1 // SPDX-License-Identifier: GPL-2.0
3  * s390 code for kexec_file_load system call
31 	const unsigned long marker_len = sizeof(MODULE_SIG_STRING) - 1;  in s390_verify_sig()
41 		return -EKEYREJECTED;  in s390_verify_sig()
43 	if (memcmp(kernel + kernel_len - marker_len, MODULE_SIG_STRING,  in s390_verify_sig()
45 		return -EKEYREJECTED;  in s390_verify_sig()
46 	kernel_len -= marker_len;  in s390_verify_sig()
48 	ms = (void *)kernel + kernel_len - sizeof(*ms);  in s390_verify_sig()
49 	kernel_len -= sizeof(*ms);  in s390_verify_sig()
51 	sig_len = be32_to_cpu(ms->sig_len);  in s390_verify_sig()
53 		return -EKEYREJECTED;  in s390_verify_sig()
54 	kernel_len -= sig_len;  in s390_verify_sig()
56 	if (ms->id_type != PKEY_ID_PKCS7)  in s390_verify_sig()
57 		return -EKEYREJECTED;  in s390_verify_sig()
59 	if (ms->algo != 0 ||  in s390_verify_sig()
60 	    ms->hash != 0 ||  in s390_verify_sig()
61 	    ms->signer_len != 0 ||  in s390_verify_sig()
62 	    ms->key_id_len != 0 ||  in s390_verify_sig()
63 	    ms->__pad[0] != 0 ||  in s390_verify_sig()
64 	    ms->__pad[1] != 0 ||  in s390_verify_sig()
65 	    ms->__pad[2] != 0) {  in s390_verify_sig()
66 		return -EBADMSG;  in s390_verify_sig()
74 	if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING))  in s390_verify_sig()
90 	if (image->type == KEXEC_TYPE_CRASH) {  in kexec_file_update_purgatory()
109 	if (image->type == KEXEC_TYPE_CRASH) {  in kexec_file_update_purgatory()
119 		crash_size = crashk_res.end - crashk_res.start + 1;  in kexec_file_update_purgatory()
137 	data->memsz = ALIGN(data->memsz, PAGE_SIZE);  in kexec_file_add_purgatory()
138 	buf.mem = data->memsz;  in kexec_file_add_purgatory()
140 	if (image->type == KEXEC_TYPE_CRASH)  in kexec_file_add_purgatory()
147 	data->memsz += buf.memsz;  in kexec_file_add_purgatory()
160 	buf.buffer = image->initrd_buf;  in kexec_file_add_initrd()
161 	buf.bufsz = image->initrd_buf_len;  in kexec_file_add_initrd()
163 	data->memsz = ALIGN(data->memsz, PAGE_SIZE);  in kexec_file_add_initrd()
164 	buf.mem = data->memsz;  in kexec_file_add_initrd()
166 	if (image->type == KEXEC_TYPE_CRASH)  in kexec_file_add_initrd()
171 	data->parm->initrd_start = data->memsz;  in kexec_file_add_initrd()
172 	data->parm->initrd_size = buf.memsz;  in kexec_file_add_initrd()
173 	data->memsz += buf.memsz;  in kexec_file_add_initrd()
179 	return ipl_report_add_component(data->report, &buf, 0, 0);  in kexec_file_add_initrd()
194 	data->memsz = ALIGN(data->memsz, PAGE_SIZE);  in kexec_file_add_ipl_report()
195 	buf.mem = data->memsz;  in kexec_file_add_ipl_report()
207 	addr = data->memsz + data->report->size;  in kexec_file_add_ipl_report()
213 		ipl_report_add_certificate(data->report, ptr, addr, len);  in kexec_file_add_ipl_report()
218 	ret = -ENOMEM;  in kexec_file_add_ipl_report()
219 	buf.buffer = ipl_report_finish(data->report);  in kexec_file_add_ipl_report()
222 	buf.bufsz = data->report->size;  in kexec_file_add_ipl_report()
224 	image->arch.ipl_buf = buf.buffer;  in kexec_file_add_ipl_report()
226 	data->memsz += buf.memsz;  in kexec_file_add_ipl_report()
229 		data->kernel_buf + offsetof(struct lowcore, ipl_parmblock_ptr);  in kexec_file_add_ipl_report()
233 	if (image->type == KEXEC_TYPE_CRASH)  in kexec_file_add_ipl_report()
259 	ret = -EINVAL;  in kexec_file_add_components()
261 	if (image->kernel_buf_len < minsize)  in kexec_file_add_components()
264 	if (data.parm->max_command_line_size)  in kexec_file_add_components()
265 		max_command_line_size = data.parm->max_command_line_size;  in kexec_file_add_components()
270 	if (image->kernel_buf_len < minsize + max_command_line_size)  in kexec_file_add_components()
273 	if (image->cmdline_buf_len >= max_command_line_size)  in kexec_file_add_components()
276 	memcpy(data.parm->command_line, image->cmdline_buf,  in kexec_file_add_components()
277 	       image->cmdline_buf_len);  in kexec_file_add_components()
280 	if (image->type == KEXEC_TYPE_CRASH) {  in kexec_file_add_components()
281 		data.parm->oldmem_base = crashk_res.start;  in kexec_file_add_components()
282 		data.parm->oldmem_size = crashk_res.end - crashk_res.start + 1;  in kexec_file_add_components()
286 	if (image->initrd_buf) {  in kexec_file_add_components()
298 		restart_psw += image->start;  in kexec_file_add_components()
300 		image->start = 0;  in kexec_file_add_components()
321 	sechdrs = (void *)pi->ehdr + pi->ehdr->e_shoff;  in arch_kexec_apply_relocations_add()
322 	strtab = (char *)pi->ehdr + sechdrs[symtab->sh_link].sh_offset;  in arch_kexec_apply_relocations_add()
323 	shstrtab = (char *)pi->ehdr + sechdrs[pi->ehdr->e_shstrndx].sh_offset;  in arch_kexec_apply_relocations_add()
325 	relas = (void *)pi->ehdr + relsec->sh_offset;  in arch_kexec_apply_relocations_add()
327 	for (i = 0; i < relsec->sh_size / sizeof(*relas); i++) {  in arch_kexec_apply_relocations_add()
331 		void *loc;		/* tmp location to modify */  in arch_kexec_apply_relocations_add()  local
333 		sym = (void *)pi->ehdr + symtab->sh_offset;  in arch_kexec_apply_relocations_add()
336 		if (sym->st_name)  in arch_kexec_apply_relocations_add()
337 			name = strtab + sym->st_name;  in arch_kexec_apply_relocations_add()
339 			name = shstrtab + sechdrs[sym->st_shndx].sh_name;  in arch_kexec_apply_relocations_add()
341 		if (sym->st_shndx == SHN_UNDEF) {  in arch_kexec_apply_relocations_add()
343 			return -ENOEXEC;  in arch_kexec_apply_relocations_add()
346 		if (sym->st_shndx == SHN_COMMON) {  in arch_kexec_apply_relocations_add()
348 			return -ENOEXEC;  in arch_kexec_apply_relocations_add()
351 		if (sym->st_shndx >= pi->ehdr->e_shnum &&  in arch_kexec_apply_relocations_add()
352 		    sym->st_shndx != SHN_ABS) {  in arch_kexec_apply_relocations_add()
354 			       sym->st_shndx, name);  in arch_kexec_apply_relocations_add()
355 			return -ENOEXEC;  in arch_kexec_apply_relocations_add()
358 		loc = pi->purgatory_buf;  in arch_kexec_apply_relocations_add()
359 		loc += section->sh_offset;  in arch_kexec_apply_relocations_add()
360 		loc += relas[i].r_offset;  in arch_kexec_apply_relocations_add()
362 		val = sym->st_value;  in arch_kexec_apply_relocations_add()
363 		if (sym->st_shndx != SHN_ABS)  in arch_kexec_apply_relocations_add()
364 			val += pi->sechdrs[sym->st_shndx].sh_addr;  in arch_kexec_apply_relocations_add()
367 		addr = section->sh_addr + relas[i].r_offset;  in arch_kexec_apply_relocations_add()
374 		ret = arch_kexec_do_relocs(r_type, loc, val, addr);  in arch_kexec_apply_relocations_add()
377 			return -ENOEXEC;  in arch_kexec_apply_relocations_add()
385 	vfree(image->arch.ipl_buf);  in arch_kimage_file_post_load_cleanup()
386 	image->arch.ipl_buf = NULL;  in arch_kimage_file_post_load_cleanup()