rocklinux/misc/tools-source/fl_wrapper_open.c

/* ROCK Linux Wrapper for getting a list of created files
 *
 * --- ROCK-COPYRIGHT-NOTE-BEGIN ---
 * 
 * This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 * Please add additional copyright information _after_ the line containing
 * the ROCK-COPYRIGHT-NOTE-END tag. Otherwise it might get removed by
 * the ./scripts/Create-CopyPatch script. Do not edit this copyright text!
 * 
 * ROCK Linux: rock-src/misc/tools-source/fl_wrapper_open.c
 * ROCK Linux is Copyright (C) 1998 - 2006 Clifford Wolf
 * 
 * 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 Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version. A copy of the GNU General Public
 * License can be found at Documentation/COPYING.
 * 
 * Many people helped and are helping developing ROCK Linux. Please
 * have a look at http://www.rocklinux.org/ and the Documentation/TEAM
 * file for details.
 * 
 * --- ROCK-COPYRIGHT-NOTE-END ---
 */
extern int open(const char* f, int a, ...);
int (*orig_open)(const char* f, int a, ...) = 0;

int open(const char* f, int a, ...)
{
	struct status_t status;
	int old_errno=errno;
	int rc;

	handle_file_access_before("open", f, &status);
	if (!orig_open) orig_open = get_dl_symbol("open");
	errno=old_errno;

#if DEBUG == 1
	fprintf(stderr, "fl_wrapper.so debug [%d]: going to run original open() at %p (wrapper is at %p).\n",
		getpid(), orig_open, open);
#endif
	if (a & O_CREAT)
	{
		va_list ap;
		mode_t b = 0;

		va_start(ap, a);
		b = va_arg(ap, mode_t);
		va_end(ap);

		rc = orig_open(f, a, b);
	}
	else
		rc = orig_open(f, a);

	old_errno=errno;
	handle_file_access_after("open", f, &status);
	errno=old_errno;

	return rc;
}

extern int open64(const char* f, int a, ...);
int (*orig_open64)(const char* f, int a, ...) = 0;

int open64(const char* f, int a, ...)
{
	struct status_t status;
	int old_errno=errno;
	int rc;

	handle_file_access_before("open64", f, &status);
	if (!orig_open64) orig_open64 = get_dl_symbol("open64");
	errno=old_errno;

#if DEBUG == 1
	fprintf(stderr, "fl_wrapper.so debug [%d]: going to run original open64() at %p (wrapper is at %p).\n",
		getpid(), orig_open64, open64);
#endif
	if (a & O_CREAT)
	{
		va_list ap;
		mode_t b = 0;

		va_start(ap, a);
		b = va_arg(ap, mode_t);
		va_end(ap);

		rc = orig_open64(f, a, b);
	}
	else
		rc = orig_open64(f, a);

	old_errno=errno;
	handle_file_access_after("open64", f, &status);
	errno=old_errno;

	return rc;
}