/* $NetBSD: quotaon.c,v 1.30.34.1 2022/04/27 16:53:32 martin Exp $ */ /* * Copyright (c) 1980, 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Robert Elz at The University of Melbourne. * * 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. Neither the name of the University 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 REGENTS 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 REGENTS 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 #ifndef lint __COPYRIGHT("@(#) Copyright (c) 1980, 1990, 1993\ The Regents of the University of California. All rights reserved."); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)quotaon.c 8.1 (Berkeley) 6/6/93"; #else __RCSID("$NetBSD: quotaon.c,v 1.30.34.1 2022/04/27 16:53:32 martin Exp $"); #endif #endif /* not lint */ /* * Turn quota on/off for a filesystem. */ #include #include #include #include #include #include #include #include #include #include #include #include #include static int vflag; /* verbose */ static void usage(void) __dead; static int quotaonoff(struct fstab *, struct quotahandle *, int, int, int, const char *); static int readonly(struct fstab *, const char *); static int oneof(const char *target, char *list[], int cnt); int main(int argc, char *argv[]) { struct fstab *fs; struct quotahandle *qh; long argnum, done = 0; int i, offmode = 0, errs = 0; unsigned restrictions; int ch; int aflag = 0; /* all file systems */ int gflag = 0; /* operate on group quotas */ int uflag = 0; /* operate on user quotas */ int noguflag = 0; /* operate on both (by default) */ if (strcmp(getprogname(), "quotaoff") == 0) offmode++; else if (strcmp(getprogname(), "quotaon") != 0) errx(1, "Name must be quotaon or quotaoff"); while ((ch = getopt(argc, argv, "avug")) != -1) { switch(ch) { case 'a': aflag++; break; case 'g': gflag++; break; case 'u': uflag++; break; case 'v': vflag++; break; default: usage(); break; } } argc -= optind; argv += optind; if (argc <= 0 && !aflag) usage(); if (!gflag && !uflag) { noguflag = 1; } /* * XXX at the moment quota_open also uses getfsent(), but it * uses it only up front. To avoid conflicting with it, let it * initialize first. */ qh = quota_open("/"); if (qh != NULL) { quota_close(qh); } setfsent(); while ((fs = getfsent()) != NULL) { char buf[MAXPATHLEN]; const char *fsspec; if ((strcmp(fs->fs_vfstype, "ffs") && strcmp(fs->fs_vfstype, "lfs")) || strcmp(fs->fs_type, FSTAB_RW)) continue; fsspec = getfsspecname(buf, sizeof(buf), fs->fs_spec); if (fsspec == NULL) { warn("%s", buf); continue; } if (!aflag) { if ((argnum = oneof(fs->fs_file, argv, argc)) < 0 && (argnum = oneof(fsspec, argv, argc)) < 0) { continue; } done |= 1U << argnum; } qh = quota_open(fs->fs_file); if (qh == NULL) { if (!aflag) { warn("quota_open"); errs++; } continue; } restrictions = quota_getrestrictions(qh); if ((restrictions & QUOTA_RESTRICT_NEEDSQUOTACHECK) == 0) { /* Not a quota v1 volume, skip it */ if (!aflag) { errno = EBUSY; warn("%s", fs->fs_file); errs++; } quota_close(qh); continue; } /* * The idea here is to warn if someone explicitly * tries to turn on group quotas and there are no * group quotas, and likewise for user quotas, but not * to warn if just doing the default thing and one of * the quota types isn't configured. */ if (noguflag) { errs += quotaonoff(fs, qh, offmode, GRPQUOTA, 0, fsspec); errs += quotaonoff(fs, qh, offmode, USRQUOTA, 0, fsspec); } if (gflag) { errs += quotaonoff(fs, qh, offmode, GRPQUOTA, 1, fsspec); } if (uflag) { errs += quotaonoff(fs, qh, offmode, USRQUOTA, 1, fsspec); } quota_close(qh); } endfsent(); for (i = 0; i < argc; i++) if ((done & (1U << i)) == 0) warnx("%s not found in fstab", argv[i]); return errs; } static void usage(void) { const char *p = getprogname(); (void) fprintf(stderr, "Usage: %s [-g] [-u] [-v] -a\n" "\t%s [-g] [-u] [-v] filesys ...\n", p, p); exit(1); } static int quotaonoff(struct fstab *fs, struct quotahandle *qh, int offmode, int idtype, int warn_on_enxio, const char *fsspec) { const char *mode = (offmode == 1) ? "off" : "on"; const char *type; if (strcmp(fs->fs_file, "/") && readonly(fs, fsspec)) { return 1; } if (offmode) { type = quota_idtype_getname(qh, idtype); if (quota_quotaoff(qh, idtype)) { if (warn_on_enxio || errno != ENXIO) { warn("quota%s for %s", mode, fs->fs_file); } return 1; } } else { if (quota_quotaon(qh, idtype)) { if (warn_on_enxio || errno != ENXIO) { warn("quota%s for %s", mode, fs->fs_file); } return 1; } type = quota_idtype_getname(qh, idtype); } if (vflag) { printf("%s: %s quotas turned %s\n", fs->fs_file, type, mode); } return 0; } /* * Verify file system is mounted and not readonly. */ static int readonly(struct fstab *fs, const char *fsspec) { struct statvfs fsbuf; if (statvfs(fs->fs_file, &fsbuf) < 0 || strcmp(fsbuf.f_mntonname, fs->fs_file) || strcmp(fsbuf.f_mntfromname, fsspec)) { printf("%s: not mounted\n", fs->fs_file); return 1; } if (fsbuf.f_flag & MNT_RDONLY) { printf("%s: mounted read-only\n", fs->fs_file); return 1; } return 0; } /* * Check to see if target appears in list of size cnt. */ static int oneof(const char *target, char *list[], int cnt) { int i; for (i = 0; i < cnt; i++) if (strcmp(target, list[i]) == 0) return i; return -1; }