linux-master/kernel/kexec_file.c

108 	vfree(pi->sechdrs);
109 	pi->sechdrs = NULL;
837 	const Elf_Shdr *sechdrs;
843 	sechdrs = (void *)pi->ehdr + pi->ehdr->e_shoff;
848 		if (!(sechdrs[i].sh_flags & SHF_ALLOC))
851 		align = sechdrs[i].sh_addralign;
852 		if (sechdrs[i].sh_type != SHT_NOBITS) {
856 			kbuf->bufsz += sechdrs[i].sh_size;
861 			bss_sz += sechdrs[i].sh_size;
886  * kexec_purgatory_setup_sechdrs - prepares the pi->sechdrs buffer.
901 	Elf_Shdr *sechdrs;
909 	sechdrs = vzalloc(sechdrs_size);
910 	if (!sechdrs)
912 	memcpy(sechdrs, (void *)pi->ehdr + pi->ehdr->e_shoff, sechdrs_size);
913 	pi->sechdrs = sechdrs;
923 		if (!(sechdrs[i].sh_flags & SHF_ALLOC))
926 		align = sechdrs[i].sh_addralign;
927 		if (sechdrs[i].sh_type == SHT_NOBITS) {
929 			sechdrs[i].sh_addr = bss_addr;
930 			bss_addr += sechdrs[i].sh_size;
946 		if (sechdrs[i].sh_flags & SHF_EXECINSTR &&
947 		    pi->ehdr->e_entry >= sechdrs[i].sh_addr &&
948 		    pi->ehdr->e_entry < (sechdrs[i].sh_addr
949 					 + sechdrs[i].sh_size) &&
951 			kbuf->image->start -= sechdrs[i].sh_addr;
955 		src = (void *)pi->ehdr + sechdrs[i].sh_offset;
957 		memcpy(dst, src, sechdrs[i].sh_size);
959 		sechdrs[i].sh_addr = kbuf->mem + offset;
960 		sechdrs[i].sh_offset = offset;
961 		offset += sechdrs[i].sh_size;
971 	const Elf_Shdr *sechdrs;
973 	sechdrs = (void *)pi->ehdr + pi->ehdr->e_shoff;
980 		relsec = sechdrs + i;
996 		section = pi->sechdrs + relsec->sh_info;
997 		symtab = sechdrs + relsec->sh_link;
1032  * Allocates the memory needed for image->purgatory_info.sechdrs and
1062 	vfree(pi->sechdrs);
1063 	pi->sechdrs = NULL;
1080 	const Elf_Shdr *sechdrs;
1090 	sechdrs = (void *)ehdr + ehdr->e_shoff;
1093 		if (sechdrs[i].sh_type != SHT_SYMTAB)
1096 		if (sechdrs[i].sh_link >= ehdr->e_shnum)
1099 		strtab = (void *)ehdr + sechdrs[sechdrs[i].sh_link].sh_offset;
1100 		syms = (void *)ehdr + sechdrs[i].sh_offset;
1103 		for (k = 0; k < sechdrs[i].sh_size/sizeof(Elf_Sym); k++) {
1135 	sechdr = &pi->sechdrs[sym->st_shndx];
1166 	sec = pi->sechdrs + sym->st_shndx;