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[Qemu-devel] [PATCH 01/10] Fix fstatat64()/newfstatat() syscall implemen
From: |
riku . voipio |
Subject: |
[Qemu-devel] [PATCH 01/10] Fix fstatat64()/newfstatat() syscall implementation |
Date: |
Sun, 5 Apr 2009 23:59:17 +0300 |
From: Kirill A. Shutemov <address@hidden>
There are two different syscall names for the same goal.
On systems with sizeof(long) == 64 it calls newfstatat.
On systems with sizeof(long) == 32 it calls fstatat64.
From: Kirill A. Shutemov <address@hidden>
Signed-off-by: Kirill A. Shutemov <address@hidden>
Signed-off-by: Riku Voipio <address@hidden>
---
linux-user/syscall.c | 29 +++++++++++++++++++++++++----
1 files changed, 25 insertions(+), 4 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 226ee6c..16cf89c 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -169,6 +169,7 @@ static type name (type1 arg1,type2 arg2,type3 arg3,type4
arg4,type5 arg5, \
#define __NR_sys_linkat __NR_linkat
#define __NR_sys_mkdirat __NR_mkdirat
#define __NR_sys_mknodat __NR_mknodat
+#define __NR_sys_newfstatat __NR_newfstatat
#define __NR_sys_openat __NR_openat
#define __NR_sys_readlinkat __NR_readlinkat
#define __NR_sys_renameat __NR_renameat
@@ -209,7 +210,8 @@ _syscall4(int,sys_fchmodat,int,dirfd,const char *,pathname,
_syscall5(int,sys_fchownat,int,dirfd,const char *,pathname,
uid_t,owner,gid_t,group,int,flags)
#endif
-#if defined(TARGET_NR_fstatat64) && defined(__NR_fstatat64)
+#if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) && \
+ defined(__NR_fstatat64)
_syscall4(int,sys_fstatat64,int,dirfd,const char *,pathname,
struct stat *,buf,int,flags)
#endif
@@ -240,6 +242,11 @@ _syscall3(int,sys_mkdirat,int,dirfd,const char
*,pathname,mode_t,mode)
_syscall4(int,sys_mknodat,int,dirfd,const char *,pathname,
mode_t,mode,dev_t,dev)
#endif
+#if (defined(TARGET_NR_newfstatat) || defined(TARGET_NR_fstatat64) ) && \
+ defined(__NR_newfstatat)
+_syscall4(int,sys_newfstatat,int,dirfd,const char *,pathname,
+ struct stat *,buf,int,flags)
+#endif
#if defined(TARGET_NR_openat) && defined(__NR_openat)
_syscall4(int,sys_openat,int,dirfd,const char *,pathname,int,flags,mode_t,mode)
#endif
@@ -3280,7 +3287,7 @@ static inline abi_long host_to_target_timespec(abi_ulong
target_addr,
return 0;
}
-#ifdef TARGET_NR_stat64
+#if defined(TARGET_NR_stat64) || defined(TARGET_NR_newfstatat)
static inline abi_long host_to_target_stat64(void *cpu_env,
abi_ulong target_addr,
struct stat *host_st)
@@ -3312,11 +3319,15 @@ static inline abi_long host_to_target_stat64(void
*cpu_env,
} else
#endif
{
+#if TARGET_LONG_BITS == 64
+ struct target_stat *target_st;
+#else
struct target_stat64 *target_st;
+#endif
if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
return -TARGET_EFAULT;
- memset(target_st, 0, sizeof(struct target_stat64));
+ memset(target_st, 0, sizeof(*target_st));
__put_user(host_st->st_dev, &target_st->st_dev);
__put_user(host_st->st_ino, &target_st->st_ino);
#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
@@ -5459,11 +5470,21 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
ret = host_to_target_stat64(cpu_env, arg2, &st);
break;
#endif
-#if defined(TARGET_NR_fstatat64) && defined(__NR_fstatat64)
+#if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) && \
+ (defined(__NR_fstatat64) || defined(__NR_newfstatat))
+#ifdef TARGET_NR_fstatat64
case TARGET_NR_fstatat64:
+#endif
+#ifdef TARGET_NR_newfstatat
+ case TARGET_NR_newfstatat:
+#endif
if (!(p = lock_user_string(arg2)))
goto efault;
+#ifdef __NR_fstatat64
ret = get_errno(sys_fstatat64(arg1, path(p), &st, arg4));
+#else
+ ret = get_errno(sys_newfstatat(arg1, path(p), &st, arg4));
+#endif
if (!is_error(ret))
ret = host_to_target_stat64(cpu_env, arg3, &st);
break;
--
1.6.2.1
- [Qemu-devel] [PATCH 00/10] misc userland patches [v2], riku . voipio, 2009/04/05
- [Qemu-devel] [PATCH 01/10] Fix fstatat64()/newfstatat() syscall implementation,
riku . voipio <=
- [Qemu-devel] [PATCH 02/10] Rewrite mmap_find_vma() to work fine on 64-bit hosts with 32-bit targets, riku . voipio, 2009/04/05
- [Qemu-devel] [PATCH 06/10] Add support for passing contents of argv0, riku . voipio, 2009/04/05
- [Qemu-devel] [PATCH 05/10] Added posix message queue syscalls except mq_notify, riku . voipio, 2009/04/05
- [Qemu-devel] [PATCH 09/10] Prefer glibc over direct syscalls, riku . voipio, 2009/04/05
- [Qemu-devel] [PATCH 10/10] linux-user: Proper exit code for uncaught signals, riku . voipio, 2009/04/05