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im_mmapinrw - memory maps a VASARI image file with read and write access
#include <vips/vips.h>
IMAGE *im_mmapinrw(file_name)
char *file_name;
im_mmapinrw(3)
works exactly as im_mmapin but
the entered file_name is memory mapped with read and write permissions.
This is useful for some applications, like writing lines onto an existing
file. Since the user might change accidentally the context of the original
file, great care should taken when handling a file with this routine.
im_open(3)
is generally more convenient.
The function returns the image
descriptor on success and NULL on error.
im_close(3)
, im_open(3)
,
im_makerw(3)
.
N. Dessipris
N. Dessipris - 11/04/1990
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