/* Parse a dump header, including its tagged attributes, and call the
* dump-header callback, if one is defined.
*/
static afs_uint32
parse_dumphdr(XFILE * X, unsigned char *tag, tagged_field * field,
afs_uint32 value, tag_parse_info * pi, void *g_refcon,
void *l_refcon)
{
dump_parser *p = (dump_parser *) g_refcon;
afs_dump_header hdr;
dt_uint64 where;
afs_uint32 r;
memset(&hdr, 0, sizeof(hdr));
if ((r = xftell(X, &where)))
return r;
sub64_32(hdr.offset, where, 1);
if ((r = ReadInt32(X, &hdr.magic)))
return r;
if ((r = ReadInt32(X, &hdr.version)))
return r;
if (hdr.magic != DUMPBEGINMAGIC) {
if (p->cb_error)
(p->cb_error) (DSERR_MAGIC, 1, p->err_refcon,
"Invalid magic number (0x%08x) in dump header",
hdr.magic);
return DSERR_MAGIC;
}
if (hdr.version != DUMPVERSION) {
if (p->cb_error)
(p->cb_error) (DSERR_MAGIC, 1, p->err_refcon,
"Unknown dump format version (%d) in dump header",
hdr.version);
return DSERR_MAGIC;
}
if (p->print_flags & DSPRINT_DUMPHDR)
printf("%s [%s = 0x%s]\n", field->label,
decimate_int64(&hdr.offset, 0), hexify_int64(&hdr.offset, 0));
if (p->print_flags & DSPRINT_DUMPHDR) {
printf(" Magic number: 0x%08x\n", hdr.magic);
printf(" Version: %d\n", hdr.version);
}
r = ParseTaggedData(X, dumphdr_fields, tag, pi, g_refcon, (void *)&hdr);
if (!r && p->cb_dumphdr) {
r = xftell(X, &where);
if (!r)
r = (p->cb_dumphdr) (&hdr, X, p->refcon);
if (p->flags & DSFLAG_SEEK) {
if (!r)
r = xfseek(X, &where);
else
xfseek(X, &where);
}
}
if (hdr.field_mask & F_DUMPHDR_VOLNAME)
free(hdr.volname);
return r;
}
afs_uint32
ParseDumpFile(XFILE * X, dump_parser * p)
{
tag_parse_info pi;
unsigned char tag;
afs_uint32 r;
prep_pi(p, &pi);
r = ParseTaggedData(X, top_fields, &tag, &pi, (void *)p, 0);
return handle_return(r, X, tag, p);
}
/* Parse a volume header, including any tagged attributes, and call the
* volume-header callback, if one is defined.
*/
afs_uint32
parse_volhdr(XFILE * X, unsigned char *tag, tagged_field * field,
afs_uint32 value, tag_parse_info * pi, void *g_refcon,
void *l_refcon)
{
dump_parser *p = (dump_parser *) g_refcon;
afs_vol_header hdr;
u_int64 where;
afs_uint32 r;
memset(&hdr, 0, sizeof(hdr));
if (r = xftell(X, &where))
return r;
sub64_32(hdr.offset, where, 1);
if (p->print_flags & DSPRINT_VOLHDR)
printf("%s [%s = 0x%s]\n", field->label,
decimate_int64(&hdr.offset, 0), hexify_int64(&hdr.offset, 0));
r = ParseTaggedData(X, volhdr_fields, tag, pi, g_refcon, (void *)&hdr);
if (!r && p->cb_volhdr) {
if (r = xftell(X, &where))
return r;
r = (p->cb_volhdr) (&hdr, X, p->refcon);
if (p->flags & DSFLAG_SEEK) {
if (!r)
r = xfseek(X, &where);
else
xfseek(X, &where);
}
}
if (hdr.field_mask & F_VOLHDR_VOLUNIQ)
p->vol_uniquifier = hdr.voluniq;
if (hdr.field_mask & F_VOLHDR_VOLNAME)
free(hdr.volname);
if (hdr.field_mask & F_VOLHDR_OFFLINE_MSG)
free(hdr.offline_msg);
if (hdr.field_mask & F_VOLHDR_MOTD)
free(hdr.motd_msg);
return r;
}
/* Parse a VNode, including any tagged attributes and data, and call the
* appropriate callback, if one is defined.
*/
afs_uint32
parse_vnode(XFILE * X, unsigned char *tag, tagged_field * field,
afs_uint32 value, tag_parse_info * pi, void *g_refcon,
void *l_refcon)
{
dump_parser *p = (dump_parser *) g_refcon;
afs_uint32(*cb) (afs_vnode *, XFILE *, void *);
dt_uint64 where, offset2k;
afs_vnode v;
afs_uint32 r;
if ((r = xftell(X, &where)))
return r;
memset(&v, 0, sizeof(v));
sub64_32(v.offset, where, 1);
if ((r = ReadInt32(X, &v.vnode)))
return r;
if ((r = ReadInt32(X, &v.vuniq)))
return r;
mk64(offset2k, 0, 2048);
if (!LastGoodVNode
|| ((p->flags & DSFLAG_SEEK) && v.vnode == 1
&& lt64(v.offset, offset2k)))
LastGoodVNode = -1;
if (p->print_flags & DSPRINT_ITEM) {
printf("%s %d/%d [%s = 0x%s]\n", field->label, v.vnode, v.vuniq,
decimate_int64(&where, 0), hexify_int64(&where, 0));
}
r = ParseTaggedData(X, vnode_fields, tag, pi, g_refcon, (void *)&v);
/* Try to resync, if requested */
if (!r && (p->repair_flags & DSFIX_VFSYNC)) {
afs_uint32 drop;
dt_uint64 xwhere;
if ((r = xftell(X, &where)))
return r;
sub64_32(xwhere, where, 1);
/* Are we at the start of a valid vnode (or dump end)? */
r = match_next_vnode(X, p, &xwhere, v.vnode);
if (r && r != DSERR_FMT)
return r;
if (r) { /* Nope. */
/* Was _this_ a valid vnode? If so, we can keep it and search for
* the next one. Otherwise, we throw it out, and start the search
* at the starting point of this vnode.
*/
drop = r = match_next_vnode(X, p, &v.offset, LastGoodVNode);
if (r && r != DSERR_FMT)
return r;
if (!r) {
add64_32(where, v.offset, 1);
if ((r = xfseek(X, &v.offset)))
return r;
} else {
if ((r = xfseek(X, &xwhere)))
return r;
}
if ((r = resync_vnode(X, p, &v, 0, 1024)))
return r;
if ((r = ReadByte(X, tag)))
return r;
if (drop) {
if (p->cb_error)
(p->cb_error) (DSERR_FMT, 0, p->err_refcon,
"Dropping vnode %d", v.vnode);
return 0;
}
} else {
if ((r = xfseek(X, &where)))
return r;
}
}
LastGoodVNode = v.vnode;
if (!r) {
if (v.field_mask & F_VNODE_TYPE)
switch (v.type) {
case vFile:
cb = p->cb_vnode_file;
break;
case vDirectory:
cb = p->cb_vnode_dir;
break;
case vSymlink:
cb = p->cb_vnode_link;
break;
default:
cb = p->cb_vnode_wierd;
break;
} else
cb = p->cb_vnode_empty;
if (cb) {
dt_uint64 where;
if ((r = xftell(X, &where)))
return r;
r = (cb) (&v, X, p->refcon);
if (p->flags & DSFLAG_SEEK) {
if (!r)
r = xfseek(X, &where);
else
xfseek(X, &where);
}
}
}
return r;
}