[Qemu-devel] [7050] linux-user: fix fstatat64()/newfstatat() syscall implementation

[Aurelien Jarno]

Revision: 7050
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=7050
Author:   aurel32
Date:     2009-04-08 23:07:05 +0000 (Wed, 08 Apr 2009)
Log Message:
-----------
linux-user: fix fstatat64()/newfstatat() syscall implementation

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.

Signed-off-by: Kirill A. Shutemov <address@hidden>
Signed-off-by: Riku Voipio <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>

Modified Paths:
--------------
    trunk/linux-user/syscall.c

Modified: trunk/linux-user/syscall.c
===================================================================
--- trunk/linux-user/syscall.c  2009-04-08 22:56:33 UTC (rev 7049)
+++ trunk/linux-user/syscall.c  2009-04-08 23:07:05 UTC (rev 7050)
@@ -169,6 +169,7 @@
 #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 @@
 _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 @@
 _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 @@
     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 @@
     } 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 @@
             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;