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lighttpd 1.4.41

    1: #include "first.h"
    2: 
    3: #include "network_backends.h"
    4: 
    5: #if defined(USE_FREEBSD_SENDFILE)
    6: 
    7: #include "network.h"
    8: #include "log.h"
    9: 
   10: #include <sys/types.h>
   11: #include <sys/socket.h>
   12: #include <sys/uio.h>
   13: 
   14: #include <errno.h>
   15: #include <string.h>
   16: 
   17: int network_write_file_chunk_sendfile(server *srv, connection *con, int fd, chunkqueue *cq, off_t *p_max_bytes) {
   18: 	chunk* const c = cq->first;
   19: 	off_t offset, written = 0;
   20: 	off_t toSend;
   21: 	int r;
   22: 
   23: 	force_assert(NULL != c);
   24: 	force_assert(FILE_CHUNK == c->type);
   25: 	force_assert(c->offset >= 0 && c->offset <= c->file.length);
   26: 
   27: 	offset = c->file.start + c->offset;
   28: 	toSend = c->file.length - c->offset;
   29: 	if (toSend > *p_max_bytes) toSend = *p_max_bytes;
   30: 
   31: 	if (0 == toSend) {
   32: 		chunkqueue_remove_finished_chunks(cq);
   33: 		return 0;
   34: 	}
   35: 
   36: 	if (0 != network_open_file_chunk(srv, con, cq)) return -1;
   37: 
   38: 	/* FreeBSD sendfile() */
   39: 	if (-1 == (r = sendfile(c->file.fd, fd, offset, toSend, NULL, &written, 0))) {
   40: 		switch(errno) {
   41: 		case EAGAIN:
   42: 		case EINTR:
   43: 			/* for EAGAIN/EINTR written still contains the sent bytes */
   44: 			break; /* try again later */
   45: 		case EPIPE:
   46: 		case ENOTCONN:
   47: 			return -2;
   48: 		case EINVAL:
   49: 		case ENOSYS:
   50: 	      #if defined(ENOTSUP) \
   51: 		&& (!defined(EOPNOTSUPP) || EOPNOTSUPP != ENOTSUP)
   52: 		case ENOTSUP:
   53: 	      #endif
   54: 	      #ifdef EOPNOTSUPP
   55: 		case EOPNOTSUPP:
   56: 	      #endif
   57: 	      #ifdef ESOCKTNOSUPPORT
   58: 		case ESOCKTNOSUPPORT:
   59: 	      #endif
   60: 	      #ifdef EAFNOSUPPORT
   61: 		case EAFNOSUPPORT:
   62: 	      #endif
   63: 		      #ifdef USE_MMAP
   64: 			return network_write_file_chunk_mmap(srv, con, fd, cq, p_max_bytes);
   65: 		      #else
   66: 			return network_write_file_chunk_no_mmap(srv, con, fd, cq, p_max_bytes);
   67: 		      #endif
   68: 		default:
   69: 			log_error_write(srv, __FILE__, __LINE__, "ssd", "sendfile: ", strerror(errno), errno);
   70: 			return -1;
   71: 		}
   72: 	}
   73: 
   74: 	if (written >= 0) {
   75: 		chunkqueue_mark_written(cq, written);
   76: 		*p_max_bytes -= written;
   77: 	}
   78: 
   79: 	return (r >= 0 && written == toSend) ? 0 : -3;
   80: }
   81: 
   82: #endif /* USE_FREEBSD_SENDFILE */