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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: kern_dump.c

/*-
 * Copyright (c) 2002 Marcel Moolenaar
 * 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 ``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 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/conf.h>
#include <sys/cons.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/kerneldump.h>
#include <sys/watchdog.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_page.h>
#include <vm/vm_phys.h>
#include <vm/vm_dumpset.h>
#include <vm/pmap.h>
#include <machine/dump.h>
#include <machine/elf.h>
#include <machine/md_var.h>
#include <machine/pcb.h>

CTASSERT(sizeof(struct kerneldumpheader) == 512);

#define	MD_ALIGN(x)	roundup2((off_t)(x), PAGE_SIZE)

/* Handle buffered writes. */
static size_t fragsz;

struct dump_pa dump_map[DUMPSYS_MD_PA_NPAIRS];

#if !defined(__powerpc__)
void
dumpsys_gen_pa_init(void)
{
	int n, idx;

bzero(dump_map, sizeof(dump_map));
	for (n = 0; n < nitems(dump_map); n++) {
		idx = n * 2;
		if (dump_avail[idx] == 0 && dump_avail[idx + 1] == 0)
			break;
		dump_map[n].pa_start = dump_avail[idx];
		dump_map[n].pa_size = dump_avail[idx + 1] - dump_avail[idx];
	}
}
#endif

struct dump_pa *
dumpsys_gen_pa_next(struct dump_pa *mdp)
{

if (mdp == NULL)
		return (&dump_map[0]);

mdp++;
	if (mdp->pa_size == 0)
		mdp = NULL;
	return (mdp);
}

void
dumpsys_gen_wbinv_all(void)
{

}

void
dumpsys_gen_unmap_chunk(vm_paddr_t pa __unused, size_t chunk __unused,
    void *va __unused)
{

}

int
dumpsys_gen_write_aux_headers(struct dumperinfo *di)
{

return (0);
}

int
dumpsys_buf_seek(struct dumperinfo *di, size_t sz)
{
	static uint8_t buf[DEV_BSIZE];
	size_t nbytes;
	int error;

bzero(buf, sizeof(buf));

while (sz > 0) {
		nbytes = MIN(sz, sizeof(buf));

error = dump_append(di, buf, 0, nbytes);
		if (error)
			return (error);
		sz -= nbytes;
	}

return (0);
}

int
dumpsys_buf_write(struct dumperinfo *di, char *ptr, size_t sz)
{
	size_t len;
	int error;

while (sz) {
		len = di->blocksize - fragsz;
		if (len > sz)
			len = sz;
		memcpy((char *)di->blockbuf + fragsz, ptr, len);
		fragsz += len;
		ptr += len;
		sz -= len;
		if (fragsz == di->blocksize) {
			error = dump_append(di, di->blockbuf, 0, di->blocksize);
			if (error)
				return (error);
			fragsz = 0;
		}
	}
	return (0);
}

int
dumpsys_buf_flush(struct dumperinfo *di)
{
	int error;

if (fragsz == 0)
		return (0);

error = dump_append(di, di->blockbuf, 0, di->blocksize);
	fragsz = 0;
	return (error);
}

CTASSERT(PAGE_SHIFT < 20);
#define PG2MB(pgs) ((pgs + (1 << (20 - PAGE_SHIFT)) - 1) >> (20 - PAGE_SHIFT))

int
dumpsys_cb_dumpdata(struct dump_pa *mdp, int seqnr, void *arg)
{
	struct dumperinfo *di = (struct dumperinfo*)arg;
	vm_paddr_t pa;
	void *va;
	uint64_t pgs;
	size_t counter, sz, chunk;
	int c, error;
	u_int maxdumppgs;

error = 0;	/* catch case in which chunk size is 0 */
	counter = 0;	/* Update twiddle every 16MB */
	va = NULL;
	pgs = mdp->pa_size / PAGE_SIZE;
	pa = mdp->pa_start;
	maxdumppgs = min(di->maxiosize / PAGE_SIZE, MAXDUMPPGS);
	if (maxdumppgs == 0)	/* seatbelt */
		maxdumppgs = 1;

printf("  chunk %d: %juMB (%ju pages)", seqnr, (uintmax_t)PG2MB(pgs),
	    (uintmax_t)pgs);

dumpsys_wbinv_all();
	while (pgs) {
		chunk = pgs;
		if (chunk > maxdumppgs)
			chunk = maxdumppgs;
		sz = chunk << PAGE_SHIFT;
		counter += sz;
		if (counter >> 24) {
			printf(" %ju", (uintmax_t)PG2MB(pgs));
			counter &= (1 << 24) - 1;
		}

dumpsys_map_chunk(pa, chunk, &va);
		wdog_kern_pat(WD_LASTVAL);

error = dump_append(di, va, 0, sz);
		dumpsys_unmap_chunk(pa, chunk, va);
		if (error)
			break;
		pgs -= chunk;
		pa += sz;

/* Check for user abort. */
		c = cncheckc();
		if (c == 0x03)
			return (ECANCELED);
		if (c != -1)
			printf(" (CTRL-C to abort) ");
	}
	printf(" ... %s\n", (error) ? "fail" : "ok");
	return (error);
}

int
dumpsys_foreach_chunk(dumpsys_callback_t cb, void *arg)
{
	struct dump_pa *mdp;
	int error, seqnr;

seqnr = 0;
	mdp = dumpsys_pa_next(NULL);
	while (mdp != NULL) {
		error = (*cb)(mdp, seqnr++, arg);
		if (error)
			return (-error);
		mdp = dumpsys_pa_next(mdp);
	}
	return (seqnr);
}

static off_t fileofs;

static int
cb_dumphdr(struct dump_pa *mdp, int seqnr, void *arg)
{
	struct dumperinfo *di = (struct dumperinfo*)arg;
	Elf_Phdr phdr;
	uint64_t size;
	int error;

size = mdp->pa_size;
	bzero(&phdr, sizeof(phdr));
	phdr.p_type = PT_LOAD;
	phdr.p_flags = PF_R;			/* XXX */
	phdr.p_offset = fileofs;
#ifdef __powerpc__
	phdr.p_vaddr = (do_minidump? mdp->pa_start : ~0L);
	phdr.p_paddr = (do_minidump? ~0L : mdp->pa_start);
#else
	phdr.p_vaddr = mdp->pa_start;
	phdr.p_paddr = mdp->pa_start;
#endif
	phdr.p_filesz = size;
	phdr.p_memsz = size;
	phdr.p_align = PAGE_SIZE;

error = dumpsys_buf_write(di, (char*)&phdr, sizeof(phdr));
	fileofs += phdr.p_filesz;
	return (error);
}

static int
cb_size(struct dump_pa *mdp, int seqnr, void *arg)
{
	uint64_t *sz;

sz = (uint64_t *)arg;
	*sz += (uint64_t)mdp->pa_size;
	return (0);
}

int
dumpsys_generic(struct dumperinfo *di)
{
	static struct kerneldumpheader kdh;
	Elf_Ehdr ehdr;
	uint64_t dumpsize;
	off_t hdrgap;
	size_t hdrsz;
	int error;

#if MINIDUMP_PAGE_TRACKING == 1
	if (do_minidump)
		return (minidumpsys(di));
#endif

bzero(&ehdr, sizeof(ehdr));
	ehdr.e_ident[EI_MAG0] = ELFMAG0;
	ehdr.e_ident[EI_MAG1] = ELFMAG1;
	ehdr.e_ident[EI_MAG2] = ELFMAG2;
	ehdr.e_ident[EI_MAG3] = ELFMAG3;
	ehdr.e_ident[EI_CLASS] = ELF_CLASS;
#if BYTE_ORDER == LITTLE_ENDIAN
	ehdr.e_ident[EI_DATA] = ELFDATA2LSB;
#else
	ehdr.e_ident[EI_DATA] = ELFDATA2MSB;
#endif
	ehdr.e_ident[EI_VERSION] = EV_CURRENT;
	ehdr.e_ident[EI_OSABI] = ELFOSABI_STANDALONE;	/* XXX big picture? */
	ehdr.e_type = ET_CORE;
	ehdr.e_machine = EM_VALUE;
	ehdr.e_phoff = sizeof(ehdr);
	ehdr.e_flags = 0;
	ehdr.e_ehsize = sizeof(ehdr);
	ehdr.e_phentsize = sizeof(Elf_Phdr);
	ehdr.e_shentsize = sizeof(Elf_Shdr);

dumpsys_pa_init();

/* Calculate dump size. */
	dumpsize = 0L;
	ehdr.e_phnum = dumpsys_foreach_chunk(cb_size, &dumpsize) +
	    DUMPSYS_NUM_AUX_HDRS;
	hdrsz = ehdr.e_phoff + ehdr.e_phnum * ehdr.e_phentsize;
	fileofs = MD_ALIGN(hdrsz);
	dumpsize += fileofs;
	hdrgap = fileofs - roundup2((off_t)hdrsz, di->blocksize);

dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_ARCH_VERSION,
	    dumpsize);

error = dump_start(di, &kdh);
	if (error != 0)
		goto fail;

printf("Dumping %ju MB (%d chunks)\n", (uintmax_t)dumpsize >> 20,
	    ehdr.e_phnum - DUMPSYS_NUM_AUX_HDRS);

/* Dump ELF header */
	error = dumpsys_buf_write(di, (char*)&ehdr, sizeof(ehdr));
	if (error)
		goto fail;

/* Dump program headers */
	error = dumpsys_foreach_chunk(cb_dumphdr, di);
	if (error < 0)
		goto fail;
	error = dumpsys_write_aux_headers(di);
	if (error < 0)
		goto fail;
	dumpsys_buf_flush(di);

/*
	 * All headers are written using blocked I/O, so we know the
	 * current offset is (still) block aligned. Skip the alignement
	 * in the file to have the segment contents aligned at page
	 * boundary.
	 */
	error = dumpsys_buf_seek(di, (size_t)hdrgap);
	if (error)
		goto fail;

/* Dump memory chunks. */
	error = dumpsys_foreach_chunk(dumpsys_cb_dumpdata, di);
	if (error < 0)
		goto fail;

error = dump_finish(di, &kdh);
	if (error != 0)
		goto fail;

printf("\nDump complete\n");
	return (0);

fail:
	if (error < 0)
		error = -error;

if (error == ECANCELED)
		printf("\nDump aborted\n");
	else if (error == E2BIG || error == ENOSPC)
		printf("\nDump failed. Partition too small.\n");
	else
		printf("\n** DUMP FAILED (ERROR %d) **\n", error);
	return (error);
}

003 File Manager

Editing: kern_dump.c

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