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tests: cgroupmock: Use the temporary directory as fake root

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We might need to mock files living outside SYSFS_PREFIX later on,
so it's better to treat the temporary directory we are passed via
the environment as the root of the fake filesystem and create
SYSFS_PREFIX inside it.

The environment variable name will be changed to reflect the new use
we're making of it in a later commit.
This commit is contained in:
Andrea Bolognani 2015-12-04 10:54:29 +01:00
parent f94398e72e
commit bc80c45d5d
1 changed files with 14 additions and 2 deletions
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16
tests/vircgroupmock.c
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@ -31,6 +31,8 @@
# include <sys/stat.h>
# include <stdarg.h>
# include "testutilslxc.h"
# include "virstring.h"
# include "virfile.h"
static int (*realopen)(const char *path, int flags, ...);
static FILE *(*realfopen)(const char *path, const char *mode);
@ -45,6 +47,7 @@ static int (*realmkdir)(const char *path, mode_t mode);
* when passed as an arg to asprintf()
* vircgroupmock.c:462:22: error: static variable 'fakesysfsdir' is used in an inline function with external linkage [-Werror,-Wstatic-in-inline]
*/
char *fakerootdir;
char *fakesysfsdir;
const char *fakedevicedir0 = FAKEDEVDIR0;
const char *fakedevicedir1 = FAKEDEVDIR1;
@ -414,14 +417,23 @@ static void init_syms(void)
static void init_sysfs(void)
{
if (fakesysfsdir)
if (fakerootdir && fakesysfsdir)
return;
if (!(fakesysfsdir = getenv("LIBVIRT_FAKE_SYSFS_DIR"))) {
if (!(fakerootdir = getenv("LIBVIRT_FAKE_SYSFS_DIR"))) {
fprintf(stderr, "Missing LIBVIRT_FAKE_SYSFS_DIR env variable\n");
abort();
}
if (virAsprintfQuiet(&fakesysfsdir, "%s%s",
fakerootdir, SYSFS_PREFIX) < 0)
abort();
if (virFileMakePath(fakesysfsdir) < 0) {
fprintf(stderr, "Cannot create %s\n", fakesysfsdir);
abort();
}
# define MAKE_CONTROLLER(subpath) \
do { \
char *path; \