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`
147 lines
4.1 KiB
C
147 lines
4.1 KiB
C
/* libguestfs
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* Copyright (C) 2014 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 backend settings 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 <errno.h>
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#include <error.h>
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#include <assert.h>
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#include "guestfs.h"
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#include "guestfs-internal-frontend.h"
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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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char **strs;
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char *str;
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int r, pass;
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/* Make sure that LIBGUESTFS_BACKEND_SETTINGS in the test
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* environment doesn't affect the handle.
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*/
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unsetenv ("LIBGUESTFS_BACKEND_SETTINGS");
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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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/* There should be no backend settings initially. */
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strs = guestfs_get_backend_settings (g);
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assert (strs != NULL);
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assert (strs[0] == NULL);
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guestfs_int_free_string_list (strs);
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guestfs_push_error_handler (g, NULL, NULL);
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str = guestfs_get_backend_setting (g, "foo");
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guestfs_pop_error_handler (g);
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assert (str == NULL);
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assert (guestfs_last_errno (g) == ESRCH);
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r = guestfs_clear_backend_setting (g, "bar");
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assert (r == 0);
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/* Create some settings in the handle, either using
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* guestfs_set_backend_settings or using the environment variable.
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*/
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for (pass = 0; pass <= 1; ++pass) {
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if (pass == 0) {
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const char *initial_settings[] = {
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"foo", "foo=1", "foo=bar", "bar", "baz=value", NULL
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};
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r = guestfs_set_backend_settings (g, (char **) initial_settings);
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assert (r == 0);
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}
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else /* pass == 1 */ {
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const char *initial_settings = "foo:foo=1:foo=bar:bar:baz=value";
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guestfs_close (g);
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setenv ("LIBGUESTFS_BACKEND_SETTINGS", initial_settings, 1);
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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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}
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/* Check the settings are correct. */
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strs = guestfs_get_backend_settings (g);
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assert (strs != NULL);
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assert (STREQ (strs[0], "foo"));
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assert (STREQ (strs[1], "foo=1"));
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assert (STREQ (strs[2], "foo=bar"));
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assert (STREQ (strs[3], "bar"));
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assert (STREQ (strs[4], "baz=value"));
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assert (strs[5] == NULL);
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guestfs_int_free_string_list (strs);
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str = guestfs_get_backend_setting (g, "bar");
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assert (str != NULL);
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assert (STREQ (str, "1"));
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free (str);
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str = guestfs_get_backend_setting (g, "baz");
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assert (str != NULL);
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assert (STREQ (str, "value"));
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free (str);
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str = guestfs_get_backend_setting (g, "foo");
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assert (str != NULL);
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/* An implementation could return any of the values. */
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free (str);
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guestfs_push_error_handler (g, NULL, NULL);
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str = guestfs_get_backend_setting (g, "nothere");
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guestfs_pop_error_handler (g);
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assert (str == NULL);
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assert (guestfs_last_errno (g) == ESRCH);
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r = guestfs_set_backend_setting (g, "foo", "");
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assert (r == 0);
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r = guestfs_set_backend_setting (g, "foo", "1");
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assert (r == 0);
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r = guestfs_set_backend_setting (g, "foo", "2");
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assert (r == 0);
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r = guestfs_set_backend_setting (g, "foo", "3");
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assert (r == 0);
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r = guestfs_clear_backend_setting (g, "foo");
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assert (r == 1);
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r = guestfs_clear_backend_setting (g, "bar");
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assert (r == 1);
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r = guestfs_clear_backend_setting (g, "baz");
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assert (r == 1);
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strs = guestfs_get_backend_settings (g);
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assert (strs != NULL);
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assert (strs[0] == NULL);
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guestfs_int_free_string_list (strs);
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}
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guestfs_close (g);
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exit (EXIT_SUCCESS);
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}
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