C++ (Cpp) file_addmodule Examples

Example #1

File: load_elf_obj.c Project: dcui/FreeBSD-9.3_kernel

int
__elfN(obj_parse_modmetadata)(struct preloaded_file *fp, elf_file_t ef)
{
	struct mod_metadata md;
#if defined(__i386__) && __ELF_WORD_SIZE == 64
	struct mod_metadata64 md64;
#endif
	struct mod_depend *mdepend;
	struct mod_version mver;
	char *s;
	int error, modcnt, minfolen;
	Elf_Addr v, p, p_stop;

	if (__elfN(obj_lookup_set)(fp, ef, "modmetadata_set", &p, &p_stop,
	    &modcnt) != 0)
		return 0;

	modcnt = 0;
	while (p < p_stop) {
		COPYOUT(p, &v, sizeof(v));
		error = __elfN(obj_reloc_ptr)(fp, ef, p, &v, sizeof(v));
		if (error != 0)
			return (error);
#if defined(__i386__) && __ELF_WORD_SIZE == 64
		COPYOUT(v, &md64, sizeof(md64));
		error = __elfN(obj_reloc_ptr)(fp, ef, v, &md64, sizeof(md64));
		if (error != 0)
			return (error);
		md.md_version = md64.md_version;
		md.md_type = md64.md_type;
		md.md_cval = (const char *)(uintptr_t)md64.md_cval;
		md.md_data = (void *)(uintptr_t)md64.md_data;
#else
		COPYOUT(v, &md, sizeof(md));
		error = __elfN(obj_reloc_ptr)(fp, ef, v, &md, sizeof(md));
		if (error != 0)
			return (error);
#endif
		p += sizeof(Elf_Addr);
		switch(md.md_type) {
		case MDT_DEPEND:
			s = strdupout((vm_offset_t)md.md_cval);
			minfolen = sizeof(*mdepend) + strlen(s) + 1;
			mdepend = malloc(minfolen);
			if (mdepend == NULL)
				return ENOMEM;
			COPYOUT((vm_offset_t)md.md_data, mdepend,
			    sizeof(*mdepend));
			strcpy((char*)(mdepend + 1), s);
			free(s);
			file_addmetadata(fp, MODINFOMD_DEPLIST, minfolen,
			    mdepend);
			free(mdepend);
			break;
		case MDT_VERSION:
			s = strdupout((vm_offset_t)md.md_cval);
			COPYOUT((vm_offset_t)md.md_data, &mver, sizeof(mver));
			file_addmodule(fp, s, mver.mv_version, NULL);
			free(s);
			modcnt++;
			break;
		case MDT_MODULE:
			break;
		default:
			printf("unknown type %d\n", md.md_type);
			break;
		}
	}
	return 0;
}

Example #2

File: load_elf.c Project: alek-p/openzfs

int
__elfN(parse_modmetadata)(struct preloaded_file *fp, elf_file_t ef,
    Elf_Addr p_start, Elf_Addr p_end)
{
    struct mod_metadata md;
#if (defined(__i386__) || defined(__powerpc__)) && __ELF_WORD_SIZE == 64
    struct mod_metadata64 md64;
#elif defined(__amd64__) && __ELF_WORD_SIZE == 32
    struct mod_metadata32 md32;
#endif
    struct mod_depend *mdepend;
    struct mod_version mver;
    char *s;
    int error, modcnt, minfolen;
    Elf_Addr v, p;

    modcnt = 0;
    p = p_start;
    while (p < p_end) {
	COPYOUT(p, &v, sizeof(v));
	error = __elfN(reloc_ptr)(fp, ef, p, &v, sizeof(v));
	if (error == EOPNOTSUPP)
	    v += ef->off;
	else if (error != 0)
	    return (error);
#if (defined(__i386__) || defined(__powerpc__)) && __ELF_WORD_SIZE == 64
	COPYOUT(v, &md64, sizeof(md64));
	error = __elfN(reloc_ptr)(fp, ef, v, &md64, sizeof(md64));
	if (error == EOPNOTSUPP) {
	    md64.md_cval += ef->off;
	    md64.md_data += ef->off;
	} else if (error != 0)
	    return (error);
	md.md_version = md64.md_version;
	md.md_type = md64.md_type;
	md.md_cval = (const char *)(uintptr_t)md64.md_cval;
	md.md_data = (void *)(uintptr_t)md64.md_data;
#elif defined(__amd64__) && __ELF_WORD_SIZE == 32
	COPYOUT(v, &md32, sizeof(md32));
	error = __elfN(reloc_ptr)(fp, ef, v, &md32, sizeof(md32));
	if (error == EOPNOTSUPP) {
	    md32.md_cval += ef->off;
	    md32.md_data += ef->off;
	} else if (error != 0)
	    return (error);
	md.md_version = md32.md_version;
	md.md_type = md32.md_type;
	md.md_cval = (const char *)(uintptr_t)md32.md_cval;
	md.md_data = (void *)(uintptr_t)md32.md_data;
#else
	COPYOUT(v, &md, sizeof(md));
	error = __elfN(reloc_ptr)(fp, ef, v, &md, sizeof(md));
	if (error == EOPNOTSUPP) {
	    md.md_cval += ef->off;
	    md.md_data = (void *)((uintptr_t)md.md_data + (uintptr_t)ef->off);
	} else if (error != 0)
	    return (error);
#endif
	p += sizeof(Elf_Addr);
	switch(md.md_type) {
	  case MDT_DEPEND:
	    if (ef->kernel)		/* kernel must not depend on anything */
	      break;
	    s = strdupout((vm_offset_t)md.md_cval);
	    minfolen = sizeof(*mdepend) + strlen(s) + 1;
	    mdepend = malloc(minfolen);
	    if (mdepend == NULL)
		return ENOMEM;
	    COPYOUT((vm_offset_t)md.md_data, mdepend, sizeof(*mdepend));
	    strcpy((char*)(mdepend + 1), s);
	    free(s);
	    file_addmetadata(fp, MODINFOMD_DEPLIST, minfolen, mdepend);
	    free(mdepend);
	    break;
	  case MDT_VERSION:
	    s = strdupout((vm_offset_t)md.md_cval);
	    COPYOUT((vm_offset_t)md.md_data, &mver, sizeof(mver));
	    file_addmodule(fp, s, mver.mv_version, NULL);
	    free(s);
	    modcnt++;
	    break;
	}
    }
    if (modcnt == 0) {
	s = fake_modname(fp->f_name);
	file_addmodule(fp, s, 1, NULL);
	free(s);
    }
    return 0;
}