[Qemu-devel] [PATCH 20/32] linux-user: Fix stat64 syscall for SPARC64

[Michael Roth <mdroth@linux.vnet.ibm.com>]

From: Stefan Weil <sw@weilnetz.de>

Some targets use a stat64 structure for the stat64 syscall while others
use a stat structure. SPARC64 used the wrong kind.

Instead of extending the conditional compilation in syscall.c, now a
macro TARGET_HAS_STRUCT_STAT64 is defined whenever a target has a
target_stat64.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Erik de Castro Lopo <erikd@mega-nerd.com>
(cherry picked from commit 20d155bc902f41c5b354937e730ad85b43614ae9)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 linux-user/syscall.c      |    6 +++---
 linux-user/syscall_defs.h |   14 ++++++++++++++
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index f986548..c510975 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4764,10 +4764,10 @@ static inline abi_long host_to_target_stat64(void *cpu_env,
     } else
 #endif
     {
-#if TARGET_ABI_BITS == 64 && !defined(TARGET_ALPHA)
-        struct target_stat *target_st;
-#else
+#if defined(TARGET_HAS_STRUCT_STAT64)
         struct target_stat64 *target_st;
+#else
+        struct target_stat *target_st;
 #endif
 
         if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 086fbff..dd0d5a9 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -1165,6 +1165,7 @@ struct target_stat {
 /* This matches struct stat64 in glibc2.1, hence the absolutely
  * insane amounts of padding around dev_t's.
  */
+#define TARGET_HAS_STRUCT_STAT64
 struct target_stat64 {
 	unsigned short	st_dev;
 	unsigned char	__pad0[10];
@@ -1200,6 +1201,7 @@ struct target_stat64 {
 } QEMU_PACKED;
 
 #ifdef TARGET_ARM
+#define TARGET_HAS_STRUCT_STAT64
 struct target_eabi_stat64 {
         unsigned long long st_dev;
         unsigned int    __pad1;
@@ -1249,6 +1251,7 @@ struct target_stat {
 	abi_ulong	__unused4[2];
 };
 
+#define TARGET_HAS_STRUCT_STAT64
 struct target_stat64 {
 	unsigned char	__pad0[6];
 	unsigned short	st_dev;
@@ -1304,6 +1307,7 @@ struct target_stat {
 	abi_ulong	__unused4[2];
 };
 
+#define TARGET_HAS_STRUCT_STAT64
 struct target_stat64 {
 	unsigned char	__pad0[6];
 	unsigned short	st_dev;
@@ -1371,6 +1375,8 @@ struct target_stat {
 #endif
 };
 
+#if !defined(TARGET_PPC64) || defined(TARGET_ABI32)
+#define TARGET_HAS_STRUCT_STAT64
 struct QEMU_PACKED target_stat64 {
 	unsigned long long st_dev;
         unsigned long long st_ino;
@@ -1393,6 +1399,7 @@ struct QEMU_PACKED target_stat64 {
         unsigned int   __unused4;
         unsigned int   __unused5;
 };
+#endif
 
 #elif defined(TARGET_MICROBLAZE)
 
@@ -1418,6 +1425,7 @@ struct target_stat {
 };
 
 /* FIXME: Microblaze no-mmu user-space has a difference stat64 layout...  */
+#define TARGET_HAS_STRUCT_STAT64
 struct QEMU_PACKED target_stat64 {
 	uint64_t st_dev;
 #define TARGET_STAT64_HAS_BROKEN_ST_INO 1
@@ -1473,6 +1481,7 @@ struct target_stat {
 /* This matches struct stat64 in glibc2.1, hence the absolutely
  * insane amounts of padding around dev_t's.
  */
+#define TARGET_HAS_STRUCT_STAT64
 struct target_stat64 {
 	unsigned long long	st_dev;
 	unsigned char	__pad1[2];
@@ -1581,6 +1590,7 @@ struct target_stat {
  * struct stat of the 64-bit kernel.
  */
 
+#define TARGET_HAS_STRUCT_STAT64
 struct target_stat64 {
 	unsigned int	st_dev;
 	unsigned int	st_pad0[3];	/* Reserved for st_dev expansion  */
@@ -1652,6 +1662,7 @@ struct target_stat {
  * struct stat of the 64-bit kernel.
  */
 
+#define TARGET_HAS_STRUCT_STAT64
 struct target_stat64 {
 	abi_ulong	st_dev;
 	abi_ulong	st_pad0[3];	/* Reserved for st_dev expansion  */
@@ -1708,6 +1719,7 @@ struct target_stat {
        unsigned int    st_gen;
 };
 
+#define TARGET_HAS_STRUCT_STAT64
 struct target_stat64 {
        abi_ulong    st_dev;
        abi_ulong    st_ino;
@@ -1757,6 +1769,7 @@ struct target_stat {
 /* This matches struct stat64 in glibc2.1, hence the absolutely
  * insane amounts of padding around dev_t's.
  */
+#define TARGET_HAS_STRUCT_STAT64
 struct QEMU_PACKED target_stat64 {
 	unsigned long long	st_dev;
 	unsigned char	__pad0[4];
@@ -1862,6 +1875,7 @@ struct target_stat {
     unsigned int __unused5;
 };
 
+#define TARGET_HAS_STRUCT_STAT64
 struct target_stat64 {
     uint64_t st_dev;
     uint64_t st_ino;
-- 
1.7.9.5