lighttpd 1.4.x
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84 lines
2.0 KiB
84 lines
2.0 KiB
#include "first.h" |
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#include "network_backends.h" |
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#include "log.h" |
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#include "sys-socket.h" |
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#include <unistd.h> |
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#include <errno.h> |
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#include <string.h> |
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int network_write_file_chunk_no_mmap(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, toSend; |
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ssize_t r; |
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UNUSED(con); |
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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 > 64*1024) toSend = 64*1024; /* max read 64kb in one step */ |
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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 != chunkqueue_open_file_chunk(srv, cq)) return -1; |
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buffer_string_prepare_copy(srv->tmp_buf, toSend); |
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if (-1 == lseek(c->file.fd, offset, SEEK_SET)) { |
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log_error_write(srv, __FILE__, __LINE__, "ss", "lseek: ", strerror(errno)); |
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return -1; |
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} |
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if (-1 == (toSend = read(c->file.fd, srv->tmp_buf->ptr, toSend))) { |
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log_error_write(srv, __FILE__, __LINE__, "ss", "read: ", strerror(errno)); |
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return -1; |
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} |
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#if defined(__WIN32) |
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if ((r = send(fd, srv->tmp_buf->ptr, toSend, 0)) < 0) { |
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int lastError = WSAGetLastError(); |
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switch (lastError) { |
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case WSAEINTR: |
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case WSAEWOULDBLOCK: |
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break; |
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case WSAECONNRESET: |
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case WSAETIMEDOUT: |
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case WSAECONNABORTED: |
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return -2; |
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default: |
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log_error_write(srv, __FILE__, __LINE__, "sdd", |
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"send failed: ", lastError, fd); |
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return -1; |
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} |
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} |
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#else /* __WIN32 */ |
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if ((r = write(fd, srv->tmp_buf->ptr, toSend)) < 0) { |
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switch (errno) { |
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case EAGAIN: |
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case EINTR: |
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break; |
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case EPIPE: |
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case ECONNRESET: |
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return -2; |
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default: |
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log_error_write(srv, __FILE__, __LINE__, "ssd", |
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"write failed:", strerror(errno), fd); |
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return -1; |
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} |
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} |
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#endif /* __WIN32 */ |
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if (r >= 0) { |
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*p_max_bytes -= r; |
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chunkqueue_mark_written(cq, r); |
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} |
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return (r > 0 && r == toSend) ? 0 : -3; |
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}
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