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libc: Skip close stdin/stdout/stderr in fclose

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Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao
2020-10-15 21:08:01 +08:00
committed by Brennan Ashton
parent b69c587dc9
commit 2b9282d5ee
1 changed files with 18 additions and 9 deletions
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libs/libc/stdio/lib_fclose.c
+18 -9
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@@ -81,6 +81,23 @@ int fclose(FAR FILE *stream)
if (stream) if (stream)
{ {
ret = OK;
/* If the stream was opened for writing, then flush the stream */
if ((stream->fs_oflags & O_WROK) != 0)
{
ret = lib_fflush(stream, true);
errcode = get_errno();
}
/* Skip close the builtin streams(stdin, stdout and stderr) */
if (stream == stdin || stream == stdout || stream == stderr)
{
goto done;
}
/* Remove FILE structure from the stream list */ /* Remove FILE structure from the stream list */
slist = nxsched_get_streams(); slist = nxsched_get_streams();
@@ -114,17 +131,8 @@ int fclose(FAR FILE *stream)
* file. * file.
*/ */
ret = OK;
if (stream->fs_fd >= 0) if (stream->fs_fd >= 0)
{ {
/* If the stream was opened for writing, then flush the stream */
if ((stream->fs_oflags & O_WROK) != 0)
{
ret = lib_fflush(stream, true);
errcode = get_errno();
}
/* Close the file descriptor and save the return status */ /* Close the file descriptor and save the return status */
status = close(stream->fs_fd); status = close(stream->fs_fd);
@@ -157,6 +165,7 @@ int fclose(FAR FILE *stream)
lib_free(stream); lib_free(stream);
} }
done:
/* On an error, reset the errno to the first error encountered and return /* On an error, reset the errno to the first error encountered and return
* EOF. * EOF.
*/ */