/* ** dynamically loadable chu driver ** ** /src/NTP/REPOSITORY/v3/kernel/chuinit.c,v 1.1.1.1 1994/07/11 07:56:25 kardel Exp ** ** william robertson */ #include #include #include #include #include #include #include extern int findmod(); /* os/str_io.c */ extern struct streamtab chuinfo; struct vdldrv vd = { VDMAGIC_USER, "chu" }; int xxxinit(function_code, vdp, vdi, vds) unsigned int function_code; struct vddrv *vdp; addr_t vdi; struct vdstat *vds; { register int i = 0; register int j; switch (function_code) { case VDLOAD: if (findmod("chu") >= 0) { log(LOG_ERR, "chu stream module already loaded\n"); return (EADDRINUSE); } i = findmod("\0"); if (i == -1 || fmodsw[i].f_name[0] != '\0') return(-1); for (j = 0; vd.Drv_name[j] != '\0'; j++) /* XXX check bounds */ fmodsw[i].f_name[j] = vd.Drv_name[j]; fmodsw[i].f_name[j] = '\0'; fmodsw[i].f_str = &chuinfo; vdp->vdd_vdtab = (struct vdlinkage *) &vd; return(0); case VDUNLOAD: if ((i = findmod(vd.Drv_name)) == -1) return(-1); fmodsw[i].f_name[0] = '\0'; fmodsw[i].f_str = 0; return(0); case VDSTAT: return(0); default: return(EIO); } }