File Manager

003 File Manager

Current Path: /usr/src/sys/kern

📁 ..
📄 Make.tags.inc(2.13 KB)
📄 Makefile(302 B)
📄 bus_if.m(26.31 KB)
📄 capabilities.conf(13.67 KB)
📄 clock_if.m(1.7 KB)
📄 cpufreq_if.m(2.27 KB)
📄 device_if.m(10.41 KB)
📄 firmw.S(2.15 KB)
📄 genassym.sh(1.11 KB)
📄 genoffset.c(1.68 KB)
📄 genoffset.sh(3.58 KB)
📄 imgact_aout.c(9.45 KB)
📄 imgact_binmisc.c(18.64 KB)
📄 imgact_elf.c(76.32 KB)
📄 imgact_elf32.c(1.47 KB)
📄 imgact_elf64.c(1.47 KB)
📄 imgact_shell.c(8.41 KB)
📄 init_main.c(24.31 KB)
📄 init_sysent.c(95.3 KB)
📄 kern_acct.c(19.03 KB)
📄 kern_alq.c(24.97 KB)
📄 kern_clock.c(21.12 KB)
📄 kern_clocksource.c(23.34 KB)
📄 kern_condvar.c(11.28 KB)
📄 kern_conf.c(36.14 KB)
📄 kern_cons.c(15.75 KB)
📄 kern_context.c(3.59 KB)
📄 kern_cpu.c(30.77 KB)
📄 kern_cpuset.c(59.78 KB)
📄 kern_ctf.c(8.73 KB)
📄 kern_descrip.c(112.87 KB)
📄 kern_dtrace.c(2.94 KB)
📄 kern_dump.c(8.51 KB)
📄 kern_environment.c(22.75 KB)
📄 kern_et.c(7.1 KB)
📄 kern_event.c(62.49 KB)
📄 kern_exec.c(46.67 KB)
📄 kern_exit.c(34.61 KB)
📄 kern_fail.c(29.32 KB)
📄 kern_ffclock.c(12.66 KB)
📄 kern_fork.c(28.29 KB)
📄 kern_hhook.c(13.58 KB)
📄 kern_idle.c(2.74 KB)
📄 kern_intr.c(40.44 KB)
📄 kern_jail.c(112.67 KB)
📄 kern_kcov.c(15.32 KB)
📄 kern_khelp.c(9.45 KB)
📄 kern_kthread.c(11.8 KB)
📄 kern_ktr.c(11.93 KB)
📄 kern_ktrace.c(31.41 KB)
📄 kern_linker.c(54.3 KB)
📄 kern_lock.c(46.99 KB)
📄 kern_lockf.c(64.46 KB)
📄 kern_lockstat.c(3.8 KB)
📄 kern_loginclass.c(6.69 KB)
📄 kern_malloc.c(37.09 KB)
📄 kern_mbuf.c(43.16 KB)
📄 kern_mib.c(24.26 KB)
📄 kern_module.c(11.05 KB)
📄 kern_mtxpool.c(5.82 KB)
📄 kern_mutex.c(33.62 KB)
📄 kern_ntptime.c(32.49 KB)
📄 kern_osd.c(12.37 KB)
📄 kern_physio.c(5.74 KB)
📄 kern_pmc.c(8.89 KB)
📄 kern_poll.c(15.86 KB)
📄 kern_priv.c(9.14 KB)
📄 kern_proc.c(80.01 KB)
📄 kern_procctl.c(19.48 KB)
📄 kern_prot.c(57.94 KB)
📄 kern_racct.c(34.01 KB)
📄 kern_rangelock.c(8.67 KB)
📄 kern_rctl.c(53.87 KB)
📄 kern_resource.c(36.66 KB)
📄 kern_rmlock.c(28.27 KB)
📄 kern_rwlock.c(40.72 KB)
📄 kern_sdt.c(2.05 KB)
📄 kern_sema.c(4.85 KB)
📄 kern_sendfile.c(33.97 KB)
📄 kern_sharedpage.c(10.37 KB)
📄 kern_shutdown.c(43.34 KB)
📄 kern_sig.c(101.89 KB)
📄 kern_switch.c(13.85 KB)
📄 kern_sx.c(40.27 KB)
📄 kern_synch.c(18.17 KB)
📄 kern_syscalls.c(6.74 KB)
📄 kern_sysctl.c(67.24 KB)
📄 kern_tc.c(55.73 KB)
📄 kern_thr.c(14.14 KB)
📄 kern_thread.c(41.75 KB)
📄 kern_time.c(40.89 KB)
📄 kern_timeout.c(43.08 KB)
📄 kern_tslog.c(3.44 KB)
📄 kern_ubsan.c(50.74 KB)
📄 kern_umtx.c(107.14 KB)
📄 kern_uuid.c(11.68 KB)
📄 kern_xxx.c(10.44 KB)
📄 ksched.c(6.56 KB)
📄 link_elf.c(47.99 KB)
📄 link_elf_obj.c(44.41 KB)
📄 linker_if.m(3.96 KB)
📄 makesyscalls.sh(23.57 KB)
📄 md4c.c(7.89 KB)
📄 md5c.c(9.56 KB)
📄 msi_if.m(2.48 KB)
📄 p1003_1b.c(8.84 KB)
📄 pic_if.m(3.9 KB)
📄 posix4_mib.c(5.59 KB)
📄 sched_4bsd.c(45.03 KB)
📄 sched_ule.c(82.65 KB)
📄 serdev_if.m(3.49 KB)
📄 stack_protector.c(613 B)
📄 subr_acl_nfs4.c(37.42 KB)
📄 subr_acl_posix1e.c(17.71 KB)
📄 subr_atomic64.c(3.97 KB)
📄 subr_autoconf.c(7.7 KB)
📄 subr_blist.c(31.88 KB)
📄 subr_boot.c(5.8 KB)
📄 subr_bufring.c(2.21 KB)
📄 subr_bus.c(145.4 KB)
📄 subr_bus_dma.c(19.67 KB)
📄 subr_busdma_bufalloc.c(5.24 KB)
📄 subr_capability.c(11.93 KB)
📄 subr_clock.c(10.61 KB)
📄 subr_compressor.c(13.11 KB)
📄 subr_counter.c(4.44 KB)
📄 subr_coverage.c(6.17 KB)
📄 subr_csan.c(25.39 KB)
📄 subr_devmap.c(9.8 KB)
📄 subr_devstat.c(16.21 KB)
📄 subr_disk.c(8.54 KB)
📄 subr_dummy_vdso_tc.c(1.7 KB)
📄 subr_early.c(2.26 KB)
📄 subr_epoch.c(25.02 KB)
📄 subr_eventhandler.c(9.17 KB)
📄 subr_fattime.c(9.98 KB)
📄 subr_filter.c(12.2 KB)
📄 subr_firmware.c(13.88 KB)
📄 subr_gtaskqueue.c(20.19 KB)
📄 subr_hash.c(4.8 KB)
📄 subr_hints.c(12.87 KB)
📄 subr_intr.c(40.61 KB)
📄 subr_kdb.c(16.13 KB)
📄 subr_kobj.c(7.1 KB)
📄 subr_lock.c(18.81 KB)
📄 subr_log.c(7.64 KB)
📄 subr_mchain.c(11.06 KB)
📄 subr_module.c(12.98 KB)
📄 subr_msgbuf.c(10.6 KB)
📄 subr_param.c(10.93 KB)
📄 subr_pcpu.c(10.18 KB)
📄 subr_pctrie.c(20.99 KB)
📄 subr_physmem.c(11.52 KB)
📄 subr_pidctrl.c(5.43 KB)
📄 subr_power.c(3.13 KB)
📄 subr_prf.c(27.42 KB)
📄 subr_prng.c(3.36 KB)
📄 subr_prof.c(15.43 KB)
📄 subr_rangeset.c(8.5 KB)
📄 subr_rman.c(27.61 KB)
📄 subr_rtc.c(11.42 KB)
📄 subr_sbuf.c(20.53 KB)
📄 subr_scanf.c(15.59 KB)
📄 subr_sfbuf.c(6.17 KB)
📄 subr_sglist.c(22.83 KB)
📄 subr_sleepqueue.c(39.43 KB)
📄 subr_smp.c(31.62 KB)
📄 subr_smr.c(20.17 KB)
📄 subr_stack.c(6.47 KB)
📄 subr_stats.c(103.01 KB)
📄 subr_syscall.c(7.98 KB)
📄 subr_taskqueue.c(21.1 KB)
📄 subr_terminal.c(15.52 KB)
📄 subr_trap.c(10.87 KB)
📄 subr_turnstile.c(35.58 KB)
📄 subr_uio.c(11.38 KB)
📄 subr_unit.c(22.97 KB)
📄 subr_vmem.c(43.25 KB)
📄 subr_witness.c(84.59 KB)
📄 sys_capability.c(15.06 KB)
📄 sys_eventfd.c(8.42 KB)
📄 sys_generic.c(44.22 KB)
📄 sys_getrandom.c(4.21 KB)
📄 sys_pipe.c(45.14 KB)
📄 sys_procdesc.c(14.57 KB)
📄 sys_process.c(30.73 KB)
📄 sys_socket.c(20.11 KB)
📄 syscalls.c(22.73 KB)
📄 syscalls.master(60.26 KB)
📄 systrace_args.c(178.49 KB)
📄 sysv_ipc.c(6.53 KB)
📄 sysv_msg.c(48.65 KB)
📄 sysv_sem.c(49.85 KB)
📄 sysv_shm.c(43.93 KB)
📄 tty.c(55.14 KB)
📄 tty_compat.c(11.46 KB)
📄 tty_info.c(9.93 KB)
📄 tty_inq.c(12.22 KB)
📄 tty_outq.c(8.74 KB)
📄 tty_pts.c(19.74 KB)
📄 tty_tty.c(2.83 KB)
📄 tty_ttydisc.c(28.6 KB)
📄 uipc_accf.c(8.07 KB)
📄 uipc_debug.c(12.42 KB)
📄 uipc_domain.c(13.13 KB)
📄 uipc_ktls.c(55.7 KB)
📄 uipc_mbuf.c(52.45 KB)
📄 uipc_mbuf2.c(12.64 KB)
📄 uipc_mbufhash.c(4.9 KB)
📄 uipc_mqueue.c(64.64 KB)
📄 uipc_sem.c(25.18 KB)
📄 uipc_shm.c(50.47 KB)
📄 uipc_sockbuf.c(42.9 KB)
📄 uipc_socket.c(110.61 KB)
📄 uipc_syscalls.c(35.94 KB)
📄 uipc_usrreq.c(75.11 KB)
📄 vfs_acl.c(14.5 KB)
📄 vfs_aio.c(76.32 KB)
📄 vfs_bio.c(145.39 KB)
📄 vfs_cache.c(143.09 KB)
📄 vfs_cluster.c(28.36 KB)
📄 vfs_default.c(33.16 KB)
📄 vfs_export.c(14.55 KB)
📄 vfs_extattr.c(17.91 KB)
📄 vfs_hash.c(6 KB)
📄 vfs_init.c(15.86 KB)
📄 vfs_lookup.c(45.48 KB)
📄 vfs_mount.c(62.58 KB)
📄 vfs_mountroot.c(26.23 KB)
📄 vfs_subr.c(167.52 KB)
📄 vfs_syscalls.c(106.86 KB)
📄 vfs_vnops.c(86.28 KB)
📄 vnode_if.src(13.66 KB)

Editing: uipc_accf.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2000 Paycounter, Inc.
 * Copyright (c) 2005 Robert N. M. Watson
 * Author: Alfred Perlstein <alfred@paycounter.com>, <alfred@FreeBSD.org>
 * 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#define ACCEPT_FILTER_MOD

#include "opt_param.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/domain.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/protosw.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/queue.h>

static struct mtx accept_filter_mtx;
MTX_SYSINIT(accept_filter, &accept_filter_mtx, "accept_filter_mtx",
	MTX_DEF);
#define	ACCEPT_FILTER_LOCK()	mtx_lock(&accept_filter_mtx)
#define	ACCEPT_FILTER_UNLOCK()	mtx_unlock(&accept_filter_mtx)

static SLIST_HEAD(, accept_filter) accept_filtlsthd =
	SLIST_HEAD_INITIALIZER(accept_filtlsthd);

MALLOC_DEFINE(M_ACCF, "accf", "accept filter data");

static int unloadable = 0;

SYSCTL_NODE(_net, OID_AUTO, accf, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
    "Accept filters");
SYSCTL_INT(_net_accf, OID_AUTO, unloadable, CTLFLAG_RW, &unloadable, 0,
	"Allow unload of accept filters (not recommended)");

/*
 * Must be passed a malloc'd structure so we don't explode if the kld is
 * unloaded, we leak the struct on deallocation to deal with this, but if a
 * filter is loaded with the same name as a leaked one we re-use the entry.
 */
int
accept_filt_add(struct accept_filter *filt)
{
	struct accept_filter *p;

ACCEPT_FILTER_LOCK();
	SLIST_FOREACH(p, &accept_filtlsthd, accf_next)
		if (strcmp(p->accf_name, filt->accf_name) == 0)  {
			if (p->accf_callback != NULL) {
				ACCEPT_FILTER_UNLOCK();
				return (EEXIST);
			} else {
				p->accf_callback = filt->accf_callback;
				ACCEPT_FILTER_UNLOCK();
				free(filt, M_ACCF);
				return (0);
			}
		}
				
	if (p == NULL)
		SLIST_INSERT_HEAD(&accept_filtlsthd, filt, accf_next);
	ACCEPT_FILTER_UNLOCK();
	return (0);
}

int
accept_filt_del(char *name)
{
	struct accept_filter *p;

p = accept_filt_get(name);
	if (p == NULL)
		return (ENOENT);

p->accf_callback = NULL;
	return (0);
}

struct accept_filter *
accept_filt_get(char *name)
{
	struct accept_filter *p;

ACCEPT_FILTER_LOCK();
	SLIST_FOREACH(p, &accept_filtlsthd, accf_next)
		if (strcmp(p->accf_name, name) == 0)
			break;
	ACCEPT_FILTER_UNLOCK();

return (p);
}

int
accept_filt_generic_mod_event(module_t mod, int event, void *data)
{
	struct accept_filter *p;
	struct accept_filter *accfp = (struct accept_filter *) data;
	int error;

switch (event) {
	case MOD_LOAD:
		p = malloc(sizeof(*p), M_ACCF, M_WAITOK);
		bcopy(accfp, p, sizeof(*p));
		error = accept_filt_add(p);
		break;

case MOD_UNLOAD:
		/*
		 * Do not support unloading yet. we don't keep track of
		 * refcounts and unloading an accept filter callback and then
		 * having it called is a bad thing.  A simple fix would be to
		 * track the refcount in the struct accept_filter.
		 */
		if (unloadable != 0) {
			error = accept_filt_del(accfp->accf_name);
		} else
			error = EOPNOTSUPP;
		break;

case MOD_SHUTDOWN:
		error = 0;
		break;

default:
		error = EOPNOTSUPP;
		break;
	}

return (error);
}

int
accept_filt_getopt(struct socket *so, struct sockopt *sopt)
{
	struct accept_filter_arg *afap;
	int error;

error = 0;
	afap = malloc(sizeof(*afap), M_TEMP, M_WAITOK | M_ZERO);
	SOCK_LOCK(so);
	if ((so->so_options & SO_ACCEPTCONN) == 0) {
		error = EINVAL;
		goto out;
	}
	if (so->sol_accept_filter == NULL) {
		error = EINVAL;
		goto out;
	}
	strcpy(afap->af_name, so->sol_accept_filter->accf_name);
	if (so->sol_accept_filter_str != NULL)
		strcpy(afap->af_arg, so->sol_accept_filter_str);
out:
	SOCK_UNLOCK(so);
	if (error == 0)
		error = sooptcopyout(sopt, afap, sizeof(*afap));
	free(afap, M_TEMP);
	return (error);
}

int
accept_filt_setopt(struct socket *so, struct sockopt *sopt)
{
	struct accept_filter_arg *afap;
	struct accept_filter *afp;
	char *accept_filter_str = NULL;
	void *accept_filter_arg = NULL;
	int error;

/*
	 * Handle the simple delete case first.
	 */
	if (sopt == NULL || sopt->sopt_val == NULL) {
		struct socket *sp, *sp1;
		int wakeup;

SOCK_LOCK(so);
		if ((so->so_options & SO_ACCEPTCONN) == 0) {
			SOCK_UNLOCK(so);
			return (EINVAL);
		}
		if (so->sol_accept_filter == NULL) {
			SOCK_UNLOCK(so);
			return (0);
		}
		if (so->sol_accept_filter->accf_destroy != NULL)
			so->sol_accept_filter->accf_destroy(so);
		if (so->sol_accept_filter_str != NULL)
			free(so->sol_accept_filter_str, M_ACCF);
		so->sol_accept_filter = NULL;
		so->sol_accept_filter_arg = NULL;
		so->sol_accept_filter_str = NULL;
		so->so_options &= ~SO_ACCEPTFILTER;

/*
		 * Move from incomplete queue to complete only those
		 * connections, that are blocked by us.
		 */
		wakeup = 0;
		TAILQ_FOREACH_SAFE(sp, &so->sol_incomp, so_list, sp1) {
			SOCK_LOCK(sp);
			if (sp->so_options & SO_ACCEPTFILTER) {
				TAILQ_REMOVE(&so->sol_incomp, sp, so_list);
				TAILQ_INSERT_TAIL(&so->sol_comp, sp, so_list);
				sp->so_qstate = SQ_COMP;
				sp->so_options &= ~SO_ACCEPTFILTER;
				so->sol_incqlen--;
				so->sol_qlen++;
				wakeup = 1;
			}
			SOCK_UNLOCK(sp);
		}
		if (wakeup)
			solisten_wakeup(so);  /* unlocks */
		else
			SOLISTEN_UNLOCK(so);
		return (0);
	}

/*
	 * Pre-allocate any memory we may need later to avoid blocking at
	 * untimely moments.  This does not optimize for invalid arguments.
	 */
	afap = malloc(sizeof(*afap), M_TEMP, M_WAITOK);
	error = sooptcopyin(sopt, afap, sizeof *afap, sizeof *afap);
	afap->af_name[sizeof(afap->af_name)-1] = '\0';
	afap->af_arg[sizeof(afap->af_arg)-1] = '\0';
	if (error) {
		free(afap, M_TEMP);
		return (error);
	}
	afp = accept_filt_get(afap->af_name);
	if (afp == NULL) {
		free(afap, M_TEMP);
		return (ENOENT);
	}
	if (afp->accf_create != NULL && afap->af_name[0] != '\0') {
		size_t len = strlen(afap->af_name) + 1;
		accept_filter_str = malloc(len, M_ACCF, M_WAITOK);
		strcpy(accept_filter_str, afap->af_name);
	}

/*
	 * Require a listen socket; don't try to replace an existing filter
	 * without first removing it.
	 */
	SOCK_LOCK(so);
	if ((so->so_options & SO_ACCEPTCONN) == 0 ||
	    so->sol_accept_filter != NULL) {
		error = EINVAL;
		goto out;
	}

/*
	 * Invoke the accf_create() method of the filter if required.  The
	 * socket mutex is held over this call, so create methods for filters
	 * can't block.
	 */
	if (afp->accf_create != NULL) {
		accept_filter_arg = afp->accf_create(so, afap->af_arg);
		if (accept_filter_arg == NULL) {
			error = EINVAL;
			goto out;
		}
	}
	so->sol_accept_filter = afp;
	so->sol_accept_filter_arg = accept_filter_arg;
	so->sol_accept_filter_str = accept_filter_str;
	accept_filter_str = NULL;
	so->so_options |= SO_ACCEPTFILTER;
out:
	SOCK_UNLOCK(so);
	if (accept_filter_str != NULL)
		free(accept_filter_str, M_ACCF);
	free(afap, M_TEMP);
	return (error);
}

003 File Manager

Editing: uipc_accf.c

Upload File

Create Folder