handle-pkware-verification-bit   [plain text]


From: Steven Schweda
Subject: Handle the PKWare verification bit of internal attributes
Bug-Debian: http://bugs.debian.org/630078
X-Debian-version: 6.0-5

--- a/process.c
+++ b/process.c
@@ -1729,6 +1729,13 @@
     else if (uO.L_flag > 1)   /* let -LL force lower case for all names */
         G.pInfo->lcflag = 1;
 
+    /* Handle the PKWare verification bit, bit 2 (0x0004) of internal
+       attributes.  If this is set, then a verification checksum is in the
+       first 3 bytes of the external attributes.  In this case all we can use
+       for setting file attributes is the last external attributes byte. */
+    if (G.crec.internal_file_attributes & 0x0004)
+      G.crec.external_file_attributes &= (ulg)0xff;
+
     /* do Amigas (AMIGA_) also have volume labels? */
     if (IS_VOLID(G.crec.external_file_attributes) &&
         (G.pInfo->hostnum == FS_FAT_ || G.pInfo->hostnum == FS_HPFS_ ||