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From 656167d89112171b2b7672676dc413c676a186f5 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Sun, 06 Sep 2009 16:12:12 +0000
Subject: fstatat: fix up behavior on 32/64 bit hosts
The fstatat() syscall is a little funky in that it sometimes changes name
between 32 and 64 bit hosts, but it should always operate on a 64bit stat
structure. So for the fstatat() function, make sure we convert it from a
64bit kstat to a 32bit stat.
Along these lines, we need to restore the __xstat32_conv() function.
Reported-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
diff --git a/libc/sysdeps/linux/common/fstatat.c b/libc/sysdeps/linux/common/fstatat.c
index 149c189..33daa7c 100644
--- a/libc/sysdeps/linux/common/fstatat.c
+++ b/libc/sysdeps/linux/common/fstatat.c
@@ -10,15 +10,20 @@
#include <sys/stat.h>
#include "xstatconv.h"
+/* 64bit ports tend to favor newfstatat() */
+#ifdef __NR_newfstatat
+# define __NR_fstatat64 __NR_newfstatat
+#endif
+
#ifdef __NR_fstatat64
int fstatat(int fd, const char *file, struct stat *buf, int flag)
{
int ret;
- struct kernel_stat kbuf;
+ struct kernel_stat64 kbuf;
ret = INLINE_SYSCALL(fstatat64, 4, fd, file, &kbuf, flag);
if (ret == 0)
- __xstat_conv(&kbuf, buf);
+ __xstat32_conv(&kbuf, buf);
return ret;
}
diff --git a/libc/sysdeps/linux/common/fstatat64.c b/libc/sysdeps/linux/common/fstatat64.c
index 5ae1fad..95627af 100644
--- a/libc/sysdeps/linux/common/fstatat64.c
+++ b/libc/sysdeps/linux/common/fstatat64.c
@@ -12,6 +12,11 @@
#ifdef __UCLIBC_HAS_LFS__
+/* 64bit ports tend to favor newfstatat() */
+#ifdef __NR_newfstatat
+# define __NR_fstatat64 __NR_newfstatat
+#endif
+
#ifdef __NR_fstatat64
int fstatat64(int fd, const char *file, struct stat64 *buf, int flag)
{
diff --git a/libc/sysdeps/linux/common/xstatconv.c b/libc/sysdeps/linux/common/xstatconv.c
index 2a82458..deef392 100644
--- a/libc/sysdeps/linux/common/xstatconv.c
+++ b/libc/sysdeps/linux/common/xstatconv.c
@@ -44,6 +44,25 @@ void __xstat_conv(struct kernel_stat *kbuf, struct stat *buf)
buf->st_ctim = kbuf->st_ctim;
}
+void __xstat32_conv(struct kernel_stat64 *kbuf, struct stat *buf)
+{
+ /* Convert to current kernel version of `struct stat64'. */
+ memset(buf, 0x00, sizeof(*buf));
+ buf->st_dev = kbuf->st_dev;
+ buf->st_ino = kbuf->st_ino;
+ buf->st_mode = kbuf->st_mode;
+ buf->st_nlink = kbuf->st_nlink;
+ buf->st_uid = kbuf->st_uid;
+ buf->st_gid = kbuf->st_gid;
+ buf->st_rdev = kbuf->st_rdev;
+ buf->st_size = kbuf->st_size;
+ buf->st_blksize = kbuf->st_blksize;
+ buf->st_blocks = kbuf->st_blocks;
+ buf->st_atime = kbuf->st_atime;
+ buf->st_mtime = kbuf->st_mtime;
+ buf->st_ctime = kbuf->st_ctime;
+}
+
#ifdef __UCLIBC_HAS_LFS__
void __xstat64_conv(struct kernel_stat64 *kbuf, struct stat64 *buf)
diff --git a/libc/sysdeps/linux/common/xstatconv.h b/libc/sysdeps/linux/common/xstatconv.h
index 57c8bcb..7568da8 100644
--- a/libc/sysdeps/linux/common/xstatconv.h
+++ b/libc/sysdeps/linux/common/xstatconv.h
@@ -26,6 +26,7 @@
#include <bits/kernel_stat.h>
extern void __xstat_conv(struct kernel_stat *kbuf, struct stat *buf) attribute_hidden;
+extern void __xstat32_conv(struct kernel_stat64 *kbuf, struct stat *buf) attribute_hidden;
#if defined __UCLIBC_HAS_LFS__
extern void __xstat64_conv(struct kernel_stat64 *kbuf, struct stat64 *buf) attribute_hidden;
#endif
--
cgit v0.8.2.1
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