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git/compat/clipped-write.c
Filipe Cabecinhas 6c642a8786 compate/clipped-write.c: large write(2) fails on Mac OS X/XNU
Due to a bug in the Darwin kernel, write(2) calls have a maximum size
of INT_MAX bytes.

Introduce a new compat function, clipped_write(), that only writes
at most INT_MAX bytes and returns the number of bytes written, as
a substitute for write(2), and allow platforms that need this to
enable it from the build mechanism with NEEDS_CLIPPED_WRITE.

Set it for Mac OS X by default.  It may be necessary to include this
function on Windows, too.

Signed-off-by: Filipe Cabecinhas <filcab+git@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-17 12:16:30 -07:00

13 lines
293 B
C

#include "../git-compat-util.h"
#undef write
/*
* Version of write that will write at most INT_MAX bytes.
* Workaround a xnu bug on Mac OS X
*/
ssize_t clipped_write(int fildes, const void *buf, size_t nbyte)
{
if (nbyte > INT_MAX)
nbyte = INT_MAX;
return write(fildes, buf, nbyte);
}