Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef _GL_UNISTD_H
-#define _GL_UNISTD_H
+/* The include_next requires a split double-inclusion guard. */
#if @HAVE_UNISTD_H@
-# include @ABSOLUTE_UNISTD_H@
+# if @HAVE_INCLUDE_NEXT@
+# include_next <unistd.h>
+# else
+# include @ABSOLUTE_UNISTD_H@
+# endif
#endif
+#ifndef _GL_UNISTD_H
+#define _GL_UNISTD_H
+
/* mingw doesn't define the SEEK_* macros in <unistd.h>. */
#if !(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET)
# include <stdio.h>
#if @GNULIB_CHOWN@
# if @REPLACE_CHOWN@
+# ifndef REPLACE_CHOWN
+# define REPLACE_CHOWN 1
+# endif
+# if REPLACE_CHOWN
/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
- to GID (if GID is not -1).
+ to GID (if GID is not -1). Follow symbolic links.
Return 0 if successful, otherwise -1 and errno set.
See the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/chown.html>. */
-# define chown rpl_chown
+# define chown rpl_chown
extern int chown (const char *file, uid_t uid, gid_t gid);
+# endif
# endif
#elif defined GNULIB_POSIXCHECK
# undef chown
#endif
+#if @GNULIB_LCHOWN@
+# if @REPLACE_LCHOWN@
+/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
+ to GID (if GID is not -1). Do not follow symbolic links.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/lchown.html>. */
+# define lchown rpl_lchown
+extern int lchown (char const *file, uid_t owner, gid_t group);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef lchown
+# define lchown(f,u,g) \
+ (GL_LINK_WARNING ("lchown is unportable to pre-POSIX.1-2001 " \
+ "systems - use gnulib module lchown for portability"), \
+ lchown (f, u, g))
+#endif
+
+
+#if @GNULIB_LSEEK@
+# if @REPLACE_LSEEK@
+/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
+ Return the new offset if successful, otherwise -1 and errno set.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/lseek.html>. */
+# define lseek rpl_lseek
+ extern off_t lseek (int fd, off_t offset, int whence);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef lseek
+# define lseek(f,o,w) \
+ (GL_LINK_WARNING ("lseek does not fail with ESPIPE on pipes on some " \
+ "systems - use gnulib module lseek for portability"), \
+ lseek (f, o, w))
+#endif
+
+
#if @GNULIB_READLINK@
/* 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
#endif
+#if @GNULIB_SLEEP@
+/* Pause the execution of the current thread for N seconds.
+ Returns the number of seconds left to sleep.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/sleep.html>. */
+# if !@HAVE_SLEEP@
+extern unsigned int sleep (unsigned int n);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef sleep
+# define sleep(n) \
+ (GL_LINK_WARNING ("sleep is unportable - " \
+ "use gnulib module sleep for portability"), \
+ sleep (n))
+#endif
+
+
#ifdef __cplusplus
}
#endif
#endif /* _GL_UNISTD_H */
+#endif /* _GL_UNISTD_H */