libptytty/ptytty.m4

dnl this file is part of libptytty, do not make local modifications
dnl http://software.schmorp.de/pkg/libptytty

AC_DEFUN([PT_FIND_FILE],
[AC_CACHE_CHECK(for a fallback location of $1, pt_cv_path_$1, [
if test "$cross_compiling" != yes; then
  for file in $3; do
    if test -f "$file"; then
      pt_cv_path_$1=$file
      break
    fi
  done
fi])
if test x$pt_cv_path_$1 != x; then
  AC_DEFINE_UNQUOTED($2, "$pt_cv_path_$1", Define to a fallback location of $1)
elif test "$cross_compiling" = yes; then
  AC_MSG_WARN(Define $2 in config.h manually)
fi])

AC_DEFUN([PTY_CHECK],
[
AC_CHECK_HEADERS( \
  pty.h \
  util.h \
  libutil.h \
  sys/ioctl.h \
  sys/stropts.h \
  stropts.h \
)

AC_CHECK_FUNCS( \
  revoke \
  _getpty \
  getpt \
  posix_openpt \
  isastream \
  setuid \
  seteuid \
  setreuid \
  setresuid \
)

AC_MSG_CHECKING(for UNIX98 ptys)
AC_LINK_IFELSE(
  [AC_LANG_PROGRAM(
     [[#include <stdlib.h>]],
     [[grantpt(0);unlockpt(0);ptsname(0);]])],
  [unix98_pty=yes
   AC_DEFINE(UNIX98_PTY, 1, "")
   AC_MSG_RESULT(yes)],
  [AC_MSG_RESULT(no)])

if test -z "$unix98_pty"; then
  AC_SEARCH_LIBS(openpty, util, AC_DEFINE(HAVE_OPENPTY, 1, ""))
fi
])

AC_DEFUN([UTMP_CHECK],
[
support_utmp=yes
support_wtmp=yes
support_lastlog=yes

AC_ARG_ENABLE(utmp,
  [AS_HELP_STRING([--enable-utmp],[enable utmp (utmpx) support])],
  [if test x$enableval = xyes -o x$enableval = xno; then
    support_utmp=$enableval
  fi])

AC_ARG_ENABLE(wtmp,
  [AS_HELP_STRING([--enable-wtmp],[enable wtmp (wtmpx) support (requires --enable-utmp)])],
  [if test x$enableval = xyes -o x$enableval = xno; then
    support_wtmp=$enableval
  fi])

AC_ARG_ENABLE(lastlog,
  [AS_HELP_STRING([--enable-lastlog],[enable lastlog support (requires --enable-utmp)])],
  [if test x$enableval = xyes -o x$enableval = xno; then
    support_lastlog=$enableval
  fi])

if test x$support_utmp = xyes; then
  AC_DEFINE(UTMP_SUPPORT, 1, Define if you want to have utmp/utmpx support)
fi
if test x$support_wtmp = xyes; then
  AC_DEFINE(WTMP_SUPPORT, 1, Define if you want to have wtmp support when utmp/utmpx is enabled)
fi
if test x$support_lastlog = xyes; then
  AC_DEFINE(LASTLOG_SUPPORT, 1, Define if you want to have lastlog support when utmp/utmpx is enabled)
fi

AC_CHECK_FUNCS( \
        updwtmp \
        updwtmpx \
        updlastlogx \
)

AC_CHECK_HEADERS(lastlog.h)

dnl# --------------------------------------------------------------------------
dnl# DO ALL UTMP AND WTMP CHECKING
dnl# --------------------------------------------------------------------------
dnl# check for host field in utmp structure

dnl# --------------------------------------------
AC_CHECK_HEADERS(utmp.h,
AC_CHECK_TYPES([struct utmp], [], [], [
#include <sys/types.h>
#include <utmp.h>
])

AC_CHECK_MEMBER([struct utmp.ut_host],
[AC_DEFINE(HAVE_UTMP_HOST, 1, Define if struct utmp contains ut_host)], [], [
#include <sys/types.h>
#include <utmp.h>
])

AC_CHECK_MEMBER([struct utmp.ut_pid],
[AC_DEFINE(HAVE_UTMP_PID, 1, Define if struct utmp contains ut_pid)], [], [
#include <sys/types.h>
#include <utmp.h>
])
) dnl# AC_CHECK_HEADERS(utmp.h

dnl# --------------------------------------------

AC_CHECK_HEADERS(utmpx.h,
AC_CHECK_TYPES([struct utmpx], [], [], [
#include <sys/types.h>
#include <utmpx.h>
])

AC_CHECK_MEMBER([struct utmpx.ut_host],
[AC_DEFINE(HAVE_UTMPX_HOST, 1, Define if struct utmpx contains ut_host)], [], [
#include <sys/types.h>
#include <utmpx.h>
])

AC_CHECK_MEMBER([struct utmpx.ut_session],
[AC_DEFINE(HAVE_UTMPX_SESSION, 1, Define if struct utmpx contains ut_session)], [], [
#include <sys/types.h>
#include <utmpx.h>
])
) dnl# AC_CHECK_HEADERS(utmpx.h

dnl# --------------------------------------------------------------------------
dnl# check for struct lastlog
AC_CHECK_TYPES([struct lastlog], [], [], [
#include <sys/types.h>
#include <utmp.h>
#ifdef HAVE_LASTLOG_H
#include <lastlog.h>
#endif
])

dnl# check for struct lastlogx
AC_CHECK_TYPES([struct lastlogx], [], [], [
#include <sys/types.h>
#include <utmpx.h>
#ifdef HAVE_LASTLOG_H
#include <lastlog.h>
#endif
])

dnl# --------------------------------------------------------------------------
dnl# FIND FILES
dnl# --------------------------------------------------------------------------

dnl# find utmp
PT_FIND_FILE([utmp], [PT_UTMP_FILE],
["/var/run/utmp" "/var/adm/utmp" "/etc/utmp" "/usr/etc/utmp" "/usr/adm/utmp"])

dnl# --------------------------------------------------------------------------

dnl# find wtmp
PT_FIND_FILE([wtmp], [PT_WTMP_FILE],
["/var/log/wtmp" "/var/adm/wtmp" "/etc/wtmp" "/usr/etc/wtmp" "/usr/adm/wtmp"])
dnl# --------------------------------------------------------------------------

dnl# find wtmpx
PT_FIND_FILE([wtmpx], [PT_WTMPX_FILE],
["/var/log/wtmpx" "/var/adm/wtmpx"])
dnl# --------------------------------------------------------------------------

dnl# find lastlog
PT_FIND_FILE([lastlog], [PT_LASTLOG_FILE],
["/var/log/lastlog"])
dnl# --------------------------------------------------------------------------

dnl# find lastlogx
PT_FIND_FILE([lastlogx], [PT_LASTLOGX_FILE],
["/var/log/lastlogx" "/var/adm/lastlogx"])
])

AC_DEFUN([SCM_RIGHTS_CHECK],
[
AC_CACHE_CHECK(for unix-compliant filehandle passing ability, pt_cv_can_pass_fds,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <cstddef> // broken bsds (is that redundant?) need this
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
]], [[
{
  msghdr msg;
  iovec iov;
  char buf [100];
  char data = 0;

  iov.iov_base = &data;
  iov.iov_len  = 1;

  msg.msg_iov        = &iov;
  msg.msg_iovlen     = 1;
  msg.msg_control    = buf;
  msg.msg_controllen = sizeof buf;

  cmsghdr *cmsg = CMSG_FIRSTHDR (&msg);
  cmsg->cmsg_level = SOL_SOCKET;
  cmsg->cmsg_type  = SCM_RIGHTS;
  cmsg->cmsg_len   = 100;

  *(int *)CMSG_DATA (cmsg) = 5;

  return sendmsg (3, &msg, 0);
}
]])],[pt_cv_can_pass_fds=yes],[pt_cv_can_pass_fds=no])])
if test x$pt_cv_can_pass_fds = xyes; then
   AC_DEFINE(HAVE_UNIX_FDPASS, 1, Define if sys/socket.h defines the necessary macros/functions for file handle passing)
else
   AC_MSG_ERROR([libptytty requires unix-compliant filehandle passing ability])
fi
])

AC_DEFUN([TTY_GROUP_CHECK],
[
AC_CACHE_CHECK([for tty group], pt_cv_tty_group,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <grp.h>

int main()
{
  struct stat st;
  struct group *gr;
  char *tty;
  gr = getgrnam("tty");
  tty = ttyname(0);
  if (gr != 0
      && tty != 0
      && (stat(tty, &st)) == 0
      && st.st_gid == gr->gr_gid)
    return 0;
  else
    return 1;
}]])],[pt_cv_tty_group=yes],[pt_cv_tty_group=no],[pt_cv_tty_group=no])])
if test x$pt_cv_tty_group = xyes; then
  AC_DEFINE(TTY_GID_SUPPORT, 1, "")
fi])

Revision:	1.31
Committed:	Sat Nov 26 13:39:03 2011 UTC (12 years, 6 months ago) by sf-exg
Branch:	MAIN
CVS Tags:	rel-9_14
Changes since 1.30:	+21 -45 lines
Log Message:	Change PT_FIND_FILE to search only for fallback locations of utmp/wtmp/lastlog files and define the *_FILE macros at compile time.
#	User	Rev	Content
1	root	1.2	dnl this file is part of libptytty, do not make local modifications
2			dnl http://software.schmorp.de/pkg/libptytty
3
4	sf-exg	1.24	AC_DEFUN([PT_FIND_FILE],
5	sf-exg	1.31	[AC_CACHE_CHECK(for a fallback location of $1, pt_cv_path_$1, [
6			if test "$cross_compiling" != yes; then
7			for file in $3; do
8			if test -f "$file"; then
9			pt_cv_path_$1=$file
10			break
11			fi
12			done
13			fi])
14	sf-exg	1.24	if test x$pt_cv_path_$1 != x; then
15	sf-exg	1.31	AC_DEFINE_UNQUOTED($2, "$pt_cv_path_$1", Define to a fallback location of $1)
16			elif test "$cross_compiling" = yes; then
17			AC_MSG_WARN(Define $2 in config.h manually)
18	sf-exg	1.24	fi])
19
20	ayin	1.1	AC_DEFUN([PTY_CHECK],
21			[
22			AC_CHECK_HEADERS( \
23			pty.h \
24			util.h \
25			libutil.h \
26			sys/ioctl.h \
27			sys/stropts.h \
28	root	1.17	stropts.h \
29	ayin	1.1	)
30
31			AC_CHECK_FUNCS( \
32			revoke \
33			_getpty \
34			getpt \
35			posix_openpt \
36			isastream \
37	root	1.7	setuid \
38			seteuid \
39			setreuid \
40			setresuid \
41	ayin	1.1	)
42
43	sf-exg	1.29	AC_MSG_CHECKING(for UNIX98 ptys)
44			AC_LINK_IFELSE(
45			[AC_LANG_PROGRAM(
46			[[#include <stdlib.h>]],
47			[[grantpt(0);unlockpt(0);ptsname(0);]])],
48			[unix98_pty=yes
49			AC_DEFINE(UNIX98_PTY, 1, "")
50			AC_MSG_RESULT(yes)],
51			[AC_MSG_RESULT(no)])
52	ayin	1.1
53			if test -z "$unix98_pty"; then
54	sf-exg	1.21	AC_SEARCH_LIBS(openpty, util, AC_DEFINE(HAVE_OPENPTY, 1, ""))
55	ayin	1.1	fi
56			])
57
58			AC_DEFUN([UTMP_CHECK],
59			[
60	ayin	1.5	support_utmp=yes
61			support_wtmp=yes
62			support_lastlog=yes
63
64	ayin	1.4	AC_ARG_ENABLE(utmp,
65	ayin	1.11	[AS_HELP_STRING([--enable-utmp],[enable utmp (utmpx) support])],
66	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
67			support_utmp=$enableval
68			fi])
69
70			AC_ARG_ENABLE(wtmp,
71	ayin	1.11	[AS_HELP_STRING([--enable-wtmp],[enable wtmp (wtmpx) support (requires --enable-utmp)])],
72	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
73			support_wtmp=$enableval
74			fi])
75
76			AC_ARG_ENABLE(lastlog,
77	ayin	1.11	[AS_HELP_STRING([--enable-lastlog],[enable lastlog support (requires --enable-utmp)])],
78	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
79			support_lastlog=$enableval
80			fi])
81
82			if test x$support_utmp = xyes; then
83			AC_DEFINE(UTMP_SUPPORT, 1, Define if you want to have utmp/utmpx support)
84			fi
85			if test x$support_wtmp = xyes; then
86			AC_DEFINE(WTMP_SUPPORT, 1, Define if you want to have wtmp support when utmp/utmpx is enabled)
87			fi
88			if test x$support_lastlog = xyes; then
89			AC_DEFINE(LASTLOG_SUPPORT, 1, Define if you want to have lastlog support when utmp/utmpx is enabled)
90			fi
91
92	ayin	1.1	AC_CHECK_FUNCS( \
93			updwtmp \
94			updwtmpx \
95	ayin	1.12	updlastlogx \
96	ayin	1.1	)
97
98	ayin	1.15	AC_CHECK_HEADERS(lastlog.h)
99	ayin	1.1
100			dnl# --------------------------------------------------------------------------
101			dnl# DO ALL UTMP AND WTMP CHECKING
102			dnl# --------------------------------------------------------------------------
103			dnl# check for host field in utmp structure
104
105			dnl# --------------------------------------------
106	ayin	1.15	AC_CHECK_HEADERS(utmp.h,
107	sf-exg	1.26	AC_CHECK_TYPES([struct utmp], [], [], [
108			#include <sys/types.h>
109			#include <utmp.h>
110			])
111	ayin	1.1
112	sf-exg	1.26	AC_CHECK_MEMBER([struct utmp.ut_host],
113			[AC_DEFINE(HAVE_UTMP_HOST, 1, Define if struct utmp contains ut_host)], [], [
114			#include <sys/types.h>
115			#include <utmp.h>
116			])
117	ayin	1.1
118	sf-exg	1.26	AC_CHECK_MEMBER([struct utmp.ut_pid],
119			[AC_DEFINE(HAVE_UTMP_PID, 1, Define if struct utmp contains ut_pid)], [], [
120			#include <sys/types.h>
121			#include <utmp.h>
122			])
123	ayin	1.15	) dnl# AC_CHECK_HEADERS(utmp.h
124	ayin	1.1
125			dnl# --------------------------------------------
126
127	ayin	1.15	AC_CHECK_HEADERS(utmpx.h,
128	sf-exg	1.26	AC_CHECK_TYPES([struct utmpx], [], [], [
129			#include <sys/types.h>
130			#include <utmpx.h>
131			])
132	ayin	1.1
133	sf-exg	1.26	AC_CHECK_MEMBER([struct utmpx.ut_host],
134			[AC_DEFINE(HAVE_UTMPX_HOST, 1, Define if struct utmpx contains ut_host)], [], [
135			#include <sys/types.h>
136			#include <utmpx.h>
137			])
138	ayin	1.1
139	sf-exg	1.26	AC_CHECK_MEMBER([struct utmpx.ut_session],
140			[AC_DEFINE(HAVE_UTMPX_SESSION, 1, Define if struct utmpx contains ut_session)], [], [
141			#include <sys/types.h>
142			#include <utmpx.h>
143			])
144	ayin	1.15	) dnl# AC_CHECK_HEADERS(utmpx.h
145	ayin	1.1
146			dnl# --------------------------------------------------------------------------
147			dnl# check for struct lastlog
148	sf-exg	1.26	AC_CHECK_TYPES([struct lastlog], [], [], [
149			#include <sys/types.h>
150	ayin	1.1	#include <utmp.h>
151			#ifdef HAVE_LASTLOG_H
152			#include <lastlog.h>
153			#endif
154	sf-exg	1.26	])
155	ayin	1.1
156			dnl# check for struct lastlogx
157	sf-exg	1.26	AC_CHECK_TYPES([struct lastlogx], [], [], [
158			#include <sys/types.h>
159	ayin	1.1	#include <utmpx.h>
160			#ifdef HAVE_LASTLOG_H
161			#include <lastlog.h>
162			#endif
163	sf-exg	1.26	])
164	ayin	1.1
165			dnl# --------------------------------------------------------------------------
166			dnl# FIND FILES
167			dnl# --------------------------------------------------------------------------
168
169			dnl# find utmp
170	sf-exg	1.31	PT_FIND_FILE([utmp], [PT_UTMP_FILE],
171			["/var/run/utmp" "/var/adm/utmp" "/etc/utmp" "/usr/etc/utmp" "/usr/adm/utmp"])
172	ayin	1.1
173			dnl# --------------------------------------------------------------------------
174
175			dnl# find wtmp
176	sf-exg	1.31	PT_FIND_FILE([wtmp], [PT_WTMP_FILE],
177			["/var/log/wtmp" "/var/adm/wtmp" "/etc/wtmp" "/usr/etc/wtmp" "/usr/adm/wtmp"])
178	ayin	1.1	dnl# --------------------------------------------------------------------------
179
180			dnl# find wtmpx
181	sf-exg	1.31	PT_FIND_FILE([wtmpx], [PT_WTMPX_FILE],
182			["/var/log/wtmpx" "/var/adm/wtmpx"])
183	ayin	1.1	dnl# --------------------------------------------------------------------------
184
185			dnl# find lastlog
186	sf-exg	1.31	PT_FIND_FILE([lastlog], [PT_LASTLOG_FILE],
187	sf-exg	1.30	["/var/log/lastlog"])
188	ayin	1.1	dnl# --------------------------------------------------------------------------
189
190			dnl# find lastlogx
191	sf-exg	1.31	PT_FIND_FILE([lastlogx], [PT_LASTLOGX_FILE],
192			["/var/log/lastlogx" "/var/adm/lastlogx"])
193	ayin	1.1	])
194
195			AC_DEFUN([SCM_RIGHTS_CHECK],
196			[
197	sf-exg	1.18	AC_CACHE_CHECK(for unix-compliant filehandle passing ability, pt_cv_can_pass_fds,
198	ayin	1.16	[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
199	root	1.6	#include <cstddef> // broken bsds (is that redundant?) need this
200	ayin	1.1	#include <sys/types.h>
201			#include <sys/socket.h>
202			#include <sys/uio.h>
203	ayin	1.16	]], [[
204	ayin	1.1	{
205			msghdr msg;
206			iovec iov;
207			char buf [100];
208			char data = 0;
209
210			iov.iov_base = &data;
211			iov.iov_len = 1;
212
213			msg.msg_iov = &iov;
214			msg.msg_iovlen = 1;
215			msg.msg_control = buf;
216			msg.msg_controllen = sizeof buf;
217
218			cmsghdr *cmsg = CMSG_FIRSTHDR (&msg);
219			cmsg->cmsg_level = SOL_SOCKET;
220			cmsg->cmsg_type = SCM_RIGHTS;
221			cmsg->cmsg_len = 100;
222
223			(int )CMSG_DATA (cmsg) = 5;
224
225			return sendmsg (3, &msg, 0);
226			}
227	sf-exg	1.18	]])],[pt_cv_can_pass_fds=yes],[pt_cv_can_pass_fds=no])])
228			if test x$pt_cv_can_pass_fds = xyes; then
229	ayin	1.1	AC_DEFINE(HAVE_UNIX_FDPASS, 1, Define if sys/socket.h defines the necessary macros/functions for file handle passing)
230			else
231			AC_MSG_ERROR([libptytty requires unix-compliant filehandle passing ability])
232			fi
233			])
234	ayin	1.3
235			AC_DEFUN([TTY_GROUP_CHECK],
236			[
237	sf-exg	1.18	AC_CACHE_CHECK([for tty group], pt_cv_tty_group,
238	ayin	1.16	[AC_RUN_IFELSE([AC_LANG_SOURCE([[
239	ayin	1.3	#include <sys/types.h>
240			#include <sys/stat.h>
241			#include <unistd.h>
242			#include <grp.h>
243
244	sf-exg	1.22	int main()
245	ayin	1.3	{
246			struct stat st;
247			struct group *gr;
248			char *tty;
249			gr = getgrnam("tty");
250			tty = ttyname(0);
251			if (gr != 0
252			&& tty != 0
253			&& (stat(tty, &st)) == 0
254			&& st.st_gid == gr->gr_gid)
255			return 0;
256			else
257			return 1;
258	sf-exg	1.18	}]])],[pt_cv_tty_group=yes],[pt_cv_tty_group=no],[pt_cv_tty_group=no])])
259			if test x$pt_cv_tty_group = xyes; then
260	ayin	1.3	AC_DEFINE(TTY_GID_SUPPORT, 1, "")
261			fi])
262