diff options
Diffstat (limited to 'share/examples/lkm/misc/module')
| -rw-r--r-- | share/examples/lkm/misc/module/Makefile | 46 | ||||
| -rw-r--r-- | share/examples/lkm/misc/module/misccall.c | 74 | ||||
| -rw-r--r-- | share/examples/lkm/misc/module/miscmod.c | 184 |
3 files changed, 0 insertions, 304 deletions
diff --git a/share/examples/lkm/misc/module/Makefile b/share/examples/lkm/misc/module/Makefile deleted file mode 100644 index a29cc84..0000000 --- a/share/examples/lkm/misc/module/Makefile +++ /dev/null @@ -1,46 +0,0 @@ -# 05 Jun 93 -# -# Makefile for miscmod -# -# 05 Jun 93 Terry Lambert Original -# -# Copyright (c) 1993 Terrence R. Lambert. -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions -# are met: -# 1. Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# 2. Redistributions in binary form must reproduce the above copyright -# notice, this list of conditions and the following disclaimer in the -# documentation and/or other materials provided with the distribution. -# 3. All advertising materials mentioning features or use of this software -# must display the following acknowledgement: -# This product includes software developed by Terrence R. Lambert. -# 4. The name Terrence R. Lambert may not be used to endorse or promote -# products derived from this software without specific prior written -# permission. -# -# THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``AS IS'' AND ANY -# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -# ARE DISCLAIMED. IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE -# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS -# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) -# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -# SUCH DAMAGE. -# -# $Id$ -# -BINDIR= /tmp -SRCS= misccall.c miscmod.c -KMOD= misc_mod -NOMAN= none - -CLEANFILES+= ${KMOD} - -.include <bsd.kmod.mk> diff --git a/share/examples/lkm/misc/module/misccall.c b/share/examples/lkm/misc/module/misccall.c deleted file mode 100644 index 03856fd..0000000 --- a/share/examples/lkm/misc/module/misccall.c +++ /dev/null @@ -1,74 +0,0 @@ -/* 05 Jun 93*/ -/* - * misccall.c - * - * 05 Jun 93 Terry Lambert Split out of newsyscall.c - * - * Copyright (c) 1993 Terrence R. Lambert. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Terrence R. Lambert. - * 4. The name Terrence R. Lambert may not be used to endorse or promote - * products derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ -#include <sys/param.h> -#include <sys/systm.h> - -/* XXX this should be in a header. */ -extern int misccall __P((struct proc *p, void *uap)); - -/* - * This is the actual code for the system call... it can't be static because - * it is exported to another part of the module... the only place it needs - * to be referenced is the sysent we are interested in. - * - * To write your own system call using this as a template, you could strip - * out this code and use the rest as a prototype module, changing only the - * function names and the number of arguments to the call in the module - * specific "sysent". - * - * You would have to use the "-R" option of "ld" to ensure a linkable file - * if you were to do this, since you would need to combine multiple ".o" - * files into a single ".o" file for use by "modload". - */ -int -misccall( p, uap) -struct proc *p; -void *uap; -{ - /* - * Our new system call simply prints a message; it takes no - * arguments. - */ - - printf( "\nI am a loaded system call.\n"); - printf( "I was loaded using the miscellaneous module loader interface.\n"); - printf( "I don't do anything except call the kernel's printf().\n"); - printf( "I will print this message each time I am called!\n"); - - return( 0); /* success (or error code from errno.h)*/ -} diff --git a/share/examples/lkm/misc/module/miscmod.c b/share/examples/lkm/misc/module/miscmod.c deleted file mode 100644 index 27854fc..0000000 --- a/share/examples/lkm/misc/module/miscmod.c +++ /dev/null @@ -1,184 +0,0 @@ -/* 25 May 93*/ -/* - * miscmod.c - * - * 05 Jun 93 Terry Lambert Split mycall.c out - * 25 May 93 Terry Lambert Original - * - * Copyright (c) 1993 Terrence R. Lambert. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Terrence R. Lambert. - * 4. The name Terrence R. Lambert may not be used to endorse or promote - * products derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/sysproto.h> -#include <sys/exec.h> -#include <sys/sysent.h> -#include <sys/lkm.h> - -/* XXX this should be in a header. */ -extern int misccall __P((struct proc *p, void *uap)); - -/* - * These two entries define our system call and module information. We - * have 0 arguments to our system call. - */ -static struct sysent newent = { - 0, misccall /* # of args, function pointer*/ -}; - -/* - * Miscellaneous modules must have their own save areas... - */ -static struct sysent oldent; /* save area for old callslot entry*/ - -/* - * Number of syscall entries for a.out executables - */ -#define nsysent (aout_sysvec.sv_size) - -MOD_MISC( misc); - - -/* - * This function is called each time the module is loaded or unloaded. - * Since we are a miscellaneous module, we have to provide whatever - * code is necessary to patch ourselves into the area we are being - * loaded to change. - * - * For the system call table, we duplicate the code in the kern_lkm.c - * file for patching into the system call table. We can tell what - * has been allocated, etc. by virtue of the fact that we know the - * criteria used by the system call loader interface. We still - * kick out the copyright to the console here (to give an example). - * - * The stat information is basically common to all modules, so there - * is no real issue involved with stat; we will leave it lkm_nullcmd(), - * since we don't have to do anything about it. - */ -static int -misc_load( lkmtp, cmd) -struct lkm_table *lkmtp; -int cmd; -{ - int i; - struct lkm_misc *args = lkmtp->private.lkm_misc; - int err = 0; /* default = success*/ - - switch( cmd) { - case LKM_E_LOAD: - - /* - * Don't load twice! (lkmexists() is exported by kern_lkm.c) - */ - if( lkmexists( lkmtp)) - return( EEXIST); - - /* - * This is where we would express a slot preference if - * we had one; since we don't, we will simply duplicate - * the "auto" code and forget the other. - */ - - /* - * Search the table looking for a slot... - */ - for( i = 0; i < nsysent; i++) - if( sysent[ i].sy_call == (sy_call_t *)lkmnosys) - break; /* found it!*/ - /* out of allocable slots?*/ - if( i == nsysent) { - err = ENFILE; - break; - } - - /* save old -- we must provide our own data area*/ - bcopy( &sysent[ i], &oldent, sizeof( struct sysent)); - - /* replace with new*/ - bcopy( &newent, &sysent[ i], sizeof( struct sysent)); - - /* done!*/ - args->lkm_offset = i; /* slot in sysent[]*/ - - - /* if we make it to here, print copyright on console*/ - printf( "\nSample Loaded miscellaneous module (system call)\n"); - printf( "Copyright (c) 1993\n"); - printf( "Terrence R. Lambert\n"); - printf( "All rights reserved\n"); - - break; /* Success*/ - - case LKM_E_UNLOAD: - /* current slot...*/ - i = args->lkm_offset; - - /* replace current slot contents with old contents*/ - bcopy( &oldent, &sysent[ i], sizeof( struct sysent)); - - break; /* Success*/ - - default: /* we only understand load/unload*/ - err = EINVAL; - break; - } - - return( err); -} - -/* - * External entry point; should generally match name of .o file. The - * arguments are always the same for all loaded modules. The "load", - * "unload", and "stat" functions in "DISPATCH" will be called under - * their respective circumstances unless their value is "lkm_nullcmd". If - * called, they are called with the same arguments (cmd is included to - * allow the use of a single function, ver is included for version - * matching between modules and the kernel loader for the modules). - * - * Since we expect to link in the kernel and add external symbols to - * the kernel symbol name space in a future version, generally all - * functions used in the implementation of a particular module should - * be static unless they are expected to be seen in other modules or - * to resolve unresolved symbols alread existing in the kernel (the - * second case is not likely to ever occur). - * - * The entry point should return 0 unless it is refusing load (in which - * case it should return an errno from errno.h). - */ -int -misc_mod( lkmtp, cmd, ver) -struct lkm_table *lkmtp; -int cmd; -int ver; -{ - MOD_DISPATCH(misc, lkmtp, cmd, ver, - misc_load, misc_load, lkm_nullcmd); -} |
