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/*
* open.c
*
* open() wrapper.
*
* Copyright 1999-2008 Gentoo Foundation
* Licensed under the GPL-2
*
* Partly Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>,
* as some of the InstallWatch code was used.
*/
extern int EXTERN_NAME(const char *, int, ...);
static int (*WRAPPER_TRUE_NAME) (const char *, int, ...) = NULL;
/* Eventually, there is a third parameter: it's mode_t mode */
int WRAPPER_NAME(const char *pathname, int flags, ...)
{
va_list ap;
int mode = 0;
int result = -1;
int old_errno = errno;
struct stat st;
if (flags & O_CREAT) {
va_start(ap, flags);
mode = va_arg(ap, int);
va_end(ap);
} else {
/* XXX: If we're not trying to create, fail normally if
* file does not stat */
if (-1 == stat(pathname, &st)) {
return -1;
}
}
errno = old_errno;
if FUNCTION_SANDBOX_SAFE_OPEN_INT("open", pathname, flags) {
check_dlsym(WRAPPER_TRUE_NAME, WRAPPER_SYMNAME,
WRAPPER_SYMVER);
if (flags & O_CREAT)
result = WRAPPER_TRUE_NAME(pathname, flags, mode);
else
result = WRAPPER_TRUE_NAME(pathname, flags);
}
return result;
}
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