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(where $1 is located, pt_cv_path_$1,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
$5
int main()
{
    const char **path, *list[] = { $4, NULL };
    FILE *f = fopen("conftestval", "w");
    if (!f) return 1;
#ifdef $2
    fprintf(f, "%s\n", $2);
#elif defined($3)
    fprintf(f, "%s\n", $3);
#else
    for (path = list; *path; path++) {
        struct stat st;
        if (stat(*path, &st) == 0) {
            fprintf(f, "%s\n", *path);
            break;
        }
    }
#endif
    return fclose(f) != 0;
}]])],[pt_cv_path_$1=`cat conftestval`],[pt_cv_path_$1=],
[AC_MSG_WARN(Define $2 in config.h manually)])])
if test x$pt_cv_path_$1 != x; then
  AC_DEFINE_UNQUOTED($2, "$pt_cv_path_$1", Define location of $1)
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], [UTMP_FILE], [_PATH_UTMP],
["/var/run/utmp", "/var/adm/utmp", "/etc/utmp", "/usr/etc/utmp", "/usr/adm/utmp"],[
#include <sys/types.h>
#include <utmp.h>
])

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

dnl# find wtmp
PT_FIND_FILE([wtmp], [WTMP_FILE], [_PATH_WTMP],
["/var/log/wtmp", "/var/adm/wtmp", "/etc/wtmp", "/usr/etc/wtmp", "/usr/adm/wtmp"],[
#include <sys/types.h>
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
])
dnl# --------------------------------------------------------------------------

dnl# find wtmpx
PT_FIND_FILE([wtmpx], [WTMPX_FILE], [_PATH_WTMPX],
["/var/log/wtmpx", "/var/adm/wtmpx"],[
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif
])
dnl# --------------------------------------------------------------------------

dnl# find lastlog
PT_FIND_FILE([lastlog], [LASTLOG_FILE], [_PATH_LASTLOG],
["/var/log/lastlog"],[
#include <sys/types.h>
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_LASTLOG_H
#include <lastlog.h>
#endif
])
dnl# --------------------------------------------------------------------------

dnl# find lastlogx
PT_FIND_FILE([lastlogx], [LASTLOGX_FILE], [_PATH_LASTLOGX],
["/var/log/lastlogx", "/var/adm/lastlogx"],[
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif
])
])

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:	1.28
Committed:	Thu Nov 10 16:30:16 2011 UTC (12 years, 6 months ago) by sf-exg
Branch:	MAIN
Changes since 1.27:	+0 -31 lines
Log Message:	Get rid of runtime configure tests to find the multiplexer device. We now assume that if the system provides the unix98 pty api but not posix_openpt then it provides either the ptmx or ptc (aix) device.
#	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			[AC_CACHE_CHECK(where $1 is located, pt_cv_path_$1,
6			[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdio.h>
7			#include <stdlib.h>
8	sf-exg	1.25	#include <sys/stat.h>
9	sf-exg	1.24	$5
10			int main()
11			{
12	sf-exg	1.27	const char *path, list[] = { $4, NULL };
13	sf-exg	1.25	FILE *f = fopen("conftestval", "w");
14			if (!f) return 1;
15	sf-exg	1.24	#ifdef $2
16			fprintf(f, "%s\n", $2);
17	sf-exg	1.25	#elif defined($3)
18	sf-exg	1.24	fprintf(f, "%s\n", $3);
19	sf-exg	1.25	#else
20	sf-exg	1.24	for (path = list; *path; path++) {
21	sf-exg	1.25	struct stat st;
22			if (stat(*path, &st) == 0) {
23	sf-exg	1.24	fprintf(f, "%s\n", *path);
24	sf-exg	1.25	break;
25	sf-exg	1.24	}
26			}
27	sf-exg	1.25	#endif
28			return fclose(f) != 0;
29	sf-exg	1.24	}]])],[pt_cv_path_$1=`cat conftestval`],[pt_cv_path_$1=],
30			[AC_MSG_WARN(Define $2 in config.h manually)])])
31			if test x$pt_cv_path_$1 != x; then
32			AC_DEFINE_UNQUOTED($2, "$pt_cv_path_$1", Define location of $1)
33			fi])
34
35	ayin	1.1	AC_DEFUN([PTY_CHECK],
36			[
37			AC_CHECK_HEADERS( \
38			pty.h \
39			util.h \
40			libutil.h \
41			sys/ioctl.h \
42			sys/stropts.h \
43	root	1.17	stropts.h \
44	ayin	1.1	)
45
46			AC_CHECK_FUNCS( \
47			revoke \
48			_getpty \
49			getpt \
50			posix_openpt \
51			isastream \
52	root	1.7	setuid \
53			seteuid \
54			setreuid \
55			setresuid \
56	ayin	1.1	)
57
58			AC_MSG_CHECKING(for UNIX98 ptys)
59	ayin	1.16	AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>]],
60			[[grantpt(0);unlockpt(0);ptsname(0);]])],
61	ayin	1.1	[unix98_pty=yes
62			AC_DEFINE(UNIX98_PTY, 1, "")
63			AC_MSG_RESULT(yes)],
64			[AC_MSG_RESULT(no)])
65
66			if test -z "$unix98_pty"; then
67	sf-exg	1.21	AC_SEARCH_LIBS(openpty, util, AC_DEFINE(HAVE_OPENPTY, 1, ""))
68	ayin	1.1	fi
69			])
70
71			AC_DEFUN([UTMP_CHECK],
72			[
73	ayin	1.5	support_utmp=yes
74			support_wtmp=yes
75			support_lastlog=yes
76
77	ayin	1.4	AC_ARG_ENABLE(utmp,
78	ayin	1.11	[AS_HELP_STRING([--enable-utmp],[enable utmp (utmpx) support])],
79	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
80			support_utmp=$enableval
81			fi])
82
83			AC_ARG_ENABLE(wtmp,
84	ayin	1.11	[AS_HELP_STRING([--enable-wtmp],[enable wtmp (wtmpx) support (requires --enable-utmp)])],
85	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
86			support_wtmp=$enableval
87			fi])
88
89			AC_ARG_ENABLE(lastlog,
90	ayin	1.11	[AS_HELP_STRING([--enable-lastlog],[enable lastlog support (requires --enable-utmp)])],
91	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
92			support_lastlog=$enableval
93			fi])
94
95			if test x$support_utmp = xyes; then
96			AC_DEFINE(UTMP_SUPPORT, 1, Define if you want to have utmp/utmpx support)
97			fi
98			if test x$support_wtmp = xyes; then
99			AC_DEFINE(WTMP_SUPPORT, 1, Define if you want to have wtmp support when utmp/utmpx is enabled)
100			fi
101			if test x$support_lastlog = xyes; then
102			AC_DEFINE(LASTLOG_SUPPORT, 1, Define if you want to have lastlog support when utmp/utmpx is enabled)
103			fi
104
105	ayin	1.1	AC_CHECK_FUNCS( \
106			updwtmp \
107			updwtmpx \
108	ayin	1.12	updlastlogx \
109	ayin	1.1	)
110
111	ayin	1.15	AC_CHECK_HEADERS(lastlog.h)
112	ayin	1.1
113			dnl# --------------------------------------------------------------------------
114			dnl# DO ALL UTMP AND WTMP CHECKING
115			dnl# --------------------------------------------------------------------------
116			dnl# check for host field in utmp structure
117
118			dnl# --------------------------------------------
119	ayin	1.15	AC_CHECK_HEADERS(utmp.h,
120	sf-exg	1.26	AC_CHECK_TYPES([struct utmp], [], [], [
121			#include <sys/types.h>
122			#include <utmp.h>
123			])
124	ayin	1.1
125	sf-exg	1.26	AC_CHECK_MEMBER([struct utmp.ut_host],
126			[AC_DEFINE(HAVE_UTMP_HOST, 1, Define if struct utmp contains ut_host)], [], [
127			#include <sys/types.h>
128			#include <utmp.h>
129			])
130	ayin	1.1
131	sf-exg	1.26	AC_CHECK_MEMBER([struct utmp.ut_pid],
132			[AC_DEFINE(HAVE_UTMP_PID, 1, Define if struct utmp contains ut_pid)], [], [
133			#include <sys/types.h>
134			#include <utmp.h>
135			])
136	ayin	1.15	) dnl# AC_CHECK_HEADERS(utmp.h
137	ayin	1.1
138			dnl# --------------------------------------------
139
140	ayin	1.15	AC_CHECK_HEADERS(utmpx.h,
141	sf-exg	1.26	AC_CHECK_TYPES([struct utmpx], [], [], [
142			#include <sys/types.h>
143			#include <utmpx.h>
144			])
145	ayin	1.1
146	sf-exg	1.26	AC_CHECK_MEMBER([struct utmpx.ut_host],
147			[AC_DEFINE(HAVE_UTMPX_HOST, 1, Define if struct utmpx contains ut_host)], [], [
148			#include <sys/types.h>
149			#include <utmpx.h>
150			])
151	ayin	1.1
152	sf-exg	1.26	AC_CHECK_MEMBER([struct utmpx.ut_session],
153			[AC_DEFINE(HAVE_UTMPX_SESSION, 1, Define if struct utmpx contains ut_session)], [], [
154			#include <sys/types.h>
155			#include <utmpx.h>
156			])
157	ayin	1.15	) dnl# AC_CHECK_HEADERS(utmpx.h
158	ayin	1.1
159			dnl# --------------------------------------------------------------------------
160			dnl# check for struct lastlog
161	sf-exg	1.26	AC_CHECK_TYPES([struct lastlog], [], [], [
162			#include <sys/types.h>
163	ayin	1.1	#include <utmp.h>
164			#ifdef HAVE_LASTLOG_H
165			#include <lastlog.h>
166			#endif
167	sf-exg	1.26	])
168	ayin	1.1
169			dnl# check for struct lastlogx
170	sf-exg	1.26	AC_CHECK_TYPES([struct lastlogx], [], [], [
171			#include <sys/types.h>
172	ayin	1.1	#include <utmpx.h>
173			#ifdef HAVE_LASTLOG_H
174			#include <lastlog.h>
175			#endif
176	sf-exg	1.26	])
177	ayin	1.1
178			dnl# --------------------------------------------------------------------------
179			dnl# FIND FILES
180			dnl# --------------------------------------------------------------------------
181
182			dnl# find utmp
183	sf-exg	1.24	PT_FIND_FILE([utmp], [UTMP_FILE], [_PATH_UTMP],
184			["/var/run/utmp", "/var/adm/utmp", "/etc/utmp", "/usr/etc/utmp", "/usr/adm/utmp"],[
185	ayin	1.1	#include <sys/types.h>
186			#include <utmp.h>
187	sf-exg	1.24	])
188	ayin	1.1
189			dnl# --------------------------------------------------------------------------
190
191			dnl# find wtmp
192	sf-exg	1.24	PT_FIND_FILE([wtmp], [WTMP_FILE], [_PATH_WTMP],
193			["/var/log/wtmp", "/var/adm/wtmp", "/etc/wtmp", "/usr/etc/wtmp", "/usr/adm/wtmp"],[
194	ayin	1.1	#include <sys/types.h>
195			#ifdef HAVE_UTMP_H
196			#include <utmp.h>
197			#endif
198	sf-exg	1.24	])
199	ayin	1.1	dnl# --------------------------------------------------------------------------
200
201			dnl# find wtmpx
202	sf-exg	1.24	PT_FIND_FILE([wtmpx], [WTMPX_FILE], [_PATH_WTMPX],
203			["/var/log/wtmpx", "/var/adm/wtmpx"],[
204	ayin	1.1	#ifdef HAVE_UTMPX_H
205			#include <utmpx.h>
206			#endif
207	sf-exg	1.24	])
208	ayin	1.1	dnl# --------------------------------------------------------------------------
209
210			dnl# find lastlog
211	sf-exg	1.24	PT_FIND_FILE([lastlog], [LASTLOG_FILE], [_PATH_LASTLOG],
212			["/var/log/lastlog"],[
213	ayin	1.1	#include <sys/types.h>
214	sf-exg	1.23	#ifdef HAVE_UTMP_H
215	ayin	1.1	#include <utmp.h>
216			#endif
217			#ifdef HAVE_LASTLOG_H
218			#include <lastlog.h>
219			#endif
220	sf-exg	1.24	])
221	ayin	1.1	dnl# --------------------------------------------------------------------------
222
223			dnl# find lastlogx
224	sf-exg	1.24	PT_FIND_FILE([lastlogx], [LASTLOGX_FILE], [_PATH_LASTLOGX],
225			["/var/log/lastlogx", "/var/adm/lastlogx"],[
226	ayin	1.1	#ifdef HAVE_UTMPX_H
227			#include <utmpx.h>
228			#endif
229	sf-exg	1.24	])
230	ayin	1.1	])
231
232			AC_DEFUN([SCM_RIGHTS_CHECK],
233			[
234	sf-exg	1.18	AC_CACHE_CHECK(for unix-compliant filehandle passing ability, pt_cv_can_pass_fds,
235	ayin	1.16	[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
236	root	1.6	#include <cstddef> // broken bsds (is that redundant?) need this
237	ayin	1.1	#include <sys/types.h>
238			#include <sys/socket.h>
239			#include <sys/uio.h>
240	ayin	1.16	]], [[
241	ayin	1.1	{
242			msghdr msg;
243			iovec iov;
244			char buf [100];
245			char data = 0;
246
247			iov.iov_base = &data;
248			iov.iov_len = 1;
249
250			msg.msg_iov = &iov;
251			msg.msg_iovlen = 1;
252			msg.msg_control = buf;
253			msg.msg_controllen = sizeof buf;
254
255			cmsghdr *cmsg = CMSG_FIRSTHDR (&msg);
256			cmsg->cmsg_level = SOL_SOCKET;
257			cmsg->cmsg_type = SCM_RIGHTS;
258			cmsg->cmsg_len = 100;
259
260			(int )CMSG_DATA (cmsg) = 5;
261
262			return sendmsg (3, &msg, 0);
263			}
264	sf-exg	1.18	]])],[pt_cv_can_pass_fds=yes],[pt_cv_can_pass_fds=no])])
265			if test x$pt_cv_can_pass_fds = xyes; then
266	ayin	1.1	AC_DEFINE(HAVE_UNIX_FDPASS, 1, Define if sys/socket.h defines the necessary macros/functions for file handle passing)
267			else
268			AC_MSG_ERROR([libptytty requires unix-compliant filehandle passing ability])
269			fi
270			])
271	ayin	1.3
272			AC_DEFUN([TTY_GROUP_CHECK],
273			[
274	sf-exg	1.18	AC_CACHE_CHECK([for tty group], pt_cv_tty_group,
275	ayin	1.16	[AC_RUN_IFELSE([AC_LANG_SOURCE([[
276	ayin	1.3	#include <sys/types.h>
277			#include <sys/stat.h>
278			#include <unistd.h>
279			#include <grp.h>
280
281	sf-exg	1.22	int main()
282	ayin	1.3	{
283			struct stat st;
284			struct group *gr;
285			char *tty;
286			gr = getgrnam("tty");
287			tty = ttyname(0);
288			if (gr != 0
289			&& tty != 0
290			&& (stat(tty, &st)) == 0
291			&& st.st_gid == gr->gr_gid)
292			return 0;
293			else
294			return 1;
295	sf-exg	1.18	}]])],[pt_cv_tty_group=yes],[pt_cv_tty_group=no],[pt_cv_tty_group=no])])
296			if test x$pt_cv_tty_group = xyes; then
297	ayin	1.3	AC_DEFINE(TTY_GID_SUPPORT, 1, "")
298			fi])
299