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stat64 on sparc64 failed to get correct major/minor dev
Description of problem:
The reported device major/minor is not correct, e.g: stat /dev/zero:
Reported: Device type: 0,10500000
Correct : Device type: 1,5
Steps to reproduce:
1. "stat /dev/zero" or "ls -l /dev/zero"
Additional information:
The problem is a missing padding into target_stat64 struct related to sparc64. Here patch to solve the issue (it also fixes some incorrect variables size):
```
--- qemu-20230327/linux-user/syscall_defs.h 2023-03-27 15:41:42.000000000 +0200
+++ qemu-20230327/linux-user/syscall_defs.h.new 2023-03-27 21:43:25.615115126 +0200
@@ -1450,7 +1450,7 @@ struct target_stat {
unsigned int st_dev;
abi_ulong st_ino;
unsigned int st_mode;
- unsigned int st_nlink;
+ short int st_nlink;
unsigned int st_uid;
unsigned int st_gid;
unsigned int st_rdev;
@@ -1465,8 +1465,7 @@ struct target_stat {
#define TARGET_HAS_STRUCT_STAT64
struct target_stat64 {
- unsigned char __pad0[6];
- unsigned short st_dev;
+ uint64_t st_dev;
uint64_t st_ino;
uint64_t st_nlink;
@@ -1476,14 +1475,13 @@ struct target_stat64 {
unsigned int st_uid;
unsigned int st_gid;
- unsigned char __pad2[6];
- unsigned short st_rdev;
+ unsigned int __pad0;
+ uint64_t st_rdev;
int64_t st_size;
int64_t st_blksize;
- unsigned char __pad4[4];
- unsigned int st_blocks;
+ int64_t st_blocks;
abi_ulong target_st_atime;
abi_ulong target_st_atime_nsec;
@@ -1522,8 +1520,7 @@ struct target_stat {
#define TARGET_HAS_STRUCT_STAT64
struct target_stat64 {
- unsigned char __pad0[6];
- unsigned short st_dev;
+ uint64_t st_dev;
uint64_t st_ino;
@@ -1533,8 +1530,7 @@ struct target_stat64 {
unsigned int st_uid;
unsigned int st_gid;
- unsigned char __pad2[6];
- unsigned short st_rdev;
+ uint64_t st_rdev;
unsigned char __pad3[8];
```
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