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📄 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: subr_module.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 1998 Michael Smith
 * All rights reserved.
 * Copyright (c) 2020 NetApp Inc.
 * Copyright (c) 2020 Klara Inc.
 *
 * 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("$FreeBSD$");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/linker.h>
#include <sys/sbuf.h>
#include <sys/sysctl.h>

#include <machine/metadata.h>

#include <vm/vm.h>
#include <vm/vm_extern.h>

/*
 * Preloaded module support
 */

vm_offset_t preload_addr_relocate = 0;
caddr_t preload_metadata;

/*
 * Search for the preloaded module (name)
 */
caddr_t
preload_search_by_name(const char *name)
{
    caddr_t	curp;
    uint32_t	*hdr;
    int		next;
    
    if (preload_metadata != NULL) {
	curp = preload_metadata;
	for (;;) {
	    hdr = (uint32_t *)curp;
	    if (hdr[0] == 0 && hdr[1] == 0)
		break;

/* Search for a MODINFO_NAME field */
	    if ((hdr[0] == MODINFO_NAME) &&
		!strcmp(name, curp + sizeof(uint32_t) * 2))
		return(curp);

/* skip to next field */
	    next = sizeof(uint32_t) * 2 + hdr[1];
	    next = roundup(next, sizeof(u_long));
	    curp += next;
	}
    }
    return(NULL);
}

/*
 * Search for the first preloaded module of (type)
 */
caddr_t
preload_search_by_type(const char *type)
{
    caddr_t	curp, lname;
    uint32_t	*hdr;
    int		next;

if (preload_metadata != NULL) {
	curp = preload_metadata;
	lname = NULL;
	for (;;) {
	    hdr = (uint32_t *)curp;
	    if (hdr[0] == 0 && hdr[1] == 0)
		break;

/* remember the start of each record */
	    if (hdr[0] == MODINFO_NAME)
		lname = curp;

/* Search for a MODINFO_TYPE field */
	    if ((hdr[0] == MODINFO_TYPE) &&
		!strcmp(type, curp + sizeof(uint32_t) * 2))
		return(lname);

/* skip to next field */
	    next = sizeof(uint32_t) * 2 + hdr[1];
	    next = roundup(next, sizeof(u_long));
	    curp += next;
	}
    }
    return(NULL);
}

/*
 * Walk through the preloaded module list
 */
caddr_t
preload_search_next_name(caddr_t base)
{
    caddr_t	curp;
    uint32_t	*hdr;
    int		next;
    
    if (preload_metadata != NULL) {
	/* Pick up where we left off last time */
	if (base) {
	    /* skip to next field */
	    curp = base;
	    hdr = (uint32_t *)curp;
	    next = sizeof(uint32_t) * 2 + hdr[1];
	    next = roundup(next, sizeof(u_long));
	    curp += next;
	} else
	    curp = preload_metadata;

for (;;) {
	    hdr = (uint32_t *)curp;
	    if (hdr[0] == 0 && hdr[1] == 0)
		break;

/* Found a new record? */
	    if (hdr[0] == MODINFO_NAME)
		return curp;

/* skip to next field */
	    next = sizeof(uint32_t) * 2 + hdr[1];
	    next = roundup(next, sizeof(u_long));
	    curp += next;
	}
    }
    return(NULL);
}

/*
 * Given a preloaded module handle (mod), return a pointer
 * to the data for the attribute (inf).
 */
caddr_t
preload_search_info(caddr_t mod, int inf)
{
    caddr_t	curp;
    uint32_t	*hdr;
    uint32_t	type = 0;
    int		next;

if (mod == NULL)
    	return (NULL);

curp = mod;
    for (;;) {
	hdr = (uint32_t *)curp;
	/* end of module data? */
	if (hdr[0] == 0 && hdr[1] == 0)
	    break;
	/* 
	 * We give up once we've looped back to what we were looking at 
	 * first - this should normally be a MODINFO_NAME field.
	 */
	if (type == 0) {
	    type = hdr[0];
	} else {
	    if (hdr[0] == type)
		break;
	}

/* 
	 * Attribute match? Return pointer to data.
	 * Consumer may safely assume that size value precedes	
	 * data.
	 */
	if (hdr[0] == inf)
	    return(curp + (sizeof(uint32_t) * 2));

/* skip to next field */
	next = sizeof(uint32_t) * 2 + hdr[1];
	next = roundup(next, sizeof(u_long));
	curp += next;
    }
    return(NULL);
}

/*
 * Delete a preload record by name.
 */
void
preload_delete_name(const char *name)
{
    caddr_t	addr, curp;
    uint32_t	*hdr, sz;
    int		next;
    int		clearing;

addr = 0;
    sz = 0;
    
    if (preload_metadata != NULL) {
	clearing = 0;
	curp = preload_metadata;
	for (;;) {
	    hdr = (uint32_t *)curp;
	    if (hdr[0] == MODINFO_NAME || (hdr[0] == 0 && hdr[1] == 0)) {
		/* Free memory used to store the file. */
		if (addr != 0 && sz != 0)
		    kmem_bootstrap_free((vm_offset_t)addr, sz);
		addr = 0;
		sz = 0;

if (hdr[0] == 0)
		    break;
		if (!strcmp(name, curp + sizeof(uint32_t) * 2))
		    clearing = 1;	/* got it, start clearing */
		else if (clearing) {
		    clearing = 0;	/* at next one now.. better stop */
		}
	    }
	    if (clearing) {
		if (hdr[0] == MODINFO_ADDR)
		    addr = *(caddr_t *)(curp + sizeof(uint32_t) * 2);
		else if (hdr[0] == MODINFO_SIZE)
		    sz = *(uint32_t *)(curp + sizeof(uint32_t) * 2);
		hdr[0] = MODINFO_EMPTY;
	    }

/* skip to next field */
	    next = sizeof(uint32_t) * 2 + hdr[1];
	    next = roundup(next, sizeof(u_long));
	    curp += next;
	}
    }
}

void *
preload_fetch_addr(caddr_t mod)
{
	caddr_t *mdp;

mdp = (caddr_t *)preload_search_info(mod, MODINFO_ADDR);
	if (mdp == NULL)
		return (NULL);
	return (*mdp + preload_addr_relocate);
}

size_t
preload_fetch_size(caddr_t mod)
{
	size_t *mdp;

mdp = (size_t *)preload_search_info(mod, MODINFO_SIZE);
	if (mdp == NULL)
		return (0);
	return (*mdp);
}

/* Called from locore.  Convert physical pointers to kvm. Sigh. */
void
preload_bootstrap_relocate(vm_offset_t offset)
{
    caddr_t	curp;
    uint32_t	*hdr;
    vm_offset_t	*ptr;
    int		next;
    
    if (preload_metadata != NULL) {
	curp = preload_metadata;
	for (;;) {
	    hdr = (uint32_t *)curp;
	    if (hdr[0] == 0 && hdr[1] == 0)
		break;

/* Deal with the ones that we know we have to fix */
	    switch (hdr[0]) {
	    case MODINFO_ADDR:
	    case MODINFO_METADATA|MODINFOMD_FONT:
	    case MODINFO_METADATA|MODINFOMD_SSYM:
	    case MODINFO_METADATA|MODINFOMD_ESYM:
		ptr = (vm_offset_t *)(curp + (sizeof(uint32_t) * 2));
		*ptr += offset;
		break;
	    }
	    /* The rest is beyond us for now */

/* skip to next field */
	    next = sizeof(uint32_t) * 2 + hdr[1];
	    next = roundup(next, sizeof(u_long));
	    curp += next;
	}
    }
}

/*
 * Parse the modinfo type and append to the provided sbuf.
 */
static void
preload_modinfo_type(struct sbuf *sbp, int type)
{

if ((type & MODINFO_METADATA) == 0) {
		switch (type) {
		case MODINFO_END:
			sbuf_cat(sbp, "MODINFO_END");
			break;
		case MODINFO_NAME:
			sbuf_cat(sbp, "MODINFO_NAME");
			break;
		case MODINFO_TYPE:
			sbuf_cat(sbp, "MODINFO_TYPE");
			break;
		case MODINFO_ADDR:
			sbuf_cat(sbp, "MODINFO_ADDR");
			break;
		case MODINFO_SIZE:
			sbuf_cat(sbp, "MODINFO_SIZE");
			break;
		case MODINFO_EMPTY:
			sbuf_cat(sbp, "MODINFO_EMPTY");
			break;
		case MODINFO_ARGS:
			sbuf_cat(sbp, "MODINFO_ARGS");
			break;
		default:
			sbuf_cat(sbp, "unrecognized modinfo attribute");
		}

return;
	}

sbuf_cat(sbp, "MODINFO_METADATA | ");
	switch (type & ~MODINFO_METADATA) {
	case MODINFOMD_ELFHDR:
		sbuf_cat(sbp, "MODINFOMD_ELFHDR");
		break;
	case MODINFOMD_SSYM:
		sbuf_cat(sbp, "MODINFOMD_SSYM");
		break;
	case MODINFOMD_ESYM:
		sbuf_cat(sbp, "MODINFOMD_ESYM");
		break;
	case MODINFOMD_DYNAMIC:
		sbuf_cat(sbp, "MODINFOMD_DYNAMIC");
		break;
	case MODINFOMD_ENVP:
		sbuf_cat(sbp, "MODINFOMD_ENVP");
		break;
	case MODINFOMD_HOWTO:
		sbuf_cat(sbp, "MODINFOMD_HOWTO");
		break;
	case MODINFOMD_KERNEND:
		sbuf_cat(sbp, "MODINFOMD_KERNEND");
		break;
	case MODINFOMD_SHDR:
		sbuf_cat(sbp, "MODINFOMD_SHDR");
		break;
	case MODINFOMD_CTORS_ADDR:
		sbuf_cat(sbp, "MODINFOMD_CTORS_ADDR");
		break;
	case MODINFOMD_CTORS_SIZE:
		sbuf_cat(sbp, "MODINFOMD_CTORS_SIZE");
		break;
	case MODINFOMD_FW_HANDLE:
		sbuf_cat(sbp, "MODINFOMD_FW_HANDLE");
		break;
	case MODINFOMD_KEYBUF:
		sbuf_cat(sbp, "MODINFOMD_KEYBUF");
		break;
#ifdef MODINFOMD_SMAP
	case MODINFOMD_SMAP:
		sbuf_cat(sbp, "MODINFOMD_SMAP");
		break;
#endif
#ifdef MODINFOMD_SMAP_XATTR
	case MODINFOMD_SMAP_XATTR:
		sbuf_cat(sbp, "MODINFOMD_SMAP_XATTR");
		break;
#endif
#ifdef MODINFOMD_DTBP
	case MODINFOMD_DTBP:
		sbuf_cat(sbp, "MODINFOMD_DTBP");
		break;
#endif
#ifdef MODINFOMD_EFI_MAP
	case MODINFOMD_EFI_MAP:
		sbuf_cat(sbp, "MODINFOMD_EFI_MAP");
		break;
#endif
#ifdef MODINFOMD_EFI_FB
	case MODINFOMD_EFI_FB:
		sbuf_cat(sbp, "MODINFOMD_EFI_FB");
		break;
#endif
#ifdef MODINFOMD_MODULEP
	case MODINFOMD_MODULEP:
		sbuf_cat(sbp, "MODINFOMD_MODULEP");
		break;
#endif
#ifdef MODINFOMD_VBE_FB
	case MODINFOMD_VBE_FB:
		sbuf_cat(sbp, "MODINFOMD_VBE_FB");
		break;
#endif
#ifdef MODINFOMD_FONT
	case MODINFOMD_FONT:
		sbuf_cat(sbp, "MODINFOMD_FONT");
		break;
#endif
	default:
		sbuf_cat(sbp, "unrecognized metadata type");
	}
}

/*
 * Print the modinfo value, depending on type.
 */
static void
preload_modinfo_value(struct sbuf *sbp, uint32_t *bptr, int type, int len)
{
#ifdef __LP64__
#define sbuf_print_vmoffset(sb, o)	sbuf_printf(sb, "0x%016lx", o);
#else
#define sbuf_print_vmoffset(sb, o)	sbuf_printf(sb, "0x%08x", o);
#endif

switch (type) {
	case MODINFO_NAME:
	case MODINFO_TYPE:
	case MODINFO_ARGS:
		sbuf_printf(sbp, "%s", (char *)bptr);
		break;
	case MODINFO_SIZE:
	case MODINFO_METADATA | MODINFOMD_CTORS_SIZE:
		sbuf_printf(sbp, "%lu", *(u_long *)bptr);
		break;
	case MODINFO_ADDR:
	case MODINFO_METADATA | MODINFOMD_SSYM:
	case MODINFO_METADATA | MODINFOMD_ESYM:
	case MODINFO_METADATA | MODINFOMD_DYNAMIC:
	case MODINFO_METADATA | MODINFOMD_KERNEND:
	case MODINFO_METADATA | MODINFOMD_ENVP:
	case MODINFO_METADATA | MODINFOMD_CTORS_ADDR:
#ifdef MODINFOMD_SMAP
	case MODINFO_METADATA | MODINFOMD_SMAP:
#endif
#ifdef MODINFOMD_SMAP_XATTR
	case MODINFO_METADATA | MODINFOMD_SMAP_XATTR:
#endif
#ifdef MODINFOMD_DTBP
	case MODINFO_METADATA | MODINFOMD_DTBP:
#endif
#ifdef MODINFOMD_EFI_FB
	case MODINFO_METADATA | MODINFOMD_EFI_FB:
#endif
#ifdef MODINFOMD_VBE_FB
	case MODINFO_METADATA | MODINFOMD_VBE_FB:
#endif
#ifdef MODINFOMD_FONT
	case MODINFO_METADATA | MODINFOMD_FONT:
#endif
		sbuf_print_vmoffset(sbp, *(vm_offset_t *)bptr);
		break;
	case MODINFO_METADATA | MODINFOMD_HOWTO:
		sbuf_printf(sbp, "0x%08x", *bptr);
		break;
	case MODINFO_METADATA | MODINFOMD_SHDR:
	case MODINFO_METADATA | MODINFOMD_ELFHDR:
	case MODINFO_METADATA | MODINFOMD_FW_HANDLE:
	case MODINFO_METADATA | MODINFOMD_KEYBUF:
#ifdef MODINFOMD_EFI_MAP
	case MODINFO_METADATA | MODINFOMD_EFI_MAP:
#endif
		/* Don't print data buffers. */
		sbuf_cat(sbp, "buffer contents omitted");
		break;
	default:
		break;
	}
#undef sbuf_print_vmoffset
}

static void
preload_dump_internal(struct sbuf *sbp)
{
	uint32_t *bptr, type, len;

KASSERT(preload_metadata != NULL,
	    ("%s called without setting up preload_metadata", __func__));

/*
	 * Iterate through the TLV-encoded sections.
	 */
	bptr = (uint32_t *)preload_metadata;
	sbuf_putc(sbp, '\n');
	while (bptr[0] != MODINFO_END || bptr[1] != MODINFO_END) {
		sbuf_printf(sbp, " %p:\n", bptr);
		type = *bptr++;
		len = *bptr++;

sbuf_printf(sbp, "\ttype:\t(%#04x) ", type);
		preload_modinfo_type(sbp, type);
		sbuf_putc(sbp, '\n');
		sbuf_printf(sbp, "\tlen:\t%u\n", len);
		sbuf_cat(sbp, "\tvalue:\t");
		preload_modinfo_value(sbp, bptr, type, len);
		sbuf_putc(sbp, '\n');

bptr += roundup(len, sizeof(u_long)) / sizeof(uint32_t);
	}
}

/*
 * Print the preloaded data to the console. Called from the machine-dependent
 * initialization routines, e.g. hammer_time().
 */
void
preload_dump(void)
{
	char buf[512];
	struct sbuf sb;

/*
	 * This function is expected to be called before malloc is available,
	 * so use a static buffer and struct sbuf.
	 */
	sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
	sbuf_set_drain(&sb, sbuf_printf_drain, NULL);
	preload_dump_internal(&sb);

sbuf_finish(&sb);
	sbuf_delete(&sb);
}

static int
sysctl_preload_dump(SYSCTL_HANDLER_ARGS)
{
	struct sbuf sb;
	int error;

if (preload_metadata == NULL)
		return (EINVAL);

sbuf_new_for_sysctl(&sb, NULL, 512, req);
	preload_dump_internal(&sb);

error = sbuf_finish(&sb);
	sbuf_delete(&sb);

return (error);
}
SYSCTL_PROC(_debug, OID_AUTO, dump_modinfo,
    CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
    NULL, 0, sysctl_preload_dump, "A",
    "pretty-print the bootloader metadata");

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