lighttpd 1.4.x
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78 lines
1.7 KiB
78 lines
1.7 KiB
#include "first.h" |
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#include "network_backends.h" |
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#if defined(USE_LINUX_SENDFILE) |
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#include "log.h" |
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#include <sys/sendfile.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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ssize_t r; |
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off_t offset; |
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off_t toSend; |
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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 != chunkqueue_open_file_chunk(srv, cq)) return -1; |
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if (-1 == (r = sendfile(fd, c->file.fd, &offset, toSend))) { |
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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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case EINVAL: |
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case ENOSYS: |
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#if defined(ENOTSUP) \ |
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&& (!defined(EOPNOTSUPP) || EOPNOTSUPP != ENOTSUP) |
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case ENOTSUP: |
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#endif |
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#ifdef EOPNOTSUPP |
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case EOPNOTSUPP: |
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#endif |
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#ifdef ESOCKTNOSUPPORT |
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case ESOCKTNOSUPPORT: |
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#endif |
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#ifdef EAFNOSUPPORT |
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case EAFNOSUPPORT: |
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#endif |
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#ifdef USE_MMAP |
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return network_write_file_chunk_mmap(srv, con, fd, cq, p_max_bytes); |
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#else |
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return network_write_file_chunk_no_mmap(srv, con, fd, cq, p_max_bytes); |
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#endif |
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default: |
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log_error_write(srv, __FILE__, __LINE__, "ssd", |
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"sendfile failed:", strerror(errno), fd); |
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return -1; |
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} |
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} |
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if (r >= 0) { |
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chunkqueue_mark_written(cq, r); |
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*p_max_bytes -= r; |
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} |
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return (r > 0 && r == toSend) ? 0 : -3; |
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} |
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#endif /* USE_LINUX_SENDFILE */
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