Update copyright years.

[chaz/tar] / src / misc.c

diff --git a/src/misc.c b/src/misc.c
index 0424ea7cc2f9a582805a99e6463ce042cf68d626..e92c8aa830e36fe2fca6cd25aeaf9f107d7b6bac 100644 (file)
--- a/src/misc.c
+++ b/src/misc.c
@@ -1,7 +1,7 @@
 /* Miscellaneous functions, not really specific to GNU tar.
 
    Copyright 1988, 1992, 1994-1997, 1999-2001, 2003-2007, 2009-2010,
-   2012-2013 Free Software Foundation, Inc.
+   2012-2014 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
@@ -29,6 +29,8 @@
 # define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
 #endif
 
+static const char *tar_getcdpath (int);
+
 \f
 /* Handling strings.  */
 
@@ -230,7 +232,7 @@ zap_slashes (char *name)
 
 /* Normalize FILE_NAME by removing redundant slashes and "."
    components, including redundant trailing slashes.
-   Leave ".." alone, as it may be significant in the presence 
+   Leave ".." alone, as it may be significant in the presence
    of symlinks and on platforms where "/.." != "/".
 
    Destructive version: modifies its argument. */
@@ -290,7 +292,9 @@ normalize_filename (int cdidx, const char *name)
       const char *cdpath = tar_getcdpath (cdidx);
       size_t copylen;
       bool need_separator;
-      
+
+      if (!cdpath)
+       call_arg_fatal ("getcwd", ".");
       copylen = strlen (cdpath);
       need_separator = ! (DOUBLE_SLASH_IS_DISTINCT_ROOT
                          && copylen == 2 && ISSLASH (cdpath[1]));
@@ -834,10 +838,11 @@ struct wd
 {
   /* The directory's name.  */
   char const *name;
-  /* "absolute" path representing this directory; in the contrast to
+  /* "Absolute" path representing this directory; in the contrast to
      the real absolute pathname, it can contain /../ components (see
-     normalize_filename_x for the reason of it). */
-  char *abspath; 
+     normalize_filename_x for the reason of it).  It is NULL if the
+     absolute path could not be determined.  */
+  char *abspath;
   /* If nonzero, the file descriptor of the directory, or AT_FDCWD if
      the working directory.  If zero, the directory needs to be opened
      to be used.  */
@@ -879,15 +884,13 @@ chdir_count (void)
 int
 chdir_arg (char const *dir)
 {
+  char *absdir;
+
   if (wd_count == wd_alloc)
     {
       if (wd_alloc == 0)
-       {
-         wd_alloc = 2;
-         wd = xmalloc (sizeof *wd * wd_alloc);
-       }
-      else
-       wd = x2nrealloc (wd, &wd_alloc, sizeof *wd);
+       wd_alloc = 2;
+      wd = x2nrealloc (wd, &wd_alloc, sizeof *wd);
 
       if (! wd_count)
        {
@@ -909,18 +912,22 @@ chdir_arg (char const *dir)
        return wd_count - 1;
     }
 
-  wd[wd_count].name = dir;
-  /* if the given name is an absolute path, then use that path
-     to represent this working directory; otherwise, construct
-     a path based on the previous -C option's absolute path */
-  if (IS_ABSOLUTE_FILE_NAME (wd[wd_count].name))
-    wd[wd_count].abspath = xstrdup (wd[wd_count].name);
-  else
+
+  /* If the given name is absolute, use it to represent this directory;
+     otherwise, construct a name based on the previous -C option.  */
+  if (IS_ABSOLUTE_FILE_NAME (dir))
+    absdir = xstrdup (dir);
+  else if (wd[wd_count - 1].abspath)
     {
       namebuf_t nbuf = namebuf_create (wd[wd_count - 1].abspath);
-      namebuf_add_dir (nbuf, wd[wd_count].name);
-      wd[wd_count].abspath = namebuf_finish (nbuf);
+      namebuf_add_dir (nbuf, dir);
+      absdir = namebuf_finish (nbuf);
     }
+  else
+    absdir = 0;
+
+  wd[wd_count].name = dir;
+  wd[wd_count].abspath = absdir;
   wd[wd_count].fd = 0;
   return wd_count++;
 }
@@ -1007,7 +1014,7 @@ tar_dirname (void)
    chdir_args() has never been called, so we simply return the
    process's actual cwd.  (Note that in this case IDX is ignored,
    since it should always be 0.) */
-const char *
+static const char *
 tar_getcdpath (int idx)
 {
   if (!wd)
@@ -1206,7 +1213,7 @@ char *
 namebuf_finish (namebuf_t buf)
 {
   char *res = buf->buffer;
-  
+
   if (ISSLASH (buf->buffer[buf->dir_length - 1]))
     buf->buffer[buf->dir_length] = 0;
   free (buf);