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| author |  Filipe Cabecinhas <filcab@gmail.com> | 2013-05-10 15:24:57 -0700 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2013-05-17 12:16:30 -0700 |
| commit | 6c642a878688adf46b226903858b53e2d31ac5c3 (patch) | |
| tree | 8fc188945aa2789a37089c4322c99bacbe4ccaca /compat | |
| parent | Git 1.8.2 (diff) | |
| download | tgif-6c642a878688adf46b226903858b53e2d31ac5c3.tar.xz | |
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>
Diffstat (limited to 'compat')
| -rw-r--r-- | compat/clipped-write.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/compat/clipped-write.c b/compat/clipped-write.c new file mode 100644 index 0000000000..b8f98ff77f --- /dev/null +++ b/compat/clipped-write.c @@ -0,0 +1,13 @@ +#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); +} |