File Manager

003 File Manager

Current Path: /usr/src/lib/libc/gen

📁 ..
📄 Makefile.inc(11.75 KB)
📄 Symbol.map(8.61 KB)
📄 __getosreldate.c(2.34 KB)
📄 __pthread_mutex_init_calloc_cb_stub.c(1.78 KB)
📄 __xuname.c(3.54 KB)
📄 _once_stub.c(2.45 KB)
📄 _pthread_stubs.c(13.83 KB)
📄 _rand48.c(1.37 KB)
📄 _spinlock_stub.c(2.33 KB)
📄 _thread_init.c(1.74 KB)
📄 alarm.3(2.8 KB)
📄 alarm.c(2.1 KB)
📄 arc4random-compat.c(2.35 KB)
📄 arc4random.3(4.78 KB)
📄 arc4random.c(5.87 KB)
📄 arc4random.h(4.11 KB)
📄 arc4random_uniform.c(1.77 KB)
📄 assert.c(2.12 KB)
📄 auxv.3(3.28 KB)
📄 auxv.c(8.11 KB)
📄 basename.3(2.22 KB)
📄 basename.c(1.91 KB)
📄 basename_compat.c(2.18 KB)
📄 cap_rights_get.3(3.53 KB)
📄 cap_sandboxed.3(2.45 KB)
📄 cap_sandboxed.c(1.79 KB)
📄 check_utility_compat.3(2.99 KB)
📄 check_utility_compat.c(2.3 KB)
📄 clock.3(2.59 KB)
📄 clock.c(2.16 KB)
📄 clock_getcpuclockid.3(3.31 KB)
📄 clock_getcpuclockid.c(1.67 KB)
📄 closedir.c(2.38 KB)
📄 confstr.3(3.6 KB)
📄 confstr.c(3.78 KB)
📄 crypt.c(3.13 KB)
📄 ctermid.3(3.03 KB)
📄 ctermid.c(2.21 KB)
📄 daemon.3(3.92 KB)
📄 daemon.c(3.09 KB)
📄 devname-compat11.c(1.79 KB)
📄 devname.3(3.25 KB)
📄 devname.c(2.41 KB)
📄 directory.3(8.7 KB)
📄 dirfd.c(1.62 KB)
📄 dirname.3(2.22 KB)
📄 dirname.c(2.29 KB)
📄 dirname_compat.c(2.05 KB)
📄 disklabel.c(4.86 KB)
📄 dl_iterate_phdr.3(3.27 KB)
📄 dladdr.3(3.92 KB)
📄 dlfcn.c(6.44 KB)
📄 dlinfo.3(7.14 KB)
📄 dllockinit.3(3.9 KB)
📄 dlopen.3(11.35 KB)
📄 drand48.c(605 B)
📄 dup3.3(2.74 KB)
📄 dup3.c(1.96 KB)
📄 elf_utils.c(3.67 KB)
📄 erand48.c(691 B)
📄 err.3(5.79 KB)
📄 err.c(4.35 KB)
📄 errlst.c(8.3 KB)
📄 errno.c(1.45 KB)
📄 eventfd.c(1.79 KB)
📄 exec.3(9.24 KB)
📄 exec.c(7 KB)
📄 exect.c(1.61 KB)
📄 fdevname.c(1.83 KB)
📄 feature_present.3(2.48 KB)
📄 feature_present.c(2.26 KB)
📄 fmtcheck.3(3.27 KB)
📄 fmtcheck.c(6.92 KB)
📄 fmtmsg.3(6.45 KB)
📄 fmtmsg.c(5.86 KB)
📄 fnmatch.3(4.11 KB)
📄 fnmatch.c(8.85 KB)
📄 fpclassify.3(3.11 KB)
📄 fpclassify.c(2.67 KB)
📄 frexp.3(2.76 KB)
📄 frexp.c(1.88 KB)
📄 fstab.c(6.85 KB)
📄 ftok.3(2.71 KB)
📄 ftok.c(1.83 KB)
📄 fts-compat.c(32.07 KB)
📄 fts-compat.h(5.28 KB)
📄 fts-compat11.c(31.65 KB)
📄 fts-compat11.h(3.85 KB)
📄 fts.3(19.27 KB)
📄 fts.c(30.66 KB)
📄 ftw-compat11.c(2.59 KB)
📄 ftw.3(5.7 KB)
📄 ftw.c(2.28 KB)
📄 gen-compat.h(2.35 KB)
📄 gen-private.h(2.64 KB)
📄 getbootfile.3(2.57 KB)
📄 getbootfile.c(2.01 KB)
📄 getbsize.3(3.05 KB)
📄 getbsize.c(3 KB)
📄 getcap.3(14.8 KB)
📄 getcap.c(22.93 KB)
📄 getcontext.3(4.92 KB)
📄 getcwd.3(4.08 KB)
📄 getcwd.c(5.61 KB)
📄 getdiskbyname.3(2.23 KB)
📄 getdomainname.3(2.94 KB)
📄 getdomainname.c(1.98 KB)
📄 getentropy.3(2.05 KB)
📄 getentropy.c(4.09 KB)
📄 getfsent.3(4.54 KB)
📄 getgrent.3(6.7 KB)
📄 getgrent.c(34.33 KB)
📄 getgrouplist.3(2.81 KB)
📄 getgrouplist.c(2.03 KB)
📄 gethostname.3(3.58 KB)
📄 gethostname.c(2.02 KB)
📄 getloadavg.3(2.44 KB)
📄 getloadavg.c(2.39 KB)
📄 getlogin.c(2.65 KB)
📄 getmntinfo-compat11.c(2.61 KB)
📄 getmntinfo.3(3.1 KB)
📄 getmntinfo.c(2.57 KB)
📄 getnetgrent.3(4.02 KB)
📄 getnetgrent.c(24.86 KB)
📄 getosreldate.3(2.48 KB)
📄 getosreldate.c(2.09 KB)
📄 getpagesize.3(2.17 KB)
📄 getpagesize.c(2.46 KB)
📄 getpagesizes.3(2.94 KB)
📄 getpagesizes.c(2.99 KB)
📄 getpass.3(3 KB)
📄 getpeereid.3(3.36 KB)
📄 getpeereid.c(1.95 KB)
📄 getprogname.3(3.1 KB)
📄 getprogname.c(249 B)
📄 getpwent.3(7.67 KB)
📄 getpwent.c(44.7 KB)
📄 getttyent.3(5.75 KB)
📄 getttyent.c(6.7 KB)
📄 getusershell.3(2.86 KB)
📄 getusershell.c(5.74 KB)
📄 getutxent.3(11.32 KB)
📄 getutxent.c(4.89 KB)
📄 getvfsbyname.3(3.44 KB)
📄 getvfsbyname.c(3.1 KB)
📄 glob-compat11.c(25.67 KB)
📄 glob-compat11.h(2.8 KB)
📄 glob.3(10.79 KB)
📄 glob.c(26.49 KB)
📄 initgroups.3(2.62 KB)
📄 initgroups.c(2.33 KB)
📄 isatty.c(1.84 KB)
📄 isgreater.3(2.86 KB)
📄 isinf.c(2.14 KB)
📄 isnan.c(2.36 KB)
📄 jrand48.c(662 B)
📄 lcong48.c(832 B)
📄 ldexp.3(2.47 KB)
📄 ldexp.c(2.89 KB)
📄 libc_dlopen.c(1.88 KB)
📄 lockf.3(7.27 KB)
📄 lockf.c(2.55 KB)
📄 lrand48.c(670 B)
📄 makecontext.3(4.25 KB)
📄 memalign.c(1.63 KB)
📄 modf.3(2.63 KB)
📄 modf.c(2.95 KB)
📄 mrand48.c(709 B)
📄 nftw-compat11.c(2.91 KB)
📄 nftw.c(2.71 KB)
📄 nice.3(2.92 KB)
📄 nice.c(2.14 KB)
📄 nlist.3(2.55 KB)
📄 nlist.c(7.54 KB)
📄 nrand48.c(628 B)
📄 opendir.c(8.52 KB)
📄 pause.3(2.36 KB)
📄 pause.c(2.01 KB)
📄 pmadvise.c(425 B)
📄 popen.3(4.86 KB)
📄 popen.c(6 KB)
📄 posix_spawn.3(14.35 KB)
📄 posix_spawn.c(14.04 KB)
📄 posix_spawn_file_actions_addopen.3(6.28 KB)
📄 posix_spawn_file_actions_init.3(3.78 KB)
📄 posix_spawnattr_getflags.3(3.81 KB)
📄 posix_spawnattr_getpgroup.3(3.45 KB)
📄 posix_spawnattr_getschedparam.3(3.69 KB)
📄 posix_spawnattr_getschedpolicy.3(3.63 KB)
📄 posix_spawnattr_getsigdefault.3(3.65 KB)
📄 posix_spawnattr_getsigmask.3(3.56 KB)
📄 posix_spawnattr_init.3(4.09 KB)
📄 psignal.3(3.18 KB)
📄 psignal.c(2.22 KB)
📄 pututxline.c(7.34 KB)
📄 pw_scan.c(6.3 KB)
📄 pw_scan.h(1.8 KB)
📄 raise.3(2.31 KB)
📄 raise.c(1.96 KB)
📄 rand48.3(4.56 KB)
📄 rand48.h(811 B)
📄 readdir-compat11.c(3.63 KB)
📄 readdir.c(3.91 KB)
📄 readpassphrase.3(4.77 KB)
📄 readpassphrase.c(5.65 KB)
📄 recvmmsg.c(2.83 KB)
📄 rewinddir.c(2.29 KB)
📄 rfork_thread.3(2.7 KB)
📄 scandir-compat11.c(4.89 KB)
📄 scandir.3(3.86 KB)
📄 scandir.c(4.8 KB)
📄 scandir_b.c(1.38 KB)
📄 seed48.c(1 KB)
📄 seekdir.c(2.17 KB)
📄 sem.c(11.4 KB)
📄 sem_destroy.3(2.51 KB)
📄 sem_getvalue.3(2.56 KB)
📄 sem_init.3(2.81 KB)
📄 sem_new.c(9.95 KB)
📄 sem_open.3(5.37 KB)
📄 sem_post.3(2.45 KB)
📄 sem_timedwait.3(5 KB)
📄 sem_wait.3(2.73 KB)
📄 semctl.c(2.67 KB)
📄 sendmmsg.c(2.1 KB)
📄 setdomainname.c(1.97 KB)
📄 sethostname.c(1.96 KB)
📄 setjmp.3(4.48 KB)
📄 setjmperr.c(2.11 KB)
📄 setmode.3(3.56 KB)
📄 setmode.c(11.38 KB)
📄 setproctitle.3(3.54 KB)
📄 setproctitle.c(4.87 KB)
📄 setprogname.c(273 B)
📄 siginterrupt.3(3.74 KB)
📄 siginterrupt.c(2.29 KB)
📄 siglist.c(3.49 KB)
📄 signal.3(9.11 KB)
📄 signal.c(2.17 KB)
📄 sigsetops.3(4.15 KB)
📄 sigsetops.c(3.04 KB)
📄 sleep.3(2.88 KB)
📄 sleep.c(2.61 KB)
📄 srand48.c(859 B)
📄 statvfs.3(4.96 KB)
📄 statvfs.c(3.82 KB)
📄 stringlist.3(3.14 KB)
📄 stringlist.c(2.74 KB)
📄 strtofflags.3(2.96 KB)
📄 strtofflags.c(4.78 KB)
📄 sysconf.3(8.75 KB)
📄 sysconf.c(15.62 KB)
📄 sysctl.3(28.37 KB)
📄 sysctl.c(5.35 KB)
📄 sysctlbyname.c(1.81 KB)
📄 sysctlnametomib.c(2.14 KB)
📄 syslog.3(7.35 KB)
📄 syslog.c(12.21 KB)
📄 tcgetpgrp.3(2.6 KB)
📄 tcgetsid.3(2.24 KB)
📄 tcgetwinsize.3(4.62 KB)
📄 tcsendbreak.3(4.75 KB)
📄 tcsetattr.3(8.86 KB)
📄 tcsetpgrp.3(3.09 KB)
📄 tcsetsid.3(2.83 KB)
📄 telldir.c(5.62 KB)
📄 telldir.h(3.84 KB)
📄 termios.c(5.63 KB)
📄 time.3(2.94 KB)
📄 time.c(1.93 KB)
📄 times.3(3.62 KB)
📄 times.c(2.49 KB)
📄 timespec_get.3(2.52 KB)
📄 timespec_get.c(1.92 KB)
📄 timezone.3(2.29 KB)
📄 timezone.c(3.94 KB)
📄 tls.c(12.39 KB)
📄 trivial-getcontextx.c(1.97 KB)
📄 ttyname.3(3.39 KB)
📄 ttyname.c(3.24 KB)
📄 ttyslot.c(1.8 KB)
📄 tzset.3(7.41 KB)
📄 ualarm.3(2.88 KB)
📄 ualarm.c(2.33 KB)
📄 ucontext.3(3.57 KB)
📄 ulimit.3(2.8 KB)
📄 ulimit.c(2.25 KB)
📄 uname.3(3.14 KB)
📄 uname.c(1.91 KB)
📄 unvis-compat.c(1.89 KB)
📄 usleep.3(2.75 KB)
📄 usleep.c(2.2 KB)
📄 utime.3(2.74 KB)
📄 utime.c(2 KB)
📄 utxdb.c(4.56 KB)
📄 utxdb.h(2.2 KB)
📄 valloc.3(2.37 KB)
📄 valloc.c(1.85 KB)
📄 wait.c(2.1 KB)
📄 wait3.c(2.13 KB)
📄 waitid.c(2.49 KB)
📄 waitpid.c(2.15 KB)
📄 wordexp.3(5.04 KB)
📄 wordexp.c(10.48 KB)

Editing: pututxline.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2010 Ed Schouten <ed@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 "namespace.h"
#include <sys/endian.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <utmpx.h>
#include "utxdb.h"
#include "un-namespace.h"

static FILE *
futx_open(const char *file)
{
	FILE *fp;
	struct stat sb;
	int fd;

fd = _open(file, O_CREAT|O_RDWR|O_EXLOCK|O_CLOEXEC, 0644);
	if (fd < 0)
		return (NULL);

/* Safety check: never use broken files. */
	if (_fstat(fd, &sb) != -1 && sb.st_size % sizeof(struct futx) != 0) {
		_close(fd);
		errno = EFTYPE;
		return (NULL);
	}

fp = fdopen(fd, "r+");
	if (fp == NULL) {
		_close(fd);
		return (NULL);
	}
	return (fp);
}

static int
utx_active_add(const struct futx *fu)
{
	FILE *fp;
	struct futx fe;
	off_t partial;
	int error, ret;

partial = -1;
	ret = 0;

/*
	 * Register user login sessions.  Overwrite entries of sessions
	 * that have already been terminated.
	 */
	fp = futx_open(_PATH_UTX_ACTIVE);
	if (fp == NULL)
		return (-1);
	while (fread(&fe, sizeof(fe), 1, fp) == 1) {
		switch (fe.fu_type) {
		case BOOT_TIME:
			/* Leave these intact. */
			break;
		case USER_PROCESS:
		case INIT_PROCESS:
		case LOGIN_PROCESS:
		case DEAD_PROCESS:
			/* Overwrite when ut_id matches. */
			if (memcmp(fu->fu_id, fe.fu_id, sizeof(fe.fu_id)) ==
			    0) {
				ret = fseeko(fp, -(off_t)sizeof(fe), SEEK_CUR);
				goto exact;
			}
			if (fe.fu_type != DEAD_PROCESS)
				break;
			/* FALLTHROUGH */
		default:
			/* Allow us to overwrite unused records. */
			if (partial == -1) {
				partial = ftello(fp);
				/*
				 * Distinguish errors from valid values so we
				 * don't overwrite good data by accident.
				 */
				if (partial != -1)
					partial -= (off_t)sizeof(fe);
			}
			break;
		}
	}

/*
	 * No exact match found.  Use the partial match.  If no partial
	 * match was found, just append a new record.
	 */
	if (partial != -1)
		ret = fseeko(fp, partial, SEEK_SET);
exact:
	if (ret == -1)
		error = errno;
	else if (fwrite(fu, sizeof(*fu), 1, fp) < 1)
		error = errno;
	else
		error = 0;
	fclose(fp);
	if (error != 0)
		errno = error;
	return (error == 0 ? 0 : 1);
}

static int
utx_active_remove(struct futx *fu)
{
	FILE *fp;
	struct futx fe;
	int error, ret;

/*
	 * Remove user login sessions, having the same ut_id.
	 */
	fp = futx_open(_PATH_UTX_ACTIVE);
	if (fp == NULL)
		return (-1);
	error = ESRCH;
	ret = -1;
	while (fread(&fe, sizeof(fe), 1, fp) == 1 && ret != 0)
		switch (fe.fu_type) {
		case USER_PROCESS:
		case INIT_PROCESS:
		case LOGIN_PROCESS:
			if (memcmp(fu->fu_id, fe.fu_id, sizeof(fe.fu_id)) != 0)
				continue;

/* Terminate session. */
			if (fseeko(fp, -(off_t)sizeof(fe), SEEK_CUR) == -1)
				error = errno;
			else if (fwrite(fu, sizeof(*fu), 1, fp) < 1)
				error = errno;
			else
				ret = 0;

}

fclose(fp);
	if (ret != 0)
		errno = error;
	return (ret);
}

static void
utx_active_init(const struct futx *fu)
{
	int fd;

/* Initialize utx.active with a single BOOT_TIME record. */
	fd = _open(_PATH_UTX_ACTIVE, O_CREAT|O_RDWR|O_TRUNC, 0644);
	if (fd < 0)
		return;
	_write(fd, fu, sizeof(*fu));
	_close(fd);
}

static void
utx_active_purge(void)
{

truncate(_PATH_UTX_ACTIVE, 0);
}

static int
utx_lastlogin_add(const struct futx *fu)
{
	struct futx fe;
	FILE *fp;
	int error, ret;

ret = 0;

/*
	 * Write an entry to lastlogin.  Overwrite the entry if the
	 * current user already has an entry.  If not, append a new
	 * entry.
	 */
	fp = futx_open(_PATH_UTX_LASTLOGIN);
	if (fp == NULL)
		return (-1);
	while (fread(&fe, sizeof fe, 1, fp) == 1) {
		if (strncmp(fu->fu_user, fe.fu_user, sizeof fe.fu_user) != 0)
			continue;

/* Found a previous lastlogin entry for this user. */
		ret = fseeko(fp, -(off_t)sizeof fe, SEEK_CUR);
		break;
	}
	if (ret == -1)
		error = errno;
	else if (fwrite(fu, sizeof *fu, 1, fp) < 1) {
		error = errno;
		ret = -1;
	}
	fclose(fp);
	if (ret == -1)
		errno = error;
	return (ret);
}

static void
utx_lastlogin_upgrade(void)
{
	struct stat sb;
	int fd;

fd = _open(_PATH_UTX_LASTLOGIN, O_RDWR|O_CLOEXEC, 0644);
	if (fd < 0)
		return;

/*
	 * Truncate broken lastlogin files.  In the future we should
	 * check for older versions of the file format here and try to
	 * upgrade it.
	 */
	if (_fstat(fd, &sb) != -1 && sb.st_size % sizeof(struct futx) != 0)
		ftruncate(fd, 0);
	_close(fd);
}

static int
utx_log_add(const struct futx *fu)
{
	struct iovec vec[2];
	int error, fd;
	uint16_t l;

/*
	 * Append an entry to the log file.  We only need to append
	 * records to this file, so to conserve space, trim any trailing
	 * zero-bytes.  Prepend a length field, indicating the length of
	 * the record, excluding the length field itself.
	 */
	for (l = sizeof(*fu); l > 0 && ((const char *)fu)[l - 1] == '\0'; l--) ;
	vec[0].iov_base = &l;
	vec[0].iov_len = sizeof(l);
	vec[1].iov_base = __DECONST(void *, fu);
	vec[1].iov_len = l;
	l = htobe16(l);

fd = _open(_PATH_UTX_LOG, O_CREAT|O_WRONLY|O_APPEND|O_CLOEXEC, 0644);
	if (fd < 0)
		return (-1);
	if (_writev(fd, vec, 2) == -1)
		error = errno;
	else
		error = 0;
	_close(fd);
	if (error != 0)
		errno = error;
	return (error == 0 ? 0 : 1);
}

struct utmpx *
pututxline(const struct utmpx *utmpx)
{
	struct futx fu;
	int bad;

bad = 0;

utx_to_futx(utmpx, &fu);

switch (fu.fu_type) {
	case BOOT_TIME:
		utx_active_init(&fu);
		utx_lastlogin_upgrade();
		break;
	case SHUTDOWN_TIME:
		utx_active_purge();
		break;
	case OLD_TIME:
	case NEW_TIME:
		break;
	case USER_PROCESS:
		bad |= utx_active_add(&fu);
		bad |= utx_lastlogin_add(&fu);
		break;
#if 0 /* XXX: Are these records of any use to us? */
	case INIT_PROCESS:
	case LOGIN_PROCESS:
		bad |= utx_active_add(&fu);
		break;
#endif
	case DEAD_PROCESS:
		/*
		 * In case writing a logout entry fails, never attempt
		 * to write it to utx.log.  The logout entry's ut_id
		 * might be invalid.
		 */
		if (utx_active_remove(&fu) != 0)
			return (NULL);
		break;
	default:
		errno = EINVAL;
		return (NULL);
	}

bad |= utx_log_add(&fu);
	return (bad ? NULL : futx_to_utx(&fu));
}

003 File Manager

Editing: pututxline.c

Upload File

Create Folder