/* modechange.c -- file mode manipulation
- Copyright (C) 1989, 1990 Free Software Foundation, Inc.
+ Copyright (C) 1989, 1990, 1997 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
changing the mode of many files, this probably results in a
performance gain. */
-#ifdef HAVE_CONFIG_H
-#include <config.h>
+#if HAVE_CONFIG_H
+# include <config.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include "modechange.h"
-#ifdef STDC_HEADERS
-#include <stdlib.h>
+#if STDC_HEADERS
+# include <stdlib.h>
#else
char *malloc ();
#endif
#ifndef NULL
-#define NULL 0
+# define NULL 0
#endif
-#ifdef STAT_MACROS_BROKEN
-#undef S_ISDIR
-#endif /* STAT_MACROS_BROKEN. */
+#if STAT_MACROS_BROKEN
+# undef S_ISDIR
+#endif
#if !defined(S_ISDIR) && defined(S_IFDIR)
-#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
/* Return newly allocated memory to hold one element of type TYPE. */
return MODE_INVALID;
}
+/* Return a file mode change operation that sets permissions to match those
+ of REF_FILE. Return MODE_BAD_REFERENCE if REF_FILE can't be accessed. */
+
+struct mode_change *
+mode_create_from_ref (ref_file)
+ const char *ref_file;
+{
+ struct mode_change *change; /* the only change element */
+ struct stat ref_stats;
+
+ if (stat (ref_file, &ref_stats))
+ return MODE_BAD_REFERENCE;
+
+ change = talloc (struct mode_change);
+
+ if (change == NULL)
+ return MODE_MEMORY_EXHAUSTED;
+
+ change->op = '=';
+ change->flags = 0;
+ change->affected = 07777;
+ change->value = ref_stats.st_mode;
+ change->next = NULL;
+
+ return change;
+}
+
/* Return file mode OLDMODE, adjusted as indicated by the list of change
operations CHANGES. If OLDMODE is a directory, the type `X'
change affects it even if no execute bits were set in OLDMODE.