main/musl: cherry-pick flock64 fix from upstream, add getconf

needed for openjdk6/icedtea building

4 files changed, 390 insertions, 1 deletions

diff --git a/main/musl/0002-add-flock64-alias-for-struct-flock-in-fcntl.h.patch b/main/musl/0002-add-flock64-alias-for-struct-flock-in-fcntl.h.patch
new file mode 100644
index 0000000000..c2ec46f1d1
--- /dev/null
+++ b/main/musl/0002-add-flock64-alias-for-struct-flock-in-fcntl.h.patch
@@ -0,0 +1,26 @@
+From fdb3efa5ddfa7120de98f8ae78b5f5dc9e8e2e71 Mon Sep 17 00:00:00 2001
+From: Rich Felker <dalias@aerifal.cx>
+Date: Tue, 18 Feb 2014 11:04:15 -0500
+Subject: [PATCH] add flock64 alias for (struct) flock in fcntl.h
+
+this was a missing part of the LFS64 API; it's "needed" for use with
+fcntl and the corresponding lock commands.
+---
+ include/fcntl.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/include/fcntl.h b/include/fcntl.h
+index e01a4d1..2d8fa6e 100644
+--- a/include/fcntl.h
++++ b/include/fcntl.h
+@@ -161,6 +161,7 @@ ssize_t tee(int, int, size_t, unsigned);
+ #define F_GETLK64 F_GETLK
+ #define F_SETLK64 F_SETLK
+ #define F_SETLKW64 F_SETLKW
++#define flock64 flock
+ #define open64 open
+ #define openat64 openat
+ #define creat64 creat
+-- 
+1.8.5.4
+
diff --git a/main/musl/1002-fix-confstr-return-value.patch b/main/musl/1002-fix-confstr-return-value.patch
new file mode 100644
index 0000000000..ff8f5426b8
--- /dev/null
+++ b/main/musl/1002-fix-confstr-return-value.patch
@@ -0,0 +1,24 @@
+From edb7cd561b8df14eac5ce6a62acd1c4f9f12bb03 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>
+Date: Wed, 19 Feb 2014 09:40:35 +0200
+Subject: [PATCH] fix confstr return value
+
+man page says the terminating null byte is counted.
+---
+ src/conf/confstr.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/conf/confstr.c b/src/conf/confstr.c
+index 4332f72..6e9c23a 100644
+--- a/src/conf/confstr.c
++++ b/src/conf/confstr.c
+@@ -13,5 +13,5 @@ size_t confstr(int name, char *buf, size_t len)
+ 	}
+ 	// snprintf is overkill but avoid wasting code size to implement
+ 	// this completely useless function and its truncation semantics
+-	return snprintf(buf, len, "%s", s);
++	return snprintf(buf, len, "%s", s) + 1;
+ }
+-- 
+1.8.5.4
+
diff --git a/main/musl/APKBUILD b/main/musl/APKBUILD
index d9dd4056b2..1518990bc3 100644
--- a/main/musl/APKBUILD
+++ b/main/musl/APKBUILD
@@ -2,7 +2,7 @@
 # Maintainer: Timo Teräs <timo.teras@iki.fi>
 pkgname=musl
 pkgver=0.9.15
-pkgrel=3
+pkgrel=4
 pkgdesc="the musl c library (libc) implementation"
 url="http://www.musl-libc.org/"
 arch="all"
@@ -15,11 +15,14 @@ subpackages="$pkgname-dev $pkgname-utils"
 [ "${CTARGET#*musl}" = "$CTARGET" ] && subpackages="$subpackages musl-gcc:crosstool"
 source="http://www.musl-libc.org/releases/musl-$pkgver.tar.gz
 	0001-git-0.9.15-to-3e02ce1b411.patch
+	0002-add-flock64-alias-for-struct-flock-in-fcntl.h.patch
 	1001-add-basic-dns-record-parsing-functions.patch
+	1002-fix-confstr-return-value.patch
 	2001-workaround-gcc-pr58245.patch
 
 	getopt_long.c
 	__stack_chk_fail_local.c
+	getconf.c
 	getent
 	ldconfig
 	"
@@ -63,6 +66,9 @@ build() {
 	${CROSS_COMPILE}gcc $CPPFLAGS $CFLAGS -c "$srcdir"/__stack_chk_fail_local.c -o __stack_chk_fail_local.o || return 1
 	${CROSS_COMPILE}ar r libssp_nonshared.a __stack_chk_fail_local.o || return 1
 
+	# getconf
+	${CROSS_COMPILE}gcc $CPPFLAGS $CFLAGS "$srcdir"/getconf.c -o getconf || return 1
+
 	# note: not autotools
 	LDFLAGS="$LDFLAGS -Wl,-soname,libc.musl-${CARCH}.so.1" \
 	./configure \
@@ -97,6 +103,7 @@ utils() {
 	mv "$pkgdir"/usr/bin/ldd "$subpkgdir"/usr/bin
 	find "$pkgdir" -type d -delete 2>/dev/null
 	install -D "$srcdir"/getent "$subpkgdir"/usr/bin/getent
+	install -D "$_builddir"/getconf "$subpkgdir"/usr/bin/getconf
 	install -D "$srcdir"/ldconfig "$subpkgdir"/sbin/ldconfig
 }
 
@@ -109,25 +116,34 @@ crosstool() {
 
 md5sums="06f590a38c85722ee9343db2416425f4  musl-0.9.15.tar.gz
 06ec0e41d9b426acbd47869038ba0588  0001-git-0.9.15-to-3e02ce1b411.patch
+2275f7138a7dc6869122cc68f7f7c710  0002-add-flock64-alias-for-struct-flock-in-fcntl.h.patch
 a3810683ef61ac27e2f6ec9801280c81  1001-add-basic-dns-record-parsing-functions.patch
+499bced87843940199898d1508ef58df  1002-fix-confstr-return-value.patch
 7a09c5cd7b3e9532e6902f54a5e928bb  2001-workaround-gcc-pr58245.patch
 61c6c1e84ed1df82abbe6d75e90cf21c  getopt_long.c
 0df687757221bbb0fc1aa67f1bd646f9  __stack_chk_fail_local.c
+7b391300396e58fe9073866b5a80cfe8  getconf.c
 ef81489a6258501cf45db58dfc6d5211  getent
 33e4fd94e2560e008e2c3b431d0e3419  ldconfig"
 sha256sums="4a7baab8f295511196dee48d33b8b82a159a81233facb89433707c792033cbe7  musl-0.9.15.tar.gz
 8c03e089985384e2fc2765db3b7c09c91bce1144f5ebf2456ce8ca642104e4b0  0001-git-0.9.15-to-3e02ce1b411.patch
+d2146fcf11b2bf7b55b02dccadf4539fdf5b300777bfca6dc98a8188e9c6b1e2  0002-add-flock64-alias-for-struct-flock-in-fcntl.h.patch
 758390768b1bc4159d56908ca332b9640cd0552ed3b4b2b8d4a6d499c54c11a1  1001-add-basic-dns-record-parsing-functions.patch
+dba7e5155efab40829ec0202f1135942004e8e79cff287cbb455355a0d67705f  1002-fix-confstr-return-value.patch
 45d6efda7450809e4e68f6e951431dcadf6cb7f0260930d50a9f1a8667aca49f  2001-workaround-gcc-pr58245.patch
 d9b644ec20bc33e81a7c52b9fcf7973d835923a69faf50f03db45534b811bd96  getopt_long.c
 299a7d75a09de3e2e11e7fb4acc3182e4a14e868093d2f30938fce9bfcff13da  __stack_chk_fail_local.c
+530ea449f93d53fafcb377fa0a23a7564f2961e49c07a8fdef6c960110317301  getconf.c
 d6996273f5aaaed429058257e4646b243d9e3a4d8609522f802762453f5be4cb  getent
 306c6ca7407560340797866e077e053627ad409277d1b9da58106fce4cf717cb  ldconfig"
 sha512sums="2c5f3e742cf29fd76db8079b6012b1b359eda635593995ea8add008abc9744f0ca504e915f7828692aeafc3bddc66e0716492182cd5696e2fa24d9a2289601b8  musl-0.9.15.tar.gz
 b721a91b5ff520b5406ecf43f033a82dc71686ccf2d025293b6457d6e77f3a6619fefeb3f3af620d8297b79f820d2bb7c94ca5695b0a284e19305bd4e54c8bed  0001-git-0.9.15-to-3e02ce1b411.patch
+4167de98c13661c0be2eb83bd36f123f0ab52744dae6bdeb41f793021b0fd8a001280bddba3411093a5c17067261679bb0e9c6c2e9fef8c537c6f0f91627266d  0002-add-flock64-alias-for-struct-flock-in-fcntl.h.patch
 dad965258daf69371b844f76bfe5a914b0eca0ca76f3fc340b8fd7acf598b5f87bbe6d68b1f43ed0293ee0ed3bfd85d5173ccc169aa6265646248d5b8a906708  1001-add-basic-dns-record-parsing-functions.patch
+d4c5f3c5a8ab3a9f1f63a22933bf4dcc67d6aff630066c9e3bb0edf9f46ab8b6e228ded906e4f82b7849d3b7e84ca25c9322bf5c5787fca10203482a38176700  1002-fix-confstr-return-value.patch
 69ad3fc851b44f33dd7c98b83fd0adbd149b37263d17b989f4d7338ee0703dfe8994f4299744e2509492300227d652de6f21b6cdba9b633fcefd3d9f7ca0cf20  2001-workaround-gcc-pr58245.patch
 140f3f20d30bd95ebce8c41b8cc7f616c6cbedf4ea06c729c21014e74f6043796825cc40ebc5180620ea38173afdba23f09ebf6d8b11fa05440b14d23764fca9  getopt_long.c
 062bb49fa54839010acd4af113e20f7263dde1c8a2ca359b5fb2661ef9ed9d84a0f7c3bc10c25dcfa10bb3c5a4874588dff636ac43d5dbb3d748d75400756d0b  __stack_chk_fail_local.c
+d638cdd02371351190fd0545fb83f44b822fa8c930e9fb47ef93d32a1aaee27641f875e10fa2e9833f1a56dfc2055fb89932a89c88da3e2eb17529bca58f5182  getconf.c
 4d92f934d760cf5157d80f19fd766be6b673c65317229b32ac824d9d192f6abcc414e2382b2416dfd5c2f757b46ced98c18e4762bf91f5a48647e0ee61813b06  getent
 69f097faa9ccb981e78c3a914ad68a51771637d9aecd2dbc807003ac30663e6d921091a48ff529dfff27a6cd55b0808f91683118acf7acdf406d37266e622b17  ldconfig"
diff --git a/main/musl/getconf.c b/main/musl/getconf.c
new file mode 100644
index 0000000000..67b894f86b
--- /dev/null
+++ b/main/musl/getconf.c
@@ -0,0 +1,323 @@
+/*-
+ * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by J.T. Conklin.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Fixed to be used with musl in Alpine Linux by Timo Teräs. */
+
+#include <err.h>
+#include <errno.h>
+#include <limits.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+struct conf_variable
+{
+  const char *name;
+  enum { SYSCONF, CONFSTR, PATHCONF, CONSTANT } type;
+  long value;
+};
+
+static const struct conf_variable conf_table[] =
+{
+  { "PATH",			CONFSTR,	_CS_PATH		},
+
+  /* Utility Limit Minimum Values */
+  { "POSIX2_BC_BASE_MAX",	CONSTANT,	_POSIX2_BC_BASE_MAX	},
+  { "POSIX2_BC_DIM_MAX",	CONSTANT,	_POSIX2_BC_DIM_MAX	},
+  { "POSIX2_BC_SCALE_MAX",	CONSTANT,	_POSIX2_BC_SCALE_MAX	},
+  { "POSIX2_BC_STRING_MAX",	CONSTANT,	_POSIX2_BC_STRING_MAX	},
+  { "POSIX2_COLL_WEIGHTS_MAX",	CONSTANT,	_POSIX2_COLL_WEIGHTS_MAX },
+  { "POSIX2_EXPR_NEST_MAX",	CONSTANT,	_POSIX2_EXPR_NEST_MAX	},
+  { "POSIX2_LINE_MAX",		CONSTANT,	_POSIX2_LINE_MAX	},
+  { "POSIX2_RE_DUP_MAX",	CONSTANT,	_POSIX2_RE_DUP_MAX	},
+  { "POSIX2_VERSION",		CONSTANT,	_POSIX2_VERSION		},
+
+  /* POSIX.1 Minimum Values */
+  { "_POSIX_AIO_LISTIO_MAX",	CONSTANT,	_POSIX_AIO_LISTIO_MAX	},
+  { "_POSIX_AIO_MAX",		CONSTANT,       _POSIX_AIO_MAX		},
+  { "_POSIX_ARG_MAX",		CONSTANT,	_POSIX_ARG_MAX		},
+  { "_POSIX_CHILD_MAX",		CONSTANT,	_POSIX_CHILD_MAX	},
+  { "_POSIX_LINK_MAX",		CONSTANT,	_POSIX_LINK_MAX		},
+  { "_POSIX_MAX_CANON",		CONSTANT,	_POSIX_MAX_CANON	},
+  { "_POSIX_MAX_INPUT",		CONSTANT,	_POSIX_MAX_INPUT	},
+  { "_POSIX_MQ_OPEN_MAX",	CONSTANT,	_POSIX_MQ_OPEN_MAX	},
+  { "_POSIX_MQ_PRIO_MAX",	CONSTANT,	_POSIX_MQ_PRIO_MAX	},
+  { "_POSIX_NAME_MAX",		CONSTANT,	_POSIX_NAME_MAX		},
+  { "_POSIX_NGROUPS_MAX",	CONSTANT,	_POSIX_NGROUPS_MAX	},
+  { "_POSIX_OPEN_MAX",		CONSTANT,	_POSIX_OPEN_MAX		},
+  { "_POSIX_PATH_MAX",		CONSTANT,	_POSIX_PATH_MAX		},
+  { "_POSIX_PIPE_BUF",		CONSTANT,	_POSIX_PIPE_BUF		},
+  { "_POSIX_SSIZE_MAX",		CONSTANT,	_POSIX_SSIZE_MAX	},
+  { "_POSIX_STREAM_MAX",	CONSTANT,	_POSIX_STREAM_MAX	},
+  { "_POSIX_TZNAME_MAX",	CONSTANT,	_POSIX_TZNAME_MAX	},
+
+  /* Symbolic Utility Limits */
+  { "BC_BASE_MAX",		SYSCONF,	_SC_BC_BASE_MAX		},
+  { "BC_DIM_MAX",		SYSCONF,	_SC_BC_DIM_MAX		},
+  { "BC_SCALE_MAX",		SYSCONF,	_SC_BC_SCALE_MAX	},
+  { "BC_STRING_MAX",		SYSCONF,	_SC_BC_STRING_MAX	},
+  { "COLL_WEIGHTS_MAX",		SYSCONF,	_SC_COLL_WEIGHTS_MAX	},
+  { "EXPR_NEST_MAX",		SYSCONF,	_SC_EXPR_NEST_MAX	},
+  { "LINE_MAX",			SYSCONF,	_SC_LINE_MAX		},
+  { "RE_DUP_MAX",		SYSCONF,	_SC_RE_DUP_MAX		},
+
+  /* Optional Facility Configuration Values */
+  { "_POSIX2_C_BIND",		SYSCONF,	_SC_2_C_BIND		},
+  { "POSIX2_C_DEV",		SYSCONF,	_SC_2_C_DEV		},
+  { "POSIX2_CHAR_TERM",		SYSCONF,	_SC_2_CHAR_TERM		},
+  { "POSIX2_FORT_DEV",		SYSCONF,	_SC_2_FORT_DEV		},
+  { "POSIX2_FORT_RUN",		SYSCONF,	_SC_2_FORT_RUN		},
+  { "POSIX2_LOCALEDEF",		SYSCONF,	_SC_2_LOCALEDEF		},
+  { "POSIX2_SW_DEV",		SYSCONF,	_SC_2_SW_DEV		},
+  { "POSIX2_UPE",		SYSCONF,	_SC_2_UPE		},
+
+  /* POSIX.1 Configurable System Variables */
+  { "AIO_LISTIO_MAX",		SYSCONF,	_SC_AIO_LISTIO_MAX	},
+  { "AIO_MAX",			SYSCONF,	_SC_AIO_MAX		},
+  { "ARG_MAX",			SYSCONF,	_SC_ARG_MAX 		},
+  { "CHILD_MAX",		SYSCONF,	_SC_CHILD_MAX		},
+  { "CLK_TCK",			SYSCONF,	_SC_CLK_TCK		},
+  { "MQ_OPEN_MAX",		SYSCONF,	_SC_MQ_OPEN_MAX		},
+  { "MQ_PRIO_MAX",		SYSCONF,	_SC_MQ_PRIO_MAX		},
+  { "NGROUPS_MAX",		SYSCONF,	_SC_NGROUPS_MAX		},
+  { "OPEN_MAX",			SYSCONF,	_SC_OPEN_MAX		},
+  { "STREAM_MAX",		SYSCONF,	_SC_STREAM_MAX		},
+  { "TZNAME_MAX",		SYSCONF,	_SC_TZNAME_MAX		},
+  { "_POSIX_JOB_CONTROL",	SYSCONF,	_SC_JOB_CONTROL 	},
+  { "_POSIX_SAVED_IDS",		SYSCONF,	_SC_SAVED_IDS		},
+  { "_POSIX_VERSION",		SYSCONF,	_SC_VERSION		},
+
+  { "LINK_MAX",			PATHCONF,	_PC_LINK_MAX		},
+  { "MAX_CANON",		PATHCONF,	_PC_MAX_CANON		},
+  { "MAX_INPUT",		PATHCONF,	_PC_MAX_INPUT		},
+  { "NAME_MAX",			PATHCONF,	_PC_NAME_MAX		},
+  { "PATH_MAX",			PATHCONF,	_PC_PATH_MAX		},
+  { "PIPE_BUF",			PATHCONF,	_PC_PIPE_BUF		},
+  { "_POSIX_CHOWN_RESTRICTED",	PATHCONF,	_PC_CHOWN_RESTRICTED	},
+  { "_POSIX_NO_TRUNC",		PATHCONF,	_PC_NO_TRUNC		},
+  { "_POSIX_VDISABLE",		PATHCONF,	_PC_VDISABLE		},
+
+  /* POSIX.1b Configurable System Variables */
+  { "PAGESIZE",			SYSCONF,	_SC_PAGESIZE		},
+  { "_POSIX_ASYNCHRONOUS_IO",	SYSCONF,	_SC_ASYNCHRONOUS_IO	},
+  { "_POSIX_FSYNC",		SYSCONF,	_SC_FSYNC		},
+  { "_POSIX_MAPPED_FILES",	SYSCONF,	_SC_MAPPED_FILES	},
+  { "_POSIX_MEMLOCK",		SYSCONF,	_SC_MEMLOCK		},
+  { "_POSIX_MEMLOCK_RANGE",	SYSCONF,	_SC_MEMLOCK_RANGE	},
+  { "_POSIX_MEMORY_PROTECTION",	SYSCONF,	_SC_MEMORY_PROTECTION	},
+  { "_POSIX_MESSAGE_PASSING",	SYSCONF,	_SC_MESSAGE_PASSING	},
+  { "_POSIX_MONOTONIC_CLOCK",	SYSCONF,	_SC_MONOTONIC_CLOCK	},
+  { "_POSIX_PRIORITY_SCHEDULING", SYSCONF,	_SC_PRIORITY_SCHEDULING },
+  { "_POSIX_SEMAPHORES",	SYSCONF,	_SC_SEMAPHORES		},
+  { "_POSIX_SHARED_MEMORY_OBJECTS", SYSCONF,	_SC_SHARED_MEMORY_OBJECTS },
+  { "_POSIX_SYNCHRONIZED_IO",	SYSCONF,	_SC_SYNCHRONIZED_IO	},
+  { "_POSIX_TIMERS",		SYSCONF,	_SC_TIMERS		},
+
+  { "_POSIX_SYNC_IO",		PATHCONF,	_PC_SYNC_IO		},
+
+  /* POSIX.1c Configurable System Variables */
+  { "LOGIN_NAME_MAX",		SYSCONF,	_SC_LOGIN_NAME_MAX	},
+  { "_POSIX_THREADS",		SYSCONF,	_SC_THREADS		},
+
+  /* POSIX.1j Configurable System Variables */
+  { "_POSIX_BARRIERS",		SYSCONF,	_SC_BARRIERS		},
+  { "_POSIX_READER_WRITER_LOCKS", SYSCONF,	_SC_READER_WRITER_LOCKS	},
+  { "_POSIX_SPIN_LOCKS",	SYSCONF,	_SC_SPIN_LOCKS		},
+
+  /* XPG4.2 Configurable System Variables */
+  { "IOV_MAX",			SYSCONF,	_SC_IOV_MAX		},
+  { "PAGE_SIZE",		SYSCONF,	_SC_PAGE_SIZE		},
+  { "_XOPEN_SHM",		SYSCONF,	_SC_XOPEN_SHM		},
+
+  /* X/Open CAE Spec. Issue 5 Version 2 Configurable System Variables */
+  { "FILESIZEBITS",		PATHCONF,	_PC_FILESIZEBITS	},
+
+  /* POSIX.1-2001 XSI Option Group Configurable System Variables */
+  { "ATEXIT_MAX",		SYSCONF,	_SC_ATEXIT_MAX		},
+
+  /* POSIX.1-2001 TSF Configurable System Variables */
+  { "GETGR_R_SIZE_MAX",		SYSCONF,	_SC_GETGR_R_SIZE_MAX	},
+  { "GETPW_R_SIZE_MAX",		SYSCONF,	_SC_GETPW_R_SIZE_MAX	},
+
+  /* Commonly provided extensions */
+  { "_NPROCESSORS_CONF",	SYSCONF,	_SC_NPROCESSORS_CONF	},
+  { "_NPROCESSORS_ONLN",	SYSCONF,	_SC_NPROCESSORS_ONLN	},
+
+  { NULL, CONSTANT, 0L }
+};
+
+static int a_flag = 0;		/* list all variables */
+
+static void usage(const char *p)
+{
+	(void)fprintf(stderr, "Usage: %s system_var\n\t%s -a\n"
+	    "\t%s path_var pathname\n\t%s -a pathname\n", p, p, p, p);
+	exit(EXIT_FAILURE);
+}
+
+static void print_longvar(const char *name, long value)
+{
+	if (a_flag)
+		(void)printf("%s = %ld\n", name, value);
+	else
+		(void)printf("%ld\n", value);
+}
+
+static void print_strvar(const char *name, const char *sval)
+{
+	if (a_flag)
+		(void)printf("%s = %s\n", name, sval);
+	else
+		(void)printf("%s\n", sval);
+}
+
+static void
+printvar(const struct conf_variable *cp, const char *pathname)
+{
+	size_t slen;
+	char *sval;
+	long val;
+
+	switch (cp->type) {
+	case CONSTANT:
+		print_longvar(cp->name, cp->value);
+		break;
+
+	case CONFSTR:
+		errno = 0;
+		slen = confstr((int)cp->value, NULL, 0);
+		if (slen == 0) {
+			if (errno != 0)
+out:			 	err(EXIT_FAILURE, "confstr(%ld)", cp->value);
+			else
+				print_strvar(cp->name, "undefined");
+		}
+
+		if ((sval = malloc(slen)) == NULL)
+			err(EXIT_FAILURE, "Can't allocate %zu bytes", slen);
+
+		errno = 0;
+		if (confstr((int)cp->value, sval, slen) == 0) {
+			if (errno != 0)
+				goto out;
+			else
+				print_strvar(cp->name, "undefined");
+		} else
+			print_strvar(cp->name, sval);
+
+		free(sval);
+		break;
+
+	case SYSCONF:
+		errno = 0;
+		if ((val = sysconf((int)cp->value)) == -1) {
+			if (errno != 0)
+				err(EXIT_FAILURE, "sysconf(%ld)", cp->value);
+			print_strvar(cp->name, "undefined");
+		} else
+			print_longvar(cp->name, val);
+		break;
+
+	case PATHCONF:
+		errno = 0;
+		if ((val = pathconf(pathname, (int)cp->value)) == -1) {
+			if (errno != 0) {
+				if (a_flag && errno == EINVAL) {
+					/* Just skip invalid variables */
+					return;
+				}
+				err(EXIT_FAILURE, "pathconf(%s, %ld)",
+				    pathname, cp->value);
+				/* NOTREACHED */
+			}
+
+			print_strvar(cp->name, "undefined");
+		} else
+			print_longvar(cp->name, val);
+		break;
+	}
+}
+
+int
+main(int argc, char **argv)
+{
+	int ch;
+	const char *progname = argv[0];
+	const struct conf_variable *cp;
+	const char *varname, *pathname;
+	int found;
+
+	(void)setlocale(LC_ALL, "");
+
+	while ((ch = getopt(argc, argv, "a")) != -1) {
+		switch (ch) {
+		case 'a':
+			a_flag = 1;
+			break;
+		case '?':
+		default:
+			usage(progname);
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (!a_flag) {
+		if (argc == 0)
+			usage(progname);
+		varname = argv[0];
+		argc--;
+		argv++;
+	} else
+		varname = NULL;
+
+	if (argc > 1)
+		usage(progname);
+	pathname = argv[0];	/* may be NULL */
+
+	found = 0;
+	for (cp = conf_table; cp->name != NULL; cp++) {
+		if (a_flag || strcmp(varname, cp->name) == 0) {
+			if ((cp->type == PATHCONF) == (pathname != NULL)) {
+				printvar(cp, pathname);
+				found = 1;
+			} else if (!a_flag)
+				errx(EXIT_FAILURE,
+				    "%s: invalid variable type", cp->name);
+		}
+	}
+
+	if (!a_flag && !found)
+		errx(EXIT_FAILURE, "%s: unknown variable", varname);
+
+	(void)fflush(stdout);
+	return ferror(stdout) ? EXIT_FAILURE : EXIT_SUCCESS;
+}