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8db5ca900f
As a general design principle, strings that we aren't going to modify should usually be const. When compiling with -Wwrite-strings, quoted string constants are of type "const char *", causing compiler warnings when they are assigned to char * variables. Unfortunately, we need to add casts in a few places: * _dbus_list_append(), _dbus_test_oom_handling() and similar generic "user-data" APIs take a void *, not a const void *, so we have to cast * For historical reasons the execve() family of functions take a (char * const *), i.e. a constant pointer to an array of mutable strings, so again we have to cast * _dbus_spawn_async_with_babysitter similarly takes a char **, although we can make it a little more const-correct by making it take (char * const *) like execve() does This also incorporates a subsequent patch by Thomas Zimmermann to put various string constants in static storage, which is a little more efficient. Signed-off-by: Simon McVittie <smcv@debian.org> Reviewed-by: Thomas Zimmermann <tdz@users.sourceforge.net> Bug: https://bugs.freedesktop.org/show_bug.cgi?id=97357
75 lines
3.7 KiB
C
75 lines
3.7 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/* dbus-spawn.h Wrapper around fork/exec
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*
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* Copyright (C) 2002, 2003 Red Hat, Inc.
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* Copyright (C) 2003 CodeFactory AB
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*
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* Licensed under the Academic Free License version 2.1
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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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef DBUS_SPAWN_H
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#define DBUS_SPAWN_H
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#include <dbus/dbus-string.h>
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#include <dbus/dbus-errors.h>
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#include <dbus/dbus-watch.h>
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DBUS_BEGIN_DECLS
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typedef void (* DBusSpawnChildSetupFunc) (void *user_data);
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typedef struct DBusBabysitter DBusBabysitter;
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typedef void (* DBusBabysitterFinishedFunc) (DBusBabysitter *sitter,
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void *user_data);
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typedef enum {
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DBUS_SPAWN_REDIRECT_OUTPUT = (1 << 0),
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DBUS_SPAWN_NONE = 0
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} DBusSpawnFlags;
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dbus_bool_t _dbus_spawn_async_with_babysitter (DBusBabysitter **sitter_p,
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const char *log_name,
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char * const *argv,
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char **env,
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DBusSpawnFlags flags,
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DBusSpawnChildSetupFunc child_setup,
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void *user_data,
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DBusError *error);
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void _dbus_babysitter_set_result_function (DBusBabysitter *sitter,
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DBusBabysitterFinishedFunc finished,
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void *user_data);
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DBusBabysitter* _dbus_babysitter_ref (DBusBabysitter *sitter);
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void _dbus_babysitter_unref (DBusBabysitter *sitter);
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void _dbus_babysitter_kill_child (DBusBabysitter *sitter);
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dbus_bool_t _dbus_babysitter_get_child_exited (DBusBabysitter *sitter);
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void _dbus_babysitter_set_child_exit_error (DBusBabysitter *sitter,
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DBusError *error);
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dbus_bool_t _dbus_babysitter_get_child_exit_status (DBusBabysitter *sitter,
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int *status);
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dbus_bool_t _dbus_babysitter_set_watch_functions (DBusBabysitter *sitter,
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DBusAddWatchFunction add_function,
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DBusRemoveWatchFunction remove_function,
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DBusWatchToggledFunction toggled_function,
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void *data,
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DBusFreeFunction free_data_function);
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void _dbus_babysitter_block_for_child_exit (DBusBabysitter *sitter);
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DBUS_END_DECLS
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#endif /* DBUS_SPAWN_H */
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