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authorLudovic Courtès <ludo@gnu.org>2018-09-23 16:39:42 +0200
committerLudovic Courtès <ludo@gnu.org>2018-09-23 16:41:13 +0200
commit3ee7673cc98d2acca3144a81bfbe1351b2bbe0fd (patch)
tree9d775d2874724e742c12fc2b914ecbc2a294abd7
parent663b8826d7867578f8df509a5f986c671f857938 (diff)
downloadguile-3ee7673cc98d2acca3144a81bfbe1351b2bbe0fd.tar.gz
Define AT_SYMLINK_NOFOLLOW et al.
* libguile/posix.c (scm_init_posix): Define AT_SYMLINK_NOFOLLOW, AT_SYMLINK_FOLLOW, AT_NO_AUTOMOUNT, and AT_EMPTY_PATH when available. (scm_utime): Mention AT_SYMLINK_NOFOLLOW. * doc/ref/posix.texi (File System): Update accordingly. * test-suite/tests/posix.test ("utime")["AT_SYMLINK_NOFOLLOW"]: New test.
-rw-r--r--doc/ref/posix.texi5
-rw-r--r--libguile/posix.c18
-rw-r--r--test-suite/tests/posix.test19
3 files changed, 39 insertions, 3 deletions
diff --git a/doc/ref/posix.texi b/doc/ref/posix.texi
index 5cb68a292..1470e5f36 100644
--- a/doc/ref/posix.texi
+++ b/doc/ref/posix.texi
@@ -801,6 +801,11 @@ systems.
@end lisp
will set the access time to one hour in the past and the
modification time to the current time.
+
+@vindex AT_SYMLINK_NOFOLLOW
+Last, @var{flags} may be either @code{0} or the
+@code{AT_SYMLINK_NOFOLLOW} constant, to set the time of
+@var{pathname} even if it is a symbolic link.
@end deffn
@findex unlink
diff --git a/libguile/posix.c b/libguile/posix.c
index b0fcad5fd..d8200926d 100644
--- a/libguile/posix.c
+++ b/libguile/posix.c
@@ -1624,7 +1624,10 @@ SCM_DEFINE (scm_utime, "utime", 1, 5, 0,
"(utime \"foo\" (- (current-time) 3600))\n"
"@end lisp\n"
"will set the access time to one hour in the past and the\n"
- "modification time to the current time.")
+ "modification time to the current time.\n\n"
+ "Last, @var{flags} may be either @code{0} or the\n"
+ "@code{AT_SYMLINK_NOFOLLOW} constant, to set the time of\n"
+ "@var{pathname} even if it is a symbolic link.\n")
#define FUNC_NAME s_scm_utime
{
int rv;
@@ -2433,6 +2436,19 @@ scm_init_posix ()
scm_c_define ("LOCK_NB", scm_from_int (LOCK_NB));
#endif
+#ifdef AT_SYMLINK_NOFOLLOW
+ scm_c_define ("AT_SYMLINK_NOFOLLOW", scm_from_int (AT_SYMLINK_NOFOLLOW));
+#endif
+#ifdef AT_SYMLINK_FOLLOW
+ scm_c_define ("AT_SYMLINK_FOLLOW", scm_from_int (AT_SYMLINK_FOLLOW));
+#endif
+#ifdef AT_NO_AUTOMOUNT
+ scm_c_define ("AT_NO_AUTOMOUNT", scm_from_int (AT_NO_AUTOMOUNT));
+#endif
+#ifdef AT_EMPTY_PATH
+ scm_c_define ("AT_EMPTY_PATH", scm_from_int (AT_EMPTY_PATH));
+#endif
+
#include "libguile/cpp-SIG.c"
#include "libguile/posix.x"
diff --git a/test-suite/tests/posix.test b/test-suite/tests/posix.test
index 4dadd7784..63b451397 100644
--- a/test-suite/tests/posix.test
+++ b/test-suite/tests/posix.test
@@ -1,7 +1,7 @@
;;;; posix.test --- Test suite for Guile POSIX functions. -*- scheme -*-
;;;;
;;;; Copyright 2003, 2004, 2006, 2007, 2010, 2012,
-;;;; 2015, 2017 Free Software Foundation, Inc.
+;;;; 2015, 2017, 2018 Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
@@ -181,7 +181,22 @@
(and (= (stat:atime info) accessed)
(= (stat:mtime info) modified)))))
(lambda ()
- (delete-file file))))))
+ (delete-file file)))))
+
+ (pass-if-equal "AT_SYMLINK_NOFOLLOW"
+ '(1 1)
+ (if (defined? 'AT_SYMLINK_NOFOLLOW)
+ (let ((file "posix.test-utime"))
+ (dynamic-wind
+ (lambda ()
+ (symlink "/dev/null" file))
+ (lambda ()
+ (utime file 1 1 0 0 AT_SYMLINK_NOFOLLOW)
+ (let ((info (lstat file)))
+ (list (stat:atime info) (stat:mtime info))))
+ (lambda ()
+ (delete-file file))))
+ (throw 'unsupported))))
;;
;; affinity