63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
#include "first.h"
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#include "network_backends.h"
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#if defined(USE_FREEBSD_SENDFILE)
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#include "network.h"
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#include "log.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <errno.h>
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#include <string.h>
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int network_write_file_chunk_sendfile(server *srv, connection *con, int fd, chunkqueue *cq, off_t *p_max_bytes) {
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chunk* const c = cq->first;
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off_t offset, written = 0;
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off_t toSend;
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int r;
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force_assert(NULL != c);
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force_assert(FILE_CHUNK == c->type);
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force_assert(c->offset >= 0 && c->offset <= c->file.length);
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offset = c->file.start + c->offset;
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toSend = c->file.length - c->offset;
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if (toSend > *p_max_bytes) toSend = *p_max_bytes;
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if (0 == toSend) {
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chunkqueue_remove_finished_chunks(cq);
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return 0;
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}
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if (0 != network_open_file_chunk(srv, con, cq)) return -1;
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/* FreeBSD sendfile() */
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if (-1 == (r = sendfile(c->file.fd, fd, offset, toSend, NULL, &written, 0))) {
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switch(errno) {
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case EAGAIN:
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case EINTR:
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/* for EAGAIN/EINTR written still contains the sent bytes */
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break; /* try again later */
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case EPIPE:
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case ENOTCONN:
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return -2;
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default:
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log_error_write(srv, __FILE__, __LINE__, "ssd", "sendfile: ", strerror(errno), errno);
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return -1;
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}
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}
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if (written >= 0) {
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chunkqueue_mark_written(cq, written);
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*p_max_bytes -= written;
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}
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return (r >= 0 && written == toSend) ? 0 : -3;
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}
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#endif /* USE_FREEBSD_SENDFILE */
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