From 73a422dccc42cefb5d2867da0becbf9599be8ce8 Mon Sep 17 00:00:00 2001
From: ElectronSpark <820461770@qq.com>
Date: Fri, 21 Jan 2022 01:34:47 +0000
Subject: [PATCH 1/2] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=20getrandom=20=E7=B3=BB?=
 =?UTF-8?q?=E7=BB=9F=E8=B0=83=E7=94=A8=20python=20=E9=9C=80=E8=A6=81?=
 =?UTF-8?q?=E8=BF=99=E4=B8=AA=E7=B3=BB=E7=BB=9F=E8=B0=83=E7=94=A8?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/lwp/lwp_syscall.c | 57 ++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/components/lwp/lwp_syscall.c b/components/lwp/lwp_syscall.c
index 18013d0c92..ce01978163 100644
--- a/components/lwp/lwp_syscall.c
+++ b/components/lwp/lwp_syscall.c
@@ -57,6 +57,8 @@
 #include <tty.h>
 #include "lwp_ipc_internal.h"
 
+#include <sys/random.h>
+
 #define SET_ERRNO(no) rt_set_errno(-(no))
 #define GET_ERRNO() ((rt_get_errno() > 0) ? (-rt_get_errno()) : rt_get_errno())
 struct musl_sockaddr
@@ -3911,6 +3913,60 @@ int sys_setsid(void)
 
 int sys_cacheflush(void *addr, int len, int cache);
 
+int sys_getrandom(void *buf, size_t buflen, unsigned int flags)
+{
+    int ret = -1;
+    int count = 0;
+    void *kmem = RT_NULL;
+    rt_device_t rd_dev = RT_NULL;
+
+    if (flags & GRND_RANDOM)
+        rd_dev = rt_device_find("random");
+    else
+        rd_dev = rt_device_find("urandom");
+
+    if (rd_dev == RT_NULL)
+    {
+        return -EFAULT;
+    }
+    
+    if (rt_device_open(rd_dev, RT_DEVICE_OFLAG_RDONLY) != RT_EOK)
+    {
+        return -EFAULT;
+    }
+
+    if (!lwp_user_accessable(buf, buflen))
+    {
+        rt_device_close(rd_dev);
+        return -EFAULT;
+    }
+
+    kmem = kmem_get(buflen);
+    if (!kmem)
+    {
+        rt_device_close(rd_dev);
+        return -ENOMEM;
+    }
+
+    while (count < buflen)
+    {
+        ret = rt_device_read(rd_dev, count, kmem + count, buflen - count);
+        if (ret <= 0)
+            break;
+        count += ret;
+    }
+    rt_device_close(rd_dev);
+
+    ret = count;
+    if (count > 0)
+    {
+        ret = lwp_put_to_user(buf, kmem, count);
+    }
+    kmem_put(kmem);
+
+    return ret;
+}
+
 const static void* func_table[] =
 {
     (void *)sys_exit,            /* 01 */
@@ -4095,6 +4151,7 @@ const static void* func_table[] =
     (void *)sys_getrlimit,
     (void *)sys_setrlimit,
     (void *)sys_setsid,
+    (void *)sys_getrandom,
 };
 
 const void *lwp_get_sys_api(rt_uint32_t number)
-- 
Gitee


From 4b905cfaa067adef547a764e5a0b74d294d0fc4e Mon Sep 17 00:00:00 2001
From: ElectronSpark <820461770@qq.com>
Date: Sat, 22 Jan 2022 03:27:59 +0000
Subject: [PATCH 2/2] =?UTF-8?q?update=20components/lwp/lwp=5Fsyscall.c.=20?=
 =?UTF-8?q?=E5=B0=86=20sys/random.h=20=E4=B8=AD=E6=89=80=E9=9C=80=E8=A6=81?=
 =?UTF-8?q?=E7=9A=84=E5=AE=8F=E5=AE=9A=E4=B9=89=E8=BF=9B=E6=9D=A5?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/lwp/lwp_syscall.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/components/lwp/lwp_syscall.c b/components/lwp/lwp_syscall.c
index ce01978163..2457dd698e 100644
--- a/components/lwp/lwp_syscall.c
+++ b/components/lwp/lwp_syscall.c
@@ -57,7 +57,13 @@
 #include <tty.h>
 #include "lwp_ipc_internal.h"
 
-#include <sys/random.h>
+#ifndef GRND_NONBLOCK
+#define GRND_NONBLOCK	0x0001
+#endif /* GRND_NONBLOCK */
+
+#ifndef GRND_RANDOM
+#define GRND_RANDOM	0x0002
+#endif /*GRND_RANDOM */
 
 #define SET_ERRNO(no) rt_set_errno(-(no))
 #define GET_ERRNO() ((rt_get_errno() > 0) ? (-rt_get_errno()) : rt_get_errno())
-- 
Gitee