From: Warner Losh <imp@bsdimp.com>
Date: Mon, 31 Jan 2022 20:40:36 +0000 (-0700)
Subject: bsd-user/freebsd/os-syscall.c: unlock_iovec
X-Git-Tag: v7.1.0-rc0~66^2~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=883808d84895804a3a98e211001c3edf42355b66;p=thirdparty%2Fqemu.git

bsd-user/freebsd/os-syscall.c: unlock_iovec

Releases the references to the iovec created by lock_iovec.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 67851937a8f..52093d479d8 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -175,6 +175,20 @@ fail2:
     return NULL;
 }
 
+void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
+        int count, int copy)
+{
+    struct target_iovec *target_vec;
+
+    target_vec = lock_user(VERIFY_READ, target_addr,
+                           count * sizeof(struct target_iovec), 1);
+    if (target_vec) {
+        helper_unlock_iovec(target_vec, target_addr, vec, count, copy);
+    }
+
+    g_free(vec);
+}
+
 /*
  * do_syscall() should always have a single exit point at the end so that
  * actions, such as logging of syscall results, can be performed.  All errnos