[syslinux] isohybrid: seek error - 6: Invalid argument

[Gerardo Exequiel Pozzi]

  Hello

Recently while playing with bigger iso images (>2G) looks like isohybrid 
from syslinux-4.02 fails. Sometimes tunning heads/sectors (-h/-s) works, 
because no padding is needed depending of size of the image.

Some debug info provided, if more info is needed please just ask.

# isohybrid -v pandereta-2010.09.13-i686.iso
catalogue offset: 326
ve[0]: 1, cs: 1
ve[1]: 0, cs: 1
ve[2]: 25927, cs: 25928
ve[3]: 24946, cs: 50874
ve[4]: 25714, cs: 76588
ve[5]: 8303, cs: 84891
ve[6]: 30789, cs: 115680
ve[7]: 29029, cs: 144709
ve[8]: 26997, cs: 171706
ve[9]: 27749, cs: 199455
ve[10]: 20512, cs: 219967
ve[11]: 31343, cs: 251310
ve[12]: 27002, cs: 278312
ve[13]: 32, cs: 278344
ve[14]: 5731, cs: 284075
ve[15]: 43605, cs: 327680
de_boot: 136
de_media: 0
de_seg: 0
de_sys: 0
de_mbz1: 0
de_count: 4
de_lba: 327
de_mbz2: 0
imgsize: 2265417728, padding: 555008
isohybrid: Warning: more than 1024 cylinders: 2161
isohybrid: Not all BIOSes will be able to boot this device
id: 281396446
sizeof(MBR): 512 bytes
...
0432  1c 05 00 00 00 00 00 00  de c4 c5 10 00 00 80 00  |................|
0448  01 00 17 3f e0 ff 00 00  00 00 00 88 43 00 00 00  |...?........C...|
...
isohybrid: pandereta-2010.09.13-i686.iso: seek error - 6: Invalid argument


# strace -e trace=desc isohybrid pandereta-2010.09.13-i686.iso
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=22221, ...}) = 0
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\320m\1\0004\0\0\0"..., 
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1347988, ...}) = 0
close(3)                                = 0
open("pandereta-2010.09.13-i686.iso", O_RDWR|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2265417728, ...}) = 0
_llseek(3, 32768, [32768], SEEK_SET)    = 0
read(3, "\1CD001\1\0LINUX                   "..., 2048) = 2048
read(3, "\0CD001\1EL TORITO SPECIFICATION\0\0"..., 4096) = 4096
_llseek(3, 667648, [667648], SEEK_SET)  = 0
read(3, "\1\0\0\0Gerardo Exequiel Pozzi \0c\26U\252"..., 4096) = 4096
_llseek(3, 671744, [671744], SEEK_SET)  = 0
write(2, "isohybrid: ", 11isohybrid: )             = 11
write(2, "Warning: more than 1024 cylinder"..., 39Warning: more than 
1024 cylinders: 2161) = 39
write(2, "\n", 1
)                       = 1
write(2, "isohybrid: ", 11isohybrid: )             = 11
write(2, "Not all BIOSes will be able to b"..., 47Not all BIOSes will be 
able to boot this device) = 47
write(2, "\n", 1
)                       = 1
_llseek(3, 0, [0], SEEK_SET)            = 0
read(3, 
"\3721\355\216\325\274\0|\373\374f1\333f1\311fSfQ\6W\216\335\216\305R\276\0|\277\0"..., 
4096) = 4096
_llseek(3, 4096, [4096], SEEK_SET)      = 0
_llseek(3, -4096, [0], SEEK_CUR)        = 0
write(3, 
"\3721\355\216\325\274\0|\373\374f1\333f1\311fSfQ\6W\216\335\216\305R\276\0|\277\0"..., 
512) = 512
_llseek(3, 18446744071680000000, 0xbfff6b50, SEEK_SET) = -1 EINVAL 
(Invalid argument)
write(2, "isohybrid: ", 11isohybrid: )             = 11
write(2, "pandereta-2010.09.13-i686.iso: s"..., 
45pandereta-2010.09.13-i686.iso: seek error - 6) = 45
write(2, ": ", 2: )                       = 2
write(2, "Invalid argument\n", 17Invalid argument
)      = 17

-- 
Gerardo Exequiel Pozzi
\cos^2\alpha + \sin^2\alpha = 1