4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
34 #define _GNU_SOURCE /* pull in O_DIRECTORY in bits/fcntl.h */
41 #include <sys/types.h>
45 #include <sys/ioctl.h>
46 #include <sys/xattr.h>
51 #include <semaphore.h>
55 #include <lustre/lustreapi.h>
57 #define T1 "write data before unlink\n"
58 #define T2 "write data after unlink\n"
59 char msg[] = "yabba dabba doo, I'm coming for you, I live in a shoe, I don't know what to do.\n'Bigger, bigger,and bigger yet!' cried the Creator. 'You are not yet substantial enough for my boundless intents!' And ever greater and greater the object became, until all was lost 'neath its momentus bulk.\n";
60 char *buf, *buf_align;
63 #define ALIGN_LEN 65535
64 #define XATTR "user.multiop"
67 "Usage: %s filename command-sequence [path...]\n"
68 " command-sequence items:\n"
69 " A fsetxattr(\"user.multiop\")\n"
70 " a fgetxattr(\"user.multiop\")\n"
72 " B[num] call setstripe ioctl to create stripes\n"
73 " C[num] create with optional stripes\n"
75 " D open(O_DIRECTORY)\n"
76 " e[R|W|U] apply lease. R: Read; W: Write; U: Unlock\n"
77 " E[+|-] get lease. +/-: expect lease to (not) exist\n"
80 " H[num] create HSM released file with num stripes\n"
81 " G gid get grouplock\n"
82 " g gid put grouplock\n"
83 " K link path to filename\n"
85 " l symlink filename to path\n"
87 " M rw mmap to EOF (must open and stat prior)\n"
88 " n rename path to filename\n"
89 " N rename filename to path\n"
91 " O open(O_CREAT|O_RDWR)\n"
92 " r[num] read [optional length]\n"
93 " R reference entire mmap-ed region\n"
97 " T[num] ftruncate [optional position, default 0]\n"
101 " V open a volatile file\n"
102 " w[num] write optional length\n"
103 " x get file data version\n"
104 " W write entire mmap-ed region\n"
107 " z[num] seek [optional position, default 0]\n"
108 " _ wait for signal\n";
110 void usr1_handler(int unused)
112 int saved_errno = errno;
115 * signal(7): POSIX.1-2004 ...requires an implementation to guarantee
116 * that the following functions can be safely called inside a signal
126 pop_arg(int argc, char *argv[])
128 static int cur_arg = 3;
133 return argv[cur_arg++];
136 struct flag_mapping {
140 {"O_RDONLY", O_RDONLY},
141 {"O_WRONLY", O_WRONLY},
143 {"O_CREAT", O_CREAT},
145 {"O_NOCTTY", O_NOCTTY},
146 {"O_TRUNC", O_TRUNC},
147 {"O_APPEND", O_APPEND},
148 {"O_NONBLOCK", O_NONBLOCK},
149 {"O_NDELAY", O_NDELAY},
152 {"O_DIRECT", O_DIRECT},
155 {"O_NOATIME", O_NOATIME},
157 {"O_LARGEFILE", O_LARGEFILE},
158 {"O_DIRECTORY", O_DIRECTORY},
159 {"O_NOFOLLOW", O_NOFOLLOW},
160 {"O_LOV_DELAY_CREATE", O_LOV_DELAY_CREATE},
164 int get_flags(char *data, int *rflags)
172 cloned_flags = strdup(data);
173 if (cloned_flags == NULL) {
174 fprintf(stderr, "Insufficient memory.\n");
178 for (tmp = strtok(cloned_flags, ":"); tmp;
179 tmp = strtok(NULL, ":")) {
182 size = tmp - cloned_flags;
183 for (i = 0; flag_table[i].flag != -1; i++) {
184 if (!strcmp(tmp, flag_table[i].string)){
185 flags |= flag_table[i].flag;
186 size += strlen(flag_table[i].string);
203 #define POP_ARG() (pop_arg(argc, argv))
205 int main(int argc, char **argv)
207 char *fname, *commands;
212 size_t mmap_len = 0, i;
213 unsigned char *mmap_ptr = NULL, junk = 0;
214 int rc, len, fd = -1;
221 struct lov_user_md_v3 lum;
225 fprintf(stderr, usage, argv[0]);
229 memset(&st, 0, sizeof(st));
230 sem_init(&sem, 0, 0);
231 /* use sigaction instead of signal to avoid SA_ONESHOT semantics */
232 sigaction(SIGUSR1, &(const struct sigaction){.sa_handler = &usr1_handler},
237 for (commands = argv[2]; *commands; commands++) {
244 len = atoi(commands+1);
246 len = 3600; /* 1 hour */
247 ts.tv_sec = time(NULL) + len;
249 while (sem_timedwait(&sem, &ts) < 0 && errno == EINTR);
252 if (fsetxattr(fd, XATTR, "multiop", 8, 0)) {
259 if (fgetxattr(fd, XATTR, NULL, 0) == -1) {
266 if (close(fd) == -1) {
274 lum = (struct lov_user_md_v3) {
275 .lmm_magic = LOV_USER_MAGIC_V3,
276 .lmm_stripe_count = atoi(commands + 1),
279 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, &lum) < 0) {
281 perror("LL_IOC_LOV_SETSTRIPE");
286 len = atoi(commands+1);
287 fd = llapi_file_open(fname, O_CREAT | O_WRONLY, 0644,
291 perror("create stripe file");
296 if (mkdir(fname, 0755) == -1) {
298 perror("mkdir(0755)");
303 fd = open(fname, O_DIRECTORY);
306 perror("open(O_DIRECTORY)");
314 flags = LL_LEASE_UNLCK;
317 flags = LL_LEASE_RDLCK;
320 flags = LL_LEASE_WRLCK;
323 errx(-1, "unknown mode: %c", *commands);
326 rc = ioctl(fd, LL_IOC_SET_LEASE, flags);
328 err(errno, "apply lease error");
330 if (flags != LL_LEASE_UNLCK)
333 /* F_UNLCK, interpret return code */
335 const char *str = "unknown";
336 if (rc == LL_LEASE_RDLCK)
338 else if (rc == LL_LEASE_WRLCK)
340 fprintf(stdout, "%s lease(%d) released.\n",
342 } else if (rc == 0) {
343 fprintf(stdout, "lease already broken.\n");
348 if (*commands != '-' && *commands != '+')
349 errx(-1, "unknown mode: %c\n", *commands);
351 rc = ioctl(fd, LL_IOC_GET_LEASE);
353 const char *str = "unknown";
355 if (rc == LL_LEASE_RDLCK)
357 else if (rc == LL_LEASE_WRLCK)
359 fprintf(stdout, "%s lease(%d) has applied.\n",
361 if (*commands == '-')
362 errx(-1, "expect lease to not exist");
363 } else if (rc == 0) {
364 fprintf(stdout, "no lease applied.\n");
365 if (*commands == '+')
366 errx(-1, "expect lease exists");
368 err(errno, "free lease error");
372 if (statfs(fname, &stfs) == -1)
373 errx(-1, "statfs()");
377 rc = llapi_path2fid(fname, &fid);
379 rc = llapi_fd2fid(fd, &fid);
382 "llapi_path/fd2fid() on %d, rc=%d\n",
385 printf(DFID"\n", PFID(&fid));
388 gid = atoi(commands+1);
389 if (ioctl(fd, LL_IOC_GROUP_LOCK, gid) == -1) {
391 perror("ioctl(GROUP_LOCK)");
396 gid = atoi(commands+1);
397 if (ioctl(fd, LL_IOC_GROUP_UNLOCK, gid) == -1) {
399 perror("ioctl(GROUP_UNLOCK)");
404 len = atoi(commands+1);
405 fd = llapi_file_open(fname, O_CREAT | O_WRONLY,
407 LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED);
410 perror("create stripe file");
415 if (flock(fd, LOCK_EX) == -1)
423 if (link(oldpath, fname)) {
433 if (symlink(fname, newfile)) {
444 if (link(fname, newfile)) {
451 if (mknod(fname, S_IFREG | 0644, 0) == -1) {
453 perror("mknod(S_IFREG|0644, 0)");
458 if (st.st_size == 0) {
459 fprintf(stderr, "mmap without preceeding stat, or on"
460 " zero length file.\n");
463 mmap_len = st.st_size;
464 mmap_ptr = mmap(NULL, mmap_len, PROT_WRITE | PROT_READ,
466 if (mmap_ptr == MAP_FAILED) {
477 if (rename(oldpath, fname) < 0) {
487 if (rename (fname, newfile)) {
494 fd = open(fname, O_CREAT|O_RDWR, 0644);
497 perror("open(O_RDWR|O_CREAT)");
502 len = get_flags(commands+1, &flags);
505 fd = open(fname, flags, 0666);
507 fd = open(fname, flags);
515 len = atoi(commands+1);
520 tmp = realloc(buf, len + ALIGN_LEN);
524 perror("allocating buf for read\n");
529 buf_align = (char *)((long)(buf + ALIGN_LEN) &
533 rc = read(fd, buf_align, len);
540 fprintf(stderr, "short read: %u/%u\n",
547 printf("%.*s\n", rc, buf_align);
551 for (i = 0; i < mmap_len && mmap_ptr; i += 4096)
555 if (stat(fname, &st) == -1) {
562 if (fstat(fd, &st) == -1) {
569 if (fchmod(fd, 0) == -1) {
576 len = atoi(commands+1);
577 if (ftruncate(fd, len) == -1) {
579 printf("ftruncate (%d,%d)\n", fd, len);
585 if (unlink(fname) == -1) {
592 if (munmap(mmap_ptr, mmap_len)) {
602 len = get_flags(commands + 1, &flags);
604 fd = llapi_create_volatile(fname, flags);
606 perror("llapi_create_volatile");
611 len = atoi(commands+1);
616 tmp = realloc(buf, len + ALIGN_LEN);
620 perror("allocating buf for write\n");
625 buf_align = (char *)((long)(buf + ALIGN_LEN) &
627 strncpy(buf_align, msg, bufsize);
630 rc = write(fd, buf_align, len);
637 fprintf(stderr, "short write: %u/%u\n",
643 for (i = 0; i < mmap_len && mmap_ptr; i += 4096)
644 mmap_ptr[i] += junk++;
647 rc = llapi_get_data_version(fd, &dv, 0);
649 fprintf(stderr, "cannot get file data version"
653 printf("dataversion is %ju\n", (uintmax_t)dv);
656 if (fsync(fd) == -1) {
663 if (fdatasync(fd) == -1) {
670 len = atoi(commands+1);
671 if (lseek(fd, len, SEEK_SET) == -1) {
690 fprintf(stderr, "unknown command \"%c\"\n", *commands);
691 fprintf(stderr, usage, argv[0]);