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-rw-r--r--ChangeLog32
-rw-r--r--dirent/fdopendir.c5
-rw-r--r--include/dirent.h2
-rw-r--r--include/sys/stat.h1
-rw-r--r--io/ftw.c62
-rw-r--r--io/ftw64.c3
-rw-r--r--io/fxstatat.c3
-rw-r--r--io/fxstatat64.c3
-rw-r--r--libio/wgenops.c4
-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h30
-rw-r--r--sysdeps/generic/not-cancel.h10
-rw-r--r--sysdeps/mach/hurd/fdopendir.c5
-rw-r--r--sysdeps/unix/fdopendir.c3
-rw-r--r--sysdeps/unix/sysv/linux/fxstatat.c44
-rw-r--r--sysdeps/unix/sysv/linux/fxstatat64.c54
-rw-r--r--sysdeps/unix/sysv/linux/i386/fxstatat.c51
-rw-r--r--sysdeps/unix/sysv/linux/not-cancel.h17
-rw-r--r--sysdeps/unix/sysv/linux/openat.c75
-rw-r--r--sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c1
19 files changed, 308 insertions, 97 deletions
diff --git a/ChangeLog b/ChangeLog
index 902544d51d..a0c4c17274 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,35 @@
+2006-02-12 Ulrich Drepper <drepper@redhat.com>
+
+ * io/ftw.c: Start using *at functions.
+ * io/ftw64.c: Likewise.
+
+ * sysdeps/generic/not-cancel.h: Define openat_not_cancel,
+ openat_not_cancel_3, openat64_not_cancel, and openat64_not_cancel_3.
+ * sysdeps/unix/sysv/linux/not-cancel.h: Likewise.
+
+ * sysdeps/unix/sysv/linux/openat.c: Create separate _nocancel
+ functions.
+
+ * io/fxstatat.c: Add __fxstatat alias.
+ * sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c: Likewise.
+ * sysdeps/unix/sysv/linux/fxstatat.c: Likewise. Add support for
+ newfstatat syscall.
+ * sysdeps/unix/sysv/linux/i386/fxstatat.c: Add __fxstatat alias.
+ Add support for fstatat64 syscall.
+ * include/sys/stat.h: Declare __fxstatat.
+ * io/fxstatat64.c: Add __fxstatat64 alias.
+ * sysdeps/unix/sysv/linux/fxstatat64.c: Add support for fstatat64
+ syscall.
+
+ * dirent/fdopendir.c: Add __fdopendir alias.
+ * sysdeps/unix/fdopendir.c: Likewise.
+ * sysdeps/mach/hurd/fdopendir.c: Likewise.
+ * include/dirent.h: Add __fdopendir declaration.
+
+ [BZ #2226]
+ * libio/wgenops.c (_IO_wsetb): Use correct size of wide char
+ buffer in FREE_BUF call.
+
2006-02-08 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/bits/sched.h: Declare unshare.
diff --git a/dirent/fdopendir.c b/dirent/fdopendir.c
index ed30e89e7e..275cfd58fe 100644
--- a/dirent/fdopendir.c
+++ b/dirent/fdopendir.c
@@ -1,5 +1,5 @@
/* Open a directory stream from a file descriptor. Stub version.
- Copyright (C) 2005 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -24,11 +24,12 @@
/* Open a directory stream on FD. */
DIR *
-fdopendir (int fd)
+__fdopendir (int fd)
{
__set_errno (ENOSYS);
return NULL;
}
+weak_alias (__fdopendir, fdopendir)
stub_warning (fdopendir)
#include <stub-tag.h>
diff --git a/include/dirent.h b/include/dirent.h
index 681024fd02..8f23aee234 100644
--- a/include/dirent.h
+++ b/include/dirent.h
@@ -6,6 +6,7 @@
/* Now define the internal interfaces. */
extern DIR *__opendir (__const char *__name);
+extern DIR *__fdopendir (int __fd);
extern int __closedir (DIR *__dirp);
extern struct dirent *__readdir (DIR *__dirp);
extern struct dirent64 *__readdir64 (DIR *__dirp);
@@ -27,4 +28,5 @@ extern int __versionsort64 (const void *a, const void *b)
__attribute_pure__;
extern DIR *__alloc_dir (int fd, bool close_fd, const struct stat64 *statp)
internal_function;
+
#endif
diff --git a/include/sys/stat.h b/include/sys/stat.h
index 72105a45a9..66898b1760 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -31,6 +31,7 @@ extern __inline__ int __mknod (__const char *__path, __mode_t __mode,
}
libc_hidden_proto (__xmknodat)
+libc_hidden_proto (__fxstatat)
libc_hidden_proto (__fxstatat64)
diff --git a/io/ftw.c b/io/ftw.c
index f24a6b46fe..50303d9cd0 100644
--- a/io/ftw.c
+++ b/io/ftw.c
@@ -66,6 +66,7 @@ char *alloca ();
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <not-cancel.h>
#if HAVE_SYS_PARAM_H || defined _LIBC
# include <sys/param.h>
#endif
@@ -143,9 +144,11 @@ int rpl_lstat (const char *, struct stat *);
# ifdef _LIBC
# define LXSTAT __lxstat
# define XSTAT __xstat
+# define FXSTATAT __fxstatat
# else
# define LXSTAT(V,f,sb) lstat (f,sb)
# define XSTAT(V,f,sb) stat (f,sb)
+# define FXSTATAT(V,d,f,sb,m) fstatat (d, f, sb, m)
# endif
# define FTW_FUNC_T __ftw_func_t
# define NFTW_FUNC_T __nftw_func_t
@@ -162,6 +165,7 @@ int rpl_lstat (const char *, struct stat *);
struct dir_data
{
DIR *stream;
+ int streamfd;
char *content;
};
@@ -263,7 +267,7 @@ find_object (struct ftw_data *data, struct STAT *st)
static inline int
__attribute ((always_inline))
-open_dir_stream (struct ftw_data *data, struct dir_data *dirp)
+open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
{
int result = 0;
@@ -324,6 +328,7 @@ open_dir_stream (struct ftw_data *data, struct dir_data *dirp)
{
__closedir (st);
data->dirstreams[data->actdir]->stream = NULL;
+ data->dirstreams[data->actdir]->streamfd = -1;
data->dirstreams[data->actdir] = NULL;
}
}
@@ -332,15 +337,28 @@ open_dir_stream (struct ftw_data *data, struct dir_data *dirp)
/* Open the new stream. */
if (result == 0)
{
- const char *name = ((data->flags & FTW_CHDIR)
- ? data->dirbuf + data->ftw.base: data->dirbuf);
assert (data->dirstreams[data->actdir] == NULL);
- dirp->stream = __opendir (name);
+ if (dfdp != NULL && *dfdp != -1)
+ {
+ int fd = openat64_not_cancel_3 (*dfdp, data->dirbuf + data->ftw.base,
+ O_RDONLY | O_DIRECTORY | O_NDELAY);
+ dirp->stream = NULL;
+ if (fd != -1 && (dirp->stream = __fdopendir (fd)) == NULL)
+ close_not_cancel_no_status (fd);
+ }
+ else
+ {
+ const char *name = ((data->flags & FTW_CHDIR)
+ ? data->dirbuf + data->ftw.base: data->dirbuf);
+ dirp->stream = __opendir (name);
+ }
+
if (dirp->stream == NULL)
result = -1;
else
{
+ dirp->streamfd = dirfd (dirp->stream);
dirp->content = NULL;
data->dirstreams[data->actdir] = dirp;
@@ -356,7 +374,7 @@ open_dir_stream (struct ftw_data *data, struct dir_data *dirp)
static int
internal_function
process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
- size_t namlen)
+ size_t namlen, int d_type)
{
struct STAT st;
int result = 0;
@@ -383,18 +401,28 @@ process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
*((char *) __mempcpy (data->dirbuf + data->ftw.base, name, namlen)) = '\0';
- if ((data->flags & FTW_CHDIR) == 0)
- name = data->dirbuf;
+ int statres;
+ if (dir->streamfd != -1)
+ statres = FXSTATAT (_STAT_VER, dir->streamfd, name, &st,
+ (data->flags & FTW_PHYS) ? AT_SYMLINK_NOFOLLOW : 0);
+ else
+ {
+ if ((data->flags & FTW_CHDIR) == 0)
+ name = data->dirbuf;
+
+ statres = ((data->flags & FTW_PHYS)
+ ? LXSTAT (_STAT_VER, name, &st)
+ : XSTAT (_STAT_VER, name, &st));
+ }
- if (((data->flags & FTW_PHYS)
- ? LXSTAT (_STAT_VER, name, &st)
- : XSTAT (_STAT_VER, name, &st)) < 0)
+ if (statres < 0)
{
if (errno != EACCES && errno != ENOENT)
result = -1;
else if (!(data->flags & FTW_PHYS)
- && LXSTAT (_STAT_VER, name, &st) == 0
- && S_ISLNK (st.st_mode))
+ && (d_type == DT_LNK
+ || (LXSTAT (_STAT_VER, name, &st) == 0
+ && S_ISLNK (st.st_mode))))
flag = FTW_SLN;
else
flag = FTW_NS;
@@ -446,7 +474,8 @@ ftw_dir (struct ftw_data *data, struct STAT *st, struct dir_data *old_dir)
/* Open the stream for this directory. This might require that
another stream has to be closed. */
- result = open_dir_stream (data, &dir);
+ result = open_dir_stream (old_dir == NULL ? NULL : &old_dir->streamfd,
+ data, &dir);
if (result != 0)
{
if (errno == EACCES)
@@ -466,6 +495,7 @@ ftw_dir (struct ftw_data *data, struct STAT *st, struct dir_data *old_dir)
fail:
save_err = errno;
__closedir (dir.stream);
+ dir.streamfd = -1;
__set_errno (save_err);
if (data->actdir-- == 0)
@@ -496,7 +526,7 @@ fail:
while (dir.stream != NULL && (d = __readdir64 (dir.stream)) != NULL)
{
- result = process_entry (data, &dir, d->d_name, NAMLEN (d));
+ result = process_entry (data, &dir, d->d_name, NAMLEN (d), d->d_type);
if (result != 0)
break;
}
@@ -510,6 +540,7 @@ fail:
assert (dir.content == NULL);
__closedir (dir.stream);
+ dir.streamfd = -1;
__set_errno (save_err);
if (data->actdir-- == 0)
@@ -525,7 +556,8 @@ fail:
{
char *endp = strchr (runp, '\0');
- result = process_entry (data, &dir, runp, endp - runp);
+ // XXX Should store the d_type values as well?!
+ result = process_entry (data, &dir, runp, endp - runp, DT_UNKNOWN);
runp = endp + 1;
}
diff --git a/io/ftw64.c b/io/ftw64.c
index 7913b7af17..39e6ceabf8 100644
--- a/io/ftw64.c
+++ b/io/ftw64.c
@@ -1,5 +1,5 @@
/* File tree walker functions. LFS version.
- Copyright (C) 1996, 1997, 1998, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 2001, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
@@ -26,6 +26,7 @@
#define STAT stat64
#define LXSTAT __lxstat64
#define XSTAT __xstat64
+#define FXSTATAT __fxstatat64
#define FTW_FUNC_T __ftw64_func_t
#define NFTW_FUNC_T __nftw64_func_t
diff --git a/io/fxstatat.c b/io/fxstatat.c
index 62f7fe3efb..2486c73c84 100644
--- a/io/fxstatat.c
+++ b/io/fxstatat.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -45,5 +45,6 @@ __fxstatat (int vers, int fd, const char *filename, struct stat *buf, int flag)
__set_errno (ENOSYS);
return -1;
}
+libc_hidden_def (__fxstatat)
stub_warning (fstatat)
#include <stub-tag.h>
diff --git a/io/fxstatat64.c b/io/fxstatat64.c
index ba95b73e81..20bdd610c3 100644
--- a/io/fxstatat64.c
+++ b/io/fxstatat64.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -46,5 +46,6 @@ __fxstatat64 (int vers, int fd, const char *filename, struct stat64 *buf,
__set_errno (ENOSYS);
return -1;
}
+libc_hidden_def (__fxstatat64)
stub_warning (fstatat64)
#include <stub-tag.h>
diff --git a/libio/wgenops.c b/libio/wgenops.c
index a9cc7bf210..355fd2603d 100644
--- a/libio/wgenops.c
+++ b/libio/wgenops.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993,1995,1997-2001,2002,2004 Free Software Foundation, Inc.
+/* Copyright (C) 1993,1995,1997-2002,2004,2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper <drepper@cygnus.com>.
Based on the single byte version by Per Bothner <bothner@cygnus.com>.
@@ -116,7 +116,7 @@ _IO_wsetb (f, b, eb, a)
int a;
{
if (f->_wide_data->_IO_buf_base && !(f->_flags & _IO_USER_BUF))
- FREE_BUF (f->_wide_data->_IO_buf_base, _IO_wblen (f));
+ FREE_BUF (f->_wide_data->_IO_buf_base, _IO_wblen (f) * sizeof (wchar_t));
f->_wide_data->_IO_buf_base = b;
f->_wide_data->_IO_buf_end = eb;
if (a)
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h b/nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h
index cc3282fbdd..91584948ae 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h
+++ b/nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h
@@ -1,5 +1,5 @@
/* Uncancelable versions of cancelable interfaces. Linux/NPTL version.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
@@ -26,13 +26,21 @@ extern int __close_nocancel (int) attribute_hidden;
extern int __read_nocancel (int, void *, size_t) attribute_hidden;
extern int __write_nocancel (int, const void *, size_t) attribute_hidden;
extern pid_t __waitpid_nocancel (pid_t, int *, int) attribute_hidden;
+extern int __openat_nocancel (int fd, const char *fname, int oflag,
+ mode_t mode) attribute_hidden;
+extern int __openat64_nocancel (int fd, const char *fname, int oflag,
+ mode_t mode) attribute_hidden;
#else
-#define __open_nocancel(name, ...) __open (name, __VA_ARGS__)
-#define __close_nocancel(fd) __close (fd)
-#define __read_nocancel(fd, buf, len) __read (fd, buf, len)
-#define __write_nocancel(fd, buf, len) __write (fd, buf, len)
-#define __waitpid_nocancel(pid, stat_loc, options) \
+# define __open_nocancel(name, ...) __open (name, __VA_ARGS__)
+# define __close_nocancel(fd) __close (fd)
+# define __read_nocancel(fd, buf, len) __read (fd, buf, len)
+# define __write_nocancel(fd, buf, len) __write (fd, buf, len)
+# define __waitpid_nocancel(pid, stat_loc, options) \
__waitpid (pid, stat_loc, options)
+# define __openat_nocancel(fd, fname, oflag, mode) \
+ openat (fd, fname, oflag, mode)
+# define __openat64_nocancel(fd, fname, oflag, mode) \
+ openat64 (fd, fname, oflag, mode)
#endif
/* Uncancelable open. */
@@ -41,6 +49,16 @@ extern pid_t __waitpid_nocancel (pid_t, int *, int) attribute_hidden;
#define open_not_cancel_2(name, flags) \
__open_nocancel (name, flags)
+/* Uncancelable openat. */
+#define openat_not_cancel(fd, fname, oflag, mode) \
+ __openat_nocancel (fd, fname, oflag, mode)
+#define openat_not_cancel_3(fd, fname, oflag) \
+ __openat_nocancel (fd, fname, oflag, 0)
+#define openat64_not_cancel(fd, fname, oflag, mode) \
+ __openat64_nocancel (fd, fname, oflag, mode)
+#define openat64_not_cancel_3(fd, fname, oflag) \
+ __openat64_nocancel (fd, fname, oflag, 0)
+
/* Uncancelable close. */
#define close_not_cancel(fd) \
__close_nocancel (fd)
diff --git a/sysdeps/generic/not-cancel.h b/sysdeps/generic/not-cancel.h
index 396e0421f9..427be6475f 100644
--- a/sysdeps/generic/not-cancel.h
+++ b/sysdeps/generic/not-cancel.h
@@ -1,5 +1,5 @@
/* Uncancelable versions of cancelable interfaces. Generic version.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
@@ -23,6 +23,14 @@
__libc_open (name, flags, mode)
#define open_not_cancel_2(name, flags) \
__libc_open (name, flags)
+#define openat_not_cancel(fd, name, flags, mode) \
+ __openat (fd, name, flags, mode)
+#define openat_not_cancel_3(fd, name, flags) \
+ __openat (fd, name, flags, 0)
+#define openat64_not_cancel(fd, name, flags, mode) \
+ __openat64 (fd, name, flags, mode)
+#define openat64_not_cancel_3(fd, name, flags) \
+ __openat64 (fd, name, flags, 0)
#define close_not_cancel(fd) \
__close (fd)
#define close_not_cancel_no_status(fd) \
diff --git a/sysdeps/mach/hurd/fdopendir.c b/sysdeps/mach/hurd/fdopendir.c
index 37dd4bc82e..c9caac30d7 100644
--- a/sysdeps/mach/hurd/fdopendir.c
+++ b/sysdeps/mach/hurd/fdopendir.c
@@ -1,5 +1,5 @@
/* Open a directory stream from a file descriptor. Hurd version.
- Copyright (C) 2005 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -27,7 +27,7 @@ DIR *_hurd_fd_opendir (struct hurd_fd *d); /* opendir.c */
/* Open a directory stream on FD. */
DIR *
-fdopendir (int fd)
+__fdopendir (int fd)
{
struct hurd_fd *d = _hurd_fd_get (fd);
@@ -54,3 +54,4 @@ fdopendir (int fd)
return _hurd_fd_opendir (d);
}
+weak_alias (__fdopendir, fdopendir)
diff --git a/sysdeps/unix/fdopendir.c b/sysdeps/unix/fdopendir.c
index 528f180fcb..565ce1ed72 100644
--- a/sysdeps/unix/fdopendir.c
+++ b/sysdeps/unix/fdopendir.c
@@ -25,7 +25,7 @@
DIR *
-fdopendir (int fd)
+__fdopendir (int fd)
{
struct stat64 statbuf;
@@ -49,3 +49,4 @@ fdopendir (int fd)
return __alloc_dir (fd, false, &statbuf);
}
+weak_alias (__fdopendir, fdopendir)
diff --git a/sysdeps/unix/sysv/linux/fxstatat.c b/sysdeps/unix/sysv/linux/fxstatat.c
index 77debf71d3..c1c416abd7 100644
--- a/sysdeps/unix/sysv/linux/fxstatat.c
+++ b/sysdeps/unix/sysv/linux/fxstatat.c
@@ -37,6 +37,42 @@
int
__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
{
+ int result;
+ INTERNAL_SYSCALL_DECL (err);
+#ifdef STAT_IS_KERNEL_STAT
+# define kst (*st)
+#else
+ struct kernel_stat kst;
+#endif
+
+#ifdef __NR_newfstatat
+# ifndef __ASSUME_ATFCTS
+ if (__have_atfcts >= 0)
+# endif
+ {
+ result = INTERNAL_SYSCALL (newfstatat, err, 4, fd, file, &kst, flag);
+# ifndef __ASSUME_ATFCTS
+ if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1)
+ && INTERNAL_SYSCALL_ERRNO (result, err) == ENOSYS)
+ __have_atfcts = -1;
+ else
+# endif
+ if (!__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1))
+ {
+#ifdef STAT_IS_KERNEL_STAT
+ return 0;
+#else
+ return __xstat_conv (vers, &kst, st);
+#endif
+ }
+ else
+ {
+ __set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
+ return -1;
+ }
+ }
+#endif
+
if (flag & ~AT_SYMLINK_NOFOLLOW)
{
__set_errno (EINVAL);
@@ -63,9 +99,6 @@ __fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
file = buf;
}
- int result;
- INTERNAL_SYSCALL_DECL (err);
-
if (vers == _STAT_VER_KERNEL)
{
if (flag & AT_SYMLINK_NOFOLLOW)
@@ -85,8 +118,6 @@ __fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
return -1;
}
#else
- struct kernel_stat kst;
-
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lstat, err, 2, CHECK_STRING (file),
__ptrvalue (&kst));
@@ -102,8 +133,9 @@ __fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
return -1;
}
+libc_hidden_def (__fxstatat)
#ifdef XSTAT_IS_XSTAT64
# undef __fxstatat64
strong_alias (__fxstatat, __fxstatat64);
-libc_hidden_ver (__fxstatat, __fxstatat64)
+libc_hidden_def (__fxstatat64)
#endif
diff --git a/sysdeps/unix/sysv/linux/fxstatat64.c b/sysdeps/unix/sysv/linux/fxstatat64.c
index 220d4abfcf..cb932b8e59 100644
--- a/sysdeps/unix/sysv/linux/fxstatat64.c
+++ b/sysdeps/unix/sysv/linux/fxstatat64.c
@@ -47,6 +47,38 @@ extern int __have_no_stat64;
int
__fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag)
{
+ if (__builtin_expect (vers != _STAT_VER_LINUX, 0))
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ int result;
+ INTERNAL_SYSCALL_DECL (err);
+
+#ifdef __NR_fstatat64
+# ifndef __ASSUME_ATFCTS
+ if (__have_atfcts >= 0)
+# endif
+ {
+ result = INTERNAL_SYSCALL (fstatat64, err, 4, fd, file, st, flag);
+# ifndef __ASSUME_ATFCTS
+ if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1)
+ && INTERNAL_SYSCALL_ERRNO (result, err) == ENOSYS)
+ __have_atfcts = -1;
+ else
+# endif