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87de27b7f9
All callers used the same initialization seed (well, the new viratomictest forgot to look at getpid()); so we might as well make this value automatic. And while it may feel like we are giving up functionality, I documented how to get it back in the unlikely case that you actually need to debug with a fixed pseudo-random sequence. I left that crippled by default, so that a stray environment variable doesn't cause a lack of randomness to become a security issue. * src/util/virrandom.c (virRandomInitialize): Rename... (virRandomOnceInit): ...and make static, with one-shot call. Document how to do fixed-seed debugging. * src/util/virrandom.h (virRandomInitialize): Drop prototype. * src/libvirt_private.syms (virrandom.h): Don't export it. * src/libvirt.c (virInitialize): Adjust caller. * src/lxc/lxc_controller.c (main): Likewise. * src/security/virt-aa-helper.c (main): Likewise. * src/util/iohelper.c (main): Likewise. * tests/seclabeltest.c (main): Likewise. * tests/testutils.c (virtTestMain): Likewise. * tests/viratomictest.c (mymain): Likewise.
786 lines
20 KiB
C
786 lines
20 KiB
C
/*
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* testutils.c: basic test utils
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*
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* Copyright (C) 2005-2012 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Karel Zak <kzak@redhat.com>
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifndef WIN32
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# include <sys/wait.h>
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#endif
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#ifdef HAVE_REGEX_H
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# include <regex.h>
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#endif
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <limits.h>
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#include "testutils.h"
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#include "internal.h"
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#include "memory.h"
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#include "util.h"
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#include "threads.h"
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#include "virterror_internal.h"
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#include "buf.h"
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#include "logging.h"
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#include "command.h"
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#include "virrandom.h"
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#include "dirname.h"
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#if TEST_OOM_TRACE
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# include <execinfo.h>
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#endif
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#ifdef HAVE_PATHS_H
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# include <paths.h>
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#endif
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#define VIR_FROM_THIS VIR_FROM_NONE
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#define GETTIMEOFDAY(T) gettimeofday(T, NULL)
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#define DIFF_MSEC(T, U) \
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((((int) ((T)->tv_sec - (U)->tv_sec)) * 1000000.0 + \
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((int) ((T)->tv_usec - (U)->tv_usec))) / 1000.0)
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#include "virfile.h"
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static unsigned int testDebug = -1;
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static unsigned int testVerbose = -1;
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static unsigned int testOOM = 0;
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static unsigned int testCounter = 0;
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char *progname;
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char *abs_srcdir;
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double
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virtTestCountAverage(double *items, int nitems)
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{
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long double sum = 0;
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int i;
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for (i=1; i < nitems; i++)
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sum += items[i];
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return (double) (sum / nitems);
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}
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void virtTestResult(const char *name, int ret, const char *msg, ...)
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{
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va_list vargs;
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va_start(vargs, msg);
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if (testCounter == 0 && !virTestGetVerbose())
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fprintf(stderr, " ");
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testCounter++;
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if (virTestGetVerbose()) {
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fprintf(stderr, "%3d) %-60s ", testCounter, name);
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if (ret == 0)
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fprintf(stderr, "OK\n");
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else {
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fprintf(stderr, "FAILED\n");
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if (msg) {
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char *str;
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if (virVasprintf(&str, msg, vargs) == 0) {
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fprintf(stderr, "%s", str);
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VIR_FREE(str);
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}
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}
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}
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} else {
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if (testCounter != 1 &&
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!((testCounter-1) % 40)) {
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fprintf(stderr, " %-3d\n", (testCounter-1));
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fprintf(stderr, " ");
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}
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if (ret == 0)
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fprintf(stderr, ".");
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else
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fprintf(stderr, "!");
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}
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va_end(vargs);
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}
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/*
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* Runs test and count average time (if the nloops is grater than 1)
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*
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* returns: -1 = error, 0 = success
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*/
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int
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virtTestRun(const char *title, int nloops, int (*body)(const void *data), const void *data)
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{
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int i, ret = 0;
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double *ts = NULL;
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if (testCounter == 0 && !virTestGetVerbose())
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fprintf(stderr, " ");
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testCounter++;
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if (testOOM < 2) {
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if (virTestGetVerbose())
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fprintf(stderr, "%2d) %-65s ... ", testCounter, title);
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}
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if (nloops > 1 && (VIR_ALLOC_N(ts, nloops) < 0))
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return -1;
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for (i=0; i < nloops; i++) {
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struct timeval before, after;
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if (ts)
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GETTIMEOFDAY(&before);
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virResetLastError();
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ret = body(data);
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virErrorPtr err = virGetLastError();
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if (err) {
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if (virTestGetVerbose() || virTestGetDebug())
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virDispatchError(NULL);
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}
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if (ret != 0) {
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break;
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}
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if (ts) {
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GETTIMEOFDAY(&after);
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ts[i] = DIFF_MSEC(&after, &before);
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}
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}
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if (testOOM < 2) {
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if (virTestGetVerbose()) {
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if (ret == 0 && ts)
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fprintf(stderr, "OK [%.5f ms]\n",
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virtTestCountAverage(ts, nloops));
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else if (ret == 0)
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fprintf(stderr, "OK\n");
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else if (ret == EXIT_AM_SKIP)
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fprintf(stderr, "SKIP\n");
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else
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fprintf(stderr, "FAILED\n");
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} else {
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if (testCounter != 1 &&
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!((testCounter-1) % 40)) {
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fprintf(stderr, " %-3d\n", (testCounter-1));
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fprintf(stderr, " ");
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}
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if (ret == 0)
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fprintf(stderr, ".");
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else if (ret == EXIT_AM_SKIP)
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fprintf(stderr, "_");
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else
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fprintf(stderr, "!");
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}
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}
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VIR_FREE(ts);
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return ret;
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}
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/* Allocate BUF to the size of FILE. Read FILE into buffer BUF.
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Upon any failure, diagnose it and return -1, but don't bother trying
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to preserve errno. Otherwise, return the number of bytes copied into BUF. */
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int
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virtTestLoadFile(const char *file, char **buf)
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{
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FILE *fp = fopen(file, "r");
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struct stat st;
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char *tmp;
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int len, tmplen, buflen;
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if (!fp) {
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fprintf (stderr, "%s: failed to open: %s\n", file, strerror(errno));
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return -1;
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}
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if (fstat(fileno(fp), &st) < 0) {
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fprintf (stderr, "%s: failed to fstat: %s\n", file, strerror(errno));
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VIR_FORCE_FCLOSE(fp);
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return -1;
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}
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tmplen = buflen = st.st_size + 1;
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if (VIR_ALLOC_N(*buf, buflen) < 0) {
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fprintf (stderr, "%s: larger than available memory (> %d)\n", file, buflen);
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VIR_FORCE_FCLOSE(fp);
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return -1;
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}
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tmp = *buf;
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(*buf)[0] = '\0';
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if (st.st_size) {
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/* read the file line by line */
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while (fgets(tmp, tmplen, fp) != NULL) {
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len = strlen(tmp);
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/* stop on an empty line */
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if (len == 0)
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break;
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/* remove trailing backslash-newline pair */
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if (len >= 2 && tmp[len-2] == '\\' && tmp[len-1] == '\n') {
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len -= 2;
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tmp[len] = '\0';
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}
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/* advance the temporary buffer pointer */
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tmp += len;
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tmplen -= len;
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}
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if (ferror(fp)) {
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fprintf (stderr, "%s: read failed: %s\n", file, strerror(errno));
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VIR_FORCE_FCLOSE(fp);
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VIR_FREE(*buf);
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return -1;
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}
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}
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VIR_FORCE_FCLOSE(fp);
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return strlen(*buf);
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}
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#ifndef WIN32
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static
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void virtTestCaptureProgramExecChild(const char *const argv[],
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int pipefd) {
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int i;
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int open_max;
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int stdinfd = -1;
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const char *const env[] = {
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"LANG=C",
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# if WITH_DRIVER_MODULES
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"LIBVIRT_DRIVER_DIR=" TEST_DRIVER_DIR,
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# endif
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NULL
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};
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if ((stdinfd = open("/dev/null", O_RDONLY)) < 0)
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goto cleanup;
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open_max = sysconf (_SC_OPEN_MAX);
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for (i = 0; i < open_max; i++) {
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if (i != stdinfd &&
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i != pipefd) {
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int tmpfd = i;
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VIR_FORCE_CLOSE(tmpfd);
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}
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}
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if (dup2(stdinfd, STDIN_FILENO) != STDIN_FILENO)
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goto cleanup;
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if (dup2(pipefd, STDOUT_FILENO) != STDOUT_FILENO)
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goto cleanup;
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if (dup2(pipefd, STDERR_FILENO) != STDERR_FILENO)
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goto cleanup;
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/* SUS is crazy here, hence the cast */
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execve(argv[0], (char *const*)argv, (char *const*)env);
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cleanup:
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VIR_FORCE_CLOSE(stdinfd);
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}
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int
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virtTestCaptureProgramOutput(const char *const argv[], char **buf, int maxlen)
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{
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int pipefd[2];
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int len;
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if (pipe(pipefd) < 0)
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return -1;
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pid_t pid = fork();
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switch (pid) {
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case 0:
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VIR_FORCE_CLOSE(pipefd[0]);
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virtTestCaptureProgramExecChild(argv, pipefd[1]);
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VIR_FORCE_CLOSE(pipefd[1]);
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_exit(1);
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case -1:
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return -1;
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default:
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VIR_FORCE_CLOSE(pipefd[1]);
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len = virFileReadLimFD(pipefd[0], maxlen, buf);
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VIR_FORCE_CLOSE(pipefd[0]);
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if (virPidWait(pid, NULL) < 0)
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return -1;
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return len;
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}
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}
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#else /* !WIN32 */
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int
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virtTestCaptureProgramOutput(const char *const argv[] ATTRIBUTE_UNUSED,
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char **buf ATTRIBUTE_UNUSED,
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int maxlen ATTRIBUTE_UNUSED)
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{
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return -1;
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}
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#endif /* !WIN32 */
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|
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/**
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* @param stream: output stream write to differences to
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* @param expect: expected output text
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* @param actual: actual output text
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*
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* Display expected and actual output text, trimmed to
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* first and last characters at which differences occur
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*/
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int virtTestDifference(FILE *stream,
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const char *expect,
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const char *actual)
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{
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const char *expectStart = expect;
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const char *expectEnd = expect + (strlen(expect)-1);
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const char *actualStart = actual;
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const char *actualEnd = actual + (strlen(actual)-1);
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if (!virTestGetDebug())
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return 0;
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if (virTestGetDebug() < 2) {
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/* Skip to first character where they differ */
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while (*expectStart && *actualStart &&
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*actualStart == *expectStart) {
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actualStart++;
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expectStart++;
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}
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/* Work backwards to last character where they differ */
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while (actualEnd > actualStart &&
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expectEnd > expectStart &&
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*actualEnd == *expectEnd) {
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actualEnd--;
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expectEnd--;
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}
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}
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/* Show the trimmed differences */
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fprintf(stream, "\nOffset %d\nExpect [", (int) (expectStart - expect));
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if ((expectEnd - expectStart + 1) &&
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fwrite(expectStart, (expectEnd-expectStart+1), 1, stream) != 1)
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return -1;
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fprintf(stream, "]\n");
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fprintf(stream, "Actual [");
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if ((actualEnd - actualStart + 1) &&
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fwrite(actualStart, (actualEnd-actualStart+1), 1, stream) != 1)
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return -1;
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fprintf(stream, "]\n");
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/* Pad to line up with test name ... in virTestRun */
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fprintf(stream, " ... ");
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return 0;
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}
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/**
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* @param stream: output stream write to differences to
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* @param expect: expected output text
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* @param actual: actual output text
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*
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* Display expected and actual output text, trimmed to
|
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* first and last characters at which differences occur
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*/
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int virtTestDifferenceBin(FILE *stream,
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const char *expect,
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const char *actual,
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size_t length)
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{
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size_t start = 0, end = length;
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ssize_t i;
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|
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if (!virTestGetDebug())
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return 0;
|
|
|
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if (virTestGetDebug() < 2) {
|
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/* Skip to first character where they differ */
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for (i = 0 ; i < length ; i++) {
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if (expect[i] != actual[i]) {
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start = i;
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break;
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}
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}
|
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|
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/* Work backwards to last character where they differ */
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for (i = (length -1) ; i >= 0 ; i--) {
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if (expect[i] != actual[i]) {
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end = i;
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break;
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}
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}
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}
|
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/* Round to nearest boundary of 4, except that last word can be short */
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start -= (start % 4);
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end += 4 - (end % 4);
|
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if (end >= length)
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end = length - 1;
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/* Show the trimmed differences */
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fprintf(stream, "\nExpect [ Region %d-%d", (int)start, (int)end);
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for (i = start; i < end ; i++) {
|
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if ((i % 4) == 0)
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fprintf(stream, "\n ");
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fprintf(stream, "0x%02x, ", ((int)expect[i])&0xff);
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}
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fprintf(stream, "]\n");
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fprintf(stream, "Actual [ Region %d-%d", (int)start, (int)end);
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for (i = start; i < end ; i++) {
|
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if ((i % 4) == 0)
|
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fprintf(stream, "\n ");
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fprintf(stream, "0x%02x, ", ((int)actual[i])&0xff);
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}
|
|
fprintf(stream, "]\n");
|
|
|
|
/* Pad to line up with test name ... in virTestRun */
|
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fprintf(stream, " ... ");
|
|
|
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return 0;
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|
}
|
|
|
|
#if TEST_OOM
|
|
static void
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virtTestErrorFuncQuiet(void *data ATTRIBUTE_UNUSED,
|
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virErrorPtr err ATTRIBUTE_UNUSED)
|
|
{ }
|
|
#endif
|
|
|
|
struct virtTestLogData {
|
|
virBuffer buf;
|
|
};
|
|
|
|
static struct virtTestLogData testLog = { VIR_BUFFER_INITIALIZER };
|
|
|
|
static int
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|
virtTestLogOutput(const char *category ATTRIBUTE_UNUSED,
|
|
int priority ATTRIBUTE_UNUSED,
|
|
const char *funcname ATTRIBUTE_UNUSED,
|
|
long long lineno ATTRIBUTE_UNUSED,
|
|
const char *timestamp,
|
|
unsigned int flags,
|
|
const char *str,
|
|
void *data)
|
|
{
|
|
struct virtTestLogData *log = data;
|
|
virCheckFlags(VIR_LOG_STACK_TRACE, -1);
|
|
virBufferAsprintf(&log->buf, "%s: %s", timestamp, str);
|
|
return strlen(timestamp) + 2 + strlen(str);
|
|
}
|
|
|
|
static void
|
|
virtTestLogClose(void *data)
|
|
{
|
|
struct virtTestLogData *log = data;
|
|
|
|
virBufferFreeAndReset(&log->buf);
|
|
}
|
|
|
|
/* Return a malloc'd string (possibly with strlen of 0) of all data
|
|
* logged since the last call to this function, or NULL on failure. */
|
|
char *
|
|
virtTestLogContentAndReset(void)
|
|
{
|
|
char *ret;
|
|
|
|
if (virBufferError(&testLog.buf))
|
|
return NULL;
|
|
ret = virBufferContentAndReset(&testLog.buf);
|
|
return ret ? ret : strdup("");
|
|
}
|
|
|
|
#if TEST_OOM_TRACE
|
|
static void
|
|
virtTestErrorHook(int n, void *data ATTRIBUTE_UNUSED)
|
|
{
|
|
void *trace[30];
|
|
int ntrace = ARRAY_CARDINALITY(trace);
|
|
int i;
|
|
char **symbols = NULL;
|
|
|
|
ntrace = backtrace(trace, ntrace);
|
|
symbols = backtrace_symbols(trace, ntrace);
|
|
if (symbols) {
|
|
fprintf(stderr, "Failing allocation %d at:\n", n);
|
|
for (i = 0 ; i < ntrace ; i++) {
|
|
if (symbols[i])
|
|
fprintf(stderr, " TRACE: %s\n", symbols[i]);
|
|
}
|
|
VIR_FREE(symbols);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static unsigned int
|
|
virTestGetFlag(const char *name) {
|
|
char *flagStr;
|
|
unsigned int flag;
|
|
|
|
if ((flagStr = getenv(name)) == NULL)
|
|
return 0;
|
|
|
|
if (virStrToLong_ui(flagStr, NULL, 10, &flag) < 0)
|
|
return 0;
|
|
|
|
return flag;
|
|
}
|
|
|
|
unsigned int
|
|
virTestGetDebug(void) {
|
|
if (testDebug == -1)
|
|
testDebug = virTestGetFlag("VIR_TEST_DEBUG");
|
|
return testDebug;
|
|
}
|
|
|
|
unsigned int
|
|
virTestGetVerbose(void) {
|
|
if (testVerbose == -1)
|
|
testVerbose = virTestGetFlag("VIR_TEST_VERBOSE");
|
|
return testVerbose || virTestGetDebug();
|
|
}
|
|
|
|
int virtTestMain(int argc,
|
|
char **argv,
|
|
int (*func)(void))
|
|
{
|
|
int ret;
|
|
bool abs_srcdir_cleanup = false;
|
|
#if TEST_OOM
|
|
int approxAlloc = 0;
|
|
int n;
|
|
char *oomStr = NULL;
|
|
int oomCount;
|
|
int mp = 0;
|
|
pid_t *workers;
|
|
int worker = 0;
|
|
#endif
|
|
|
|
abs_srcdir = getenv("abs_srcdir");
|
|
if (!abs_srcdir) {
|
|
abs_srcdir = getcwd(NULL, 0);
|
|
abs_srcdir_cleanup = true;
|
|
}
|
|
if (!abs_srcdir)
|
|
exit(EXIT_AM_HARDFAIL);
|
|
|
|
progname = last_component(argv[0]);
|
|
if (STRPREFIX(progname, "lt-"))
|
|
progname += 3;
|
|
if (argc > 1) {
|
|
fprintf(stderr, "Usage: %s\n", argv[0]);
|
|
fputs("effective environment variables:\n"
|
|
"VIR_TEST_VERBOSE set to show names of individual tests\n"
|
|
"VIR_TEST_DEBUG set to show information for debugging failures\n",
|
|
stderr);
|
|
return EXIT_FAILURE;
|
|
}
|
|
fprintf(stderr, "TEST: %s\n", progname);
|
|
|
|
if (virThreadInitialize() < 0 ||
|
|
virErrorInitialize() < 0)
|
|
return 1;
|
|
|
|
virLogSetFromEnv();
|
|
if (!getenv("LIBVIRT_DEBUG") && !virLogGetNbOutputs()) {
|
|
if (virLogDefineOutput(virtTestLogOutput, virtTestLogClose, &testLog,
|
|
0, 0, NULL, 0) < 0)
|
|
return 1;
|
|
}
|
|
|
|
#if TEST_OOM
|
|
if ((oomStr = getenv("VIR_TEST_OOM")) != NULL) {
|
|
if (virStrToLong_i(oomStr, NULL, 10, &oomCount) < 0)
|
|
oomCount = 0;
|
|
|
|
if (oomCount < 0)
|
|
oomCount = 0;
|
|
if (oomCount)
|
|
testOOM = 1;
|
|
}
|
|
|
|
if (getenv("VIR_TEST_MP") != NULL) {
|
|
mp = sysconf(_SC_NPROCESSORS_ONLN);
|
|
fprintf(stderr, "Using %d worker processes\n", mp);
|
|
if (VIR_ALLOC_N(workers, mp) < 0) {
|
|
ret = EXIT_FAILURE;
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
/* Run once to prime any static allocations & ensure it passes */
|
|
ret = (func)();
|
|
if (ret != EXIT_SUCCESS)
|
|
goto cleanup;
|
|
|
|
# if TEST_OOM_TRACE
|
|
if (virTestGetDebug())
|
|
virAllocTestHook(virtTestErrorHook, NULL);
|
|
# endif
|
|
|
|
if (testOOM) {
|
|
/* Makes next test runs quiet... */
|
|
testOOM++;
|
|
virSetErrorFunc(NULL, virtTestErrorFuncQuiet);
|
|
|
|
virAllocTestInit();
|
|
|
|
/* Run again to count allocs, and ensure it passes :-) */
|
|
ret = (func)();
|
|
if (ret != EXIT_SUCCESS)
|
|
goto cleanup;
|
|
|
|
approxAlloc = virAllocTestCount();
|
|
testCounter++;
|
|
if (virTestGetDebug())
|
|
fprintf(stderr, "%d) OOM...\n", testCounter);
|
|
else
|
|
fprintf(stderr, "%d) OOM of %d allocs ", testCounter, approxAlloc);
|
|
|
|
if (mp) {
|
|
int i;
|
|
for (i = 0 ; i < mp ; i++) {
|
|
workers[i] = fork();
|
|
if (workers[i] == 0) {
|
|
worker = i + 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Run once for each alloc, failing a different one
|
|
and validating that the test case failed */
|
|
for (n = 0; n < approxAlloc && (!mp || worker) ; n++) {
|
|
if (mp &&
|
|
(n % mp) != (worker - 1))
|
|
continue;
|
|
if (!virTestGetDebug()) {
|
|
if (mp)
|
|
fprintf(stderr, "%d", worker);
|
|
else
|
|
fprintf(stderr, ".");
|
|
fflush(stderr);
|
|
}
|
|
virAllocTestOOM(n+1, oomCount);
|
|
|
|
if (((func)()) != EXIT_FAILURE) {
|
|
ret = EXIT_FAILURE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (mp) {
|
|
if (worker) {
|
|
_exit(ret);
|
|
} else {
|
|
int i, status;
|
|
for (i = 0 ; i < mp ; i++) {
|
|
if (virPidWait(workers[i], NULL) < 0)
|
|
ret = EXIT_FAILURE;
|
|
}
|
|
VIR_FREE(workers);
|
|
}
|
|
}
|
|
|
|
if (virTestGetDebug())
|
|
fprintf(stderr, " ... OOM of %d allocs", approxAlloc);
|
|
|
|
if (ret == EXIT_SUCCESS)
|
|
fprintf(stderr, " OK\n");
|
|
else
|
|
fprintf(stderr, " FAILED\n");
|
|
}
|
|
cleanup:
|
|
#else
|
|
ret = (func)();
|
|
#endif
|
|
|
|
if (abs_srcdir_cleanup)
|
|
VIR_FREE(abs_srcdir);
|
|
virResetLastError();
|
|
if (!virTestGetVerbose() && ret != EXIT_AM_SKIP) {
|
|
if (testCounter == 0 || testCounter % 40)
|
|
fprintf(stderr, "%*s", 40 - (testCounter % 40), "");
|
|
fprintf(stderr, " %-3d %s\n", testCounter, ret == 0 ? "OK" : "FAIL");
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
#ifdef HAVE_REGEX_H
|
|
int virtTestClearLineRegex(const char *pattern,
|
|
char *str)
|
|
{
|
|
regex_t reg;
|
|
char *lineStart = str;
|
|
char *lineEnd = strchr(str, '\n');
|
|
|
|
if (regcomp(®, pattern, REG_EXTENDED | REG_NOSUB) != 0)
|
|
return -1;
|
|
|
|
while (lineStart) {
|
|
int ret;
|
|
if (lineEnd)
|
|
*lineEnd = '\0';
|
|
|
|
|
|
ret = regexec(®, lineStart, 0, NULL, 0);
|
|
//fprintf(stderr, "Match %d '%s' '%s'\n", ret, lineStart, pattern);
|
|
if (ret == 0) {
|
|
if (lineEnd) {
|
|
memmove(lineStart, lineEnd + 1, strlen(lineEnd+1) + 1);
|
|
/* Don't update lineStart - just iterate again on this
|
|
location */
|
|
lineEnd = strchr(lineStart, '\n');
|
|
} else {
|
|
*lineStart = '\0';
|
|
lineStart = NULL;
|
|
}
|
|
} else {
|
|
if (lineEnd) {
|
|
*lineEnd = '\n';
|
|
lineStart = lineEnd + 1;
|
|
lineEnd = strchr(lineStart, '\n');
|
|
} else {
|
|
lineStart = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
regfree(®);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
int virtTestClearLineRegex(const char *pattern ATTRIBUTE_UNUSED,
|
|
char *str ATTRIBUTE_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|