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From d9b748869a8f4018ebee302aae8246bf29f60309 Mon Sep 17 00:00:00 2001
From: "Timur I. Bakeyev" <timur@iXsystems.com>
Date: Fri, 1 Jun 2018 01:35:08 +0800
Subject: [PATCH 1/2] vfs_fruit: allow broken AFP_Signature where the first
byte is 0
FreeBSD bug ... caused the first byte of the AFP_AfpInfo xattr to be 0
instead of 'A'. This hack allows such broken AFP_AfpInfo blobs to be
parsed by afpinfo_unpack().
FreeBSD Bug: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228462
Signed-off-by: Ralph Boehme <slow@samba.org>
--- source3/modules/vfs_fruit.c.orig 2019-05-07 08:38:21 UTC
+++ source3/modules/vfs_fruit.c
@@ -2350,6 +2350,8 @@ static ssize_t afpinfo_pack(const AfpInf
return AFP_INFO_SIZE;
}
+#define BROKEN_FREEBSD_AFP_Signature 0x00465000
+
/**
* Unpack a buffer into a AfpInfo structure
*
@@ -2369,10 +2371,20 @@ static AfpInfo *afpinfo_unpack(TALLOC_CT
memcpy(ai->afpi_FinderInfo, (const char *)data + 16,
sizeof(ai->afpi_FinderInfo));
- if (ai->afpi_Signature != AFP_Signature
- || ai->afpi_Version != AFP_Version) {
- DEBUG(1, ("Bad AfpInfo signature or version\n"));
+ if (ai->afpi_Signature != AFP_Signature) {
+ DBG_WARNING("Bad AFP signature [%x]\n", ai->afpi_Signature);
+
+ if (ai->afpi_Signature != BROKEN_FREEBSD_AFP_Signature) {
+ DBG_ERR("Bad AfpInfo signature\n");
+ TALLOC_FREE(ai);
+ return NULL;
+ }
+ }
+
+ if (ai->afpi_Version != AFP_Version) {
+ DBG_ERR("Bad AfpInfo version\n");
TALLOC_FREE(ai);
+ return NULL;
}
return ai;
@@ -4242,9 +4254,20 @@ static ssize_t fruit_pread_meta_stream(v
{
ssize_t nread;
int ret;
+ char *p = (char *)data;
nread = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
- if (nread == -1 || nread == n) {
+
+ if (nread == -1) {
+ return -1;
+ }
+
+ if (nread == n) {
+ if (offset == 0 && nread > 3 && p[0] == 0 && p[1] == 'F' && p[2] == 'P') {
+ DBG_NOTICE("Fixing AFP_Info of [%s]\n",
+ fsp_str_dbg(fsp));
+ p[0] = 'A';
+ }
return nread;
}
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