X-Git-Url: https://git.brokenzipper.com/gitweb?a=blobdiff_plain;f=src%2Flist.c;h=bba430ad8531ed73ec15f8b707fa861e3de97321;hb=2947023d277cb0a787c73721d6190a75444cd65f;hp=98c1e396b3547cb22a5ac590bb24d03b03a9b521;hpb=b4ec8aedf9c8948bee9bf1635132a7da7a522611;p=chaz%2Ftar

diff --git a/src/list.c b/src/list.c
index 98c1e39..bba430a 100644
--- a/src/list.c
+++ b/src/list.c
@@ -141,8 +141,9 @@ read_and (void (*do_something) (void))
 	      status = read_header (false);
 	      if (status == HEADER_ZERO_BLOCK)
 		break;
-	      WARN ((0, 0, _("A lone zero block at %s"),
-		     STRINGIFY_BIGINT (current_block_ordinal (), buf)));
+	      WARNOPT (WARN_ALONE_ZERO_BLOCK,
+		       (0, 0, _("A lone zero block at %s"),
+			STRINGIFY_BIGINT (current_block_ordinal (), buf)));
 	      break;
 	    }
 	  status = prev_status;
@@ -530,7 +531,9 @@ decode_header (union block *header, struct tar_stat_info *stat_info,
 	       enum archive_format *format_pointer, int do_user_group)
 {
   enum archive_format format;
-
+  unsigned hbits; /* high bits of the file mode. */
+  mode_t mode = MODE_FROM_HEADER (header->header.mode, &hbits);
+  
   if (strcmp (header->header.magic, TMAGIC) == 0)
     {
       if (header->star_header.prefix[130] == 0
@@ -545,12 +548,12 @@ decode_header (union block *header, struct tar_stat_info *stat_info,
 	format = USTAR_FORMAT;
     }
   else if (strcmp (header->header.magic, OLDGNU_MAGIC) == 0)
-    format = OLDGNU_FORMAT;
+    format = hbits ? OLDGNU_FORMAT : GNU_FORMAT;
   else
     format = V7_FORMAT;
   *format_pointer = format;
 
-  stat_info->stat.st_mode = MODE_FROM_HEADER (header->header.mode);
+  stat_info->stat.st_mode = mode;
   stat_info->mtime.tv_sec = TIME_FROM_HEADER (header->header.mtime);
   stat_info->mtime.tv_nsec = 0;
   assign_string (&stat_info->uname,
@@ -884,25 +887,28 @@ minor_from_header (const char *p, size_t s)
 		      (uintmax_t) TYPE_MAXIMUM (minor_t), false, false);
 }
 
+/* Convert P to the file mode, as understood by tar.
+   Store unrecognized mode bits (from 10th up) in HBITS. */
 mode_t
-mode_from_header (const char *p, size_t s)
+mode_from_header (const char *p, size_t s, unsigned *hbits)
 {
-  /* Do not complain about unrecognized mode bits.  */
   unsigned u = from_header (p, s, "mode_t",
 			    - (uintmax_t) TYPE_MINIMUM (mode_t),
 			    TYPE_MAXIMUM (uintmax_t), false, false);
-  return ((u & TSUID ? S_ISUID : 0)
-	  | (u & TSGID ? S_ISGID : 0)
-	  | (u & TSVTX ? S_ISVTX : 0)
-	  | (u & TUREAD ? S_IRUSR : 0)
-	  | (u & TUWRITE ? S_IWUSR : 0)
-	  | (u & TUEXEC ? S_IXUSR : 0)
-	  | (u & TGREAD ? S_IRGRP : 0)
-	  | (u & TGWRITE ? S_IWGRP : 0)
-	  | (u & TGEXEC ? S_IXGRP : 0)
-	  | (u & TOREAD ? S_IROTH : 0)
-	  | (u & TOWRITE ? S_IWOTH : 0)
-	  | (u & TOEXEC ? S_IXOTH : 0));
+  mode_t mode = ((u & TSUID ? S_ISUID : 0)
+		 | (u & TSGID ? S_ISGID : 0)
+		 | (u & TSVTX ? S_ISVTX : 0)
+		 | (u & TUREAD ? S_IRUSR : 0)
+		 | (u & TUWRITE ? S_IWUSR : 0)
+		 | (u & TUEXEC ? S_IXUSR : 0)
+		 | (u & TGREAD ? S_IRGRP : 0)
+		 | (u & TGWRITE ? S_IWGRP : 0)
+		 | (u & TGEXEC ? S_IXGRP : 0)
+		 | (u & TOREAD ? S_IROTH : 0)
+		 | (u & TOWRITE ? S_IWOTH : 0)
+		 | (u & TOEXEC ? S_IXOTH : 0));
+  *hbits = mode ^ u;
+  return mode;
 }
 
 off_t