jack@cwi.nl (Jack Jansen) (10/11/90)
I need help from some kernel guru. I'm writing a device driver for Irix 3.3 (on a personal Iris) and I have to allocate an mbuf with a cluster. However, neither MCLALLOC nor MCLGET are available, and there is a comment in mbuf.h that you should use m_vget() in stead. (Unfortunately the device driver guide doesn't handle berkeleyisms at all). Would anyone out there know the arguments to m_vget()? Thanks, -- -- Een volk dat voor tirannen zwicht | Oral: Jack Jansen zal meer dan lijf en goed verliezen | Internet: jack@cwi.nl dan dooft het licht | Uucp: hp4nl!cwi.nl!jack
schuman@sgi.com (Aaron Schuman) (10/13/90)
Jack Jansen asked for the calling sequence for m_vget. I hope this brief code excerpt helps: /* get a variable-sized cluster * If you ask for a full page of CLBYTES bytes, you will get a full * page in a different format. * * In any case, the length field will be set to the requested size. */ struct mbuf * /* 0 or little-mbuf-header */ m_vget(canwait, size, type) int canwait; /* 1=ok to sleep */ int size; /* desired data size in bytes */ int type;