C++ (Cpp) copy_from_oldmem Examples

Example #1

File: crash_dump.c Project: romanbb/android_kernel_lge_d851

static void *get_vmcoreinfo_old(unsigned long *size)
{
	char nt_name[11], *vmcoreinfo;
	Elf64_Nhdr note;
	void *addr;

	if (copy_from_oldmem(&addr, &S390_lowcore.vmcore_info, sizeof(addr)))
		return NULL;
	memset(nt_name, 0, sizeof(nt_name));
	if (copy_from_oldmem(&note, addr, sizeof(note)))
		return NULL;
	if (copy_from_oldmem(nt_name, addr + sizeof(note), sizeof(nt_name) - 1))
		return NULL;
	if (strcmp(nt_name, "VMCOREINFO") != 0)
		return NULL;
	vmcoreinfo = kzalloc_panic(note.n_descsz);
	if (copy_from_oldmem(vmcoreinfo, addr + 24, note.n_descsz))
		return NULL;
	*size = note.n_descsz;
	return vmcoreinfo;
}

Example #2

File: crash_dump.c Project: 08opt/linux

/*
 * Initialize vmcoreinfo note (new kernel)
 */
static void *nt_vmcoreinfo(void *ptr)
{
	char nt_name[11], *vmcoreinfo;
	Elf64_Nhdr note;
	void *addr;

	if (copy_from_oldmem(&addr, &S390_lowcore.vmcore_info, sizeof(addr)))
		return ptr;
	memset(nt_name, 0, sizeof(nt_name));
	if (copy_from_oldmem(&note, addr, sizeof(note)))
		return ptr;
	if (copy_from_oldmem(nt_name, addr + sizeof(note), sizeof(nt_name) - 1))
		return ptr;
	if (strcmp(nt_name, "VMCOREINFO") != 0)
		return ptr;
	vmcoreinfo = kzalloc_panic(note.n_descsz + 1);
	if (copy_from_oldmem(vmcoreinfo, addr + 24, note.n_descsz))
		return ptr;
	vmcoreinfo[note.n_descsz + 1] = 0;
	return nt_init(ptr, 0, vmcoreinfo, note.n_descsz, "VMCOREINFO");
}