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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: kern_ctf.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2008 John Birrell <jb@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.
 *
 * $FreeBSD$
 */

/*
 * Note this file is included by both link_elf.c and link_elf_obj.c.
 *
 * The CTF header structure definition can't be used here because it's
 * (annoyingly) covered by the CDDL. We will just use a few bytes from
 * it as an integer array where we 'know' what they mean.
 */
#define CTF_HDR_SIZE		36
#define CTF_HDR_STRTAB_U32	7
#define CTF_HDR_STRLEN_U32	8

#ifdef DDB_CTF
#include <contrib/zlib/zlib.h>
#endif

static int
link_elf_ctf_get(linker_file_t lf, linker_ctf_t *lc)
{
#ifdef DDB_CTF
	Elf_Ehdr *hdr = NULL;
	Elf_Shdr *shdr = NULL;
	caddr_t ctftab = NULL;
	caddr_t raw = NULL;
	caddr_t shstrtab = NULL;
	elf_file_t ef = (elf_file_t) lf;
	int flags;
	int i;
	int nbytes;
	size_t sz;
	struct nameidata nd;
	struct thread *td = curthread;
	uint8_t ctf_hdr[CTF_HDR_SIZE];
#endif
	int error = 0;

if (lf == NULL || lc == NULL)
		return (EINVAL);

/* Set the defaults for no CTF present. That's not a crime! */
	bzero(lc, sizeof(*lc));

#ifdef DDB_CTF
	/*
	 * First check if we've tried to load CTF data previously and the
	 * CTF ELF section wasn't found. We flag that condition by setting
	 * ctfcnt to -1. See below.
	 */
	if (ef->ctfcnt < 0)
		return (EFTYPE);

/* Now check if we've already loaded the CTF data.. */
	if (ef->ctfcnt > 0) {
		/* We only need to load once. */
		lc->ctftab = ef->ctftab;
		lc->ctfcnt = ef->ctfcnt;
		lc->symtab = ef->ddbsymtab;
		lc->strtab = ef->ddbstrtab;
		lc->strcnt = ef->ddbstrcnt;
		lc->nsym   = ef->ddbsymcnt;
		lc->ctfoffp = (uint32_t **) &ef->ctfoff;
		lc->typoffp = (uint32_t **) &ef->typoff;
		lc->typlenp = &ef->typlen;
		return (0);
	}

/*
	 * We need to try reading the CTF data. Flag no CTF data present
	 * by default and if we actually succeed in reading it, we'll
	 * update ctfcnt to the number of bytes read.
	 */
	ef->ctfcnt = -1;

NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, lf->pathname, td);
	flags = FREAD;
	error = vn_open(&nd, &flags, 0, NULL);
	if (error)
		return (error);
	NDFREE(&nd, NDF_ONLY_PNBUF);

/* Allocate memory for the FLF header. */
	hdr = malloc(sizeof(*hdr), M_LINKER, M_WAITOK);

/* Read the ELF header. */
	if ((error = vn_rdwr(UIO_READ, nd.ni_vp, hdr, sizeof(*hdr),
	    0, UIO_SYSSPACE, IO_NODELOCKED, td->td_ucred, NOCRED, NULL,
	    td)) != 0)
		goto out;

/* Sanity check. */
	if (!IS_ELF(*hdr)) {
		error = ENOEXEC;
		goto out;
	}

nbytes = hdr->e_shnum * hdr->e_shentsize;
	if (nbytes == 0 || hdr->e_shoff == 0 ||
	    hdr->e_shentsize != sizeof(Elf_Shdr)) {
		error = ENOEXEC;
		goto out;
	}

/* Allocate memory for all the section headers */
	shdr = malloc(nbytes, M_LINKER, M_WAITOK);

/* Read all the section headers */
	if ((error = vn_rdwr(UIO_READ, nd.ni_vp, (caddr_t)shdr, nbytes,
	    hdr->e_shoff, UIO_SYSSPACE, IO_NODELOCKED, td->td_ucred, NOCRED,
	    NULL, td)) != 0)
		goto out;

/*
	 * We need to search for the CTF section by name, so if the
	 * section names aren't present, then we can't locate the
	 * .SUNW_ctf section containing the CTF data.
	 */
	if (hdr->e_shstrndx == 0 || shdr[hdr->e_shstrndx].sh_type != SHT_STRTAB) {
		printf("%s(%d): module %s e_shstrndx is %d, sh_type is %d\n",
		    __func__, __LINE__, lf->pathname, hdr->e_shstrndx,
		    shdr[hdr->e_shstrndx].sh_type);
		error = EFTYPE;
		goto out;
	}

/* Allocate memory to buffer the section header strings. */
	shstrtab = malloc(shdr[hdr->e_shstrndx].sh_size, M_LINKER, M_WAITOK);

/* Read the section header strings. */
	if ((error = vn_rdwr(UIO_READ, nd.ni_vp, shstrtab,
	    shdr[hdr->e_shstrndx].sh_size, shdr[hdr->e_shstrndx].sh_offset,
	    UIO_SYSSPACE, IO_NODELOCKED, td->td_ucred, NOCRED, NULL, td)) != 0)
		goto out;

/* Search for the section containing the CTF data. */
	for (i = 0; i < hdr->e_shnum; i++)
		if (strcmp(".SUNW_ctf", shstrtab + shdr[i].sh_name) == 0)
			break;

/* Check if the CTF section wasn't found. */
	if (i >= hdr->e_shnum) {
		printf("%s(%d): module %s has no .SUNW_ctf section\n",
		    __func__, __LINE__, lf->pathname);
		error = EFTYPE;
		goto out;
	}

/* Read the CTF header. */
	if ((error = vn_rdwr(UIO_READ, nd.ni_vp, ctf_hdr, sizeof(ctf_hdr),
	    shdr[i].sh_offset, UIO_SYSSPACE, IO_NODELOCKED, td->td_ucred,
	    NOCRED, NULL, td)) != 0)
		goto out;

/* Check the CTF magic number. */
#ifdef __LITTLE_ENDIAN__
	if (ctf_hdr[0] != 0xf1 || ctf_hdr[1] != 0xcf) {
#else
	if (ctf_hdr[0] != 0xcf || ctf_hdr[1] != 0xf1) {
#endif
		printf("%s(%d): module %s has invalid format\n",
		    __func__, __LINE__, lf->pathname);
		error = EFTYPE;
		goto out;
	}

/* Check if version 2. */
	if (ctf_hdr[2] != 2) {
		printf("%s(%d): module %s CTF format version is %d "
		    "(2 expected)\n",
		    __func__, __LINE__, lf->pathname, ctf_hdr[2]);
		error = EFTYPE;
		goto out;
	}

/* Check if the data is compressed. */
	if ((ctf_hdr[3] & 0x1) != 0) {
		uint32_t *u32 = (uint32_t *) ctf_hdr;

/*
		 * The last two fields in the CTF header are the offset
		 * from the end of the header to the start of the string
		 * data and the length of that string data. se this
		 * information to determine the decompressed CTF data
		 * buffer required.
		 */
		sz = u32[CTF_HDR_STRTAB_U32] + u32[CTF_HDR_STRLEN_U32] +
		    sizeof(ctf_hdr);

/*
		 * Allocate memory for the compressed CTF data, including
		 * the header (which isn't compressed).
		 */
		raw = malloc(shdr[i].sh_size, M_LINKER, M_WAITOK);
	} else {
		/*
		 * The CTF data is not compressed, so the ELF section
		 * size is the same as the buffer size required.
		 */
		sz = shdr[i].sh_size;
	}

/*
	 * Allocate memory to buffer the CTF data in its decompressed
	 * form.
	 */
	ctftab = malloc(sz, M_LINKER, M_WAITOK);

/*
	 * Read the CTF data into the raw buffer if compressed, or
	 * directly into the CTF buffer otherwise.
	 */
	if ((error = vn_rdwr(UIO_READ, nd.ni_vp, raw == NULL ? ctftab : raw,
	    shdr[i].sh_size, shdr[i].sh_offset, UIO_SYSSPACE, IO_NODELOCKED,
	    td->td_ucred, NOCRED, NULL, td)) != 0)
		goto out;

/* Check if decompression is required. */
	if (raw != NULL) {
		z_stream zs;
		int ret;

/*
		 * The header isn't compressed, so copy that into the
		 * CTF buffer first.
		 */
		bcopy(ctf_hdr, ctftab, sizeof(ctf_hdr));

/* Initialise the zlib structure. */
		bzero(&zs, sizeof(zs));

if (inflateInit(&zs) != Z_OK) {
			error = EIO;
			goto out;
		}

zs.avail_in = shdr[i].sh_size - sizeof(ctf_hdr);
		zs.next_in = ((uint8_t *) raw) + sizeof(ctf_hdr);
		zs.avail_out = sz - sizeof(ctf_hdr);
		zs.next_out = ((uint8_t *) ctftab) + sizeof(ctf_hdr);
		ret = inflate(&zs, Z_FINISH);
		inflateEnd(&zs);
		if (ret != Z_STREAM_END) {
			printf("%s(%d): zlib inflate returned %d\n", __func__, __LINE__, ret);
			error = EIO;
			goto out;
		}
	}

/* Got the CTF data! */
	ef->ctftab = ctftab;
	ef->ctfcnt = shdr[i].sh_size;

/* We'll retain the memory allocated for the CTF data. */
	ctftab = NULL;

/* Let the caller use the CTF data read. */
	lc->ctftab = ef->ctftab;
	lc->ctfcnt = ef->ctfcnt;
	lc->symtab = ef->ddbsymtab;
	lc->strtab = ef->ddbstrtab;
	lc->strcnt = ef->ddbstrcnt;
	lc->nsym   = ef->ddbsymcnt;
	lc->ctfoffp = (uint32_t **) &ef->ctfoff;
	lc->typoffp = (uint32_t **) &ef->typoff;
	lc->typlenp = &ef->typlen;

out:
	VOP_UNLOCK(nd.ni_vp);
	vn_close(nd.ni_vp, FREAD, td->td_ucred, td);

if (hdr != NULL)
		free(hdr, M_LINKER);
	if (shdr != NULL)
		free(shdr, M_LINKER);
	if (shstrtab != NULL)
		free(shstrtab, M_LINKER);
	if (ctftab != NULL)
		free(ctftab, M_LINKER);
	if (raw != NULL)
		free(raw, M_LINKER);
#else
	error = EOPNOTSUPP;
#endif

return (error);
}

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Editing: kern_ctf.c

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