libvirt/tests/virusbmock.c
Erik Skultety 5165ff0971 src: More cleanup of some system headers already contained in internal.h
All of the ones being removed are pulled in by internal.h. The only
exception is sanlock which expects the application to include <stdint.h>
before sanlock's headers, because sanlock prototypes use fixed width
int, but they don't include stdint.h themselves, so we have to leave
that one in place.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
2018-09-20 10:16:39 +02:00

112 lines
2.5 KiB
C

/*
* Copyright (C) 2014 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Jan Tomko <jtomko@redhat.com>
*/
#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <dlfcn.h>
#include <fcntl.h>
#include "viralloc.h"
#include "virfile.h"
#include "virstring.h"
#include "virusb.h"
#define USB_SYSFS "/sys/bus/usb"
#define FAKE_USB_SYSFS "virusbtestdata/sys_bus_usb"
static int (*realopen)(const char *pathname, int flags, ...);
static DIR *(*realopendir)(const char *name);
static void init_syms(void)
{
if (realopen)
return;
realopen = dlsym(RTLD_NEXT, "open");
realopendir = dlsym(RTLD_NEXT, "opendir");
if (!realopen || !realopendir) {
fprintf(stderr, "Error getting symbols");
abort();
}
}
static char *get_fake_path(const char *real_path)
{
const char *p = NULL;
char *path = NULL;
if ((p = STRSKIP(real_path, USB_SYSFS)) &&
virAsprintfQuiet(&path, "%s/%s/%s", abs_srcdir, FAKE_USB_SYSFS, p) < 0)
goto error;
else if (!p && VIR_STRDUP_QUIET(path, real_path) < 0)
goto error;
return path;
error:
errno = ENOMEM;
return NULL;
}
DIR *opendir(const char *name)
{
char *path;
DIR* ret;
init_syms();
path = get_fake_path(name);
ret = realopendir(path);
VIR_FREE(path);
return ret;
}
int open(const char *pathname, int flags, ...)
{
char *path;
int ret;
va_list ap;
mode_t mode = 0;
init_syms();
path = get_fake_path(pathname);
if (!path)
return -1;
/* The mode argument is mandatory when O_CREAT is set in flags,
* otherwise the argument is ignored.
*/
if (flags & O_CREAT) {
va_start(ap, flags);
mode = (mode_t) va_arg(ap, int);
va_end(ap);
}
ret = realopen(path, flags, mode);
VIR_FREE(path);
return ret;
}