Hello Justin, Thursday, June 07, 2001, 3:35:27 AM, you wrote: JS> Eugene Kuznetsov wrote: >> Tested it with 0.8.16, still does not work :(( ... >> First, as I already mentioned, it does not compile with -Werror: >> >> gcc -pthread -Wall -O2 -g -Werror -o QTrec NVrec.c -ldl -lpng -lglib RTjpeg.o quicktime/libquicktime.a >> cc1: warnings being treated as errors >> In file included from NVrec.c:31: >> /usr/include/linux/videodev.h:942: warning: `struct file' declared inside parameter list >> /usr/include/linux/videodev.h:942: warning: its scope is only this definition or declaration, which is probably not what you want. >> /usr/include/linux/videodev.h:942: warning: `struct inode' declared inside parameter list >> make: *** [QTrec] Error 1 >> >> This may be caused by me doing something wrong when patching the >> kernel. JS> That is strange. I am pretty sure 'struct file' and 'struct inode' JS> should never be visible to userland compiles. Gerd, could you please JS> have a look at this (please let me know if this is actually a fault on JS> my side)? Ok, then it's my fault. >> Next question is, why mmap() is failing? I tried to add a couple >> of printk()'s to find out what happens, and this looks quite weird >> for me. One of the first sanity checks in bttv_mmap() ( sources of >> 0.8.16 ) fails. It is: >> >> if (!(vma->vm_flags & VM_SHARED)) >> return -EINVAL; >> >> But, if I correctly understood what happens during the mmap() syscall >> ( /usr/src/linux/mm/mmap.c ), VM_SHARED flag is not set for mapping >> areas read-only! I tried to change protection in parameters to >> mmap(), but only to receive 'permission denied' instead of 'invalid >> argument', even as root. JS> Umm.. Try the attached patch - this may work... As I already mentioned, applying this change does not help, because then I receive 'permission denied'. -- Best regards, Eugene mailto:divx@xxxxxxx or sparky@xxxxxxxxxxxxxxx [Team GADGET] [Team Two Divided By Zero] NetZero Platinum No Banner Ads and Unlimited Access Sign Up Today - Only $9.95 per month! http://www.netzero.net
