -1)
|
|
|
|
|
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);
|
|
|
|
|
|
|
|
|
|
memset (&cgc, 0, sizeof (struct uscsi_cmd));
|
|
|
|
|
/* No error messages, no retries,
|
|
|
|
|
do not execute with other commands, request sense data
|
|
|
|
|
*/
|
|
|
|
|
cgc.uscsi_flags = USCSI_SILENT | USCSI_DIAGNOSE | USCSI_ISOLATE
|
|
|
|
|
| USCSI_RQENABLE;
|
|
|
|
|
cgc.uscsi_timeout = 200;
|
|
|
|
|
cgc.uscsi_cdb = (caddr_t) c->opcode;
|
|
|
|
|
cgc.uscsi_bufaddr = (caddr_t) c->page->data;
|
|
|
|
|
if (c->dir == TO_DRIVE) {
|
|
|
|
|
cgc.uscsi_flags |= USCSI_WRITE;
|
|
|
|
|
cgc.uscsi_buflen = c->page->bytes;
|
|
|
|
|
} else if (c->dir == FROM_DRIVE) {
|
|
|
|
|
cgc.uscsi_flags |= USCSI_READ;
|
|
|
|
|
if (c->dxfer_len >= 0)
|
|
|
|
|
cgc.uscsi_buflen = c->dxfer_len;
|
|
|
|
|
else
|
|
|
|
|
cgc.uscsi_buflen = BUFFER_SIZE;
|
|
|
|
|
/* touch page so we can use valgrind */
|
|
|
|
|
memset(c->page->data, 0, BUFFER_SIZE);
|
|
|
|
|
} else {
|
|
|
|
|
cgc.uscsi_buflen = 0;
|
|
|
|
|
}
|
|
|
|
|
cgc.uscsi_cdblen = c->oplen;
|
|
|
|
|
cgc.uscsi_rqlen = sizeof(c->sense);
|
|
|
|
|
cgc.uscsi_rqbuf = (caddr_t) c->sense;
|
|
|
|
|
|
|
|
|
|
/* retry-loop */
|
|
|
|
|
start_time = time(NULL);
|
|
|
|
|
timeout_ms = 200000;
|
|
|
|
|
for(i = 0; ; i++) {
|
|
|
|
|
|
|
|
|
|
ret = ioctl(d->fd, USCSICMD, &cgc);
|
|
|
|
|
|
|
|
|
|
/* For cgc.uscsi_status see SAM-3 5.3.1, Table 22
|
|
|
|
|
0 = GOOD , 2 = CHECK CONDITION : Sense Data are delivered
|
|
|
|
|
8 = BUSY
|
|
|
|
|
*/
|
|
|
|
|
if (ret != 0 &&
|
|
|
|
|
cgc.uscsi_status != 2 && cgc.uscsi_status != 8) {
|
|
|
|
|
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;
|
|
|
|
|
return -1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
c->sense[2] &= 15;
|
|
|
|
|
|
|
|
|
|
if (cgc.uscsi_status == 8) {
|
|
|
|
|
/* >>> fake BUSY sense */;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* >>> valid sense: cgc.uscsi_rqlen - cgc.uscsi_rqresid */;
|
|
|
|
|
|
|
|
|
|
if (c->sense[2] || c->sense[12] || c->sense[13]) {
|
|
|
|
|
if (no_retry || !c->retry) {
|
|
|
|
|
c->error = 1;
|
|
|
|
|
goto ex;
|
|
|
|
|
}
|
|
|
|
|
switch (scsi_error(d, c->sense, 18)) {
|
|
|
|
|
case RETRY:
|
|
|
|
|
if (burn_sg_log_scsi & 3) {
|
|
|
|
|
/* >>> Need own duration time
|
|
|
|
|
measurement. Then remove bit1 */
|
|
|
|
|
scsi_log_err(c, fp, c->sense, 0,
|
|
|
|
|
(c->error != 0) | 2);
|
|
|
|
|
scsi_log_cmd(c,fp,0);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case FAIL:
|
|
|
|
|
c->error = 1;
|
|
|
|
|
goto ex;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
Calming down retries and breaking up endless cycle
|
|
|
|
|
*/
|
|
|
|
|
usleep_time = Libburn_sg_solaris_retry_usleeP +
|
|
|
|
|
i * Libburn_sg_solaris_retry_incR;
|
|
|
|
|
if (time(NULL) + usleep_time / 1000000 - start_time >
|
|
|
|
|
timeout_ms / 1000 + 1) {
|
|
|
|
|
c->error = 1;
|
|
|
|
|
goto ex;
|
|
|
|
|
}
|
|
|
|
|
usleep(usleep_time);
|
|
|
|
|
} else
|
|
|
|
|
break; /* retry-loop */
|
|
|
|
|
} /* end of retry-loop */
|
|
|
|
|
|
|
|
|
|
ex:;
|
|
|
|
|
if (c->error)
|
|
|
|
|
scsi_notify_error(d, c, c->sense, 18, 0);
|
|
|
|
|
|
|
|
|
|
if (burn_sg_log_scsi & 3)
|
|
|
|
|
/* >>> Need own duration time measurement. Then remove bit1 */
|
|
|
|
|
scsi_log_err(c, fp, c->sense, 0, (c->error != 0) | 2);
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* >>> */
|
|
|
|
|
|
|
|
|
|
/** Tries 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)
|
|
|
|
|
{
|
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
|
|
/* Try to guess from path */
|
|
|
|
|
if (strncmp("/dev/rdsk/", path, 10) == 0) {
|
|
|
|
|
ret = decode_btl_solaris(path + 10,
|
|
|
|
|
bus_no, target_no, lun_no, 0);
|
|
|
|
|
if (ret > 0) {
|
|
|
|
|
*host_no = *bus_no;
|
|
|
|
|
*channel_no = 0;
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
*bus_no = *host_no = *channel_no = *target_no = *lun_no = -1;
|
|
|
|
|
|
|
|
|
|
/* >>> Could need a ioctl which gives SCSI numbers */;
|
|
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** Tells wether a text is a persistent address as listed by the enumeration
|
|
|
|
|
functions.
|
|
|
|
|
*/
|
|
|
|
|
int sg_is_enumerable_adr(char* adr)
|
|
|
|
|
{
|
|
|
|
|
burn_drive_enumerator_t idx;
|
|
|
|
|
int initialize = 1, ret;
|
|
|
|
|
char buf[64];
|
|
|
|
|
|
|
|
|
|
while(1) {
|
|
|
|
|
ret = sg_give_next_adr(&idx, buf, sizeof(buf), initialize);
|
|
|
|
|
initialize = 0;
|
|
|
|
|
if (ret <= 0)
|
|
|
|
|
break;
|
|
|
|
|
if (strcmp(adr, buf) == 0) {
|
|
|
|
|
sg_give_next_adr(&idx, buf, sizeof(buf), -1);
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
sg_give_next_adr(&idx, buf, sizeof(buf), -1);
|
|
|
|
|
return (0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Return 1 if the given path leads to a regular file or a device that can be
|
|
|
|
|
seeked, read, and possibly written with 2 kB granularity.
|
|
|
|
|
*/
|
|
|
|
|
int burn_os_is_2k_seekrw(char *path, int flag)
|
|
|
|
|
{
|
|
|
|
|
struct stat stbuf;
|
|
|
|
|
|
|
|
|
|
if (stat(path, &stbuf) == -1)
|
|
|
|
|
return 0;
|
|
|
|
|
if (S_ISREG(stbuf.st_mode))
|
|
|
|
|
return 1;
|
|
|
|
|
if (S_ISBLK(stbuf.st_mode))
|
|
|
|
|
return 1;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** 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 The pointed value gets modified, but only 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 *bytes)
|
|
|
|
|
{
|
|
|
|
|
struct stat stbuf;
|
|
|
|
|
|
|
|
|
|
#ifdef Libburn_os_has_statvfS
|
|
|
|
|
struct statvfs vfsbuf;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
char testpath[4096], *cpt;
|
|
|
|
|
long blocks;
|
|
|
|
|
off_t add_size = 0;
|
|
|
|
|
|
|
|
|
|
testpath[0] = 0;
|
|
|
|
|
blocks = *bytes / 512;
|
|
|
|
|
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)
|
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
|
|
#ifdef __linux
|
|
|
|
|
|
|
|
|
|
/* GNU/Linux specific determination of block device size */
|
|
|
|
|
} else if(S_ISBLK(stbuf.st_mode)) {
|
|
|
|
|
int open_mode = O_RDONLY, fd, ret;
|
|
|
|
|
|
|
|
|
|
fd = open(path, open_mode);
|
|
|
|
|
if (fd == -1)
|
|
|
|
|
return -2;
|
|
|
|
|
ret = ioctl(fd, BLKGETSIZE, &blocks);
|
|
|
|
|
close(fd);
|
|
|
|
|
if (ret == -1)
|
|
|
|
|
return -2;
|
|
|
|
|
*bytes = ((off_t) blocks) * (off_t) 512;
|
|
|
|
|
|
|
|
|
|
#endif /* __linux */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* >>> ioctl to determine capacity of block device
|
|
|
|
|
? DKIOCGEXTVTOC , man dkio ?
|
|
|
|
|
? DKIOCEXTPARTINFO ,
|
|
|
|
|
struct extpart_info.p_length * 512, man dkio ?
|
|
|
|
|
*/;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
} else if(S_ISREG(stbuf.st_mode)) {
|
|
|
|
|
add_size = stbuf.st_blocks * (off_t) 512;
|
|
|
|
|
strcpy(testpath, path);
|
|
|
|
|
} else
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
if (testpath[0]) {
|
|
|
|
|
|
|
|
|
|
#ifdef Libburn_os_has_statvfS
|
|
|
|
|
|
|
|
|
|
if (statvfs(testpath, &vfsbuf) == -1)
|
|
|
|
|
return -2;
|
|
|
|
|
*bytes = add_size + ((off_t) vfsbuf.f_frsize) *
|
|
|
|
|
(off_t) vfsbuf.f_bavail;
|
|
|
|
|
|
|
|
|
|
#else /* Libburn_os_has_statvfS */
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
#endif /* ! Libburn_os_has_stavtfS */
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* 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;
|
|
|
|
|
}
|
|
|
|
|
|
