mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
fdfedcb4ef
Like with the previous commit, this replaces instances of:
if (something_bad) {
fprintf (stderr, "%s: error message\n", guestfs_int_program_name);
exit (EXIT_FAILURE);
}
with:
if (something_bad)
error (EXIT_FAILURE, 0, "error message");
(except in a few cases were errno was incorrectly being ignored, in
which case I have fixed that).
It's slightly more complex than the previous commit because we must be
careful to:
- Remove the program name (since error(3) prints it).
- Remove any trailing \n character from the message.
Candidates for replacement were found using:
pcregrep --buffer-size 10M -M '\bfprintf\b.*\n.*\bexit\b' `git ls-files`
122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* libguestfs
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* Copyright (C) 2011 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/* Test aspects of the private data area API. */
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <assert.h>
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#include <errno.h>
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#include <error.h>
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#include "guestfs.h"
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#include "guestfs-internal-frontend.h"
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#define PREFIX "test_"
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static size_t close_callback_called = 0;
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/* This callback deletes all test keys in the handle. */
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static void
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close_callback (guestfs_h *g,
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void *opaque,
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uint64_t event,
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int event_handle,
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int flags,
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const char *buf, size_t buf_len,
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const uint64_t *array, size_t array_len)
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{
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const char *key;
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void *data;
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close_callback_called++;
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again:
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data = guestfs_first_private (g, &key);
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while (data != NULL) {
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if (strncmp (key, PREFIX, strlen (PREFIX)) == 0) {
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guestfs_set_private (g, key, NULL);
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goto again;
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}
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data = guestfs_next_private (g, &key);
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}
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}
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int
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main (int argc, char *argv[])
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{
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guestfs_h *g;
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const char *key;
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void *data;
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size_t count;
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g = guestfs_create ();
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if (g == NULL)
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error (EXIT_FAILURE, errno, "guestfs_create");
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if (guestfs_set_event_callback (g, close_callback, GUESTFS_EVENT_CLOSE,
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0, NULL) == -1)
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exit (EXIT_FAILURE);
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guestfs_set_private (g, PREFIX "a", (void *) 1);
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guestfs_set_private (g, PREFIX "b", (void *) 2);
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guestfs_set_private (g, PREFIX "c", (void *) 3);
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guestfs_set_private (g, PREFIX "a", (void *) 4); /* overwrites previous */
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/* Check we can fetch keys. */
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assert (guestfs_get_private (g, PREFIX "a") == (void *) 4);
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assert (guestfs_get_private (g, PREFIX "b") == (void *) 2);
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assert (guestfs_get_private (g, PREFIX "c") == (void *) 3);
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assert (guestfs_get_private (g, PREFIX "d") == NULL);
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/* Check we can count keys by iterating. */
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count = 0;
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data = guestfs_first_private (g, &key);
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while (data != NULL) {
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if (strncmp (key, PREFIX, strlen (PREFIX)) == 0)
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count++;
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data = guestfs_next_private (g, &key);
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}
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assert (count == 3);
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/* Delete some keys. */
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guestfs_set_private (g, PREFIX "a", NULL);
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guestfs_set_private (g, PREFIX "b", NULL);
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/* Count them again. */
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count = 0;
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data = guestfs_first_private (g, &key);
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while (data != NULL) {
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if (strncmp (key, PREFIX, strlen (PREFIX)) == 0)
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count++;
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data = guestfs_next_private (g, &key);
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}
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assert (count == 1);
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/* Closing should implicitly call the close_callback function. */
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guestfs_close (g);
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assert (close_callback_called == 1);
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exit (EXIT_SUCCESS);
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}
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