Exemple #1
0
static int
membadd(const char *name, ctf_id_t type, ulong_t offset, void *arg)
{
	ctf_bundle_t *ctb = arg;
	ctf_dmdef_t *dmd;
	char *s = NULL;

	if ((dmd = ctf_alloc(sizeof (ctf_dmdef_t))) == NULL)
		return (ctf_set_errno(ctb->ctb_file, EAGAIN));

	if (name != NULL && (s = ctf_strdup(name)) == NULL) {
		ctf_free(dmd, sizeof (ctf_dmdef_t));
		return (ctf_set_errno(ctb->ctb_file, EAGAIN));
	}

	/*
	 * For now, dmd_type is copied as the src_fp's type; it is reset to an
	 * equivalent dst_fp type by a final loop in ctf_add_type(), below.
	 */
	dmd->dmd_name = s;
	dmd->dmd_type = type;
	dmd->dmd_offset = offset;
	dmd->dmd_value = -1;

	ctf_list_append(&ctb->ctb_dtd->dtd_u.dtu_members, dmd);

	if (s != NULL)
		ctb->ctb_file->ctf_dtstrlen += strlen(s) + 1;

	ctb->ctb_file->ctf_flags |= LCTF_DIRTY;
	return (0);
}
Exemple #2
0
/*
 * Set the parent name.  It is an error to call this routine without calling
 * ctf_import() at some point.
 */
void
ctf_parent_name_set(ctf_file_t *fp, const char *name)
{
	if(fp->ctf_dynparname != NULL)
		ctf_free(fp->ctf_dynparname, strlen(fp->ctf_dynparname) + 1);

	fp->ctf_dynparname = ctf_strdup(name);
	fp->ctf_parname = fp->ctf_dynparname;
}
Exemple #3
0
int
ctf_add_enumerator(ctf_file_t *fp, ctf_id_t enid, const char *name, int value)
{
	ctf_dtdef_t *dtd = ctf_dtd_lookup(fp, enid);
	ctf_dmdef_t *dmd;

	uint_t kind, vlen, root;
	char *s;

	if (name == NULL)
		return (ctf_set_errno(fp, EINVAL));

	if (!(fp->ctf_flags & LCTF_RDWR))
		return (ctf_set_errno(fp, ECTF_RDONLY));

	if (dtd == NULL)
		return (ctf_set_errno(fp, ECTF_BADID));

	kind = CTF_INFO_KIND(dtd->dtd_data.ctt_info);
	root = CTF_INFO_ISROOT(dtd->dtd_data.ctt_info);
	vlen = CTF_INFO_VLEN(dtd->dtd_data.ctt_info);

	if (kind != CTF_K_ENUM)
		return (ctf_set_errno(fp, ECTF_NOTENUM));

	if (vlen == CTF_MAX_VLEN)
		return (ctf_set_errno(fp, ECTF_DTFULL));

	for (dmd = ctf_list_next(&dtd->dtd_u.dtu_members);
	    dmd != NULL; dmd = ctf_list_next(dmd)) {
		if (strcmp(dmd->dmd_name, name) == 0)
			return (ctf_set_errno(fp, ECTF_DUPMEMBER));
	}

	if ((dmd = ctf_alloc(sizeof (ctf_dmdef_t))) == NULL)
		return (ctf_set_errno(fp, EAGAIN));

	if ((s = ctf_strdup(name)) == NULL) {
		ctf_free(dmd, sizeof (ctf_dmdef_t));
		return (ctf_set_errno(fp, EAGAIN));
	}

	dmd->dmd_name = s;
	dmd->dmd_type = CTF_ERR;
	dmd->dmd_offset = 0;
	dmd->dmd_value = value;

	dtd->dtd_data.ctt_info = CTF_TYPE_INFO(kind, root, vlen + 1);
	ctf_list_append(&dtd->dtd_u.dtu_members, dmd);

	fp->ctf_dtstrlen += strlen(s) + 1;
	fp->ctf_flags |= LCTF_DIRTY;

	return (0);
}
Exemple #4
0
static ctf_id_t
ctf_add_generic(ctf_file_t *fp, uint_t flag, const char *name, ctf_dtdef_t **rp)
{
	ctf_dtdef_t *dtd;
	ctf_id_t type;
	char *s = NULL;

	if (flag != CTF_ADD_NONROOT && flag != CTF_ADD_ROOT)
		return (ctf_set_errno(fp, EINVAL));

	if (!(fp->ctf_flags & LCTF_RDWR))
		return (ctf_set_errno(fp, ECTF_RDONLY));

	if (CTF_INDEX_TO_TYPE(fp->ctf_dtnextid, 1) > CTF_MAX_TYPE)
		return (ctf_set_errno(fp, ECTF_FULL));

	if ((dtd = ctf_alloc(sizeof (ctf_dtdef_t))) == NULL)
		return (ctf_set_errno(fp, EAGAIN));

	if (name != NULL && (s = ctf_strdup(name)) == NULL) {
		ctf_free(dtd, sizeof (ctf_dtdef_t));
		return (ctf_set_errno(fp, EAGAIN));
	}

	type = fp->ctf_dtnextid++;
	type = CTF_INDEX_TO_TYPE(type, (fp->ctf_flags & LCTF_CHILD));

	bzero(dtd, sizeof (ctf_dtdef_t));
	dtd->dtd_name = s;
	dtd->dtd_type = type;

	if (s != NULL)
		fp->ctf_dtstrlen += strlen(s) + 1;

	ctf_dtd_insert(fp, dtd);
	fp->ctf_flags |= LCTF_DIRTY;

	*rp = dtd;
	return (type);
}
/*
 * Decode the specified CTF buffer and optional symbol table and create a new
 * CTF container representing the symbolic debugging information.  This code
 * can be used directly by the debugger, or it can be used as the engine for
 * ctf_fdopen() or ctf_open(), below.
 */
ctf_file_t *
ctf_bufopen(const ctf_sect_t *ctfsect, const ctf_sect_t *symsect,
    const ctf_sect_t *strsect, int *errp)
{
	const ctf_preamble_t *pp;
	ctf_header_t hp;
	ctf_file_t *fp;
	void *buf, *base;
	size_t size, hdrsz;
	int err;

	if (ctfsect == NULL || ((symsect == NULL) != (strsect == NULL)))
		return (ctf_set_open_errno(errp, EINVAL));

	if (symsect != NULL && symsect->cts_entsize != sizeof (struct nlist) &&
	    symsect->cts_entsize != sizeof (struct nlist_64))
		return (ctf_set_open_errno(errp, ECTF_SYMTAB));

	if (symsect != NULL && symsect->cts_data == NULL)
		return (ctf_set_open_errno(errp, ECTF_SYMBAD));

	if (strsect != NULL && strsect->cts_data == NULL)
		return (ctf_set_open_errno(errp, ECTF_STRBAD));

	if (ctfsect->cts_size < sizeof (ctf_preamble_t))
		return (ctf_set_open_errno(errp, ECTF_NOCTFBUF));

	pp = (const ctf_preamble_t *)ctfsect->cts_data;

	ctf_dprintf("ctf_bufopen: magic=0x%x version=%u\n",
	    pp->ctp_magic, pp->ctp_version);

	/*
	 * Validate each part of the CTF header (either V1 or V2).
	 * First, we validate the preamble (common to all versions).  At that
	 * point, we know specific header version, and can validate the
	 * version-specific parts including section offsets and alignments.
	 */
	if (pp->ctp_magic != CTF_MAGIC)
		return (ctf_set_open_errno(errp, ECTF_NOCTFBUF));

	if (pp->ctp_version == CTF_VERSION_2) {
		if (ctfsect->cts_size < sizeof (ctf_header_t))
			return (ctf_set_open_errno(errp, ECTF_NOCTFBUF));

		bcopy(ctfsect->cts_data, &hp, sizeof (hp));
		hdrsz = sizeof (ctf_header_t);

	} else if (pp->ctp_version == CTF_VERSION_1) {
		const ctf_header_v1_t *h1p =
		    (const ctf_header_v1_t *)ctfsect->cts_data;

		if (ctfsect->cts_size < sizeof (ctf_header_v1_t))
			return (ctf_set_open_errno(errp, ECTF_NOCTFBUF));

		bzero(&hp, sizeof (hp));
		hp.cth_preamble = h1p->cth_preamble;
		hp.cth_objtoff = h1p->cth_objtoff;
		hp.cth_funcoff = h1p->cth_funcoff;
		hp.cth_typeoff = h1p->cth_typeoff;
		hp.cth_stroff = h1p->cth_stroff;
		hp.cth_strlen = h1p->cth_strlen;

		hdrsz = sizeof (ctf_header_v1_t);
	} else
		return (ctf_set_open_errno(errp, ECTF_CTFVERS));

	size = hp.cth_stroff + hp.cth_strlen;

	ctf_dprintf("ctf_bufopen: uncompressed size=%lu\n", (ulong_t)size);

	if (hp.cth_lbloff > size || hp.cth_objtoff > size ||
	    hp.cth_funcoff > size || hp.cth_typeoff > size ||
	    hp.cth_stroff > size)
		return (ctf_set_open_errno(errp, ECTF_CORRUPT));

	if (hp.cth_lbloff > hp.cth_objtoff ||
	    hp.cth_objtoff > hp.cth_funcoff ||
	    hp.cth_funcoff > hp.cth_typeoff ||
	    hp.cth_typeoff > hp.cth_stroff)
		return (ctf_set_open_errno(errp, ECTF_CORRUPT));

	if ((hp.cth_lbloff & 3) || (hp.cth_objtoff & 1) ||
	    (hp.cth_funcoff & 1) || (hp.cth_typeoff & 3))
		return (ctf_set_open_errno(errp, ECTF_CORRUPT));

	/*
	 * Once everything is determined to be valid, attempt to decompress
	 * the CTF data buffer if it is compressed.  Otherwise we just put
	 * the data section's buffer pointer into ctf_buf, below.
	 */
	if (hp.cth_flags & CTF_F_COMPRESS) {
		size_t srclen, dstlen;
		const void *src;
		int rc = Z_OK;

		if (ctf_zopen(errp) == NULL)
			return (NULL); /* errp is set for us */

		if ((base = ctf_data_alloc(size + hdrsz)) == MAP_FAILED)
			return (ctf_set_open_errno(errp, ECTF_ZALLOC));

		bcopy(ctfsect->cts_data, base, hdrsz);
		((ctf_preamble_t *)base)->ctp_flags &= ~CTF_F_COMPRESS;
		buf = (uchar_t *)base + hdrsz;

		src = (uchar_t *)ctfsect->cts_data + hdrsz;
		srclen = ctfsect->cts_size - hdrsz;
		dstlen = size;

		if ((rc = z_uncompress(buf, &dstlen, src, srclen)) != Z_OK) {
			ctf_dprintf("zlib inflate err: %s\n", z_strerror(rc));
			ctf_data_free(base, size + hdrsz);
			return (ctf_set_open_errno(errp, ECTF_DECOMPRESS));
		}

		if (dstlen != size) {
			ctf_dprintf("zlib inflate short -- got %lu of %lu "
			    "bytes\n", (ulong_t)dstlen, (ulong_t)size);
			ctf_data_free(base, size + hdrsz);
			return (ctf_set_open_errno(errp, ECTF_CORRUPT));
		}

		ctf_data_protect(base, size + hdrsz);

	} else {
		base = (void *)ctfsect->cts_data;
		buf = (uchar_t *)base + hdrsz;
	}

	/*
	 * Once we have uncompressed and validated the CTF data buffer, we can
	 * proceed with allocating a ctf_file_t and initializing it.
	 */
	if ((fp = ctf_alloc(sizeof (ctf_file_t))) == NULL)
		return (ctf_set_open_errno(errp, EAGAIN));

	bzero(fp, sizeof (ctf_file_t));
	fp->ctf_version = hp.cth_version;
	fp->ctf_fileops = &ctf_fileops[hp.cth_version];
	bcopy(ctfsect, &fp->ctf_data, sizeof (ctf_sect_t));

	if (symsect != NULL) {
		bcopy(symsect, &fp->ctf_symtab, sizeof (ctf_sect_t));
		bcopy(strsect, &fp->ctf_strtab, sizeof (ctf_sect_t));
	}

	if (fp->ctf_data.cts_name != NULL)
		fp->ctf_data.cts_name = ctf_strdup(fp->ctf_data.cts_name);
	if (fp->ctf_symtab.cts_name != NULL)
		fp->ctf_symtab.cts_name = ctf_strdup(fp->ctf_symtab.cts_name);
	if (fp->ctf_strtab.cts_name != NULL)
		fp->ctf_strtab.cts_name = ctf_strdup(fp->ctf_strtab.cts_name);

	if (fp->ctf_data.cts_name == NULL)
		fp->ctf_data.cts_name = _CTF_NULLSTR;
	if (fp->ctf_symtab.cts_name == NULL)
		fp->ctf_symtab.cts_name = _CTF_NULLSTR;
	if (fp->ctf_strtab.cts_name == NULL)
		fp->ctf_strtab.cts_name = _CTF_NULLSTR;

	fp->ctf_str[CTF_STRTAB_0].cts_strs = (const char *)buf + hp.cth_stroff;
	fp->ctf_str[CTF_STRTAB_0].cts_len = hp.cth_strlen;

	if (strsect != NULL) {
		fp->ctf_str[CTF_STRTAB_1].cts_strs = strsect->cts_data;
		fp->ctf_str[CTF_STRTAB_1].cts_len = strsect->cts_size;
	}

	fp->ctf_base = base;
	fp->ctf_buf = buf;
	fp->ctf_size = size + hdrsz;

	/*
	 * If we have a parent container name and label, store the relocated
	 * string pointers in the CTF container for easy access later.
	 */
	if (hp.cth_parlabel != 0)
		fp->ctf_parlabel = ctf_strptr(fp, hp.cth_parlabel);
	if (hp.cth_parname != 0)
		fp->ctf_parname = ctf_strptr(fp, hp.cth_parname);

	ctf_dprintf("ctf_bufopen: parent name %s (label %s)\n",
	    fp->ctf_parname ? fp->ctf_parname : "<NULL>",
	    fp->ctf_parlabel ? fp->ctf_parlabel : "<NULL>");

	/*
	 * If we have a symbol table section, allocate and initialize
	 * the symtab translation table, pointed to by ctf_sxlate.
	 */
	if (symsect != NULL) {
		fp->ctf_nsyms = symsect->cts_size / symsect->cts_entsize;
		fp->ctf_sxlate = ctf_alloc(fp->ctf_nsyms * sizeof (uint_t));

		if (fp->ctf_sxlate == NULL) {
			(void) ctf_set_open_errno(errp, EAGAIN);
			goto bad;
		}

		if ((err = init_symtab(fp, &hp, symsect, strsect)) != 0) {
			(void) ctf_set_open_errno(errp, err);
			goto bad;
		}
	}

	if ((err = init_types(fp, &hp)) != 0) {
		(void) ctf_set_open_errno(errp, err);
		goto bad;
	}

	/*
	 * Initialize the ctf_lookup_by_name top-level dictionary.  We keep an
	 * array of type name prefixes and the corresponding ctf_hash to use.
	 * NOTE: This code must be kept in sync with the code in ctf_update().
	 */
	fp->ctf_lookups[0].ctl_prefix = "struct";
	fp->ctf_lookups[0].ctl_len = strlen(fp->ctf_lookups[0].ctl_prefix);
	fp->ctf_lookups[0].ctl_hash = &fp->ctf_structs;
	fp->ctf_lookups[1].ctl_prefix = "union";
	fp->ctf_lookups[1].ctl_len = strlen(fp->ctf_lookups[1].ctl_prefix);
	fp->ctf_lookups[1].ctl_hash = &fp->ctf_unions;
	fp->ctf_lookups[2].ctl_prefix = "enum";
	fp->ctf_lookups[2].ctl_len = strlen(fp->ctf_lookups[2].ctl_prefix);
	fp->ctf_lookups[2].ctl_hash = &fp->ctf_enums;
	fp->ctf_lookups[3].ctl_prefix = _CTF_NULLSTR;
	fp->ctf_lookups[3].ctl_len = strlen(fp->ctf_lookups[3].ctl_prefix);
	fp->ctf_lookups[3].ctl_hash = &fp->ctf_names;
	fp->ctf_lookups[4].ctl_prefix = NULL;
	fp->ctf_lookups[4].ctl_len = 0;
	fp->ctf_lookups[4].ctl_hash = NULL;

	if (symsect != NULL) {
		if (symsect->cts_entsize == sizeof (struct nlist_64))
			(void) ctf_setmodel(fp, CTF_MODEL_LP64);
		else if (symsect->cts_entsize == sizeof (struct nlist))
			(void) ctf_setmodel(fp, CTF_MODEL_ILP32);
		else if (symsect->cts_entsize == sizeof (Elf64_Sym))
			(void) ctf_setmodel(fp, CTF_MODEL_LP64);
		else
			(void) ctf_setmodel(fp, CTF_MODEL_ILP32);
	} else
		(void) ctf_setmodel(fp, CTF_MODEL_NATIVE);

	fp->ctf_refcnt = 1;
	return (fp);

bad:
	ctf_close(fp);
	return (NULL);
}
Exemple #6
0
int
ctf_add_member(ctf_file_t *fp, ctf_id_t souid, const char *name, ctf_id_t type)
{
	ctf_dtdef_t *dtd = ctf_dtd_lookup(fp, souid);
	ctf_dmdef_t *dmd;

	ssize_t msize, malign, ssize;
	uint_t kind, vlen, root;
	char *s = NULL;

	if (!(fp->ctf_flags & LCTF_RDWR))
		return (ctf_set_errno(fp, ECTF_RDONLY));

	if (dtd == NULL)
		return (ctf_set_errno(fp, ECTF_BADID));

	kind = CTF_INFO_KIND(dtd->dtd_data.ctt_info);
	root = CTF_INFO_ISROOT(dtd->dtd_data.ctt_info);
	vlen = CTF_INFO_VLEN(dtd->dtd_data.ctt_info);

	if (kind != CTF_K_STRUCT && kind != CTF_K_UNION)
		return (ctf_set_errno(fp, ECTF_NOTSOU));

	if (vlen == CTF_MAX_VLEN)
		return (ctf_set_errno(fp, ECTF_DTFULL));

	if (name != NULL) {
		for (dmd = ctf_list_next(&dtd->dtd_u.dtu_members);
		    dmd != NULL; dmd = ctf_list_next(dmd)) {
			if (dmd->dmd_name != NULL &&
			    strcmp(dmd->dmd_name, name) == 0)
				return (ctf_set_errno(fp, ECTF_DUPMEMBER));
		}
	}

	if ((msize = ctf_type_size(fp, type)) == CTF_ERR ||
	    (malign = ctf_type_align(fp, type)) == CTF_ERR)
		return (CTF_ERR); /* errno is set for us */

	if ((dmd = ctf_alloc(sizeof (ctf_dmdef_t))) == NULL)
		return (ctf_set_errno(fp, EAGAIN));

	if (name != NULL && (s = ctf_strdup(name)) == NULL) {
		ctf_free(dmd, sizeof (ctf_dmdef_t));
		return (ctf_set_errno(fp, EAGAIN));
	}

	dmd->dmd_name = s;
	dmd->dmd_type = type;
	dmd->dmd_value = -1;

	if (kind == CTF_K_STRUCT && vlen != 0) {
		ctf_dmdef_t *lmd = ctf_list_prev(&dtd->dtd_u.dtu_members);
		ctf_id_t ltype = ctf_type_resolve(fp, lmd->dmd_type);
		size_t off = lmd->dmd_offset;

		ctf_encoding_t linfo;
		ssize_t lsize;

		if (ctf_type_encoding(fp, ltype, &linfo) != CTF_ERR)
			off += linfo.cte_bits;
		else if ((lsize = ctf_type_size(fp, ltype)) != CTF_ERR)
			off += lsize * NBBY;

		/*
		 * Round up the offset of the end of the last member to the
		 * next byte boundary, convert 'off' to bytes, and then round
		 * it up again to the next multiple of the alignment required
		 * by the new member.  Finally, convert back to bits and store
		 * the result in dmd_offset.  Technically we could do more
		 * efficient packing if the new member is a bit-field, but
		 * we're the "compiler" and ANSI says we can do as we choose.
		 */
		off = roundup(off, NBBY) / NBBY;
		off = roundup(off, MAX(malign, 1));
		dmd->dmd_offset = off * NBBY;
		ssize = off + msize;
	} else {
		dmd->dmd_offset = 0;
		ssize = ctf_get_ctt_size(fp, &dtd->dtd_data, NULL, NULL);
		ssize = MAX(ssize, msize);
	}

	if (ssize > CTF_MAX_SIZE) {
		dtd->dtd_data.ctt_size = CTF_LSIZE_SENT;
		dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI(ssize);
		dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO(ssize);
	} else
		dtd->dtd_data.ctt_size = (ushort_t)ssize;

	dtd->dtd_data.ctt_info = CTF_TYPE_INFO(kind, root, vlen + 1);
	ctf_list_append(&dtd->dtd_u.dtu_members, dmd);

	if (s != NULL)
		fp->ctf_dtstrlen += strlen(s) + 1;

	ctf_ref_inc(fp, type);
	fp->ctf_flags |= LCTF_DIRTY;
	return (0);
}