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libotutil: Fix two bugs in usage of posix_fallocate()

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* It's invalid to call it with a size of 0, so don't do that.

* posix_* apparently don't set errno.  So capture the return value and
  use that.
This commit is contained in:
Colin Walters 2014-04-29 07:40:25 -04:00
parent 22ab7b3e79
commit 5346e0615b
1 changed files with 7 additions and 3 deletions
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10
src/libotutil/ot-gio-utils.c
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@ -308,10 +308,14 @@ ot_gfile_replace_contents_fsync (GFile *path,
instream = g_memory_input_stream_new_from_bytes (contents);
if (posix_fallocate (fd, 0, g_bytes_get_size (contents)) != 0)
if (g_bytes_get_size (contents) > 0)
{
ot_util_set_error_from_errno (error, errno);
goto out;
int r = posix_fallocate (fd, 0, g_bytes_get_size (contents));
if (r != 0)
{
ot_util_set_error_from_errno (error, r);
goto out;
}
}
if (g_output_stream_splice (stream, instream, 0,