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Trying to recognize kernel >= 2.6 and use /dev/sr by default

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This commit is contained in:
Thomas Schmitt 2007-03-15 19:59:54 +00:00
parent fd9e5dc935
commit dba40c756b
2 changed files with 34 additions and 6 deletions
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2
cdrskin/cdrskin_timestamp.h
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@ -1 +1 @@
#define Cdrskin_timestamP "2007.03.15.195428" #define Cdrskin_timestamP "2007.03.15.195534"

38
libburn/sg-linux.c
View File

@ -71,6 +71,7 @@ Hint: You should also look into sg-freebsd-port.c, which is a younger and
#include <sys/poll.h> #include <sys/poll.h>
#include <linux/hdreg.h> #include <linux/hdreg.h>
#include <stdlib.h> #include <stdlib.h>
#include <sys/utsname.h>
#include <scsi/sg.h> #include <scsi/sg.h>
#include <scsi/scsi.h> #include <scsi/scsi.h>
@ -104,15 +105,22 @@ static int linux_sg_enumerate_debug = 0;
in the range of 0 to 31 . The resulting addresses must provide SCSI in the range of 0 to 31 . The resulting addresses must provide SCSI
address parameters Host, Channel, Id, Lun and also Bus. address parameters Host, Channel, Id, Lun and also Bus.
E.g.: "/dev/sg%d" E.g.: "/dev/sg%d"
*/ sr%d is supposed to map only CD-ROM style devices. Additionally a test
/* sr%d is supposed to map only CD-ROM style devices. Additionally a test
with ioctl(CDROM_DRIVE_STATUS) is made to assert that it is such a drive, with ioctl(CDROM_DRIVE_STATUS) is made to assert that it is such a drive,
This initial setting may be overridden in sg_select_device_family() by
settings made via burn_preset_device_open().
*/ */
static char linux_sg_device_family[80] = {"/dev/sg%d"}; static char linux_sg_device_family[80] = {"/dev/sg%d"};
/* Set this to 1 if you want the default linux_sg_device_family chosen
depending on kernel release: sg for <2.6 , sr for >=2.6
*/
static int linux_sg_auto_family = 1;
/* Set this to 1 in order to accept any TYPE_* (see scsi/scsi.h) */ /* Set this to 1 in order to accept any TYPE_* (see scsi/scsi.h) */
/* NEW INFO: Try with 0 first. There is hope via CDROM_DRIVE_STATUS. */ /* But try with 0 first. There is hope via CDROM_DRIVE_STATUS. */
/* !!! DO NOT SET TO 1 UNLESS YOU PROTECTED ALL INDISPENSIBLE DEVICES /* !!! DO NOT SET TO 1 UNLESS YOU PROTECTED ALL INDISPENSIBLE DEVICES
chmod -rw !!! */ chmod -rw !!! */
static int linux_sg_accept_any_type = 0; static int linux_sg_accept_any_type = 0;
@ -183,11 +191,31 @@ int mmc_function_spy(char * text);
/* (Public functions are listed below) */ /* (Public functions are listed below) */
/* ------------------------------------------------------------------------ */ /* ------------------------------------------------------------------------ */
/* This installs (much too often) the device file family if one was /* ts A70314 */
chosen explicitely by burn_preset_device_open() /* This installs the device file family if one was chosen explicitely
by burn_preset_device_open()
*/ */
void sg_select_device_family(void) void sg_select_device_family(void)
{ {
/* >>> ??? do we need a mutex here ? */
/* >>> (It might be concurrent but is supposed to have always
the same effect. Any race condition should be harmless.) */
if (linux_sg_auto_family) {
int use_sr_family = 0;
struct utsname buf;
if (uname(&buf) != -1)
if (strcmp(buf.release, "2.6") >= 0)
use_sr_family = 1;
if (use_sr_family)
strcpy(linux_sg_device_family, "/dev/sr%d");
else
strcpy(linux_sg_device_family, "/dev/sg%d");
linux_sg_auto_family = 0;
}
if (burn_sg_use_family == 1) if (burn_sg_use_family == 1)
strcpy(linux_sg_device_family, "/dev/sr%d"); strcpy(linux_sg_device_family, "/dev/sr%d");
else if (burn_sg_use_family == 2) else if (burn_sg_use_family == 2)