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authorJim Meyering <jim@meyering.net>2004-11-28 20:55:05 +0000
committerJim Meyering <jim@meyering.net>2004-11-28 20:55:05 +0000
commit45eac4b4089216bb9499bbad2f4e4badf098b571 (patch)
tree64267a0e3e6bcaa14fc3f2f1930c09b0cf6c4517 /m4
parent72dcf681bc226db858935a2fa611556aed6c883f (diff)
downloadcoreutils-45eac4b4089216bb9499bbad2f4e4badf098b571.tar.xz
*** empty log message ***
Diffstat (limited to 'm4')
-rw-r--r--m4/chdir.m430
1 files changed, 30 insertions, 0 deletions
diff --git a/m4/chdir.m4 b/m4/chdir.m4
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+++ b/m4/chdir.m4
@@ -0,0 +1,30 @@
+#serial 1
+
+# From Jim Meyering.
+# Use Gnulib's robust replacement chdir function.
+# It can handle arbitrarily long directory names, which means
+# that when it is given the name of an existing directory, it
+# never fails with ENAMETOOLONG.
+#
+# FIXME: we don't really want to use this function on systems that
+# do not define PATH_MAX...
+#
+# It still fails with ENAMETOOLONG if the specified directory
+# name contains a component that would provoke such a failure
+# all by itself (e.g. if the component is longer than PATH_MAX
+# on systems that define PATH_MAX).
+
+AC_DEFUN([gl_FUNC_CHDIR],
+[
+ AC_LIBOBJ([chdir])
+ AC_DEFINE([__CHDIR_PREFIX], [[rpl_]],
+ [Define to rpl_ if the chdir replacement function should be used.])
+ gl_PREREQ_CHDIR
+])
+
+AC_DEFUN([gl_PREREQ_CHDIR],
+[
+ AM_STDBOOL_H
+ gl_FUNC_MEMPCPY
+ gl_FUNC_OPENAT
+])