Hi:
I have a LKM with a /proc file to communicate a user land process with.
this is the read function in my LKM:
_____________________________________
copy_to_user(buf, strBuf, len);
put_user(0, &buf[len]);
...
return len
and this is what i do in the userland:
int fd = open("/proc/my_proc", O_RDONLY);
char *res;
read(fd, res, 20);
close(fd);
_____________________________________
it can read ok, but i get the following messages:
01913: symbol=exit; lookup in file=/home/..././savld /*This is my user
land proc*/
01913: symbol=exit; lookup in file=/usr/lib/libstdc++-libc6.2-2.so.3
...
lookup 0x080048000 0x00000238 -> 0x40092000 0x000e04f0 /1 close
01913: symbol=exit; lookup in file=/home/..././savld /*This is my user
land proc*/
01913: symbol=exit; lookup in file=/usr/lib/libstdc++-libc6.2-2.so.3
...
Segmentation Fault
can somebody tell what's wrong?
--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive: http://mail.nl.linux.org/kernelnewbies/
IRC Channel: irc.openprojects.net / #kernelnewbies
Web Page: http://www.kernelnewbies.org/
