static kdump_status
do_noarch_note(kdump_ctx *ctx, Elf32_Word type,
const char *name, size_t namesz, void *desc, size_t descsz)
{
if (note_equal("VMCOREINFO", name, namesz))
return set_vmcoreinfo(ctx, GKI_linux_vmcoreinfo_raw,
desc, descsz, "VMCOREINFO");
else if (note_equal("VMCOREINFO_XEN", name, namesz))
return set_vmcoreinfo(ctx, GKI_xen_vmcoreinfo_raw,
desc, descsz, "VMCOREINFO_XEN");
return kdump_ok;
}
static int
get_pt_note_info(void)
{
int n_type, size_name, size_desc;
off_t offset, offset_desc;
char buf[VMCOREINFO_XEN_NOTE_NAME_BYTES];
char note[MAX_SIZE_NHDR];
nr_cpus = 0;
offset = offset_pt_note_memory;
while (offset < offset_pt_note_memory + size_pt_note_memory) {
if (lseek(fd_memory, offset, SEEK_SET) < 0) {
ERRMSG("Can't seek the dump memory(%s). %s\n",
name_memory, strerror(errno));
return FALSE;
}
if (read(fd_memory, note, sizeof(note)) != sizeof(note)) {
ERRMSG("Can't read the dump memory(%s). %s\n",
name_memory, strerror(errno));
return FALSE;
}
n_type = note_type(note);
size_name = note_namesz(note);
size_desc = note_descsz(note);
offset_desc = offset + offset_note_desc(note);
if (!size_name || size_name >= sizeof(buf))
goto next_note;
if (read(fd_memory, &buf, sizeof(buf)) != sizeof(buf)) {
ERRMSG("Can't read the dump memory(%s). %s\n",
name_memory, strerror(errno));
return FALSE;
}
if (!strncmp(KEXEC_CORE_NOTE_NAME, buf,
KEXEC_CORE_NOTE_NAME_BYTES)) {
if (n_type == NT_PRSTATUS) {
nr_cpus++;
}
} else if (!strncmp(VMCOREINFO_NOTE_NAME, buf,
VMCOREINFO_NOTE_NAME_BYTES)) {
if (n_type == 0) {
set_vmcoreinfo(offset_desc, size_desc);
}
/*
* Check whether /proc/vmcore contains vmcoreinfo,
* and get both the offset and the size.
*/
} else if (!strncmp(VMCOREINFO_XEN_NOTE_NAME, buf,
VMCOREINFO_XEN_NOTE_NAME_BYTES)) {
if (n_type == 0) {
offset_vmcoreinfo_xen = offset_desc;
size_vmcoreinfo_xen = size_desc;
}
/*
* Check whether /proc/vmcore contains xen's note.
*/
} else if (!strncmp("Xen", buf, 4)) {
if (n_type == XEN_ELFNOTE_CRASH_INFO) {
flags_memory |= MEMORY_XEN;
offset_xen_crash_info = offset_desc;
size_xen_crash_info = size_desc;
}
/*
* Check whether a source dumpfile contains eraseinfo.
* /proc/vmcore does not contain eraseinfo, because eraseinfo
* is added only by makedumpfile and makedumpfile does not
* create /proc/vmcore.
*/
} else if (!strncmp(ERASEINFO_NOTE_NAME, buf,
ERASEINFO_NOTE_NAME_BYTES)) {
if (n_type == 0) {
set_eraseinfo(offset_desc, size_desc);
}
}
next_note:
offset += offset_next_note(note);
}
if (is_xen_memory())
DEBUG_MSG("Xen kdump\n");
else
DEBUG_MSG("Linux kdump\n");
return TRUE;
}
