Release libbsd 0.10.0

Some systems such as Windows or musl-libc based ones do not have these
BSD extensions. In addition libbsd itself is making use of the warnx()
functions, so we better provide these interfaces in case they are
missing.

.gitlab-ci.yml

@@ -0,0 +1,9 @@
+image: debian:stretch
+
+test:
+  before_script:
+    - apt update -qq
+    - apt install -qq -y --no-install-recommends git gcc make autoconf automake libtool
+  script:
+    - ./autogen && ./configure
+    - make check

COPYING

@@ -74,16 +74,18 @@ License: BSD-4-clause-Christopher-G-Demetriou
 Files:
  include/bsd/err.h
  include/bsd/stdlib.h
+ include/bsd/sys/param.h
  include/bsd/unistd.h
  src/bsd_getopt.c
  src/err.c
  src/fgetln.c
  src/progname.c
 Copyright:
- Copyright © 2005, 2008-2012 Guillem Jover <guillem@hadrons.org>
+ Copyright © 2005, 2008-2012, 2019 Guillem Jover <guillem@hadrons.org>
  Copyright © 2005 Hector Garcia Alvarez
  Copyright © 2005 Aurelien Jarno
  Copyright © 2006 Robert Millan
+ Copyright © 2018 Facebook, Inc.
 License: BSD-3-clause
 
 Files:

TODO

@@ -1,3 +1,4 @@
+* Migrate portable functions from GNU/kFreeBSD's libfreebsd.
 * Add more functions used by ported packages (check openssh).
 * Add more unit tests.
 * Add missing man pages.
@@ -5,7 +6,6 @@
   - timeconv?
 * Add a README.import file.
 * Update man pages:
-  - Fix references to a.out(5) and inline needed struct definitions.
   - Document when each interface was added on every BSD, and libbsd.
 * Handle LFS properly. By default the library emits LFS objects, but might
   be used by non-LFS objects. We should either provide foo and foo64

configure.ac

@@ -12,8 +12,8 @@ m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])],
                             [AC_SUBST([AM_DEFAULT_VERBOSITY], [1])])
 
 LIBBSD_ABI_MAJOR=0
-LIBBSD_ABI_MINOR=9
-LIBBSD_ABI_PATCH=1
+LIBBSD_ABI_MINOR=10
+LIBBSD_ABI_PATCH=0
 
 LIBBSD_ABI="$LIBBSD_ABI_MAJOR:$LIBBSD_ABI_MINOR:$LIBBSD_ABI_PATCH"
 AC_SUBST([LIBBSD_ABI])
@@ -44,11 +44,16 @@ AC_SUBST([TESTU01_LIBS])
 AM_CONDITIONAL([HAVE_LIBTESTU01],
                [test "x$ac_cv_lib_testu01_unif01_CreateExternGenBits" = "xyes"])
 
+is_windows=no
 AS_CASE([$host_os],
   [*-gnu*], [
     # In old glibc versions (< 2.17) clock_gettime() is in librt.
     saved_LIBS="$LIBS"
-    AC_SEARCH_LIBS([clock_gettime], [rt], [CLOCK_GETTIME_LIBS="-lrt"])
+    AC_SEARCH_LIBS([clock_gettime], [rt], [
+      AS_IF([test "x$ac_cv_search_clock_gettime" != "xnone required"], [
+        CLOCK_GETTIME_LIBS="$ac_cv_search_clock_gettime"
+      ])
+    ])
     AC_SUBST([CLOCK_GETTIME_LIBS])
     LIBS="$saved_LIBS"
   ],
@@ -56,10 +61,14 @@ AS_CASE([$host_os],
     # Upstream refuses to define this, we will do it ourselves then.
     AC_DEFINE([__MUSL__], [1], [Define to 1 if we are building for musl])
   ],
+  [mingw*], [
+    is_windows=yes
+  ],
 )
+AM_CONDITIONAL([OS_WINDOWS], [test "x$is_windows" = "xyes"])
 
 # Checks for header files.
-AC_CHECK_HEADERS([sys/ndir.h sys/dir.h ndir.h dirent.h])
+AC_CHECK_HEADERS([sys/ndir.h sys/dir.h ndir.h dirent.h grp.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_INLINE
@@ -87,7 +96,7 @@ AC_CACHE_CHECK(
 [[
 static int rc = 1;
 static void init(int argc) { if (argc == 1) rc = 0; }
-void (*init_func)(int argc) __attribute__((section(".init_array"))) = init;
+void (*init_func)(int argc) __attribute__((__section__(".init_array"))) = init;
 int main() { return rc; }
 ]]
 		)],
@@ -141,6 +150,23 @@ AC_LINK_IFELSE(
 	 AC_MSG_RESULT([yes])],
 	[AC_MSG_RESULT([no])])
 
+AC_MSG_CHECKING([for __register_atfork])
+AC_LINK_IFELSE(
+	[AC_LANG_PROGRAM([[
+		#include <stddef.h>
+		extern void *__dso_handle;
+		extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);
+	]], [[
+		__register_atfork(NULL, NULL, NULL, __dso_handle);
+	]])],
+	[AC_DEFINE([HAVE___REGISTER_ATFORK], [1],
+	           [Define to 1 if you have __register_atfork])
+	 AC_MSG_RESULT([yes])],
+	[ARC4RANDOM_ATFORK_LIBS="-pthread"
+	 AC_SUBST([ARC4RANDOM_ATFORK_LIBS])
+	 AC_MSG_RESULT([no])
+	])
+
 AC_CHECK_FUNCS([clearenv dirfd fopencookie __fpurge \
                 getauxval getentropy getexecname getline \
                 pstat_getproc sysconf])

include/Makefile.am

@@ -4,6 +4,7 @@ nobase_include_HEADERS = \
 	bsd/sys/bitstring.h \
 	bsd/sys/cdefs.h \
 	bsd/sys/endian.h \
+	bsd/sys/param.h \
 	bsd/sys/poll.h \
 	bsd/sys/queue.h \
 	bsd/sys/time.h \

include/bsd/err.h

@@ -26,31 +26,56 @@
  */
 
 #ifdef LIBBSD_OVERLAY
+#include <sys/cdefs.h>
+#if __has_include_next(<err.h>)
 #include_next <err.h>
 #else
+#define LIBBSD_NEED_ERR_H_FUNCS
+#endif
+#else
+#include <bsd/sys/cdefs.h>
+#if __has_include(<err.h>)
 #include <err.h>
+#else
+#define LIBBSD_NEED_ERR_H_FUNCS
+#endif
 #endif
 
 #ifndef LIBBSD_ERR_H
 #define LIBBSD_ERR_H
 
-#ifdef LIBBSD_OVERLAY
-#include <sys/cdefs.h>
-#else
-#include <bsd/sys/cdefs.h>
-#endif
-
 #include <stdarg.h>
 
 __BEGIN_DECLS
-void warnc(int code, const char *format, ...)
-	__printflike(2, 3);
 void vwarnc(int code, const char *format, va_list ap)
 	__printflike(2, 0);
-void errc(int status, int code, const char *format, ...)
-	__printflike(3, 4);
+void warnc(int code, const char *format, ...)
+	__printflike(2, 3);
+
 void verrc(int status, int code, const char *format, va_list ap)
-	__printflike(3, 0);
+	__printflike(3, 0) __dead2;
+void errc(int status, int code, const char *format, ...)
+	__printflike(3, 4) __dead2;
+
+#ifdef LIBBSD_NEED_ERR_H_FUNCS
+void vwarn(const char *format, va_list ap)
+	__printflike(1, 0);
+void vwarnx(const char *format, va_list ap)
+	__printflike(1, 0);
+void warn(const char *format, ...)
+	__printflike(1, 2);
+void warnx(const char *format, ...)
+	__printflike(1, 2);
+
+void verr(int status, const char *format, va_list ap)
+	__printflike(2, 0) __dead2;
+void verrx(int status, const char *format, va_list ap)
+	__printflike(2, 0) __dead2;
+void err(int status, const char *format, ...)
+	__printflike(2, 3) __dead2;
+void errx(int status, const char *format, ...)
+	__printflike(2, 3) __dead2;
+#endif
 __END_DECLS
 
 #endif

include/bsd/getopt.h

@@ -25,9 +25,15 @@
  */
 
 #ifdef LIBBSD_OVERLAY
+#include <sys/cdefs.h>
+#if __has_include_next(<getopt.h>)
 #include_next <getopt.h>
+#endif
 #include <unistd.h>
 #else
+#include <bsd/sys/cdefs.h>
+#if __has_include(<getopt.h>)
 #include <getopt.h>
+#endif
 #include <bsd/unistd.h>
 #endif

include/bsd/nlist.h

@@ -36,9 +36,12 @@
 struct nlist {
 	union {
 		char *n_name;
-		struct n_list *n_next;
-		long n_strx;
-	} n_un;
+		union {
+			char *n_name;
+			struct n_list *n_next;
+			long n_strx;
+		} n_un;
+	};
 	unsigned char n_type;
 	char n_other;
 	short n_desc;

include/bsd/sys/cdefs.h

@@ -30,6 +30,13 @@
 #ifndef __has_include_next
 #define __has_include_next(x) 1
 #endif
+#ifndef __has_attribute
+#define __has_attribute(x) 0
+#endif
+/* Clang expands this to 1 if an identifier is *not* reserved. */
+#ifndef __is_identifier
+#define __is_identifier(x) 1
+#endif
 
 #ifdef LIBBSD_OVERLAY
 /*
@@ -85,22 +92,22 @@
 #define LIBBSD_GCC_VERSION 0
 #endif
 
-#if LIBBSD_GCC_VERSION >= 0x0405
-#define LIBBSD_DEPRECATED(x) __attribute__((deprecated(x)))
+#if LIBBSD_GCC_VERSION >= 0x0405 || __has_attribute(__deprecated__)
+#define LIBBSD_DEPRECATED(x) __attribute__((__deprecated__(x)))
 #elif LIBBSD_GCC_VERSION >= 0x0301
-#define LIBBSD_DEPRECATED(x) __attribute__((deprecated))
+#define LIBBSD_DEPRECATED(x) __attribute__((__deprecated__))
 #else
 #define LIBBSD_DEPRECATED(x)
 #endif
 
-#if LIBBSD_GCC_VERSION >= 0x0200
+#if LIBBSD_GCC_VERSION >= 0x0200 || defined(__clang__)
 #define LIBBSD_REDIRECT(name, proto, alias) name proto __asm__(LIBBSD_ASMNAME(#alias))
 #endif
 #define LIBBSD_ASMNAME(cname) LIBBSD_ASMNAME_PREFIX(__USER_LABEL_PREFIX__, cname)
 #define LIBBSD_ASMNAME_PREFIX(prefix, cname) LIBBSD_STRING(prefix) cname
 
 #ifndef __dead2
-# if LIBBSD_GCC_VERSION >= 0x0207
+# if LIBBSD_GCC_VERSION >= 0x0207 || __has_attribute(__noreturn__)
 #  define __dead2 __attribute__((__noreturn__))
 # else
 #  define __dead2
@@ -108,7 +115,7 @@
 #endif
 
 #ifndef __pure2
-# if LIBBSD_GCC_VERSION >= 0x0207
+# if LIBBSD_GCC_VERSION >= 0x0207 || __has_attribute(__const__)
 #  define __pure2 __attribute__((__const__))
 # else
 #  define __pure2
@@ -116,7 +123,7 @@
 #endif
 
 #ifndef __packed
-# if LIBBSD_GCC_VERSION >= 0x0207
+# if LIBBSD_GCC_VERSION >= 0x0207 || __has_attribute(__packed__)
 #  define __packed __attribute__((__packed__))
 # else
 #  define __packed
@@ -124,7 +131,7 @@
 #endif
 
 #ifndef __aligned
-# if LIBBSD_GCC_VERSION >= 0x0207
+# if LIBBSD_GCC_VERSION >= 0x0207 || __has_attribute(__aligned__)
 #  define __aligned(x) __attribute__((__aligned__(x)))
 # else
 #  define __aligned(x)
@@ -137,7 +144,7 @@
 #if 0
 #ifndef __unused
 # if LIBBSD_GCC_VERSION >= 0x0300
-#  define __unused __attribute__((unused))
+#  define __unused __attribute__((__unused__))
 # else
 #  define __unused
 # endif
@@ -145,15 +152,15 @@
 #endif
 
 #ifndef __printflike
-# if LIBBSD_GCC_VERSION >= 0x0300
-#  define __printflike(x, y) __attribute((format(printf, (x), (y))))
+# if LIBBSD_GCC_VERSION >= 0x0300 || __has_attribute(__format__)
+#  define __printflike(x, y) __attribute((__format__(__printf__, (x), (y))))
 # else
 #  define __printflike(x, y)
 # endif
 #endif
 
 #ifndef __nonnull
-# if LIBBSD_GCC_VERSION >= 0x0302
+# if LIBBSD_GCC_VERSION >= 0x0302 || __has_attribute(__nonnull__)
 #  define __nonnull(x) __attribute__((__nonnull__(x)))
 # else
 #  define __nonnull(x)
@@ -175,7 +182,7 @@
  * require it.
  */
 #ifndef __offsetof
-# if LIBBSD_GCC_VERSION >= 0x0401
+# if LIBBSD_GCC_VERSION >= 0x0401 || !__is_identifier(__builtin_offsetof)
 #  define __offsetof(type, field)	__builtin_offsetof(type, field)
 # else
 #  ifndef __cplusplus
@@ -200,9 +207,9 @@
  * compatible with member m.
  */
 #ifndef __containerof
-# if LIBBSD_GCC_VERSION >= 0x0301
+# if LIBBSD_GCC_VERSION >= 0x0301 || !__is_identifier(__typeof__)
 #  define __containerof(x, s, m) ({ \
-	const volatile __typeof(((s *)0)->m) *__x = (x); \
+	const volatile __typeof__(((s *)0)->m) *__x = (x); \
 	__DEQUALIFY(s *, (const volatile char *)__x - __offsetof(s, m)); \
 })
 # else

include/bsd/sys/endian.h

@@ -27,10 +27,16 @@
  */
 
 #ifdef LIBBSD_OVERLAY
+#include <sys/cdefs.h>
+#if __has_include_next(<endian.h>)
 #include_next <endian.h>
+#endif
 #else
+#include <bsd/sys/cdefs.h>
+#if __has_include(<endian.h>)
 #include <endian.h>
 #endif
+#endif
 
 #ifndef LIBBSD_SYS_ENDIAN_H
 #define LIBBSD_SYS_ENDIAN_H

include/bsd/sys/param.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright © 2018 Facebook, Inc.
+ *
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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.
+ */
+
+#ifdef LIBBSD_OVERLAY
+#include <sys/cdefs.h>
+#if __has_include_next(<sys/param.h>)
+#include_next <sys/param.h>
+#endif
+#else
+#include <bsd/sys/cdefs.h>
+#if __has_include(<sys/param.h>)
+#include <sys/param.h>
+#endif
+#endif
+
+#ifndef LIBBSD_SYS_PARAM_H
+#define LIBBSD_SYS_PARAM_H
+
+#ifndef MIN
+#define MIN(x, y) (((x) < (y)) ? (x) : (y))
+#endif
+#ifndef MAX
+#define MAX(x, y) (((x) > (y)) ? (x) : (y))
+#endif
+
+#endif

include/bsd/sys/time.h

@@ -33,10 +33,16 @@
  */
 
 #ifdef LIBBSD_OVERLAY
+#include <sys/cdefs.h>
+#if __has_include_next(<sys/time.h>)
 #include_next <sys/time.h>
+#endif
 #else
+#include <bsd/sys/cdefs.h>
+#if __has_include(<sys/time.h>)
 #include <sys/time.h>
 #endif
+#endif
 
 #ifndef LIBBSD_SYS_TIME_H
 #define LIBBSD_SYS_TIME_H

include/bsd/unistd.h

@@ -26,22 +26,23 @@
  */
 
 #ifdef LIBBSD_OVERLAY
+#include <sys/cdefs.h>
+#if __has_include_next(<unistd.h>)
 #include_next <unistd.h>
+#endif
 #else
+#include <bsd/sys/cdefs.h>
+#if __has_include(<unistd.h>)
 #include <unistd.h>
 #endif
+#endif
 
 #ifndef LIBBSD_UNISTD_H
 #define LIBBSD_UNISTD_H
 
-#ifdef LIBBSD_OVERLAY
-#include <sys/cdefs.h>
-#else
-#include <bsd/sys/cdefs.h>
-#endif
 #include <sys/stat.h>
 
-#ifndef S_ISTXT
+#if !defined(S_ISTXT) && defined(S_ISVTX)
 #define S_ISTXT S_ISVTX
 #endif
 

man/arc4random.3bsd

@@ -42,6 +42,7 @@
 .Nd arc4 random number generator
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdlib.h

man/closefrom.3bsd

@@ -33,6 +33,7 @@
 .Nd delete open file descriptors
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In unistd.h

man/errc.3bsd

@@ -38,6 +38,7 @@
 .Nd formatted error messages
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In err.h
@@ -144,6 +145,7 @@ if ((fd = open(block_device, O_RDONLY, 0)) == -1)
 .Xr printf 3 ,
 .Xr strerror 3
 .Sh HISTORY
+.ds doc-operating-system-NetBSD-7.0 7.0
 The functions
 .Fn errc ,
 .Fn verrc ,

man/expand_number.3bsd

@@ -33,6 +33,7 @@
 .Nd format a number from human readable form
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In libutil.h

man/explicit_bzero.3bsd

@@ -37,6 +37,7 @@
 .Nd write zeroes to a byte string
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In string.h

man/fgetln.3bsd

@@ -36,6 +36,7 @@
 .Nd get a line from a stream
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdio.h

man/fgetwln.3bsd

@@ -36,6 +36,7 @@
 .Nd get a line of wide characters from a stream
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdio.h

man/flopen.3bsd

@@ -34,6 +34,7 @@
 .Nd "Reliably open and lock a file"
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In sys/fcntl.h

man/fmtcheck.3bsd

@@ -34,6 +34,7 @@
 .Nd sanitizes user-supplied printf(3)-style format string
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdio.h

man/fparseln.3bsd

@@ -30,6 +30,7 @@
 .Nd return the next logical line from a stream
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdio.h

man/fpurge.3bsd

@@ -39,6 +39,7 @@
 .Nd flush a stream
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdio.h

man/funopen.3bsd

@@ -40,6 +40,7 @@
 .Nd open a stream
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdio.h

man/getbsize.3bsd

@@ -36,6 +36,7 @@
 .Nd get preferred block size
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdlib.h

man/getpeereid.3bsd

@@ -33,6 +33,7 @@
 .Nd get the effective credentials of a UNIX-domain peer
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In sys/types.h

man/getprogname.3bsd

@@ -40,6 +40,7 @@
 .Nd get or set the program name
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdlib.h

man/heapsort.3bsd

@@ -40,6 +40,7 @@
 .Nd sort functions
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdlib.h

man/humanize_number.3bsd

@@ -36,6 +36,7 @@
 .Nd format a number into a human readable form and viceversa
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdlib.h

man/libbsd.7

@@ -1,6 +1,6 @@
 .\" libbsd man page
 .\"
-.\" Copyright © 2017-2018 Gullem Jover <guillem@hadrons.org>
+.\" Copyright © 2017-2018 Guillem Jover <guillem@hadrons.org>
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
@@ -24,7 +24,7 @@
 .\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 .\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd May 21 2018
+.Dd May 21, 2018
 .Dt LIBBSD 7
 .Os
 .Sh NAME
@@ -33,7 +33,7 @@
 .Sh DESCRIPTION
 The
 .Nm libbsd
-library provides a set if compatibility macros and functions commonly found
+library provides a set of compatibility macros and functions commonly found
 on BSD-based systems.
 Its purpose is to make those available on non-BSD based systems to ease
 portability.
@@ -76,7 +76,7 @@ The package also provides a
 .Pa bsd-ctor
 static library that can be used to inject automatic constructors into a
 program so that the
-.Fn setproctitle
+.Fn setproctitle_init 3
 function gets invoked automatically at startup time.
 This can be done with the
 .Xr pkg-config 3
@@ -134,7 +134,7 @@ or non-buggy way; or because there are better more portable replacements now.
 .Pp
 This is the list of currently deprecated macros and functions:
 .Bl -tag -width 4m
-.It Fn fgetln
+.It Fn fgetln 3
 Unportable, requires assistance from the stdio layer.
 An implementation has to choose between leaking buffers or being reentrant
 for a limited amount of streams (this implementation chose the latter with
@@ -143,7 +143,7 @@ Use
 .Fn getline 3
 instead, which is available in many systems and required by
 .St -p1003.1-2008 .
-.It Fn fgetwln
+.It Fn fgetwln 3
 Unportable, requires assistance from the stdio layer.
 An implementation has to choose between leaking buffers or being reentrant
 for a limited amount of streams (this implementation chose the latter with
@@ -154,10 +154,10 @@ instead, which is available in many systems and required by
 .St -isoC-99
 and
 .St -p1003.1-2001 .
-.It Fn funopen
+.It Fn funopen 3
 Unportable, requires assistance from the stdio layer or some hook framework.
 On GNU systems the
-.Fn fopencookie
+.Fn fopencookie 3
 function can be used.
 Otherwise the code needs to be prepared for neither of these functions being
 available.
@@ -171,23 +171,23 @@ are present in all major
 for example.
 .Pp
 .Bl -tag -width 4m -compact
-.It Fn MD5Init
-.It Fn MD5Update
-.It Fn MD5Pad
-.It Fn MD5Final
-.It Fn MD5Transform
-.It Fn MD5End
-.It Fn MD5File
-.It Fn MD5FileChunk
-.It Fn MD5Data
+.It Fn MD5Init 3
+.It Fn MD5Update 3
+.It Fn MD5Pad 3
+.It Fn MD5Final 3
+.It Fn MD5Transform 3
+.It Fn MD5End 3
+.It Fn MD5File 3
+.It Fn MD5FileChunk 3
+.It Fn MD5Data 3
 The set of MD5 digest functions are now provided by the
 .Nm libmd
 companion library, so it is advised to use that instead.
-.It Fn explicit_bzero
+.It Fn explicit_bzero 3
 This function is provided by
 .Nm glibc
 2.25.
-.It Fn reallocarray
+.It Fn reallocarray 3
 This function is provided by
 .Nm glibc
 2.26.

man/mdX.3bsd

@@ -25,6 +25,7 @@
 .Nd calculate the RSA Data Security, Inc., ``MDX'' message digest
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In sys/types.h

man/nlist.3bsd

@@ -36,6 +36,7 @@
 .Nd retrieve symbol table name list from an executable file
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In nlist.h
@@ -50,7 +51,7 @@ The
 function
 retrieves name list entries from the symbol table of an
 executable file (see
-.Xr a.out 5 ) .
+.Xr elf 5 ) .
 The argument
 .Fa \&nl
 is set to reference the
@@ -71,9 +72,12 @@ The last entry in the list is always
 The number of invalid entries is returned if successful; otherwise,
 if the file
 .Fa filename
-does not exist or is not executable, the returned value is \-1.
+does not exist or is not executable,
+or the nl pointer is
+.Dv NULL ,
+the returned value is \-1.
 .Sh SEE ALSO
-.Xr a.out 5
+.Xr elf 5
 .Sh HISTORY
 A
 .Fn nlist

man/pidfile.3bsd

@@ -36,6 +36,7 @@
 .Nd "library for PID files handling"
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In libutil.h

man/radixsort.3bsd

@@ -38,6 +38,7 @@
 .Nd radix sort
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In limits.h

man/readpassphrase.3bsd

@@ -26,6 +26,7 @@
 .Nd get a passphrase from the user
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In readpassphrase.h

man/reallocarray.3bsd

@@ -40,6 +40,7 @@
 .Nd memory allocation and deallocation
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdlib.h

man/reallocf.3bsd

@@ -40,6 +40,7 @@
 .Nd general purpose memory allocation functions
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stdlib.h

man/setmode.3bsd

@@ -39,6 +39,7 @@
 .Nd modify mode bits
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In unistd.h

man/setproctitle.3bsd

@@ -28,6 +28,7 @@
 .Nd set process title
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In sys/types.h
@@ -118,7 +119,7 @@ similar functions.
 .Pp
 The
 .Fn setproctitle_init
-function is a libbsd extension not present on the BSDs, avoid using it
+function is a libbsd extension not present on the BSDs; avoid using it
 in portable code.
 .Sh AUTHORS
 .An -nosplit

man/stringlist.3bsd

@@ -39,6 +39,7 @@
 .Nd stringlist manipulation functions
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In stringlist.h

man/strlcpy.3bsd

@@ -23,6 +23,7 @@
 .Nd size-bounded string copying and concatenation
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In string.h

man/strmode.3bsd

@@ -36,6 +36,7 @@
 .Nd convert inode status information into a symbolic string
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In string.h

man/strnstr.3bsd

@@ -41,6 +41,7 @@
 .Nd locate a substring in a string
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In string.h

man/strtoi.3bsd

@@ -44,6 +44,7 @@
 .Nd convert string value to an intmax_t integer
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In inttypes.h
@@ -225,10 +226,11 @@ function is a
 .Nx
 extension.
 .Sh HISTORY
+.ds doc-operating-system-NetBSD-7.0 7.0
 The
 .Fn strtoi
 function first appeared in
-.Nx 7 .
+.Nx 7.0 .
 .Ox
 introduced the
 .Fn strtonum 3bsd

man/strtonum.3bsd

@@ -23,6 +23,7 @@
 .Nd reliably convert string value to an integer
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In limits.h
@@ -144,13 +145,14 @@ is an
 .Ox
 extension.
 .Sh HISTORY
+.ds doc-operating-system-NetBSD-8.0 8.0
 The
 .Fn strtonum
 function first appeared in
 .Ox 3.6 .
 .Fn strtonum
 was redesigned in
-.Nx 8
+.Nx 8.0
 as
 .Fn strtoi 3bsd
 and

man/strtou.3bsd

@@ -44,6 +44,7 @@
 .Nd convert a string to an uintmax_t integer
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In inttypes.h
@@ -219,6 +220,7 @@ the range given was invalid, i.e.
 .Xr strtoull 3 ,
 .Xr strtoumax 3
 .Sh STANDARDS
+.ds doc-operating-system-NetBSD-7.0 7.0
 The
 .Fn strtou
 function is a
@@ -228,7 +230,7 @@ extension.
 The
 .Fn strtou
 function first appeared in
-.Nx 7 .
+.Nx 7.0 .
 .Ox
 introduced the
 .Fn strtonum 3bsd

man/timeradd.3bsd

@@ -47,6 +47,7 @@
 .Nd operations on time structure
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In sys/time.h

man/timeval.3bsd

@@ -36,6 +36,7 @@
 .Nd time structures
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In sys/time.h

man/unvis.3bsd

@@ -41,6 +41,7 @@
 .Nd decode a visual representation of characters
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In vis.h

man/vis.3bsd

@@ -51,6 +51,7 @@
 .Nd visually encode characters
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In vis.h

man/wcslcpy.3bsd

@@ -44,6 +44,7 @@
 .Nd wide character string manipulation operations
 .Sh LIBRARY
 .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
+.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
 .Lb libbsd
 .Sh SYNOPSIS
 .In wchar.h

src/Makefile.am

@@ -7,6 +7,13 @@ AM_CPPFLAGS = \
 	-DLIBBSD_OVERLAY -DLIBBSD_DISABLE_DEPRECATED \
 	-D__REENTRANT
 
+if OS_WINDOWS
+AM_CPPFLAGS += \
+	-D_CRT_SECURE_NO_WARNINGS \
+	-D_CRT_NONSTDC_NO_WARNINGS \
+	$(nil)
+endif
+
 libbsd_la_included_sources = \
 	hash/helper.c \
 	getentropy_aix.c \
@@ -54,7 +61,9 @@ libbsd_la_DEPENDENCIES = \
 	$(libbsd_la_included_sources) \
 	libbsd.map
 libbsd_la_LIBADD = \
-	$(CLOCK_GETTIME_LIBS)
+	$(CLOCK_GETTIME_LIBS) \
+	$(ARC4RANDOM_ATFORK_LIBS) \
+	$(nil)
 libbsd_la_LDFLAGS = \
 	-Wl,--version-script=$(srcdir)/libbsd.map \
 	-version-number $(LIBBSD_ABI)

src/arc4random.c

@@ -39,11 +39,11 @@
 
 #define minimum(a, b) ((a) < (b) ? (a) : (b))
 
-#if defined(__GNUC__) || defined(_MSC_VER)
+#if defined(__GNUC__) || defined(__clang__) || defined(_MSC_VER)
 #define inline __inline
-#else				/* __GNUC__ || _MSC_VER */
+#else				/* __GNUC__ || __clang__ || _MSC_VER */
 #define inline
-#endif				/* !__GNUC__ && !_MSC_VER */
+#endif				/* !__GNUC__ && !__clang__ && !_MSC_VER */
 
 #define KEYSZ	32
 #define IVSZ	8

src/arc4random_linux.h

@@ -32,7 +32,7 @@ static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;
 #define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
 #define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
 
-#ifdef __GLIBC__
+#ifdef HAVE___REGISTER_ATFORK
 extern void *__dso_handle;
 extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);
 #define _ARC4_ATFORK(f) __register_atfork(NULL, NULL, (f), __dso_handle)

src/arc4random_unix.h

@@ -32,7 +32,7 @@ static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;
 #define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
 #define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
 
-#ifdef __GLIBC__
+#ifdef HAVE___REGISTER_ATFORK
 extern void *__dso_handle;
 extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);
 #define _ARC4_ATFORK(f) __register_atfork(NULL, NULL, (f), __dso_handle)

src/err.c

@@ -1,6 +1,6 @@
 /*
  * Copyright © 2006 Robert Millan
- * Copyright © 2011 Guillem Jover <guillem@hadrons.org>
+ * Copyright © 2011, 2019 Guillem Jover <guillem@hadrons.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -26,8 +26,24 @@
  */
 
 #include <err.h>
+#ifdef LIBBSD_NEED_ERR_H_FUNCS
 #include <errno.h>
+#endif
+#include <string.h>
 #include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+void
+vwarnc(int code, const char *format, va_list ap)
+{
+	fprintf(stderr, "%s: ", getprogname());
+	if (format) {
+		vfprintf(stderr, format, ap);
+		fprintf(stderr, ": ");
+	}
+	fprintf(stderr, "%s\n", strerror(code));
+}
 
 void
 warnc(int code, const char *format, ...)
@@ -40,13 +56,15 @@ warnc(int code, const char *format, ...)
 }
 
 void
-vwarnc(int code, const char *format, va_list ap)
+verrc(int status, int code, const char *format, va_list ap)
 {
-	int tmp = errno;
-
-	errno = code;
-	vwarn(format, ap);
-	errno = tmp;
+	fprintf(stderr, "%s: ", getprogname());
+	if (format) {
+		vfprintf(stderr, format, ap);
+		fprintf(stderr, ": ");
+	}
+	fprintf(stderr, "%s\n", strerror(code));
+	exit(status);
 }
 
 void
@@ -59,9 +77,75 @@ errc(int status, int code, const char *format, ...)
 	va_end(ap);
 }
 
+#ifdef LIBBSD_NEED_ERR_H_FUNCS
 void
-verrc(int status, int code, const char *format, va_list ap)
+vwarn(const char *format, va_list ap)
 {
-	errno = code;
-	verr(status, format, ap);
+	vwarnc(errno, format, ap);
 }
+
+void
+warn(const char *format, ...)
+{
+	va_list ap;
+
+	va_start(ap, format);
+	vwarnc(errno, format, ap);
+	va_end(ap);
+}
+
+void
+vwarnx(const char *format, va_list ap)
+{
+	fprintf(stderr, "%s: ", getprogname());
+	if (format)
+		vfprintf(stderr, format, ap);
+	fprintf(stderr, "\n");
+}
+
+void
+warnx(const char *format, ...)
+{
+	va_list ap;
+
+	va_start(ap, format);
+	vwarnx(format, ap);
+	va_end(ap);
+}
+
+void
+verr(int status, const char *format, va_list ap)
+{
+	verrc(status, errno, format, ap);
+}
+
+void
+err(int status, const char *format, ...)
+{
+	va_list ap;
+
+	va_start(ap, format);
+	verrc(status, errno, format, ap);
+	va_end(ap);
+}
+
+void
+verrx(int eval, const char *format, va_list ap)
+{
+	fprintf(stderr, "%s: ", getprogname());
+	if (format)
+		vfprintf(stderr, format, ap);
+	fprintf(stderr, "\n");
+	exit(eval);
+}
+
+void
+errx(int eval, const char *format, ...)
+{
+	va_list ap;
+
+	va_start(ap, format);
+	verrx(eval, format, ap);
+	va_end(ap);
+}
+#endif

src/explicit_bzero.c

@@ -6,7 +6,7 @@
 
 #include <string.h>
 
-__attribute__((weak)) void
+__attribute__((__weak__)) void
 __explicit_bzero_hook(void *buf, size_t len)
 {
 }

src/flopen.c

@@ -32,6 +32,7 @@
 #include <sys/stat.h>
 
 #include <errno.h>
+#include <fcntl.h>
 #include <stdarg.h>
 #include <unistd.h>
 

src/hash/helper.c

@@ -19,6 +19,9 @@
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
+#ifdef _WIN32
+#include <io.h>
+#endif
 
 #include <hashinc>
 

src/inet_net_pton.c

@@ -19,9 +19,14 @@
 
 #include <sys/cdefs.h>
 #include <sys/types.h>
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <WinSock2.h>
+#else
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#endif
 
 #include <assert.h>
 #include <ctype.h>

src/libbsd.map

@@ -168,3 +168,16 @@ LIBBSD_0.9.1 {
     strnvis_netbsd;
     strnunvis_netbsd;
 } LIBBSD_0.9;
+
+LIBBSD_0.10.0 {
+    /* These BSD extensions are available on GNU systems, but not on other
+     * systems such as Windows or musl libc based ones. */
+    vwarn;
+    vwarnx;
+    warn;
+    warnx;
+    verr;
+    verrx;
+    err;
+    errx;
+} LIBBSD_0.9.1;

src/local-elf.h

@@ -37,6 +37,8 @@
 
 #define ELF_TARG_VER	EV_CURRENT
 
+/* The following entries are sorted alphabetically. */
+
 #if defined(__alpha__)
 
 #define ELF_TARG_MACH	EM_ALPHA
@@ -53,6 +55,12 @@
 #endif
 #define ELF_TARG_DATA	ELFDATA2LSB
 
+#elif defined (__arc__)
+
+#define ELF_TARG_MACH   EM_ARC
+#define ELF_TARG_CLASS  ELFCLASS32
+#define ELF_TARG_DATA   ELFDATA2LSB
+
 #elif defined(__arm__)
 
 #define ELF_TARG_MACH	EM_ARM
@@ -66,7 +74,11 @@
 #elif defined(__aarch64__)
 
 #define ELF_TARG_MACH	EM_AARCH64
+#if defined(__ILP32__)
+#define ELF_TARG_CLASS	ELFCLASS32
+#else
 #define ELF_TARG_CLASS	ELFCLASS64
+#endif
 #if defined(__AARCH64EB__)
 #define ELF_TARG_DATA	ELFDATA2MSB
 #else
@@ -88,6 +100,12 @@
 #error Unknown AVR32 endianness
 #endif
 
+#elif defined(__e2k__)
+
+#define ELF_TARG_MACH	EM_MCST_ELBRUS
+#define ELF_TARG_CLASS	ELFCLASS64
+#define ELF_TARG_DATA	ELFDATA2LSB
+
 #elif defined(__hppa__)
 
 #define ELF_TARG_MACH	EM_PARISC

src/local-link.h

@@ -29,5 +29,19 @@
 
 #define libbsd_link_warning(symbol, msg) \
 	static const char libbsd_emit_link_warning_##symbol[] \
-		__attribute__((used,section(".gnu.warning." #symbol))) = msg;
+		__attribute__((__used__,__section__(".gnu.warning." #symbol))) = msg;
+
+#ifdef __ELF__
+#define libbsd_symver_default(alias, symbol, version) \
+	__asm__(".symver " #symbol "," #alias "@@" #version)
+
+#define libbsd_symver_variant(alias, symbol, version) \
+	__asm__(".symver " #symbol "," #alias "@" #version)
+#else
+#define libbsd_symver_default(alias, symbol, version) \
+	extern __typeof(symbol) alias __attribute__((__alias__(#symbol)))
+
+#define libbsd_symver_variant(alias, symbol, version)
+#endif
+
 #endif

src/nlist.c

@@ -141,11 +141,17 @@ __fdnlist(int fd, struct nlist *list)
 	    fstat(fd, &st) < 0)
 		return (-1);
 
+	if (ehdr.e_shnum == 0 ||
+	    ehdr.e_shentsize != sizeof(Elf_Shdr)) {
+		errno = ERANGE;
+		return (-1);
+	}
+
 	/* calculate section header table size */
 	shdr_size = ehdr.e_shentsize * ehdr.e_shnum;
 
 	/* Make sure it's not too big to mmap */
-	if (shdr_size > SIZE_T_MAX) {
+	if (shdr_size > SIZE_T_MAX || shdr_size > st.st_size) {
 		errno = EFBIG;
 		return (-1);
 	}
@@ -155,7 +161,7 @@ __fdnlist(int fd, struct nlist *list)
 		return (-1);
 
 	/* Load section header table. */
-	if (pread(fd, shdr, (size_t)shdr_size, (off_t)ehdr.e_shoff) < 0)
+	if (pread(fd, shdr, (size_t)shdr_size, (off_t)ehdr.e_shoff) != (ssize_t)shdr_size)
 		goto done;
 
 	/*
@@ -166,6 +172,9 @@ __fdnlist(int fd, struct nlist *list)
 	 */
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		if (shdr[i].sh_type == SHT_SYMTAB) {
+			if (shdr[i].sh_link >= ehdr.e_shnum)
+				goto done;
+
 			symoff = shdr[i].sh_offset;
 			symsize = shdr[i].sh_size;
 			symstroff = shdr[shdr[i].sh_link].sh_offset;
@@ -175,7 +184,7 @@ __fdnlist(int fd, struct nlist *list)
 	}
 
 	/* Check for files too large to mmap. */
-	if (symstrsize > SIZE_T_MAX) {
+	if (symstrsize > SIZE_T_MAX || symstrsize > st.st_size) {
 		errno = EFBIG;
 		goto done;
 	}
@@ -189,7 +198,7 @@ __fdnlist(int fd, struct nlist *list)
 	if (strtab == NULL)
 		goto done;
 
-	if (pread(fd, strtab, (size_t)symstrsize, (off_t)symstroff) < 0)
+	if (pread(fd, strtab, (size_t)symstrsize, (off_t)symstroff) != (ssize_t)symstrsize)
 		goto done;
 
 	/*
@@ -227,16 +236,18 @@ __fdnlist(int fd, struct nlist *list)
 		symsize -= cc;
 		for (s = sbuf; cc > 0 && nent > 0; ++s, cc -= sizeof(*s)) {
 			char *name;
+			Elf_Word size;
 			struct nlist *p;
 
 			name = strtab + s->st_name;
 			if (name[0] == '\0')
 				continue;
+			size = symstrsize - s->st_name;
 
 			for (p = list; !ISLAST(p); p++) {
 				if ((p->n_un.n_name[0] == '_' &&
-				    strcmp(name, p->n_un.n_name+1) == 0)
-				    || strcmp(name, p->n_un.n_name) == 0) {
+				     strncmp(name, p->n_un.n_name+1, size) == 0) ||
+				    strncmp(name, p->n_un.n_name, size) == 0) {
 					elf_sym_to_nlist(p, s, shdr,
 					    ehdr.e_shnum);
 					if (--nent <= 0)
@@ -258,6 +269,10 @@ nlist(const char *name, struct nlist *list)
 {
 	int fd, n;
 
+	if (list == NULL) {
+		errno = EINVAL;
+		return (-1);
+	}
 	fd = open(name, O_RDONLY, 0);
 	if (fd < 0)
 		return (-1);

src/setproctitle.c

@@ -31,6 +31,7 @@
 #include <err.h>
 #include <unistd.h>
 #include <string.h>
+#include "local-link.h"
 
 static struct {
 	/* Original value. */
@@ -280,16 +281,19 @@ setproctitle_impl(const char *fmt, ...)
 		*++nul = '\0';
 	}
 }
-__asm__(".symver setproctitle_impl,setproctitle@@LIBBSD_0.5");
+libbsd_symver_default(setproctitle, setproctitle_impl, LIBBSD_0.5);
 
 /* The original function introduced in 0.2 was a stub, it only got implemented
  * in 0.5, make the implementation available in the old version as an alias
  * for code linking against that version, and change the default to use the
  * new version, so that new code depends on the implemented version. */
 #ifdef HAVE_TYPEOF
-extern typeof(setproctitle_impl) setproctitle_stub __attribute__((alias("setproctitle_impl")));
+extern __typeof__(setproctitle_impl)
+setproctitle_stub
+	__attribute__((__alias__("setproctitle_impl")));
 #else
-void setproctitle_stub(const char *fmt, ...)
-	__attribute__((alias("setproctitle_impl")));
+void
+setproctitle_stub(const char *fmt, ...)
+	__attribute__((__alias__("setproctitle_impl")));
 #endif
-__asm__(".symver setproctitle_stub,setproctitle@LIBBSD_0.2");
+libbsd_symver_variant(setproctitle, setproctitle_stub, LIBBSD_0.2);

src/setproctitle_ctor.c

@@ -49,4 +49,4 @@
  * move them from .ctors to .init_array.
  */
 void (*libbsd_init_func)(int argc, char *argv[], char *envp[])
-	__attribute__((section(".init_array"))) = setproctitle_init;
+	__attribute__((__section__(".init_array"))) = setproctitle_init;

src/unvis.c

@@ -42,6 +42,8 @@
 #include <vis.h>
 #pragma GCC diagnostic pop
 
+#include "local-link.h"
+
 #ifdef __weak_alias
 __weak_alias(strnunvisx,_strnunvisx)
 #endif
@@ -68,7 +70,8 @@ __weak_alias(strnunvisx,_strnunvisx)
 #define	S_NUMBER	14	/* collecting number */
 #define	S_STRING	15	/* collecting string */
 
-#define	isoctal(c)	(((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
+#define	isoctal(c) \
+	(((unsigned char)(c)) >= '0' && ((unsigned char)(c)) <= '7')
 #define	xtod(c)		(isdigit(c) ? (c - '0') : ((tolower(c) - 'a') + 10))
 #define	XTOD(c)		(isdigit(c) ? (c - '0') : ((c - 'A') + 10))
 
@@ -565,11 +568,11 @@ strnunvis_openbsd(char *dst, const char *src, size_t dlen)
 {
 	return strnunvisx(dst, dlen, src, 0);
 }
-__asm__(".symver strnunvis_openbsd,strnunvis@@LIBBSD_0.2");
+libbsd_symver_default(strnunvis, strnunvis_openbsd, LIBBSD_0.2);
 
 int
 strnunvis_netbsd(char *dst, size_t dlen, const char *src)
 {
 	return strnunvisx(dst, dlen, src, 0);
 }
-__asm__(".symver strnunvis_netbsd,strnunvis@LIBBSD_0.9.1");
+libbsd_symver_variant(strnunvis, strnunvis_netbsd, LIBBSD_0.9.1);

src/vis.c

@@ -57,7 +57,6 @@
 
 #include <sys/cdefs.h>
 #include <sys/types.h>
-#include <sys/param.h>
 
 #include <assert.h>
 #pragma GCC diagnostic push
@@ -78,6 +77,8 @@ __weak_alias(strvisx,_strvisx)
 #include <stdio.h>
 #include <string.h>
 
+#include "local-link.h"
+
 #define _DIAGASSERT(x)
 
 /*
@@ -117,7 +118,8 @@ iscgraph(int c) {
 #define ISGRAPH(flags, c) \
     (((flags) & VIS_NOLOCALE) ? iscgraph(c) : iswgraph(c))
 
-#define iswoctal(c)	(((u_char)(c)) >= L'0' && ((u_char)(c)) <= L'7')
+#define iswoctal(c)	\
+	(((unsigned char)(c)) >= L'0' && ((unsigned char)(c)) <= L'7')
 #define iswwhite(c)	(c == L' ' || c == L'\t' || c == L'\n')
 #define iswsafe(c)	(c == L'\b' || c == BELL || c == L'\r')
 #define xtoa(c)		L"0123456789abcdef"[c]
@@ -253,9 +255,11 @@ do_mbyte(wchar_t *dst, wint_t c, int flags, wint_t nextc, int iswextra)
 	}
 	if (iswextra || ((c & 0177) == L' ') || (flags & VIS_OCTAL)) {
 		*dst++ = L'\\';
-		*dst++ = (u_char)(((u_int32_t)(u_char)c >> 6) & 03) + L'0';
-		*dst++ = (u_char)(((u_int32_t)(u_char)c >> 3) & 07) + L'0';
-		*dst++ =			     (c	      & 07) + L'0';
+		*dst++ =
+			(unsigned char)(((uint32_t)(unsigned char)c >> 6) & 03) + L'0';
+		*dst++ =
+			(unsigned char)(((uint32_t)(unsigned char)c >> 3) & 07) + L'0';
+		*dst++ = (c & 07) + L'0';
 	} else {
 		if ((flags & VIS_NOSLASH) == 0)
 			*dst++ = L'\\';
@@ -305,7 +309,7 @@ do_svis(wchar_t *dst, wint_t c, int flags, wint_t nextc, const wchar_t *extra)
 	/* See comment in istrsenvisx() output loop, below. */
 	wmsk = 0;
 	for (i = sizeof(wmsk) - 1; i >= 0; i--) {
-		shft = i * NBBY;
+		shft = i * CHAR_BIT;
 		bmsk = (uint64_t)0xffLL << shft;
 		wmsk |= bmsk;
 		if ((c & wmsk) || i == 0)
@@ -349,7 +353,7 @@ makeextralist(int flags, const char *src)
 	if ((flags & VIS_NOLOCALE) || mbstowcs(dst, src, len) == (size_t)-1) {
 		size_t i;
 		for (i = 0; i < len; i++)
-			dst[i] = (wchar_t)(u_char)src[i];
+			dst[i] = (wchar_t)(unsigned char)src[i];
 		d = dst + len;
 	} else
 		d = dst + wcslen(dst);
@@ -452,7 +456,7 @@ istrsenvisx(char **mbdstp, size_t *dlen, const char *mbsrc, size_t mblength,
 			clen = mbtowc(src, mbsrc, MB_LEN_MAX);
 		if (cerr || clen < 0) {
 			/* Conversion error, process as a byte instead. */
-			*src = (wint_t)(u_char)*mbsrc;
+			*src = (wint_t)(unsigned char)*mbsrc;
 			clen = 1;
 			cerr = 1;
 		}
@@ -503,7 +507,7 @@ istrsenvisx(char **mbdstp, size_t *dlen, const char *mbsrc, size_t mblength,
 	 */
 	for (start = dst; len > 0; len--) {
 		c = *src++;
-		dst = (*f)(dst, c, flags, len >= 1 ? *src : L'\0', extra);
+		dst = (*f)(dst, c, flags, *src, extra);
 		if (dst == NULL) {
 			errno = ENOSPC;
 			goto out;
@@ -536,7 +540,7 @@ istrsenvisx(char **mbdstp, size_t *dlen, const char *mbsrc, size_t mblength,
 			clen = 0;
 			wmsk = 0;
 			for (i = sizeof(wmsk) - 1; i >= 0; i--) {
-				shft = i * NBBY;
+				shft = i * CHAR_BIT;
 				bmsk = (uint64_t)0xffLL << shft;
 				wmsk |= bmsk;
 				if ((*dst & wmsk) || i == 0)
@@ -580,10 +584,20 @@ out:
 }
 
 static int
-istrsenvisxl(char **mbdstp, size_t *dlen, const char *mbsrc,
+istrsenvisxna(char *mbdst, size_t *dlen, const char *mbsrc, size_t mblength,
     int flags, const char *mbextra, int *cerr_ptr)
 {
-	return istrsenvisx(mbdstp, dlen, mbsrc,
+	assert(mbdst != NULL);
+
+	return istrsenvisx(&mbdst, dlen, mbsrc, mblength,
+	    flags, mbextra, cerr_ptr);
+}
+
+static int
+istrsenvisxl(char *mbdst, size_t *dlen, const char *mbsrc,
+    int flags, const char *mbextra, int *cerr_ptr)
+{
+	return istrsenvisxna(mbdst, dlen, mbsrc,
 	    mbsrc != NULL ? strlen(mbsrc) : 0, flags, mbextra, cerr_ptr);
 }
 
@@ -628,33 +642,33 @@ snvis(char *mbdst, size_t dlen, int c, int flags, int nextc, const char *mbextra
 int
 strsvis(char *mbdst, const char *mbsrc, int flags, const char *mbextra)
 {
-	return istrsenvisxl(&mbdst, NULL, mbsrc, flags, mbextra, NULL);
+	return istrsenvisxl(mbdst, NULL, mbsrc, flags, mbextra, NULL);
 }
 
 int
 strsnvis(char *mbdst, size_t dlen, const char *mbsrc, int flags, const char *mbextra)
 {
-	return istrsenvisxl(&mbdst, &dlen, mbsrc, flags, mbextra, NULL);
+	return istrsenvisxl(mbdst, &dlen, mbsrc, flags, mbextra, NULL);
 }
 
 int
 strsvisx(char *mbdst, const char *mbsrc, size_t len, int flags, const char *mbextra)
 {
-	return istrsenvisx(&mbdst, NULL, mbsrc, len, flags, mbextra, NULL);
+	return istrsenvisxna(mbdst, NULL, mbsrc, len, flags, mbextra, NULL);
 }
 
 int
 strsnvisx(char *mbdst, size_t dlen, const char *mbsrc, size_t len, int flags,
     const char *mbextra)
 {
-	return istrsenvisx(&mbdst, &dlen, mbsrc, len, flags, mbextra, NULL);
+	return istrsenvisxna(mbdst, &dlen, mbsrc, len, flags, mbextra, NULL);
 }
 
 int
 strsenvisx(char *mbdst, size_t dlen, const char *mbsrc, size_t len, int flags,
     const char *mbextra, int *cerr_ptr)
 {
-	return istrsenvisx(&mbdst, &dlen, mbsrc, len, flags, mbextra, cerr_ptr);
+	return istrsenvisxna(mbdst, &dlen, mbsrc, len, flags, mbextra, cerr_ptr);
 }
 
 /*
@@ -701,7 +715,7 @@ nvis(char *mbdst, size_t dlen, int c, int flags, int nextc)
 int
 strvis(char *mbdst, const char *mbsrc, int flags)
 {
-	return istrsenvisxl(&mbdst, NULL, mbsrc, flags, "", NULL);
+	return istrsenvisxl(mbdst, NULL, mbsrc, flags, "", NULL);
 }
 
 /*
@@ -721,22 +735,23 @@ strvis(char *mbdst, const char *mbsrc, int flags)
 int
 strnvis_openbsd(char *mbdst, const char *mbsrc, size_t dlen, int flags)
 {
-	return istrsenvisxl(&mbdst, &dlen, mbsrc, flags, "", NULL);
+	return istrsenvisxl(mbdst, &dlen, mbsrc, flags, "", NULL);
 }
-__asm__(".symver strnvis_openbsd,strnvis@@LIBBSD_0.2");
+libbsd_symver_default(strnvis, strnvis_openbsd, LIBBSD_0.2);
 
 int
 strnvis_netbsd(char *mbdst, size_t dlen, const char *mbsrc, int flags)
 {
-	return istrsenvisxl(&mbdst, &dlen, mbsrc, flags, "", NULL);
+	return istrsenvisxl(mbdst, &dlen, mbsrc, flags, "", NULL);
 }
-__asm__(".symver strnvis_netbsd,strnvis@LIBBSD_0.9.1");
+libbsd_symver_variant(strnvis, strnvis_netbsd, LIBBSD_0.9.1);
 
 int
 stravis(char **mbdstp, const char *mbsrc, int flags)
 {
 	*mbdstp = NULL;
-	return istrsenvisxl(mbdstp, NULL, mbsrc, flags, "", NULL);
+	return istrsenvisx(mbdstp, NULL, mbsrc,
+	    mbsrc != NULL ? strlen(mbsrc) : 0, flags, "", NULL);
 }
 
 /*
@@ -753,18 +768,18 @@ stravis(char **mbdstp, const char *mbsrc, int flags)
 int
 strvisx(char *mbdst, const char *mbsrc, size_t len, int flags)
 {
-	return istrsenvisx(&mbdst, NULL, mbsrc, len, flags, "", NULL);
+	return istrsenvisxna(mbdst, NULL, mbsrc, len, flags, "", NULL);
 }
 
 int
 strnvisx(char *mbdst, size_t dlen, const char *mbsrc, size_t len, int flags)
 {
-	return istrsenvisx(&mbdst, &dlen, mbsrc, len, flags, "", NULL);
+	return istrsenvisxna(mbdst, &dlen, mbsrc, len, flags, "", NULL);
 }
 
 int
 strenvisx(char *mbdst, size_t dlen, const char *mbsrc, size_t len, int flags,
     int *cerr_ptr)
 {
-	return istrsenvisx(&mbdst, &dlen, mbsrc, len, flags, "", cerr_ptr);
+	return istrsenvisxna(mbdst, &dlen, mbsrc, len, flags, "", cerr_ptr);
 }

test/nlist.c

@@ -66,6 +66,8 @@ main(int argc, char **argv)
 
 	assert(*data_pub_ptr == 50);
 
+	assert(nl[0].n_name == nl[0].n_un.n_name);
+
 	rc = nlist(argv[0], nl);
 	assert(rc == 0);
 

test/overlay.c

@@ -28,7 +28,9 @@
  * other headers through magic macros, to check that the overlay is working
  * properly. */
 #include <errno.h>
+#ifdef HAVE_GRP_H
 #include <grp.h>
+#endif
 #include <stdint.h>
 
 /* Include libbsd overlayed headers that might get partially included. */