Differential D12545 Diff 33718 head/sys/kern/kern_linker.c

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head/sys/kern/kern_linker.c

Show First 20 Lines • Show All 282 Lines • ▼ Show 20 Lines	for (sipp = start; sipp < stop; sipp++) {
/* Call function */		/* Call function */
(((sipp)->func)) ((*sipp)->udata);		(((sipp)->func)) ((*sipp)->udata);
}		}
mtx_unlock(&Giant);		mtx_unlock(&Giant);
sx_xlock(&kld_sx);		sx_xlock(&kld_sx);
}		}

static void		static void
linker_file_register_sysctls(linker_file_t lf)		linker_file_register_sysctls(linker_file_t lf, bool enable)
{		{
struct sysctl_oid start, stop, **oidp;		struct sysctl_oid start, stop, **oidp;

KLD_DPF(FILE,		KLD_DPF(FILE,
("linker_file_register_sysctls: registering SYSCTLs for %s\n",		("linker_file_register_sysctls: registering SYSCTLs for %s\n",
lf->filename));		lf->filename));

sx_assert(&kld_sx, SA_XLOCKED);		sx_assert(&kld_sx, SA_XLOCKED);

if (linker_file_lookup_set(lf, "sysctl_set", &start, &stop, NULL) != 0)		if (linker_file_lookup_set(lf, "sysctl_set", &start, &stop, NULL) != 0)
return;		return;

sx_xunlock(&kld_sx);		sx_xunlock(&kld_sx);
sysctl_wlock();		sysctl_wlock();
for (oidp = start; oidp < stop; oidp++)		for (oidp = start; oidp < stop; oidp++) {
		if (enable)
sysctl_register_oid(*oidp);		sysctl_register_oid(*oidp);
		else
		sysctl_register_disabled_oid(*oidp);
		}
sysctl_wunlock();		sysctl_wunlock();
sx_xlock(&kld_sx);		sx_xlock(&kld_sx);
}		}

static void		static void
		linker_file_enable_sysctls(linker_file_t lf)
		{
		struct sysctl_oid start, stop, **oidp;

		KLD_DPF(FILE,
		("linker_file_enable_sysctls: enable SYSCTLs for %s\n",
		lf->filename));

		sx_assert(&kld_sx, SA_XLOCKED);

		if (linker_file_lookup_set(lf, "sysctl_set", &start, &stop, NULL) != 0)
		return;

		sx_xunlock(&kld_sx);
		sysctl_wlock();
		for (oidp = start; oidp < stop; oidp++)
		sysctl_enable_oid(*oidp);
		sysctl_wunlock();
		sx_xlock(&kld_sx);
		}

		static void
linker_file_unregister_sysctls(linker_file_t lf)		linker_file_unregister_sysctls(linker_file_t lf)
{		{
struct sysctl_oid start, stop, **oidp;		struct sysctl_oid start, stop, **oidp;

KLD_DPF(FILE, ("linker_file_unregister_sysctls: unregistering SYSCTLs"		KLD_DPF(FILE, ("linker_file_unregister_sysctls: unregistering SYSCTLs"
" for %s\n", lf->filename));		" for %s\n", lf->filename));

sx_assert(&kld_sx, SA_XLOCKED);		sx_assert(&kld_sx, SA_XLOCKED);
▲ Show 20 Lines • Show All 104 Lines • ▼ Show 20 Lines	if (error != ENOENT)
foundfile = 1;		foundfile = 1;
if (lf) {		if (lf) {
error = linker_file_register_modules(lf);		error = linker_file_register_modules(lf);
if (error == EEXIST) {		if (error == EEXIST) {
linker_file_unload(lf, LINKER_UNLOAD_FORCE);		linker_file_unload(lf, LINKER_UNLOAD_FORCE);
return (error);		return (error);
}		}
modules = !TAILQ_EMPTY(&lf->modules);		modules = !TAILQ_EMPTY(&lf->modules);
linker_file_register_sysctls(lf);		linker_file_register_sysctls(lf, false);
linker_file_sysinit(lf);		linker_file_sysinit(lf);
lf->flags \|= LINKER_FILE_LINKED;		lf->flags \|= LINKER_FILE_LINKED;

/*		/*
* If all of the modules in this file failed		* If all of the modules in this file failed
* to load, unload the file and return an		* to load, unload the file and return an
* error of ENOEXEC.		* error of ENOEXEC.
*/		*/
if (modules && TAILQ_EMPTY(&lf->modules)) {		if (modules && TAILQ_EMPTY(&lf->modules)) {
linker_file_unload(lf, LINKER_UNLOAD_FORCE);		linker_file_unload(lf, LINKER_UNLOAD_FORCE);
return (ENOEXEC);		return (ENOEXEC);
}		}
		linker_file_enable_sysctls(lf);
EVENTHANDLER_INVOKE(kld_load, lf);		EVENTHANDLER_INVOKE(kld_load, lf);
*result = lf;		*result = lf;
return (0);		return (0);
}		}
}		}
/*		/*
* Less than ideal, but tells the user whether it failed to load or		* Less than ideal, but tells the user whether it failed to load or
* the module was not found.		* the module was not found.
▲ Show 20 Lines • Show All 233 Lines • ▼ Show 20 Lines	#endif
}		}

/*		/*
* Don't try to run SYSUNINITs if we are unloaded due to a		* Don't try to run SYSUNINITs if we are unloaded due to a
* link error.		* link error.
*/		*/
if (file->flags & LINKER_FILE_LINKED) {		if (file->flags & LINKER_FILE_LINKED) {
file->flags &= ~LINKER_FILE_LINKED;		file->flags &= ~LINKER_FILE_LINKED;
linker_file_sysuninit(file);
linker_file_unregister_sysctls(file);		linker_file_unregister_sysctls(file);
		linker_file_sysuninit(file);
}		}
TAILQ_REMOVE(&linker_files, file, link);		TAILQ_REMOVE(&linker_files, file, link);

if (file->deps) {		if (file->deps) {
for (i = 0; i < file->ndeps; i++)		for (i = 0; i < file->ndeps; i++)
linker_file_unload(file->deps[i], flags);		linker_file_unload(file->deps[i], flags);
free(file->deps, M_LINKER);		free(file->deps, M_LINKER);
file->deps = NULL;		file->deps = NULL;
▲ Show 20 Lines • Show All 932 Lines • ▼ Show 20 Lines	if (error) {
goto fail;		goto fail;
}		}
linker_file_register_modules(lf);		linker_file_register_modules(lf);
if (!TAILQ_EMPTY(&lf->modules))		if (!TAILQ_EMPTY(&lf->modules))
lf->flags \|= LINKER_FILE_MODULES;		lf->flags \|= LINKER_FILE_MODULES;
if (linker_file_lookup_set(lf, "sysinit_set", &si_start,		if (linker_file_lookup_set(lf, "sysinit_set", &si_start,
&si_stop, NULL) == 0)		&si_stop, NULL) == 0)
sysinit_add(si_start, si_stop);		sysinit_add(si_start, si_stop);
linker_file_register_sysctls(lf);		linker_file_register_sysctls(lf, true);
lf->flags \|= LINKER_FILE_LINKED;		lf->flags \|= LINKER_FILE_LINKED;
continue;		continue;
fail:		fail:
TAILQ_REMOVE(&depended_files, lf, loaded);		TAILQ_REMOVE(&depended_files, lf, loaded);
linker_file_unload(lf, LINKER_UNLOAD_FORCE);		linker_file_unload(lf, LINKER_UNLOAD_FORCE);
}		}
sx_xunlock(&kld_sx);		sx_xunlock(&kld_sx);
/* woohoo! we made it! */		/* woohoo! we made it! */
▲ Show 20 Lines • Show All 553 Lines • Show Last 20 Lines