* build-aux/config.guess: Update from config.

[gnulib.git] / lib / openat.h

diff --git a/lib/openat.h b/lib/openat.h
index 15b1d9d..f8333f0 100644 (file)
--- a/lib/openat.h
+++ b/lib/openat.h
@@ -1,5 +1,5 @@
 /* provide a replacement openat function
-   Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -35,10 +35,24 @@
 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 #endif
 
+/* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive.  Its
+   value exceeds INT_MAX, so its use as an int doesn't conform to the
+   C standard, and GCC and Sun C complain in some cases.  If the bug
+   is present, undef AT_FDCWD here, so it can be redefined below.  */
+#if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
+# undef AT_FDCWD
+#endif
+
+/* Use the same bit pattern as Solaris 9, but with the proper
+   signedness.  The bit pattern is important, in case this actually is
+   Solaris with the above workaround.  */
 #ifndef AT_FDCWD
+# define AT_FDCWD (-3041965)
+#endif
+
 /* Use the same values as Solaris 9.  This shouldn't matter, but
    there's no real reason to differ.  */
-# define AT_FDCWD (-3041965)
+#ifndef AT_SYMLINK_NOFOLLOW
 # define AT_SYMLINK_NOFOLLOW 4096
 # define AT_REMOVEDIR 1
 #endif
@@ -61,14 +75,53 @@ DIR *fdopendir (int fd);
 int fstatat (int fd, char const *file, struct stat *st, int flag);
 # define unlinkat __OPENAT_ID (unlinkat)
 int unlinkat (int fd, char const *file, int flag);
+bool openat_needs_fchdir (void);
 
 #else
 
 # define openat_permissive(Fd, File, Flags, Mode, Cwd_errno) \
     openat (Fd, File, Flags, Mode)
+# define openat_needs_fchdir() false
 
 #endif
 
+#if HAVE_OPENAT && ! LSTAT_FOLLOWS_SLASHED_SYMLINK
+int rpl_fstatat (int fd, char const *file, struct stat *st, int flag);
+# if !COMPILING_FSTATAT
+#  undef fstatat
+#  define fstatat rpl_fstatat
+# endif
+#endif
+
 int mkdirat (int fd, char const *file, mode_t mode);
 void openat_restore_fail (int) ATTRIBUTE_NORETURN;
 void openat_save_fail (int) ATTRIBUTE_NORETURN;
+int fchmodat (int fd, char const *file, mode_t mode, int flag);
+int fchownat (int fd, char const *file, uid_t owner, gid_t group, int flag);
+
+/* Using these function names makes application code
+   slightly more readable than it would be with
+   fchownat (..., 0) or fchownat (..., AT_SYMLINK_NOFOLLOW).  */
+static inline int
+chownat (int fd, char const *file, uid_t owner, gid_t group)
+{
+  return fchownat (fd, file, owner, group, 0);
+}
+
+static inline int
+lchownat (int fd, char const *file, uid_t owner, gid_t group)
+{
+  return fchownat (fd, file, owner, group, AT_SYMLINK_NOFOLLOW);
+}
+
+static inline int
+chmodat (int fd, char const *file, mode_t mode)
+{
+  return fchmodat (fd, file, mode, 0);
+}
+
+static inline int
+lchmodat (int fd, char const *file, mode_t mode)
+{
+  return fchmodat (fd, file, mode, AT_SYMLINK_NOFOLLOW);
+}