mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
369 lines
8.5 KiB
C
369 lines
8.5 KiB
C
/*-
|
|
* Copyright (c) 2005-2009 Stanislav Sedov <stas@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/queue.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/user.h>
|
|
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <libprocstat.h>
|
|
#include <limits.h>
|
|
#include <paths.h>
|
|
#include <pwd.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sysexits.h>
|
|
#include <unistd.h>
|
|
|
|
#include "functions.h"
|
|
|
|
/*
|
|
* File access mode flags table.
|
|
*/
|
|
static const struct {
|
|
int flag;
|
|
char ch;
|
|
} fflags[] = {
|
|
{PS_FST_FFLAG_WRITE, 'w'},
|
|
{PS_FST_FFLAG_APPEND, 'a'},
|
|
{PS_FST_FFLAG_DIRECT, 'd'},
|
|
{PS_FST_FFLAG_SHLOCK, 's'},
|
|
{PS_FST_FFLAG_EXLOCK, 'e'}
|
|
};
|
|
#define NFFLAGS (sizeof(fflags) / sizeof(*fflags))
|
|
|
|
/*
|
|
* Usage flags translation table.
|
|
*/
|
|
static const struct {
|
|
int flag;
|
|
char ch;
|
|
} uflags[] = {
|
|
{PS_FST_UFLAG_RDIR, 'r'},
|
|
{PS_FST_UFLAG_CDIR, 'c'},
|
|
{PS_FST_UFLAG_JAIL, 'j'},
|
|
{PS_FST_UFLAG_TRACE, 't'},
|
|
{PS_FST_UFLAG_TEXT, 'x'},
|
|
{PS_FST_UFLAG_MMAP, 'm'},
|
|
{PS_FST_UFLAG_CTTY, 'y'}
|
|
};
|
|
#define NUFLAGS (sizeof(uflags) / sizeof(*uflags))
|
|
|
|
struct consumer {
|
|
pid_t pid;
|
|
uid_t uid;
|
|
int fd;
|
|
int flags;
|
|
int uflags;
|
|
STAILQ_ENTRY(consumer) next;
|
|
};
|
|
struct reqfile {
|
|
uint32_t fsid;
|
|
uint64_t fileid;
|
|
const char *name;
|
|
STAILQ_HEAD(, consumer) consumers;
|
|
};
|
|
|
|
/*
|
|
* Option flags.
|
|
*/
|
|
#define UFLAG 0x01 /* -u flag: show users */
|
|
#define FFLAG 0x02 /* -f flag: specified files only */
|
|
#define CFLAG 0x04 /* -c flag: treat as mpoints */
|
|
#define MFLAG 0x10 /* -m flag: mmapped files too */
|
|
#define KFLAG 0x20 /* -k flag: send signal (SIGKILL by default) */
|
|
|
|
static int flags = 0; /* Option flags. */
|
|
|
|
static void printflags(struct consumer *consumer);
|
|
static int str2sig(const char *str);
|
|
static void usage(void) __dead2;
|
|
static int addfile(const char *path, struct reqfile *reqfile);
|
|
static void dofiles(struct procstat *procstat, struct kinfo_proc *kp,
|
|
struct reqfile *reqfiles, size_t nfiles);
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr,
|
|
"usage: fuser [-cfhkmu] [-M core] [-N system] [-s signal] file ...\n");
|
|
exit(EX_USAGE);
|
|
}
|
|
|
|
static void
|
|
printflags(struct consumer *cons)
|
|
{
|
|
unsigned int i;
|
|
|
|
assert(cons);
|
|
for (i = 0; i < NUFLAGS; i++)
|
|
if ((cons->uflags & uflags[i].flag) != 0)
|
|
fputc(uflags[i].ch, stderr);
|
|
for (i = 0; i < NFFLAGS; i++)
|
|
if ((cons->flags & fflags[i].flag) != 0)
|
|
fputc(fflags[i].ch, stderr);
|
|
}
|
|
|
|
/*
|
|
* Add file to the list.
|
|
*/
|
|
static int
|
|
addfile(const char *path, struct reqfile *reqfile)
|
|
{
|
|
struct stat sb;
|
|
|
|
assert(path);
|
|
if (stat(path, &sb) != 0) {
|
|
warn("%s", path);
|
|
return (1);
|
|
}
|
|
reqfile->fileid = sb.st_ino;
|
|
reqfile->fsid = sb.st_dev;
|
|
reqfile->name = path;
|
|
STAILQ_INIT(&reqfile->consumers);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
do_fuser(int argc, char *argv[])
|
|
{
|
|
struct consumer *consumer;
|
|
struct kinfo_proc *p, *procs;
|
|
struct procstat *procstat;
|
|
struct reqfile *reqfiles;
|
|
char *ep, *nlistf, *memf;
|
|
int ch, cnt, sig;
|
|
unsigned int i, nfiles;
|
|
|
|
sig = SIGKILL; /* Default to kill. */
|
|
nlistf = NULL;
|
|
memf = NULL;
|
|
while ((ch = getopt(argc, argv, "M:N:cfhkms:u")) != -1)
|
|
switch(ch) {
|
|
case 'f':
|
|
if ((flags & CFLAG) != 0)
|
|
usage();
|
|
flags |= FFLAG;
|
|
break;
|
|
case 'c':
|
|
if ((flags & FFLAG) != 0)
|
|
usage();
|
|
flags |= CFLAG;
|
|
break;
|
|
case 'N':
|
|
nlistf = optarg;
|
|
break;
|
|
case 'M':
|
|
memf = optarg;
|
|
break;
|
|
case 'u':
|
|
flags |= UFLAG;
|
|
break;
|
|
case 'm':
|
|
flags |= MFLAG;
|
|
break;
|
|
case 'k':
|
|
flags |= KFLAG;
|
|
break;
|
|
case 's':
|
|
if (isdigit(*optarg)) {
|
|
sig = strtol(optarg, &ep, 10);
|
|
if (*ep != '\0' || sig < 0 || sig >= sys_nsig)
|
|
errx(EX_USAGE, "illegal signal number" ": %s",
|
|
optarg);
|
|
} else {
|
|
sig = str2sig(optarg);
|
|
if (sig < 0)
|
|
errx(EX_USAGE, "illegal signal name: "
|
|
"%s", optarg);
|
|
}
|
|
break;
|
|
case 'h':
|
|
/* PASSTHROUGH */
|
|
default:
|
|
usage();
|
|
/* NORETURN */
|
|
}
|
|
argv += optind;
|
|
argc -= optind;
|
|
|
|
assert(argc >= 0);
|
|
if (argc == 0)
|
|
usage();
|
|
/* NORETURN */
|
|
|
|
/*
|
|
* Process named files.
|
|
*/
|
|
reqfiles = malloc(argc * sizeof(struct reqfile));
|
|
if (reqfiles == NULL)
|
|
err(EX_OSERR, "malloc()");
|
|
nfiles = 0;
|
|
while (argc--)
|
|
if (!addfile(*(argv++), &reqfiles[nfiles]))
|
|
nfiles++;
|
|
if (nfiles == 0)
|
|
errx(EX_IOERR, "files not accessible");
|
|
|
|
if (memf != NULL)
|
|
procstat = procstat_open_kvm(nlistf, memf);
|
|
else
|
|
procstat = procstat_open_sysctl();
|
|
if (procstat == NULL)
|
|
errx(1, "procstat_open()");
|
|
procs = procstat_getprocs(procstat, KERN_PROC_PROC, 0, &cnt);
|
|
if (procs == NULL)
|
|
errx(1, "procstat_getprocs()");
|
|
|
|
/*
|
|
* Walk through process table and look for matching files.
|
|
*/
|
|
p = procs;
|
|
while(cnt--)
|
|
if (p->ki_stat != SZOMB)
|
|
dofiles(procstat, p++, reqfiles, nfiles);
|
|
|
|
for (i = 0; i < nfiles; i++) {
|
|
fprintf(stderr, "%s:", reqfiles[i].name);
|
|
fflush(stderr);
|
|
STAILQ_FOREACH(consumer, &reqfiles[i].consumers, next) {
|
|
if (consumer->flags != 0) {
|
|
fprintf(stdout, "%6d", consumer->pid);
|
|
fflush(stdout);
|
|
printflags(consumer);
|
|
if ((flags & UFLAG) != 0)
|
|
fprintf(stderr, "(%s)",
|
|
user_from_uid(consumer->uid, 0));
|
|
if ((flags & KFLAG) != 0)
|
|
kill(consumer->pid, sig);
|
|
fflush(stderr);
|
|
}
|
|
}
|
|
(void)fprintf(stderr, "\n");
|
|
}
|
|
procstat_freeprocs(procstat, procs);
|
|
procstat_close(procstat);
|
|
free(reqfiles);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
dofiles(struct procstat *procstat, struct kinfo_proc *kp,
|
|
struct reqfile *reqfiles, size_t nfiles)
|
|
{
|
|
struct vnstat vn;
|
|
struct consumer *cons;
|
|
struct filestat *fst;
|
|
struct filestat_list *head;
|
|
int error, match;
|
|
unsigned int i;
|
|
char errbuf[_POSIX2_LINE_MAX];
|
|
|
|
head = procstat_getfiles(procstat, kp, flags & MFLAG);
|
|
if (head == NULL)
|
|
return;
|
|
STAILQ_FOREACH(fst, head, next) {
|
|
if (fst->fs_type != PS_FST_TYPE_VNODE)
|
|
continue;
|
|
error = procstat_get_vnode_info(procstat, fst, &vn, errbuf);
|
|
if (error != 0)
|
|
continue;
|
|
for (i = 0; i < nfiles; i++) {
|
|
if (flags & CFLAG && reqfiles[i].fsid == vn.vn_fsid) {
|
|
break;
|
|
}
|
|
else if (reqfiles[i].fsid == vn.vn_fsid &&
|
|
reqfiles[i].fileid == vn.vn_fileid) {
|
|
break;
|
|
}
|
|
else if (!(flags & FFLAG) &&
|
|
(vn.vn_type == PS_FST_VTYPE_VCHR ||
|
|
vn.vn_type == PS_FST_VTYPE_VBLK) &&
|
|
vn.vn_fsid == reqfiles[i].fileid) {
|
|
break;
|
|
}
|
|
}
|
|
if (i == nfiles)
|
|
continue; /* No match. */
|
|
|
|
/*
|
|
* Look for existing entries.
|
|
*/
|
|
match = 0;
|
|
STAILQ_FOREACH(cons, &reqfiles[i].consumers, next)
|
|
if (cons->pid == kp->ki_pid) {
|
|
match = 1;
|
|
break;
|
|
}
|
|
if (match == 1) { /* Use old entry. */
|
|
cons->flags |= fst->fs_fflags;
|
|
cons->uflags |= fst->fs_uflags;
|
|
} else {
|
|
/*
|
|
* Create new entry in the consumer chain.
|
|
*/
|
|
cons = calloc(1, sizeof(struct consumer));
|
|
if (cons == NULL) {
|
|
warn("malloc()");
|
|
continue;
|
|
}
|
|
cons->uid = kp->ki_uid;
|
|
cons->pid = kp->ki_pid;
|
|
cons->uflags = fst->fs_uflags;
|
|
cons->flags = fst->fs_fflags;
|
|
STAILQ_INSERT_TAIL(&reqfiles[i].consumers, cons, next);
|
|
}
|
|
}
|
|
procstat_freefiles(procstat, head);
|
|
}
|
|
|
|
/*
|
|
* Returns signal number for it's string representation.
|
|
*/
|
|
static int
|
|
str2sig(const char *str)
|
|
{
|
|
int i;
|
|
|
|
if (!strncasecmp(str, "SIG", 3))
|
|
str += 3;
|
|
for (i = 1; i < sys_nsig; i++) {
|
|
if (!strcasecmp(sys_signame[i], str))
|
|
return (i);
|
|
}
|
|
return (-1);
|
|
}
|