diff options
Diffstat (limited to 'components/libc/compilers/dlib/syscall_write.c')
| -rw-r--r-- | components/libc/compilers/dlib/syscall_write.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/components/libc/compilers/dlib/syscall_write.c b/components/libc/compilers/dlib/syscall_write.c index 85c0da22c3..ffee51882d 100644 --- a/components/libc/compilers/dlib/syscall_write.c +++ b/components/libc/compilers/dlib/syscall_write.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2006-2018, RT-Thread Development Team + * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * @@ -15,6 +15,10 @@ #include <yfuns.h> #include "libc.h" +#define DBG_TAG "dlib.syscall_write" +#define DBG_LVL DBG_INFO +#include <rtdbg.h> + #pragma module_name = "?__write" size_t __write(int handle, const unsigned char *buf, size_t len) @@ -30,19 +34,29 @@ size_t __write(int handle, const unsigned char *buf, size_t len) #else #ifdef RT_USING_POSIX - return libc_stdio_write((void*)buf, len); + if (libc_stdio_get_console() < 0) + { + LOG_W("Do not invoke standard output before initializing libc"); + return 0; + } + return write(STDOUT_FILENO, (void*)buf, len); #else rt_device_t console_device; console_device = rt_console_get_device(); - if (console_device != 0) rt_device_write(console_device, 0, buf, len); + if (console_device != 0) + { + rt_device_write(console_device, 0, buf, len); + } return len; #endif #endif } - - if (handle == _LLIO_STDIN) return _LLIO_ERROR; + else if (handle == _LLIO_STDIN) + { + return _LLIO_ERROR; + } #ifndef RT_USING_DFS return _LLIO_ERROR; |