diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/configure.ac b/configure.ac index 16e579c862a..dd5e322194a 100644 --- a/configure.ac +++ b/configure.ac @@ -3445,7 +3445,7 @@ case $opsys in cygwin ) AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)]) dnl multi-line AC_DEFINEs are hard. :( - AC_DEFINE(PTY_OPEN, [ do { int dummy; SIGMASKTYPE mask; mask = sigblock (sigmask (SIGCHLD)); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; sigsetmask (mask); if (fd >= 0) emacs_close (dummy); } while (0)]) + AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (0)]) AC_DEFINE(PTY_NAME_SPRINTF, []) AC_DEFINE(PTY_TTY_NAME_SPRINTF, []) ;; @@ -3474,7 +3474,7 @@ case $opsys in AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)]) dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD dnl to prevent sigchld_handler from intercepting the child's death. - AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname; sigblock (sigmask (SIGCHLD)); if (grantpt (fd) == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname(fd))) { sigunblock (sigmask (SIGCHLD)); close (fd); return -1; } snprintf (pty_name, sizeof pty_name, "%s", ptyname); sigunblock (sigmask (SIGCHLD)); }]) + AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname = 0; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); if (grantpt (fd) != -1 && unlockpt (fd) != -1) ptyname = ptsname(fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (!ptyname) { close (fd); return -1; } snprintf (pty_name, sizeof pty_name, "%s", ptyname); }]) dnl if HAVE_POSIX_OPENPT if test "x$ac_cv_func_posix_openpt" = xyes; then AC_DEFINE(PTY_OPEN, [fd = posix_openpt (O_RDWR | O_NOCTTY)]) @@ -3519,18 +3519,15 @@ case $opsys in ;; sol2* ) - dnl Uses sigblock/sigunblock rather than sighold/sigrelse, - dnl which appear to be BSD4.1 specific. It may also be appropriate - dnl for SVR4.x (x<2) but I'm not sure. fnf@cygnus.com dnl On SysVr4, grantpt(3) forks a subprocess, so keep sigchld_handler() dnl from intercepting that death. If any child but grantpt's should die dnl within, it should be caught after sigrelse(2). - AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; sigblock (sigmask (SIGCLD)); if (grantpt (fd) == -1) { emacs_close (fd); return -1; } sigunblock (sigmask (SIGCLD)); if (unlockpt (fd) == -1) { emacs_close (fd); return -1; } if (!(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, sizeof pty_name, "%s", ptyname); }]) + AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, sizeof pty_name, "%s", ptyname); }]) ;; unixware ) dnl Comments are as per sol2*. - AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; sigblock(sigmask(SIGCLD)); if (grantpt(fd) == -1) fatal("could not grant slave pty"); sigunblock(sigmask(SIGCLD)); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, sizeof pty_name, "%s", ptyname); }]) + AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1) fatal("could not grant slave pty"); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, sizeof pty_name, "%s", ptyname); }]) ;; esac @@ -3820,13 +3817,6 @@ case $opsys in AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on some systems, where it requires time.h.]) ;; - - netbsd | openbsd ) - dnl Greg A. Woods <woods@weird.com> says we must include signal.h - dnl before syssignal.h is included, to work around interface conflicts - dnl that are handled with CPP __RENAME() macro in signal.h. - AC_DEFINE(SIGNAL_H_AHB, 1, [Define if AH_BOTTOM should include signal.h.]) - ;; esac |