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Remove check for accept() argument types

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This check was used to accommodate a staggering variety in particular
in the type of the third argument of accept().  This is no longer of
concern on currently supported systems.  We can just use socklen_t in
the code and put in a simple check that substitutes int for socklen_t
if it's missing, to cover the few stragglers.

Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/3538f4c4-1886-64f2-dcff-aaad8267fb82@enterprisedb.com
This commit is contained in:
Peter Eisentraut 2021-11-09 15:20:47 +01:00
parent 4cd046c203
commit ee3a1a5b63
13 changed files with 31 additions and 178 deletions
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1
aclocal.m4 vendored
View File

@ -1,5 +1,4 @@
dnl aclocal.m4
m4_include([config/ac_func_accept_argtypes.m4])
m4_include([config/ax_prog_perl_modules.m4])
m4_include([config/ax_pthread.m4])
m4_include([config/c-compiler.m4])

78
config/ac_func_accept_argtypes.m4
View File

@ -1,78 +0,0 @@
# config/ac_func_accept_argtypes.m4
# This comes from the official Autoconf macro archive at
# <http://research.cys.de/autoconf-archive/>
dnl @synopsis AC_FUNC_ACCEPT_ARGTYPES
dnl
dnl Checks the data types of the three arguments to accept(). Results are
dnl placed into the symbols ACCEPT_TYPE_RETURN and ACCEPT_TYPE_ARG[123],
dnl consistent with the following example:
dnl
dnl #define ACCEPT_TYPE_RETURN int
dnl #define ACCEPT_TYPE_ARG1 int
dnl #define ACCEPT_TYPE_ARG2 struct sockaddr *
dnl #define ACCEPT_TYPE_ARG3 socklen_t
dnl
dnl NOTE: This is just a modified version of the AC_FUNC_SELECT_ARGTYPES
dnl macro. Credit for that one goes to David MacKenzie et. al.
dnl
dnl @version $Id: ac_func_accept_argtypes.m4,v 1.1 1999/12/03 11:29:29 simons Exp $
dnl @author Daniel Richard G. <skunk@mit.edu>
dnl
# PostgreSQL local changes: In the original version ACCEPT_TYPE_ARG3
# is a pointer type. That's kind of useless because then you can't
# use the macro to define a corresponding variable. We also make the
# reasonable(?) assumption that you can use arg3 for getsocktype etc.
# as well (i.e., anywhere POSIX.2 has socklen_t).
#
# arg2 can also be `const' (e.g., RH 4.2). Change the order of tests
# for arg3 so that `int' is first, in case there is no prototype at all.
#
# Solaris 7 and 8 have arg3 as 'void *' (disguised as 'Psocklen_t'
# which is *not* 'socklen_t *'). If we detect that, then we assume
# 'int' as the result, because that ought to work best.
#
# On Win32, accept() returns 'unsigned int PASCAL'
# Win64 uses SOCKET for return and arg1
AC_DEFUN([AC_FUNC_ACCEPT_ARGTYPES],
[AC_MSG_CHECKING([types of arguments for accept()])
AC_CACHE_VAL(ac_cv_func_accept_return,dnl
[AC_CACHE_VAL(ac_cv_func_accept_arg1,dnl
[AC_CACHE_VAL(ac_cv_func_accept_arg2,dnl
[AC_CACHE_VAL(ac_cv_func_accept_arg3,dnl
[for ac_cv_func_accept_return in 'int' 'SOCKET WSAAPI' 'unsigned int PASCAL'; do
for ac_cv_func_accept_arg1 in 'int' 'SOCKET' 'unsigned int'; do
for ac_cv_func_accept_arg2 in 'struct sockaddr *' 'const struct sockaddr *' 'void *'; do
for ac_cv_func_accept_arg3 in 'int' 'size_t' 'socklen_t' 'unsigned int' 'void'; do
AC_COMPILE_IFELSE([AC_LANG_SOURCE(
[#include <sys/types.h>
#include <sys/socket.h>
extern $ac_cv_func_accept_return accept ($ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3 *);])],
[ac_not_found=no; break 4], [ac_not_found=yes])
done
done
done
done
if test "$ac_not_found" = yes; then
AC_MSG_ERROR([could not determine argument types])
fi
if test "$ac_cv_func_accept_arg3" = "void"; then
ac_cv_func_accept_arg3=int
fi
])dnl AC_CACHE_VAL
])dnl AC_CACHE_VAL
])dnl AC_CACHE_VAL
])dnl AC_CACHE_VAL
AC_MSG_RESULT([$ac_cv_func_accept_return, $ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3 *])
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_RETURN, $ac_cv_func_accept_return,
[Define to the return type of 'accept'])
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG1, $ac_cv_func_accept_arg1,
[Define to the type of arg 1 of 'accept'])
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG2, $ac_cv_func_accept_arg2,
[Define to the type of arg 2 of 'accept'])
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG3, $ac_cv_func_accept_arg3,
[Define to the type of arg 3 of 'accept'])
])

82
configure vendored
View File

@ -14615,6 +14615,17 @@ cat >>confdefs.h <<_ACEOF
_ACEOF
fi
ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "#include <sys/socket.h>
"
if test "x$ac_cv_type_socklen_t" = xyes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_SOCKLEN_T 1
_ACEOF
fi
ac_fn_c_check_type "$LINENO" "struct sockaddr_un" "ac_cv_type_struct_sockaddr_un" "#include <sys/types.h>
@ -15327,77 +15338,6 @@ if test x"$pgac_cv_var_int_timezone" = xyes ; then
$as_echo "#define HAVE_INT_TIMEZONE 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking types of arguments for accept()" >&5
$as_echo_n "checking types of arguments for accept()... " >&6; }
if ${ac_cv_func_accept_return+:} false; then :
$as_echo_n "(cached) " >&6
else
if ${ac_cv_func_accept_arg1+:} false; then :
$as_echo_n "(cached) " >&6
else
if ${ac_cv_func_accept_arg2+:} false; then :
$as_echo_n "(cached) " >&6
else
if ${ac_cv_func_accept_arg3+:} false; then :
$as_echo_n "(cached) " >&6
else
for ac_cv_func_accept_return in 'int' 'SOCKET WSAAPI' 'unsigned int PASCAL'; do
for ac_cv_func_accept_arg1 in 'int' 'SOCKET' 'unsigned int'; do
for ac_cv_func_accept_arg2 in 'struct sockaddr *' 'const struct sockaddr *' 'void *'; do
for ac_cv_func_accept_arg3 in 'int' 'size_t' 'socklen_t' 'unsigned int' 'void'; do
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <sys/types.h>
#include <sys/socket.h>
extern $ac_cv_func_accept_return accept ($ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3 *);
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
ac_not_found=no; break 4
else
ac_not_found=yes
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
done
done
done
done
if test "$ac_not_found" = yes; then
as_fn_error $? "could not determine argument types" "$LINENO" 5
fi
if test "$ac_cv_func_accept_arg3" = "void"; then
ac_cv_func_accept_arg3=int
fi
fi
fi
fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_accept_return, $ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3 *" >&5
$as_echo "$ac_cv_func_accept_return, $ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3 *" >&6; }
cat >>confdefs.h <<_ACEOF
#define ACCEPT_TYPE_RETURN $ac_cv_func_accept_return
_ACEOF
cat >>confdefs.h <<_ACEOF
#define ACCEPT_TYPE_ARG1 $ac_cv_func_accept_arg1
_ACEOF
cat >>confdefs.h <<_ACEOF
#define ACCEPT_TYPE_ARG2 $ac_cv_func_accept_arg2
_ACEOF
cat >>confdefs.h <<_ACEOF
#define ACCEPT_TYPE_ARG3 $ac_cv_func_accept_arg3
_ACEOF
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether gettimeofday takes only one argument" >&5
$as_echo_n "checking whether gettimeofday takes only one argument... " >&6; }
if ${pgac_cv_func_gettimeofday_1arg+:} false; then :

2
configure.ac
View File

@ -1552,6 +1552,7 @@ PGAC_C_BUILTIN_UNREACHABLE
PGAC_C_COMPUTED_GOTO
PGAC_STRUCT_TIMEZONE
PGAC_UNION_SEMUN
AC_CHECK_TYPES(socklen_t, [], [], [#include <sys/socket.h>])
PGAC_STRUCT_SOCKADDR_UN
PGAC_STRUCT_SOCKADDR_STORAGE
PGAC_STRUCT_SOCKADDR_STORAGE_MEMBERS
@ -1686,7 +1687,6 @@ fi
##
PGAC_VAR_INT_TIMEZONE
AC_FUNC_ACCEPT_ARGTYPES
PGAC_FUNC_GETTIMEOFDAY_1ARG
PGAC_FUNC_WCSTOMBS_L

2
src/backend/libpq/auth.c
View File

@ -3026,7 +3026,7 @@ PerformRadiusTransaction(const char *server, const char *secret, const char *por
struct addrinfo hint;
struct addrinfo *serveraddrs;
int port;
ACCEPT_TYPE_ARG3 addrsize;
socklen_t addrsize;
fd_set fdset;
struct timeval endtime;
int i,

8
src/backend/libpq/pqcomm.c
View File

@ -1632,7 +1632,7 @@ pq_getkeepalivesidle(Port *port)
if (port->default_keepalives_idle == 0)
{
#ifndef WIN32
ACCEPT_TYPE_ARG3 size = sizeof(port->default_keepalives_idle);
socklen_t size = sizeof(port->default_keepalives_idle);
if (getsockopt(port->sock, IPPROTO_TCP, PG_TCP_KEEPALIVE_IDLE,
(char *) &port->default_keepalives_idle,
@ -1717,7 +1717,7 @@ pq_getkeepalivesinterval(Port *port)
if (port->default_keepalives_interval == 0)
{
#ifndef WIN32
ACCEPT_TYPE_ARG3 size = sizeof(port->default_keepalives_interval);
socklen_t size = sizeof(port->default_keepalives_interval);
if (getsockopt(port->sock, IPPROTO_TCP, TCP_KEEPINTVL,
(char *) &port->default_keepalives_interval,
@ -1800,7 +1800,7 @@ pq_getkeepalivescount(Port *port)
if (port->default_keepalives_count == 0)
{
ACCEPT_TYPE_ARG3 size = sizeof(port->default_keepalives_count);
socklen_t size = sizeof(port->default_keepalives_count);
if (getsockopt(port->sock, IPPROTO_TCP, TCP_KEEPCNT,
(char *) &port->default_keepalives_count,
@ -1875,7 +1875,7 @@ pq_gettcpusertimeout(Port *port)
if (port->default_tcp_user_timeout == 0)
{
ACCEPT_TYPE_ARG3 size = sizeof(port->default_tcp_user_timeout);
socklen_t size = sizeof(port->default_tcp_user_timeout);
if (getsockopt(port->sock, IPPROTO_TCP, TCP_USER_TIMEOUT,
(char *) &port->default_tcp_user_timeout,

4
src/backend/postmaster/pgstat.c
View File

@ -391,7 +391,7 @@ static void pgstat_recv_tempfile(PgStat_MsgTempFile *msg, int len);
void
pgstat_init(void)
{
ACCEPT_TYPE_ARG3 alen;
socklen_t alen;
struct addrinfo *addrs = NULL,
*addr,
hints;
@ -624,7 +624,7 @@ retry2:
{
int old_rcvbuf;
int new_rcvbuf;
ACCEPT_TYPE_ARG3 rcvbufsize = sizeof(old_rcvbuf);
socklen_t rcvbufsize = sizeof(old_rcvbuf);
if (getsockopt(pgStatSock, SOL_SOCKET, SO_RCVBUF,
(char *) &old_rcvbuf, &rcvbufsize) < 0)

2
src/include/libpq/pqcomm.h
View File

@ -62,7 +62,7 @@ struct sockaddr_storage
typedef struct
{
struct sockaddr_storage addr;
ACCEPT_TYPE_ARG3 salen;
socklen_t salen;
} SockAddr;
/* Configure the UNIX socket location for the well known port. */

15
src/include/pg_config.h.in
View File

@ -1,17 +1,5 @@
/* src/include/pg_config.h.in. Generated from configure.ac by autoheader. */
/* Define to the type of arg 1 of 'accept' */
#undef ACCEPT_TYPE_ARG1
/* Define to the type of arg 2 of 'accept' */
#undef ACCEPT_TYPE_ARG2
/* Define to the type of arg 3 of 'accept' */
#undef ACCEPT_TYPE_ARG3
/* Define to the return type of 'accept' */
#undef ACCEPT_TYPE_RETURN
/* Define if building universal (internal helper macro) */
#undef AC_APPLE_UNIVERSAL_BUILD
@ -518,6 +506,9 @@
/* Define to 1 if you have the `shm_open' function. */
#undef HAVE_SHM_OPEN
/* Define to 1 if the system has the type `socklen_t'. */
#undef HAVE_SOCKLEN_T
/* Define to 1 if you have spinlocks. */
#undef HAVE_SPINLOCKS

4
src/include/port.h
View File

@ -37,6 +37,10 @@ typedef SOCKET pgsocket;
#define PGINVALID_SOCKET INVALID_SOCKET
#endif
#ifndef HAVE_SOCKLEN_T
typedef int socklen_t;
#endif
/* non-blocking */
extern bool pg_set_noblock(pgsocket sock);
extern bool pg_set_block(pgsocket sock);

2
src/interfaces/libpq/fe-connect.c
View File

@ -2744,7 +2744,7 @@ keep_going: /* We will come back to here until there is
case CONNECTION_STARTED:
{
ACCEPT_TYPE_ARG3 optlen = sizeof(optval);
socklen_t optlen = sizeof(optval);
/*
* Write ready, since we've made it here, so the connection

4
src/port/getpeereid.c
View File

@ -37,7 +37,7 @@ getpeereid(int sock, uid_t *uid, gid_t *gid)
#if defined(SO_PEERCRED)
/* Linux: use getsockopt(SO_PEERCRED) */
struct ucred peercred;
ACCEPT_TYPE_ARG3 so_len = sizeof(peercred);
socklen_t so_len = sizeof(peercred);
if (getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &peercred, &so_len) != 0 ||
so_len != sizeof(peercred))
@ -48,7 +48,7 @@ getpeereid(int sock, uid_t *uid, gid_t *gid)
#elif defined(LOCAL_PEERCRED)
/* Debian with FreeBSD kernel: use getsockopt(LOCAL_PEERCRED) */
struct xucred peercred;
ACCEPT_TYPE_ARG3 so_len = sizeof(peercred);
socklen_t so_len = sizeof(peercred);
if (getsockopt(sock, 0, LOCAL_PEERCRED, &peercred, &so_len) != 0 ||
so_len != sizeof(peercred) ||

5
src/tools/msvc/Solution.pm
View File

@ -205,10 +205,6 @@ sub GenerateFiles
# Every symbol in pg_config.h.in must be accounted for here. Set
# to undef if the symbol should not be defined.
my %define = (
ACCEPT_TYPE_ARG1 => 'unsigned int',
ACCEPT_TYPE_ARG2 => 'struct sockaddr *',
ACCEPT_TYPE_ARG3 => 'int',
ACCEPT_TYPE_RETURN => 'unsigned int PASCAL',
ALIGNOF_DOUBLE => 8,
ALIGNOF_INT => 4,
ALIGNOF_LONG => 4,
@ -365,6 +361,7 @@ sub GenerateFiles
HAVE_SETPROCTITLE_FAST => undef,
HAVE_SETSID => undef,
HAVE_SHM_OPEN => undef,
HAVE_SOCKLEN_T => 1,
HAVE_SPINLOCKS => 1,
HAVE_SRANDOM => undef,
HAVE_STDBOOL_H => 1,