Check return value from xgetcwd

* src/misc.c (chdir_arg,tar_getcdpath): Check for non-NULL
return from xgetcwd. The function returns NULL for any
error originating from getcwd.

diff --git a/src/misc.c b/src/misc.c
index cb7254f266c4e2d7d41387c083e9edfff50f0047..49ab775e0f41abc95310c18d458afad41444edec 100644 (file)
--- a/src/misc.c
+++ b/src/misc.c
@@ -314,8 +314,6 @@ normalize_filename (int cdidx, const char *name)
       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]));
@@ -922,6 +920,8 @@ chdir_arg (char const *dir)
        {
          wd[wd_count].name = ".";
          wd[wd_count].abspath = xgetcwd ();
+         if (!wd[wd_count].abspath)
+           call_arg_fatal ("getcwd", ".");
          wd[wd_count].fd = AT_FDCWD;
          wd_count++;
        }
@@ -1047,7 +1047,11 @@ tar_getcdpath (int idx)
     {
       static char *cwd;
       if (!cwd)
-       cwd = xgetcwd ();
+       {
+         cwd = xgetcwd ();
+         if (!cwd)
+           call_arg_fatal ("getcwd", ".");
+       }
       return cwd;
     }
   return wd[idx].abspath;