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-rw-r--r--gl/Makefile.am6
-rw-r--r--gl/m4/sys_stat_h.m413
-rw-r--r--gl/m4/unistd_h.m48
-rw-r--r--gl/tests/Makefile.am8
-rw-r--r--gl/unistd.in.h43
5 files changed, 63 insertions, 15 deletions
diff --git a/gl/Makefile.am b/gl/Makefile.am
index 6859a5e898..c03aa4e536 100644
--- a/gl/Makefile.am
+++ b/gl/Makefile.am
@@ -1098,12 +1098,14 @@ unistd.h: unistd.in.h
-e 's|@''GNULIB_GETUSERSHELL''@|$(GNULIB_GETUSERSHELL)|g' \
-e 's|@''GNULIB_LCHOWN''@|$(GNULIB_LCHOWN)|g' \
-e 's|@''GNULIB_LINK''@|$(GNULIB_LINK)|g' \
+ -e 's|@''GNULIB_LINKAT''@|$(GNULIB_LINKAT)|g' \
-e 's|@''GNULIB_LSEEK''@|$(GNULIB_LSEEK)|g' \
-e 's|@''GNULIB_PIPE2''@|$(GNULIB_PIPE2)|g' \
-e 's|@''GNULIB_READLINK''@|$(GNULIB_READLINK)|g' \
-e 's|@''GNULIB_READLINKAT''@|$(GNULIB_READLINKAT)|g' \
-e 's|@''GNULIB_RMDIR''@|$(GNULIB_RMDIR)|g' \
-e 's|@''GNULIB_SLEEP''@|$(GNULIB_SLEEP)|g' \
+ -e 's|@''GNULIB_SYMLINK''@|$(GNULIB_SYMLINK)|g' \
-e 's|@''GNULIB_SYMLINKAT''@|$(GNULIB_SYMLINKAT)|g' \
-e 's|@''GNULIB_UNISTD_H_GETOPT''@|$(GNULIB_UNISTD_H_GETOPT)|g' \
-e 's|@''GNULIB_UNISTD_H_SIGPIPE''@|$(GNULIB_UNISTD_H_SIGPIPE)|g' \
@@ -1123,10 +1125,12 @@ unistd.h: unistd.in.h
-e 's|@''HAVE_GETPAGESIZE''@|$(HAVE_GETPAGESIZE)|g' \
-e 's|@''HAVE_GETUSERSHELL''@|$(HAVE_GETUSERSHELL)|g' \
-e 's|@''HAVE_LINK''@|$(HAVE_LINK)|g' \
+ -e 's|@''HAVE_LINKAT''@|$(HAVE_LINKAT)|g' \
-e 's|@''HAVE_PIPE2''@|$(HAVE_PIPE2)|g' \
-e 's|@''HAVE_READLINK''@|$(HAVE_READLINK)|g' \
-e 's|@''HAVE_READLINKAT''@|$(HAVE_READLINKAT)|g' \
-e 's|@''HAVE_SLEEP''@|$(HAVE_SLEEP)|g' \
+ -e 's|@''HAVE_SYMLINK''@|$(HAVE_SYMLINK)|g' \
-e 's|@''HAVE_SYMLINKAT''@|$(HAVE_SYMLINKAT)|g' \
-e 's|@''HAVE_UNLINKAT''@|$(HAVE_UNLINKAT)|g' \
-e 's|@''HAVE_DECL_ENVIRON''@|$(HAVE_DECL_ENVIRON)|g' \
@@ -1144,7 +1148,9 @@ unistd.h: unistd.in.h
-e 's|@''REPLACE_LCHOWN''@|$(REPLACE_LCHOWN)|g' \
-e 's|@''REPLACE_LINK''@|$(REPLACE_LINK)|g' \
-e 's|@''REPLACE_LSEEK''@|$(REPLACE_LSEEK)|g' \
+ -e 's|@''REPLACE_READLINK''@|$(REPLACE_READLINK)|g' \
-e 's|@''REPLACE_RMDIR''@|$(REPLACE_RMDIR)|g' \
+ -e 's|@''REPLACE_SYMLINK''@|$(REPLACE_SYMLINK)|g' \
-e 's|@''REPLACE_UNLINK''@|$(REPLACE_UNLINK)|g' \
-e 's|@''REPLACE_UNLINKAT''@|$(REPLACE_UNLINKAT)|g' \
-e 's|@''REPLACE_WRITE''@|$(REPLACE_WRITE)|g' \
diff --git a/gl/m4/sys_stat_h.m4 b/gl/m4/sys_stat_h.m4
index df7b238a48..d37fea827b 100644
--- a/gl/m4/sys_stat_h.m4
+++ b/gl/m4/sys_stat_h.m4
@@ -1,4 +1,4 @@
-# sys_stat_h.m4 serial 16 -*- Autoconf -*-
+# sys_stat_h.m4 serial 17 -*- Autoconf -*-
dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -11,16 +11,6 @@ AC_DEFUN([gl_HEADER_SYS_STAT_H],
[
AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
- dnl Check for lstat. Systems that lack it (mingw) also lack symlinks, so
- dnl stat is a good replacement.
- AC_CHECK_FUNCS_ONCE([lstat])
- if test $ac_cv_func_lstat = yes; then
- HAVE_LSTAT=1
- else
- HAVE_LSTAT=0
- fi
- AC_SUBST([HAVE_LSTAT])
-
dnl For the mkdir substitute.
AC_REQUIRE([AC_C_INLINE])
@@ -61,6 +51,7 @@ AC_DEFUN([gl_SYS_STAT_H_DEFAULTS],
HAVE_FCHMODAT=1; AC_SUBST([HAVE_FCHMODAT])
HAVE_FSTATAT=1; AC_SUBST([HAVE_FSTATAT])
HAVE_LCHMOD=1; AC_SUBST([HAVE_LCHMOD])
+ HAVE_LSTAT=1; AC_SUBST([HAVE_LSTAT])
HAVE_MKDIRAT=1; AC_SUBST([HAVE_MKDIRAT])
HAVE_MKFIFOAT=1; AC_SUBST([HAVE_MKFIFOAT])
HAVE_MKNODAT=1; AC_SUBST([HAVE_MKNODAT])
diff --git a/gl/m4/unistd_h.m4 b/gl/m4/unistd_h.m4
index 648fd86a6b..16daed884c 100644
--- a/gl/m4/unistd_h.m4
+++ b/gl/m4/unistd_h.m4
@@ -1,4 +1,4 @@
-# unistd_h.m4 serial 29
+# unistd_h.m4 serial 30
dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -52,12 +52,14 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
GNULIB_GETUSERSHELL=0; AC_SUBST([GNULIB_GETUSERSHELL])
GNULIB_LCHOWN=0; AC_SUBST([GNULIB_LCHOWN])
GNULIB_LINK=0; AC_SUBST([GNULIB_LINK])
+ GNULIB_LINKAT=0; AC_SUBST([GNULIB_LINKAT])
GNULIB_LSEEK=0; AC_SUBST([GNULIB_LSEEK])
GNULIB_PIPE2=0; AC_SUBST([GNULIB_PIPE2])
GNULIB_READLINK=0; AC_SUBST([GNULIB_READLINK])
GNULIB_READLINKAT=0; AC_SUBST([GNULIB_READLINKAT])
GNULIB_RMDIR=0; AC_SUBST([GNULIB_RMDIR])
GNULIB_SLEEP=0; AC_SUBST([GNULIB_SLEEP])
+ GNULIB_SYMLINK=0; AC_SUBST([GNULIB_SYMLINK])
GNULIB_SYMLINKAT=0; AC_SUBST([GNULIB_SYMLINKAT])
GNULIB_UNISTD_H_GETOPT=0; AC_SUBST([GNULIB_UNISTD_H_GETOPT])
GNULIB_UNISTD_H_SIGPIPE=0; AC_SUBST([GNULIB_UNISTD_H_SIGPIPE])
@@ -78,10 +80,12 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
HAVE_GETPAGESIZE=1; AC_SUBST([HAVE_GETPAGESIZE])
HAVE_GETUSERSHELL=1; AC_SUBST([HAVE_GETUSERSHELL])
HAVE_LINK=1; AC_SUBST([HAVE_LINK])
+ HAVE_LINKAT=1; AC_SUBST([HAVE_LINKAT])
HAVE_PIPE2=1; AC_SUBST([HAVE_PIPE2])
HAVE_READLINK=1; AC_SUBST([HAVE_READLINK])
HAVE_READLINKAT=1; AC_SUBST([HAVE_READLINKAT])
HAVE_SLEEP=1; AC_SUBST([HAVE_SLEEP])
+ HAVE_SYMLINK=1; AC_SUBST([HAVE_SYMLINK])
HAVE_SYMLINKAT=1; AC_SUBST([HAVE_SYMLINKAT])
HAVE_DECL_ENVIRON=1; AC_SUBST([HAVE_DECL_ENVIRON])
HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
@@ -99,7 +103,9 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
REPLACE_LCHOWN=0; AC_SUBST([REPLACE_LCHOWN])
REPLACE_LINK=0; AC_SUBST([REPLACE_LINK])
REPLACE_LSEEK=0; AC_SUBST([REPLACE_LSEEK])
+ REPLACE_READLINK=0; AC_SUBST([REPLACE_READLINK])
REPLACE_RMDIR=0; AC_SUBST([REPLACE_RMDIR])
+ REPLACE_SYMLINK=0; AC_SUBST([REPLACE_SYMLINK])
REPLACE_UNLINK=0; AC_SUBST([REPLACE_UNLINK])
REPLACE_UNLINKAT=0; AC_SUBST([REPLACE_UNLINKAT])
REPLACE_WRITE=0; AC_SUBST([REPLACE_WRITE])
diff --git a/gl/tests/Makefile.am b/gl/tests/Makefile.am
index 8867a8177a..e782748c41 100644
--- a/gl/tests/Makefile.am
+++ b/gl/tests/Makefile.am
@@ -151,6 +151,14 @@ EXTRA_libtests_a_SOURCES += ioctl.c
## end gnulib module ioctl
+## begin gnulib module link-warning
+
+LINK_WARNING_H=$(top_srcdir)/build-aux/link-warning.h
+
+EXTRA_DIST += $(top_srcdir)/build-aux/link-warning.h
+
+## end gnulib module link-warning
+
## begin gnulib module lseek-tests
TESTS += test-lseek.sh
diff --git a/gl/unistd.in.h b/gl/unistd.in.h
index 74779b1c4f..fa4f4c83c0 100644
--- a/gl/unistd.in.h
+++ b/gl/unistd.in.h
@@ -41,7 +41,9 @@
/* mingw, BeOS, Haiku declare environ in <stdlib.h>, not in <unistd.h>. */
#include <stdlib.h>
-#if @GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@
+#if ((@GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@) \
+ || (@GNULIB_READLINK@ && (!@HAVE_READLINK@ || @REPLACE_READLINK@)) \
+ || (@GNULIB_READLINKAT@ && !@HAVE_READLINKAT@))
/* Get ssize_t. */
# include <sys/types.h>
#endif
@@ -579,6 +581,21 @@ extern int link (const char *path1, const char *path2);
link (path1, path2))
#endif
+#if @GNULIB_LINKAT@
+/* Create a new hard link for an existing file, relative to two
+ directories. FLAG controls whether symlinks are followed.
+ Return 0 if successful, otherwise -1 and errno set. */
+# if !@HAVE_LINKAT@
+extern int linkat (int fd1, const char *path1, int fd2, const char *path2,
+ int flag);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef linkat
+# define link(f1,path1,f2,path2,f) \
+ (GL_LINK_WARNING ("linkat is unportable - " \
+ "use gnulib module linkat for portability"), \
+ linkat (f1, path1, f2, path2,f))
+#endif
#if @GNULIB_LSEEK@
# if @REPLACE_LSEEK@
@@ -621,13 +638,16 @@ extern int pipe2 (int fd[2], int flags);
#if @GNULIB_READLINK@
+# if @REPLACE_READLINK@
+# define readlink rpl_readlink
+# endif
/* Read the contents of the symbolic link FILE and place the first BUFSIZE
bytes of it into BUF. Return the number of bytes placed into BUF if
successful, otherwise -1 and errno set.
See the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/readlink.html>. */
-# if !@HAVE_READLINK@
-extern int readlink (const char *file, char *buf, size_t bufsize);
+# if !@HAVE_READLINK@ || @REPLACE_READLINK@
+extern ssize_t readlink (const char *file, char *buf, size_t bufsize);
# endif
#elif defined GNULIB_POSIXCHECK
# undef readlink
@@ -683,6 +703,23 @@ extern unsigned int sleep (unsigned int n);
#endif
+#if @GNULIB_SYMLINK@
+# if @REPLACE_SYMLINK@
+# undef symlink
+# define symlink rpl_symlink
+# endif
+# if !@HAVE_SYMLINK@ || @REPLACE_SYMLINK@
+int symlink (char const *contents, char const *file);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef symlink
+# define symlink(c,n) \
+ (GL_LINK_WARNING ("symlink is not portable - " \
+ "use gnulib module symlink for portability"), \
+ symlink (c, n))
+#endif
+
+
#if @GNULIB_SYMLINKAT@
# if !@HAVE_SYMLINKAT@
int symlinkat (char const *contents, int fd, char const *file);
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