[Qemu-devel] [PULL for-2.0 3/7] linux-user: implement F_[GS]ETOWN_EX

[riku.voipio@linaro.org]

From: Andreas Schwab <schwab@suse.de>

F_GETOWN is replaced by F_GETOWN_EX inside the glibc fcntl wrapper

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
---
 linux-user/syscall.c      | 36 ++++++++++++++++++++++++++++++++++++
 linux-user/syscall_defs.h |  7 +++++++
 2 files changed, 43 insertions(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index b5eadb1..b8086b8 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4421,6 +4421,14 @@ static int target_to_host_fcntl_cmd(int cmd)
 #endif
         case TARGET_F_NOTIFY:
             return F_NOTIFY;
+#ifdef F_GETOWN_EX
+	case TARGET_F_GETOWN_EX:
+	    return F_GETOWN_EX;
+#endif
+#ifdef F_SETOWN_EX
+	case TARGET_F_SETOWN_EX:
+	    return F_SETOWN_EX;
+#endif
 	default:
             return -TARGET_EINVAL;
     }
@@ -4443,6 +4451,10 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
     struct target_flock *target_fl;
     struct flock64 fl64;
     struct target_flock64 *target_fl64;
+#ifdef F_GETOWN_EX
+    struct f_owner_ex fox;
+    struct target_f_owner_ex *target_fox;
+#endif
     abi_long ret;
     int host_cmd = target_to_host_fcntl_cmd(cmd);
 
@@ -4536,6 +4548,30 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
         ret = get_errno(fcntl(fd, host_cmd, target_to_host_bitmask(arg, fcntl_flags_tbl)));
         break;
 
+#ifdef F_GETOWN_EX
+    case TARGET_F_GETOWN_EX:
+        ret = get_errno(fcntl(fd, host_cmd, &fox));
+        if (ret >= 0) {
+            if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
+                return -TARGET_EFAULT;
+            target_fox->type = tswap32(fox.type);
+            target_fox->pid = tswap32(fox.pid);
+            unlock_user_struct(target_fox, arg, 1);
+        }
+        break;
+#endif
+
+#ifdef F_SETOWN_EX
+    case TARGET_F_SETOWN_EX:
+        if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
+            return -TARGET_EFAULT;
+        fox.type = tswap32(target_fox->type);
+        fox.pid = tswap32(target_fox->pid);
+        unlock_user_struct(target_fox, arg, 0);
+        ret = get_errno(fcntl(fd, host_cmd, &fox));
+        break;
+#endif
+
     case TARGET_F_SETOWN:
     case TARGET_F_GETOWN:
     case TARGET_F_SETSIG:
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 732c9e3..2a7d1db 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -2123,6 +2123,8 @@ struct target_statfs64 {
 #define TARGET_F_SETOWN        8       /*  for sockets. */
 #define TARGET_F_GETOWN        9       /*  for sockets. */
 #endif
+#define TARGET_F_SETOWN_EX     15
+#define TARGET_F_GETOWN_EX     16
 
 #ifndef TARGET_F_RDLCK
 #define TARGET_F_RDLCK         0
@@ -2305,6 +2307,11 @@ struct target_eabi_flock64 {
 } QEMU_PACKED;
 #endif
 
+struct target_f_owner_ex {
+        int type;	/* Owner type of ID.  */
+        int pid;	/* ID of owner.  */
+};
+
 /* soundcard defines */
 /* XXX: convert them all to arch indepedent entries */
 #define TARGET_SNDCTL_COPR_HALT           TARGET_IOWR('C',  7, int);
-- 
1.8.1.2