3 # Copyright (C) 2001, 2003, 2005-2006, 2009-2018 Free Software Foundation, Inc.
4 # This file is free software; the Free Software Foundation
5 # gives unlimited permission to copy and/or distribute it,
6 # with or without modifications, as long as this notice is preserved.
8 dnl From Volker Borchert.
9 dnl Determine whether rename works for source file names with a trailing slash.
10 dnl The rename from SunOS 4.1.1_U1 doesn't.
12 dnl If it doesn't, then define RENAME_TRAILING_SLASH_BUG and arrange
13 dnl to compile the wrapper function.
16 AC_DEFUN([gl_FUNC_RENAME],
18 AC_REQUIRE([AC_CANONICAL_HOST])
19 AC_REQUIRE([gl_STDIO_H_DEFAULTS])
20 AC_CHECK_FUNCS_ONCE([lstat])
22 dnl Solaris 11.3, AIX 7.1 mistakenly allow rename("file","name/").
23 dnl NetBSD 1.6 mistakenly forbids rename("dir","name/").
24 dnl FreeBSD 7.2 mistakenly allows rename("file","link-to-file/").
25 dnl The Solaris bug can be worked around without stripping
26 dnl trailing slash, while the NetBSD bug requires stripping;
27 dnl the two conditions can be distinguished by whether hard
28 dnl links are also broken.
29 AC_CACHE_CHECK([whether rename honors trailing slash on destination],
30 [gl_cv_func_rename_slash_dst_works],
31 [rm -rf conftest.f conftest.f1 conftest.f2 conftest.d1 conftest.d2 conftest.lnk
32 touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||
33 AC_MSG_ERROR([cannot create temporary files])
34 # Assume that if we have lstat, we can also check symlinks.
35 if test $ac_cv_func_lstat = yes; then
36 ln -s conftest.f conftest.lnk
44 if (rename ("conftest.f1", "conftest.f2/") == 0)
46 if (rename ("conftest.d1", "conftest.d2/") != 0)
49 if (rename ("conftest.f", "conftest.lnk/") == 0)
54 [gl_cv_func_rename_slash_dst_works=yes],
55 [gl_cv_func_rename_slash_dst_works=no],
56 dnl When crosscompiling, assume rename is broken.
58 # Guess yes on Linux systems.
59 linux-* | linux) gl_cv_func_rename_slash_dst_works="guessing yes" ;;
60 # Guess yes on glibc systems.
61 *-gnu*) gl_cv_func_rename_slash_dst_works="guessing yes" ;;
62 # Guess no on native Windows.
63 mingw*) gl_cv_func_rename_slash_dst_works="guessing no" ;;
64 # If we don't know, assume the worst.
65 *) gl_cv_func_rename_slash_dst_works="guessing no" ;;
68 rm -rf conftest.f conftest.f1 conftest.f2 conftest.d1 conftest.d2 conftest.lnk
70 case "$gl_cv_func_rename_slash_dst_works" in
74 AC_DEFINE([RENAME_TRAILING_SLASH_DEST_BUG], [1],
75 [Define if rename does not correctly handle slashes on the destination
76 argument, such as on Solaris 11 or NetBSD 1.6.])
80 dnl SunOS 4.1.1_U1 mistakenly forbids rename("dir/","name").
81 dnl Solaris 9 mistakenly allows rename("file/","name").
82 dnl FreeBSD 7.2 mistakenly allows rename("link-to-file/","name").
83 dnl These bugs require stripping trailing slash to avoid corrupting
84 dnl symlinks with a trailing slash.
85 AC_CACHE_CHECK([whether rename honors trailing slash on source],
86 [gl_cv_func_rename_slash_src_works],
87 [rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
88 touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||
89 AC_MSG_ERROR([cannot create temporary files])
90 # Assume that if we have lstat, we can also check symlinks.
91 if test $ac_cv_func_lstat = yes; then
92 ln -s conftest.f conftest.lnk
100 if (rename ("conftest.f1/", "conftest.d3") == 0)
102 if (rename ("conftest.d1/", "conftest.d2") != 0)
105 if (rename ("conftest.lnk/", "conftest.f") == 0)
110 [gl_cv_func_rename_slash_src_works=yes],
111 [gl_cv_func_rename_slash_src_works=no],
112 dnl When crosscompiling, assume rename is broken.
114 # Guess yes on Linux systems.
115 linux-* | linux) gl_cv_func_rename_slash_src_works="guessing yes" ;;
116 # Guess yes on glibc systems.
117 *-gnu*) gl_cv_func_rename_slash_src_works="guessing yes" ;;
118 # Guess yes on native Windows.
119 mingw*) gl_cv_func_rename_slash_src_works="guessing yes" ;;
120 # If we don't know, assume the worst.
121 *) gl_cv_func_rename_slash_src_works="guessing no" ;;
124 rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
126 case "$gl_cv_func_rename_slash_src_works" in
130 AC_DEFINE([RENAME_TRAILING_SLASH_SOURCE_BUG], [1],
131 [Define if rename does not correctly handle slashes on the source
132 argument, such as on Solaris 9 or cygwin 1.5.])
136 dnl NetBSD 1.6 and cygwin 1.5.x mistakenly reduce hard link count
137 dnl on rename("h1","h2").
138 dnl This bug requires stat'ting targets prior to attempting rename.
139 AC_CHECK_FUNCS_ONCE([link])
140 AC_CACHE_CHECK([whether rename manages hard links correctly],
141 [gl_cv_func_rename_link_works],
142 [if test $ac_cv_func_link = yes; then
143 rm -rf conftest.f conftest.f1 conftest.f2
144 if touch conftest.f conftest.f2 && ln conftest.f conftest.f1 &&
145 set x `ls -i conftest.f conftest.f1` && test "$2" = "$4"; then
154 if (rename ("conftest.f", "conftest.f1"))
156 if (unlink ("conftest.f1"))
159 /* Allow either the POSIX-required behavior, where the
160 previous rename kept conftest.f, or the (better) NetBSD
161 behavior, where it removed conftest.f. */
162 if (rename ("conftest.f", "conftest.f") != 0
166 if (rename ("conftest.f1", "conftest.f1") == 0)
168 if (rename ("conftest.f2", "conftest.f2") != 0)
172 [gl_cv_func_rename_link_works=yes],
173 [gl_cv_func_rename_link_works=no],
174 dnl When crosscompiling, assume rename is broken.
176 # Guess yes on Linux systems.
177 linux-* | linux) gl_cv_func_rename_link_works="guessing yes" ;;
178 # Guess yes on glibc systems.
179 *-gnu*) gl_cv_func_rename_link_works="guessing yes" ;;
180 # Guess yes on native Windows.
181 mingw*) gl_cv_func_rename_link_works="guessing yes" ;;
182 # If we don't know, assume the worst.
183 *) gl_cv_func_rename_link_works="guessing no" ;;
187 gl_cv_func_rename_link_works="guessing no"
189 rm -rf conftest.f conftest.f1 conftest.f2
191 gl_cv_func_rename_link_works=yes
194 case "$gl_cv_func_rename_link_works" in
198 AC_DEFINE([RENAME_HARD_LINK_BUG], [1],
199 [Define if rename fails to leave hard links alone, as on NetBSD 1.6
204 dnl Cygwin 1.5.x mistakenly allows rename("dir","file").
205 dnl mingw mistakenly forbids rename("dir1","dir2").
206 dnl These bugs require stripping trailing slash to avoid corrupting
207 dnl symlinks with a trailing slash.
208 AC_CACHE_CHECK([whether rename manages existing destinations correctly],
209 [gl_cv_func_rename_dest_works],
210 [rm -rf conftest.f conftest.d1 conftest.d2
211 touch conftest.f && mkdir conftest.d1 conftest.d2 ||
212 AC_MSG_ERROR([cannot create temporary files])
219 if (rename ("conftest.d1", "conftest.d2") != 0)
221 if (rename ("conftest.d2", "conftest.f") == 0)
225 [gl_cv_func_rename_dest_works=yes],
226 [gl_cv_func_rename_dest_works=no],
227 dnl When crosscompiling, assume rename is broken.
229 # Guess yes on Linux systems.
230 linux-* | linux) gl_cv_func_rename_dest_works="guessing yes" ;;
231 # Guess yes on glibc systems.
232 *-gnu*) gl_cv_func_rename_dest_works="guessing yes" ;;
233 # Guess no on native Windows.
234 mingw*) gl_cv_func_rename_dest_works="guessing no" ;;
235 # If we don't know, assume the worst.
236 *) gl_cv_func_rename_dest_works="guessing no" ;;
239 rm -rf conftest.f conftest.d1 conftest.d2
241 case "$gl_cv_func_rename_dest_works" in
245 AC_DEFINE([RENAME_DEST_EXISTS_BUG], [1],
246 [Define if rename does not work when the destination file exists,
247 as on Cygwin 1.5 or Windows.])