diff options
Diffstat (limited to 'diskdev_cmds/edquota.tproj/edquota.c')
| -rw-r--r-- | diskdev_cmds/edquota.tproj/edquota.c | 1228 |
1 files changed, 1228 insertions, 0 deletions
diff --git a/diskdev_cmds/edquota.tproj/edquota.c b/diskdev_cmds/edquota.tproj/edquota.c new file mode 100644 index 0000000..6dad1cb --- /dev/null +++ b/diskdev_cmds/edquota.tproj/edquota.c @@ -0,0 +1,1228 @@ +/* + * Copyright (c) 2002-2005 Apple Computer, Inc. All rights reserved. + * + * @APPLE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this + * file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_LICENSE_HEADER_END@ + */ +/* + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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 <sys/cdefs.h> + +#ifndef lint +__unused static char copyright[] = +"@(#) Copyright (c) 1980, 1990, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +__unused static char sccsid[] = "@(#)edquota.c 8.3 (Berkeley) 4/27/95"; +#endif /* not lint */ + +/* + * Disk quota editor. + */ +#include <sys/param.h> +#include <sys/stat.h> +#include <sys/file.h> +#ifdef __APPLE__ +#include <sys/mount.h> +#endif /* __APPLE__ */ +#include <sys/wait.h> +#include <sys/queue.h> +#include <sys/quota.h> +#include <errno.h> +#include <fstab.h> +#include <pwd.h> +#include <grp.h> +#include <ctype.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <signal.h> +#include "pathnames.h" + +#ifdef __APPLE__ +#include <libkern/OSByteOrder.h> +#endif /* __APPLE__ */ + +char *qfname = QUOTAFILENAME; +char *qfextension[] = INITQFNAMES; +char *quotagroup = QUOTAGROUP; +char tmpfil[] = _PATH_TMP; + +#ifdef __APPLE__ +u_int32_t quotamagic[MAXQUOTAS] = INITQMAGICS; +#endif /* __APPLE__ */ + +struct quotause { + struct quotause *next; + long flags; + struct dqblk dqblk; + char fsname[MAXPATHLEN + 1]; + char qfname[1]; /* actually longer */ +} *getprivs(); +#define FOUND 0x01 + +int alldigits __P((char *)); +int cvtatos __P((time_t, char *, time_t *)); +int editit __P((char *)); +void freeprivs __P((struct quotause *)); +int getentry __P((char *, int)); +int hasquota __P((struct statfs *, int, char **)); +void putprivs __P((uid_t, int, struct quotause *)); +int readprivs __P((struct quotause *, int)); +int readtimes __P((struct quotause *, int)); +void usage __P((void)); +int writeprivs __P((struct quotause *, int, char *, int)); +int writetimes __P((struct quotause *, int, int)); + +#ifdef __APPLE__ +int qfinit(int, struct statfs *, int); +int qflookup(int, uid_t, int, struct dqblk *); +int qfupdate(int, uid_t, int, struct dqblk *); +#endif /* __APPLE__ */ + + +int +main(argc, argv) + register char **argv; + int argc; +{ + register struct quotause *qup, *protoprivs, *curprivs; + extern char *optarg; + extern int optind; + register uid_t id, protoid; + register int quotatype, tmpfd; + char *protoname = NULL, ch; + int tflag = 0, pflag = 0; + + if (argc < 2) + usage(); + if (getuid()) { + fprintf(stderr, "edquota: permission denied\n"); + exit(1); + } + quotatype = USRQUOTA; + + while ((ch = getopt(argc, argv, "ugtp:")) != EOF) { + switch(ch) { + case 'p': + protoname = optarg; + pflag++; + break; + case 'g': + quotatype = GRPQUOTA; + break; + case 'u': + quotatype = USRQUOTA; + break; + case 't': + tflag++; + break; + default: + usage(); + } + } + argc -= optind; + argv += optind; + if (pflag) { + if ((protoid = getentry(protoname, quotatype)) == -1) + exit(1); + protoprivs = getprivs(protoid, quotatype); +#ifdef __APPLE__ + if (protoprivs == (struct quotause *) NULL) + exit(0); +#endif /* __APPLE__ */ + for (qup = protoprivs; qup; qup = qup->next) { + qup->dqblk.dqb_btime = 0; + qup->dqblk.dqb_itime = 0; + } + while (argc-- > 0) { + if ((id = getentry(*argv++, quotatype)) == -1) + continue; + /* + * Set the ID in each disk quota block to match + * the ID it's supposed to go with. + */ + for (qup = protoprivs; qup; qup = qup->next) { + qup->dqblk.dqb_id = id; + } + putprivs(id, quotatype, protoprivs); + } + exit(0); + } + tmpfd = mkstemp(tmpfil); + fchown(tmpfd, getuid(), getgid()); + if (tflag) { + protoprivs = getprivs(0, quotatype); +#ifdef __APPLE__ + if (protoprivs == (struct quotause *) NULL) + exit(0); +#endif /* __APPLE__ */ + if (writetimes(protoprivs, tmpfd, quotatype) == 0) + exit(1); + if (editit(tmpfil)) { + /* + * Re-open tmpfil to be editor independent. + */ + close(tmpfd); + tmpfd = open(tmpfil, O_RDWR, 0); + if (tmpfd < 0) { + freeprivs(protoprivs); + unlink(tmpfil); + exit(1); + } + if (readtimes(protoprivs, tmpfd)) + putprivs(0, quotatype, protoprivs); + } + freeprivs(protoprivs); + exit(0); + } + for ( ; argc > 0; argc--, argv++) { + if ((id = getentry(*argv, quotatype)) == -1) + continue; + curprivs = getprivs(id, quotatype); +#ifdef __APPLE__ + if (curprivs == (struct quotause *) NULL) + exit(0); +#endif /* __APPLE__ */ + + + if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0) { + freeprivs(curprivs); + continue; + } + if (editit(tmpfil)) { + /* + * Re-open tmpfil to be editor independent. + */ + close(tmpfd); + tmpfd = open(tmpfil, O_RDWR, 0); + if (tmpfd < 0) { + freeprivs(curprivs); + unlink(tmpfil); + exit(1); + } + if (readprivs(curprivs, tmpfd)) + putprivs(id, quotatype, curprivs); + } + freeprivs(curprivs); + } + close(tmpfd); + unlink(tmpfil); + exit(0); +} + +void +usage() +{ + fprintf(stderr, "%s%s%s%s", + "Usage: edquota [-u] [-p username] username ...\n", + "\tedquota -g [-p groupname] groupname ...\n", + "\tedquota [-u] -t\n", "\tedquota -g -t\n"); +#ifdef __APPLE__ + fprintf(stderr, "\nQuota file editing triggers only on filesystems with a\n"); + fprintf(stderr, "%s.%s or %s.%s file located at its root.\n", + QUOTAOPSNAME, qfextension[USRQUOTA], + QUOTAOPSNAME, qfextension[GRPQUOTA]); +#endif /* __APPLE__ */ + exit(1); +} + +/* + * This routine converts a name for a particular quota type to + * an identifier. This routine must agree with the kernel routine + * getinoquota as to the interpretation of quota types. + */ +int +getentry(name, quotatype) + char *name; + int quotatype; +{ + struct passwd *pw; + struct group *gr; + + if (alldigits(name)) + return (atoi(name)); + switch(quotatype) { + case USRQUOTA: + if ((pw = getpwnam(name)) != NULL) + return (pw->pw_uid); + fprintf(stderr, "%s: no such user\n", name); + break; + case GRPQUOTA: + if ((gr = getgrnam(name))) + return (gr->gr_gid); + fprintf(stderr, "%s: no such group\n", name); + break; + default: + fprintf(stderr, "%d: unknown quota type\n", quotatype); + break; + } + sleep(1); + return (-1); +} + +/* + * Collect the requested quota information. + */ +#ifdef __APPLE__ +struct quotause * +getprivs(id, quotatype) + register uid_t id; + int quotatype; +{ + struct statfs *fst; + register struct quotause *qup, *quptail; + struct quotause *quphead; + int qcmd, fd; + size_t qupsize; + char *qfpathname; + size_t qfpathname_len; + static int warned = 0; + int nfst, i; + extern int errno; + + + quptail = quphead = (struct quotause *)0; + qcmd = QCMD(Q_GETQUOTA, quotatype); + + nfst = getmntinfo(&fst, MNT_WAIT); + if (nfst==0) { + fprintf(stderr, "edquota: no mounted filesystems\n"); + exit(1); + } + + for (i=0; i<nfst; i++) { + if (strcmp(fst[i].f_fstypename, "hfs")) { + continue; + } + if (!hasquota(&fst[i], quotatype, &qfpathname)) + continue; + qfpathname_len = strlen(qfpathname); + qupsize = sizeof(*qup) + qfpathname_len; + if ((qup = (struct quotause *)malloc(qupsize)) == NULL) { + fprintf(stderr, "edquota: out of memory\n"); + exit(2); + } + if (quotactl(fst[i].f_mntonname, qcmd, id, (char *)&qup->dqblk) != 0) { + if (errno == ENOTSUP && !warned) { + warned++; + fprintf(stderr, "Warning: %s\n", + "Quotas are not compiled into this kernel"); + sleep(3); + } + if ((fd = open(qfpathname, O_RDONLY)) < 0) { + fd = open(qfpathname, O_RDWR|O_CREAT, 0640); + if (fd < 0 && errno != ENOENT) { + perror(qfpathname); + free(qup); + continue; + } + fprintf(stderr, "Creating quota file %s\n", + qfpathname); + sleep(3); + (void) fchown(fd, getuid(), + getentry(quotagroup, GRPQUOTA)); + (void) fchmod(fd, 0640); + if (qfinit(fd, &fst[i], quotatype)) { + perror(qfpathname); + close(fd); + free(qup); + continue; + } + } + if (qflookup(fd, id, quotatype, &qup->dqblk) != 0) { + fprintf(stderr, "edquota: lookup error in "); + perror(qfpathname); + close(fd); + free(qup); + continue; + } + close(fd); + } + strlcpy(qup->qfname, qfpathname, qfpathname_len); // malloc'd size is correct for this + strlcpy(qup->fsname, fst[i].f_mntonname, sizeof(qup->fsname)); + + if (quphead == NULL) + quphead = qup; + else + quptail->next = qup; + quptail = qup; + qup->next = 0; + } + return (quphead); +} +#else +struct quotause * +getprivs(id, quotatype) + register long id; + int quotatype; +{ + register struct fstab *fs; + register struct quotause *qup, *quptail; + struct quotause *quphead; + int qcmd, fd; + size_t qupsize; + char *qfpathname; + size_t qfpathname_len; + static int warned = 0; + extern int errno; + + setfsent(); + quphead = (struct quotause *)0; + qcmd = QCMD(Q_GETQUOTA, quotatype); + while (fs = getfsent()) { + if (!hasquota(fs, quotatype, &qfpathname)) + continue; + qfpathname_len = strlen(qfpathname); + qupsize = sizeof(*qup) + qfpathname_len; + if ((qup = (struct quotause *)malloc(qupsize)) == NULL) { + fprintf(stderr, "edquota: out of memory\n"); + exit(2); + } + if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) { + if (errno == ENOTSUP && !warned) { + warned++; + fprintf(stderr, "Warning: %s\n", + "Quotas are not compiled into this kernel"); + sleep(3); + } + if ((fd = open(qfpathname, O_RDONLY)) < 0) { + fd = open(qfpathname, O_RDWR|O_CREAT, 0640); + if (fd < 0 && errno != ENOENT) { + perror(qfpathname); + free(qup); + continue; + } + fprintf(stderr, "Creating quota file %s\n", + qfpathname); + sleep(3); + (void) fchown(fd, getuid(), + getentry(quotagroup, GRPQUOTA)); + (void) fchmod(fd, 0640); + } + lseek(fd, (off_t)(id * sizeof(struct dqblk)), L_SET); + switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) { + case 0: /* EOF */ + /* + * Convert implicit 0 quota (EOF) + * into an explicit one (zero'ed dqblk) + */ + bzero((caddr_t)&qup->dqblk, + sizeof(struct dqblk)); + break; + + case sizeof(struct dqblk): /* OK */ + break; + + default: /* ERROR */ + fprintf(stderr, "edquota: read error in "); + perror(qfpathname); + close(fd); + free(qup); + continue; + } + close(fd); + } + strlcpy(qup->qfname, qfpathname, qfpathname_len); // malloc'd size is correct for this + strlcpy(qup->fsname, fs->fs_file, sizeof(qup->fsname)); + + if (quphead == NULL) + quphead = qup; + else + quptail->next = qup; + quptail = qup; + qup->next = 0; + } + endfsent(); + return (quphead); +} +#endif /* __APPLE */ + +#ifdef __APPLE__ +#define ONEGIGABYTE (1024*1024*1024) +/* + * Initialize a new quota file. + */ +int +qfinit(fd, fst, type) + int fd; + struct statfs *fst; + int type; +{ + struct dqfilehdr dqhdr = {0}; + u_int64_t fs_size; + int64_t max = 0; + + /* + * Calculate the size of the hash table from the size of + * the file system. Note that the open addressing hashing + * used by the quota file assumes that this table will not + * be more than 90% full. + */ + fs_size = (u_int64_t)fst->f_blocks * (u_int64_t)fst->f_bsize; + + if (type == USRQUOTA) { + max = QF_USERS_PER_GB * (fs_size / ONEGIGABYTE); + + if (max < QF_MIN_USERS) + max = QF_MIN_USERS; + else if (max > QF_MAX_USERS) + max = QF_MAX_USERS; + } else if (type == GRPQUOTA) { + max = QF_GROUPS_PER_GB * (fs_size / ONEGIGABYTE); + + if (max < QF_MIN_GROUPS) + max = QF_MIN_GROUPS; + else if (max > QF_MAX_GROUPS) + max = QF_MAX_GROUPS; + } + /* Round up to a power of 2 */ + if (max && !powerof2(max)) { + int64_t x = max; + max = 4; + while (x>>1 != 1) { + x = x >> 1; + max = max << 1; + } + } + + (void) ftruncate(fd, (off_t)((max + 1) * sizeof(struct dqblk))); + dqhdr.dqh_magic = OSSwapHostToBigInt32(quotamagic[type]); + dqhdr.dqh_version = OSSwapHostToBigConstInt32(QF_VERSION); + dqhdr.dqh_maxentries = OSSwapHostToBigInt32((int32_t)max); + dqhdr.dqh_btime = OSSwapHostToBigConstInt32(MAX_DQ_TIME); + dqhdr.dqh_itime = OSSwapHostToBigConstInt32(MAX_IQ_TIME); + memmove(dqhdr.dqh_string, QF_STRING_TAG, strlen(QF_STRING_TAG)); + (void) lseek(fd, 0, L_SET); + (void) write(fd, &dqhdr, sizeof(dqhdr)); + + return (0); +} + +/* + * Lookup an entry in a quota file. + */ +int +qflookup(fd, id, type, dqbp) + int fd; + uid_t id; + int type; + struct dqblk *dqbp; +{ + struct dqfilehdr dqhdr; + int i, skip, last, m; + int mask; + + bzero(dqbp, sizeof(struct dqblk)); + + if (id == 0) + return (0); + + lseek(fd, 0, L_SET); + if (read(fd, &dqhdr, sizeof(struct dqfilehdr)) != sizeof(struct dqfilehdr)) + return (-1); + + /* Sanity check the quota file header. */ + if ((OSSwapBigToHostInt32(dqhdr.dqh_magic) != quotamagic[type]) || + (OSSwapBigToHostInt32(dqhdr.dqh_version) > 1) || + (!powerof2(OSSwapBigToHostInt32(dqhdr.dqh_maxentries)))) { + fprintf(stderr, "quota: invalid quota file header\n"); + return (-1); + } + + m = OSSwapBigToHostInt32(dqhdr.dqh_maxentries); + mask = m - 1; + i = dqhash1(id, dqhashshift(m), mask); + skip = dqhash2(id, mask); + + for (last = (i + (m-1) * skip) & mask; + i != last; + i = (i + skip) & mask) { + lseek(fd, dqoffset(i), L_SET); + if (read(fd, dqbp, sizeof(struct dqblk)) < sizeof(struct dqblk)) + return (-1); + /* + * Stop when an empty entry is found + * or we encounter a matching id. + */ + if (dqbp->dqb_id == 0 || OSSwapBigToHostInt32(dqbp->dqb_id) == id) + break; + } + /* Put data in host native byte order. */ + dqbp->dqb_bhardlimit = OSSwapBigToHostInt64(dqbp->dqb_bhardlimit); + dqbp->dqb_bsoftlimit = OSSwapBigToHostInt64(dqbp->dqb_bsoftlimit); + dqbp->dqb_curbytes = OSSwapBigToHostInt64(dqbp->dqb_curbytes); + dqbp->dqb_ihardlimit = OSSwapBigToHostInt32(dqbp->dqb_ihardlimit); + dqbp->dqb_isoftlimit = OSSwapBigToHostInt32(dqbp->dqb_isoftlimit); + dqbp->dqb_curinodes = OSSwapBigToHostInt32(dqbp->dqb_curinodes); + dqbp->dqb_btime = OSSwapBigToHostInt32(dqbp->dqb_btime); + dqbp->dqb_itime = OSSwapBigToHostInt32(dqbp->dqb_itime); + dqbp->dqb_id = OSSwapBigToHostInt32(dqbp->dqb_id); + + return (0); +} +#endif /* __APPLE */ + + +/* + * Store the requested quota information. + */ +void +putprivs(id, quotatype, quplist) + uid_t id; + int quotatype; + struct quotause *quplist; +{ + register struct quotause *qup; + int qcmd, fd; + + qcmd = QCMD(Q_SETQUOTA, quotatype); + for (qup = quplist; qup; qup = qup->next) { + if (quotactl(qup->fsname, qcmd, id, (char *)&qup->dqblk) == 0) + continue; +#ifdef __APPLE__ + if ((fd = open(qup->qfname, O_RDWR)) < 0) { + perror(qup->qfname); + } else { + if (qfupdate(fd, id, quotatype, &qup->dqblk) != 0) { + fprintf(stderr, "edquota: "); + perror(qup->qfname); + } +#else + if ((fd = open(qup->qfname, O_WRONLY)) < 0) { + perror(qup->qfname); + } else { + lseek(fd, + (off_t)(id * (long)sizeof (struct dqblk)), L_SET); + if (write(fd, &qup->dqblk, sizeof (struct dqblk)) != + sizeof (struct dqblk)) { + fprintf(stderr, "edquota: "); + perror(qup->qfname); + } +#endif /* __APPLE */ + close(fd); + } + } +} + +#ifdef __APPLE__ +/* + * Update an entry in a quota file. + */ +int +qfupdate(fd, id, type, dqbp) + int fd; + uid_t id; + int type; + struct dqblk *dqbp; +{ + struct dqblk dqbuf; + struct dqfilehdr dqhdr; + int i, skip, last, m; + unsigned int mask; + + if (id == 0) + return (0); + + lseek(fd, 0, L_SET); + if (read(fd, &dqhdr, sizeof(struct dqfilehdr)) != sizeof(struct dqfilehdr)) + return (-1); + + /* Sanity check the quota file header. */ + if ((OSSwapBigToHostInt32(dqhdr.dqh_magic) != quotamagic[type]) || + (OSSwapBigToHostInt32(dqhdr.dqh_version) > QF_VERSION) || + (!powerof2(OSSwapBigToHostInt32(dqhdr.dqh_maxentries)))) { + fprintf(stderr, "quota: invalid quota file header\n"); + return (EINVAL); + } + + m = OSSwapBigToHostInt32(dqhdr.dqh_maxentries); + mask = m - 1; + i = dqhash1(id, dqhashshift(m), mask); + skip = dqhash2(id, mask); + + for (last = (i + (m-1) * skip) & mask; + i != last; + i = (i + skip) & mask) { + lseek(fd, dqoffset(i), L_SET); + if (read(fd, &dqbuf, sizeof(struct dqblk)) < sizeof(struct dqblk)) + return (-1); + /* + * Stop when an empty entry is found + * or we encounter a matching id. + */ + if (dqbuf.dqb_id == 0 || OSSwapBigToHostInt32(dqbuf.dqb_id) == id) { + /* Convert buffer to big endian before writing. */ + struct dqblk tblk; + + tblk.dqb_bhardlimit = OSSwapHostToBigInt64(dqbp->dqb_bhardlimit); + tblk.dqb_bsoftlimit = OSSwapHostToBigInt64(dqbp->dqb_bsoftlimit); + tblk.dqb_curbytes = OSSwapHostToBigInt64(dqbp->dqb_curbytes); + tblk.dqb_ihardlimit = OSSwapHostToBigInt32(dqbp->dqb_ihardlimit); + tblk.dqb_isoftlimit = OSSwapHostToBigInt32(dqbp->dqb_isoftlimit); + tblk.dqb_curinodes = OSSwapHostToBigInt32(dqbp->dqb_curinodes); + tblk.dqb_btime = OSSwapHostToBigInt32((int)dqbp->dqb_btime); + tblk.dqb_itime = OSSwapHostToBigInt32((int)dqbp->dqb_itime); + tblk.dqb_id = OSSwapHostToBigInt32(id); + + lseek(fd, dqoffset(i), L_SET); + if (write(fd, &tblk, sizeof (struct dqblk)) != + sizeof (struct dqblk)) { + return (-1); + } + return (0); + } + } + errno = ENOSPC; + return (-1); +} +#endif /* __APPLE__ */ + +/* + * Take a list of priviledges and get it edited. + */ +int +editit(tmpfile) + char *tmpfile; +{ + int omask; + int pid, stat; + extern char *getenv(); + + omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP)); + top: + if ((pid = fork()) < 0) { + extern int errno; + + if (errno == EPROCLIM) { + fprintf(stderr, "You have too many processes\n"); + return(0); + } + if (errno == EAGAIN) { + sleep(1); + goto top; + } + perror("fork"); + return (0); + } + if (pid == 0) { + register char *ed; + struct passwd *pwd = getpwuid(getuid()); + gid_t newgid = getgid(); + + setgid(newgid); + if (pwd) initgroups(pwd->pw_name, newgid); + setuid(getuid()); + sigsetmask(omask); + + if ((ed = getenv("EDITOR")) == (char *)0) + ed = _PATH_VI; + execlp(ed, ed, tmpfile, NULL); + perror(ed); + exit(1); + } + waitpid(pid, &stat, 0); + sigsetmask(omask); + if (!WIFEXITED(stat) || WEXITSTATUS(stat) != 0) + return (0); + return (1); +} + +/* + * Convert a quotause list to an ASCII file. + */ +int +writeprivs(quplist, outfd, name, quotatype) + struct quotause *quplist; + int outfd; + char *name; + int quotatype; +{ + register struct quotause *qup; + FILE *fd; + + ftruncate(outfd, 0); + lseek(outfd, 0, L_SET); + if ((fd = fdopen(dup(outfd), "w")) == NULL) { + fprintf(stderr, "edquota: "); + perror(tmpfil); + exit(1); + } + fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name); + for (qup = quplist; qup; qup = qup->next) { +#ifdef __APPLE__ + fprintf(fd, "%s: %s %qd, limits (soft = %qd, hard = %qd)\n", + qup->fsname, "1K blocks in use:", + qup->dqblk.dqb_curbytes / 1024, + qup->dqblk.dqb_bsoftlimit / 1024, + qup->dqblk.dqb_bhardlimit / 1024); +#else + fprintf(fd, "%s: %s %d, limits (soft = %d, hard = %d)\n", + qup->fsname, "blocks in use:", + dbtob(qup->dqblk.dqb_curblocks) / 1024, + dbtob(qup->dqblk.dqb_bsoftlimit) / 1024, + dbtob(qup->dqblk.dqb_bhardlimit) / 1024); +#endif /* __APPLE__ */ + + fprintf(fd, "%s %d, limits (soft = %d, hard = %d)\n", + "\tinodes in use:", qup->dqblk.dqb_curinodes, + qup->dqblk.dqb_isoftlimit, qup->dqblk.dqb_ihardlimit); + } + fclose(fd); + return (1); +} + +/* + * Merge changes to an ASCII file into a quotause list. + */ +int +readprivs(quplist, infd) + struct quotause *quplist; + int infd; +{ + register struct quotause *qup; + FILE *fd; + int cnt; + register char *cp; + struct dqblk dqblk; + char fsp[BUFSIZ], line1[BUFSIZ], line2[BUFSIZ]; + + lseek(infd, 0, L_SET); + fd = fdopen(dup(infd), "r"); + if (fd == NULL) { + fprintf(stderr, "Can't re-read temp file!!\n"); + return (0); + } + /* + * Discard title line, then read pairs of lines to process. + */ + (void) fgets(line1, sizeof (line1), fd); + while (fgets(line1, sizeof (line1), fd) != NULL && + fgets(line2, sizeof (line2), fd) != NULL) { + cp = strstr(line1, ": 1K blocks in use:"); + if (cp == NULL) { + fprintf(stderr, "%s: bad format for line\n", line1); + return 0; + } + /* Copy up to the template text */ + strlcpy(fsp, line1, cp - line1 + 1); + /* And point cp right after it. */ + cp = line1 + strlen(fsp) + 1; +#ifdef __APPLE__ + /* We expect input to be in 1K blocks */ + cnt = sscanf(cp, + " 1K blocks in use: %qd, limits (soft = %qd, hard = %qd)", + &dqblk.dqb_curbytes, &dqblk.dqb_bsoftlimit, + &dqblk.dqb_bhardlimit); + if (cnt != 3) { + fprintf(stderr, "%s:%s: bad format\n", fsp, cp); + return (0); + } + + /* convert default 1K blocks to byte count */ + dqblk.dqb_curbytes = dqblk.dqb_curbytes * 1024; + dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit * 1024; + dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit * 1024; +#else + cnt = sscanf(cp, + " blocks in use: %d, limits (soft = %d, hard = %d)", + &dqblk.dqb_curblocks, &dqblk.dqb_bsoftlimit, + &dqblk.dqb_bhardlimit); + if (cnt != 3) { + fprintf(stderr, "%s:%s: bad format\n", fsp, cp); + return (0); + } + dqblk.dqb_curblocks = btodb(dqblk.dqb_curblocks * 1024); + dqblk.dqb_bsoftlimit = btodb(dqblk.dqb_bsoftlimit * 1024); + dqblk.dqb_bhardlimit = btodb(dqblk.dqb_bhardlimit * 1024); +#endif /* __APPLE__ */ + + if ((cp = strtok(line2, "\n")) == NULL) { + fprintf(stderr, "%s: %s: bad format\n", fsp, line2); + return (0); + } + cnt = sscanf(cp, + "\tinodes in use: %d, limits (soft = %d, hard = %d)", + &dqblk.dqb_curinodes, &dqblk.dqb_isoftlimit, + &dqblk.dqb_ihardlimit); + if (cnt != 3) { + fprintf(stderr, "%s: %s: bad format\n", fsp, line2); + return (0); + } + for (qup = quplist; qup; qup = qup->next) { + if (strcmp(fsp, qup->fsname)) + continue; + /* + * Cause time limit to be reset when the quota + * is next used if previously had no soft limit + * or were under it, but now have a soft limit + * and are over it. + */ +#ifdef __APPLE__ + if (dqblk.dqb_bsoftlimit && + qup->dqblk.dqb_curbytes >= dqblk.dqb_bsoftlimit && + (qup->dqblk.dqb_bsoftlimit == 0 || + qup->dqblk.dqb_curbytes < + qup->dqblk.dqb_bsoftlimit)) + qup->dqblk.dqb_btime = 0; +#else + if (dqblk.dqb_bsoftlimit && + qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit && + (qup->dqblk.dqb_bsoftlimit == 0 || + qup->dqblk.dqb_curblocks < + qup->dqblk.dqb_bsoftlimit)) + qup->dqblk.dqb_btime = 0; +#endif /* __APPLE__ */ + if (dqblk.dqb_isoftlimit && + qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit && + (qup->dqblk.dqb_isoftlimit == 0 || + qup->dqblk.dqb_curinodes < + qup->dqblk.dqb_isoftlimit)) + qup->dqblk.dqb_itime = 0; + qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit; + qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit; + qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit; + qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit; + qup->flags |= FOUND; +#ifdef __APPLE__ + if (dqblk.dqb_curbytes == qup->dqblk.dqb_curbytes && + dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes) + break; +#else + if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks && + dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes) + break; +#endif /* __APPLE__ */ + fprintf(stderr, + "%s: cannot change current allocation\n", fsp); + break; + } + } + fclose(fd); + /* + * Disable quotas for any filesystems that have not been found. + */ + for (qup = quplist; qup; qup = qup->next) { + if (qup->flags & FOUND) { + qup->flags &= ~FOUND; + continue; + } + qup->dqblk.dqb_bsoftlimit = 0; + qup->dqblk.dqb_bhardlimit = 0; + qup->dqblk.dqb_isoftlimit = 0; + qup->dqblk.dqb_ihardlimit = 0; + } + return (1); +} + +/* + * Convert a quotause list to an ASCII file of grace times. + */ +int +writetimes(quplist, outfd, quotatype) + struct quotause *quplist; + int outfd; + int quotatype; +{ + register struct quotause *qup; + char *cvtstoa(); + FILE *fd; + + ftruncate(outfd, 0); + lseek(outfd, 0, L_SET); + if ((fd = fdopen(dup(outfd), "w")) == NULL) { + fprintf(stderr, "edquota: "); + perror(tmpfil); + exit(1); + } + fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n"); + fprintf(fd, "Grace period before enforcing soft limits for %ss:\n", + qfextension[quotatype]); + for (qup = quplist; qup; qup = qup->next) { + fprintf(fd, "%s: block grace period: %s, ", + qup->fsname, cvtstoa(qup->dqblk.dqb_btime)); + fprintf(fd, "file grace period: %s\n", + cvtstoa(qup->dqblk.dqb_itime)); + } + fclose(fd); + return (1); +} + +/* + * Merge changes of grace times in an ASCII file into a quotause list. + */ +int +readtimes(quplist, infd) + struct quotause *quplist; + int infd; +{ + register struct quotause *qup; + FILE *fd; + int cnt; + register char *cp; + time_t itime, btime, iseconds, bseconds; + char *fsp, bunits[10], iunits[10], line1[BUFSIZ]; + + lseek(infd, 0, L_SET); + fd = fdopen(dup(infd), "r"); + if (fd == NULL) { + fprintf(stderr, "Can't re-read temp file!!\n"); + return (0); + } + /* + * Discard two title lines, then read lines to process. + */ + (void) fgets(line1, sizeof (line1), fd); + (void) fgets(line1, sizeof (line1), fd); + while (fgets(line1, sizeof (line1), fd) != NULL) { + if ((fsp = strtok(line1, " \t:")) == NULL) { + fprintf(stderr, "%s: bad format\n", line1); + return (0); + } + if ((cp = strtok((char *)0, "\n")) == NULL) { + fprintf(stderr, "%s: %s: bad format\n", fsp, + &fsp[strlen(fsp) + 1]); + return (0); + } + cnt = sscanf(cp, + " block grace period: %ld %s file grace period: %ld %s", + &btime, bunits, &itime, iunits); + if (cnt != 4) { + fprintf(stderr, "%s:%s: bad format\n", fsp, cp); + return (0); + } + if (cvtatos(btime, bunits, &bseconds) == 0) + return (0); + if (cvtatos(itime, iunits, &iseconds) == 0) + return (0); + for (qup = quplist; qup; qup = qup->next) { + if (strcmp(fsp, qup->fsname)) + continue; + qup->dqblk.dqb_btime = (uint32_t) bseconds; + qup->dqblk.dqb_itime = (uint32_t) iseconds; + qup->flags |= FOUND; + break; + } + } + fclose(fd); + /* + * reset default grace periods for any filesystems + * that have not been found. + */ + for (qup = quplist; qup; qup = qup->next) { + if (qup->flags & FOUND) { + qup->flags &= ~FOUND; + continue; + } + qup->dqblk.dqb_btime = 0; + qup->dqblk.dqb_itime = 0; + } + return (1); +} + +/* + * Convert seconds to ASCII times. + */ +char * +cvtstoa(time) + time_t time; +{ + static char buf[20]; + + if (time % (24 * 60 * 60) == 0) { + time /= 24 * 60 * 60; + snprintf(buf, sizeof(buf), "%d day%s", (int)time, time == 1 ? "" : "s"); + } else if (time % (60 * 60) == 0) { + time /= 60 * 60; + snprintf(buf, sizeof(buf), "%d hour%s", (int)time, time == 1 ? "" : "s"); + } else if (time % 60 == 0) { + time /= 60; + snprintf(buf, sizeof(buf), "%d minute%s", (int)time, time == 1 ? "" : "s"); + } else + snprintf(buf, sizeof(buf), "%d second%s", (int)time, time == 1 ? "" : "s"); + return (buf); +} + +/* + * Convert ASCII input times to seconds. + */ +int +cvtatos(time, units, seconds) + time_t time; + char *units; + time_t *seconds; +{ + + if (bcmp(units, "second", 6) == 0) + *seconds = time; + else if (bcmp(units, "minute", 6) == 0) + *seconds = time * 60; + else if (bcmp(units, "hour", 4) == 0) + *seconds = time * 60 * 60; + else if (bcmp(units, "day", 3) == 0) + *seconds = time * 24 * 60 * 60; + else { + printf("%s: bad units, specify %s\n", units, + "days, hours, minutes, or seconds"); + return (0); + } + return (1); +} + +/* + * Free a list of quotause structures. + */ +void +freeprivs(quplist) + struct quotause *quplist; +{ + register struct quotause *qup, *nextqup; + + for (qup = quplist; qup; qup = nextqup) { + nextqup = qup->next; + free(qup); + } +} + +/* + * Check whether a string is completely composed of digits. + */ +int +alldigits(s) + register char *s; +{ + register int c; + + c = *s++; + do { + if (!isdigit(c)) + return (0); + } while ((c = *s++)); + return (1); +} + +/* + * Check to see if a particular quota is to be enabled. + */ +#ifdef __APPLE__ +int +hasquota(fst, type, qfnamep) + register struct statfs *fst; + int type; + char **qfnamep; +{ + struct stat sb; + static char initname, usrname[100], grpname[100]; + static char buf[BUFSIZ]; + + if (!initname) { + snprintf(usrname, sizeof(usrname), "%s%s", qfextension[USRQUOTA], qfname); + snprintf(grpname, sizeof(grpname), "%s%s", qfextension[GRPQUOTA], qfname); + initname = 1; + } + + /* + We only support the default path to the + on disk quota files. + */ + + (void)snprintf(buf, sizeof(buf), "%s/%s.%s", fst->f_mntonname, + QUOTAOPSNAME, qfextension[type] ); + if (stat(buf, &sb) != 0) { + /* There appears to be no mount option file */ + return(0); + } + + (void) snprintf(buf, sizeof(buf), "%s/%s.%s", fst->f_mntonname, qfname, qfextension[type]); + *qfnamep = buf; + return (1); +} +#else +hasquota(fs, type, qfnamep) + register struct fstab *fs; + int type; + char **qfnamep; +{ + register char *opt; + char *cp, *index(), *strtok(); + static char initname, usrname[100], grpname[100]; + static char buf[BUFSIZ]; + + if (!initname) { + snprintf(usrname, sizeof(usrname), "%s%s", qfextension[USRQUOTA], qfname); + snprintf(grpname, sizeof(grpname), "%s%s", qfextension[GRPQUOTA], qfname); + initname = 1; + } + strlcpy(buf, fs->fs_mntops, sizeof(buf)); + for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) { + if (cp = index(opt, '=')) + *cp++ = '\0'; + if (type == USRQUOTA && strcmp(opt, usrname) == 0) + break; + if (type == GRPQUOTA && strcmp(opt, grpname) == 0) + break; + } + if (!opt) + return (0); + if (cp) { + *qfnamep = cp; + return (1); + } + (void) snprintf(buf, sizeof(buf), "%s/%s.%s", fs->fs_file, qfname, qfextension[type]); + *qfnamep = buf; + return (1); +} +#endif /* __APPLE */ |