diff options
| -rw-r--r-- | components/libc/compilers/armlibc/syscalls.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/components/libc/compilers/armlibc/syscalls.c b/components/libc/compilers/armlibc/syscalls.c index bef92599d6..2c53310771 100644 --- a/components/libc/compilers/armlibc/syscalls.c +++ b/components/libc/compilers/armlibc/syscalls.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2006-2021, RT-Thread Development Team + * Copyright (c) 2006-2022, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * @@ -226,6 +226,11 @@ int _sys_write(FILEHANDLE fh, const unsigned char *buf, unsigned len, int mode) size = write(fh, buf, len); if (size >= 0) { + /* + fflush doesn't have a good solution in Keil-MDK, + so it has to sync/flush when for each writen. + */ + fsync(fh); return len - size; /* success */ } else @@ -240,6 +245,18 @@ int _sys_write(FILEHANDLE fh, const unsigned char *buf, unsigned len, int mode) } /* + * Flush any OS buffers associated with fh, ensuring that the file + * is up to date on disk. Result is >=0 if OK, negative for an + * error. + * This function is deprecated. It is never called by any other library function, + * and you are not required to re-implement it if you are retargeting standard I/O (stdio). + */ +int _sys_ensure(FILEHANDLE fh) +{ + return fsync(fh); +} + +/* * Move the file position to a given offset from the file start. * Returns >=0 on success, <0 on failure. */ |