From 17a4d13ceac87df157106ef64b3dc7dc87a89d37 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@bsdimp.com>
Date: Thu, 16 Jun 2022 08:00:53 -0600
Subject: [PATCH] bsd-user: Implement chroot and flock

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 bsd-user/bsd-file.h           | 19 +++++++++++++++++++
 bsd-user/freebsd/os-syscall.c |  8 ++++++++
 2 files changed, 27 insertions(+)

diff --git a/bsd-user/bsd-file.h b/bsd-user/bsd-file.h
index a1c80428d9..c24054fed1 100644
--- a/bsd-user/bsd-file.h
+++ b/bsd-user/bsd-file.h
@@ -848,4 +848,23 @@ static abi_long do_bsd_fchflags(abi_long arg1, abi_long arg2)
     return get_errno(fchflags(arg1, arg2));
 }
 
+/* chroot(2) */
+static abi_long do_bsd_chroot(abi_long arg1)
+{
+    abi_long ret;
+    void *p;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(chroot(p)); /* XXX path(p)? */
+    UNLOCK_PATH(p, arg1);
+
+    return ret;
+}
+
+/* flock(2) */
+static abi_long do_bsd_flock(abi_long arg1, abi_long arg2)
+{
+    return get_errno(flock(arg1, arg2));
+}
+
 #endif /* BSD_FILE_H */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 06bc76a326..d252fb4073 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -459,6 +459,14 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
         ret = do_bsd_fchflags(arg1, arg2);
         break;
 
+    case TARGET_FREEBSD_NR_chroot: /* chroot(2) */
+        ret = do_bsd_chroot(arg1);
+        break;
+
+    case TARGET_FREEBSD_NR_flock: /* flock(2) */
+        ret = do_bsd_flock(arg1, arg2);
+        break;
+
     default:
         qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
         ret = -TARGET_ENOSYS;