Adding upstream version 2.4.57.upstream/2.4.57upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 598 insertions, 0 deletions

diff --git a/.gdbinit b/.gdbinit
new file mode 100644
index 0000000..8879865
--- /dev/null
+++ b/.gdbinit
@@ -0,0 +1,598 @@
+# gdb macros which may be useful for folks using gdb to debug
+# apache.  Delete it if it bothers you.
+
+define dump_table
+    set $t = (apr_table_entry_t *)((apr_array_header_t *)$arg0)->elts
+    set $n = ((apr_array_header_t *)$arg0)->nelts
+    set $i = 0
+    while $i < $n
+        if $t[$i].val == (void *)0L
+            printf "[%u] '%s'=>NULL\n", $i, $t[$i].key
+        else
+            printf "[%u] '%s'='%s' [%p]\n", $i, $t[$i].key, $t[$i].val, $t[$i].val
+        end
+        set $i = $i + 1
+    end
+end
+document dump_table
+    Print the key/value pairs in a table.
+end
+
+define dump_skiplist
+    set $sl = (apr_skiplist *)$arg0
+    set $m = $sl->bottom
+    printf "skiplist@%p: size=%lu: height=%d\n", $sl, $sl->size, $sl->height
+    while ($m)
+        printf "(%p,%.12lx)", $m, $m->data
+        set $u = $m->up
+        while ($u)
+            printf " (%p,%.12lx)", $u, $u->data
+            set $u = $u->up
+        end
+        printf "\n"
+        set $m = $m->next
+    end
+end
+document dump_skiplist
+    Print the nodes/values in a skiplist
+end
+
+define dump_string_hash
+    set $h = $arg0->array
+    set $n = $arg0->max
+    set $i = 0
+    while $i < $n
+        set $ent = $h[$i]       
+        while $ent != (void *)0L
+            printf "'%s' => '%p'\n", $ent->key, $ent->val
+            set $ent = $ent->next
+        end
+        set $i = $i + 1
+    end
+end
+document dump_string_hash
+    Print the entries in a hash table indexed by strings
+end
+
+define dump_string_shash
+    set $h = $arg0->array
+    set $n = $arg0->max
+    set $i = 0
+    while $i < $n
+        set $ent = $h[$i]       
+        while $ent != (void *)0L
+            printf "'%s' => '%s'\n", $ent->key, $ent->val
+            set $ent = $ent->next
+        end
+        set $i = $i + 1
+    end
+end
+document dump_string_shash
+    Print the entries in a hash table indexed by strings with string values
+end
+
+define ro
+    run -DONE_PROCESS
+end
+
+define dump_string_array
+    set $a = (char **)((apr_array_header_t *)$arg0)->elts
+    set $n = (int)((apr_array_header_t *)$arg0)->nelts
+    set $i = 0
+    while $i < $n
+        printf "[%u] '%s'\n", $i, $a[$i]
+        set $i = $i + 1
+    end
+end
+document dump_string_array
+    Print all of the elements in an array of strings.
+end
+
+define printmemn
+    set $i = 0
+    while $i < $arg1
+        if $arg0[$i] < 0x20 || $arg0[$i] > 0x7e
+            printf "~"
+        else
+            printf "%c", $arg0[$i]
+        end
+        set $i = $i + 1
+    end
+end
+
+define print_bkt_datacol
+    # arg0 == column name
+    # arg1 == format
+    # arg2 == value
+    # arg3 == suppress header?
+    set $suppressheader = $arg3
+
+    if !$suppressheader
+        printf " "
+        printf $arg0
+        printf "="
+    else
+        printf " | "
+    end
+    printf $arg1, $arg2
+end
+
+define dump_bucket_ex
+    # arg0 == bucket
+    # arg1 == suppress header?
+    set $bucket = (struct apr_bucket *)$arg0
+    set $sh = $arg1
+    set $refcount = -1
+
+    print_bkt_datacol "bucket" "%-9s" $bucket->type->name $sh
+    printf "(%12lx)", (unsigned long)$bucket
+    print_bkt_datacol "length" "%-6ld" (long)($bucket->length) $sh
+    print_bkt_datacol "data" "%12lx" $bucket->data $sh
+
+    if !$sh
+        printf "\n    "
+    end
+
+    if (($bucket->type == &apr_bucket_type_eos)   || \
+        ($bucket->type == &apr_bucket_type_flush))
+
+        # metadata buckets, no content
+        print_bkt_datacol "contents" "%c" ' ' $sh
+        printf "                     "
+        print_bkt_datacol "rc" "n/%c" 'a' $sh
+
+    else
+    if ($bucket->type == &ap_bucket_type_error)
+
+        # metadata bucket, no content but it does have an error code in it
+        print_bkt_datacol "contents" "%c" ' ' $sh
+        set $status = ((ap_bucket_error *)$bucket->data)->status
+        printf " (status=%3d)        ", $status
+        print_bkt_datacol "rc" "n/%c" 'a' $sh
+
+    else
+    if ($bucket->type == &apr_bucket_type_file)
+
+        # file bucket, can show fd and refcount
+        set $fd = ((apr_bucket_file*)$bucket->data)->fd->filedes
+        print_bkt_datacol "contents" "[***file***] fd=%-6ld" (long)$fd $sh
+        set $refcount = ((apr_bucket_refcount *)$bucket->data)->refcount
+        print_bkt_datacol "rc" "%-3d" $refcount $sh
+
+    else
+    if (($bucket->type == &apr_bucket_type_heap)      || \
+        ($bucket->type == &apr_bucket_type_pool)      || \
+        ($bucket->type == &apr_bucket_type_mmap)      || \
+        ($bucket->type == &apr_bucket_type_transient) || \
+        ($bucket->type == &apr_bucket_type_immortal))
+
+        # in-memory buckets
+
+        if $bucket->type == &apr_bucket_type_heap
+            set $refcount = ((apr_bucket_refcount *)$bucket->data)->refcount
+            set $p = (apr_bucket_heap *)$bucket->data
+            set $data = $p->base+$bucket->start
+
+        else
+        if $bucket->type == &apr_bucket_type_pool
+            set $refcount = ((apr_bucket_refcount *)$bucket->data)->refcount
+            set $p = (apr_bucket_pool *)$bucket->data
+            if !$p->pool
+                set $p = (apr_bucket_heap *)$bucket->data
+            end
+            set $data = $p->base+$bucket->start
+
+        else
+        if $bucket->type == &apr_bucket_type_mmap
+            # is this safe if not APR_HAS_MMAP?
+            set $refcount = ((apr_bucket_refcount *)$bucket->data)->refcount
+            set $p = (apr_bucket_mmap *)$bucket->data
+            set $data = ((char *)$p->mmap->mm)+$bucket->start
+
+        else
+        if (($bucket->type == &apr_bucket_type_transient) || \
+            ($bucket->type == &apr_bucket_type_immortal))
+            set $data = ((char *)$bucket->data)+$bucket->start
+
+        end
+        end
+        end
+        end
+
+        if $sh
+            printf " | ["
+        else
+            printf " contents=["
+        end
+        set $datalen = $bucket->length
+        if $isValidAddress($data) == 1
+            if $datalen > 17
+                printmem $data 17
+                printf "..."
+                set $datalen = 20
+            else
+                printmemn $data $datalen
+            end
+            printf "]"
+            while $datalen < 20
+                printf " "
+                set $datalen = $datalen + 1
+            end
+        else
+            printf "Iv addr %12lx]", $data
+        end
+
+        if $refcount != -1
+            print_bkt_datacol "rc" "%-3d" $refcount $sh
+        else
+            print_bkt_datacol "rc" "n/%c" 'a' $sh
+        end
+
+    else
+        if ($bucket->type == &apr_bucket_type_pipe)
+
+            # pipe bucket, can show fd
+            set $fd = ((apr_file_t*)$bucket->data)->filedes
+            print_bkt_datacol "contents" "[***pipe***] fd=%-3ld" (long)$fd $sh
+
+        else
+        if ($bucket->type == &apr_bucket_type_socket)
+
+            # file bucket, can show fd
+            set $fd = ((apr_socket_t*)$bucket->data)->socketdes
+            print_bkt_datacol "contents" "[**socket**] fd=%-3ld" (long)$fd $sh
+
+        else
+
+            # 3rd-party bucket type
+            print_bkt_datacol "contents" "[**opaque**]%-7c" ' ' $sh
+        end
+        end
+
+        # no refcount
+        printf "   "
+        print_bkt_datacol "rc" "n/%c" 'a' $sh
+    end
+    end
+    end
+    end
+
+    printf "\n"
+
+end
+
+define dump_bucket
+    dump_bucket_ex $arg0 0
+end
+document dump_bucket
+    Print bucket info
+end
+
+define dump_brigade
+    set $bb = (apr_bucket_brigade *)$arg0
+    set $bucket = $bb->list.next
+    set $sentinel = ((char *)((&($bb->list)) \
+                               - ((size_t) &((struct apr_bucket *)0)->link)))
+    printf "dump of brigade 0x%lx\n", (unsigned long)$bb
+
+    printf "   | type     (address)      | length | "
+    printf "data address | contents               | rc\n"
+    printf "-------------------------------------------"
+    printf "----------------------------------------\n"
+
+    if $bucket == $sentinel
+        printf "brigade is empty\n"
+    end
+
+    set $j = 0
+    set $brigade_length = 0
+    while $bucket != $sentinel
+        printf "%2d", $j
+        dump_bucket_ex $bucket 1
+        set $j = $j + 1
+        if $bucket->length > 0
+            set $brigade_length = $brigade_length + $bucket->length
+        end
+        set $bucket = $bucket->link.next
+    end
+    printf "end of brigade\n"
+    printf "Length of brigade (excluding buckets of unknown length): %u\n", $brigade_length
+end
+document dump_brigade
+    Print bucket brigade info
+end
+
+define dump_filters
+    set $f = $arg0
+    while $f
+        printf "%s(0x%lx): ctx=0x%lx, r=0x%lx, c=0x%lx\n", \
+        $f->frec->name, (unsigned long)$f, (unsigned long)$f->ctx, \
+        $f->r, $f->c
+        set $f = $f->next
+    end
+end
+document dump_filters
+    Print filter chain info
+end
+
+define dump_filter_chain
+    set $r = $arg0
+    set $f = $r->output_filters
+    while $f
+        if $f == $r->output_filters
+            printf "r->output_filters =>\n"
+        end
+        if $f == $r->proto_output_filters
+            printf "r->proto_output_filters =>\n"
+        end
+        if $f == $r->connection->output_filters
+            printf "r->connection->output_filters =>\n"
+        end
+        
+        printf "  %s(0x%lx): type=%d, ctx=0x%lx, r=%s(0x%lx), c=0x%lx\n", \
+          $f->frec->name, (unsigned long)$f, $f->frec->ftype, (unsigned long)$f->ctx, \
+          $f->r == $r ? "r" : ($f->r == 0L ? "null" : \
+          ($f->r == $r->main ? "r->main" :  \
+          ($r->main && $f->r == $r->main->main ? "r->main->main" : "????"))), \
+          $f->r, $f->c
+
+        set $f = $f->next
+    end
+end
+document dump_filter_chain
+    Print filter chain info given a request_rec pointer
+end
+
+define dump_process_rec
+    set $p = $arg0
+    printf "process_rec=0x%lx:\n", (unsigned long)$p
+    printf "   pool=0x%lx, pconf=0x%lx\n", \
+           (unsigned long)$p->pool, (unsigned long)$p->pconf
+end
+document dump_process_rec
+    Print process_rec info
+end
+
+define dump_server_addr_recs
+    set $sa_ = $arg0
+    set $san_ = 0
+    while $sa_
+      ### need to call apr_sockaddr_info_getbuf to print ->host_addr properly
+      ### which is a PITA since we need a buffer :(
+      printf " addr#%d: vhost=%s -> :%d\n", $san_++, $sa_->virthost, $sa_->host_port
+      set $sa_ = $sa_->next
+    end
+end
+document dump_server_addr_recs
+    Print server_addr_rec info
+end
+
+
+define dump_server_rec
+    set $s = $arg0
+    printf "name=%s:%d (0x%lx)\n", \
+            $s->server_hostname, $s->port, $s
+    dump_server_addr_recs $s->addrs
+    dump_process_rec($s->process)
+end
+document dump_server_rec
+    Print server_rec info
+end
+
+define dump_servers
+    set $s = $arg0
+    while $s
+        dump_server_rec($s)
+        printf "\n"
+        set $s = $s->next
+    end
+end
+document dump_servers
+    Print server_rec list info
+end
+
+define dump_request_tree
+    set $r = $arg0
+    set $i
+    while $r
+        printf "r=(0x%lx): uri=%s, handler=%s, r->main=0x%lx\n", \
+          $r, $r->unparsed_uri, $r->handler ? $r->handler : "(none)", $r->main
+        set $r = $r->main
+    end
+end        
+
+define dump_scoreboard
+    # Need to reserve size of array first before string literals could be
+    # put in
+    set $status = {0, 1, 2, 3, 4 ,5 ,6 ,7 ,8 ,9 ,10}
+    set $status = {"DEAD", "STARTING", "READY", "BUSY_READ", "BUSY_WRITE", "BUSY_KEEPALIVE", "BUSY_LOG", "BUSY_DNS", "CLOSING", "GRACEFUL", "IDLE_KILL"}
+    set $i = 0
+    while ($i < server_limit)
+        if ap_scoreboard_image->servers[$i][0].pid != 0
+            set $j = 0
+            while ($j < threads_per_child)
+                set $ws = ap_scoreboard_image->servers[$i][$j]
+                printf "pid: %d, tid: 0x%lx, status: %s\n", $ws.pid, $ws.tid, $status[$ws.status]
+                set $j = $j +1
+            end
+        end
+        set $i = $i +1
+    end
+end
+document dump_scoreboard
+    Dump the scoreboard
+end
+
+define dump_allocator
+    printf "Allocator current_free_index = %d, max_free_index = %d\n", \
+            ($arg0)->current_free_index, ($arg0)->max_free_index
+    printf "Allocator free list:\n"
+    set $i = 0
+    set $max =(sizeof $arg0->free)/(sizeof $arg0->free[0])
+    set $kb = 0
+    while $i < $max
+        set $node = $arg0->free[$i]
+        if $node != 0
+            printf " #%2d: ", $i
+            while $node != 0
+                printf "%d, ", ($node->index + 1) << 12
+                set $kb = $kb + (($node->index + 1) << 2)
+                set $node = $node->next
+            end
+            printf "ends.\n"
+        end
+        set $i = $i + 1
+    end
+    printf "Sum of free blocks: %dkiB\n", $kb
+end
+document dump_allocator
+    Print status of an allocator and its freelists.
+end
+
+define dump_one_pool
+    set $p = $arg0
+    set $size = 0
+    set $free = 0
+    set $nodes = 0
+    set $node = $arg0->active
+    set $done = 0
+    while $done == 0
+        set $size = $size + (($node->index + 1) << 12)
+        set $free = $free + ($node->endp - $node->first_avail)
+        set $nodes = $nodes + 1
+        set $node = $node->next
+        if $node == $arg0->active
+            set $done = 1
+        end
+    end
+    printf "Pool '"
+    if $p->tag
+        printf "%s", $p->tag
+    else
+        printf "no tag"
+    end
+    printf "' [%p]: %d/%d free (%d blocks)\n", $p, $free, $size, $nodes
+end
+
+define dump_all_pools
+    if $argc > 0
+        set $root = $arg0
+    else
+        set $root = ap_pglobal
+    end
+    while $root->parent
+        set $root = $root->parent
+    end
+    dump_pool_and_children $root
+end
+document dump_all_pools
+    Dump the whole pool hierarchy starting from apr_global_pool. Optionally takes an arbitrary pool as starting parameter.
+end
+
+python
+
+from __future__ import print_function
+
+class DumpPoolAndChilds (gdb.Command):
+  """Dump the whole pool hierarchy starting from the given pool."""
+
+  def __init__ (self):
+    super (DumpPoolAndChilds, self).__init__ ("dump_pool_and_children", gdb.COMMAND_USER)
+
+  def _allocator_free_blocks(self, alloc):
+    salloc = "%s" % (alloc)
+    if self.total_free_blocks.get(salloc) != None:
+      return self.total_free_blocks[salloc]
+    i = 0
+    dalloc = alloc.dereference()
+    max =(dalloc['free'].type.sizeof)/(dalloc['free'][0].type.sizeof)
+    kb = 0
+    while i < max:
+      node = dalloc['free'][i]
+      if node != 0:
+        while node != 0:
+          noded = node.dereference()
+          kb = kb + ((int(noded['index']) + 1) << 2)
+          node = noded['next']
+      i = i + 1
+    self.total_free_blocks[salloc] = kb
+    return kb
+
+
+  def _dump_one_pool(self, arg):
+    size = 0
+    free = 0
+    nodes = 0
+    darg = arg.dereference()
+    active = darg['active']
+    node = active
+    done = 0
+    while done == 0:
+      noded = node.dereference()
+      size = size + ((int(noded['index']) + 1) << 12)
+      free = free + (noded['endp'] - noded['first_avail'])
+      nodes = nodes + 1
+      node = noded['next']
+      if node == active:
+        done = 1
+    if darg['tag'] != 0:
+      tag = darg['tag'].string()
+    else:
+      tag = "No tag"
+    print("Pool '%s' [%s]: %d/%d free (%d blocks) allocator: %s free blocks in allocator: %i kiB" % (tag, arg, free, size, nodes, darg['allocator'], self._allocator_free_blocks(darg['allocator'])))
+    self.free = self.free + free
+    self.size = self.size + size
+    self.nodes = self.nodes + nodes
+
+  def _dump(self, arg, depth):
+    pool = arg
+    while pool:
+        print("%*c" % (depth * 4 + 1, " "), end="")
+        self._dump_one_pool(pool)
+        if pool['child'] != 0:
+            self._dump(pool['child'], depth + 1)
+        pool = pool['sibling']
+
+  def invoke (self, arg, from_tty):
+    pool = gdb.parse_and_eval(arg)
+    self.free = 0
+    self.size = 0
+    self.nodes = 0
+    self.total_free_blocks = {}
+    self._dump(pool, 0)
+    print("Total %d/%d free (%d blocks)" % (self.free, self.size, self.nodes))
+    sum = 0
+    for key in self.total_free_blocks:
+      sum = sum + self.total_free_blocks[key]
+    print("Total free allocator blocks: %i kiB" % (sum))
+
+DumpPoolAndChilds ()
+end
+document dump_pool_and_children
+    Dump the whole pool hierarchy starting from the given pool.
+end
+
+python
+
+class isValidAddress (gdb.Function):
+    """Determines if the argument is a valid address."""
+
+    def __init__(self):
+        super(isValidAddress, self).__init__("isValidAddress")
+
+    def invoke(self, address):
+        inf = gdb.inferiors()[0]
+        result = 1
+        try:
+            inf.read_memory(address, 8)
+        except:
+            result = 0
+        return result
+
+isValidAddress()
+
+end
+
+# Set sane defaults for common signals:
+handle SIGPIPE noprint pass nostop
+handle SIGUSR1 print pass nostop