d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
c93671f44e
freebsd-skq/sys/kern/kern_module.c

340 lines
7.7 KiB
C
Raw Normal View History

This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
/*-
* Copyright (c) 1997 Doug Rabson
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
*
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
Implement a new generic mechanism for attaching handler functions to events, in order to pave the way for removing a number of the ad-hoc implementations currently in use. Retire the at_shutdown family of functions and replace them with new event handler lists. Rework kern_shutdown.c to take greater advantage of the use of event handlers. Reviewed by: green
1999-08-21 06:24:40 +00:00
#include <sys/eventhandler.h>
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
#include <sys/malloc.h>
#include <sys/sysproto.h>
#include <sys/sysent.h>
#include <sys/module.h>
#include <sys/linker.h>
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
#include <sys/proc.h>
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
First round implementation of a fine grain enhanced module to module version dependency system. This isn't quite finished, but it is at a useful stage to do a functional checkpoint. Highlights: - version and dependency metadata is gathered via linker sets, so things are handled the same for static kernels and code built to live in a kld. - The dependencies are at module level (versus at file level). - Dependencies determine kld symbol search order - this means that you cannot link against symbols in another file unless you depend on it. This is so that you cannot accidently unload the target out from underneath the ones referencing it. - It is flexible enough that we can put tags in #include files and macros so that we can get decent hooks for enforcing recompiles on incompatable ABI changes. eg: if we change struct proc, we could force a recompile for all kld's that reference the proc struct. - Tangled dependency references at boot time are sorted. Files are relocated once all their dependencies are already relocated. Caveats: - Loader support is incomplete, but has been worked on seperately. - Actual enforcement of the version number tags is not active yet - just the module dependencies are live. The actual structure of versioning hasn't been agreed on yet. (eg: major.minor, or whatever) - There is some backwards compatability for old modules without metadata but I'm not sure how good it is. This is based on work originally done by Boris Popov (bp@freebsd.org), but I'm not sure he'd recognize much of it now. Don't blame him. :-) Also, ideas have been borrowed from Mike Smith.
2000-04-29 13:19:31 +00:00
MALLOC_DEFINE(M_MODULE, "module", "module data structures");
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
Back out the previous change to the queue(3) interface. It was not discussed and should probably not happen. Requested by: msmith and others
2000-05-26 02:09:24 +00:00
typedef TAILQ_HEAD(, module) modulelist_t;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
struct module {
Back out the previous change to the queue(3) interface. It was not discussed and should probably not happen. Requested by: msmith and others
2000-05-26 02:09:24 +00:00
TAILQ_ENTRY(module) link; /* chain together all modules */
TAILQ_ENTRY(module) flink; /* all modules in a file */
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
struct linker_file* file; /* file which contains this module */
int refs; /* reference count */
int id; /* unique id number */
char *name; /* module name */
modeventhand_t handler; /* event handler */
void *arg; /* argument for handler */
Implement a mechanism for a module to report a small amount of module specific data back to the user via kldstat(2). Use that mechanism in the syscall handler to report the syscall number used.
1999-01-09 14:59:50 +00:00
modspecific_t data; /* module specific data */
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
};
#define MOD_EVENT(mod, type) (mod)->handler((mod), (type), (mod)->arg)
static modulelist_t modules;
static int nextid = 1;
Implement a new generic mechanism for attaching handler functions to events, in order to pave the way for removing a number of the ad-hoc implementations currently in use. Retire the at_shutdown family of functions and replace them with new event handler lists. Rework kern_shutdown.c to take greater advantage of the use of event handlers. Reviewed by: green
1999-08-21 06:24:40 +00:00
static void module_shutdown(void*, int);
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
A hack basically.. We have a bunch of code that used to call devsw_module_handler() indirectly and not use the chain arguments. To eliminate this indirection via that function (which does nothing now) without duplicating a modevent handler into all the routines that don't presently have one, supply a NOP (do nothing, return OK) routine which is functionally equivalent to what's there now. This is a hack and is still wrong, because there doesn't appear to be anything to reclaim resources on an unload of a module with one of these in it. I'm not sure whether to make the NOP handler refuse a MOD_UNLOAD event or what.
1999-11-08 06:53:30 +00:00
static int
modevent_nop(module_t mod, int what, void* arg)
{
return 0;
}
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
static void
module_init(void* arg)
{
TAILQ_INIT(&modules);
Implement a new generic mechanism for attaching handler functions to events, in order to pave the way for removing a number of the ad-hoc implementations currently in use. Retire the at_shutdown family of functions and replace them with new event handler lists. Rework kern_shutdown.c to take greater advantage of the use of event handlers. Reviewed by: green
1999-08-21 06:24:40 +00:00
EVENTHANDLER_REGISTER(shutdown_post_sync, module_shutdown, NULL,
SHUTDOWN_PRI_DEFAULT);
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
}
*gulp*. Jordan specifically OK'ed this.. This is the bulk of the support for doing kld modules. Two linker_sets were replaced by SYSINIT()'s. VFS's and exec handlers are self registered. kld is now a superset of lkm. I have converted most of them, they will follow as a seperate commit as samples. This all still works as a static a.out kernel using LKM's.
1998-10-16 03:55:01 +00:00
SYSINIT(module, SI_SUB_KLD, SI_ORDER_FIRST, module_init, 0);
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
static void
Implement a new generic mechanism for attaching handler functions to events, in order to pave the way for removing a number of the ad-hoc implementations currently in use. Retire the at_shutdown family of functions and replace them with new event handler lists. Rework kern_shutdown.c to take greater advantage of the use of event handlers. Reviewed by: green
1999-08-21 06:24:40 +00:00
module_shutdown(void* arg1, int arg2)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
{
module_t mod;
for (mod = TAILQ_FIRST(&modules); mod; mod = TAILQ_NEXT(mod, link))
MOD_EVENT(mod, MOD_SHUTDOWN);
}
void
More -Wall / -Wcast-qual cleanup. Also, EXEC_SET can't use C_DECLARE_MODULE due to the linker_file_sysinit() function making modifications to the data.
1999-01-29 08:36:45 +00:00
module_register_init(const void *arg)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
{
More -Wall / -Wcast-qual cleanup. Also, EXEC_SET can't use C_DECLARE_MODULE due to the linker_file_sysinit() function making modifications to the data.
1999-01-29 08:36:45 +00:00
const moduledata_t* data = (const moduledata_t*) arg;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
int error;
First stages of a module dependency cleanup. This part fixes a particularly annoying hack, namely having the linker bash the moduledata to set the container pointer, preventing it being const. In the process, a stack of warnings were fixed and will probably allow a revisit of the const C_SYSINIT() changes. This explicitly registers modules in files or preload areas with the module system first, and let them initialize via SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order. The kludge of finding the containing file is no longer needed since the registration of modules onto the modules list is done in the context of initializing the linker file.
1999-05-08 13:01:59 +00:00
module_t mod;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
First stages of a module dependency cleanup. This part fixes a particularly annoying hack, namely having the linker bash the moduledata to set the container pointer, preventing it being const. In the process, a stack of warnings were fixed and will probably allow a revisit of the const C_SYSINIT() changes. This explicitly registers modules in files or preload areas with the module system first, and let them initialize via SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order. The kludge of finding the containing file is no longer needed since the registration of modules onto the modules list is done in the context of initializing the linker file.
1999-05-08 13:01:59 +00:00
mod = module_lookupbyname(data->name);
First round implementation of a fine grain enhanced module to module version dependency system. This isn't quite finished, but it is at a useful stage to do a functional checkpoint. Highlights: - version and dependency metadata is gathered via linker sets, so things are handled the same for static kernels and code built to live in a kld. - The dependencies are at module level (versus at file level). - Dependencies determine kld symbol search order - this means that you cannot link against symbols in another file unless you depend on it. This is so that you cannot accidently unload the target out from underneath the ones referencing it. - It is flexible enough that we can put tags in #include files and macros so that we can get decent hooks for enforcing recompiles on incompatable ABI changes. eg: if we change struct proc, we could force a recompile for all kld's that reference the proc struct. - Tangled dependency references at boot time are sorted. Files are relocated once all their dependencies are already relocated. Caveats: - Loader support is incomplete, but has been worked on seperately. - Actual enforcement of the version number tags is not active yet - just the module dependencies are live. The actual structure of versioning hasn't been agreed on yet. (eg: major.minor, or whatever) - There is some backwards compatability for old modules without metadata but I'm not sure how good it is. This is based on work originally done by Boris Popov (bp@freebsd.org), but I'm not sure he'd recognize much of it now. Don't blame him. :-) Also, ideas have been borrowed from Mike Smith.
2000-04-29 13:19:31 +00:00
if (mod == NULL)
First stages of a module dependency cleanup. This part fixes a particularly annoying hack, namely having the linker bash the moduledata to set the container pointer, preventing it being const. In the process, a stack of warnings were fixed and will probably allow a revisit of the const C_SYSINIT() changes. This explicitly registers modules in files or preload areas with the module system first, and let them initialize via SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order. The kludge of finding the containing file is no longer needed since the registration of modules onto the modules list is done in the context of initializing the linker file.
1999-05-08 13:01:59 +00:00
panic("module_register_init: module named %s not found\n", data->name);
error = MOD_EVENT(mod, MOD_LOAD);
if (error) {
MOD_EVENT(mod, MOD_UNLOAD);
module_release(mod);
printf("module_register_init: MOD_LOAD (%s, %lx, %p) error %d\n",
Changed to the C9x draft spelling of the (unsigned) integral type suitable for holding object pointers (ptrint_t -> uintptr_t). Added corresponding signed type (intptr_t). Changed/added corresponding non-C9x types for function pointers to match. Don't use nonstandard types to implement these types, and don't comment on them in <machine/types.h>.
1998-07-14 05:09:48 +00:00
data->name, (u_long)(uintfptr_t)data->evhand, data->priv, error);
First stages of a module dependency cleanup. This part fixes a particularly annoying hack, namely having the linker bash the moduledata to set the container pointer, preventing it being const. In the process, a stack of warnings were fixed and will probably allow a revisit of the const C_SYSINIT() changes. This explicitly registers modules in files or preload areas with the module system first, and let them initialize via SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order. The kludge of finding the containing file is no longer needed since the registration of modules onto the modules list is done in the context of initializing the linker file.
1999-05-08 13:01:59 +00:00
}
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
}
int
First stages of a module dependency cleanup. This part fixes a particularly annoying hack, namely having the linker bash the moduledata to set the container pointer, preventing it being const. In the process, a stack of warnings were fixed and will probably allow a revisit of the const C_SYSINIT() changes. This explicitly registers modules in files or preload areas with the module system first, and let them initialize via SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order. The kludge of finding the containing file is no longer needed since the registration of modules onto the modules list is done in the context of initializing the linker file.
1999-05-08 13:01:59 +00:00
module_register(const moduledata_t *data, linker_file_t container)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
{
size_t namelen;
module_t newmod;
First stages of a module dependency cleanup. This part fixes a particularly annoying hack, namely having the linker bash the moduledata to set the container pointer, preventing it being const. In the process, a stack of warnings were fixed and will probably allow a revisit of the const C_SYSINIT() changes. This explicitly registers modules in files or preload areas with the module system first, and let them initialize via SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order. The kludge of finding the containing file is no longer needed since the registration of modules onto the modules list is done in the context of initializing the linker file.
1999-05-08 13:01:59 +00:00
newmod = module_lookupbyname(data->name);
if (newmod != NULL) {
printf("module_register: module %s already exists!\n", data->name);
return EEXIST;
}
namelen = strlen(data->name) + 1;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
newmod = (module_t) malloc(sizeof(struct module) + namelen,
M_MODULE, M_WAITOK);
if (newmod == 0)
return ENOMEM;
newmod->refs = 1;
newmod->id = nextid++;
newmod->name = (char *) (newmod + 1);
First stages of a module dependency cleanup. This part fixes a particularly annoying hack, namely having the linker bash the moduledata to set the container pointer, preventing it being const. In the process, a stack of warnings were fixed and will probably allow a revisit of the const C_SYSINIT() changes. This explicitly registers modules in files or preload areas with the module system first, and let them initialize via SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order. The kludge of finding the containing file is no longer needed since the registration of modules onto the modules list is done in the context of initializing the linker file.
1999-05-08 13:01:59 +00:00
strcpy(newmod->name, data->name);
A hack basically.. We have a bunch of code that used to call devsw_module_handler() indirectly and not use the chain arguments. To eliminate this indirection via that function (which does nothing now) without duplicating a modevent handler into all the routines that don't presently have one, supply a NOP (do nothing, return OK) routine which is functionally equivalent to what's there now. This is a hack and is still wrong, because there doesn't appear to be anything to reclaim resources on an unload of a module with one of these in it. I'm not sure whether to make the NOP handler refuse a MOD_UNLOAD event or what.
1999-11-08 06:53:30 +00:00
newmod->handler = data->evhand ? data->evhand : modevent_nop;
First stages of a module dependency cleanup. This part fixes a particularly annoying hack, namely having the linker bash the moduledata to set the container pointer, preventing it being const. In the process, a stack of warnings were fixed and will probably allow a revisit of the const C_SYSINIT() changes. This explicitly registers modules in files or preload areas with the module system first, and let them initialize via SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order. The kludge of finding the containing file is no longer needed since the registration of modules onto the modules list is done in the context of initializing the linker file.
1999-05-08 13:01:59 +00:00
newmod->arg = data->priv;
Implement a mechanism for a module to report a small amount of module specific data back to the user via kldstat(2). Use that mechanism in the syscall handler to report the syscall number used.
1999-01-09 14:59:50 +00:00
bzero(&newmod->data, sizeof(newmod->data));
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
TAILQ_INSERT_TAIL(&modules, newmod, link);
First stages of a module dependency cleanup. This part fixes a particularly annoying hack, namely having the linker bash the moduledata to set the container pointer, preventing it being const. In the process, a stack of warnings were fixed and will probably allow a revisit of the const C_SYSINIT() changes. This explicitly registers modules in files or preload areas with the module system first, and let them initialize via SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order. The kludge of finding the containing file is no longer needed since the registration of modules onto the modules list is done in the context of initializing the linker file.
1999-05-08 13:01:59 +00:00
if (container)
Keep track of the containing file for modules. This is a bit of a hack, but I can't think of another (relatively) easy way of getting the info since the boot-time initialization is not done immediately after "loading". XXX module_register() gained an extra arg. This might break the alpha compile, if so, just add a zero to get the old behavior.
1998-10-10 00:03:07 +00:00
TAILQ_INSERT_TAIL(&container->modules, newmod, flink);
Oops, set module->file.. PR: 1179 Submitted-by: lha@stacken.kth.se
1999-05-20 00:00:58 +00:00
newmod->file = container;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
return 0;
}
void
module_reference(module_t mod)
{
MOD_DPF(REFS, ("module_reference: before, refs=%d\n", mod->refs));
mod->refs++;
}
void
module_release(module_t mod)
{
if (mod->refs <= 0)
panic("module_release: bad reference count");
MOD_DPF(REFS, ("module_release: before, refs=%d\n", mod->refs));
mod->refs--;
if (mod->refs == 0) {
TAILQ_REMOVE(&modules, mod, link);
if (mod->file) {
TAILQ_REMOVE(&mod->file->modules, mod, flink);
}
free(mod, M_MODULE);
}
}
module_t
module_lookupbyname(const char* name)
{
module_t mod;
for (mod = TAILQ_FIRST(&modules); mod; mod = TAILQ_NEXT(mod, link)) {
if (!strcmp(mod->name, name))
return mod;
}
return 0;
}
module_t
module_lookupbyid(int modid)
{
module_t mod;
for (mod = TAILQ_FIRST(&modules); mod; mod = TAILQ_NEXT(mod, link)) {
if (mod->id == modid)
return mod;
}
return 0;
}
int
module_unload(module_t mod)
{
return MOD_EVENT(mod, MOD_UNLOAD);
}
int
module_getid(module_t mod)
{
return mod->id;
}
module_t
module_getfnext(module_t mod)
{
return TAILQ_NEXT(mod, flink);
}
Implement a mechanism for a module to report a small amount of module specific data back to the user via kldstat(2). Use that mechanism in the syscall handler to report the syscall number used.
1999-01-09 14:59:50 +00:00
void
module_setspecific(module_t mod, modspecific_t *datap)
{
mod->data = *datap;
}
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
/*
* Syscalls.
*/
int
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
modnext(struct proc* p, struct modnext_args* uap)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
{
module_t mod;
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
p->p_retval[0] = -1;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
if (SCARG(uap, modid) == 0) {
mod = TAILQ_FIRST(&modules);
if (mod) {
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
p->p_retval[0] = mod->id;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
return 0;
} else
return ENOENT;
}
mod = module_lookupbyid(SCARG(uap, modid));
if (!mod)
return ENOENT;
if (TAILQ_NEXT(mod, link))
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
p->p_retval[0] = TAILQ_NEXT(mod, link)->id;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
else
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
p->p_retval[0] = 0;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
return 0;
}
int
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
modfnext(struct proc* p, struct modfnext_args* uap)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
{
module_t mod;
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
p->p_retval[0] = -1;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
mod = module_lookupbyid(SCARG(uap, modid));
if (!mod)
return ENOENT;
if (TAILQ_NEXT(mod, flink))
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
p->p_retval[0] = TAILQ_NEXT(mod, flink)->id;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
else
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
p->p_retval[0] = 0;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
return 0;
}
Implement a mechanism for a module to report a small amount of module specific data back to the user via kldstat(2). Use that mechanism in the syscall handler to report the syscall number used.
1999-01-09 14:59:50 +00:00
struct module_stat_v1 {
int version; /* set to sizeof(struct module_stat) */
char name[MAXMODNAME];
int refs;
int id;
};
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
int
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
modstat(struct proc* p, struct modstat_args* uap)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
{
module_t mod;
int error = 0;
int namelen;
int version;
struct module_stat* stat;
mod = module_lookupbyid(SCARG(uap, modid));
if (!mod)
return ENOENT;
stat = SCARG(uap, stat);
/*
* Check the version of the user's structure.
*/
Fix warnings in preparation for adding -Wall -Wcast-qual to the kernel compile
1999-01-27 21:50:00 +00:00
if ((error = copyin(&stat->version, &version, sizeof(version))) != 0)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
goto out;
Implement a mechanism for a module to report a small amount of module specific data back to the user via kldstat(2). Use that mechanism in the syscall handler to report the syscall number used.
1999-01-09 14:59:50 +00:00
if (version != sizeof(struct module_stat_v1)
&& version != sizeof(struct module_stat)) {
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
error = EINVAL;
goto out;
}
namelen = strlen(mod->name) + 1;
if (namelen > MAXMODNAME)
namelen = MAXMODNAME;
Fix warnings in preparation for adding -Wall -Wcast-qual to the kernel compile
1999-01-27 21:50:00 +00:00
if ((error = copyout(mod->name, &stat->name[0], namelen)) != 0)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
goto out;
Fix warnings in preparation for adding -Wall -Wcast-qual to the kernel compile
1999-01-27 21:50:00 +00:00
if ((error = copyout(&mod->refs, &stat->refs, sizeof(int))) != 0)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
goto out;
Fix warnings in preparation for adding -Wall -Wcast-qual to the kernel compile
1999-01-27 21:50:00 +00:00
if ((error = copyout(&mod->id, &stat->id, sizeof(int))) != 0)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
goto out;
Implement a mechanism for a module to report a small amount of module specific data back to the user via kldstat(2). Use that mechanism in the syscall handler to report the syscall number used.
1999-01-09 14:59:50 +00:00
/*
* >v1 stat includes module data.
*/
if (version == sizeof(struct module_stat)) {
Fix warnings in preparation for adding -Wall -Wcast-qual to the kernel compile
1999-01-27 21:50:00 +00:00
if ((error = copyout(&mod->data, &stat->data, sizeof(mod->data))) != 0)
Implement a mechanism for a module to report a small amount of module specific data back to the user via kldstat(2). Use that mechanism in the syscall handler to report the syscall number used.
1999-01-09 14:59:50 +00:00
goto out;
Remove a diagnostic message left in by mistake.
1999-01-09 16:50:04 +00:00
}
Implement a mechanism for a module to report a small amount of module specific data back to the user via kldstat(2). Use that mechanism in the syscall handler to report the syscall number used.
1999-01-09 14:59:50 +00:00
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
p->p_retval[0] = 0;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
out:
return error;
}
int
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
modfind(struct proc* p, struct modfind_args* uap)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
{
int error = 0;
char name[MAXMODNAME];
module_t mod;
Fix warnings in preparation for adding -Wall -Wcast-qual to the kernel compile
1999-01-27 21:50:00 +00:00
if ((error = copyinstr(SCARG(uap, name), name, sizeof name, 0)) != 0)
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
goto out;
mod = module_lookupbyname(name);
if (!mod)
error = ENOENT;
else
Move the "retval" (3rd) parameter from all syscall functions and put it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
1997-11-06 19:29:57 +00:00
p->p_retval[0] = mod->id;
This is the kernel linker. To use it, you will first need to apply the patches in freefall:/home/dfr/ld.diffs to your ld sources and set BINFORMAT to aoutkld when linking the kernel. Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00
out:
return error;
}
Reference in New Issue Copy Permalink