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NetBSD/usr.sbin/edquota/edquota.c

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/* $NetBSD: edquota.c,v 1.52 2012/08/14 04:53:43 dholland 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 <sys/cdefs.h>
#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[] = "from: @(#)edquota.c 8.3 (Berkeley) 4/27/95";
#else
__RCSID("$NetBSD: edquota.c,v 1.52 2012/08/14 04:53:43 dholland Exp $");
#endif
#endif /* not lint */
/*
* Disk quota editor.
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <sys/wait.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/statvfs.h>
#include <quota.h>
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <fstab.h>
#include <pwd.h>
#include <grp.h>
#include <ctype.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#include "printquota.h"
#include "pathnames.h"
/*
* XXX. Ideally we shouldn't compile this in, but it'll take some
* reworking to avoid it and it'll be ok for now.
*/
#define EDQUOTA_NUMOBJTYPES 2
#if 0
static const char *quotagroup = QUOTAGROUP;
#endif
#define MAX_TMPSTR (100+MAXPATHLEN)
enum sources {
SRC_EDITED, /* values came from user */
SRC_QUOTA, /* values came from a specific quota entry */
SRC_DEFAULT, /* values were copied from the default quota entry */
SRC_CLEAR, /* values arose by zeroing out a quota entry */
};
struct quotause {
struct quotause *next;
unsigned found:1, /* found after running editor */
xgrace:1, /* grace periods are per-id */
isdefault:1;
struct quotaval qv[EDQUOTA_NUMOBJTYPES];
enum sources source[EDQUOTA_NUMOBJTYPES];
char fsname[MAXPATHLEN + 1];
char implementation[32];
};
struct quotalist {
struct quotause *head;
struct quotause *tail;
char *idtypename;
};
static void usage(void) __dead;
static int Hflag = 0;
/* more compact form of constants */
#define QO_BLK QUOTA_OBJTYPE_BLOCKS
#define QO_FL QUOTA_OBJTYPE_FILES
////////////////////////////////////////////////////////////
// support code
/*
* This routine converts a name for a particular quota class to
* an identifier. This routine must agree with the kernel routine
* getinoquota as to the interpretation of quota classes.
*/
static int
getidbyname(const char *name, int idtype)
{
struct passwd *pw;
struct group *gr;
if (alldigits(name))
return atoi(name);
switch (idtype) {
case QUOTA_IDTYPE_USER:
if ((pw = getpwnam(name)) != NULL)
return pw->pw_uid;
warnx("%s: no such user", name);
break;
case QUOTA_IDTYPE_GROUP:
if ((gr = getgrnam(name)) != NULL)
return gr->gr_gid;
warnx("%s: no such group", name);
break;
default:
warnx("%d: unknown quota type", idtype);
break;
}
sleep(1);
return -1;
}
/*
* check if a source is "real" (reflects actual data) or not
*/
static bool
source_is_real(enum sources source)
{
switch (source) {
case SRC_EDITED:
case SRC_QUOTA:
return true;
case SRC_DEFAULT:
case SRC_CLEAR:
return false;
}
assert(!"encountered invalid source");
return false;
}
/*
* some simple string tools
*/
static /*const*/ char *
skipws(/*const*/ char *s)
{
while (*s == ' ' || *s == '\t') {
s++;
}
return s;
}
static /*const*/ char *
skipword(/*const*/ char *s)
{
while (*s != '\0' && *s != '\n' && *s != ' ' && *s != '\t') {
s++;
}
return s;
}
////////////////////////////////////////////////////////////
// quotause operations
/*
* Create an empty quotause structure.
*/
static struct quotause *
quotause_create(void)
{
struct quotause *qup;
unsigned i;
qup = malloc(sizeof(*qup));
if (qup == NULL) {
err(1, "malloc");
}
qup->next = NULL;
qup->found = 0;
qup->xgrace = 0;
qup->isdefault = 0;
for (i=0; i<EDQUOTA_NUMOBJTYPES; i++) {
quotaval_clear(&qup->qv[i]);
qup->source[i] = SRC_CLEAR;
}
qup->fsname[0] = '\0';
return qup;
}
/*
* Free a quotause structure.
*/
static void
quotause_destroy(struct quotause *qup)
{
free(qup);
}
////////////////////////////////////////////////////////////
// quotalist operations
/*
* Create a quotause list.
*/
static struct quotalist *
quotalist_create(void)
{
struct quotalist *qlist;
qlist = malloc(sizeof(*qlist));
if (qlist == NULL) {
err(1, "malloc");
}
qlist->head = NULL;
qlist->tail = NULL;
qlist->idtypename = NULL;
return qlist;
}
/*
* Free a list of quotause structures.
*/
static void
quotalist_destroy(struct quotalist *qlist)
{
struct quotause *qup, *nextqup;
for (qup = qlist->head; qup; qup = nextqup) {
nextqup = qup->next;
quotause_destroy(qup);
}
free(qlist->idtypename);
free(qlist);
}
#if 0
static bool
quotalist_empty(struct quotalist *qlist)
{
return qlist->head == NULL;
}
#endif
static void
quotalist_append(struct quotalist *qlist, struct quotause *qup)
{
/* should not already be on a list */
assert(qup->next == NULL);
if (qlist->head == NULL) {
qlist->head = qup;
} else {
qlist->tail->next = qup;
}
qlist->tail = qup;
}
////////////////////////////////////////////////////////////
// ffs quota v1
#if 0
static void
putprivs1(uint32_t id, int idtype, struct quotause *qup)
{
struct dqblk dqblk;
int fd;
quotavals_to_dqblk(&qup->qv[QUOTA_LIMIT_BLOCK],
&qup->qv[QUOTA_LIMIT_FILE],
&dqblk);
assert((qup->flags & DEFAULT) == 0);
if ((fd = open(qup->qfname, O_WRONLY)) < 0) {
warnx("open `%s'", qup->qfname);
} else {
(void)lseek(fd,
(off_t)(id * (long)sizeof (struct dqblk)),
SEEK_SET);
if (write(fd, &dqblk, sizeof (struct dqblk)) !=
sizeof (struct dqblk))
warnx("writing `%s'", qup->qfname);
close(fd);
}
}
static struct quotause *
getprivs1(long id, int idtype, const char *filesys)
{
struct fstab *fs;
char qfpathname[MAXPATHLEN], xbuf[MAXPATHLEN];
const char *fsspec;
struct quotause *qup;
struct dqblk dqblk;
int fd;
setfsent();
while ((fs = getfsent()) != NULL) {
if (strcmp(fs->fs_vfstype, "ffs"))
continue;
fsspec = getfsspecname(xbuf, sizeof(xbuf), fs->fs_spec);
if (fsspec == NULL) {
warn("%s", xbuf);
continue;
}
if (strcmp(fsspec, filesys) == 0 ||
strcmp(fs->fs_file, filesys) == 0)
break;
}
if (fs == NULL)
return NULL;
if (!hasquota(qfpathname, sizeof(qfpathname), fs,
quota_idtype_to_ufs(idtype)))
return NULL;
qup = quotause_create();
strcpy(qup->fsname, fs->fs_file);
if ((fd = open(qfpathname, O_RDONLY)) < 0) {
fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
if (fd < 0 && errno != ENOENT) {
warnx("open `%s'", qfpathname);
quotause_destroy(qup);
return NULL;
}
warnx("Creating quota file %s", qfpathname);
sleep(3);
(void)fchown(fd, getuid(),
getidbyname(quotagroup, QUOTA_CLASS_GROUP));
(void)fchmod(fd, 0640);
}
(void)lseek(fd, (off_t)(id * sizeof(struct dqblk)),
SEEK_SET);
switch (read(fd, &dqblk, sizeof(struct dqblk))) {
case 0: /* EOF */
/*
* Convert implicit 0 quota (EOF)
* into an explicit one (zero'ed dqblk)
*/
memset(&dqblk, 0, sizeof(struct dqblk));
break;
case sizeof(struct dqblk): /* OK */
break;
default: /* ERROR */
warn("read error in `%s'", qfpathname);
close(fd);
quotause_destroy(qup);
return NULL;
}
close(fd);
qup->qfname = qfpathname;
endfsent();
dqblk_to_quotavals(&dqblk,
&qup->qv[QUOTA_LIMIT_BLOCK],
&qup->qv[QUOTA_LIMIT_FILE]);
return qup;
}
#endif
////////////////////////////////////////////////////////////
// generic quota interface
static int
dogetprivs2(struct quotahandle *qh, int idtype, id_t id, int defaultq,
int objtype, struct quotause *qup)
{
struct quotakey qk;
qk.qk_idtype = idtype;
qk.qk_id = defaultq ? QUOTA_DEFAULTID : id;
qk.qk_objtype = objtype;
if (quota_get(qh, &qk, &qup->qv[objtype]) == 0) {
/* succeeded */
qup->source[objtype] = SRC_QUOTA;
return 0;
}
if (errno != ENOENT) {
/* serious failure */
return -1;
}
/* no entry, get default entry */
qk.qk_id = QUOTA_DEFAULTID;
if (quota_get(qh, &qk, &qup->qv[objtype]) == 0) {
/* succeeded */
qup->source[objtype] = SRC_DEFAULT;
return 0;
}
if (errno != ENOENT) {
return -1;
}
/* use a zeroed-out entry */
quotaval_clear(&qup->qv[objtype]);
qup->source[objtype] = SRC_CLEAR;
return 0;
}
static struct quotause *
getprivs2(long id, int idtype, const char *filesys, int defaultq,
char **idtypename_p)
{
struct quotause *qup;
struct quotahandle *qh;
const char *impl;
unsigned restrictions;
const char *idtypename;
int serrno;
qup = quotause_create();
strcpy(qup->fsname, filesys);
if (defaultq)
qup->isdefault = 1;
qh = quota_open(filesys);
if (qh == NULL) {
serrno = errno;
quotause_destroy(qup);
errno = serrno;
return NULL;
}
impl = quota_getimplname(qh);
if (impl == NULL) {
impl = "???";
}
strlcpy(qup->implementation, impl, sizeof(qup->implementation));
restrictions = quota_getrestrictions(qh);
if ((restrictions & QUOTA_RESTRICT_UNIFORMGRACE) == 0) {
qup->xgrace = 1;
}
if (*idtypename_p == NULL) {
idtypename = quota_idtype_getname(qh, idtype);
*idtypename_p = strdup(idtypename);
if (*idtypename_p == NULL) {
errx(1, "Out of memory");
}
}
if (dogetprivs2(qh, idtype, id, defaultq, QUOTA_OBJTYPE_BLOCKS, qup)) {
serrno = errno;
quota_close(qh);
quotause_destroy(qup);
errno = serrno;
return NULL;
}
if (dogetprivs2(qh, idtype, id, defaultq, QUOTA_OBJTYPE_FILES, qup)) {
serrno = errno;
quota_close(qh);
quotause_destroy(qup);
errno = serrno;
return NULL;
}
quota_close(qh);
return qup;
}
static void
putprivs2(uint32_t id, int idtype, struct quotause *qup)
{
struct quotahandle *qh;
struct quotakey qk;
char idname[32];
if (qup->isdefault) {
snprintf(idname, sizeof(idname), "%s default",
idtype == QUOTA_IDTYPE_USER ? "user" : "group");
id = QUOTA_DEFAULTID;
} else {
snprintf(idname, sizeof(idname), "%s %u",
idtype == QUOTA_IDTYPE_USER ? "uid" : "gid", id);
}
qh = quota_open(qup->fsname);
if (qh == NULL) {
err(1, "%s: quota_open", qup->fsname);
}
if (source_is_real(qup->source[QUOTA_OBJTYPE_BLOCKS])) {
qk.qk_idtype = idtype;
qk.qk_id = id;
qk.qk_objtype = QUOTA_OBJTYPE_BLOCKS;
if (quota_put(qh, &qk, &qup->qv[QO_BLK])) {
err(1, "%s: quota_put (%s blocks)", qup->fsname,
idname);
}
}
if (source_is_real(qup->source[QUOTA_OBJTYPE_FILES])) {
qk.qk_idtype = idtype;
qk.qk_id = id;
qk.qk_objtype = QUOTA_OBJTYPE_FILES;
if (quota_put(qh, &qk, &qup->qv[QO_FL])) {
err(1, "%s: quota_put (%s files)", qup->fsname,
idname);
}
}
quota_close(qh);
}
////////////////////////////////////////////////////////////
// quota format switch
/*
* Collect the requested quota information.
*/
static struct quotalist *
getprivs(long id, int defaultq, int idtype, const char *filesys)
{
struct statvfs *fst;
int nfst, i;
struct quotalist *qlist;
struct quotause *qup;
int seenany = 0;
qlist = quotalist_create();
nfst = getmntinfo(&fst, MNT_WAIT);
if (nfst == 0)
errx(1, "no filesystems mounted!");
for (i = 0; i < nfst; i++) {
if ((fst[i].f_flag & ST_QUOTA) == 0)
continue;
seenany = 1;
if (filesys &&
strcmp(fst[i].f_mntonname, filesys) != 0 &&
strcmp(fst[i].f_mntfromname, filesys) != 0)
continue;
qup = getprivs2(id, idtype, fst[i].f_mntonname, defaultq,
&qlist->idtypename);
if (qup == NULL) {
/* XXX the atf tests demand failing silently */
/*warn("Reading quotas failed for id %ld", id);*/
continue;
}
quotalist_append(qlist, qup);
}
if (!seenany) {
errx(1, "No mounted filesystems have quota support");
}
#if 0
if (filesys && quotalist_empty(qlist)) {
if (defaultq)
errx(1, "no default quota for version 1");
/* if we get there, filesys is not mounted. try the old way */
qup = getprivs1(id, idtype, filesys);
if (qup == NULL) {
warnx("getprivs1 failed");
return qlist;
}
quotalist_append(qlist, qup);
}
#endif
return qlist;
}
/*
* Store the requested quota information.
*/
static void
putprivs(uint32_t id, int idtype, struct quotalist *qlist)
{
struct quotause *qup;
for (qup = qlist->head; qup; qup = qup->next) {
#if 0
if (qup->qfname != NULL)
putprivs1(id, idtype, qup);
else
#endif
putprivs2(id, idtype, qup);
}
}
static void
clearpriv(int argc, char **argv, const char *filesys, int idtype)
{
struct statvfs *fst;
int nfst, i;
int id;
id_t *ids;
unsigned nids, maxids, j;
struct quotahandle *qh;
struct quotakey qk;
char idname[32];
maxids = 4;
nids = 0;
ids = malloc(maxids * sizeof(ids[0]));
if (ids == NULL) {
err(1, "malloc");
}
for ( ; argc > 0; argc--, argv++) {
if ((id = getidbyname(*argv, idtype)) == -1)
continue;
if (nids + 1 > maxids) {
maxids *= 2;
ids = realloc(ids, maxids * sizeof(ids[0]));
if (ids == NULL) {
err(1, "realloc");
}
}
ids[nids++] = id;
}
/* now loop over quota-enabled filesystems */
nfst = getmntinfo(&fst, MNT_WAIT);
if (nfst == 0)
errx(1, "no filesystems mounted!");
for (i = 0; i < nfst; i++) {
if ((fst[i].f_flag & ST_QUOTA) == 0)
continue;
if (filesys && strcmp(fst[i].f_mntonname, filesys) != 0 &&
strcmp(fst[i].f_mntfromname, filesys) != 0)
continue;
qh = quota_open(fst[i].f_mntonname);
if (qh == NULL) {
err(1, "%s: quota_open", fst[i].f_mntonname);
}
for (j = 0; j < nids; j++) {
snprintf(idname, sizeof(idname), "%s %u",
idtype == QUOTA_IDTYPE_USER ?
"uid" : "gid", ids[j]);
qk.qk_idtype = idtype;
qk.qk_id = ids[j];
qk.qk_objtype = QUOTA_OBJTYPE_BLOCKS;
if (quota_delete(qh, &qk)) {
err(1, "%s: quota_delete (%s blocks)",
fst[i].f_mntonname, idname);
}
qk.qk_idtype = idtype;
qk.qk_id = ids[j];
qk.qk_objtype = QUOTA_OBJTYPE_FILES;
if (quota_delete(qh, &qk)) {
if (errno == ENOENT) {
/*
* XXX ignore this case; due
* to a weakness in the quota
* proplib interface it can
* appear spuriously.
*/
} else {
err(1, "%s: quota_delete (%s files)",
fst[i].f_mntonname, idname);
}
}
}
quota_close(qh);
}
free(ids);
}
////////////////////////////////////////////////////////////
// editor
/*
* Take a list of privileges and get it edited.
*/
static int
editit(const char *ltmpfile)
{
pid_t pid;
int lst;
char p[MAX_TMPSTR];
const char *ed;
sigset_t s, os;
sigemptyset(&s);
sigaddset(&s, SIGINT);
sigaddset(&s, SIGQUIT);
sigaddset(&s, SIGHUP);
if (sigprocmask(SIG_BLOCK, &s, &os) == -1)
err(1, "sigprocmask");
top:
switch ((pid = fork())) {
case -1:
if (errno == EPROCLIM) {
warnx("You have too many processes");
return 0;
}
if (errno == EAGAIN) {
sleep(1);
goto top;
}
warn("fork");
return 0;
case 0:
if (sigprocmask(SIG_SETMASK, &os, NULL) == -1)
err(1, "sigprocmask");
setgid(getgid());
setuid(getuid());
if ((ed = getenv("EDITOR")) == (char *)0)
ed = _PATH_VI;
if (strlen(ed) + strlen(ltmpfile) + 2 >= MAX_TMPSTR) {
errx(1, "%s", "editor or filename too long");
}
snprintf(p, sizeof(p), "%s %s", ed, ltmpfile);
execlp(_PATH_BSHELL, _PATH_BSHELL, "-c", p, NULL);
err(1, "%s", ed);
default:
if (waitpid(pid, &lst, 0) == -1)
err(1, "waitpid");
if (sigprocmask(SIG_SETMASK, &os, NULL) == -1)
err(1, "sigprocmask");
if (!WIFEXITED(lst) || WEXITSTATUS(lst) != 0)
return 0;
return 1;
}
}
/*
* Convert a quotause list to an ASCII file.
*/
static int
writeprivs(struct quotalist *qlist, int outfd, const char *name,
int idtype, const char *idtypename)
{
struct quotause *qup;
FILE *fd;
char b0[32], b1[32], b2[32], b3[32];
const char *comm;
(void)ftruncate(outfd, 0);
(void)lseek(outfd, (off_t)0, SEEK_SET);
if ((fd = fdopen(dup(outfd), "w")) == NULL)
errx(1, "fdopen");
if (name == NULL) {
fprintf(fd, "Default %s quotas:\n", idtypename);
} else {
fprintf(fd, "Quotas for %s %s:\n", idtypename, name);
}
for (qup = qlist->head; qup; qup = qup->next) {
struct quotaval *q = qup->qv;
fprintf(fd, "%s (%s):\n", qup->fsname, qup->implementation);
comm = source_is_real(qup->source[QO_BLK]) ? "" : "#";
fprintf(fd, "\tblocks:%s\n",
Hflag ? "" : " (sizes in 1K-blocks)");
fprintf(fd, "\t\t%susage: %s\n", comm,
intprt(b1, 21, q[QO_BLK].qv_usage,
HN_NOSPACE | HN_B, Hflag));
fprintf(fd, "\t\t%slimits: soft %s, hard %s\n", comm,
intprt(b2, 21, q[QO_BLK].qv_softlimit,
HN_NOSPACE | HN_B, Hflag),
intprt(b3, 21, q[QO_BLK].qv_hardlimit,
HN_NOSPACE | HN_B, Hflag));
if (qup->xgrace || qup->isdefault) {
fprintf(fd, "\t\t%sgrace: %s\n", comm,
timepprt(b0, 21, q[QO_BLK].qv_grace, Hflag));
}
comm = source_is_real(qup->source[QO_FL]) ? "" : "#";
fprintf(fd, "\tinodes:\n");
fprintf(fd, "\t\t%susage: %s\n", comm,
intprt(b1, 21, q[QO_FL].qv_usage,
HN_NOSPACE, Hflag));
fprintf(fd, "\t\t%slimits: soft %s, hard %s\n", comm,
intprt(b2, 21, q[QO_FL].qv_softlimit,
HN_NOSPACE, Hflag),
intprt(b3, 21, q[QO_FL].qv_hardlimit,
HN_NOSPACE, Hflag));
if (qup->xgrace || qup->isdefault) {
fprintf(fd, "\t\t%sgrace: %s\n", comm,
timepprt(b0, 21, q[QO_FL].qv_grace, Hflag));
}
}
fclose(fd);
return 1;
}
/*
* Merge changes to an ASCII file into a quotause list.
*/
static int
readprivs(struct quotalist *qlist, int infd, int dflag)
{
FILE *fd; /* file */
unsigned lineno; /* line number in file */
char line[BUFSIZ]; /* input buffer */
size_t len; /* length of input buffer */
bool seenheader; /* true if past the file header */
struct quotause *qup; /* current filesystem */
bool haveobjtype; /* true if objtype is valid */
unsigned objtype; /* current object type */
int objtypeflags; /* humanize flags */
/* XXX make following const later (requires non-local cleanup) */
/*const*/ char *text, *text2, *t; /* scratch values */
char b0[32], b1[32];
uint64_t soft, hard, current;
time_t grace;
struct quotaval *qv;
lineno = 0;
seenheader = false;
qup = NULL;
haveobjtype = false;
objtype = QUOTA_OBJTYPE_BLOCKS; /* for gcc 4.5 */
objtypeflags = HN_B;
(void)lseek(infd, (off_t)0, SEEK_SET);
fd = fdopen(dup(infd), "r");
if (fd == NULL) {
warn("Can't re-read temp file");
return -1;
}
/*
* Read back the same format we wrote.
*/
while (fgets(line, sizeof(line), fd)) {
lineno++;
if (!seenheader) {
if ((!strncmp(line, "Default ", 8) && dflag) ||
(!strncmp(line, "Quotas for ", 11) && !dflag)) {
/* ok. */
seenheader = 1;
continue;
}
warnx("Header line missing");
goto fail;
}
len = strlen(line);
if (len == 0) {
/* ? */
continue;
}
if (line[len - 1] != '\n') {
warnx("Line %u too long", lineno);
goto fail;
}
line[--len] = '\0';
if (line[len - 1] == '\r') {
line[--len] = '\0';
}
if (len == 0) {
/* blank line */
continue;
}
/*
* If the line has: it is:
* two tabs values
* one tab the next objtype
* no tabs the next filesystem
*/
if (line[0] == '\t' && line[1] == '\t') {
if (qup == NULL) {
warnx("Line %u: values with no filesystem",
lineno);
goto fail;
}
if (!haveobjtype) {
warnx("Line %u: values with no object type",
lineno);
goto fail;
}
qv = &qup->qv[objtype];
text = line + 2;
if (*text == '#') {
/* commented out; ignore */
continue;
}
else if (!strncmp(text, "usage:", 6)) {
/* usage: %llu */
text += 6;
t = skipws(text);
if (intrd(t, &current, objtypeflags) != 0) {
warnx("Line %u: Bad number %s",
lineno, t);
goto fail;
}
/*
* Because the humanization can lead
* to roundoff, check if the two
* values produce the same humanized
* string, rather than if they're the
* same number. Sigh.
*/
intprt(b0, 21, current,
HN_NOSPACE | objtypeflags, Hflag);
intprt(b1, 21, qv->qv_usage,
HN_NOSPACE | objtypeflags, Hflag);
if (strcmp(b0, b1)) {
warnx("Line %u: cannot change usage",
lineno);
}
continue;
} else if (!strncmp(text, "limits:", 7)) {
/* limits: soft %llu, hard %llu */
text += 7;
text2 = strchr(text, ',');
if (text2 == NULL) {
warnx("Line %u: expected comma",
lineno);
goto fail;
}
*text2 = '\0';
text2++;
t = skipws(text);
t = skipword(t);
t = skipws(t);
if (intrd(t, &soft, objtypeflags) != 0) {
warnx("Line %u: Bad number %s",
lineno, t);
goto fail;
}
t = skipws(text2);
t = skipword(t);
t = skipws(t);
if (intrd(t, &hard, objtypeflags) != 0) {
warnx("Line %u: Bad number %s",
lineno, t);
goto fail;
}
/*
* 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 (qv->qv_usage && qv->qv_usage >= soft &&
(qv->qv_softlimit == 0 ||
qv->qv_usage < qv->qv_softlimit)) {
qv->qv_expiretime = 0;
}
if (soft != qv->qv_softlimit ||
hard != qv->qv_hardlimit) {
qv->qv_softlimit = soft;
qv->qv_hardlimit = hard;
qup->source[objtype] = SRC_EDITED;
}
qup->found = 1;
} else if (!strncmp(text, "grace:", 6)) {
text += 6;
/* grace: %llu */
t = skipws(text);
if (timeprd(t, &grace) != 0) {
warnx("Line %u: Bad number %s",
lineno, t);
goto fail;
}
if (qup->isdefault || qup->xgrace) {
if (grace != qv->qv_grace) {
qv->qv_grace = grace;
qup->source[objtype] =
SRC_EDITED;
}
qup->found = 1;
} else {
warnx("Line %u: Cannot set individual "
"grace time on this filesystem",
lineno);
goto fail;
}
} else {
warnx("Line %u: Unknown/unexpected value line",
lineno);
goto fail;
}
} else if (line[0] == '\t') {
text = line + 1;
if (*text == '#') {
/* commented out; ignore */
continue;
}
else if (!strncmp(text, "blocks:", 7)) {
objtype = QUOTA_OBJTYPE_BLOCKS;
objtypeflags = HN_B;
haveobjtype = true;
} else if (!strncmp(text, "inodes:", 7)) {
objtype = QUOTA_OBJTYPE_FILES;
objtypeflags = 0;
haveobjtype = true;
} else {
warnx("Line %u: Unknown/unexpected object "
"type (%s)", lineno, text);
goto fail;
}
} else {
t = strchr(line, ' ');
if (t == NULL) {
t = strchr(line, ':');
if (t == NULL) {
t = line + len;
}
}
*t = '\0';
if (*line == '#') {
/* commented out; ignore */
continue;
}
for (qup = qlist->head; qup; qup = qup->next) {
if (!strcmp(line, qup->fsname))
break;
}
if (qup == NULL) {
warnx("Line %u: Filesystem %s invalid or has "
"no quota support", lineno, line);
goto fail;
}
haveobjtype = false;
}
}
fclose(fd);
/*
* Disable quotas for any filesystems that we didn't see,
* because they must have been deleted in the editor.
*
* XXX this should be improved so it results in
* quota_delete(), not just writing out a blank quotaval.
*/
for (qup = qlist->head; qup; qup = qup->next) {
if (qup->found) {
qup->found = 0;
continue;
}
if (source_is_real(qup->source[QUOTA_OBJTYPE_BLOCKS])) {
quotaval_clear(&qup->qv[QUOTA_OBJTYPE_BLOCKS]);
qup->source[QUOTA_OBJTYPE_BLOCKS] = SRC_EDITED;
}
if (source_is_real(qup->source[QUOTA_OBJTYPE_FILES])) {
quotaval_clear(&qup->qv[QUOTA_OBJTYPE_FILES]);
qup->source[QUOTA_OBJTYPE_FILES] = SRC_EDITED;
}
}
return 0;
fail:
sleep(3);
fclose(fd);
return -1;
}
////////////////////////////////////////////////////////////
// actions
static void
replicate(const char *fs, int idtype, const char *protoname,
char **names, int numnames)
{
long protoid, id;
struct quotalist *protoprivs;
struct quotause *qup;
int i;
if ((protoid = getidbyname(protoname, idtype)) == -1)
exit(1);
protoprivs = getprivs(protoid, 0, idtype, fs);
for (qup = protoprivs->head; qup; qup = qup->next) {
qup->qv[QO_BLK].qv_expiretime = 0;
qup->qv[QO_FL].qv_expiretime = 0;
qup->source[QO_BLK] = SRC_EDITED;
qup->source[QO_FL] = SRC_EDITED;
}
for (i=0; i<numnames; i++) {
id = getidbyname(names[i], idtype);
if (id == -1)
continue;
putprivs(id, idtype, protoprivs);
}
/* XXX */
/* quotalist_destroy(protoprivs); */
}
static void
assign(const char *fs, int idtype,
char *soft, char *hard, char *grace,
char **names, int numnames)
{
struct quotalist *curprivs;
struct quotause *lqup;
u_int64_t softb, hardb, softi, hardi;
time_t graceb, gracei;
char *str;
long id;
int dflag;
int i;
if (soft) {
str = strsep(&soft, "/");
if (str[0] == '\0' || soft == NULL || soft[0] == '\0')
usage();
if (intrd(str, &softb, HN_B) != 0)
errx(1, "%s: bad number", str);
if (intrd(soft, &softi, 0) != 0)
errx(1, "%s: bad number", soft);
}
if (hard) {
str = strsep(&hard, "/");
if (str[0] == '\0' || hard == NULL || hard[0] == '\0')
usage();
if (intrd(str, &hardb, HN_B) != 0)
errx(1, "%s: bad number", str);
if (intrd(hard, &hardi, 0) != 0)
errx(1, "%s: bad number", hard);
}
if (grace) {
str = strsep(&grace, "/");
if (str[0] == '\0' || grace == NULL || grace[0] == '\0')
usage();
if (timeprd(str, &graceb) != 0)
errx(1, "%s: bad number", str);
if (timeprd(grace, &gracei) != 0)
errx(1, "%s: bad number", grace);
}
for (i=0; i<numnames; i++) {
if (names[i] == NULL) {
id = 0;
dflag = 1;
} else {
id = getidbyname(names[i], idtype);
if (id == -1)
continue;
dflag = 0;
}
curprivs = getprivs(id, dflag, idtype, fs);
for (lqup = curprivs->head; lqup; lqup = lqup->next) {
struct quotaval *q = lqup->qv;
if (soft) {
if (!dflag && softb &&
q[QO_BLK].qv_usage >= softb &&
(q[QO_BLK].qv_softlimit == 0 ||
q[QO_BLK].qv_usage <
q[QO_BLK].qv_softlimit))
q[QO_BLK].qv_expiretime = 0;
if (!dflag && softi &&
q[QO_FL].qv_usage >= softb &&
(q[QO_FL].qv_softlimit == 0 ||
q[QO_FL].qv_usage <
q[QO_FL].qv_softlimit))
q[QO_FL].qv_expiretime = 0;
q[QO_BLK].qv_softlimit = softb;
q[QO_FL].qv_softlimit = softi;
}
if (hard) {
q[QO_BLK].qv_hardlimit = hardb;
q[QO_FL].qv_hardlimit = hardi;
}
if (grace) {
q[QO_BLK].qv_grace = graceb;
q[QO_FL].qv_grace = gracei;
}
lqup->source[QO_BLK] = SRC_EDITED;
lqup->source[QO_FL] = SRC_EDITED;
}
putprivs(id, idtype, curprivs);
quotalist_destroy(curprivs);
}
}
static void
clear(const char *fs, int idtype, char **names, int numnames)
{
clearpriv(numnames, names, fs, idtype);
}
static void
editone(const char *fs, int idtype, const char *name,
int tmpfd, const char *tmppath)
{
struct quotalist *curprivs;
long id;
int dflag;
if (name == NULL) {
id = 0;
dflag = 1;
} else {
id = getidbyname(name, idtype);
if (id == -1)
return;
dflag = 0;
}
curprivs = getprivs(id, dflag, idtype, fs);
if (writeprivs(curprivs, tmpfd, name, idtype,
curprivs->idtypename) == 0)
goto fail;
if (editit(tmppath) == 0)
goto fail;
if (readprivs(curprivs, tmpfd, dflag) < 0)
goto fail;
putprivs(id, idtype, curprivs);
fail:
quotalist_destroy(curprivs);
}
static void
edit(const char *fs, int idtype, char **names, int numnames)
{
char tmppath[] = _PATH_TMPFILE;
int tmpfd, i;
tmpfd = mkstemp(tmppath);
fchown(tmpfd, getuid(), getgid());
for (i=0; i<numnames; i++) {
editone(fs, idtype, names[i], tmpfd, tmppath);
}
close(tmpfd);
unlink(tmppath);
}
////////////////////////////////////////////////////////////
// main
static void
usage(void)
{
const char *p = getprogname();
fprintf(stderr,
"Usage: %s [-D] [-H] [-u] [-p <username>] [-f <filesystem>] "
"-d | <username> ...\n"
"\t%s [-D] [-H] -g [-p <groupname>] [-f <filesystem>] "
"-d | <groupname> ...\n"
"\t%s [-D] [-u] [-f <filesystem>] [-s b#/i#] [-h b#/i#] [-t t#/t#] "
"-d | <username> ...\n"
"\t%s [-D] -g [-f <filesystem>] [-s b#/i#] [-h b#/i#] [-t t#/t#] "
"-d | <groupname> ...\n"
"\t%s [-D] [-H] [-u] -c [-f <filesystem>] username ...\n"
"\t%s [-D] [-H] -g -c [-f <filesystem>] groupname ...\n",
p, p, p, p, p, p);
exit(1);
}
int
main(int argc, char *argv[])
{
int idtype;
char *protoname;
char *soft = NULL, *hard = NULL, *grace = NULL;
char *fs = NULL;
int ch;
int pflag = 0;
int cflag = 0;
int dflag = 0;
if (argc < 2)
usage();
if (getuid())
errx(1, "permission denied");
protoname = NULL;
idtype = QUOTA_IDTYPE_USER;
while ((ch = getopt(argc, argv, "Hcdugp:s:h:t:f:")) != -1) {
switch(ch) {
case 'H':
Hflag++;
break;
case 'c':
cflag++;
break;
case 'd':
dflag++;
break;
case 'p':
protoname = optarg;
pflag++;
break;
case 'g':
idtype = QUOTA_IDTYPE_GROUP;
break;
case 'u':
idtype = QUOTA_IDTYPE_USER;
break;
case 's':
soft = optarg;
break;
case 'h':
hard = optarg;
break;
case 't':
grace = optarg;
break;
case 'f':
fs = optarg;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (pflag) {
if (soft || hard || grace || dflag || cflag)
usage();
replicate(fs, idtype, protoname, argv, argc);
} else if (soft || hard || grace) {
if (cflag)
usage();
if (dflag) {
/* use argv[argc], which is null, to mean 'default' */
argc++;
}
assign(fs, idtype, soft, hard, grace, argv, argc);
} else if (cflag) {
if (dflag)
usage();
clear(fs, idtype, argv, argc);
} else {
if (dflag) {
/* use argv[argc], which is null, to mean 'default' */
argc++;
}
edit(fs, idtype, argv, argc);
}
return 0;
}
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