Bash-4.2 distribution sources and documentation

[platform/upstream/bash.git] / builtins / exec.def

diff --git a/builtins/exec.def b/builtins/exec.def
index 0837a98..5d1e625 100644 (file)
--- a/builtins/exec.def
+++ b/builtins/exec.def
@@ -1,7 +1,7 @@
 This file is exec.def, from which is created exec.c.
 It implements the builtin "exec" in Bash.
 
-Copyright (C) 1987-2009 Free Software Foundation, Inc.
+Copyright (C) 1987-2010 Free Software Foundation, Inc.
 
 This file is part of GNU Bash, the Bourne Again SHell.
 
@@ -76,6 +76,7 @@ extern int errno;
 
 extern int subshell_environment;
 extern REDIRECT *redirection_undo_list;
+extern char *exec_argv0;
 
 int no_exit_on_failed_exec;
 
@@ -102,7 +103,7 @@ exec_builtin (list)
   char *argv0, *command, **args, **env, *newname, *com2;
 
   cleanenv = login = 0;
-  argv0 = (char *)NULL;
+  exec_argv0 = argv0 = (char *)NULL;
 
   reset_internal_getopt ();
   while ((opt = internal_getopt (list, "cla:")) != -1)
@@ -147,8 +148,20 @@ exec_builtin (list)
 
   if (command == 0)
     {
-      sh_notfound (args[0]);
-      exit_value = EX_NOTFOUND;        /* As per Posix.2, 3.14.6 */
+      if (file_isdir (args[0]))
+       {
+#if defined (EISDIR)
+         builtin_error (_("%s: cannot execute: %s"), args[0], strerror (EISDIR));
+#else
+         builtin_error (_("%s: cannot execute: %s"), args[0], strerror (errno));
+#endif
+         exit_value = EX_NOEXEC;
+       }
+      else
+       {
+         sh_notfound (args[0]);
+         exit_value = EX_NOTFOUND;     /* As per Posix.2, 3.14.6 */
+       }
       goto failed_exec;
     }
 
@@ -164,6 +177,7 @@ exec_builtin (list)
     {
       free (args[0]);
       args[0] = login ? mkdashname (argv0) : savestring (argv0);
+      exec_argv0 = savestring (args[0]);
     }
   else if (login)
     {
@@ -198,7 +212,7 @@ exec_builtin (list)
     end_job_control ();
 #endif /* JOB_CONTROL */
 
-  shell_execve (command, args, env);
+  exit_value = shell_execve (command, args, env);
 
   /* We have to set this to NULL because shell_execve has called realloc()
      to stuff more items at the front of the array, which may have caused
@@ -207,7 +221,9 @@ exec_builtin (list)
   if (cleanenv == 0)
     adjust_shell_level (1);
 
-  if (executable_file (command) == 0)
+  if (exit_value == EX_NOTFOUND)       /* no duplicate error message */
+    goto failed_exec;
+  else if (executable_file (command) == 0)
     {
       builtin_error (_("%s: cannot execute: %s"), command, strerror (errno));
       exit_value = EX_NOEXEC;  /* As per Posix.2, 3.14.6 */