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Diffstat (limited to 'share/examples/kld/misc/module/miscmod.c')
| -rw-r--r-- | share/examples/kld/misc/module/miscmod.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/share/examples/kld/misc/module/miscmod.c b/share/examples/kld/misc/module/miscmod.c deleted file mode 100644 index 07be90f..0000000 --- a/share/examples/kld/misc/module/miscmod.c +++ /dev/null @@ -1,197 +0,0 @@ -/* 08 Nov 1998*/ -/* - * miscmod.c - * - * 08 Nov 1998 Rajesh Vaidheeswarran - adapted from the lkm miscmod.c - * - * Copyright (c) 1998 Rajesh Vaidheeswarran - * 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 Rajesh Vaidheeswarran. - * 4. The name Rajesh Vaidheeswarran may not be used to endorse or promote - * products derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY RAJESH VAIDHEESWARRAN ``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 RAJESH VAIDHEESWARRAN 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. - * - * - * 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/kernel.h> -#include <sys/module.h> -#include <sys/conf.h> - -#include "misccall.h" - -/* - * 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) - -/* - * If you have a data structure to pass ... - */ - -typedef struct misc_data { - char name[20]; - struct sysent * nent; - struct sysent * oent; - int offset; -} misc_data_t; - -static misc_data_t misc_arg = { - "misccall", - &newent, - &oldent, - -1 -}; - -static int misc_load(module_t, modeventtype_t, void *); - -static moduledata_t misc_mod = { - "misc_mod", - misc_load, - (void *)&misc_arg /* This is our real data */ -}; - -/* - * This function is called each time the module is loaded or unloaded. - * - * 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). - */ -static int -misc_load(mod, cmd, arg) - module_t mod; - modeventtype_t cmd; - void * arg; -{ - int i, err = 0; - - misc_data_t * args = (misc_data_t *)arg; - - switch (cmd) { - case MOD_LOAD: - - /* - * Search the table looking for a slot... - */ - for(i = 1; i < nsysent; i++) - if(sysent[i].sy_call == (sy_call_t *)nosys) - 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], args->oent, sizeof(struct sysent)); - - /* replace with new*/ - bcopy(args->nent, &sysent[i], sizeof(struct sysent)); - - /* done!*/ - args->offset = i; /* slot in sysent[]*/ - - - /* if we make it to here, print copyright on console*/ - printf("\nSample Loaded kld module (system call)\n"); - printf("Copyright (c) 1998\n"); - printf("Rajesh Vaidheeswarran\n"); - printf("All rights reserved\n"); - printf("System call %s loaded into slot %d\n", args->name, - args->offset); - break; /* Success*/ - - case MOD_UNLOAD: - /* current slot...*/ - i = args->offset; - - /* replace current slot contents with old contents*/ - bcopy(args->oent, &sysent[ i], sizeof( struct sysent)); - - printf("Unloaded kld module (system call)\n"); - - break; /* Success*/ - - default: /* we only understand load/unload*/ - err = EINVAL; - break; - } - - return(err); -} - -/* Now declare the module to the system */ - -DECLARE_MODULE(misc, misc_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); |
