704 lines
15 KiB
C
704 lines
15 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2016 Lawrence Livermore National Security, LLC.
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*/
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/*
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* An extended attribute (xattr) correctness test. This program creates
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* N files and sets M attrs on them of size S. Optionally is will verify
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* a pattern stored in the xattr.
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*/
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <getopt.h>
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#include <fcntl.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/xattr.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <linux/limits.h>
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extern char *program_invocation_short_name;
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#define ERROR(fmt, ...) \
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fprintf(stderr, "%s: %s:%d: %s: " fmt "\n", \
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program_invocation_short_name, __FILE__, __LINE__, \
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__func__, ## __VA_ARGS__);
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static const char shortopts[] = "hvycdn:f:x:s:p:t:e:rRko:";
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static const struct option longopts[] = {
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{ "help", no_argument, 0, 'h' },
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{ "verbose", no_argument, 0, 'v' },
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{ "verify", no_argument, 0, 'y' },
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{ "nth", required_argument, 0, 'n' },
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{ "files", required_argument, 0, 'f' },
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{ "xattrs", required_argument, 0, 'x' },
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{ "size", required_argument, 0, 's' },
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{ "path", required_argument, 0, 'p' },
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{ "synccaches", no_argument, 0, 'c' },
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{ "dropcaches", no_argument, 0, 'd' },
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{ "script", required_argument, 0, 't' },
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{ "seed", required_argument, 0, 'e' },
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{ "random", no_argument, 0, 'r' },
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{ "randomvalue", no_argument, 0, 'R' },
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{ "keep", no_argument, 0, 'k' },
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{ "only", required_argument, 0, 'o' },
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{ 0, 0, 0, 0 }
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};
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enum phases {
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PHASE_ALL = 0,
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PHASE_CREATE,
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PHASE_SETXATTR,
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PHASE_GETXATTR,
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PHASE_UNLINK,
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PHASE_INVAL
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};
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static int verbose = 0;
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static int verify = 0;
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static int synccaches = 0;
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static int dropcaches = 0;
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static int nth = 0;
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static int files = 1000;
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static int xattrs = 1;
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static int size = 6;
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static int size_is_random = 0;
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static int value_is_random = 0;
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static int keep_files = 0;
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static int phase = PHASE_ALL;
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static char path[PATH_MAX] = "/tmp/xattrtest";
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static char script[PATH_MAX] = "/bin/true";
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static char xattrbytes[XATTR_SIZE_MAX];
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static int
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usage(int argc, char **argv)
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{
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fprintf(stderr,
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"usage: %s [-hvycdrRk] [-n <nth>] [-f <files>] [-x <xattrs>]\n"
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" [-s <bytes>] [-p <path>] [-t <script> ] [-o <phase>]\n",
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argv[0]);
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fprintf(stderr,
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" --help -h This help\n"
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" --verbose -v Increase verbosity\n"
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" --verify -y Verify xattr contents\n"
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" --nth -n <nth> Print every nth file\n"
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" --files -f <files> Set xattrs on N files\n"
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" --xattrs -x <xattrs> Set N xattrs on each file\n"
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" --size -s <bytes> Set N bytes per xattr\n"
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" --path -p <path> Path to files\n"
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" --synccaches -c Sync caches between phases\n"
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" --dropcaches -d Drop caches between phases\n"
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" --script -t <script> Exec script between phases\n"
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" --seed -e <seed> Random seed value\n"
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" --random -r Randomly sized xattrs [16-size]\n"
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" --randomvalue -R Random xattr values\n"
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" --keep -k Don't unlink files\n"
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" --only -o <num> Only run phase N\n"
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" 0=all, 1=create, 2=setxattr,\n"
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" 3=getxattr, 4=unlink\n\n");
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return (1);
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}
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static int
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parse_args(int argc, char **argv)
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{
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long seed = time(NULL);
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int c;
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int rc = 0;
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while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) {
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switch (c) {
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case 'h':
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return (usage(argc, argv));
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case 'v':
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verbose++;
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break;
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case 'y':
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verify = 1;
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if (phase != PHASE_ALL) {
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fprintf(stderr,
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"Error: -y and -o are incompatible.\n");
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rc = 1;
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}
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break;
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case 'n':
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nth = strtol(optarg, NULL, 0);
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break;
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case 'f':
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files = strtol(optarg, NULL, 0);
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break;
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case 'x':
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xattrs = strtol(optarg, NULL, 0);
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break;
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case 's':
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size = strtol(optarg, NULL, 0);
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if (size > XATTR_SIZE_MAX) {
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fprintf(stderr, "Error: the -s value may not "
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"be greater than %d\n", XATTR_SIZE_MAX);
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rc = 1;
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}
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break;
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case 'p':
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strncpy(path, optarg, PATH_MAX);
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path[PATH_MAX - 1] = '\0';
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break;
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case 'c':
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synccaches = 1;
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break;
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case 'd':
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dropcaches = 1;
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break;
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case 't':
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strncpy(script, optarg, PATH_MAX);
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script[PATH_MAX - 1] = '\0';
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break;
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case 'e':
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seed = strtol(optarg, NULL, 0);
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break;
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case 'r':
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size_is_random = 1;
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break;
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case 'R':
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value_is_random = 1;
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break;
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case 'k':
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keep_files = 1;
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break;
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case 'o':
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phase = strtol(optarg, NULL, 0);
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if (phase <= PHASE_ALL || phase >= PHASE_INVAL) {
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fprintf(stderr, "Error: the -o value must be "
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"greater than %d and less than %d\n",
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PHASE_ALL, PHASE_INVAL);
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rc = 1;
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}
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if (verify == 1) {
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fprintf(stderr,
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"Error: -y and -o are incompatible.\n");
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rc = 1;
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}
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break;
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default:
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rc = 1;
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break;
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}
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}
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if (rc != 0)
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return (rc);
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srandom(seed);
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if (verbose) {
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fprintf(stdout, "verbose: %d\n", verbose);
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fprintf(stdout, "verify: %d\n", verify);
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fprintf(stdout, "nth: %d\n", nth);
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fprintf(stdout, "files: %d\n", files);
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fprintf(stdout, "xattrs: %d\n", xattrs);
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fprintf(stdout, "size: %d\n", size);
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fprintf(stdout, "path: %s\n", path);
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fprintf(stdout, "synccaches: %d\n", synccaches);
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fprintf(stdout, "dropcaches: %d\n", dropcaches);
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fprintf(stdout, "script: %s\n", script);
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fprintf(stdout, "seed: %ld\n", seed);
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fprintf(stdout, "random size: %d\n", size_is_random);
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fprintf(stdout, "random value: %d\n", value_is_random);
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fprintf(stdout, "keep: %d\n", keep_files);
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fprintf(stdout, "only: %d\n", phase);
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fprintf(stdout, "%s", "\n");
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}
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return (rc);
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}
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static int
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drop_caches(void)
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{
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char file[] = "/proc/sys/vm/drop_caches";
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int fd, rc;
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fd = open(file, O_WRONLY);
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if (fd == -1) {
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ERROR("Error %d: open(\"%s\", O_WRONLY)\n", errno, file);
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return (errno);
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}
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rc = write(fd, "3", 1);
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if ((rc == -1) || (rc != 1)) {
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ERROR("Error %d: write(%d, \"3\", 1)\n", errno, fd);
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(void) close(fd);
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return (errno);
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}
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rc = close(fd);
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if (rc == -1) {
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ERROR("Error %d: close(%d)\n", errno, fd);
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return (errno);
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}
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return (0);
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}
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static int
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run_process(const char *path, char *argv[])
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{
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pid_t pid;
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int rc, devnull_fd;
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pid = vfork();
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if (pid == 0) {
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devnull_fd = open("/dev/null", O_WRONLY);
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if (devnull_fd < 0)
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_exit(-1);
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(void) dup2(devnull_fd, STDOUT_FILENO);
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(void) dup2(devnull_fd, STDERR_FILENO);
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close(devnull_fd);
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(void) execvp(path, argv);
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_exit(-1);
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} else if (pid > 0) {
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int status;
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while ((rc = waitpid(pid, &status, 0)) == -1 &&
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errno == EINTR) { }
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if (rc < 0 || !WIFEXITED(status))
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return (-1);
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return (WEXITSTATUS(status));
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}
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return (-1);
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}
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static int
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post_hook(char *phase)
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{
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char *argv[3] = { script, phase, (char *)0 };
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int rc;
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if (synccaches)
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sync();
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if (dropcaches) {
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rc = drop_caches();
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if (rc)
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return (rc);
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}
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rc = run_process(script, argv);
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if (rc)
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return (rc);
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return (0);
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}
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#define USEC_PER_SEC 1000000
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static void
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timeval_normalize(struct timeval *tv, time_t sec, suseconds_t usec)
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{
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while (usec >= USEC_PER_SEC) {
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usec -= USEC_PER_SEC;
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sec++;
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}
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while (usec < 0) {
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usec += USEC_PER_SEC;
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sec--;
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}
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tv->tv_sec = sec;
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tv->tv_usec = usec;
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}
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static void
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timeval_sub(struct timeval *delta, struct timeval *tv1, struct timeval *tv2)
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{
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timeval_normalize(delta,
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tv1->tv_sec - tv2->tv_sec,
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tv1->tv_usec - tv2->tv_usec);
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}
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static double
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timeval_sub_seconds(struct timeval *tv1, struct timeval *tv2)
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{
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struct timeval delta;
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timeval_sub(&delta, tv1, tv2);
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return ((double)delta.tv_usec / USEC_PER_SEC + delta.tv_sec);
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}
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static int
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create_files(void)
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{
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int i, rc;
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char *file = NULL;
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struct timeval start, stop;
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double seconds;
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file = malloc(PATH_MAX);
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if (file == NULL) {
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rc = ENOMEM;
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ERROR("Error %d: malloc(%d) bytes for file name\n", rc,
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PATH_MAX);
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goto out;
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}
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(void) gettimeofday(&start, NULL);
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for (i = 1; i <= files; i++) {
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(void) sprintf(file, "%s/file-%d", path, i);
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if (nth && ((i % nth) == 0))
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fprintf(stdout, "create: %s\n", file);
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rc = unlink(file);
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if ((rc == -1) && (errno != ENOENT)) {
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ERROR("Error %d: unlink(%s)\n", errno, file);
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rc = errno;
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goto out;
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}
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rc = open(file, O_CREAT, 0644);
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if (rc == -1) {
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ERROR("Error %d: open(%s, O_CREATE, 0644)\n",
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errno, file);
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rc = errno;
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goto out;
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}
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rc = close(rc);
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if (rc == -1) {
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ERROR("Error %d: close(%d)\n", errno, rc);
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rc = errno;
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goto out;
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}
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}
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(void) gettimeofday(&stop, NULL);
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seconds = timeval_sub_seconds(&stop, &start);
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fprintf(stdout, "create: %f seconds %f creates/second\n",
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seconds, files / seconds);
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rc = post_hook("post");
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out:
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if (file)
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free(file);
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return (rc);
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}
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static int
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get_random_bytes(char *buf, size_t bytes)
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{
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int rand;
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ssize_t bytes_read = 0;
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rand = open("/dev/urandom", O_RDONLY);
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if (rand < 0)
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return (rand);
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while (bytes_read < bytes) {
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ssize_t rc = read(rand, buf + bytes_read, bytes - bytes_read);
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if (rc < 0)
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break;
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bytes_read += rc;
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}
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(void) close(rand);
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return (bytes_read);
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}
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static int
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setxattrs(void)
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{
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int i, j, rnd_size = size, shift, rc = 0;
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char name[XATTR_NAME_MAX];
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char *value = NULL;
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char *file = NULL;
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struct timeval start, stop;
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double seconds;
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value = malloc(XATTR_SIZE_MAX);
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if (value == NULL) {
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rc = ENOMEM;
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ERROR("Error %d: malloc(%d) bytes for xattr value\n", rc,
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XATTR_SIZE_MAX);
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goto out;
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}
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file = malloc(PATH_MAX);
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if (file == NULL) {
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rc = ENOMEM;
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ERROR("Error %d: malloc(%d) bytes for file name\n", rc,
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PATH_MAX);
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goto out;
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}
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(void) gettimeofday(&start, NULL);
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for (i = 1; i <= files; i++) {
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(void) sprintf(file, "%s/file-%d", path, i);
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if (nth && ((i % nth) == 0))
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fprintf(stdout, "setxattr: %s\n", file);
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for (j = 1; j <= xattrs; j++) {
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if (size_is_random)
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rnd_size = (random() % (size - 16)) + 16;
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(void) sprintf(name, "user.%d", j);
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shift = sprintf(value, "size=%d ", rnd_size);
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memcpy(value + shift, xattrbytes,
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sizeof (xattrbytes) - shift);
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rc = lsetxattr(file, name, value, rnd_size, 0);
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if (rc == -1) {
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ERROR("Error %d: lsetxattr(%s, %s, ..., %d)\n",
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errno, file, name, rnd_size);
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goto out;
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}
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}
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}
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(void) gettimeofday(&stop, NULL);
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seconds = timeval_sub_seconds(&stop, &start);
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fprintf(stdout, "setxattr: %f seconds %f setxattrs/second\n",
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seconds, (files * xattrs) / seconds);
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rc = post_hook("post");
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out:
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if (file)
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free(file);
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if (value)
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free(value);
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return (rc);
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}
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static int
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getxattrs(void)
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{
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int i, j, rnd_size, shift, rc = 0;
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char name[XATTR_NAME_MAX];
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char *verify_value = NULL;
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char *verify_string;
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char *value = NULL;
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char *value_string;
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char *file = NULL;
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struct timeval start, stop;
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double seconds;
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verify_value = malloc(XATTR_SIZE_MAX);
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if (verify_value == NULL) {
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rc = ENOMEM;
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ERROR("Error %d: malloc(%d) bytes for xattr verify\n", rc,
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XATTR_SIZE_MAX);
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goto out;
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}
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value = malloc(XATTR_SIZE_MAX);
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if (value == NULL) {
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rc = ENOMEM;
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ERROR("Error %d: malloc(%d) bytes for xattr value\n", rc,
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XATTR_SIZE_MAX);
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goto out;
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}
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verify_string = value_is_random ? "<random>" : verify_value;
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value_string = value_is_random ? "<random>" : value;
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file = malloc(PATH_MAX);
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if (file == NULL) {
|
|
rc = ENOMEM;
|
|
ERROR("Error %d: malloc(%d) bytes for file name\n", rc,
|
|
PATH_MAX);
|
|
goto out;
|
|
}
|
|
|
|
(void) gettimeofday(&start, NULL);
|
|
|
|
for (i = 1; i <= files; i++) {
|
|
(void) sprintf(file, "%s/file-%d", path, i);
|
|
|
|
if (nth && ((i % nth) == 0))
|
|
fprintf(stdout, "getxattr: %s\n", file);
|
|
|
|
for (j = 1; j <= xattrs; j++) {
|
|
(void) sprintf(name, "user.%d", j);
|
|
|
|
rc = lgetxattr(file, name, value, XATTR_SIZE_MAX);
|
|
if (rc == -1) {
|
|
ERROR("Error %d: lgetxattr(%s, %s, ..., %d)\n",
|
|
errno, file, name, XATTR_SIZE_MAX);
|
|
goto out;
|
|
}
|
|
|
|
if (!verify)
|
|
continue;
|
|
|
|
sscanf(value, "size=%d [a-z]", &rnd_size);
|
|
shift = sprintf(verify_value, "size=%d ",
|
|
rnd_size);
|
|
memcpy(verify_value + shift, xattrbytes,
|
|
sizeof (xattrbytes) - shift);
|
|
|
|
if (rnd_size != rc ||
|
|
memcmp(verify_value, value, rnd_size)) {
|
|
ERROR("Error %d: verify failed\n "
|
|
"verify: %s\n value: %s\n", EINVAL,
|
|
verify_string, value_string);
|
|
rc = 1;
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
(void) gettimeofday(&stop, NULL);
|
|
seconds = timeval_sub_seconds(&stop, &start);
|
|
fprintf(stdout, "getxattr: %f seconds %f getxattrs/second\n",
|
|
seconds, (files * xattrs) / seconds);
|
|
|
|
rc = post_hook("post");
|
|
out:
|
|
if (file)
|
|
free(file);
|
|
|
|
if (value)
|
|
free(value);
|
|
|
|
if (verify_value)
|
|
free(verify_value);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
static int
|
|
unlink_files(void)
|
|
{
|
|
int i, rc;
|
|
char *file = NULL;
|
|
struct timeval start, stop;
|
|
double seconds;
|
|
|
|
file = malloc(PATH_MAX);
|
|
if (file == NULL) {
|
|
rc = ENOMEM;
|
|
ERROR("Error %d: malloc(%d) bytes for file name\n",
|
|
rc, PATH_MAX);
|
|
goto out;
|
|
}
|
|
|
|
(void) gettimeofday(&start, NULL);
|
|
|
|
for (i = 1; i <= files; i++) {
|
|
(void) sprintf(file, "%s/file-%d", path, i);
|
|
|
|
if (nth && ((i % nth) == 0))
|
|
fprintf(stdout, "unlink: %s\n", file);
|
|
|
|
rc = unlink(file);
|
|
if ((rc == -1) && (errno != ENOENT)) {
|
|
ERROR("Error %d: unlink(%s)\n", errno, file);
|
|
free(file);
|
|
return (errno);
|
|
}
|
|
}
|
|
|
|
(void) gettimeofday(&stop, NULL);
|
|
seconds = timeval_sub_seconds(&stop, &start);
|
|
fprintf(stdout, "unlink: %f seconds %f unlinks/second\n",
|
|
seconds, files / seconds);
|
|
|
|
rc = post_hook("post");
|
|
out:
|
|
if (file)
|
|
free(file);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int rc;
|
|
|
|
rc = parse_args(argc, argv);
|
|
if (rc)
|
|
return (rc);
|
|
|
|
if (value_is_random) {
|
|
size_t rndsz = sizeof (xattrbytes);
|
|
|
|
rc = get_random_bytes(xattrbytes, rndsz);
|
|
if (rc < rndsz) {
|
|
ERROR("Error %d: get_random_bytes() wanted %zd "
|
|
"got %d\n", errno, rndsz, rc);
|
|
return (rc);
|
|
}
|
|
} else {
|
|
memset(xattrbytes, 'x', sizeof (xattrbytes));
|
|
}
|
|
|
|
if (phase == PHASE_ALL || phase == PHASE_CREATE) {
|
|
rc = create_files();
|
|
if (rc)
|
|
return (rc);
|
|
}
|
|
|
|
if (phase == PHASE_ALL || phase == PHASE_SETXATTR) {
|
|
rc = setxattrs();
|
|
if (rc)
|
|
return (rc);
|
|
}
|
|
|
|
if (phase == PHASE_ALL || phase == PHASE_GETXATTR) {
|
|
rc = getxattrs();
|
|
if (rc)
|
|
return (rc);
|
|
}
|
|
|
|
if (!keep_files && (phase == PHASE_ALL || phase == PHASE_UNLINK)) {
|
|
rc = unlink_files();
|
|
if (rc)
|
|
return (rc);
|
|
}
|
|
|
|
return (0);
|
|
}
|