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authorRoland McGrath <roland@gnu.org>1996-05-29 04:48:04 +0000
committerRoland McGrath <roland@gnu.org>1996-05-29 04:48:04 +0000
commit0200214b288810fc261b0b65c32f7068fcfa9b40 (patch)
treea488a0a435ccf62b0870121b839b08de0d37a9b5 /login
parent215dbbb1508bd6b86211112dd5ddaf9bd2290690 (diff)
downloadglibc-0200214b288810fc261b0b65c32f7068fcfa9b40.zip
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Tue May 28 04:38:10 1996 Ulrich Drepper <drepper@cygnus.com>
* limits.h: Change MB_LEN_MAX to 6. A 31-bit ISO 10646 character in UTF-8 encoding has that many bytes. * locale/langinfo.h: New element _NL_CTYPE_MB_CUR_MAX. * locale/categories.def: Add description of field _NL_CTYPE_MB_CUR_MAX. * locale/Makefile (routines): Add mb_cur_max. * locale/mb_cur_max.c: New file. This function gets called when the macro MB_CUR_MAX is used. * locale/C-ctype.c: Initialize new mb_cur_max field. * locale/localeinfo.h: Change magic value because of incompatible change. * locale/programs/ld-ctype.c: Determine value of mb_cur_max according to current character set and write it out with the rest. * stdlib/stdlib.h (MB_CUR_MAX): Not constant anymore. Get value according to currently used locale for catefory LC_CTYPE by calling the function __ctype_get_mb_cur_max. Tue May 28 03:27:46 1996 Ulrich Drepper <drepper@cygnus.com> * FAQ: Fix some typos. Tell that for Linux the kernel header files are necessary. * PROJECTS: New file. List of open jobs for glibc. * Makefile (distribute): Add PROJECTS. * crypt/GNUmakefile (headers): New variable. Mention crypt.h. * crypt/crypt.h: Header for crypt functions. * elf/elf.h: Add some new constants from recent Cygnus ELF header files. * login/getutid_r.c: Test for correct type. Don't depend on ut_type and ut_id unless _HAVE_UT_TYPE and _HAVE_UT_ID resp. are defined. Make really compliant with specification. * login/getutline_r.c, login/pututline_r.c: Don't depend on ut_type and ut_id unless _HAVE_UT_TYPE and _HAVE_UT_ID resp. are defined. Make really compliant with specification. * login/setutent_r.c: Don't depend on ut_type and ut_id unless _HAVE_UT_TYPE and _HAVE_UT_ID resp. are defined. * login/login.c, login/logout.c, login/logwtmp.c: Complete rewrite. Now based on getut*/setut* functions. * stdlib/strtol.c: Undo changes of Wed May 22 01:48:54 1996. This prevented using this file in other GNU packages. * sysdeps/gnu/utmpbits.h: Define _HAVE_UT_TYPE, _HAVE_UT_ID, and _HAVE_UT_TV because struct utmp has these members. * sysdeps/libm-i387/e_exp.S: Correct exp(+-Inf) case. * utmp.h: New file. Wrapper around login/utmp.h. * elf/dl-error.c (struct catch): New type. (catch): New static variable, struct catch *. (catch_env, signalled_errstring, signalled_objname): Variables removed. (_dl_signal_error): If CATCH is non-null, set its errstring and objname members and jump to CATCH->env. If it is null, call _dl_sysdep_fatal with a standard message. * elf/rtld.c (dl_main): Explode `doit' function into dl_main's body. No longer use _dl_catch_error.
Diffstat (limited to 'login')
-rw-r--r--login/getutid_r.c34
-rw-r--r--login/getutline_r.c23
-rw-r--r--login/login.c148
-rw-r--r--login/logout.c121
-rw-r--r--login/logwtmp.c111
-rw-r--r--login/pututline_r.c56
-rw-r--r--login/setutent_r.c4
7 files changed, 304 insertions, 193 deletions
diff --git a/login/getutid_r.c b/login/getutid_r.c
index 351f96e..02013c2 100644
--- a/login/getutid_r.c
+++ b/login/getutid_r.c
@@ -18,6 +18,7 @@ not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
+#include <string.h>
#include <unistd.h>
#include <utmp.h>
@@ -28,6 +29,18 @@ int
getutid_r (const struct utmp *id, struct utmp **utmp,
struct utmp_data *utmp_data)
{
+#if (_HAVE_UT_ID - 0) && (_HAVE_UT_TYPE - 0)
+ /* Test whether ID has any of the legal types. */
+ if (id->ut_type != RUN_LVL && id->ut_type != BOOT_TIME
+ && id->ut_type != OLD_TIME && id->ut_type != NEW_TIME
+ && id->ut_type != INIT_PROCESS && id->ut_type != LOGIN_PROCESS
+ && id->ut_type != USER_PROCESS && id->ut_type != DEAD_PROCESS)
+ /* No, using '<' and '>' for the test is not possible. */
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
/* Open utmp file if not already done. */
if (utmp_data->ut_fd == -1)
{
@@ -40,7 +53,7 @@ getutid_r (const struct utmp *id, struct utmp **utmp,
if (lseek (utmp_data->ut_fd, utmp_data->loc_utmp, SEEK_SET) == -1)
return -1;
- do
+ while (1)
{
/* Read the next entry. */
if (read (utmp_data->ut_fd, &utmp_data->ubuf, sizeof (struct utmp))
@@ -52,10 +65,27 @@ getutid_r (const struct utmp *id, struct utmp **utmp,
/* Update position pointer. */
utmp_data->loc_utmp += sizeof (struct utmp);
+
+ if ((id->ut_type == RUN_LVL || id->ut_type == BOOT_TIME
+ || id->ut_type == OLD_TIME || id->ut_type == NEW_TIME)
+ && id->ut_type != utmp_data->ubuf.ut_type)
+ /* Stop at the next entry with type RUN_LVL, BOOT_TIME,
+ OLD_TIME, or NEW_TIME. */
+ break;
+
+ if ((id->ut_type == INIT_PROCESS || id->ut_type == LOGIN_PROCESS
+ || id->ut_type == USER_PROCESS || id->ut_type == DEAD_PROCESS)
+ && strncmp (id->ut_id, utmp_data->ubuf.ut_id, sizeof id->ut_id) == 0)
+ /* Stop at the next entry with the specified ID and with type
+ INIT_PROCESS, LOGIN_PROCESS, USER_PROCESS, or DEAD_PROCESS. */
+ break;
}
- while (id->ut_type != utmp_data->ubuf.ut_type);
*utmp = &utmp_data->ubuf;
return 0;
+#else /* !_HAVE_UT_ID && !_HAVE_UT_TYPE */
+ errno = ENOSYS;
+ return -1;
+#endif
}
diff --git a/login/getutline_r.c b/login/getutline_r.c
index 8df4878..0956164 100644
--- a/login/getutline_r.c
+++ b/login/getutline_r.c
@@ -18,9 +18,9 @@ not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
+#include <string.h>
#include <unistd.h>
#include <utmp.h>
-#include <string.h>
/* For implementing this function we don't use the getutent_r function
@@ -41,7 +41,7 @@ getutline_r (const struct utmp *line, struct utmp **utmp,
if (lseek (utmp_data->ut_fd, utmp_data->loc_utmp, SEEK_SET) == -1)
return -1;
- do
+ while (1)
{
/* Read the next entry. */
if (read (utmp_data->ut_fd, &utmp_data->ubuf, sizeof (struct utmp))
@@ -53,9 +53,24 @@ getutline_r (const struct utmp *line, struct utmp **utmp,
/* Update position pointer. */
utmp_data->loc_utmp += sizeof (struct utmp);
+
+#if _HAVE_UT_TYPE - 0
+ if (utmp_data->ubuf.ut_type == USER_PROCESS
+ && strncmp (line->ut_line, utmp_data->ubuf.ut_line,
+ sizeof line->ut_line) == 0)
+ /* Stop if we found an user entry. */
+ break;
+
+ if (utmp_data->ubuf.ut_type == LOGIN_PROCESS)
+ /* Stop if we found a login entry. */
+ break;
+#else /* !_HAVE_UT_TYPE */
+ if (strncmp (line->ut_line, utmp_data->ubuf.ut_line,
+ sizeof line->ut_line) == 0)
+ /* Stop if the line match. */
+ break;
+#endif
}
- while (strncmp (line->ut_line, utmp_data->ubuf.ut_line,
- sizeof line->ut_line));
*utmp = &utmp_data->ubuf;
diff --git a/login/login.c b/login/login.c
index 5b71082..f74ce41 100644
--- a/login/login.c
+++ b/login/login.c
@@ -1,63 +1,101 @@
-/*
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. 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.
- * 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)login.c 8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-
-#include <fcntl.h>
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
#include <unistd.h>
-#include <stdlib.h>
#include <utmp.h>
-#include <stdio.h>
+
void
-login(ut)
- const struct utmp *ut;
+login (const struct utmp *ut)
{
- register int fd;
- int tty;
-
- tty = ttyslot();
- if (tty > 0 && (fd = open(_PATH_UTMP, O_WRONLY|O_CREAT, 0644)) >= 0) {
- (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), L_SET);
- (void)write(fd, ut, sizeof(struct utmp));
- (void)close(fd);
+ char tty[PATH_MAX + UT_LINESIZE];
+ int found_tty;
+ const char *ttyp;
+ struct utmp_data data;
+
+ /* Seek tty. */
+ found_tty = ttyname_r (STDIN_FILENO, tty, sizeof tty);
+ if (found_tty < 0)
+ found_tty = ttyname_r (STDOUT_FILENO, tty, sizeof tty);
+ if (found_tty < 0)
+ found_tty = ttyname_r (STDERR_FILENO, tty, sizeof tty);
+
+ if (found_tty >= 0)
+ {
+ /* Tell that we want to use the UTMP file. */
+ if (utmpname (_PATH_UTMP) != 0)
+ {
+ struct utmp tmp;
+ struct utmp *old;
+
+ /* Open UTMP file. */
+ setutent_r (&data);
+
+ /* We only want to insert the name of the tty without path. */
+ ttyp = basename (tty);
+
+ /* Position to record for this tty. */
+#if _HAVE_UT_TYPE - 0
+ tmp.ut_type = USER_PROCESS;
+#endif
+ strncpy (tmp.ut_line, ttyp, UT_LINESIZE);
+
+ /* Read the record. */
+ if (getutline_r (&tmp, &old, &data) >= 0 || errno == ESRCH)
+ {
+#if _HAVE_UT_TYPE - 0
+ /* We have to fake the old entry because this `login'
+ function does not fit well into the UTMP file
+ handling scheme. */
+ old->ut_type = ut->ut_type;
+#endif
+ pututline_r (ut, &data);
+ }
+
+ /* Close UTMP file. */
+ endutent_r (&data);
}
- if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) {
- (void)write(fd, ut, sizeof(struct utmp));
- (void)close(fd);
+ }
+
+ /* Update the WTMP file. Here we have to add a new entry. */
+ if (utmpname (_PATH_WTMP) != 0)
+ {
+ /* Open the WTMP file. */
+ setutent_r (&data);
+
+ /* Position at end of file. */
+ data.loc_utmp = lseek (data.ut_fd, 0, SEEK_END);
+ if (data.loc_utmp != -1)
+ {
+#if _HAVE_UT_TYPE - 0
+ /* We have to fake the old entry because this `login'
+ function does not fit well into the UTMP file handling
+ scheme. */
+ data.ubuf.ut_type = ut->ut_type;
+#endif
+ pututline_r (ut, &data);
}
+
+ /* Close WTMP file. */
+ endutent_r (&data);
+ }
}
diff --git a/login/logout.c b/login/logout.c
index 40ae254..d47a392 100644
--- a/login/logout.c
+++ b/login/logout.c
@@ -1,72 +1,67 @@
-/*
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. 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.
- * 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.
- */
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)logout.c 8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
-#include <sys/types.h>
-#include <sys/time.h>
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
-#include <fcntl.h>
-#include <utmp.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
-typedef struct utmp UTMP;
+#include <errno.h>
+#include <string.h>
+#include <utmp.h>
+#include <sys/time.h>
int
-logout(line)
- register const char *line;
+logout (const char *line)
{
- register int fd;
- UTMP ut;
- int rval;
+ struct utmp_data data;
+ struct utmp tmp;
+ struct utmp *ut;
+ int result = 0;
+
+ /* Tell that we want to use the UTMP file. */
+ if (utmpname (_PATH_UTMP) == 0)
+ return 0;
+
+ /* Open UTMP file. */
+ setutent_r (&data);
+
+ /* Fill in search information. */
+#if _HAVE_UT_TYPE - 0
+ tmp.ut_type = USER_PROCESS;
+#endif
+ strncpy (tmp.ut_line, line, UT_LINESIZE);
+
+ /* Read the record. */
+ if (getutline_r (&tmp, &ut, &data) >= 0 || errno == ESRCH)
+ {
+ /* Clear information about who & from where. */
+ bzero (ut->ut_name, UT_NAMESIZE);
+ bzero (ut->ut_host, UT_HOSTSIZE);
+
+#if _HAVE_UT_TV - 0
+ gettimeofday (&ut->ut_tv, NULL);
+#else
+ time (&ut->ut_time);
+#endif
+
+ if (pututline_r (ut, &data) >= 0)
+ result = 1;
+ }
+
+ /* Close UTMP file. */
+ endutent_r (&data);
- if ((fd = open(_PATH_UTMP, O_RDWR, 0)) < 0)
- return(0);
- rval = 0;
- while (read(fd, &ut, sizeof(UTMP)) == sizeof(UTMP)) {
- if (!ut.ut_name[0] || strncmp(ut.ut_line, line, UT_LINESIZE))
- continue;
- bzero(ut.ut_name, UT_NAMESIZE);
- bzero(ut.ut_host, UT_HOSTSIZE);
- (void)time(&ut.ut_time);
- (void)lseek(fd, -(off_t)sizeof(UTMP), L_INCR);
- (void)write(fd, &ut, sizeof(UTMP));
- rval = 1;
- }
- (void)close(fd);
- return(rval);
+ return result;
}
diff --git a/login/logwtmp.c b/login/logwtmp.c
index 7734ca9..10f7384 100644
--- a/login/logwtmp.c
+++ b/login/logwtmp.c
@@ -1,67 +1,64 @@
-/*
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. 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.
- * 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.
- */
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
-#include <sys/types.h>
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <time.h>
-#include <string.h>
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+#include <string.h>
#include <unistd.h>
#include <utmp.h>
+
void
-logwtmp(line, name, host)
- const char *line, *name, *host;
+logwtmp (const char *line, const char *name, const char *host)
{
- struct utmp ut;
- struct stat buf;
- int fd;
+ struct utmp_data data;
+ struct utmp ut;
+
+ /* Tell that we want to use the UTMP file. */
+ if (utmpname (_PATH_WTMP) == 0)
+ return;
+
+ /* Open UTMP file. */
+ setutent_r (&data);
+
+ /* Position at end of file. */
+ data.loc_utmp = lseek (data.ut_fd, 0, SEEK_END);
+ if (data.loc_utmp == -1)
+ return;
+
+ /* Set information in new entry. */
+ bzero (&ut, sizeof (ut));
+#if _HAVE_UT_TYPE - 0
+ ut.ut_type = USER_PROCESS;
+#endif
+ strncpy (ut.ut_line, line, UT_LINESIZE);
+ strncpy (ut.ut_name, name, UT_NAMESIZE);
+ strncpy (ut.ut_host, host, UT_HOSTSIZE);
+
+#if _HAVE_UT_TV - 0
+ gettimeofday (&ut.ut_tv, NULL);
+#else
+ time (&ut.ut_time);
+#endif
+
+ /* Write the entry. */
+ pututline_r (&ut, &data);
+
+ /* Close UTMP file. */
+ endutent_r (&data);
- if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0)
- return;
- if (fstat(fd, &buf) == 0) {
- (void) strncpy(ut.ut_line, line, sizeof(ut.ut_line));
- (void) strncpy(ut.ut_name, name, sizeof(ut.ut_name));
- (void) strncpy(ut.ut_host, host, sizeof(ut.ut_host));
- (void) time(&ut.ut_time);
- if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
- sizeof(struct utmp))
- (void) ftruncate(fd, buf.st_size);
- }
- (void) close(fd);
}
diff --git a/login/pututline_r.c b/login/pututline_r.c
index 92ba8fb..07322e5 100644
--- a/login/pututline_r.c
+++ b/login/pututline_r.c
@@ -26,9 +26,29 @@ Boston, MA 02111-1307, USA. */
#include <sys/file.h>
+/* XXX An alternative solution would be to call a SUID root program
+ which write the new value. */
+
int
pututline_r (const struct utmp *utmp_ptr, struct utmp_data *utmp_data)
{
+ struct stat st;
+ int result = 0;
+
+#if _HAVE_UT_TYPE - 0
+ /* Test whether ID has any of the legal types because we have to
+ prevent illegal entries. */
+ if (id->ut_type != RUN_LVL && id->ut_type != BOOT_TIME
+ && id->ut_type != OLD_TIME && id->ut_type != NEW_TIME
+ && id->ut_type != INIT_PROCESS && id->ut_type != LOGIN_PROCESS
+ && id->ut_type != USER_PROCESS && id->ut_type != DEAD_PROCESS)
+ /* No, using '<' and '>' for the test is not possible. */
+ {
+ errno = EINVAL;
+ return -1;
+ }
+#endif
+
/* Open utmp file if not already done. */
if (utmp_data->ut_fd == -1)
{
@@ -37,12 +57,14 @@ pututline_r (const struct utmp *utmp_ptr, struct utmp_data *utmp_data)
return -1;
}
+#if _HAVE_UT_TYPE - 0
/* Seek position to write. */
if (utmp_data->ubuf.ut_type != utmp_ptr->ut_type)
{
/* We must not overwrite the data in UTMP_DATA. */
struct utmp_data *data_tmp = alloca (sizeof (utmp_data));
struct utmp *dummy;
+ off_t new_pos;
*data_tmp = *utmp_data;
utmp_data = data_tmp;
@@ -50,23 +72,25 @@ pututline_r (const struct utmp *utmp_ptr, struct utmp_data *utmp_data)
if (getutid_r (utmp_ptr, &dummy, utmp_data) < 0)
{
if (errno != ESRCH)
+ /* Some error occured. If no entry was found, the position
+ pointer now is at the end of the file. */
return -1;
- utmp_data->loc_utmp = lseek (utmp_data->ut_fd, 0, SEEK_END);
- if (utmp_data->loc_utmp == -1)
- return -1;
- }
+ /* Set position pointer to position after adding of the record. */
+ utmp_data->loc_utmp += sizeof (struct utmp);
}
+#endif
+
+ /* Find out how large the file is. */
+ if (fstat (utmp_data->ut_fd, &st) < 0)
+ return -1;
/* Position file correctly. */
- if (utmp_data->loc_utmp > 0
+ if (utmp_data->loc_utmp <= st.st_size
&& lseek (utmp_data->ut_fd, utmp_data->loc_utmp - sizeof (struct utmp),
SEEK_SET) < 0)
return -1;
- /* XXX An alternative solution would be to call an SUID root program
- which write the new value. */
-
/* Try to lock the file. */
if (flock (utmp_data->ut_fd, LOCK_EX | LOCK_NB) < 0 && errno != ENOSYS)
{
@@ -78,12 +102,22 @@ pututline_r (const struct utmp *utmp_ptr, struct utmp_data *utmp_data)
}
/* Write the new data. */
- if (write (utmp_data->ut_fd, &utmp_data->ubuf, sizeof (struct utmp))
+ if (write (utmp_data->ut_fd, utmp_ptr, sizeof (struct utmp))
!= sizeof (struct utmp))
- return -1;
+ {
+ /* If we appended a new record this is only partially written.
+ Remove it. */
+ if (utmp_data->loc_utmp > st.st_size)
+ {
+ (void) ftruncate (utmp_data->ut_fd, st.st_size);
+ utmp_data->loc_utmp = st.st_size;
+ }
+
+ result = -1;
+ }
/* And unlock the file. */
(void) flock (utmp_data->ut_fd, LOCK_UN);
- return 0;
+ return result;
}
diff --git a/login/setutent_r.c b/login/setutent_r.c
index 715101d..4b980cf 100644
--- a/login/setutent_r.c
+++ b/login/setutent_r.c
@@ -52,7 +52,9 @@ setutent_r (struct utmp_data *utmp_data)
/* Remember we are at beginning of file. */
utmp_data->loc_utmp = 0;
- utmp_data->ubuf.ut_type = -1;
+#if _HAVE_UT_TYPE - 0
+ utmp_data->ubuf.ut_type = UT_UNKNOWN;
+#endif
}