Hello all, Using 2.4.22, I have been working with some sysctl entries for controlling a network-related module and have found the following two references very useful: http://www.linuxjournal.com/article.php?sid=2365 http://www.geocities.com/chrootstrap/writing_sysctl_drivers_on_linux.html I have created custom entries and can set/get them from userspace. However, I can't figure out how to read the values I've set from inside a module. My understanding is that I don't have access to the standard C library function sysctl. The first article above from Alessandro Rubini is quite old and may be out of date. In it, he says that if working from the kernel I should use the _sysctl function wrapper. This appears to use a struct packed with the args would normally go to the userspace equivalent function but frankly, I'm a little out of my depth attempting to construct this alternative form of the arg list - here are the prototypes for the functions: Userspace: int sysctl (int *name, int nlen, void *oldval, size_t *oldlenp, void *newval, size_t newlen); Args for _sysctl: struct __sysctl_args { int *name; int nlen; void *oldval; size_t *oldlenp; void *newval; size_t newlen; unsigned long __unused[4]; }; In any case, I can't find the definition of the _sysctl function to include. I've looked in the usual places i.e. Rubini's kernel and device driver books from O'Reilly, Google Groups etc. and can't find anything except userspace examples. Can anyone provide any: - solutions - example code - other sources of information? Are there changes in the current kernel I should know about? Many thanks for any help. cam __________________________________ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
