Imported Upstream version 2.53.3
[platform/upstream/glib.git] / glib / gspawn.h
index 24bd521..6489f4a 100644 (file)
@@ -2,20 +2,18 @@
  *
  *  Copyright 2000 Red Hat, Inc.
  *
- * GLib is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
- * GLib is distributed in the hope that it will be useful,
+ * This library 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
  * Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public
- * License along with GLib; see the file COPYING.LIB.  If not, write
- * to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 
 #ifndef __G_SPAWN_H__
@@ -45,25 +43,25 @@ G_BEGIN_DECLS
  * @G_SPAWN_ERROR_FORK: Fork failed due to lack of memory.
  * @G_SPAWN_ERROR_READ: Read or select on pipes failed.
  * @G_SPAWN_ERROR_CHDIR: Changing to working directory failed.
- * @G_SPAWN_ERROR_ACCES: execv() returned <literal>EACCES</literal>
- * @G_SPAWN_ERROR_PERM: execv() returned <literal>EPERM</literal>
- * @G_SPAWN_ERROR_TOO_BIG: execv() returned <literal>E2BIG</literal>
+ * @G_SPAWN_ERROR_ACCES: execv() returned `EACCES`
+ * @G_SPAWN_ERROR_PERM: execv() returned `EPERM`
+ * @G_SPAWN_ERROR_TOO_BIG: execv() returned `E2BIG`
  * @G_SPAWN_ERROR_2BIG: deprecated alias for %G_SPAWN_ERROR_TOO_BIG
- * @G_SPAWN_ERROR_NOEXEC: execv() returned <literal>ENOEXEC</literal>
- * @G_SPAWN_ERROR_NAMETOOLONG: execv() returned <literal>ENAMETOOLONG</literal>
- * @G_SPAWN_ERROR_NOENT: execv() returned <literal>ENOENT</literal>
- * @G_SPAWN_ERROR_NOMEM: execv() returned <literal>ENOMEM</literal>
- * @G_SPAWN_ERROR_NOTDIR: execv() returned <literal>ENOTDIR</literal>
- * @G_SPAWN_ERROR_LOOP: execv() returned <literal>ELOOP</literal>
- * @G_SPAWN_ERROR_TXTBUSY: execv() returned <literal>ETXTBUSY</literal>
- * @G_SPAWN_ERROR_IO: execv() returned <literal>EIO</literal>
- * @G_SPAWN_ERROR_NFILE: execv() returned <literal>ENFILE</literal>
- * @G_SPAWN_ERROR_MFILE: execv() returned <literal>EMFILE</literal>
- * @G_SPAWN_ERROR_INVAL: execv() returned <literal>EINVAL</literal>
- * @G_SPAWN_ERROR_ISDIR: execv() returned <literal>EISDIR</literal>
- * @G_SPAWN_ERROR_LIBBAD: execv() returned <literal>ELIBBAD</literal>
+ * @G_SPAWN_ERROR_NOEXEC: execv() returned `ENOEXEC`
+ * @G_SPAWN_ERROR_NAMETOOLONG: execv() returned `ENAMETOOLONG`
+ * @G_SPAWN_ERROR_NOENT: execv() returned `ENOENT`
+ * @G_SPAWN_ERROR_NOMEM: execv() returned `ENOMEM`
+ * @G_SPAWN_ERROR_NOTDIR: execv() returned `ENOTDIR`
+ * @G_SPAWN_ERROR_LOOP: execv() returned `ELOOP`
+ * @G_SPAWN_ERROR_TXTBUSY: execv() returned `ETXTBUSY`
+ * @G_SPAWN_ERROR_IO: execv() returned `EIO`
+ * @G_SPAWN_ERROR_NFILE: execv() returned `ENFILE`
+ * @G_SPAWN_ERROR_MFILE: execv() returned `EMFILE`
+ * @G_SPAWN_ERROR_INVAL: execv() returned `EINVAL`
+ * @G_SPAWN_ERROR_ISDIR: execv() returned `EISDIR`
+ * @G_SPAWN_ERROR_LIBBAD: execv() returned `ELIBBAD`
  * @G_SPAWN_ERROR_FAILED: Some other fatal failure,
- *   <literal>error-&gt;message</literal> should explain.
+ *   `error->message` should explain.
  *
  * Error codes returned by spawning processes.
  */
@@ -124,53 +122,54 @@ typedef enum
  * functions.
  *
  * However, even on POSIX, you are extremely limited in what you can
- * safely do from a #GSpawnChildSetupFunc, because any mutexes that
- * were held by other threads in the parent process at the time of the
- * fork() will still be locked in the child process, and they will
- * never be unlocked (since the threads that held them don't exist in
- * the child). POSIX allows only async-signal-safe functions (see
- * <citerefentry><refentrytitle>signal</refentrytitle><manvolnum>7</manvolnum></citerefentry>)
- * to be called in the child between fork() and exec(), which
- * drastically limits the usefulness of child setup functions.
+ * safely do from a #GSpawnChildSetupFunc, because any mutexes that were
+ * held by other threads in the parent process at the time of the fork()
+ * will still be locked in the child process, and they will never be
+ * unlocked (since the threads that held them don't exist in the child).
+ * POSIX allows only async-signal-safe functions (see signal(7)) to be
+ * called in the child between fork() and exec(), which drastically limits
+ * the usefulness of child setup functions.
  *
  * In particular, it is not safe to call any function which may
  * call malloc(), which includes POSIX functions such as setenv().
  * If you need to set up the child environment differently from
  * the parent, you should use g_get_environ(), g_environ_setenv(),
  * and g_environ_unsetenv(), and then pass the complete environment
- * list to the <literal>g_spawn...</literal> function.
+ * list to the `g_spawn...` function.
  */
 typedef void (* GSpawnChildSetupFunc) (gpointer user_data);
 
 /**
  * GSpawnFlags:
- * @G_SPAWN_LEAVE_DESCRIPTORS_OPEN: the parent's open file descriptors will be
- *   inherited by the child; otherwise all descriptors except stdin/stdout/stderr
- *   will be closed before calling exec() in the child.
- * @G_SPAWN_DO_NOT_REAP_CHILD: the child will not be automatically reaped; you
- *   must use g_child_watch_add() yourself (or call waitpid()
- *   or handle <literal>SIGCHLD</literal> yourself), or the child will become a zombie.
- * @G_SPAWN_SEARCH_PATH: <literal>argv[0]</literal> need not be an absolute path,
- *   it will be looked for in the user's <envar>PATH</envar>.
+ * @G_SPAWN_DEFAULT: no flags, default behaviour
+ * @G_SPAWN_LEAVE_DESCRIPTORS_OPEN: the parent's open file descriptors will
+ *     be inherited by the child; otherwise all descriptors except stdin,
+ *     stdout and stderr will be closed before calling exec() in the child.
+ * @G_SPAWN_DO_NOT_REAP_CHILD: the child will not be automatically reaped;
+ *     you must use g_child_watch_add() yourself (or call waitpid() or handle
+ *     `SIGCHLD` yourself), or the child will become a zombie.
+ * @G_SPAWN_SEARCH_PATH: `argv[0]` need not be an absolute path, it will be
+ *     looked for in the user's `PATH`.
  * @G_SPAWN_STDOUT_TO_DEV_NULL: the child's standard output will be discarded,
- *   instead of going to the same location as the parent's standard output.
+ *     instead of going to the same location as the parent's standard output.
  * @G_SPAWN_STDERR_TO_DEV_NULL: the child's standard error will be discarded.
  * @G_SPAWN_CHILD_INHERITS_STDIN: the child will inherit the parent's standard
- *   input (by default, the child's standard input is attached to
- *   <filename>/dev/null</filename>).
- * @G_SPAWN_FILE_AND_ARGV_ZERO: the first element of <literal>argv</literal> is
- *   the file to execute, while the remaining elements are the actual argument
- *   vector to pass to the file. Normally g_spawn_async_with_pipes() uses
- *   <literal>argv[0]</literal> as the file to execute, and passes all of
- *   <literal>argv</literal> to the child.
- * @G_SPAWN_SEARCH_PATH_FROM_ENVP: if <literal>argv[0]</literal> is not an abolute path,
- *   it will be looked for in the <envar>PATH</envar> from the passed child 
- *   environment. Since: 2.34
+ *     input (by default, the child's standard input is attached to `/dev/null`).
+ * @G_SPAWN_FILE_AND_ARGV_ZERO: the first element of `argv` is the file to
+ *     execute, while the remaining elements are the actual argument vector
+ *     to pass to the file. Normally g_spawn_async_with_pipes() uses `argv[0]`
+ *     as the file to execute, and passes all of `argv` to the child.
+ * @G_SPAWN_SEARCH_PATH_FROM_ENVP: if `argv[0]` is not an abolute path,
+ *     it will be looked for in the `PATH` from the passed child environment.
+ *     Since: 2.34
+ * @G_SPAWN_CLOEXEC_PIPES: create all pipes with the `O_CLOEXEC` flag set.
+ *     Since: 2.40
  *
  * Flags passed to g_spawn_sync(), g_spawn_async() and g_spawn_async_with_pipes().
  */
 typedef enum
 {
+  G_SPAWN_DEFAULT                = 0,
   G_SPAWN_LEAVE_DESCRIPTORS_OPEN = 1 << 0,
   G_SPAWN_DO_NOT_REAP_CHILD      = 1 << 1,
   /* look for argv[0] in the path i.e. use execvp() */
@@ -180,7 +179,8 @@ typedef enum
   G_SPAWN_STDERR_TO_DEV_NULL     = 1 << 4,
   G_SPAWN_CHILD_INHERITS_STDIN   = 1 << 5,
   G_SPAWN_FILE_AND_ARGV_ZERO     = 1 << 6,
-  G_SPAWN_SEARCH_PATH_FROM_ENVP  = 1 << 7
+  G_SPAWN_SEARCH_PATH_FROM_ENVP  = 1 << 7,
+  G_SPAWN_CLOEXEC_PIPES          = 1 << 8
 } GSpawnFlags;
 
 GLIB_AVAILABLE_IN_ALL
@@ -249,57 +249,6 @@ gboolean g_spawn_check_exit_status (gint      exit_status,
 GLIB_AVAILABLE_IN_ALL
 void g_spawn_close_pid (GPid pid);
 
-#ifdef G_OS_WIN32
-#define g_spawn_async              g_spawn_async_utf8
-#define g_spawn_async_with_pipes   g_spawn_async_with_pipes_utf8
-#define g_spawn_sync               g_spawn_sync_utf8
-#define g_spawn_command_line_sync  g_spawn_command_line_sync_utf8
-#define g_spawn_command_line_async g_spawn_command_line_async_utf8
-
-GLIB_AVAILABLE_IN_ALL
-gboolean g_spawn_async_utf8              (const gchar           *working_directory,
-                                          gchar                **argv,
-                                          gchar                **envp,
-                                          GSpawnFlags            flags,
-                                          GSpawnChildSetupFunc   child_setup,
-                                          gpointer               user_data,
-                                          GPid                  *child_pid,
-                                          GError               **error);
-GLIB_AVAILABLE_IN_ALL
-gboolean g_spawn_async_with_pipes_utf8   (const gchar           *working_directory,
-                                          gchar                **argv,
-                                          gchar                **envp,
-                                          GSpawnFlags            flags,
-                                          GSpawnChildSetupFunc   child_setup,
-                                          gpointer               user_data,
-                                          GPid                  *child_pid,
-                                          gint                  *standard_input,
-                                          gint                  *standard_output,
-                                          gint                  *standard_error,
-                                          GError               **error);
-GLIB_AVAILABLE_IN_ALL
-gboolean g_spawn_sync_utf8               (const gchar           *working_directory,
-                                          gchar                **argv,
-                                          gchar                **envp,
-                                          GSpawnFlags            flags,
-                                          GSpawnChildSetupFunc   child_setup,
-                                          gpointer               user_data,
-                                          gchar                **standard_output,
-                                          gchar                **standard_error,
-                                          gint                  *exit_status,
-                                          GError               **error);
-
-GLIB_AVAILABLE_IN_ALL
-gboolean g_spawn_command_line_sync_utf8  (const gchar           *command_line,
-                                          gchar                **standard_output,
-                                          gchar                **standard_error,
-                                          gint                  *exit_status,
-                                          GError               **error);
-GLIB_AVAILABLE_IN_ALL
-gboolean g_spawn_command_line_async_utf8 (const gchar           *command_line,
-                                          GError               **error);
-#endif
-
 G_END_DECLS
 
 #endif /* __G_SPAWN_H__ */