Fix Solaris bug where chmod fails if we don't have PRIV_SYS_LINKDIR

[chaz/tar] / src / tar.c

diff --git a/src/tar.c b/src/tar.c
index 24279c72f788f4c2d81e652dbf22f2d7b9f191b8..31537eb23fad6121f810ff80aa3b4ed25b4ccb5c 100644 (file)
--- a/src/tar.c
+++ b/src/tar.c
@@ -1,7 +1,7 @@
 /* A tar (tape archiver) program.
 
    Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000,
-   2001, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+   2001, 2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
 
    Written by John Gilmore, starting 1985-08-25.
 
@@ -50,6 +50,7 @@
 #include <version-etc.h>
 #include <xstrtol.h>
 #include <stdopen.h>
+#include <priv-set.h>
 
 /* Local declarations.  */
 
@@ -271,6 +272,8 @@ enum
   IGNORE_FAILED_READ_OPTION,
   INDEX_FILE_OPTION,
   KEEP_NEWER_FILES_OPTION,
+  LZMA_OPTION,
+  LZOP_OPTION,
   MODE_OPTION,
   MTIME_OPTION,
   NEWER_MTIME_OPTION,
@@ -322,7 +325,6 @@ enum
   TRANSFORM_OPTION,
   UNQUOTE_OPTION,
   USAGE_OPTION,
-  USE_COMPRESS_PROGRAM_OPTION,
   UTC_OPTION,
   VERSION_OPTION,
   VOLNO_FILE_OPTION,
@@ -351,7 +353,7 @@ The version control may be set with --backup or VERSION_CONTROL, values are:\n\n
 
 /* NOTE:
 
-   Available option letters are DEIQY and eqy. Consider the following
+   Available option letters are DEQY and eqy. Consider the following
    assignments:
 
    [For Solaris tar compatibility =/= Is it important at all?]
@@ -359,7 +361,6 @@ The version control may be set with --backup or VERSION_CONTROL, values are:\n\n
    E  use extended headers (--format=posix)
 
    [q  alias for --occurrence=1 =/= this would better be used for quiet?]
-   [I  same as T =/= will harm star compatibility]
 
    y  per-file gzip compression
    Y  per-block gzip compression */
@@ -594,7 +595,7 @@ static struct argp_option options[] = {
   {"auto-compress", 'a', 0, 0,
    N_("use archive suffix to determine the compression program"), GRID+1 },
   {"no-auto-compress", NO_AUTO_COMPRESS_OPTION, 0, 0,
-   N_("do not use use archive suffix to determine the compression program"),
+   N_("do not use archive suffix to determine the compression program"),
    GRID+1 },
   {"bzip2", 'j', 0, 0,
    N_("filter the archive through bzip2"), GRID+1 },
@@ -605,9 +606,13 @@ static struct argp_option options[] = {
   {"compress", 'Z', 0, 0,
    N_("filter the archive through compress"), GRID+1 },
   {"uncompress", 0, 0, OPTION_ALIAS, NULL, GRID+1 },
-  {"lzma", 'J', 0, 0,
+  {"lzma", LZMA_OPTION, 0, 0,
    N_("filter the archive through lzma"), GRID+1 },
-  {"use-compress-program", USE_COMPRESS_PROGRAM_OPTION, N_("PROG"), 0,
+  {"lzop", LZOP_OPTION, 0, 0,
+   N_("filter the archive through lzop"), GRID+8 },
+  {"xz", 'J', 0, 0,
+   N_("filter the archive through xz"), GRID+8 },
+  {"use-compress-program", 'I', N_("PROG"), 0,
    N_("filter through PROG (must accept -d)"), GRID+1 },
 #undef GRID
   
@@ -683,6 +688,7 @@ static struct argp_option options[] = {
    GRID+1 },
   {"transform", TRANSFORM_OPTION, N_("EXPRESSION"), 0,
    N_("use sed replace EXPRESSION to transform file names"), GRID+1 },
+  {"xform", 0, 0, OPTION_ALIAS, NULL, GRID+1 },
 #undef GRID
 
 #define GRID 120
@@ -1360,18 +1366,12 @@ parse_opt (int key, char *arg, struct argp_state *state)
       ignore_zeros_option = true;
       break;
 
-    case 'I':
-      USAGE_ERROR ((0, 0,
-                   _("Warning: the -I option is not supported;"
-                     " perhaps you meant -j or -T?")));
-      break;
-
     case 'j':
       set_use_compress_program_option ("bzip2");
       break;
 
     case 'J':
-      set_use_compress_program_option ("lzma");
+      set_use_compress_program_option ("xz");
       break;
       
     case 'k':
@@ -1405,6 +1405,14 @@ parse_opt (int key, char *arg, struct argp_state *state)
       }
       break;
 
+    case LZMA_OPTION:
+      set_use_compress_program_option ("lzma");
+      break;
+      
+    case LZOP_OPTION:
+      set_use_compress_program_option ("lzop");
+      break;
+      
     case 'm':
       touch_option = true;
       break;
@@ -1812,6 +1820,8 @@ parse_opt (int key, char *arg, struct argp_state *state)
       /* FIXME: What it is good for? */
       same_permissions_option = true;
       same_order_option = true;
+      WARN ((0, 0, _("The --preserve option is deprecated, "
+                    "use --preserve-permissions --preserve-order instead")));
       break;
 
     case RECORD_SIZE_OPTION:
@@ -1895,7 +1905,7 @@ parse_opt (int key, char *arg, struct argp_state *state)
       set_transform_expr (arg);
       break;
 
-    case USE_COMPRESS_PROGRAM_OPTION:
+    case 'I':
       set_use_compress_program_option (arg);
       break;
 
@@ -2338,6 +2348,10 @@ decode_options (int argc, char **argv)
 
   if (tape_length_option && tape_length_option < record_size)
     USAGE_ERROR ((0, 0, _("Volume length cannot be less than record size")));
+
+  if (same_order_option && listed_incremental_option)
+    USAGE_ERROR ((0, 0, _("--preserve-order is not compatible with "
+                         "--listed-incremental")));
   
   /* Forbid using -c with no input files whatsoever.  Check that `-f -',
      explicit or implied, is used correctly.  */
@@ -2441,11 +2455,14 @@ main (int argc, char **argv)
 
   obstack_init (&argv_stk);
 
-#ifdef SIGCHLD
+  /* Ensure default behavior for some signals */
+  signal (SIGPIPE, SIG_DFL);
   /* System V fork+wait does not work if SIGCHLD is ignored.  */
   signal (SIGCHLD, SIG_DFL);
-#endif
 
+  /* Try to disable the ability to unlink a directory.  */
+  priv_set_remove_linkdir ();
+  
   /* Decode options.  */
 
   decode_options (argc, argv);