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https://github.com/libfuse/libfuse.git
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4e0aea6a96
Add new ->write_buf() method to low level interface. This allows passig a generic buffer, either containing a memory buffer or a file descriptor. This allows implementing zero copy writes. Add fuse_session_receive_buf() and fuse_session_process_buf() which may be used in event loop implementations to replace fuse_chan_recv() and fuse_session_process() respectively.
47 lines
943 B
C
47 lines
943 B
C
/*
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FUSE: Filesystem in Userspace
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Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu>
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This program can be distributed under the terms of the GNU LGPLv2.
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See the file COPYING.LIB
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*/
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#include "fuse_lowlevel.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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int fuse_session_loop(struct fuse_session *se)
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{
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int res = 0;
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struct fuse_chan *ch = fuse_session_next_chan(se, NULL);
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size_t bufsize = fuse_chan_bufsize(ch);
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char *buf = (char *) malloc(bufsize);
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if (!buf) {
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fprintf(stderr, "fuse: failed to allocate read buffer\n");
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return -1;
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}
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while (!fuse_session_exited(se)) {
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struct fuse_chan *tmpch = ch;
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struct fuse_buf fbuf = {
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.mem = buf,
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.size = bufsize,
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};
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res = fuse_session_receive_buf(se, &fbuf, &tmpch);
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if (res == -EINTR)
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continue;
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if (res <= 0)
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break;
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fuse_session_process_buf(se, &fbuf, tmpch);
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}
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free(buf);
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fuse_session_reset(se);
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return res < 0 ? -1 : 0;
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}
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