On Wed, Feb 25, 2015 at 2:38 PM, Paul Goyette <[email protected]> wrote: > On Wed, 25 Feb 2015, Paul Goyette wrote: > >> modules that provide sys-calls. Without the module loaded, the syscall >> entry point is known no-op; when the module tries to unload, all of its >> syscalls are checked, and if any of them points to somewhere NOT THE NOOP, >> unload is prevented. > > > Actually, the code checks to see if any those syscalls are currently active > for any processes. > > IIRC, the relevant code is in routine syscall_disestablish() in file > src/sys/kern_syscalls.c
Thank you for your suggestions! I'll check them. BTW, how about using moudle_hold(9) for the refcount? Shouldn't we use it for the purpose? ozaki-r > > > > ------------------------------------------------------------------------- > | Paul Goyette | PGP Key fingerprint: | E-mail addresses: | > | (Retired) | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com | > | Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette at juniper.net | > | Kernel Developer | | pgoyette at netbsd.org | > -------------------------------------------------------------------------
