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xfstests: add test 185, Dmapi Punch/Probe Alignment compared to xfsctl(FREESPACE),
tests PV 976771, by trying to punch a hole that's not page aligned but block aligned Merge of master-melb:xfs-cmds:30582a by kenmcd. New QA test
This commit is contained in:
Niv Sardi
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/*
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* Copyright (c) 2000-2001 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <lib/hsm.h>
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#include <getopt.h>
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#include <string.h>
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/*---------------------------------------------------------------------------
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Test program used to test the DMAPI function dm_probe_hole(). The
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command line is:
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probe_hole [-o offset] [-l length] [-s sid] pathname
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where pathname is the name of a file, offset is the offset of the start of
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the proposed punch, and length is the length of the punch. sid is the
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session ID whose events you you are interested in.
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----------------------------------------------------------------------------*/
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#ifndef linux
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extern char *sys_errlist[];
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#endif
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extern int optind;
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extern char *optarg;
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char *Progname;
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#define METHOD_DMAPI_PROBE 0
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#define METHOD_DMAPI_PUNCH 1
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#define METHOD_XFSCTL 2
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char *methodmap[] = {"DMAPI probe hole",
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"DMAPI punch hole",
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"Punch hole with xfsctl(XFS_IOC_FREESP64)"};
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static void
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usage(void)
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{
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fprintf(stderr, "usage:\t%s [-x|-p] [-o offset] [-l length] "
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"[-s sid] pathname\n", Progname);
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exit(1);
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}
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int
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xfsctl_punch_hole(
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char *path,
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dm_off_t offset,
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dm_size_t length)
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{
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xfs_flock64_t flock;
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int fd;
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if ((fd = open(path, O_RDWR|O_CREAT)) < 0) {
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perror(path);
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exit(errno);
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}
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flock.l_whence = 0;
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flock.l_start = offset;
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flock.l_len = length;
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if (xfsctl(path, fd, XFS_IOC_FREESP64, &flock)) {
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fprintf(stderr, "can't XFS_IOC_FREESP64 %s: %s\n",
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path, strerror(errno));
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return errno;
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}
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close(fd);
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printf("ok.\n");
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return 0;
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}
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int
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main(
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int argc,
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char **argv)
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{
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dm_sessid_t sid = DM_NO_SESSION;
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char *pathname = NULL;
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dm_off_t offset = 0;
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dm_size_t length = 0;
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dm_off_t roffp;
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dm_size_t rlenp;
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void *hanp;
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size_t hlen;
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char *name;
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char *p;
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int opt;
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int method = METHOD_DMAPI_PROBE;
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if (Progname = strrchr(argv[0], '/')) {
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Progname++;
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} else {
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Progname = argv[0];
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}
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/* Crack and validate the command line options. */
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while ((opt = getopt(argc, argv, "o:l:s:xp")) != EOF) {
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switch (opt) {
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case 'o':
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offset = strtoll(optarg, &p, 10);
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if (p && (*p == 'k' || *p == 'K'))
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offset *= 1024;
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break;
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case 'l':
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length = strtoll(optarg, &p, 10);
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if (p && (*p == 'k' || *p == 'K'))
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length *= 1024;
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break;
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case 's':
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sid = atol(optarg);
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break;
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case 'x':
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method = METHOD_XFSCTL;
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break;
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case 'p':
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method = METHOD_DMAPI_PUNCH;
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break;
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case '?':
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usage();
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}
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}
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if (optind + 1 != argc)
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usage();
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pathname = argv[optind];
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if (!pathname)
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usage();
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printf("Running %s on %s with settings:\n", methodmap[method], pathname);
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printf(" offset = '%lld', length = '%lld', sid = '%lld'\n", offset, length, sid);
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if (method == METHOD_XFSCTL)
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return xfsctl_punch_hole(pathname, offset, length);
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if (dm_init_service(&name) == -1) {
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fprintf(stderr, "Can't initialize the DMAPI\n");
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exit(1);
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}
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if (sid == DM_NO_SESSION)
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find_test_session(&sid);
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/* Get the file's handle. */
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if (dm_path_to_handle(pathname, &hanp, &hlen)) {
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fprintf(stderr, "can't get handle for file %s\n", pathname);
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exit(1);
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}
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switch(method) {
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case METHOD_DMAPI_PROBE:
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if (dm_probe_hole(sid, hanp, hlen, DM_NO_TOKEN, offset, length,
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&roffp, &rlenp)) {
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fprintf(stderr, "dm_probe_hole failed, %s\n",
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strerror(errno));
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exit(1);
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}
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break;
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case METHOD_DMAPI_PUNCH:
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if (dm_punch_hole(sid, hanp, hlen, DM_NO_TOKEN, offset, length)) {
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fprintf(stderr, "dm_punch_hole failed, %s\n",
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strerror(errno));
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exit(1);
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}
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break;
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}
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fprintf(stdout, "roffp is %lld, rlenp is %lld\n", roffp, rlenp);
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dm_handle_free(hanp, hlen);
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return 0;
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}
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