Function dumpsys_generic

freebsd/kern/kern_dump.c:283–387

}

int
dumpsys_generic(struct dumperinfo *di)
{
	static struct kerneldumpheader kdh;
	Elf_Ehdr ehdr;
	uint64_t dumpsize;
	off_t hdrgap;
	size_t hdrsz;
	int error;

#if MINIDUMP_PAGE_TRACKING == 1
	if (do_minidump)
		return (minidumpsys(di));
#endif

	bzero(&ehdr, sizeof(ehdr));
	ehdr.e_ident[EI_MAG0] = ELFMAG0;
	ehdr.e_ident[EI_MAG1] = ELFMAG1;
	ehdr.e_ident[EI_MAG2] = ELFMAG2;
	ehdr.e_ident[EI_MAG3] = ELFMAG3;
	ehdr.e_ident[EI_CLASS] = ELF_CLASS;
#if BYTE_ORDER == LITTLE_ENDIAN
	ehdr.e_ident[EI_DATA] = ELFDATA2LSB;
#else
	ehdr.e_ident[EI_DATA] = ELFDATA2MSB;
#endif
	ehdr.e_ident[EI_VERSION] = EV_CURRENT;
	ehdr.e_ident[EI_OSABI] = ELFOSABI_STANDALONE;	/* XXX big picture? */
	ehdr.e_type = ET_CORE;
	ehdr.e_machine = EM_VALUE;
	ehdr.e_phoff = sizeof(ehdr);
	ehdr.e_flags = 0;
	ehdr.e_ehsize = sizeof(ehdr);
	ehdr.e_phentsize = sizeof(Elf_Phdr);
	ehdr.e_shentsize = sizeof(Elf_Shdr);

	dumpsys_pa_init();

	/* Calculate dump size. */
	dumpsize = 0L;
	ehdr.e_phnum = dumpsys_foreach_chunk(cb_size, &dumpsize) +
	    DUMPSYS_NUM_AUX_HDRS;
	hdrsz = ehdr.e_phoff + ehdr.e_phnum * ehdr.e_phentsize;
	fileofs = MD_ALIGN(hdrsz);
	dumpsize += fileofs;
	hdrgap = fileofs - roundup2((off_t)hdrsz, di->blocksize);

	dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_ARCH_VERSION,
	    dumpsize);

	error = dump_start(di, &kdh);
	if (error != 0)
		goto fail;

	printf("Dumping %ju MB (%d chunks)\n", (uintmax_t)dumpsize >> 20,
	    ehdr.e_phnum - DUMPSYS_NUM_AUX_HDRS);

	/* Dump ELF header */