diff --git a/configure.ac b/configure.ac
index 879ad15..ec9b35b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,890 +1,895 @@
# Process this file with autoconf to produce a configure script.
AC_PREREQ([2.69])
dnl inject zero as a "patch" component of the version if missing in tag;
dnl care to bump "X.Y.Z-yank" template below upon each release very desirable
AC_INIT([libqb],
m4_esyscmd([build-aux/git-version-gen $(echo '$Format:%h??%D$'\
| sed -ne 's/^[$]Format:[^$]*[$]$/.tarball-version/p;tend'\
-e 's/.*tag: v\([^, ][^, ]*\).*/\1-yank/;tv'\
-e 's/^\([[:xdigit:]][[:xdigit:]]*\).*/1.9.0-yank\1/'\
-e ':v' -e 'w .snapshot-version' -e 'i\
.snapshot-version' -e ':end' -e 'q')\
's/^\(v[0-9][0-9]*\.[0-9][0-9]*\)\([^.].*\)\?$/\1.0\2/']),
[developers@clusterlabs.org])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_SRCDIR([lib/ringbuffer.c])
AC_CONFIG_HEADERS([include/config.h include/qb/qbconfig.h])
AC_USE_SYSTEM_EXTENSIONS
AM_INIT_AUTOMAKE([-Wno-portability dist-xz subdir-objects])
dnl automake >= 1.11 offers --enable-silent-rules for suppressing the output from
dnl normal compilation. When a failure occurs, it will then display the full
dnl command line
dnl Wrap in m4_ifdef to avoid breaking on older platforms
m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
LT_PREREQ([2.2.6])
# --enable-new-dtags: Use RUNPATH instead of RPATH.
# It is necessary to have this done before libtool does linker detection.
# See also: https://github.com/kronosnet/kronosnet/issues/107
AX_CHECK_LINK_FLAG([-Wl,--enable-new-dtags],
[AM_LDFLAGS=-Wl,--enable-new-dtags],
[AC_MSG_ERROR(["Linker support for --enable-new-dtags is required"])])
AC_SUBST([AM_LDFLAGS])
saved_LDFLAGS="$LDFLAGS"
LDFLAGS="$AM_LDFLAGS $LDFLAGS"
LT_INIT
LDFLAGS="$saved_LDFLAGS"
AC_CONFIG_MACRO_DIR([m4])
AC_CANONICAL_HOST
LT_INIT
AC_LANG([C])
dnl Fix default variables - "prefix" variable if not specified
if test "$prefix" = "NONE"; then
prefix="/usr"
if test "$localstatedir" = "\${prefix}/var"; then
localstatedir="/var"
fi
if test "$sysconfdir" = "\${prefix}/etc"; then
sysconfdir="/etc"
fi
if test "$libdir" = "\${exec_prefix}/lib"; then
if test -e /usr/lib64; then
libdir="/usr/lib64"
else
libdir="/usr/lib"
fi
fi
fi
if test "$srcdir" = "."; then
AC_MSG_NOTICE([building in place srcdir:$srcdir])
AC_DEFINE([BUILDING_IN_PLACE], 1, [building in place])
else
AC_MSG_NOTICE([building out of tree srcdir:$srcdir])
fi
# Checks for programs.
# check stolen from gnulib/m4/gnu-make.m4
if ! ${MAKE-make} --version /cannot/make/this >/dev/null 2>&1; then
AC_MSG_ERROR([you don't seem to have GNU make; it is required])
fi
AC_PROG_CXX
AM_CONDITIONAL(HAVE_GXX, [test "x$GXX" = xyes])
AC_PROG_AWK
AC_PROG_CC
AC_PROG_CPP
AM_PROG_CC_C_O
m4_version_prereq([2.70], [:], [AC_PROG_CC_C99])
if test "x$ac_cv_prog_cc_c99" = "xno"; then
AC_MSG_ERROR(["C99 support is required"])
fi
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_CHECK_PROGS([PKGCONFIG], [pkg-config])
AC_CHECK_PROGS([DOXYGEN], [doxygen])
AM_CONDITIONAL(HAVE_DOXYGEN, test -n "${DOXYGEN}")
AC_CHECK_TOOLS([NM], [eu-nm nm], [:])
AC_CHECK_TOOLS([READELF], [eu-readelf readelf], [:])
AM_PATH_PYTHON([2.6],, [:])
AM_CONDITIONAL([HAVE_PYTHON], [test "$PYTHON" != :])
## local helper functions
# this function checks if CC support options passed as
# args. Global CFLAGS are ignored during this test.
cc_supports_flag() {
BACKUP="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $@ -Werror"
AC_MSG_CHECKING([whether $CC supports "$@"])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
[RC=0; AC_MSG_RESULT([yes])],
[RC=1; AC_MSG_RESULT([no])])
CPPFLAGS="$BACKUP"
return $RC
}
## cleanup
AC_MSG_NOTICE(Sanitizing prefix: ${prefix})
case $prefix in
NONE) prefix=/usr/local;;
esac
AC_MSG_NOTICE(Sanitizing exec_prefix: ${exec_prefix})
case $exec_prefix in
NONE) exec_prefix=$prefix;;
prefix) exec_prefix=$prefix;;
esac
# Checks for libraries.
AX_PTHREAD(,[AC_MSG_ERROR([POSIX threads support is required])])
AX_SAVE_FLAGS
AC_SEARCH_LIBS([dlopen],[dl],,[AC_MSG_ERROR([cannot find dlopen() function])])
AC_SUBST([dlopen_LIBS],[$LIBS])
AX_RESTORE_FLAGS
AX_SAVE_FLAGS
AC_SEARCH_LIBS([socket], [socket],,[AC_MSG_ERROR([cannot find socket() function])])
AC_SUBST([socket_LIBS],[$LIBS])
AX_RESTORE_FLAGS
AX_SAVE_FLAGS
AC_SEARCH_LIBS([gethostbyname], [nsl],,[AC_MSG_ERROR([cannot find gethostbyname() function])])
AC_SUBST([nsl_LIBS],[$LIBS])
AX_RESTORE_FLAGS
AX_SAVE_FLAGS
AC_SEARCH_LIBS([clock_gettime], [rt],,[AC_MSG_ERROR([cannot find clock_gettime() function])])
AC_SUBST([rt_LIBS],[$LIBS])
AX_RESTORE_FLAGS
USE_JOURNAL="no"
PKG_CHECK_MODULES([SYSTEMD], [libsystemd], [have_systemd=yes],[have_systemd=no])
if test "x$enable_systemd_journal" = "xyes" ; then
if test "x$have_systemd" = "xyes" ; then
AC_DEFINE_UNQUOTED(USE_JOURNAL, 1, [Use systemd journal logging])
USE_JOURNAL="yes"
else
echo "systemd libraries not found, will just use syslog"
fi
fi
# look for testing harness "check"
PKG_CHECK_MODULES([CHECK], [check >= 0.9.4],[with_check=yes],[with_check=no])
AM_CONDITIONAL(HAVE_CHECK, test "${with_check}" = "yes")
# look for GLIB (used for testing integration)
PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.0, have_glib=yes, have_glib=no)
AM_CONDITIONAL(HAVE_GLIB, test x$have_glib = xyes)
AC_SUBST(GLIB_CFLAGS)
AC_SUBST(GLIB_LIBS)
if test x"$have_glib" = xyes; then
AC_DEFINE_UNQUOTED([HAVE_GLIB], [1], [We have glib])
fi
# For building doxygen2man and man pages
PKG_CHECK_MODULES([libxml], [libxml-2.0])
# if we are not cross-compiling, we can use the locally built
# version of doxygen2man, otherwise we can look for
# a locally installed version. If neither are usable, then
# don´t build the man pages
if test "x$cross_compiling" = "xno"; then
AM_CONDITIONAL([BUILD_MAN], [true])
DOXYGEN2MAN="\$(abs_builddir)/../doxygen2man/doxygen2man"
else
AC_CHECK_PROGS([DOXYGEN2MAN], [doxygen2man])
if test "x$DOXYGEN2MAN" = "x"; then
AM_CONDITIONAL([BUILD_MAN], [false])
else
AM_CONDITIONAL([BUILD_MAN], [true])
fi
fi
AC_SUBST(DOXYGEN2MAN)
# Checks for header files.
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([arpa/inet.h link.h fcntl.h inttypes.h limits.h netinet/in.h \
stdint.h stddef.h stdlib.h string.h strings.h \
dlfcn.h time.h sys/time.h sys/types.h sys/stat.h \
sys/param.h sys/socket.h sys/time.h sys/poll.h sys/epoll.h \
sys/uio.h sys/event.h sys/sockio.h sys/un.h sys/resource.h \
syslog.h errno.h unistd.h sys/mman.h \
sys/sem.h sys/ipc.h sys/msg.h netdb.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_UID_T
AC_C_INLINE
AC_TYPE_INT32_T
AC_TYPE_INT64_T
AC_TYPE_INT8_T
AC_TYPE_MODE_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UINT64_T
AC_TYPE_UINT32_T
AC_TYPE_UINT16_T
AC_TYPE_UINT8_T
AC_CHECK_MEMBER([struct sockaddr_un.sun_len],
[AC_DEFINE([HAVE_STRUCT_SOCKADDR_UN_SUN_LEN],
1,
[Define to 1 if struct sockaddr_un has a member sun_len])],
[],
[#include <sys/un.h>])
AC_MSG_CHECKING(looking for union semun in sys/sem.h)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>]],
[[union semun arg; semctl(0, 0, 0, arg);]])],
[
AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED([HAVE_SEMUN], 1, [Define to 1 if you have union semun.])
],
[
AC_MSG_RESULT([no])
]
)
# Checks for library functions
AX_SAVE_FLAGS
LIBS="$LIBS $rt_LIBS"
AC_CHECK_FUNCS([clock_gettime])
AX_RESTORE_FLAGS
AC_FUNC_CHOWN
AC_FUNC_FORK
AC_FUNC_MMAP
AC_FUNC_STRERROR_R
AC_CHECK_FUNCS([alarm fsync fdatasync ftruncate posix_fallocate \
gettimeofday localtime localtime_r \
memset munmap socket \
strchr strrchr strdup strstr strcasecmp \
poll epoll_create epoll_create1 kqueue \
random rand getrlimit sysconf \
getpeerucred getpeereid \
openat unlinkat])
AX_SAVE_FLAGS
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
LIBS="$LIBS $PTHREAD_LIBS"
AC_CHECK_FUNCS([pthread_spin_lock pthread_setschedparam \
pthread_mutexattr_setpshared \
pthread_condattr_setpshared \
sem_timedwait semtimedop])
AX_RESTORE_FLAGS
# Checks for defined macros
AC_MSG_CHECKING(for MSG_NOSIGNAL)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
[[ int f = MSG_NOSIGNAL; ]])],
[ AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_MSG_NOSIGNAL, 1,
[Define this symbol if you have MSG_NOSIGNAL])],
[ AC_MSG_RESULT(no)])
AC_MSG_CHECKING(for SO_NOSIGPIPE )
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
[[ int f = SO_NOSIGPIPE; ]])],
[ AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SO_NOSIGPIPE, 1,
[Define this symbol if you have SO_NOSIGPIPE]) ],
[ AC_MSG_RESULT(no)])
AC_MSG_CHECKING([for RTLD_NEXT])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <dlfcn.h>]],
[[ void *h = RTLD_NEXT; ]])],
[ AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_FAILURE_INJECTION], 1,
[have failure injection])
have_RTLD_NEXT=yes ],
[ AC_MSG_RESULT([no])])
AM_CONDITIONAL(HAVE_SEM_TIMEDWAIT,
[test "x$ac_cv_func_sem_timedwait" = xyes])
AM_CONDITIONAL(HAVE_EPOLL,
[test "x$ac_cv_func_epoll_create" = xyes])
AM_CONDITIONAL(HAVE_POLL,
[test "x$ac_cv_func_poll" = xyes])
AM_CONDITIONAL(HAVE_KQUEUE,
[test "x$ac_cv_func_kqueue" = xyes])
AM_CONDITIONAL(HAVE_FAILURE_INJECTION,
[test "x$have_RTLD_NEXT" = xyes])
AC_CONFIG_LIBOBJ_DIR(lib)
AC_REPLACE_FUNCS(strlcpy strlcat strchrnul)
## local defines
PACKAGE_FEATURES=""
if test x$ac_cv_func_epoll_create = xyes; then
PACKAGE_FEATURES="$PACKAGE_FEATURES epoll"
fi
nongcc_memory_barrier_needed=no
arch_force_shmlba=no
file_sync=fdatasync
AC_MSG_CHECKING([for architecture in ${host_cpu}])
case $host_cpu in
sparc*)
AC_MSG_RESULT([sparc])
AC_DEFINE_UNQUOTED([QB_ARCH_SPARC], [1], [sparc])
nongcc_memory_barrier_needed=yes
arch_force_shmlba=yes
;;
alpha*)
AC_MSG_RESULT([alpha])
AC_DEFINE_UNQUOTED([QB_ARCH_ALPHA], [1], [alpha])
nongcc_memory_barrier_needed=yes
;;
powerpc*)
AC_MSG_RESULT([powerpc])
AC_DEFINE_UNQUOTED([QB_ARCH_POWERPC], [1], [powerpc])
nongcc_memory_barrier_needed=yes
arch_force_shmlba=yes
;;
ia64)
AC_MSG_RESULT([ia64])
AC_DEFINE_UNQUOTED([QB_ARCH_IA64], [1], [ia64])
nongcc_memory_barrier_needed=yes
;;
arm*)
AC_MSG_RESULT([arm])
AC_DEFINE_UNQUOTED([QB_ARCH_ARM], [1], [arm])
arch_force_shmlba=yes
;;
hppa*)
AC_MSG_RESULT([hppa])
AC_DEFINE_UNQUOTED([QB_ARCH_HPPA], [1], [hppa])
;;
mips*)
AC_MSG_RESULT([ia64])
AC_DEFINE_UNQUOTED([QB_ARCH_MIPS], [1], [mips])
arch_force_shmlba=yes
;;
+ loongson*)
+ AC_MSG_RESULT([loongson])
+ AC_DEFINE_UNQUOTED([QB_ARCH_LOONGSON], [1], [loongson])
+ arch_force_shmlba=yes
+ ;;
*)
AC_MSG_RESULT([${host_cpu}])
;;
esac
if test $arch_force_shmlba = yes; then
AC_DEFINE_UNQUOTED([QB_FORCE_SHM_ALIGN], [1],
[shared and fixed mmap must align on 16k])
fi
# OS detection
# THIS SECTION MUST DIE!
CP=cp
AC_MSG_CHECKING([for os in ${host_os}])
case "$host_os" in
*linux*)
AC_DEFINE_UNQUOTED([QB_LINUX], [1],
[Compiling for Linux platform])
AC_MSG_RESULT([Linux])
;;
*cygwin*)
AC_DEFINE_UNQUOTED([QB_CYGWIN], [1],
[Compiling for Cygwin platform])
nongcc_memory_barrier_needed=yes
gcc_has_builtin_sync_operations=no
AC_MSG_RESULT([Cygwin])
;;
darwin*)
AC_DEFINE_UNQUOTED([QB_DARWIN], [1],
[Compiling for Darwin platform])
CP=rsync
dnl Attribute section appears to work here but fails later with:
dnl cc1: error in backend: Global variable 'descriptor.4902'
dnl has an invalid section specifier '__verbose': mach-o
dnl section specifier requires a segment and section
dnl separated by a comma
AC_DEFINE_UNQUOTED([DISABLE_POSIX_THREAD_PROCESS_SHARED], [1],
[Disable _POSIX_THREAD_PROCESS_SHARED])
AC_MSG_RESULT([Darwin])
;;
*bsd*)
AC_DEFINE_UNQUOTED([QB_BSD], [1],
[Compiling for BSD platform])
case "$host_os" in
*netbsd*)
AC_DEFINE_UNQUOTED([UNIX_PATH_MAX], [103],
[Unix path length])
;;
*openbsd*)
AC_DEFINE_UNQUOTED([UNIX_PATH_MAX], [104],
[Unix path length])
;;
esac
AC_MSG_RESULT([BSD])
;;
*solaris*)
AC_DEFINE_UNQUOTED(DISABLE_IPC_SHM, 1,
[Disable shared mem ipc])
AC_DEFINE_UNQUOTED([QB_SOLARIS], [1],
[Compiling for Solaris platform])
CP=rsync
AC_MSG_RESULT([Solaris])
;;
*gnu*)
AC_DEFINE_UNQUOTED([QB_GNU], [1],
[Compiling for GNU/Hurd platform])
AC_MSG_RESULT([GNU])
;;
*)
AC_MSG_ERROR([Unsupported OS? hmmmm])
;;
esac
dnl break on first hit, fallthrough otherwise, until empty or unsupported
dnl string reached; output QB_FILE_SYNC macro operates on a file descriptor
while : ; do
case ${file_sync} in
fdatasync)
test "x${ac_cv_func_fdatasync}" = "xno" || break
file_sync=fsync
dnl Darwin provides the function but doesn't have it in headers
case "$host_os" in
darwin*)
AH_BOTTOM([int fdatasync(int fildes);])
;;
esac
;;
fsync)
test "x${ac_cv_func_fsync}" = "xno" || break
file_sync=;;
"")
break;;
*)
AC_MSG_ERROR([Cannot select file sync method]);;
esac
done
if test "x${file_sync}" != x; then
AC_DEFINE_UNQUOTED([QB_FILE_SYNC(fd)], [${file_sync}(fd)], [File sync method])
else
AC_MSG_WARN([No file sync method applicable!])
AC_DEFINE([QB_FILE_SYNC(x)], [], [File sync method])
fi
AC_MSG_CHECKING([whether GCC supports builtin sync intrinsics])
if test -z "$gcc_has_builtin_sync_operations"; then
gcc_has_builtin_sync_operations=no
if test x"$GCC" = xyes && test x$have_mingw != xyes; then
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
[[int i;
__sync_synchronize ();
__sync_bool_compare_and_swap (&i, 0, 1);
__sync_fetch_and_add (&i, 1);
]])],
[gcc_has_builtin_sync_operations=yes],
[gcc_has_builtin_sync_operations=no])
fi
fi
AC_MSG_RESULT($gcc_has_builtin_sync_operations)
AM_CONDITIONAL(HAVE_GCC_BUILTINS_FOR_SYNC_OPERATIONS,
[test "x$gcc_has_builtin_sync_operations" = xyes])
if test "x$gcc_has_builtin_sync_operations" = xyes; then
AC_DEFINE_UNQUOTED(HAVE_GCC_BUILTINS_FOR_SYNC_OPERATIONS, 1,
[have builtin sync operations])
fi
# __atomic_XXX
AC_MSG_CHECKING([whether GCC supports builtin atomic intrinsics])
if test -z "$gcc_has_builtin_atomic_operations"; then
gcc_has_builtin_atomic_operations=no
if test x"$GCC" = xyes && test x$have_mingw != xyes; then
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
[[int i;
__atomic_load_n(&i, __ATOMIC_ACQUIRE);
__atomic_exchange_n(&i, 0, __ATOMIC_RELEASE);
]])],
[gcc_has_builtin_atomic_operations=yes],
[gcc_has_builtin_atomic_operations=no])
fi
fi
AC_MSG_RESULT($gcc_has_builtin_atomic_operations)
AM_CONDITIONAL(HAVE_GCC_BUILTINS_FOR_ATOMIC_OPERATIONS,
[test "x$gcc_has_builtin_atomic_operations" = xyes])
if test "x$gcc_has_builtin_atomic_operations" = xyes; then
AC_DEFINE_UNQUOTED(HAVE_GCC_BUILTINS_FOR_ATOMIC_OPERATIONS, 1,
[have builtin atomic operations])
fi
AC_MSG_CHECKING([whether atomics need memory barrier])
if test -n "$ac_cv_atomic_need_memory_barrier"; then
memory_barrier_needed=$ac_cv_atomic_need_memory_barrier
else
if test x$gcc_has_builtin_sync_operations = xyes; then
memory_barrier_needed=yes
PACKAGE_FEATURES="$PACKAGE_FEATURES gcc__sync"
else
memory_barrier_needed=$nongcc_memory_barrier_needed
AC_MSG_WARN([-----------------------------])
AC_MSG_WARN([You have gcc but not __sync_bool_compare_and_swap])
AC_MSG_WARN([try CFLAGS="-march=<your arch> -mtune=native" ./configure])
AC_MSG_WARN([-----------------------------])
fi
fi
AC_MSG_RESULT($memory_barrier_needed)
if test x"$memory_barrier_needed" != xno; then
AC_DEFINE_UNQUOTED(QB_ATOMIC_OP_MEMORY_BARRIER_NEEDED, 1,
[need atomic memory barrier])
fi
LINT_FLAGS="-weak -D__gnuc_va_list=va_list -D__attribute\(x\)= \
-badflag -fcnuse -syntax -unrecog -sysunrecog -warnposix \
+ignoresigns +matchanyintegral +posixlib \
+showscan +showsummary"
# local options
AC_ARG_ENABLE([ansi],
[AS_HELP_STRING([--enable-ansi],[force to build with ANSI standards])])
AC_ARG_ENABLE([fatal-warnings],
[AS_HELP_STRING([--enable-fatal-warnings],[enable fatal warnings])])
AC_ARG_ENABLE([debug],
[AS_HELP_STRING([--enable-debug],[enable debug build])])
AC_ARG_WITH([sanitizers],
[AS_HELP_STRING([--with-sanitizers=...,...],
[enable SANitizer build, do *NOT* use for production. Only ASAN/UBSAN/TSAN are currently supported])],
[ SANITIZERS="$withval" ],
[ SANITIZERS="" ])
AC_ARG_ENABLE([coverage],
[AS_HELP_STRING([--enable-coverage],[coverage analysis of the codebase])])
AC_ARG_ENABLE([interlib-deps],
[AS_HELP_STRING([--disable-interlib-deps],
[disable inter-library dependencies (might break builds)])])
AC_ARG_ENABLE([slow-tests],
[AS_HELP_STRING([--enable-slow-tests],[build and run slow tests])])
AC_ARG_WITH([socket-dir],
[AS_HELP_STRING([--with-socket-dir=DIR],[socket directory @<:@LOCALSTATEDIR/run@:>@])],
[ SOCKETDIR="$withval" ],
[ SOCKETDIR="$localstatedir/run" ])
AC_ARG_ENABLE([systemd-journal],
[AS_HELP_STRING([--enable-systemd-journal],[Allow use of systemd journal instead of syslog])])
AC_ARG_WITH([force-sockets-config-file],
[AS_HELP_STRING([--with-force-sockets-config-file=FILE],[config file to force IPC to use filesystem sockets (Linux & Cygwin only) @<:@SYSCONFDIR/libqb/force-filesystem-sockets@:>@])],
[ FORCESOCKETSFILE="$withval" ],
[ FORCESOCKETSFILE="$sysconfdir/libqb/force-filesystem-sockets" ])
AC_ARG_ENABLE([tests],
[AS_HELP_STRING([--disable-tests],[disable tests])],,
[ enable_tests="yes" ])
AM_CONDITIONAL([ENABLE_TESTS], [test x$enable_tests = xyes])
AC_ARG_ENABLE([install-tests],
[AS_HELP_STRING([--enable-install-tests],[install tests])],,
[ enable_install_tests="no" ])
AM_CONDITIONAL([INSTALL_TESTS], [test x$enable_install_tests = xyes])
AC_ARG_WITH([testdir],
[AS_HELP_STRING([--with-testdir=DIR],[path to /usr/lib../libqb/tests/ dir where to install the test suite])],
[ TESTDIR="$withval" ],
[ TESTDIR="$libdir/libqb/tests" ])
AC_SUBST([TESTDIR])
AC_SUBST(CP)
# *FLAGS handling goes here
ENV_CFLAGS="$CFLAGS"
ENV_CPPFLAGS="$CPPFLAGS"
ENV_LDFLAGS="$LDFLAGS"
# debug build stuff
if test "x${enable_debug}" = xyes; then
AC_DEFINE_UNQUOTED([DEBUG], [1], [Compiling Debugging code])
OPT_CFLAGS="-O0"
if test "x${GCC}" = xyes; then
GDB_FLAGS="-ggdb3"
else
GDB_FLAGS="-g"
fi
PACKAGE_FEATURES="$PACKAGE_FEATURES debug"
fi
# extra warnings
EXTRA_WARNINGS=""
WARNLIST="
all
extra
unused
shadow
missing-prototypes
missing-declarations
suggest-attribute=noreturn
suggest-attribute=format
property-attribute-mismatch
strict-prototypes
pointer-arith
write-strings
cast-align
bad-function-cast
missing-format-attribute
float-equal
format=2
format-signedness
shift-overflow
shift-overflow=2
overlength-strings
redundent-decls
init-self
uninitialized
unknown-pragmas
no-unused-parameter
unused-const-variable
no-format-nonliteral
no-format-truncation
no-sign-compare
"
# at least no-sign-compare assumed temporary!
for j in $WARNLIST; do
if cc_supports_flag -W$j; then
EXTRA_WARNINGS="$EXTRA_WARNINGS -W$j";
fi
done
# warnings suppression
gcc_format_complaints=no
if test x"$GCC" = xyes && cc_supports_flag -Wmissing-format-attribute; then
gcc_format_complaints=yes
AC_DEFINE([HAVE_GCC_MISSING_FORMAT_ATTRIBUTE], [],
[gcc supports -Wmissing-format-attribute])
fi
if test x"$GCC" = xyes && cc_supports_flag -Wsuggest-attribute=format; then
gcc_format_complaints=yes
AC_DEFINE([HAVE_GCC_SUGGEST_ATTRIBUTE_FORMAT], [],
[gcc supports -Wsuggest-attribute=format])
fi
dnl pretend GCC (<4.6) is not capable of format complaints when it does not
dnl support diagnostic push/pop pragmas (cannot track state reliably, then)
if test x"$gcc_format_complaints" = xyes; then
backup_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#pragma GCC diagnostic push
#pragma GCC diagnostic pop
]])], AC_DEFINE([HAVE_GCC_FORMAT_COMPLAINTS], [],
[gcc can complain about missing format attribute]))
CFLAGS="$backup_CFLAGS"
fi
# --- coverage ---
if test "x${enable_coverage}" = xyes && \
cc_supports_flag -ftest-coverage && \
cc_supports_flag -fprofile-arcs ; then
AC_MSG_NOTICE([Enabling Coverage (enable -O0 by default)])
OPT_CFLAGS="-O0"
COVERAGE_CFLAGS="-ftest-coverage -fprofile-arcs"
COVERAGE_LDFLAGS="-ftest-coverage -fprofile-arcs"
PACKAGE_FEATURES="$PACKAGE_FEATURES coverage"
else
COVERAGE_CFLAGS=""
COVERAGE_LDFLAGS=""
fi
# --- inter-library dependencies ---
# because of debian/ubuntu swimming against the stream
# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=702737,
# override the libtool variable by force because the current
# arrangement relies on transitive dependency propagation
AC_MSG_NOTICE([Enabling inter-library dependencies: $enable_interlib_deps])
if test "x${enable_interlib_deps}" = xno; then
link_all_deplibs=no
else
link_all_deplibs=yes
fi
# --- slow tests ---
if test "x${enable_slow_tests}" = xyes ; then
AC_DEFINE([HAVE_SLOW_TESTS], 1,[have slow tests])
AC_MSG_NOTICE([Enabling Slow tests])
fi
AM_CONDITIONAL(HAVE_SLOW_TESTS, [test "x${enable_slow_tests}" = xyes])
AC_SUBST(HAVE_SLOW_TESTS)
# --- ansi ---
if test "x${enable_ansi}" = xyes && \
cc_supports_flag -std=iso9899:199409 ; then
AC_MSG_NOTICE([Enabling ANSI Compatibility])
ANSI_CPPFLAGS="-ansi -D_GNU_SOURCE -DANSI_ONLY"
PACKAGE_FEATURES="$PACKAGE_FEATURES ansi"
else
ANSI_CPPFLAGS=""
fi
# --- fatal warnings ---
if test "x${enable_fatal_warnings}" = xyes && \
cc_supports_flag -Werror ; then
AC_MSG_NOTICE([Enabling Fatal Warnings (-Werror)])
WERROR_CFLAGS="-Werror"
PACKAGE_FEATURES="$PACKAGE_FEATURES fatal-warnings"
else
WERROR_CFLAGS=""
fi
# --- ASAN/UBSAN/TSAN (see man gcc) ---
# when using SANitizers, we need to pass the -fsanitize..
# to both CFLAGS and LDFLAGS. The CFLAGS/LDFLAGS must be
# specified as first in the list or there will be runtime
# issues (for example user has to LD_PRELOAD asan for it to work
# properly).
if test -n "${SANITIZERS}"; then
SANITIZERS=$(echo $SANITIZERS | sed -e 's/,/ /g')
for SANITIZER in $SANITIZERS; do
case $SANITIZER in
asan|ASAN)
SANITIZERS_CFLAGS="$SANITIZERS_CFLAGS -fsanitize=address"
SANITIZERS_LDFLAGS="$SANITIZERS_LDFLAGS -fsanitize=address -lasan"
AC_CHECK_LIB([asan],[main],,AC_MSG_ERROR([Unable to find libasan]))
;;
ubsan|UBSAN)
SANITIZERS_CFLAGS="$SANITIZERS_CFLAGS -fsanitize=undefined"
SANITIZERS_LDFLAGS="$SANITIZERS_LDFLAGS -fsanitize=undefined -lubsan"
AC_CHECK_LIB([ubsan],[main],,AC_MSG_ERROR([Unable to find libubsan]))
;;
tsan|TSAN)
SANITIZERS_CFLAGS="$SANITIZERS_CFLAGS -fsanitize=thread"
SANITIZERS_LDFLAGS="$SANITIZERS_LDFLAGS -fsanitize=thread -ltsan"
AC_CHECK_LIB([tsan],[main],,AC_MSG_ERROR([Unable to find libtsan]))
;;
esac
done
fi
# final build of *FLAGS
CFLAGS="$SANITIZERS_CFLAGS $ENV_CFLAGS $OPT_CFLAGS $GDB_FLAGS \
$COVERAGE_CFLAGS $EXTRA_WARNINGS $WERROR_CFLAGS"
CPPFLAGS="$ENV_CPPFLAGS $ANSI_CPPFLAGS"
LDFLAGS="$SANITIZERS_LDFLAGS $ENV_LDFLAGS $COVERAGE_LDFLAGS"
if test -f /usr/share/dict/words ; then
HAVE_DICT_WORDS=yes
AC_DEFINE([HAVE_DICT_WORDS], 1, "Have /usr/share/dict/words")
fi
AM_CONDITIONAL([HAVE_DICT_WORDS], [test "x$HAVE_DICT_WORDS" = xyes])
# substitute what we need:
AC_SUBST([SOCKETDIR])
AC_SUBST([LINT_FLAGS])
AC_SUBST([FORCESOCKETSFILE])
AC_DEFINE_UNQUOTED([SOCKETDIR], "$(eval echo ${SOCKETDIR})", [Socket directory])
AC_DEFINE_UNQUOTED([LOCALSTATEDIR], "$(eval echo ${localstatedir})", [localstate directory])
AC_DEFINE_UNQUOTED([PACKAGE_FEATURES], "${PACKAGE_FEATURES}", [quarterback built-in features])
AC_DEFINE_UNQUOTED([FORCESOCKETSFILE], "$(eval echo ${FORCESOCKETSFILE})", [for sockets config file])
# version parsing (for qbconfig.h)
AC_DEFINE_UNQUOTED([QB_VER_MAJOR],
[$(echo "${VERSION}" \
| sed -e 's|^\([[0-9]][[0-9]]*\).*|\1|' \
-e t -e 's|.*|1|')],
[libqb major version])
AC_DEFINE_UNQUOTED([QB_VER_MINOR],
[$(echo "${VERSION}" \
| sed -e 's|^[[0-9]][[0-9]]*\.\([[0-9]][[0-9]]*\).*|\1|' \
-e t -e 's|.*|0|')],
[libqb minor version])
AC_DEFINE_UNQUOTED([QB_VER_MICRO],
[$(echo "${VERSION}" \
| sed -e 's|^[[0-9]][[0-9]]*\.[[0-9]][[0-9]]*\.\([[0-9]][[0-9]]*\).*|\1|' \
-e t -e 's|.*|0|')],
[libqb patch version])
AC_DEFINE_UNQUOTED([QB_VER_REST],
[$(echo "${VERSION}" \
| sed -e 's|^[[0-9]][[0-9]]*\(\.[[0-9]][[0-9]]*\)\{0,2\}\(.*\)|"\2"|' \
-e t -e 's|.*|""|')],
[libqb patch version])
AX_PROG_DATE
AS_IF([test "$ax_cv_prog_date_gnu_date:$ax_cv_prog_date_gnu_utc" = yes:yes],
[UTC_DATE_AT="date -u -d@"],
[AS_IF([test "x$ax_cv_prog_date_bsd_date" = xyes],
[UTC_DATE_AT="date -u -r"],
[AC_MSG_ERROR([date utility unable to convert epoch to UTC])])])
AC_SUBST([UTC_DATE_AT])
AC_ARG_VAR([SOURCE_EPOCH],[last modification date of the source])
AC_MSG_NOTICE([trying to determine source epoch])
AC_MSG_CHECKING([for source epoch in \$SOURCE_EPOCH])
AS_IF([test -n "$SOURCE_EPOCH"],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
AC_MSG_CHECKING([for source epoch in source_epoch file])
AS_IF([test -e "$srcdir/source_epoch"],
[read SOURCE_EPOCH <"$srcdir/source_epoch"
AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
AC_MSG_CHECKING([for source epoch baked in by gitattributes export-subst])
SOURCE_EPOCH='$Format:%ct$' # template for rewriting by git-archive
AS_CASE([$SOURCE_EPOCH],
[?Format:*], # was not rewritten
[AC_MSG_RESULT([no])
AC_MSG_CHECKING([for source epoch in \$SOURCE_DATE_EPOCH])
AS_IF([test "x$SOURCE_DATE_EPOCH" != x],
[SOURCE_EPOCH="$SOURCE_DATE_EPOCH"
AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
AC_MSG_CHECKING([whether git log can provide a source epoch])
SOURCE_EPOCH=f${SOURCE_EPOCH#\$F} # convert into git log --pretty format
SOURCE_EPOCH=$(cd "$srcdir" && git log -1 --pretty=${SOURCE_EPOCH%$} 2>/dev/null)
AS_IF([test -n "$SOURCE_EPOCH"],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no, using current time and breaking reproducibility])
SOURCE_EPOCH=$(date +%s)])])],
[AC_MSG_RESULT([yes])]
)])
])
AC_MSG_NOTICE([using source epoch $($UTC_DATE_AT$SOURCE_EPOCH +'%F %T %Z')])
AC_CONFIG_FILES([Makefile
include/Makefile
include/qb/Makefile
lib/Makefile
lib/libqb.pc
tools/Makefile
tests/Makefile
tests/test.conf
examples/Makefile
doxygen2man/Makefile
docs/Makefile
docs/man.dox
lib/qblog_script.la:lib/qblog_script.la.in])
AC_OUTPUT
AC_MSG_RESULT([])
AC_MSG_RESULT([$PACKAGE configuration:])
AC_MSG_RESULT([ Version = ${VERSION}])
AC_MSG_RESULT([ Prefix = ${prefix}])
AC_MSG_RESULT([ Executables = ${sbindir}])
AC_MSG_RESULT([ Man pages = ${mandir}])
AC_MSG_RESULT([ Doc dir = ${docdir}])
AC_MSG_RESULT([ Libraries = ${libdir}])
AC_MSG_RESULT([ Header files = ${includedir}])
AC_MSG_RESULT([ Arch-independent files = ${datadir}])
AC_MSG_RESULT([ State information = ${localstatedir}])
AC_MSG_RESULT([ System configuration = ${sysconfdir}])
AC_MSG_RESULT([ SOCKETDIR = ${SOCKETDIR}])
AC_MSG_RESULT([ Features = ${PACKAGE_FEATURES}])
AC_MSG_RESULT([ Use systemd journal = ${USE_JOURNAL}])
AC_MSG_RESULT([])
AC_MSG_RESULT([$PACKAGE build info:])
AC_MSG_RESULT([ Optimization = ${OPT_CFLAGS}])
AC_MSG_RESULT([ Debug options = ${GDB_CFLAGS}])
AC_MSG_RESULT([ Extra compiler warnings = ${EXTRA_WARNING}])
AC_MSG_RESULT([ Env. defined CFLAG = ${ENV_CFLAGS}])
AC_MSG_RESULT([ Env. defined CPPFLAGS = ${ENV_CPPFLAGS}])
AC_MSG_RESULT([ Env. defined LDFLAGS = ${ENV_LDFLAGS}])
AC_MSG_RESULT([ ANSI defined CPPFLAGS = ${ANSI_CPPFLAGS}])
AC_MSG_RESULT([ Coverage CFLAGS = ${COVERAGE_CFLAGS}])
AC_MSG_RESULT([ Coverage LDFLAGS = ${COVERAGE_LDFLAGS}])
AC_MSG_RESULT([ Fatal War. CFLAGS = ${WERROR_CFLAGS}])
AC_MSG_RESULT([ Final CFLAGS = ${CFLAGS}])
AC_MSG_RESULT([ Final CPPFLAGS = ${CPPFLAGS}])
AC_MSG_RESULT([ Final LDFLAGS = ${LDFLAGS}])
diff --git a/lib/unix.c b/lib/unix.c
index 6bd3cc2..0dc7647 100644
--- a/lib/unix.c
+++ b/lib/unix.c
@@ -1,617 +1,617 @@
/*
* Copyright (C) 2011 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Angus Salkeld <asalkeld@redhat.com>
*
* libqb is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* libqb 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libqb. If not, see <http://www.gnu.org/licenses/>.
*/
#include "os_base.h"
#ifdef HAVE_SYS_SHM_H
#include <sys/shm.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#if defined(HAVE_FCNTL_H) && defined(HAVE_POSIX_FALLOCATE)
#include <fcntl.h>
#endif
#include "util_int.h"
#include <qb/qbdefs.h>
#include <qb/qbutil.h>
#include <qb/qbatomic.h>
#if defined(MAP_ANON) && ! defined(MAP_ANONYMOUS)
/*
* BSD derivatives usually have MAP_ANON, not MAP_ANONYMOUS
**/
#define MAP_ANONYMOUS MAP_ANON
#endif
char *
qb_strerror_r(int errnum, char *buf, size_t buflen)
{
#ifdef STRERROR_R_CHAR_P
return strerror_r(errnum, buf, buflen);
#else
if (strerror_r(errnum, buf, buflen) != 0) {
buf[0] = '\0';
}
return buf;
#endif /* STRERROR_R_CHAR_P */
}
static int32_t
open_mmap_file(char *path, uint32_t file_flags)
{
if (strstr(path, "XXXXXX") != NULL) {
mode_t old_mode = umask(077);
int32_t temp_fd = mkstemp(path);
(void)umask(old_mode);
return temp_fd;
}
return open(path, file_flags, 0600);
}
#if defined(QB_BSD) || !defined(HAVE_POSIX_FALLOCATE)
static int local_fallocate(int fd, size_t bytes)
{
long page_size = sysconf(_SC_PAGESIZE);
long write_size = QB_MIN(page_size, bytes);
char *buffer = NULL;
int i;
size_t written;
if (page_size < 0) {
goto error_exit;
}
buffer = calloc(1, write_size);
if (buffer == NULL) {
goto error_exit;
}
for (i = 0; i < (bytes / write_size); i++) {
retry_write:
written = write(fd, buffer, write_size);
if (written == -1 && errno == EINTR) {
goto retry_write;
}
if (written != write_size) {
free(buffer);
errno = ENOSPC;
goto error_exit;
}
}
free(buffer);
return 0;
error_exit:
return -1;
}
#endif
int32_t
qb_sys_mmap_file_open(char *path, const char *file, size_t bytes,
uint32_t file_flags)
{
int32_t fd;
int32_t res = 0;
#ifndef HAVE_POSIX_FALLOCATE
ssize_t written;
char *buffer = NULL;
int32_t i;
#endif
char *is_absolute = strchr(file, '/');
#ifdef HAVE_POSIX_FALLOCATE
int32_t fallocate_retry = 5;
#endif
if (is_absolute) {
(void)strlcpy(path, file, PATH_MAX);
} else {
#if defined(QB_LINUX) || defined(QB_CYGWIN)
/* This is only now called when talking to an old libqb
where we need to add qb- to the name */
snprintf(path, PATH_MAX, "/dev/shm/qb-%s", file);
#else
snprintf(path, PATH_MAX, "%s/%s", SOCKETDIR, file);
is_absolute = path;
#endif
}
fd = open_mmap_file(path, file_flags);
if (fd < 0 && !is_absolute) {
qb_util_perror(LOG_ERR, "couldn't open file %s", path);
snprintf(path, PATH_MAX, "%s/%s", SOCKETDIR, file);
fd = open_mmap_file(path, file_flags);
if (fd < 0) {
res = -errno;
qb_util_perror(LOG_ERR, "couldn't open file %s", path);
return res;
}
} else if (fd < 0 && is_absolute) {
res = -errno;
qb_util_perror(LOG_ERR, "couldn't open file %s", path);
return res;
}
#ifndef _WIN32
/* ftruncate not supported on WSL
https://github.com/microsoft/WSL/issues/902 */
if (ftruncate(fd, bytes) == -1) {
res = -errno;
qb_util_perror(LOG_ERR, "couldn't truncate file %s", path);
goto unlink_exit;
}
#endif
#ifdef HAVE_POSIX_FALLOCATE
/* posix_fallocate(3) can be interrupted by a signal,
so retry few times before giving up */
do {
fallocate_retry--;
res = posix_fallocate(fd, 0, bytes);
if (res == EINTR) {
qb_util_log(LOG_DEBUG, "got EINTR trying to allocate file %s, retrying...", path);
continue;
#ifdef QB_BSD
} else if (res == EINVAL) { /* posix_fallocate() fails on ZFS
https://lists.freebsd.org/pipermail/freebsd-current/2018-February/068448.html */
qb_util_log(LOG_DEBUG, "posix_fallocate returned EINVAL - running on ZFS?");
if (file_flags & O_CREAT) {
if (local_fallocate(fd, bytes)) {
goto unlink_exit;
}
}
#endif
} else if (res != 0) {
errno = res;
res = -1 * res;
qb_util_perror(LOG_ERR, "couldn't allocate file %s", path);
goto unlink_exit;
}
break;
} while (fallocate_retry > 0);
#else
if (file_flags & O_CREAT) {
if (local_fallocate(fd, bytes)) {
goto unlink_exit;
}
}
#endif /* HAVE_POSIX_FALLOCATE */
return fd;
unlink_exit:
unlink(path);
if (fd >= 0) {
close(fd);
}
return res;
}
int32_t
qb_sys_circular_mmap(int32_t fd, void **buf, size_t bytes)
{
void *addr_orig = NULL;
void *addr;
void *addr_next;
int32_t res;
int flags = MAP_ANONYMOUS;
#ifdef QB_FORCE_SHM_ALIGN
/* On a number of arches any fixed and shared mmap() mapping address
* must be aligned to 16k. If the first mmap() below is not shared then
* the first mmap() will succeed because these restrictions do not apply to
* private mappings. The second mmap() wants a shared memory mapping but
* the address returned by the first one is only page-aligned and not
* aligned to 16k.
*/
flags |= MAP_SHARED;
#else
flags |= MAP_PRIVATE;
#endif /* QB_FORCE_SHM_ALIGN */
-#if defined(QB_ARCH_HPPA)
+#if defined(QB_ARCH_HPPA) || defined(QB_ARCH_LOONGSON)
/* map twice the size we want to make sure we have already mapped
the second memory location behind it too. Otherwise the Linux
kernel may map it in the upper memory so that we can't map
the second part afterwards since it will conflict. */
addr = mmap(NULL, 2*bytes, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
if (addr == MAP_FAILED)
return -errno;
addr_orig = addr;
#else
addr_orig = mmap(NULL, bytes << 1, PROT_NONE, flags, -1, 0);
if (addr_orig == MAP_FAILED) {
return -errno;
}
addr = mmap(addr_orig, bytes, PROT_READ | PROT_WRITE,
MAP_FIXED | MAP_SHARED, fd, 0);
#endif
if (addr != addr_orig) {
res = -errno;
goto cleanup_fail;
}
#if defined(QB_BSD) && defined(MADV_NOSYNC)
madvise(addr_orig, bytes, MADV_NOSYNC);
#endif
addr_next = ((char *)addr_orig) + bytes;
addr = mmap(addr_next,
bytes, PROT_READ | PROT_WRITE,
MAP_FIXED | MAP_SHARED, fd, 0);
if (addr != addr_next) {
res = -errno;
goto cleanup_fail;
}
#if defined(QB_BSD) && defined(MADV_NOSYNC)
madvise(((char *)addr_orig) + bytes, bytes, MADV_NOSYNC);
#endif
res = close(fd);
if (res) {
goto cleanup_fail_noclose;
}
*buf = addr_orig;
return 0;
cleanup_fail:
close(fd);
cleanup_fail_noclose:
if (addr_orig) {
munmap(addr_orig, bytes << 1);
}
return res;
}
int32_t
qb_sys_fd_nonblock_cloexec_set(int32_t fd)
{
int32_t res = 0;
int32_t oldflags = fcntl(fd, F_GETFD, 0);
if (oldflags < 0) {
oldflags = 0;
}
oldflags |= FD_CLOEXEC;
res = fcntl(fd, F_SETFD, oldflags);
if (res == -1) {
res = -errno;
qb_util_perror(LOG_ERR,
"Could not set close-on-exit on fd:%d", fd);
return res;
}
res = fcntl(fd, F_SETFL, O_NONBLOCK);
if (res == -1) {
res = -errno;
qb_util_log(LOG_ERR, "Could not set non-blocking on fd:%d", fd);
}
return res;
}
int32_t
qb_sys_unlink_or_truncate(const char *path, int32_t truncate_fallback)
{
int32_t res = 0;
if (unlink(path) == -1) {
res = errno;
qb_util_perror(LOG_DEBUG,
"Unlinking file: %s",
path);
if (res != ENOENT && truncate_fallback) {
res = errno = 0;
if (truncate(path, 0) == -1) {
res = errno;
qb_util_perror(LOG_DEBUG,
"Truncating file: %s", path);
}
}
}
return -res;
}
#if defined(HAVE_OPENAT) && defined(HAVE_UNLINKAT)
int32_t
qb_sys_unlink_or_truncate_at(int32_t dirfd, const char *path,
int32_t truncate_fallback)
{
int32_t fd, res = 0;
if (unlinkat(dirfd, path, 0) == -1) {
res = errno;
qb_util_perror(LOG_DEBUG,
"Unlinking file at dir: %s", path);
if (res != ENOENT && truncate_fallback) {
res = errno = 0;
if ((fd = openat(dirfd, path, O_WRONLY|O_TRUNC)) == -1) {
res = errno;
qb_util_perror(LOG_DEBUG,
"Truncating file at dir: %s",
path);
} else {
close(fd);
}
}
}
return -res;
}
#endif
void
qb_sigpipe_ctl(enum qb_sigpipe_ctl ctl)
{
#if !defined(HAVE_MSG_NOSIGNAL) && !defined(HAVE_SO_NOSIGPIPE)
struct sigaction act;
struct sigaction oact;
act.sa_handler = SIG_IGN;
if (ctl == QB_SIGPIPE_IGNORE) {
sigaction(SIGPIPE, &act, &oact);
} else {
sigaction(SIGPIPE, &oact, NULL);
}
#endif /* !MSG_NOSIGNAL && !SO_NOSIGPIPE */
}
void
qb_socket_nosigpipe(int32_t s)
{
#if !defined(HAVE_MSG_NOSIGNAL) && defined(HAVE_SO_NOSIGPIPE)
int32_t on = 1;
setsockopt(s, SOL_SOCKET, SO_NOSIGPIPE, (void *)&on, sizeof(on));
#endif /* !MSG_NOSIGNAL && SO_NOSIGPIPE */
}
/*
* atomic operations
* --------------------------------------------------------------------------
*/
#ifndef HAVE_GCC_BUILTINS_FOR_SYNC_OPERATIONS
/*
* We have to use the slow, but safe locking method
*/
static qb_thread_lock_t *qb_atomic_mutex = NULL;
void
qb_atomic_init(void)
{
if (qb_atomic_mutex == NULL) {
qb_atomic_mutex = qb_thread_lock_create(QB_THREAD_LOCK_SHORT);
}
assert(qb_atomic_mutex);
}
int32_t
qb_atomic_int_exchange_and_add(volatile int32_t QB_GNUC_MAY_ALIAS * atomic,
int32_t val)
{
int32_t result;
qb_thread_lock(qb_atomic_mutex);
result = *atomic;
*atomic += val;
qb_thread_unlock(qb_atomic_mutex);
return result;
}
void
qb_atomic_int_add(volatile int32_t QB_GNUC_MAY_ALIAS * atomic, int32_t val)
{
qb_thread_lock(qb_atomic_mutex);
*atomic += val;
qb_thread_unlock(qb_atomic_mutex);
}
int32_t
qb_atomic_int_compare_and_exchange(volatile int32_t QB_GNUC_MAY_ALIAS * atomic,
int32_t oldval, int32_t newval)
{
int32_t result;
qb_thread_lock(qb_atomic_mutex);
if (*atomic == oldval) {
result = QB_TRUE;
*atomic = newval;
} else {
result = QB_FALSE;
}
qb_thread_unlock(qb_atomic_mutex);
return result;
}
int32_t
qb_atomic_pointer_compare_and_exchange(volatile void *QB_GNUC_MAY_ALIAS *
atomic, void *oldval, void *newval)
{
int32_t result;
qb_thread_lock(qb_atomic_mutex);
if (*atomic == oldval) {
result = QB_TRUE;
*atomic = newval;
} else {
result = QB_FALSE;
}
qb_thread_unlock(qb_atomic_mutex);
return result;
}
#ifdef QB_ATOMIC_OP_MEMORY_BARRIER_NEEDED
int32_t
(qb_atomic_int_get) (volatile int32_t QB_GNUC_MAY_ALIAS * atomic)
{
int32_t result;
qb_thread_lock(qb_atomic_mutex);
result = *atomic;
qb_thread_unlock(qb_atomic_mutex);
return result;
}
void
(qb_atomic_int_set) (volatile int32_t QB_GNUC_MAY_ALIAS * atomic,
int32_t newval)
{
qb_thread_lock(qb_atomic_mutex);
*atomic = newval;
qb_thread_unlock(qb_atomic_mutex);
}
void *
(qb_atomic_pointer_get) (volatile void *QB_GNUC_MAY_ALIAS * atomic)
{
void *result;
qb_thread_lock(qb_atomic_mutex);
result = (void*)*atomic;
qb_thread_unlock(qb_atomic_mutex);
return result;
}
void
(qb_atomic_pointer_set) (volatile void *QB_GNUC_MAY_ALIAS * atomic,
void *newval)
{
qb_thread_lock(qb_atomic_mutex);
*atomic = newval;
qb_thread_unlock(qb_atomic_mutex);
}
#endif /* QB_ATOMIC_OP_MEMORY_BARRIER_NEEDED */
#else
/*
* gcc built-ins
*/
void
qb_atomic_init(void)
{
}
int32_t
qb_atomic_int_exchange_and_add(volatile int32_t QB_GNUC_MAY_ALIAS * atomic,
int32_t val)
{
return __sync_fetch_and_add(atomic, val);
}
void
qb_atomic_int_add(volatile int32_t QB_GNUC_MAY_ALIAS * atomic, int32_t val)
{
__sync_fetch_and_add(atomic, val);
}
int32_t
qb_atomic_int_compare_and_exchange(volatile int32_t QB_GNUC_MAY_ALIAS * atomic,
int32_t oldval, int32_t newval)
{
return __sync_bool_compare_and_swap(atomic, oldval, newval);
}
int32_t
qb_atomic_pointer_compare_and_exchange(volatile void *QB_GNUC_MAY_ALIAS *
atomic, void *oldval, void *newval)
{
return __sync_bool_compare_and_swap(atomic, oldval, newval);
}
#ifdef QB_ATOMIC_OP_MEMORY_BARRIER_NEEDED
#define QB_ATOMIC_MEMORY_BARRIER __sync_synchronize ()
int32_t
(qb_atomic_int_get) (volatile int32_t QB_GNUC_MAY_ALIAS * atomic)
{
QB_ATOMIC_MEMORY_BARRIER;
return *atomic;
}
void
(qb_atomic_int_set) (volatile int32_t QB_GNUC_MAY_ALIAS * atomic,
int32_t newval)
{
*atomic = newval;
QB_ATOMIC_MEMORY_BARRIER;
}
void *
(qb_atomic_pointer_get) (volatile void *QB_GNUC_MAY_ALIAS * atomic)
{
QB_ATOMIC_MEMORY_BARRIER;
return (void*)*atomic;
}
void
(qb_atomic_pointer_set) (volatile void *QB_GNUC_MAY_ALIAS * atomic,
void *newval)
{
*atomic = newval;
QB_ATOMIC_MEMORY_BARRIER;
}
#endif /* QB_ATOMIC_OP_MEMORY_BARRIER_NEEDED */
#endif /* HAVE_GCC_BUILTINS_FOR_SYNC_OPERATIONS */
#ifndef QB_ATOMIC_OP_MEMORY_BARRIER_NEEDED
int32_t
(qb_atomic_int_get) (volatile int32_t QB_GNUC_MAY_ALIAS * atomic)
{
return qb_atomic_int_get(atomic);
}
void
(qb_atomic_int_set) (volatile int32_t QB_GNUC_MAY_ALIAS * atomic,
int32_t newval)
{
qb_atomic_int_set(atomic, newval);
}
void *
(qb_atomic_pointer_get) (volatile void *QB_GNUC_MAY_ALIAS * atomic)
{
return qb_atomic_pointer_get(atomic);
}
void
(qb_atomic_pointer_set) (volatile void *QB_GNUC_MAY_ALIAS * atomic,
void *newval)
{
qb_atomic_pointer_set(atomic, newval);
}
#endif /* !QB_ATOMIC_OP_MEMORY_BARRIER_NEEDED */