libburnia/libburn
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Removed obsolete code and comments

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This commit is contained in:
Thomas Schmitt 2006-09-27 14:40:21 +00:00
parent c70fc7215d
commit 5c45c2aa1b
2 changed files with 13 additions and 107 deletions
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2
cdrskin/cdrskin_timestamp.h
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@ -1 +1 @@
#define Cdrskin_timestamP "2006.09.27.142312"
#define Cdrskin_timestamP "2006.09.27.143843"

118
libburn/sg.c
View File

@ -192,8 +192,8 @@ int sg_open_drive_fd(char *fname, int scan_mode)
int open_mode = O_RDWR, fd;
char msg[81];
/* ts A60813
O_EXCL with block devices is an unpublished feature
/* ts A60813 - A60927
O_EXCL with devices is a non-POSIX feature
of Linux kernels. Possibly introduced 2002.
Mentioned in "The Linux SCSI Generic (sg) HOWTO" */
if(burn_sg_open_o_excl)
@ -314,54 +314,14 @@ void ata_enumerate(void)
int i, fd;
char fname[10];
#ifdef No_sg_open_drive_fD
/* ts A60813 */
int open_mode = O_RDWR;
/* ts A60813
O_EXCL with block devices is an unpublished feature
of Linux kernels. Possibly introduced 2002.
Mentioned in "The Linux SCSI Generic (sg) HOWTO" */
if(burn_sg_open_o_excl)
open_mode |= O_EXCL;
/* ts A60813
O_NONBLOCK was already hardcoded in ata_ but not in sg_.
There must be some reason for this. So O_NONBLOCK is
default mode for both now. Disable on own risk. */
if(burn_sg_open_o_nonblock)
open_mode |= O_NONBLOCK;
#endif /* No_sg_open_drive_fD */
for (i = 0; i < 26; i++) {
sprintf(fname, "/dev/hd%c", 'a' + i);
/* open O_RDWR so we don't think read only drives are
in some way useful
*/
/* ts A51221 */
if (burn_drive_is_banned(fname))
continue;
#ifdef No_sg_open_drive_fD
fd = open(fname, open_mode);
if (fd == -1) {
/* <<< debugging
fprintf(stderr,
"\nlibburn: experimental: fname= %s , errno= %d\n",
fname,errno);
*/
if (errno == EBUSY)
sg_handle_busy_device(fname, errno);
continue;
}
#else
continue;
fd = sg_open_drive_fd(fname, 1);
if (fd == -1)
continue;
#endif /* ! No_sg_open_drive_fD */
continue;
/* found a drive */
ioctl(fd, HDIO_GET_IDENTITY, &tm);
@ -369,7 +329,7 @@ void ata_enumerate(void)
/* not atapi */
if (!(tm.config & 0x8000) || (tm.config & 0x4000)) {
sg_close_drive_fd(fname, -1, &fd, 0);
continue;
continue;
}
/* if SG_IO fails on an atapi device, we should stop trying to
@ -379,7 +339,7 @@ void ata_enumerate(void)
return;
}
if (sg_close_drive_fd(fname, -1, &fd, 1) <= 0)
continue;
continue;
enumerate_common(fname, -1, -1, -1, -1);
}
}
@ -390,68 +350,15 @@ void sg_enumerate(void)
int i, fd, sibling_fds[LIBBURN_SG_MAX_SIBLINGS], sibling_count= 0, ret;
char fname[10];
#ifdef No_sg_open_drive_fD
/* ts A60813 */
int open_mode = O_RDWR;
/* ts A60813
O_EXCL with block devices is an unpublished feature
of Linux kernels. Possibly introduced 2002.
Mentioned in "The Linux SCSI Generic (sg) HOWTO" */
if(burn_sg_open_o_excl)
open_mode |= O_EXCL;
/* ts A60813
O_NONBLOCK was not hardcoded in sg_ but was in ata_.
I myself test mainly sg_ and it seems to be ok with
O_NONBLOCK. So it should stay default mode. */
if(burn_sg_open_o_nonblock)
open_mode |= O_NONBLOCK;
/* <<< debugging
fprintf(stderr,
"\nlibburn: experimental: o_excl= %d , o_nonblock= %d, abort_on_busy= %d\n",
burn_sg_open_o_excl,burn_sg_open_o_nonblock,burn_sg_open_abort_busy);
fprintf(stderr,
"libburn: experimental: O_EXCL= %d , O_NONBLOCK= %d\n",
!!(open_mode&O_EXCL),!!(open_mode&O_NONBLOCK));
*/
#endif /* No_sg_open_drive_fD */
for (i = 0; i < 32; i++) {
sprintf(fname, "/dev/sg%d", i);
/* open RDWR so we don't accidentally think read only drives
are in some way useful
*/
/* ts A51221 */
if (burn_drive_is_banned(fname))
continue;
#ifdef No_sg_open_drive_fD
fd = open(fname, open_mode);
if (fd == -1) {
/* <<< debugging
fprintf(stderr,
"\n cdrskin: experimental: fname= %s , errno= %d\n",
fname,errno);
*/
if (errno == EBUSY)
sg_handle_busy_device(fname, errno);
continue;
}
#else
/* ts A60927 */
fd = sg_open_drive_fd(fname, 1);
if (fd == -1)
continue;
#endif /* ! No_sg_open_drive_fD */
continue;
/* found a drive */
ioctl(fd, SG_GET_SCSI_ID, &sid);
@ -575,12 +482,11 @@ int sg_grab(struct burn_drive *d)
mmc_function_spy("sg_grab");
/* ts A60813
O_EXCL with block devices is an unpublished feature
/* ts A60813 - A60927
O_EXCL with devices is a non-POSIX feature
of Linux kernels. Possibly introduced 2002.
It can only be used if libburn stops opening several
file descriptor on the same block device.
See comment below */
Mentioned in "The Linux SCSI Generic (sg) HOWTO".
*/
if(burn_sg_open_o_excl)
open_mode |= O_EXCL;