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glibc/glibc-revert-mknod-compat.p...

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From 9036019b09f0e6fd9d66721f4d6bbc856bb27da2 Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Wed, 21 Oct 2020 14:51:39 +0530
Subject: [PATCH] Revert "linux: Move xmknod{at} to compat symbols"
This reverts commit 81b83ff61f95f30ad53d6075247af0ea61a0b16e.
---
include/sys/stat.h | 4 +--
sysdeps/mach/hurd/xmknod.c | 17 +++------
sysdeps/mach/hurd/xmknodat.c | 12 +------
sysdeps/unix/sysv/linux/mknod.c | 28 ---------------
sysdeps/unix/sysv/linux/mknodat.c | 35 -------------------
.../unix/sysv/linux/riscv/rv32/libc.abilist | 2 ++
sysdeps/unix/sysv/linux/xmknod.c | 20 +++++++----
sysdeps/unix/sysv/linux/xmknodat.c | 23 ++++++++----
8 files changed, 40 insertions(+), 101 deletions(-)
delete mode 100644 sysdeps/unix/sysv/linux/mknod.c
delete mode 100644 sysdeps/unix/sysv/linux/mknodat.c
diff --git a/include/sys/stat.h b/include/sys/stat.h
index 108cb0c9bf..9a4a8f62cc 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -79,8 +79,10 @@ libc_hidden_proto (__mknod);
extern int __xmknod (int __ver, const char *__path, __mode_t __mode,
__dev_t *__dev);
+libc_hidden_proto (__xmknod)
extern int __xmknodat (int __ver, int __fd, const char *__path,
__mode_t __mode, __dev_t *__dev);
+libc_hidden_proto (__xmknodat)
int __fxstat (int __ver, int __fildes, struct stat *__stat_buf);
int __xstat (int __ver, const char *__filename,
@@ -106,8 +108,6 @@ 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)
diff --git a/sysdeps/mach/hurd/xmknod.c b/sysdeps/mach/hurd/xmknod.c
index a1b5af086d..0ab4f1b719 100644
--- a/sysdeps/mach/hurd/xmknod.c
+++ b/sysdeps/mach/hurd/xmknod.c
@@ -15,9 +15,12 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <sys/stat.h>
+#include <errno.h>
#include <fcntl.h>
-#include <shlib-compat.h>
+#include <stddef.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
/* Create a device file named FILE_NAME, with permission and special bits MODE
and device number DEV (which can be constructed from major and minor
@@ -28,13 +31,3 @@ __xmknod (int vers, const char *file_name, mode_t mode, dev_t *dev)
return __xmknodat (vers, AT_FDCWD, file_name, mode, dev);
}
libc_hidden_def (__xmknod)
-
-#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_33)
-int
-__xmknod_compat (int vers, const char *file_name, mode_t mode, dev_t *dev)
-{
- return __xmknod (vers, file_name, mode, dev);
-}
-
-compat_symbol (libc, __xmknod_compat, __xmknod, GLIBC_2_0);
-#endif
diff --git a/sysdeps/mach/hurd/xmknodat.c b/sysdeps/mach/hurd/xmknodat.c
index 90724694d5..4239d1ea91 100644
--- a/sysdeps/mach/hurd/xmknodat.c
+++ b/sysdeps/mach/hurd/xmknodat.c
@@ -26,7 +26,6 @@
#include <string.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
-#include <shlib-compat.h>
/* Create a device file named PATH relative to FD, with permission and
special bits MODE and device number DEV (which can be constructed
@@ -117,14 +116,5 @@ __xmknodat (int vers, int fd, const char *path, mode_t mode, dev_t *dev)
return __hurd_fail (err);
return 0;
}
-libc_hidden_def (__xmknodat)
-
-#if SHLIB_COMPAT(libc, GLIBC_2_4, GLIBC_2_33)
-int
-__xmknodat_compat (int vers, int fd, const char *path, mode_t mode, dev_t *dev)
-{
- return __xmknodat (vers, fd, path, mode, dev);
-}
-compat_symbol (libc, __xmknodat_compat, __xmknodat, GLIBC_2_4);
-#endif
+libc_hidden_def (__xmknodat)
diff --git a/sysdeps/unix/sysv/linux/mknod.c b/sysdeps/unix/sysv/linux/mknod.c
deleted file mode 100644
index 7e290ddc8b..0000000000
--- a/sysdeps/unix/sysv/linux/mknod.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/* Create a special or ordinary file. Linux version.
- Copyright (C) 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 <sys/stat.h>
-#include <fcntl.h>
-
-int
-__mknod (const char *path, mode_t mode, dev_t dev)
-{
- return __mknodat (AT_FDCWD, path, mode, dev);
-}
-libc_hidden_def (__mknod)
-weak_alias (__mknod, mknod)
diff --git a/sysdeps/unix/sysv/linux/mknodat.c b/sysdeps/unix/sysv/linux/mknodat.c
deleted file mode 100644
index fdb8f1951a..0000000000
--- a/sysdeps/unix/sysv/linux/mknodat.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Create a special or ordinary file. Linux version.
- Copyright (C) 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 <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-
-int
-__mknodat (int fd, const char *path, mode_t mode, dev_t dev)
-{
- /* The user-exported dev_t is 64-bit while the kernel interface is
- 32-bit. */
- unsigned int k_dev = dev;
- if (k_dev != dev)
- return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
-
- return INLINE_SYSCALL_CALL (mknodat, fd, path, mode, k_dev);
-}
-libc_hidden_def (__mknodat)
-weak_alias (__mknodat, mknodat)
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index 365a6b17cf..d984c02492 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -484,6 +484,8 @@ GLIBC_2.33 __wprintf_chk F
GLIBC_2.33 __write F
GLIBC_2.33 __wuflow F
GLIBC_2.33 __wunderflow F
+GLIBC_2.33 __xmknod F
+GLIBC_2.33 __xmknodat F
GLIBC_2.33 __xpg_basename F
GLIBC_2.33 __xpg_sigpause F
GLIBC_2.33 __xpg_strerror_r F
diff --git a/sysdeps/unix/sysv/linux/xmknod.c b/sysdeps/unix/sysv/linux/xmknod.c
index 82bb0bd953..42809d4c57 100644
--- a/sysdeps/unix/sysv/linux/xmknod.c
+++ b/sysdeps/unix/sysv/linux/xmknod.c
@@ -17,23 +17,29 @@
<https://www.gnu.org/licenses/>. */
#include <sys/stat.h>
+#include <sys/sysmacros.h>
#include <fcntl.h>
-#include <errno.h>
-#include <shlib-compat.h>
+#include <sysdep.h>
-#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_33)
/* Create a device file named PATH, with permission and special bits MODE
and device number DEV (which can be constructed from major and minor
device numbers with the `makedev' macro above). */
int
-attribute_compat_text_section
__xmknod (int vers, const char *path, mode_t mode, dev_t *dev)
{
+ unsigned long long int k_dev;
+
if (vers != _MKNOD_VER)
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
- return __mknodat (AT_FDCWD, path, mode, *dev);
+ /* We must convert the value to dev_t type used by the kernel. */
+ k_dev = (*dev) & ((1ULL << 32) - 1);
+ if (k_dev != *dev)
+ return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+
+ return INLINE_SYSCALL_CALL (mknodat, AT_FDCWD, path, mode,
+ (unsigned int) k_dev);
}
-compat_symbol (libc, __xmknod, __xmknod, GLIBC_2_0);
-#endif
+weak_alias (__xmknod, _xmknod)
+libc_hidden_def (__xmknod)
diff --git a/sysdeps/unix/sysv/linux/xmknodat.c b/sysdeps/unix/sysv/linux/xmknodat.c
index fae3fe54d1..5640a499aa 100644
--- a/sysdeps/unix/sysv/linux/xmknodat.c
+++ b/sysdeps/unix/sysv/linux/xmknodat.c
@@ -15,11 +15,18 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <sys/stat.h>
#include <errno.h>
-#include <shlib-compat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+
-#if SHLIB_COMPAT(libc, GLIBC_2_4, GLIBC_2_33)
/* Create a device file named PATH relative to FD, with permission and
special bits MODE and device number DEV (which can be constructed
from major and minor device numbers with the `makedev' macro above). */
@@ -29,8 +36,12 @@ __xmknodat (int vers, int fd, const char *file, mode_t mode, dev_t *dev)
if (vers != _MKNOD_VER)
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
- return __mknodat (fd, file, mode, *dev);
+ /* We must convert the value to dev_t type used by the kernel. */
+ unsigned long long int k_dev = (*dev) & ((1ULL << 32) - 1);
+ if (k_dev != *dev)
+ return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+
+ return INLINE_SYSCALL (mknodat, 4, fd, file, mode, (unsigned int) k_dev);
}
-compat_symbol (libc, __xmknodat, __xmknodat, GLIBC_2_4);
-#endif
+libc_hidden_def (__xmknodat)
--
2.26.2
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