[PULL 34/51] bsd-user: Implement shm_rename(2) system call

[Warner Losh]

From: Kyle Evans <kevans@FreeBSD.org>

Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182709.4834-7-kariem.taha2.7@gmail.com>
---
 bsd-user/freebsd/os-misc.h    | 24 ++++++++++++++++++++++++
 bsd-user/freebsd/os-syscall.c |  6 ++++++
 2 files changed, 30 insertions(+)

diff --git a/bsd-user/freebsd/os-misc.h b/bsd-user/freebsd/os-misc.h
index d5e8b5484c8..71145764a4d 100644
--- a/bsd-user/freebsd/os-misc.h
+++ b/bsd-user/freebsd/os-misc.h
@@ -70,5 +70,29 @@ static inline abi_long do_freebsd_shm_open2(abi_ulong 
pathptr, abi_ulong flags,
 }
 #endif /* __FreeBSD_version >= 1300048 */
 
+#if defined(__FreeBSD_version) && __FreeBSD_version >= 1300049
+/* shm_rename(2) */
+static inline abi_long do_freebsd_shm_rename(abi_ulong fromptr, abi_ulong 
toptr,
+        abi_ulong flags)
+{
+    int ret;
+    void *ufrom, *uto;
+
+    ufrom = lock_user_string(fromptr);
+    if (ufrom == NULL) {
+        return -TARGET_EFAULT;
+    }
+    uto = lock_user_string(toptr);
+    if (uto == NULL) {
+        unlock_user(ufrom, fromptr, 0);
+        return -TARGET_EFAULT;
+    }
+    ret = get_errno(shm_rename(ufrom, uto, flags));
+    unlock_user(ufrom, fromptr, 0);
+    unlock_user(uto, toptr, 0);
+
+    return ret;
+}
+#endif /* __FreeBSD_version >= 1300049 */
 
 #endif /* OS_MISC_H */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 122e186b501..5fb42b2c218 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -807,6 +807,12 @@ static abi_long freebsd_syscall(void *cpu_env, int num, 
abi_long arg1,
         break;
 #endif
 
+#if defined(__FreeBSD_version) && __FreeBSD_version >= 1300049
+    case TARGET_FREEBSD_NR_shm_rename: /* shm_rename(2) */
+        ret = do_freebsd_shm_rename(arg1, arg2, arg3);
+        break;
+#endif
+
         /*
          * sys{ctl, arch, call}
          */
-- 
2.41.0