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authorMax Kellermann <max@duempel.org>2009-11-07 18:55:16 +0100
committerMax Kellermann <max@duempel.org>2009-11-07 18:55:16 +0100
commite3af0032b236dc52d4a74c4d740e57a1f6d520aa (patch)
tree3984233a9b639e71ad80b4f6598539de3a27a008 /configure.ac
parent9b21152600071ec46c021c8ba3b2ef69c90f039f (diff)
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set the close-on-exec flag on all file descriptors
Added the "fd_util" library, which attempts to use the new thread-safe Linux system calls pipe2(), accept4() and the options O_CLOEXEC, SOCK_CLOEXEC. Without these, it falls back to FD_CLOEXEC, which is not thread safe. This is particularly important for the "pipe" output plugin (and others, such as JACK/PulseAudio), because we were heavily leaking file descriptors to child processes.
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac4
1 files changed, 3 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 5f9b98111..fb2f6a916 100644
--- a/configure.ac
+++ b/configure.ac
@@ -115,12 +115,14 @@ fi
AC_CHECK_LIB(socket,socket,MPD_LIBS="$MPD_LIBS -lsocket",)
AC_CHECK_LIB(nsl,gethostbyname,MPD_LIBS="$MPD_LIBS -lnsl",)
+AC_CHECK_FUNCS(pipe2 accept4)
+
AC_CHECK_LIB(m,exp,MPD_LIBS="$MPD_LIBS -lm",)
AC_CHECK_HEADERS(locale.h)
AC_CHECK_HEADERS(valgrind/memcheck.h)
-AC_CHECK_FUNCS(inotify_init)
+AC_CHECK_FUNCS(inotify_init inotify_init1)
AC_ARG_ENABLE(inotify,
AS_HELP_STRING([--disable-inotify],
[disable support Inotify automatic database update (default: enabled) ]),,