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common: Fix copying data from the spawned child.

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Fixes intermittent gpgtar failures.

* common/exectool.c (copy_buffer_do_copy): Initialize 'nwritten'.
(gnupg_exec_tool_stream): Loop until all data is copied.

Signed-off-by: Justus Winter <justus@g10code.com>
This commit is contained in:
Justus Winter 2016-06-28 14:38:35 +02:00
parent 52f65281f9
commit 8f79c31b4d
1 changed files with 15 additions and 10 deletions
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25
common/exectool.c
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@ -224,7 +224,7 @@ static gpg_error_t
copy_buffer_do_copy (struct copy_buffer *c, estream_t source, estream_t sink)
{
gpg_error_t err;
size_t nwritten;
size_t nwritten = 0;
if (c->nread == 0)
{
@ -390,7 +390,7 @@ gnupg_exec_tool_stream (const char *pgmname, const char *argv[],
/* Now read as long as we have something to poll. We continue
reading even after EOF or error on stdout so that we get the
other error messages or remaining outut. */
while (!fds[1].ignore && !fds[2].ignore)
while (! (fds[1].ignore && fds[2].ignore))
{
count = es_poll (fds, DIM(fds), -1);
if (count == -1)
@ -465,20 +465,25 @@ gnupg_exec_tool_stream (const char *pgmname, const char *argv[],
pgmname, gpg_strerror (err));
goto leave;
}
if (es_feof (fds[1].stream))
{
err = copy_buffer_flush (&cpbuf_out, output);
if (err)
{
log_error ("error reading data from '%s': %s\n",
pgmname, gpg_strerror (err));
goto leave;
}
fds[1].ignore = 1; /* ready. */
}
}
if (fds[2].got_read)
read_and_log_stderr (&fderrstate, fds + 2);
}
err = copy_buffer_flush (&cpbuf_out, output);
if (err)
{
log_error ("error reading data from '%s': %s\n",
pgmname, gpg_strerror (err));
goto leave;
}
read_and_log_stderr (&fderrstate, NULL); /* Flush. */
es_fclose (infp); infp = NULL;
es_fclose (extrafp); extrafp = NULL;