61 lines
2.4 KiB
C
61 lines
2.4 KiB
C
//----------------------------------------------------------------------------//
|
|
// OS on Kaleid //
|
|
// //
|
|
// Desc: Buffer library //
|
|
// //
|
|
// //
|
|
// Copyright © 2018-2020 The OS/K Team //
|
|
// //
|
|
// This file is part of OS/K. //
|
|
// //
|
|
// OS/K is free software: you can redistribute it and/or modify //
|
|
// it under the terms of the GNU General Public License as published by //
|
|
// the Free Software Foundation, either version 3 of the License, or //
|
|
// any later version. //
|
|
// //
|
|
// OS/K is distributed in the hope that it will be useful, //
|
|
// but WITHOUT ANY WARRANTY//without even the implied warranty of //
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
|
// GNU General Public License for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
|
|
//----------------------------------------------------------------------------//
|
|
|
|
#include <libbuf.h>
|
|
|
|
//
|
|
// Erases buf's content
|
|
// Can be given as a flusher
|
|
//
|
|
error_t bemptybuf(Buffer_t *buf)
|
|
{
|
|
buf->wp = buf->rp = buf->buf;
|
|
buf->lastLF = 0;
|
|
|
|
return EOK;
|
|
}
|
|
|
|
//
|
|
// Flushes a buffer, returns EBADF when not possible
|
|
//
|
|
error_t BFlushBuf(Buffer_t *buf)
|
|
{
|
|
error_t rc;
|
|
|
|
if (!buf) return EINVAL;
|
|
if (buf->flags & (BF_EOF|BF_ERR)) {
|
|
return EENDF;
|
|
}
|
|
if (!buf->flusher) {
|
|
return EBADF;
|
|
}
|
|
|
|
ExAcquireLock(&buf->lock);
|
|
rc = buf->flusher(buf);
|
|
ExReleaseLock(&buf->lock);
|
|
|
|
return rc;
|
|
}
|
|
|