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mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-12-22 17:34:18 +03:00
libvirt/tests/nssmock.c
Michal Privoznik b7e6513a01 tests: mock __open_2()
As of commit [1] glibc may overwrite a call to open() with call
to __open_2() (if only two arguments are provided and the code is
compiled with clang). But since we are not mocking the latter our
test suite is broken as tests try to access paths outside of our
repo.

1: https://sourceware.org/git/?p=glibc.git;a=commit;h=86889e22db329abac618c6a41f86c84657a15324
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2024-03-14 15:17:48 +01:00

157 lines
3.3 KiB
C

/*
* Copyright (C) 2016 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/>.
*/
#include <config.h>
#ifdef WITH_NSS
# include "virmock.h"
# include <sys/types.h>
# include <dirent.h>
# include <sys/stat.h>
# include <fcntl.h>
# include <unistd.h>
# include "configmake.h"
static int (*real_open)(const char *path, int flags, ...);
# if WITH___OPEN_2
static int (*real___open_2)(const char *path, int flags);
# endif
static DIR * (*real_opendir)(const char *name);
static int (*real_access)(const char *path, int mode);
# define LEASEDIR LOCALSTATEDIR "/lib/libvirt/dnsmasq/"
/*
* Functions to load the symbols and init the environment
*/
static void
init_syms(void)
{
if (real_open)
return;
VIR_MOCK_REAL_INIT(open);
# if WITH___OPEN_2
VIR_MOCK_REAL_INIT(__open_2);
# endif
VIR_MOCK_REAL_INIT(opendir);
VIR_MOCK_REAL_INIT(access);
}
static int
getrealpath(char **newpath,
const char *path)
{
if (STRPREFIX(path, LEASEDIR)) {
*newpath = g_strdup_printf("%s/nssdata/%s",
abs_srcdir,
path + strlen(LEASEDIR));
} else {
*newpath = g_strdup(path);
}
return 0;
}
int
open(const char *path, int flags, ...)
{
int ret;
char *newpath = NULL;
init_syms();
if (STRPREFIX(path, LEASEDIR) &&
getrealpath(&newpath, path) < 0)
return -1;
if (flags & O_CREAT) {
va_list ap;
mode_t mode;
va_start(ap, flags);
mode = (mode_t) va_arg(ap, int);
va_end(ap);
ret = real_open(newpath ? newpath : path, flags, mode);
} else {
ret = real_open(newpath ? newpath : path, flags);
}
free(newpath);
return ret;
}
# if WITH___OPEN_2
int
__open_2(const char *path, int flags)
{
int ret;
char *newpath = NULL;
init_syms();
if (STRPREFIX(path, LEASEDIR) &&
getrealpath(&newpath, path) < 0)
return -1;
ret = real___open_2(newpath ? newpath : path, flags);
free(newpath);
return ret;
}
# endif
DIR *
opendir(const char *path)
{
DIR *ret;
char *newpath = NULL;
init_syms();
if (STRPREFIX(path, LEASEDIR) &&
getrealpath(&newpath, path) < 0)
return NULL;
ret = real_opendir(newpath ? newpath : path);
free(newpath);
return ret;
}
int
access(const char *path, int mode)
{
int ret;
char *newpath = NULL;
init_syms();
if (STRPREFIX(path, LEASEDIR) &&
getrealpath(&newpath, path) < 0)
return -1;
ret = real_access(newpath ? newpath : path, mode);
free(newpath);
return ret;
}
#else
/* Nothing to override if NSS plugin is not enabled */
#endif