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/* Test harness for pipe-filter-gi.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
Written by Paolo Bonzini <bonzini@gnu.org>, 2009.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#include "pipe-filter.h"
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include "binary-io.h"
#include "full-write.h"
#include "macros.h"
/* 0.1 sec pause */
static void
small_nap (void)
{
usleep (100000);
}
static char static_buf[5];
static void *
prepare_read (size_t *num_bytes_p, void *private_data)
{
*num_bytes_p = sizeof (static_buf);
return static_buf;
}
/* Callback that ignores the data that has been read. */
static void
ignore_done_read (void *data_read, size_t num_bytes_read, void *private_data)
{
}
/* Callback that outputs the data that has been read. */
static void
output_done_read (void *data_read, size_t num_bytes_read, void *private_data)
{
full_write (STDOUT_FILENO, data_read, num_bytes_read);
}
static void
pipe_filter_gi_write_string (struct pipe_filter_gi *f, const char *string)
{
pipe_filter_gi_write (f, string, strlen (string));
}
int
main (int argc, char **argv)
{
struct pipe_filter_gi *f;
const char *path[] = { NULL, NULL };
ASSERT (argc == 2);
set_binary_mode (STDOUT_FILENO, O_BINARY);
/* Test writing to a nonexistent program traps sooner or later. */
{
int rc;
path[0] = "/nonexistent/blah";
f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, true, false,
prepare_read, ignore_done_read, NULL);
small_nap ();
rc = pipe_filter_gi_write (f, "", 1);
ASSERT (rc == 127 || rc == -1);
rc = pipe_filter_gi_close (f);
ASSERT (rc == 127 || rc == -1);
printf ("Test 1 passed.\n");
fflush (stdout);
}
/* Test returning the exit status. */
{
path[0] = argv[1];
f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, false, false,
prepare_read, ignore_done_read, NULL);
pipe_filter_gi_write_string (f, "1 -1");
ASSERT (pipe_filter_gi_close (f) == 1);
printf ("Test 2 passed.\n");
fflush (stdout);
}
/* Same, but test returning the status in pipe_filter_gi_write. */
{
int rc;
path[0] = argv[1];
f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, false, false,
prepare_read, ignore_done_read, NULL);
pipe_filter_gi_write_string (f, "1 -1\n"); /* tell the child to terminate */
small_nap (); /* let the child terminate */
rc = pipe_filter_gi_write (f, " ", 1); /* write to a closed pipe */
ASSERT (rc == -1 && errno == EPIPE);
/* Closing the filter must report same error again, for consistency with
pipe_filter_ii_execute. The subprocess' exit status is not returned. */
rc = pipe_filter_gi_close (f);
ASSERT (rc == -1 && errno == EPIPE);
printf ("Test 3 passed.\n");
fflush (stdout);
}
/* Now test asynchronous I/O. */
{
path[0] = argv[1];
f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, false, true,
prepare_read, output_done_read, NULL);
pipe_filter_gi_write_string (f, "1 50\n");
pipe_filter_gi_write_string (f, "51\n");
pipe_filter_gi_write_string (f, "100");
ASSERT (pipe_filter_gi_close (f) == 0);
printf ("Test 4 passed.\n");
fflush (stdout);
}
return 0;
}
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