hurd: Move {,f,l}xstat{,at} and xmknod{at} to compat symbols

We do not actually need them, so we can move their implementations
into the standard {,f,l}stat{,at} variants and only keep compatibility
wrappers.

26 files changed, 510 insertions, 219 deletions

diff --git a/include/sys/stat.h b/include/sys/stat.h
index 108cb0c9bf..b4c9344628 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -94,36 +94,5 @@ int __lxstat64 (int ver, const char *__filename, struct stat64 *__stat_buf);
 int __fxstatat64 (int ver, int __fildes, const char *__filename,
 		  struct stat64 *__stat_buf, int __flag);
 
-# ifdef NO_RTLD_HIDDEN
-/* These are still required for Hurd.  */
-libc_hidden_proto (__fxstat);
-libc_hidden_proto (__xstat);
-libc_hidden_proto (__lxstat);
-libc_hidden_proto (__fxstatat);
-#  if IS_IN (libc)
-hidden_proto (__fxstat64);
-hidden_proto (__xstat64);
-hidden_proto (__lxstat64);
-hidden_proto (__fxstatat64);
-#  endif
-libc_hidden_proto (__xmknod)
-libc_hidden_proto (__xmknodat)
-#  define stat(fname, buf) __xstat (_STAT_VER, fname, buf)
-#  define lstat(fname, buf)  __lxstat (_STAT_VER, fname, buf)
-#  define __lstat(fname, buf)  __lxstat (_STAT_VER, fname, buf)
-#  define lstat64(fname, buf)  __lxstat64 (_STAT_VER, fname, buf)
-#  define __lstat64(fname, buf)  __lxstat64 (_STAT_VER, fname, buf)
-#  define stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
-#  define __stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
-#  define fstat64(fd, buf) __fxstat64 (_STAT_VER, fd, buf)
-#  define __fstat64(fd, buf) __fxstat64 (_STAT_VER, fd, buf)
-#  define fstat(fd, buf) __fxstat (_STAT_VER, fd, buf)
-#  define __fstat(fd, buf) __fxstat (_STAT_VER, fd, buf)
-#  define __fstatat(dfd, fname, buf, flag) \
-    __fxstatat (_STAT_VER, dfd, fname, buf, flag)
-#  define __fstatat64(dfd, fname, buf, flag) \
-    __fxstatat64 (_STAT_VER, dfd, fname, buf, flag)
-# endif /* NO_RTLD_HIDDEN  */
-
 #endif
 #endif
diff --git a/sysdeps/mach/hurd/Versions b/sysdeps/mach/hurd/Versions
index c456f472c4..89dabd0485 100644
--- a/sysdeps/mach/hurd/Versions
+++ b/sysdeps/mach/hurd/Versions
@@ -18,6 +18,7 @@ libc {
     __read_nocancel; __pread64_nocancel;
     __write_nocancel;
     __libc_lock_self0; __getcwd;
+    __stat64;
 
     _dl_init_first;
     __close_nocancel_nostatus;
@@ -35,7 +36,7 @@ ld {
     # functions that must be shared with libc
     __close; __getpid;
     __mmap; __open; __read; __sbrk; __strtoul_internal;
-    __write; __writev; __xstat64; __fxstat64;
+    __write; __writev;
     _exit; _hurd_intr_rpc_mach_msg;
     abort;
   }
@@ -61,5 +62,6 @@ ld {
     __read_nocancel; __pread64_nocancel;
     __write_nocancel;
     __libc_lock_self0; __getcwd;
+    __stat64; __fstat64;
   }
 }
diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c
index 6b32d41c76..370495710e 100644
--- a/sysdeps/mach/hurd/dl-sysdep.c
+++ b/sysdeps/mach/hurd/dl-sysdep.c
@@ -545,31 +545,27 @@ __mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset)
   return (void *) mapaddr;
 }
 
-check_no_hidden(__fxstat64);
+check_no_hidden(__fstat64);
 int weak_function
-__fxstat64 (int vers, int fd, struct stat64 *buf)
+__fstat64 (int fd, struct stat64 *buf)
 {
   error_t err;
 
-  assert (vers == _STAT_VER);
-
   err = __io_stat ((mach_port_t) fd, buf);
   if (err)
     return __hurd_fail (err);
 
   return 0;
 }
-libc_hidden_def (__fxstat64)
+libc_hidden_def (__fstat64)
 
-check_no_hidden(__xstat64);
+check_no_hidden(__stat64);
 int weak_function
-__xstat64 (int vers, const char *file, struct stat64 *buf)
+__stat64 (const char *file, struct stat64 *buf)
 {
   error_t err;
   mach_port_t port;
 
-  assert (vers == _STAT_VER);
-
   err = open_file (file, 0, &port, buf);
   if (err)
     return __hurd_fail (err);
@@ -578,7 +574,7 @@ __xstat64 (int vers, const char *file, struct stat64 *buf)
 
   return 0;
 }
-libc_hidden_def (__xstat64)
+libc_hidden_def (__stat64)
 
 /* This function is called by the dynamic linker (rtld.c) to check
    whether debugging malloc is allowed even for SUID binaries.  This
diff --git a/sysdeps/mach/hurd/fstat.c b/sysdeps/mach/hurd/fstat.c
new file mode 100644
index 0000000000..2f752e2289
--- /dev/null
+++ b/sysdeps/mach/hurd/fstat.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 1992-2020 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+#include "statconv.c"
+
+/* Get information about the file descriptor FD in BUF.  */
+int
+__fstat (int fd, struct stat *buf)
+{
+  struct stat64 buf64;
+  return __fstat64 (fd, &buf64) ?: stat64_conv (buf, &buf64);
+}
+weak_alias (__fstat, fstat)
diff --git a/sysdeps/mach/hurd/fstat64.c b/sysdeps/mach/hurd/fstat64.c
new file mode 100644
index 0000000000..05c6c548ea
--- /dev/null
+++ b/sysdeps/mach/hurd/fstat64.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 2000-2020 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+
+/* Get information about the file descriptor FD in BUF.  */
+int
+__fstat64 (int fd, struct stat64 *buf)
+{
+  error_t err;
+
+  if (err = HURD_DPORT_USE (fd, __io_stat (port, buf)))
+    return __hurd_dfail (fd, err);
+
+  return 0;
+}
+hidden_def (__fstat64)
+weak_alias (__fstat64, fstat64)
diff --git a/sysdeps/mach/hurd/fstatat.c b/sysdeps/mach/hurd/fstatat.c
new file mode 100644
index 0000000000..6b6aba22ee
--- /dev/null
+++ b/sysdeps/mach/hurd/fstatat.c
@@ -0,0 +1,32 @@
+/* Get information about file named relative to open directory.  Hurd version.
+   Copyright (C) 2006-2020 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+#include "statconv.c"
+
+int
+__fstatat (int fd, const char *filename, struct stat *buf, int flag)
+{
+  struct stat64 buf64;
+  return (__fstatat64 (fd, filename, &buf64, flag)
+	  ?: stat64_conv (buf, &buf64));
+}
+weak_alias (__fstatat, fstatat)
diff --git a/sysdeps/mach/hurd/fstatat64.c b/sysdeps/mach/hurd/fstatat64.c
new file mode 100644
index 0000000000..69ccaa4e21
--- /dev/null
+++ b/sysdeps/mach/hurd/fstatat64.c
@@ -0,0 +1,43 @@
+/* Get information about file named relative to open directory.  Hurd version.
+   Copyright (C) 2006-2020 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+
+/* Get information about the file descriptor FD in BUF.  */
+int
+__fstatat64 (int fd, const char *filename, struct stat64 *buf, int flag)
+{
+  error_t err;
+  io_t port;
+
+  port = __file_name_lookup_at (fd, flag, filename, 0, 0);
+  if (port == MACH_PORT_NULL)
+    return -1;
+
+  err = __io_stat (port, buf);
+  __mach_port_deallocate (__mach_task_self (), port);
+
+  return __hurd_fail (err);
+}
+libc_hidden_def (__fstatat64)
+weak_alias (__fstatat64, fstatat64)
diff --git a/sysdeps/mach/hurd/fxstat.c b/sysdeps/mach/hurd/fxstat.c
index a403f5417f..3201bb8cf1 100644
--- a/sysdeps/mach/hurd/fxstat.c
+++ b/sysdeps/mach/hurd/fxstat.c
@@ -18,15 +18,20 @@
 #include <errno.h>
 #include <stddef.h>
 #include <sys/stat.h>
+#include <hurd.h>
+#include <shlib-compat.h>
 
-#include "xstatconv.c"
+#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_33)
 
 /* Get information about the file descriptor FD in BUF.  */
 int
 __fxstat (int vers, int fd, struct stat *buf)
 {
-  struct stat64 buf64;
-  return __fxstat64 (vers, fd, &buf64) ?: xstat64_conv (buf, &buf64);
+  if (vers != _STAT_VER)
+    return __hurd_fail (EINVAL);
+
+  return __fstat (fd, buf);
 }
-hidden_def (__fxstat)
 weak_alias (__fxstat, _fxstat)
+
+#endif
diff --git a/sysdeps/mach/hurd/fxstat64.c b/sysdeps/mach/hurd/fxstat64.c
index 12bc808593..6b404b296c 100644
--- a/sysdeps/mach/hurd/fxstat64.c
+++ b/sysdeps/mach/hurd/fxstat64.c
@@ -15,28 +15,22 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#ifndef RTLD_STAT64		/* dl-fxstat64.c, but we don't want it.  */
-
 #include <errno.h>
 #include <stddef.h>
 #include <sys/stat.h>
 #include <hurd.h>
-#include <hurd/fd.h>
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_33)
 
 /* Get information about the file descriptor FD in BUF.  */
 int
 __fxstat64 (int vers, int fd, struct stat64 *buf)
 {
-  error_t err;
-
   if (vers != _STAT_VER)
     return __hurd_fail (EINVAL);
 
-  if (err = HURD_DPORT_USE (fd, __io_stat (port, buf)))
-    return __hurd_dfail (fd, err);
-
-  return 0;
+  return __fstat64 (fd, buf);
 }
-hidden_def (__fxstat64)
 
 #endif
diff --git a/sysdeps/mach/hurd/fxstatat.c b/sysdeps/mach/hurd/fxstatat.c
index 48ae4b49ad..b71ab9fad5 100644
--- a/sysdeps/mach/hurd/fxstatat.c
+++ b/sysdeps/mach/hurd/fxstatat.c
@@ -19,14 +19,18 @@
 #include <errno.h>
 #include <stddef.h>
 #include <sys/stat.h>
+#include <hurd.h>
+#include <shlib-compat.h>
 
-#include "xstatconv.c"
+#if SHLIB_COMPAT(libc, GLIBC_2_4, GLIBC_2_33)
 
 int
 __fxstatat (int vers, int fd, const char *filename, struct stat *buf, int flag)
 {
-  struct stat64 buf64;
-  return (__fxstatat64 (vers, fd, filename, &buf64, flag)
-	  ?: xstat64_conv (buf, &buf64));
+  if (vers != _STAT_VER)
+    return __hurd_fail (EINVAL);
+
+  return __fstatat (fd, filename, buf, flag);
 }
-libc_hidden_def (__fxstatat)
+
+#endif
diff --git a/sysdeps/mach/hurd/fxstatat64.c b/sysdeps/mach/hurd/fxstatat64.c
index 8d22ff7ed0..f0c171f64c 100644
--- a/sysdeps/mach/hurd/fxstatat64.c
+++ b/sysdeps/mach/hurd/fxstatat64.c
@@ -21,26 +21,19 @@
 #include <stddef.h>
 #include <sys/stat.h>
 #include <hurd.h>
-#include <hurd/fd.h>
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT(libc, GLIBC_2_4, GLIBC_2_33)
 
 /* Get information about the file descriptor FD in BUF.  */
 int
 __fxstatat64 (int vers, int fd, const char *filename, struct stat64 *buf,
 	      int flag)
 {
-  error_t err;
-  io_t port;
-
   if (vers != _STAT_VER)
     return __hurd_fail (EINVAL);
 
-  port = __file_name_lookup_at (fd, flag, filename, 0, 0);
-  if (port == MACH_PORT_NULL)
-    return -1;
-
-  err = __io_stat (port, buf);
-  __mach_port_deallocate (__mach_task_self (), port);
-
-  return __hurd_fail (err);
+  return __fstatat64 (fd, filename, buf, flag);
 }
-libc_hidden_def (__fxstatat64)
+
+#endif
diff --git a/sysdeps/mach/hurd/i386/ld.abilist b/sysdeps/mach/hurd/i386/ld.abilist
index 0eaea9f66d..751664bcda 100644
--- a/sysdeps/mach/hurd/i386/ld.abilist
+++ b/sysdeps/mach/hurd/i386/ld.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.2.6 __close F
 GLIBC_2.2.6 __errno_location F
-GLIBC_2.2.6 __fxstat64 F
 GLIBC_2.2.6 __getpid F
 GLIBC_2.2.6 __libc_stack_end D 0x4
 GLIBC_2.2.6 __mmap F
@@ -11,7 +10,6 @@ GLIBC_2.2.6 __read F
 GLIBC_2.2.6 __sbrk F
 GLIBC_2.2.6 __write F
 GLIBC_2.2.6 __writev F
-GLIBC_2.2.6 __xstat64 F
 GLIBC_2.2.6 _dl_mcount F
 GLIBC_2.2.6 _hurd_intr_rpc_mach_msg F
 GLIBC_2.2.6 _r_debug D 0x14
diff --git a/sysdeps/mach/hurd/i386/localplt.data b/sysdeps/mach/hurd/i386/localplt.data
index abd8f31fac..94064ecbc5 100644
--- a/sysdeps/mach/hurd/i386/localplt.data
+++ b/sysdeps/mach/hurd/i386/localplt.data
@@ -30,8 +30,8 @@ ld.so: __write_nocancel
 ld.so: __writev
 ld.so: __libc_lseek64
 ld.so: __mmap
-ld.so: __fxstat64
-ld.so: __xstat64
+ld.so: __fstat64
+ld.so: __stat64
 ld.so: __access
 ld.so: __access_noerrno
 ld.so: __getpid
diff --git a/sysdeps/mach/hurd/lstat.c b/sysdeps/mach/hurd/lstat.c
new file mode 100644
index 0000000000..88bc0e4914
--- /dev/null
+++ b/sysdeps/mach/hurd/lstat.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 1992-2020 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/stat.h>
+#include <stddef.h>
+
+#include "statconv.c"
+
+int
+__lstat (const char *file, struct stat *buf)
+{
+  struct stat64 buf64;
+  return __lstat64 (file, &buf64) ?: stat64_conv (buf, &buf64);
+}
+weak_alias (__lstat, lstat)
diff --git a/sysdeps/mach/hurd/lstat64.c b/sysdeps/mach/hurd/lstat64.c
new file mode 100644
index 0000000000..5380458f69
--- /dev/null
+++ b/sysdeps/mach/hurd/lstat64.c
@@ -0,0 +1,41 @@
+/* Copyright (C) 2000-2020 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of