45 lines
799 B
C
45 lines
799 B
C
#ifndef ZM_SENDFILE_H
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#define ZM_SENDFILE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef HAVE_SENDFILE4_SUPPORT
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#include <sys/sendfile.h>
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int zm_sendfile(int out_fd, int in_fd, off_t *offset, size_t size) {
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int err;
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err = sendfile(out_fd, in_fd, offset, size);
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if ( err < 0 )
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return -errno;
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return err;
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}
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#elif HAVE_SENDFILE7_SUPPORT
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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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int zm_sendfile(int out_fd, int in_fd, off_t *offset, off_t size) {
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int err;
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err = sendfile(in_fd, out_fd, *offset, size, nullptr, &size, 0);
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if (err && errno != EAGAIN)
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return -errno;
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if (size) {
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*offset += size;
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return size;
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}
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return -EAGAIN;
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}
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#else
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#error "Your platform does not support sendfile. Sorry."
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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