2025-01-18 Collin Funk <collin.funk1@gmail.com>
+ renameatu: Work around a GNU/Hurd bug.
+ * m4/renameat.m4 (gl_FUNC_RENAMEAT): Check if renameat2 handles trailing
+ slashes.
+ * doc/glibc-functions/renameat2.texi: Mention the GNU/Hurd bug.
+
linkat tests: Revert the last change.
* tests/test-linkat.c (main): Disallow EINVAL an alternative error
value.
This function succeeds when the @code{RENAME_NOREPLACE} flag is specified
and the source and destination are the same file, on some platforms:
Cygwin 3.4.6.
+@item
+@code{renameat2 (AT_FDCWD, "file", AT_FDCWD, "new/" ...)} succeeds
+instead of failing and setting @code{errno} to @code{ENOTDIR}, on some
+platforms:
+@c https://sourceware.org/bugzilla/show_bug.cgi?id=32570
+GNU/Hurd.
@end itemize
@mindex renameatu
[gl_cv_func_renameat2_works],
[AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
+ #include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
int main ()
{
+ int fd;
/* This test fails on Cygwin 3.4.6. */
if (renameat2 (AT_FDCWD, "conftest.c", AT_FDCWD, "conftest.c",
RENAME_NOREPLACE) == 0)
return 1;
+ fd = open ("conftest.a", O_CREAT | O_EXCL | O_WRONLY, 0600);
+ if (fd < 0)
+ return 1;
+ /* This test fails on GNU/Hurd. */
+ if (renameat2 (AT_FDCWD, "conftest.a", AT_FDCWD, "conftest.b/", 0) == 0)
+ return 1;
+ if (close (fd) < 0)
+ return 1;
return 0;
}
]])],
[case "$host_os" in
# Guess yes on Linux.
linux*) gl_cv_func_renameat2_works="guessing yes" ;;
+ # Guess no on GNU/Hurd.
+ gnu*) gl_cv_func_renameat2_works="guessing no" ;;
# Guess no on Cygwin.
cygwin*) gl_cv_func_renameat2_works="guessing no" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_renameat2_works="$gl_cross_guess_normal" ;;
esac
])
+ rm -rf conftest.a conftest.b
])
case "$gl_cv_func_renameat2_works" in
*yes)