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Name

linx_sigsize() - Get the size of a LINX signal buffer in bytes
linx_set_sigsize() - Set the size of a LINX signal buffer in bytes

Synopsis

#include <linx_types.h>
#include <linx.h>

LINX_OSBUFSIZE linx_sigsize(LINX *linx, union LINX_SIGNAL **sig);

int linx_set_sigsize(LINX *linx, union LINX_SIGNAL **sig, LINX_OSBUFSIZE sigsize);

Description

linx_sigsize() gets the size of the signal buffer sig. The signal buffer must be owned by the LINX endpoint, referred to by linx but can either be a received buffer or a buffer, allocated by the linx_alloc(3) call on this LINX endpoint.

linx_set_sigsize() resizes the signal buffer sig to sigsize bytes and returns 0 on success. An error is returned if the size is outside permitted limits. If the new size of the signal buffer sig is smaller than the original size, the data stored in signal buffer sig is truncated.

linx is the handle to the LINX endpoint, which owns the sig signal buffer.

sigsize is the new size in bytes of the signal buffer.

If linx is not a valid LINX endpoint, i.e. created with linx_open(3) then abort(3) is called.

Return Value

linx_sigsize returns the size in bytes of the signal buffer. linx_set_sigsize returns zero on success. If an error occurred, -1 is returned and errno is set.

Errors

EINVAL if sig is not a valid signal buffer.

EMSGSIZE if sigsize is outside the range 4 - 65535 bytes.

ENOMEM if there is not enough memory.

Bugs/Limitations

None.

See Also

linx(7) , linx_alloc(3) , linx_receive(3)

Author

Enea LINX team

Copyright

Copyright (c) 2006-2007, Enea Software AB All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of Enea Software AB nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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