lighttpd 1.4.x https://www.lighttpd.net/
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#include "network_backends.h"
#if defined(USE_SOLARIS_SENDFILEV)
#include "network.h"
#include "log.h"
#include <sys/sendfile.h>
#include <errno.h>
#include <string.h>
/**
* a very simple sendfilev() interface for solaris which can be optimised a lot more
* as solaris sendfilev() supports 'sending everythin in one syscall()'
*/
int network_write_file_chunk_sendfile(server *srv, connection *con, int fd, chunkqueue *cq, off_t *p_max_bytes) {
chunk* const c = cq->first;
off_t offset;
off_t toSend;
size_t written = 0;
int r;
sendfilevec_t fvec;
force_assert(NULL != c);
force_assert(FILE_CHUNK == c->type);
force_assert(c->offset >= 0 && c->offset <= c->file.length);
offset = c->file.start + c->offset;
toSend = c->file.length - c->offset;
if (toSend > *p_max_bytes) toSend = *p_max_bytes;
if (0 == toSend) {
chunkqueue_remove_finished_chunks(cq);
return 0;
}
if (0 != network_open_file_chunk(srv, con, cq)) return -1;
fvec.sfv_fd = c->file.fd;
fvec.sfv_flag = 0;
fvec.sfv_off = offset;
fvec.sfv_len = toSend;
/* Solaris sendfilev() */
if (-1 == (r = sendfilev(fd, &fvec, 1, &written))) {
switch(errno) {
case EAGAIN:
case EINTR:
/* for EAGAIN/EINTR written still contains the sent bytes */
break; /* try again later */
case EPIPE:
case ENOTCONN:
return -2;
default:
log_error_write(srv, __FILE__, __LINE__, "ssd", "sendfile: ", strerror(errno), errno);
return -1;
}
}
if (written >= 0) {
chunkqueue_mark_written(cq, written);
*p_max_bytes -= written;
}
return (r >= 0 && (off_t) written == toSend) ? 0 : -3;
}
#endif /* USE_SOLARIS_SENDFILEV */