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- /*
- * Copyright (c) 1980, 1990 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.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1980, 1990 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)edquota.c 5.15 (Berkeley) 9/27/90";
- #endif /* not lint */
-
- /*
- * Disk quota editor.
- */
- #include <sys/param.h>
- #include <sys/stat.h>
- #include <sys/file.h>
- #include <sys/wait.h>
- #include <ufs/quota.h>
- #include <errno.h>
- #include <fstab.h>
- #include <pwd.h>
- #include <grp.h>
- #include <ctype.h>
- #include <stdio.h>
- #include <string.h>
- #include "pathnames.h"
-
- char *qfname = QUOTAFILENAME;
- char *qfextension[] = INITQFNAMES;
- char *quotagroup = QUOTAGROUP;
- char tmpfil[] = _PATH_TMP;
-
- struct quotause {
- struct quotause *next;
- long flags;
- struct dqblk dqblk;
- char fsname[MAXPATHLEN + 1];
- char qfname[1]; /* actually longer */
- } *getprivs();
- #define FOUND 0x01
-
- main(argc, argv)
- register char **argv;
- int argc;
- {
- register struct quotause *qup, *protoprivs, *curprivs;
- extern char *optarg;
- extern int optind;
- register long id, protoid;
- register int quotatype, tmpfd;
- char *protoname, 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);
- 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)) < 0)
- continue;
- putprivs(id, quotatype, protoprivs);
- }
- exit(0);
- }
- tmpfd = mkstemp(tmpfil);
- fchown(tmpfd, getuid(), getgid());
- if (tflag) {
- protoprivs = getprivs(0, quotatype);
- if (writetimes(protoprivs, tmpfd, quotatype) == 0)
- exit(1);
- if (editit(tmpfil) && 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);
- if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
- continue;
- if (editit(tmpfil) && readprivs(curprivs, tmpfd))
- putprivs(id, quotatype, curprivs);
- freeprivs(curprivs);
- }
- close(tmpfd);
- unlink(tmpfil);
- exit(0);
- }
-
- 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");
- 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.
- */
- 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))
- 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.
- */
- struct quotause *
- getprivs(id, quotatype)
- register long id;
- int quotatype;
- {
- register struct fstab *fs;
- register struct quotause *qup, *quptail;
- struct quotause *quphead;
- int qcmd, qupsize, fd;
- char *qfpathname;
- static int warned = 0;
- extern int errno;
-
- setfsent();
- quphead = (struct quotause *)0;
- qcmd = QCMD(Q_GETQUOTA, quotatype);
- while (fs = getfsent()) {
- if (strcmp(fs->fs_vfstype, "ufs"))
- continue;
- if (!hasquota(fs, quotatype, &qfpathname))
- continue;
- qupsize = sizeof(*qup) + strlen(qfpathname);
- 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 == EOPNOTSUPP && !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, (long)(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);
- }
- strcpy(qup->qfname, qfpathname);
- strcpy(qup->fsname, fs->fs_file);
- if (quphead == NULL)
- quphead = qup;
- else
- quptail->next = qup;
- quptail = qup;
- qup->next = 0;
- }
- endfsent();
- return (quphead);
- }
-
- /*
- * Store the requested quota information.
- */
- putprivs(id, quotatype, quplist)
- long 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, &qup->dqblk) == 0)
- continue;
- if ((fd = open(qup->qfname, O_WRONLY)) < 0) {
- perror(qup->qfname);
- } else {
- lseek(fd, (long)id * (long)sizeof (struct dqblk), 0);
- if (write(fd, &qup->dqblk, sizeof (struct dqblk)) !=
- sizeof (struct dqblk)) {
- fprintf(stderr, "edquota: ");
- perror(qup->qfname);
- }
- close(fd);
- }
- }
- }
-
- /*
- * Take a list of priviledges and get it edited.
- */
- editit(tmpfile)
- char *tmpfile;
- {
- long omask;
- int pid, stat;
- extern char *getenv();
-
- omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
- top:
- if ((pid = fork()) < 0) {
- extern 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;
-
- sigsetmask(omask);
- setgid(getgid());
- setuid(getuid());
- if ((ed = getenv("EDITOR")) == (char *)0)
- ed = _PATH_VI;
- execlp(ed, ed, tmpfile, 0);
- 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.
- */
- 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) {
- 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);
- 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.
- */
- readprivs(quplist, infd)
- struct quotause *quplist;
- int infd;
- {
- register struct quotause *qup;
- FILE *fd;
- int cnt;
- register char *cp;
- struct dqblk dqblk;
- char *fsp, 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) {
- 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,
- " 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);
- 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.
- */
- 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;
- 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;
- if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
- dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
- break;
- 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.
- */
- 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.
- */
- 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: %d %s file grace period: %d %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 = bseconds;
- qup->dqblk.dqb_itime = 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;
- sprintf(buf, "%d day%s", time, time == 1 ? "" : "s");
- } else if (time % (60 * 60) == 0) {
- time /= 60 * 60;
- sprintf(buf, "%d hour%s", time, time == 1 ? "" : "s");
- } else if (time % 60 == 0) {
- time /= 60;
- sprintf(buf, "%d minute%s", time, time == 1 ? "" : "s");
- } else
- sprintf(buf, "%d second%s", time, time == 1 ? "" : "s");
- return (buf);
- }
-
- /*
- * Convert ASCII input times to seconds.
- */
- 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.
- */
- 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.
- */
- alldigits(s)
- register char *s;
- {
- register 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.
- */
- 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) {
- sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
- sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
- initname = 1;
- }
- strcpy(buf, fs->fs_mntops);
- 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) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
- *qfnamep = buf;
- return (1);
- }
-