readcd with 2.5 kernels and ide-cd

Hi there!

Is there work going on to get readcd working with 2.5 kernels and ide-cd (without ide-scsi)?

regards
Markus

That's what i get:

[18:41:23]-[Thu May 29]-[~]
[plail@plailis_lfs]strace readcd dev=/dev/dvd f=/dev/null execve("/opt/schily/bin/readcd", ["readcd", "dev=/dev/dvd", "f=/dev/null"], [/* 52 vars */]) = 0

brk(0)                                  = 0x806a000
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3

fstat64(3, {st_mode=S_IFREG|0644, st_size=66034, ...}) = 0 old_mmap(NULL, 66034, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40017000
close(3) = 0
open("/lib/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\10\332"..., 1024) = 1024 fstat64(3, {st_mode=S_IFREG|0755, st_size=5021367, ...}) = 0 old_mmap(NULL, 1215588, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40028000 mprotect(0x40146000, 44132, PROT_NONE) = 0

old_mmap(0x40146000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x11d000) = 0x40146000
old_mmap(0x4014d000, 15460, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4014d000
close(3)                                = 0
munmap(0x40017000, 66034)               = 0
brk(0)                                  = 0x806a000
brk(0x806a0a8)                          = 0x806a0a8
brk(0x806b000)                          = 0x806b000
brk(0x806d000)                          = 0x806d000
open("/dev/dvd", O_RDWR|O_NONBLOCK)     = 3
fcntl64(3, F_GETFL)                     = 0x8802 (flags O_RDWR|O_NONBLOCK|O_LARGEFILE)

fcntl64(3, F_SETFL, O_RDWR|O_LARGEFILE) = 0
ioctl(3, 0x5382, 0xbffff174) = 0
...
....[snip].....
...
gettimeofday({1054226509, 647460}, NULL) = 0
ioctl(3, 0x2285, 0xbfffeecc) = 0
gettimeofday({1054226509, 648266}, NULL) = 0
gettimeofday({1054226509, 648420}, NULL) = 0
ioctl(3, 0x2285, 0xbfffed4c) = 0
gettimeofday({1054226509, 650263}, NULL) = 0
gettimeofday({1054226509, 650414}, NULL) = 0
ioctl(3, 0x2285, 0xbfffeffc) = 0
gettimeofday({1054226509, 651217}, NULL) = 0
gettimeofday({1054226509, 651359}, NULL) = 0
ioctl(3, 0x2285, 0xbfffee9c) = 0
gettimeofday({1054226509, 653212}, NULL) = 0
write(2, "Read speed: 8467 kB/s (CD 48x"..., 44Read speed: 8467 kB/s (CD 48x, DVD 6x).
) = 44
write(2, "Write speed: 0 kB/s (CD 0x"..., 44Write speed: 0 kB/s (CD 0x, DVD 0x).
) = 44
rt_sigaction(SIGINT, {0x8049d48, [INT], SA_RESTART|0x4000000}, {SIG_DFL}, 8) = 0 rt_sigaction(SIGTERM, {0x8049d48, [TERM], SA_RESTART|0x4000000}, {SIG_DFL}, 8) = 0 gettimeofday({1054226509, 660589}, NULL) = 0
ioctl(3, 0x2285, 0xbffff29c) = 0
gettimeofday({1054226509, 661587}, NULL) = 0
gettimeofday({1054226509, 661733}, NULL) = 0
ioctl(3, 0x2285, 0xbffff26c) = 0
gettimeofday({1054226509, 662943}, NULL) = 0
write(2, "Capacity: 2246704 Blocks = 44934"..., 68Capacity: 2246704 Blocks = 4493408 kBytes = 4388 MBytes = 4601 prMB ) = 68
write(2, "Sectorsize: 2048 Bytes\n", 23Sectorsize: 2048 Bytes
) = 23
gettimeofday({1054226509, 663619}, NULL) = 0
ioctl(3, 0x2285, 0xbfffefec) = 0
gettimeofday({1054226509, 664867}, NULL) = 0
write(2, "Copy from SCSI (0,0,0) disk to f"..., 48Copy from SCSI (0,0,0) disk to file '/dev/null' ) = 48
open("/dev/null", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 4
fcntl64(4, F_GETFL) = 0x8001 (flags O_WRONLY|O_LARGEFILE)
fstat64(4, {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 3), ...}) = 0
ioctl(4, SNDCTL_TMR_TIMEBASE, 0xbfffedd8) = -1 ENOTTY (Inappropriate ioctl for device) old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40017000
_llseek(4, 0, [0], SEEK_CUR) = 0
munmap(0x40017000, 4096) = 0
write(2, "end: 2246704\n", 15end: 2246704
) = 15
gettimeofday({1054226509, 666723}, NULL) = 0
) = 242, "addr: 0 cnt: 128\r", 24addr: 0 cnt: 128
gettimeofday({1054226509, 667029}, NULL) = 0
ioctl(3, 0x2285, 0xbfffef9c) = -1 ENOTTY (Inappropriate ioctl for device)
write(3, ".\0\0\0$\0\4\0\5\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 46) = -1 EPERM (Operation not permitted)
ioctl(3, 0x2201, 0xbfff6ee8) = 0
gettimeofday({1054226509, 667663}, NULL) = 0
write(2, "readcd: Operation not permitted."..., 64readcd: Operation not permitted. Cannot send SCSI cmd via ioctl ) = 64
_exit(1) = ?
[18:41:49]-[Thu May 29]-[~]
[plail@plailis_lfs]

Something _very_ fishy is going on there. 0x2285 is the SG_IO ioctl. First call to it completes, second one returns -ENOTTY. Looks very much like some kernel bug, see the SNDCTL_TMR_TIMEBASE ioctl returning -ENOTTY in-between.

I've seen this before (this very bug), but haven't chased it down.

Jens Axboe