/* $NetBSD: fssconfig.c,v 1.5 2005/04/17 16:28:26 hannken Exp $ */ /*- * Copyright (c) 2003 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Juergen Hannken-Illjes. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include int vflag = 0; int xflag = 0; void config(int, char **); void unconfig(int, char **); void list(int, char **); void usage(void); int main(int argc, char **argv) { int ch; void (*action)(int, char **); action = config; while ((ch = getopt(argc, argv, "cluvx")) != -1) { switch (ch) { case 'c': action = config; break; case 'l': action = list; break; case 'u': action = unconfig; break; case 'v': vflag++; break; case 'x': xflag++; break; default: case '?': usage(); /* NOTREACHED */ } } argc -= optind; argv += optind; (*action)(argc, argv); exit(0); } void config(int argc, char **argv) { int fd, isreg, istmp, ispersistent; char full[64], path[MAXPATHLEN]; off_t bssize; dev_t mountdev; struct stat sbuf; struct statvfs fsbuf; struct fss_set fss; if (argc < 3) usage(); istmp = ispersistent = 0; fss.fss_mount = argv[1]; fss.fss_bstore = argv[2]; if (statvfs(argv[1], &fsbuf) != 0 || stat(argv[1], &sbuf) != 0) err(1, "stat %s", argv[1]); mountdev = sbuf.st_dev; if (stat(argv[2], &sbuf) == 0 && S_ISREG(sbuf.st_mode) && sbuf.st_dev == mountdev) { if ((sbuf.st_flags & SF_SNAPSHOT) == 0) errx(1, "%s: exists and is not a snapshot", argv[2]); if (argc != 3) usage(); isreg = ispersistent = 1; goto configure; } if (argc > 5) usage(); if (argc > 3) fss.fss_csize = strsuftoll("cluster size", argv[3], 0, INT_MAX); else fss.fss_csize = 0; if (argc > 4) bssize = strsuftoll("bs size", argv[4], 0, LLONG_MAX); else bssize = (off_t)fsbuf.f_blocks*fsbuf.f_frsize; /* * Create the backing store. If it is a directory, create a temporary * file and set the unlink flag. */ if ((fd = open(fss.fss_bstore, O_CREAT|O_TRUNC|O_WRONLY, 0600)) < 0) { if (errno != EISDIR) err(1, "create: %s", fss.fss_bstore); snprintf(path, sizeof(path), "%s/XXXXXXXXXX", fss.fss_bstore); if ((fd = mkstemp(path)) < 0) err(1, "mkstemp: %s", path); fss.fss_bstore = path; istmp = 1; } if (fstat(fd, &sbuf) < 0) err(1, "stat: %s", fss.fss_bstore); if (!ispersistent && sbuf.st_dev == mountdev) ispersistent = 1; isreg = S_ISREG(sbuf.st_mode); if (!ispersistent && isreg && ftruncate(fd, bssize) < 0) err(1, "truncate %s", fss.fss_bstore); close(fd); configure: if ((fd = opendisk(argv[0], O_RDWR, full, sizeof(full), 0)) < 0) { if (istmp) unlink(fss.fss_bstore); err(1, "open: %s", argv[0]); } if (ioctl(fd, FSSIOCSET, &fss) < 0) { if (istmp) unlink(fss.fss_bstore); err(1, "%s: FSSIOCSET", full); } if ((xflag || istmp) && isreg && unlink(fss.fss_bstore) < 0) err(1, "unlink: %s", fss.fss_bstore); if (vflag) list(1, argv); } void unconfig(int argc, char **argv) { int fd; char full[64]; if (argc != 1) usage(); if (vflag) list(1, argv); if ((fd = opendisk(argv[0], O_RDWR, full, sizeof(full), 0)) < 0) err(1, "open: %s", argv[0]); if (ioctl(fd, FSSIOCCLR) < 0) err(1, "%s: FSSIOCCLR", full); } void list(int argc, char **argv) { int n, fd, flags; char *dev, path[64], full[64]; char clbuf[5], bsbuf[5], tmbuf[64]; time_t t; struct fss_get fsg; if (argc > 1) usage(); if (argc > 0) dev = argv[0]; else dev = path; for (n = 0; ; n++) { if (argc == 0) snprintf(path, sizeof(path), "fss%d", n); if ((fd = opendisk(dev, O_RDONLY, full, sizeof(full), 0)) < 0) { if (argc == 0 && (errno == ENOENT || errno == ENXIO)) break; err(1, "open: %s", dev); } if (ioctl(fd, FSSIOFGET, &flags) < 0) flags = 0; if (ioctl(fd, FSSIOCGET, &fsg) < 0) { if (errno == ENXIO) printf("%s: not in use\n", dev); else err(1, "%s: FSSIOCGET", full); } else if (vflag) { humanize_number(clbuf, sizeof(clbuf), (int64_t)fsg.fsg_csize, "", HN_AUTOSCALE, HN_B|HN_NOSPACE); humanize_number(bsbuf, sizeof(bsbuf), (int64_t)fsg.fsg_bs_size*fsg.fsg_csize, "", HN_AUTOSCALE, HN_B|HN_NOSPACE); t = fsg.fsg_time.tv_sec; strftime(tmbuf, sizeof(tmbuf), "%F %T", localtime(&t)); printf("%s: %s, taken %s", dev, fsg.fsg_mount, tmbuf); if ((flags & FSS_UNCONFIG_ON_CLOSE) != 0) printf(", unconfig on close"); if (fsg.fsg_csize == 0) printf(", file system internal\n"); else printf(", %"PRId64" cluster of %s, %s backup\n", fsg.fsg_mount_size, clbuf, bsbuf); } else printf("%s: %s\n", dev, fsg.fsg_mount); close(fd); if (argc > 0) break; } } void usage(void) { fprintf(stderr, "%s", "usage: fssconfig [-cxv] device path backup [cluster [size]]\n" " fssconfig -u [-v] device\n" " fssconfig -l [-v] [device]\n"); exit(1); }