[glib/wip/le-gsubprocess: 3/3] GSubprocess: New class for spawning child processes
- From: Ryan Lortie <ryanl src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [glib/wip/le-gsubprocess: 3/3] GSubprocess: New class for spawning child processes
- Date: Thu, 31 Jan 2013 15:06:32 +0000 (UTC)
commit 3346e60dfcafd43adca3c5c4b2ab9d8a7393bed8
Author: Colin Walters <walters verbum org>
Date: Thu May 17 14:37:17 2012 -0400
GSubprocess: New class for spawning child processes
There are a number of nice things this class brings:
0) Has a race-free termination API on all platforms (on UNIX, calls to
kill() and waitpid() are coordinated as not to cause problems).
1) Operates in terms of G{Input,Output}Stream, not file descriptors
2) Standard GIO-style async API for wait() with cancellation
3) Makes some simple cases easy, like synchronously spawning a
process with an argument list
4) Makes hard cases possible, like asynchronously running a process
with stdout/stderr merged, output directly to a file path
Much rewriting and code review from Ryan Lortie <desrt desrt ca>
https://bugzilla.gnome.org/show_bug.cgi?id=672102
docs/reference/gio/gio-docs.xml | 4 +
docs/reference/gio/gio-sections.txt | 34 +
docs/reference/gio/gio.types | 1 +
gio/Makefile.am | 5 +
gio/gio.h | 2 +
gio/gioenums.h | 50 ++
gio/giotypes.h | 18 +
gio/glib-compile-resources.c | 81 +--
gio/gsubprocess.c | 1609 +++++++++++++++++++++++++++++++++++
gio/gsubprocess.h | 174 ++++
gio/gsubprocesslauncher-private.h | 58 ++
gio/gsubprocesslauncher.c | 654 ++++++++++++++
gio/gsubprocesslauncher.h | 113 +++
gio/tests/.gitignore | 2 +
gio/tests/Makefile.am | 3 +
gio/tests/gsubprocess-testprog.c | 172 ++++
gio/tests/gsubprocess.c | 791 +++++++++++++++++
17 files changed, 3717 insertions(+), 54 deletions(-)
---
diff --git a/docs/reference/gio/gio-docs.xml b/docs/reference/gio/gio-docs.xml
index 5de3930..c10d6ab 100644
--- a/docs/reference/gio/gio-docs.xml
+++ b/docs/reference/gio/gio-docs.xml
@@ -107,6 +107,10 @@
<xi:include href="xml/ginitable.xml"/>
<xi:include href="xml/gasyncinitable.xml"/>
</chapter>
+ <chapter id="subprocesses">
+ <title>Subprocesses</title>
+ <xi:include href="xml/gsubprocess.xml"/>
+ </chapter>
<chapter id="networking">
<title>Low-level network support</title>
<xi:include href="xml/gsocket.xml"/>
diff --git a/docs/reference/gio/gio-sections.txt b/docs/reference/gio/gio-sections.txt
index 23e95c3..dcf417b 100644
--- a/docs/reference/gio/gio-sections.txt
+++ b/docs/reference/gio/gio-sections.txt
@@ -3991,3 +3991,37 @@ g_task_get_type
<TITLE>gnetworking.h</TITLE>
g_networking_init
</SECTION>
+
+<FILE>gsubprocess</FILE>
+<TITLE>GSubprocess</TITLE>
+GSubprocess
+g_subprocess_new
+g_subprocess_newv
+<SUBSECTION IO>
+g_subprocess_get_stdin_pipe
+g_subprocess_get_stdout_pipe
+g_subprocess_get_stderr_pipe
+<SUBSECTION Waiting>
+g_subprocess_wait
+g_subprocess_wait_sync
+g_subprocess_wait_finish
+g_subprocess_wait_check
+g_subprocess_wait_check_sync
+g_subprocess_wait_check_finish
+<SUBSECTION Status>
+g_subprocess_get_successful
+g_subprocess_get_if_exited
+g_subprocess_get_exit_status
+g_subprocess_get_if_signaled
+g_subprocess_get_term_sig
+g_subprocess_get_status
+<SUBSECTION Control>
+g_subprocess_send_signal
+g_subprocess_force_exit
+<SUBSECTION Standard>
+G_IS_SUBPROCESS
+G_TYPE_SUBPROCESS
+G_SUBPROCESS
+<SUBSECTION Private>
+g_subprocess_get_type
+</SECTION>
diff --git a/docs/reference/gio/gio.types b/docs/reference/gio/gio.types
index 5cd996c..98ba8bf 100644
--- a/docs/reference/gio/gio.types
+++ b/docs/reference/gio/gio.types
@@ -136,3 +136,4 @@ g_menu_item_get_type
g_test_dbus_get_type
g_test_dbus_flags_get_type
g_task_get_type
+g_subprocess_get_type
diff --git a/gio/Makefile.am b/gio/Makefile.am
index c8b5476..f9a96ae 100644
--- a/gio/Makefile.am
+++ b/gio/Makefile.am
@@ -424,6 +424,9 @@ libgio_2_0_la_SOURCES = \
gsocketlistener.c \
gsocketoutputstream.c \
gsocketoutputstream.h \
+ gsubprocesslauncher.c \
+ gsubprocess.c \
+ gsubprocesslauncher-private.h \
gproxy.c \
gproxyaddress.c \
gproxyaddressenumerator.c \
@@ -588,6 +591,8 @@ gio_headers = \
gsocketservice.h \
gsrvtarget.h \
gtask.h \
+ gsubprocess.h \
+ gsubprocesslauncher.h \
gtcpconnection.h \
gtcpwrapperconnection.h \
gthreadedsocketservice.h\
diff --git a/gio/gio.h b/gio/gio.h
index 1998a64..45e9eff 100644
--- a/gio/gio.h
+++ b/gio/gio.h
@@ -123,6 +123,8 @@
#include <gio/gsocketservice.h>
#include <gio/gsrvtarget.h>
#include <gio/gtask.h>
+#include <gio/gsubprocess.h>
+#include <gio/gsubprocesslauncher.h>
#include <gio/gtcpconnection.h>
#include <gio/gtcpwrapperconnection.h>
#include <gio/gtestdbus.h>
diff --git a/gio/gioenums.h b/gio/gioenums.h
index b76f7a6..7feda43 100644
--- a/gio/gioenums.h
+++ b/gio/gioenums.h
@@ -1658,6 +1658,56 @@ typedef enum /*< flags >*/ {
G_TEST_DBUS_NONE = 0
} GTestDBusFlags;
+/**
+ * GSubprocessFlags:
+ * @G_SUBPROCESS_FLAGS_NONE: No flags.
+ * @G_SUBPROCESS_FLAGS_STDIN_PIPE: create a pipe for the stdin of the
+ * spawned process that can be accessed with
+ * g_subprocess_get_stdin_pipe().
+ * @G_SUBPROCESS_FLAGS_STDIN_INHERIT: stdin is inherited from the
+ * calling process.
+ * @G_SUBPROCESS_FLAGS_STDOUT_PIPE: create a pipe for the stdout of the
+ * spawned process that can be accessed with
+ * g_subprocess_get_stdout_pipe().
+ * @G_SUBPROCESS_FLAGS_STDOUT_SILENCE: silence the stdout of the spawned
+ * process (ie: redirect to /dev/null).
+ * @G_SUBPROCESS_FLAGS_STDERR_PIPE: create a pipe for the stderr of the
+ * spawned process that can be accessed with
+ * g_subprocess_get_stderr_pipe().
+ * @G_SUBPROCESS_FLAGS_STDERR_SILENCE: silence the stderr of the spawned
+ * process (ie: redirect to /dev/null).
+ * @G_SUBPROCESS_FLAGS_STDERR_MERGE: merge the stderr of the spawned
+ * process with whatever the stdout happens to be. This is a good way
+ * of directing both streams to a common log file, for example.
+ * @G_SUBPROCESS_FLAGS_INHERIT_FDS: spawned processes will inherit the
+ * file descriptors of their parent, unless those descriptors have
+ * been explicitly marked as close-on-exec. This flag has no effect
+ * over the "standard" file descriptors (stdin, stdout, stderr).
+ *
+ * Flags to define the behaviour of a #GSubprocess.
+ *
+ * Note that the default for stdin is to redirect from /dev/null. For
+ * stdout and stderr the default are for them to inherit the
+ * corresponding descriptor from the calling process.
+ *
+ * Note that it is a programmer error to mix 'incompatible' flags. For
+ * example, you may not request both %G_SUBPROCESS_FLAGS_STDOUT_PIPE and
+ * %G_SUBPROCESS_FLAGS_STDOUT_SILENCE.
+ *
+ * Since: 2.36
+ **/
+typedef enum {
+ G_SUBPROCESS_FLAGS_NONE = 0,
+ G_SUBPROCESS_FLAGS_STDIN_PIPE = (1u << 0),
+ G_SUBPROCESS_FLAGS_STDIN_INHERIT = (1u << 1),
+ G_SUBPROCESS_FLAGS_STDOUT_PIPE = (1u << 2),
+ G_SUBPROCESS_FLAGS_STDOUT_SILENCE = (1u << 3),
+ G_SUBPROCESS_FLAGS_STDERR_PIPE = (1u << 4),
+ G_SUBPROCESS_FLAGS_STDERR_SILENCE = (1u << 5),
+ G_SUBPROCESS_FLAGS_STDERR_MERGE = (1u << 6),
+ G_SUBPROCESS_FLAGS_INHERIT_FDS = (1u << 7)
+} GSubprocessFlags;
+
G_END_DECLS
#endif /* __GIO_ENUMS_H__ */
diff --git a/gio/giotypes.h b/gio/giotypes.h
index 2696091..733bc48 100644
--- a/gio/giotypes.h
+++ b/gio/giotypes.h
@@ -135,6 +135,7 @@ typedef struct _GIOStream GIOStream;
typedef struct _GPollableInputStream GPollableInputStream; /* Dummy typedef */
typedef struct _GPollableOutputStream GPollableOutputStream; /* Dummy typedef */
typedef struct _GResolver GResolver;
+
/**
* GResource:
*
@@ -468,6 +469,23 @@ typedef GType (*GDBusProxyTypeFunc) (GDBusObjectManagerClient *manager,
typedef struct _GTestDBus GTestDBus;
+/**
+ * GSubprocess:
+ *
+ * A child process.
+ *
+ * Since: 2.36
+ */
+typedef struct _GSubprocess GSubprocess;
+/**
+ * GSubprocessLauncher:
+ *
+ * Options for launching a child process.
+ *
+ * Since: 2.36
+ */
+typedef struct _GSubprocessLauncher GSubprocessLauncher;
+
G_END_DECLS
#endif /* __GIO_TYPES_H__ */
diff --git a/gio/glib-compile-resources.c b/gio/glib-compile-resources.c
index 6ec3076..d7dd580 100644
--- a/gio/glib-compile-resources.c
+++ b/gio/glib-compile-resources.c
@@ -297,9 +297,8 @@ end_element (GMarkupParseContext *context,
if (xml_stripblanks && xmllint != NULL)
{
- gchar *argv[8];
- int status, fd, argc;
- gchar *stderr_child = NULL;
+ int fd;
+ GSubprocess *proc;
tmp_file = g_strdup ("resource-XXXXXXXX");
if ((fd = g_mkstemp (tmp_file)) == -1)
@@ -315,43 +314,29 @@ end_element (GMarkupParseContext *context,
}
close (fd);
- argc = 0;
- argv[argc++] = (gchar *) xmllint;
- argv[argc++] = "--nonet";
- argv[argc++] = "--noblanks";
- argv[argc++] = "--output";
- argv[argc++] = tmp_file;
- argv[argc++] = real_file;
- argv[argc++] = NULL;
- g_assert (argc <= G_N_ELEMENTS (argv));
-
- if (!g_spawn_sync (NULL /* cwd */, argv, NULL /* envv */,
- G_SPAWN_STDOUT_TO_DEV_NULL,
- NULL, NULL, NULL, &stderr_child, &status, &my_error))
- {
- g_propagate_error (error, my_error);
- goto cleanup;
- }
-
- /* Ugly...we shoud probably just let stderr be inherited */
- if (!g_spawn_check_exit_status (status, NULL))
- {
- g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
- _("Error processing input file with xmllint:\n%s"), stderr_child);
- g_free (stderr_child);
+ proc = g_subprocess_new (G_SUBPROCESS_FLAGS_STDOUT_SILENCE, error,
+ xmllint, "--nonet", "--noblanks", "--output", tmp_file, real_file, NULL);
+ g_free (real_file);
+ real_file = NULL;
+
+ if (!proc)
+ goto cleanup;
+
+ if (!g_subprocess_wait_check (proc, NULL, error))
+ {
+ g_object_unref (proc);
goto cleanup;
}
- g_free (stderr_child);
- g_free (real_file);
+ g_object_unref (proc);
+
real_file = g_strdup (tmp_file);
}
if (to_pixdata)
{
- gchar *argv[4];
- gchar *stderr_child = NULL;
- int status, fd, argc;
+ int fd;
+ GSubprocess *proc;
if (gdk_pixbuf_pixdata == NULL)
{
@@ -375,31 +360,19 @@ end_element (GMarkupParseContext *context,
}
close (fd);
- argc = 0;
- argv[argc++] = (gchar *) gdk_pixbuf_pixdata;
- argv[argc++] = real_file;
- argv[argc++] = tmp_file2;
- argv[argc++] = NULL;
- g_assert (argc <= G_N_ELEMENTS (argv));
+ proc = g_subprocess_new (G_SUBPROCESS_FLAGS_STDOUT_SILENCE, error,
+ gdk_pixbuf_pixdata, real_file, tmp_file2, NULL);
+ g_free (real_file);
+ real_file = NULL;
- if (!g_spawn_sync (NULL /* cwd */, argv, NULL /* envv */,
- G_SPAWN_STDOUT_TO_DEV_NULL,
- NULL, NULL, NULL, &stderr_child, &status, &my_error))
- {
- g_propagate_error (error, my_error);
- goto cleanup;
- }
-
- if (!g_spawn_check_exit_status (status, NULL))
- {
- g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
- _("Error processing input file with to-pixdata:\n%s"), stderr_child);
- g_free (stderr_child);
+ if (!g_subprocess_wait_check (proc, NULL, error))
+ {
+ g_object_unref (proc);
goto cleanup;
- }
+ }
+
+ g_object_unref (proc);
- g_free (stderr_child);
- g_free (real_file);
real_file = g_strdup (tmp_file2);
}
}
diff --git a/gio/gsubprocess.c b/gio/gsubprocess.c
new file mode 100644
index 0000000..56ae921
--- /dev/null
+++ b/gio/gsubprocess.c
@@ -0,0 +1,1609 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright  2012 Red Hat, Inc.
+ * Copyright  2012-2013 Canonical Limited
+ *
+ * This program 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 licence or (at
+ * your option) any later version.
+ *
+ * See the included COPYING file for more information.
+ *
+ * Authors: Colin Walters <walters verbum org>
+ * Ryan Lortie <desrt desrt ca>
+ */
+
+/**
+ * SECTION:gsubprocess
+ * @title: GSubprocess
+ * @short_description: Child processes
+ * @see_also: #GSubprocessLauncher
+ *
+ * #GSubprocess allows the creation of and interaction with child
+ * processes.
+ *
+ * Processes can be communicated with using standard GIO-style APIs (ie:
+ * #GInputStream, #GOutputStream). There are GIO-style APIs to wait for
+ * process termination (ie: cancellable and with an asynchronous
+ * variant).
+ *
+ * There is an API to force a process to terminate, as well as a
+ * race-free API for sending UNIX signals to a subprocess.
+ *
+ * One major advantage that GIO brings over the core GLib library is
+ * comprehensive API for asynchronous I/O, such
+ * g_output_stream_splice_async(). This makes GSubprocess
+ * significantly more powerful and flexible than equivalent APIs in
+ * some other languages such as the <literal>subprocess.py</literal>
+ * included with Python. For example, using #GSubprocess one could
+ * create two child processes, reading standard output from the first,
+ * processing it, and writing to the input stream of the second, all
+ * without blocking the main loop.
+ *
+ * A powerful g_subprocess_communicate() API is provided similar to the
+ * <literal>communicate()</literal> method of
+ * <literal>subprocess.py</literal>. This enables very easy interaction
+ * with a subprocess that has been opened with pipes.
+ *
+ * #GSubprocess defaults to tight control over the file descriptors open
+ * in the child process, avoiding dangling-fd issues that are caused by
+ * a simple fork()/exec(). The only open file descriptors in the
+ * spawned process are ones that were explicitly specified by the
+ * #GSubprocess API (unless %G_SUBPROCESS_FLAGS_INHERIT_FDS was
+ * specified).
+ *
+ * #GSubprocess will quickly reap all child processes as they exit,
+ * avoiding "zombie processes" remaining around for long periods of
+ * time. g_subprocess_wait() can be used to wait for this to happen,
+ * but it will happen even without the call being explicitly made.
+ *
+ * As a matter of principle, #GSubprocess has no API that accepts
+ * shell-style space-separated strings. It will, however, match the
+ * typical shell behaviour of searching the PATH for executables that do
+ * not contain a directory separator in their name.
+ *
+ * #GSubprocess attempts to have a very simple API for most uses (ie:
+ * spawning a subprocess with arguments and support for most typical
+ * kinds of input and output redirection). See g_subprocess_new(). The
+ * #GSubprocessLauncher API is provided for more complicated cases
+ * (advanced types of redirection, environment variable manipulation,
+ * change of working directory, child setup functions, etc).
+ *
+ * A typical use of #GSubprocess will involve calling
+ * g_subprocess_new(), followed by g_subprocess_wait() or
+ * g_subprocess_wait_sync(). After the process exits, the status can be
+ * checked using functions such as g_subprocess_get_if_exited() (which
+ * are similar to the familiar WIFEXITED-style POSIX macros).
+ *
+ * Since: 2.36
+ **/
+
+#include "config.h"
+
+#include "gsubprocess.h"
+#include "gsubprocesslauncher-private.h"
+#include "gasyncresult.h"
+#include "giostream.h"
+#include "gmemoryinputstream.h"
+#include "glibintl.h"
+#include "glib-private.h"
+
+#include <string.h>
+#ifdef G_OS_UNIX
+#include <gio/gunixoutputstream.h>
+#include <gio/gfiledescriptorbased.h>
+#include <gio/gunixinputstream.h>
+#include <gstdio.h>
+#include <glib-unix.h>
+#include <fcntl.h>
+#endif
+#ifdef G_OS_WIN32
+#define _WIN32_WINNT 0x0500
+#include <windows.h>
+#include "giowin32-priv.h"
+#endif
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+#define COMMUNICATE_READ_SIZE 4096
+
+/* A GSubprocess can have two possible states: running and not.
+ *
+ * These two states are reflected by the value of 'pid'. If it is
+ * non-zero then the process is running, with that pid.
+ *
+ * When a GSubprocess is first created with g_object_new() it is not
+ * running. When it is finalized, it is also not running.
+ *
+ * During initable_init(), if the g_spawn() is successful then we
+ * immediately register a child watch and take an extra ref on the
+ * subprocess. That reference doesn't drop until the child has quit,
+ * which is why finalize can only happen in the non-running state. In
+ * the event that the g_spawn() failed we will still be finalizing a
+ * non-running GSubprocess (before returning from g_subprocess_new())
+ * with NULL.
+ *
+ * We make extensive use of the glib worker thread to guarantee
+ * race-free operation. As with all child watches, glib calls waitpid()
+ * in the worker thread. It reports the child exiting to us via the
+ * worker thread (which means that we can do synchronous waits without
+ * running a separate loop). We also send signals to the child process
+ * via the worker thread so that we don't race with waitpid() and
+ * accidentally send a signal to an already-reaped child.
+ */
+static void initable_iface_init (GInitableIface *initable_iface);
+
+typedef GObjectClass GSubprocessClass;
+
+struct _GSubprocess
+{
+ GObject parent;
+
+ /* only used during construction */
+ GSubprocessLauncher *launcher;
+ GSubprocessFlags flags;
+ gchar **argv;
+
+ /* state tracking variables */
+ gchar identifier[24];
+ int status;
+ GPid pid;
+
+ /* list of GTask */
+ GMutex pending_waits_lock;
+ GSList *pending_waits;
+
+ /* These are the streams created if a pipe is requested via flags. */
+ GOutputStream *stdin_pipe;
+ GInputStream *stdout_pipe;
+ GInputStream *stderr_pipe;
+};
+
+G_DEFINE_TYPE_WITH_CODE (GSubprocess, g_subprocess, G_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, initable_iface_init));
+
+enum
+{
+ PROP_0,
+ PROP_FLAGS,
+ PROP_ARGV,
+ N_PROPS
+};
+
+typedef struct
+{
+ gint fds[3];
+ GSpawnChildSetupFunc child_setup_func;
+ gpointer child_setup_data;
+} ChildData;
+
+static void
+child_setup (gpointer user_data)
+{
+ ChildData *child_data = user_data;
+ gint i;
+
+ /* We're on the child side now. "Rename" the file descriptors in
+ * child_data.fds[] to stdin/stdout/stderr.
+ *
+ * We don't close the originals. It's possible that the originals
+ * should not be closed and if they should be closed then they should
+ * have been created O_CLOEXEC.
+ */
+ for (i = 0; i < 3; i++)
+ if (child_data->fds[i] != -1 && child_data->fds[i] != i)
+ {
+ gint result;
+
+ do
+ result = dup2 (child_data->fds[i], i);
+ while (result == -1 && errno == EINTR);
+ }
+
+ if (child_data->child_setup_func)
+ child_data->child_setup_func (child_data->child_setup_data);
+}
+
+static GInputStream *
+platform_input_stream_from_spawn_fd (gint fd)
+{
+ if (fd < 0)
+ return NULL;
+
+#ifdef G_OS_UNIX
+ return g_unix_input_stream_new (fd, TRUE);
+#else
+ return g_win32_input_stream_new_from_fd (fd, TRUE);
+#endif
+}
+
+static GOutputStream *
+platform_output_stream_from_spawn_fd (gint fd)
+{
+ if (fd < 0)
+ return NULL;
+
+#ifdef G_OS_UNIX
+ return g_unix_output_stream_new (fd, TRUE);
+#else
+ return g_win32_output_stream_new_from_fd (fd, TRUE);
+#endif
+}
+
+#ifdef G_OS_UNIX
+static gint
+unix_open_file (const char *filename,
+ gint mode,
+ GError **error)
+{
+ gint my_fd;
+
+ my_fd = g_open (filename, mode | O_BINARY | O_CLOEXEC, 0666);
+
+ /* If we return -1 we should also set the error */
+ if (my_fd < 0)
+ {
+ gint saved_errno = errno;
+ char *display_name;
+
+ display_name = g_filename_display_name (filename);
+ g_set_error (error, G_IO_ERROR, g_io_error_from_errno (saved_errno),
+ _("Error opening file '%s': %s"), display_name,
+ g_strerror (saved_errno));
+ g_free (display_name);
+ /* fall through... */
+ }
+
+ return my_fd;
+}
+#endif
+
+static void
+g_subprocess_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GSubprocess *self = G_SUBPROCESS (object);
+
+ switch (prop_id)
+ {
+ case PROP_FLAGS:
+ self->flags = g_value_get_flags (value);
+ break;
+
+ case PROP_ARGV:
+ self->argv = g_value_dup_boxed (value);
+ break;
+
+ default:
+ g_assert_not_reached ();
+ }
+}
+
+static gboolean
+g_subprocess_exited (GPid pid,
+ gint status,
+ gpointer user_data)
+{
+ GSubprocess *self = user_data;
+ GSList *tasks;
+
+ g_assert (self->pid == pid);
+
+ g_mutex_lock (&self->pending_waits_lock);
+ self->status = status;
+ tasks = self->pending_waits;
+ self->pending_waits = NULL;
+ self->pid = 0;
+ g_mutex_unlock (&self->pending_waits_lock);
+
+ /* Signal anyone in g_subprocess_wait_async() to wake up now */
+ while (tasks)
+ {
+ g_task_return_boolean (tasks->data, TRUE);
+ tasks = g_slist_delete_link (tasks, tasks);
+ }
+
+ g_spawn_close_pid (pid);
+
+ return FALSE;
+}
+
+static gboolean
+initable_init (GInitable *initable,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GSubprocess *self = G_SUBPROCESS (initable);
+ ChildData child_data = { { -1, -1, -1 } };
+ gint *pipe_ptrs[3] = { NULL, NULL, NULL };
+ gint pipe_fds[3] = { -1, -1, -1 };
+ gint close_fds[3] = { -1, -1, -1 };
+ GSpawnFlags spawn_flags = 0;
+ gboolean success = FALSE;
+ gint i;
+
+ /* this is a programmer error */
+ if (!self->argv || !self->argv[0] || !self->argv[0][0])
+ return FALSE;
+
+ if (g_cancellable_set_error_if_cancelled (cancellable, error))
+ return FALSE;
+
+ /* We must setup the three fds that will end up in the child as stdin,
+ * stdout and stderr.
+ *
+ * First, stdin.
+ */
+ if (self->flags & G_SUBPROCESS_FLAGS_STDIN_INHERIT)
+ spawn_flags |= G_SPAWN_CHILD_INHERITS_STDIN;
+ else if (self->flags & G_SUBPROCESS_FLAGS_STDIN_PIPE)
+ pipe_ptrs[0] = &pipe_fds[0];
+#ifdef G_OS_UNIX
+ else if (self->launcher)
+ {
+ if (self->launcher->stdin_fd != -1)
+ child_data.fds[0] = self->launcher->stdin_fd;
+ else if (self->launcher->stdin_path != NULL)
+ {
+ child_data.fds[0] = close_fds[0] = unix_open_file (self->launcher->stdin_path, O_RDONLY, error);
+ if (child_data.fds[0] == -1)
+ goto out;
+ }
+ }
+#endif
+
+ /* Next, stdout. */
+ if (self->flags & G_SUBPROCESS_FLAGS_STDOUT_SILENCE)
+ spawn_flags |= G_SPAWN_STDOUT_TO_DEV_NULL;
+ else if (self->flags & G_SUBPROCESS_FLAGS_STDOUT_PIPE)
+ pipe_ptrs[1] = &pipe_fds[1];
+#ifdef G_OS_UNIX
+ else if (self->launcher)
+ {
+ if (self->launcher->stdout_fd != -1)
+ child_data.fds[1] = self->launcher->stdout_fd;
+ else if (self->launcher->stdout_path != NULL)
+ {
+ child_data.fds[1] = close_fds[1] = unix_open_file (self->launcher->stdout_path, O_CREAT | O_WRONLY, error);
+ if (child_data.fds[1] == -1)
+ goto out;
+ }
+ }
+#endif
+
+ /* Finally, stderr. */
+ if (self->flags & G_SUBPROCESS_FLAGS_STDERR_SILENCE)
+ spawn_flags |= G_SPAWN_STDERR_TO_DEV_NULL;
+ else if (self->flags & G_SUBPROCESS_FLAGS_STDERR_PIPE)
+ pipe_ptrs[2] = &pipe_fds[2];
+ else if (self->flags & G_SUBPROCESS_FLAGS_STDERR_MERGE)
+ /* This will work because stderr gets setup after stdout. */
+ child_data.fds[2] = 1;
+#ifdef G_OS_UNIX
+ else if (self->launcher)
+ {
+ if (self->launcher->stderr_fd != -1)
+ child_data.fds[2] = self->launcher->stderr_fd;
+ else if (self->launcher->stderr_path != NULL)
+ {
+ child_data.fds[2] = close_fds[2] = unix_open_file (self->launcher->stderr_path, O_CREAT | O_WRONLY, error);
+ if (child_data.fds[2] == -1)
+ goto out;
+ }
+ }
+#endif
+
+ /* argv0 has no '/' in it? We better do a PATH lookup. */
+ if (strchr (self->argv[0], G_DIR_SEPARATOR) == NULL)
+ {
+ if (self->launcher && self->launcher->path_from_envp)
+ spawn_flags |= G_SPAWN_SEARCH_PATH_FROM_ENVP;
+ else
+ spawn_flags |= G_SPAWN_SEARCH_PATH;
+ }
+
+ if (self->flags & G_SUBPROCESS_FLAGS_INHERIT_FDS)
+ spawn_flags |= G_SPAWN_LEAVE_DESCRIPTORS_OPEN;
+
+ spawn_flags |= G_SPAWN_DO_NOT_REAP_CHILD;
+ spawn_flags |= G_SPAWN_CLOEXEC_PIPES;
+
+ child_data.child_setup_func = self->launcher ? self->launcher->child_setup_func : NULL;
+ child_data.child_setup_data = self->launcher ? self->launcher->child_setup_user_data : NULL;
+ success = g_spawn_async_with_pipes (self->launcher ? self->launcher->cwd : NULL,
+ self->argv,
+ self->launcher ? self->launcher->envp : NULL,
+ spawn_flags,
+ child_setup, &child_data,
+ &self->pid,
+ pipe_ptrs[0], pipe_ptrs[1], pipe_ptrs[2],
+ error);
+ g_assert (success == (self->pid != 0));
+
+ {
+ guint64 identifier;
+ gint s;
+
+#ifdef G_OS_WIN32
+ identifier = (guint64) GetProcessId (self->pid);
+#else
+ identifier = (guint64) self->pid;
+#endif
+
+ s = snprintf (self->identifier, sizeof self->identifier, "%"G_GUINT64_FORMAT, identifier);
+ g_assert (0 < s && s < sizeof self->identifier);
+ }
+
+ /* Start attempting to reap the child immediately */
+ if (success)
+ {
+ GMainContext *worker_context;
+ GSource *source;
+
+ worker_context = GLIB_PRIVATE_CALL (g_get_worker_context) ();
+ source = g_child_watch_source_new (self->pid);
+ g_source_set_callback (source, (GSourceFunc) g_subprocess_exited, g_object_ref (self), g_object_unref);
+ g_source_attach (source, worker_context);
+ g_source_unref (source);
+ }
+
+out:
+ /* we don't need this past init... */
+ self->launcher = NULL;
+
+ for (i = 0; i < 3; i++)
+ if (close_fds[i] != -1)
+ close (close_fds[i]);
+
+ self->stdin_pipe = platform_output_stream_from_spawn_fd (pipe_fds[0]);
+ self->stdout_pipe = platform_input_stream_from_spawn_fd (pipe_fds[1]);
+ self->stderr_pipe = platform_input_stream_from_spawn_fd (pipe_fds[2]);
+
+ return success;
+}
+
+static void
+g_subprocess_finalize (GObject *object)
+{
+ GSubprocess *self = G_SUBPROCESS (object);
+
+ g_assert (self->pending_waits == NULL);
+ g_assert (self->pid == 0);
+
+ g_clear_object (&self->stdin_pipe);
+ g_clear_object (&self->stdout_pipe);
+ g_clear_object (&self->stderr_pipe);
+ g_free (self->argv);
+
+ G_OBJECT_CLASS (g_subprocess_parent_class)->finalize (object);
+}
+
+static void
+g_subprocess_init (GSubprocess *self)
+{
+}
+
+static void
+initable_iface_init (GInitableIface *initable_iface)
+{
+ initable_iface->init = initable_init;
+}
+
+static void
+g_subprocess_class_init (GSubprocessClass *class)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (class);
+
+ gobject_class->finalize = g_subprocess_finalize;
+ gobject_class->set_property = g_subprocess_set_property;
+
+ g_object_class_install_property (gobject_class, PROP_FLAGS,
+ g_param_spec_flags ("flags", P_("Flags"), P_("Subprocess flags"),
+ G_TYPE_SUBPROCESS_FLAGS, 0, G_PARAM_WRITABLE |
+ G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_ARGV,
+ g_param_spec_boxed ("argv", P_("Arguments"), P_("Argument vector"),
+ G_TYPE_STRV, G_PARAM_WRITABLE |
+ G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
+}
+
+/**
+ * g_subprocess_new: (skip)
+ *
+ * Create a new process with the given flags and varargs argument list.
+ *
+ * The argument list must be terminated with %NULL.
+ *
+ * Returns: A newly created #GSubprocess, or %NULL on error (and @error
+ * will be set)
+ *
+ * Since: 2.36
+ */
+GSubprocess *
+g_subprocess_new (GSubprocessFlags flags,
+ GError **error,
+ const gchar *argv0,
+ ...)
+{
+ GSubprocess *result;
+ GPtrArray *args;
+ const gchar *arg;
+ va_list ap;
+
+ g_return_val_if_fail (argv0 != NULL && argv0[0] != '\0', NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ args = g_ptr_array_new ();
+
+ va_start (ap, argv0);
+ g_ptr_array_add (args, (gchar *) argv0);
+ while ((arg = va_arg (ap, const gchar *)))
+ g_ptr_array_add (args, (gchar *) arg);
+ g_ptr_array_add (args, NULL);
+
+ result = g_subprocess_newv ((const gchar * const *) args->pdata, flags, error);
+
+ g_ptr_array_free (args, TRUE);
+
+ return result;
+}
+
+/**
+ * g_subprocess_newv:
+ *
+ * Create a new process with the given flags and argument list.
+ *
+ * The argument list is expected to be %NULL-terminated.
+ *
+ * Returns: A newly created #GSubprocess, or %NULL on error (and @error
+ * will be set)
+ *
+ * Since: 2.36
+ * Rename to: g_subprocess_new
+ */
+GSubprocess *
+g_subprocess_newv (const gchar * const *argv,
+ GSubprocessFlags flags,
+ GError **error)
+{
+ g_return_val_if_fail (argv != NULL && argv[0] != NULL && argv[0][0] != '\0', NULL);
+
+ return g_initable_new (G_TYPE_SUBPROCESS, NULL, error,
+ "argv", argv,
+ "flags", flags,
+ NULL);
+}
+
+const gchar *
+g_subprocess_get_identifier (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), NULL);
+
+ if (self->pid)
+ return self->identifier;
+ else
+ return NULL;
+}
+
+GOutputStream *
+g_subprocess_get_stdin_pipe (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), NULL);
+ g_return_val_if_fail (self->stdin_pipe, NULL);
+
+ return self->stdin_pipe;
+}
+
+GInputStream *
+g_subprocess_get_stdout_pipe (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), NULL);
+ g_return_val_if_fail (self->stdout_pipe, NULL);
+
+ return self->stdout_pipe;
+}
+
+GInputStream *
+g_subprocess_get_stderr_pipe (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), NULL);
+ g_return_val_if_fail (self->stderr_pipe, NULL);
+
+ return self->stderr_pipe;
+}
+
+static void
+g_subprocess_wait_cancelled (GCancellable *cancellable,
+ gpointer user_data)
+{
+ GTask *task = user_data;
+ GSubprocess *self;
+
+ self = g_task_get_source_object (task);
+
+ g_mutex_lock (&self->pending_waits_lock);
+ self->pending_waits = g_slist_remove (self->pending_waits, task);
+ g_mutex_unlock (&self->pending_waits_lock);
+
+ g_task_return_boolean (task, FALSE);
+ g_object_unref (task);
+}
+
+void
+g_subprocess_wait_async (GSubprocess *self,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GTask *task;
+
+ task = g_task_new (self, cancellable, callback, user_data);
+
+ g_mutex_lock (&self->pending_waits_lock);
+ if (self->pid)
+ {
+ /* Only bother with cancellable if we're putting it in the list.
+ * If not, it's going to dispatch immediately anyway and we will
+ * see the cancellation in the _finish().
+ */
+ if (cancellable)
+ g_signal_connect_object (cancellable, "cancelled", G_CALLBACK (g_subprocess_wait_cancelled), task, 0);
+
+ self->pending_waits = g_slist_prepend (self->pending_waits, task);
+ task = NULL;
+ }
+ g_mutex_unlock (&self->pending_waits_lock);
+
+ /* If we still have task then it's because did_exit is already TRUE */
+ if (task != NULL)
+ {
+ g_task_return_boolean (task, TRUE);
+ g_object_unref (task);
+ }
+}
+
+gboolean
+g_subprocess_wait_finish (GSubprocess *self,
+ GAsyncResult *result,
+ GError **error)
+{
+ return g_task_propagate_boolean (G_TASK (result), error);
+}
+
+/* Some generic helpers for emulating synchronous operations using async
+ * operations.
+ */
+static void
+g_subprocess_sync_setup (void)
+{
+ g_main_context_push_thread_default (g_main_context_new ());
+}
+
+static void
+g_subprocess_sync_done (GObject *source_object,
+ GAsyncResult *result,
+ gpointer user_data)
+{
+ GAsyncResult **result_ptr = user_data;
+
+ *result_ptr = g_object_ref (result);
+}
+
+static void
+g_subprocess_sync_complete (GAsyncResult **result)
+{
+ GMainContext *context = g_main_context_get_thread_default ();
+
+ while (!*result)
+ g_main_context_iteration (context, TRUE);
+
+ g_main_context_pop_thread_default (context);
+ g_main_context_unref (context);
+}
+
+/**
+ * g_subprocess_wait:
+ * @self: a #GSubprocess
+ * @cancellable: a #GCancellable
+ * @error: a #GError
+ *
+ * Synchronously wait for the subprocess to terminate, returning the
+ * status code in @out_exit_status. See the documentation of
+ * g_spawn_check_exit_status() for how to interpret it. Note that if
+ * @error is set, then @out_exit_status will be left uninitialized.
+ *
+ * Returns: %TRUE on success, %FALSE if @cancellable was cancelled
+ *
+ * Since: 2.36
+ */
+gboolean
+g_subprocess_wait (GSubprocess *self,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GAsyncResult *result = NULL;
+ gboolean success;
+
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), FALSE);
+
+ /* Synchronous waits are actually the 'more difficult' case because we
+ * need to deal with the possibility of cancellation. That more or
+ * less implies that we need a main context (to dispatch either of the
+ * possible reasons for the operation ending).
+ *
+ * So we make one and then do this async...
+ */
+
+ if (g_cancellable_set_error_if_cancelled (cancellable, error))
+ return FALSE;
+
+ /* We can shortcut in the case that the process already quit (but only
+ * after we checked the cancellable).
+ */
+ if (self->pid == 0)
+ return TRUE;
+
+ /* Otherwise, we need to do this the long way... */
+ g_subprocess_sync_setup ();
+ g_subprocess_wait_async (self, cancellable, g_subprocess_sync_done, &result);
+ g_subprocess_sync_complete (&result);
+ success = g_subprocess_wait_finish (self, result, error);
+ g_object_unref (result);
+
+ return success;
+}
+
+/**
+ * g_subprocess_wait_sync_check:
+ * @self: a #GSubprocess
+ * @cancellable: a #GCancellable
+ * @error: a #GError
+ *
+ * Combines g_subprocess_wait_sync() with g_spawn_check_exit_status().
+ *
+ * Returns: %TRUE on success, %FALSE if process exited abnormally, or @cancellable was cancelled
+ *
+ * Since: 2.36
+ */
+gboolean
+g_subprocess_wait_check (GSubprocess *self,
+ GCancellable *cancellable,
+ GError **error)
+{
+ return g_subprocess_wait (self, cancellable, error) &&
+ g_spawn_check_exit_status (self->status, error);
+}
+
+void
+g_subprocess_wait_check_async (GSubprocess *self,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_subprocess_wait_async (self, cancellable, callback, user_data);
+}
+
+gboolean
+g_subprocess_wait_check_finish (GSubprocess *self,
+ GAsyncResult *result,
+ GError **error)
+{
+ return g_subprocess_wait_finish (self, result, error) &&
+ g_spawn_check_exit_status (self->status, error);
+}
+
+#ifdef G_OS_UNIX
+typedef struct
+{
+ GSubprocess *subprocess;
+ gint signalnum;
+} SignalRecord;
+
+static gboolean
+g_subprocess_actually_send_signal (gpointer user_data)
+{
+ SignalRecord *signal_record = user_data;
+
+ /* The pid is set to zero from the worker thread as well, so we don't
+ * need to take a lock in order to prevent it from changing under us.
+ */
+ if (signal_record->subprocess->pid)
+ kill (signal_record->subprocess->pid, signal_record->signalnum);
+
+ g_object_unref (signal_record->subprocess);
+
+ g_slice_free (SignalRecord, signal_record);
+
+ return FALSE;
+}
+
+static void
+g_subprocess_dispatch_signal (GSubprocess *self,
+ gint signalnum)
+{
+ SignalRecord signal_record = { g_object_ref (self), signalnum };
+
+ g_return_if_fail (G_IS_SUBPROCESS (self));
+
+ /* This MUST be a lower priority than the priority that the child
+ * watch source uses in initable_init().
+ *
+ * Reaping processes, reporting the results back to GSubprocess and
+ * sending signals is all done in the glib worker thread. We cannot
+ * have a kill() done after the reap and before the report without
+ * risking killing a process that's no longer there so the kill()
+ * needs to have the lower priority.
+ *
+ * G_PRIORITY_HIGH_IDLE is lower priority than G_PRIORITY_DEFAULT.
+ */
+ g_main_context_invoke_full (GLIB_PRIVATE_CALL (g_get_worker_context) (),
+ G_PRIORITY_HIGH_IDLE,
+ g_subprocess_actually_send_signal,
+ g_slice_dup (SignalRecord, &signal_record),
+ NULL);
+}
+
+/**
+ * g_subprocess_send_signal:
+ * @self: a #GSubprocess
+ * @signal_num: the signal number to send
+ *
+ * Sends the UNIX signal @signal_num to the subprocess, if it is still
+ * running.
+ *
+ * This API is race-free. If the subprocess has terminated, it will not
+ * be signalled.
+ *
+ * This API is not available on Windows.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_send_signal (GSubprocess *self,
+ gint signal_num)
+{
+ g_return_if_fail (G_IS_SUBPROCESS (self));
+
+ g_subprocess_dispatch_signal (self, signal_num);
+}
+#endif
+
+/**
+ * g_subprocess_force_exit:
+ * @self: a #GSubprocess
+ *
+ * Use an operating-system specific method to attempt an immediate,
+ * forceful termination of the process. There is no mechanism to
+ * determine whether or not the request itself was successful;
+ * however, you can use g_subprocess_wait() to monitor the status of
+ * the process after calling this function.
+ *
+ * On Unix, this function sends %SIGKILL.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_force_exit (GSubprocess *self)
+{
+ g_return_if_fail (G_IS_SUBPROCESS (self));
+
+#ifdef G_OS_UNIX
+ g_subprocess_dispatch_signal (self, SIGKILL);
+#else
+ TerminateProcess (self->pid, 1);
+#endif
+}
+
+/**
+ * g_subprocess_get_status:
+ * @self: a #GSubprocess
+ *
+ * Gets the raw status code of the process, as from waitpid().
+ *
+ * This value has no particular meaning, but it can be used with the
+ * macros defined by the system headers such as WIFEXITED. It can also
+ * be used with g_spawn_check_exit_status().
+ *
+ * It is more likely that you want to use g_subprocess_get_if_exited()
+ * followed by g_subprocess_get_exit_status().
+ *
+ * It is an error to call this function before g_subprocess_wait() has
+ * returned.
+ *
+ * Returns: the (meaningless) waitpid() exit status from the kernel
+ *
+ * Since: 2.36
+ **/
+gint
+g_subprocess_get_status (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), FALSE);
+ g_return_val_if_fail (self->pid == 0, FALSE);
+
+ return self->status;
+}
+
+/**
+ * g_subprocess_get_successful:
+ * @self: a #GSubprocess
+ *
+ * Checks if the process was "successful". A process is considered
+ * successful if it exited cleanly with an exit status of 0, either by
+ * way of the exit() system call or return from main().
+ *
+ * It is an error to call this function before g_subprocess_wait() has
+ * returned.
+ *
+ * Returns: %TRUE if the process exited cleanly with a exit status of 0
+ *
+ * Since: 2.36
+ **/
+gboolean
+g_subprocess_get_successful (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), FALSE);
+ g_return_val_if_fail (self->pid == 0, FALSE);
+
+ return WIFEXITED (self->status) && WEXITSTATUS (self->status) == 0;
+}
+
+/**
+ * g_subprocess_get_if_exited:
+ * @self: a #GSubprocess
+ *
+ * Check if the given subprocess exited normally (ie: by way of exit()
+ * or return from main()).
+ *
+ * This is equivalent to the system WIFEXITED macro.
+ *
+ * It is an error to call this function before g_subprocess_wait() has
+ * returned.
+ *
+ * Returns: %TRUE if the case of a normal exit
+ *
+ * Since: 2.36
+ **/
+gboolean
+g_subprocess_get_if_exited (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), FALSE);
+ g_return_val_if_fail (self->pid == 0, FALSE);
+
+ return WIFEXITED (self->status);
+}
+
+/**
+ * g_subprocess_get_exit_status:
+ * @self: a #GSubprocess
+ *
+ * Check the exit status of the subprocess, given that it exited
+ * normally. This is the value passed to the exit() system call or the
+ * return value from main.
+ *
+ * This is equivalent to the system WEXITSTATUS macro.
+ *
+ * It is an error to call this function before g_subprocess_wait() and
+ * unless g_subprocess_get_if_exited() returned %TRUE.
+ *
+ * Returns: the exit status
+ *
+ * Since: 2.36
+ **/
+gint
+g_subprocess_get_exit_status (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), 1);
+ g_return_val_if_fail (self->pid == 0, 1);
+ g_return_val_if_fail (WIFEXITED (self->status), 1);
+
+ return WEXITSTATUS (self->status);
+}
+
+/**
+ * g_subprocess_get_if_signaled:
+ * @self: a #GSubprocess
+ *
+ * Check if the given subprocess terminated in response to a signal.
+ *
+ * This is equivalent to the system WIFSIGNALED macro.
+ *
+ * It is an error to call this function before g_subprocess_wait() has
+ * returned.
+ *
+ * Returns: %TRUE if the case of termination due to a signal
+ *
+ * Since: 2.36
+ **/
+gboolean
+g_subprocess_get_if_signaled (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), FALSE);
+ g_return_val_if_fail (self->pid == 0, FALSE);
+
+ return WIFSIGNALED (self->status);
+}
+
+/**
+ * g_subprocess_get_term_sig:
+ * @self: a #GSubprocess
+ *
+ * Get the signal number that caused the subprocess to terminate, given
+ * that it terminated due to a signal.
+ *
+ * This is equivalent to the system WTERMSIG macro.
+ *
+ * It is an error to call this function before g_subprocess_wait() and
+ * unless g_subprocess_get_if_signaled() returned %TRUE.
+ *
+ * Returns: the signal causing termination
+ *
+ * Since: 2.36
+ **/
+gint
+g_subprocess_get_term_sig (GSubprocess *self)
+{
+ g_return_val_if_fail (G_IS_SUBPROCESS (self), 0);
+ g_return_val_if_fail (self->pid == 0, 0);
+ g_return_val_if_fail (WIFSIGNALED (self->status), 0);
+
+ return WTERMSIG (self->status);
+}
+
+/*< private >*/
+void
+g_subprocess_set_launcher (GSubprocess *subprocess,
+ GSubprocessLauncher *launcher)
+{
+ subprocess->launcher = launcher;
+}
+
+
+/* g_subprocess_communicate implementation below:
+ *
+ * This is a tough problem. We have to watch 5 things at the same time:
+ *
+ * - writing to stdin made progress
+ * - reading from stdout made progress
+ * - reading from stderr made progress
+ * - process terminated
+ * - cancellable being cancelled by caller
+ *
+ * We use a GMainContext for all of these (either as async function
+ * calls or as a GSource (in the case of the cancellable). That way at
+ * least we don't have to worry about threading.
+ *
+ * For the sync case we use the usual trick of creating a private main
+ * context and iterating it until completion.
+ *
+ * It's very possible that the process will dump a lot of data to stdout
+ * just before it quits, so we can easily have data to read from stdout
+ * and see the process has terminated at the same time. We want to make
+ * sure that we read all of the data from the pipes first, though, so we
+ * do IO operations at a higher priority than the wait operation (which
+ * is at G_IO_PRIORITY_DEFAULT). Even in the case that we have to do
+ * multiple reads to get this data, the pipe() will always be polling
+ * as ready and with the async result for the read at a higher priority,
+ * the main context will not dispatch the completion for the wait().
+ *
+ * We keep our own private GCancellable. In the event that any of the
+ * above suffers from an error condition (including the user cancelling
+ * their cancellable) we immediately dispatch the GTask with the error
+ * result and fire our cancellable to cleanup any pending operations.
+ * In the case that the error is that the user's cancellable was fired,
+ * it's vaguely wasteful to report an error because GTask will handle
+ * this automatically, so we just return FALSE.
+ *
+ * We let each pending sub-operation take a ref on the GTask of the
+ * communicate operation. We have to be careful that we don't report
+ * the task completion more than once, though, so we keep a flag for
+ * that.
+ */
+typedef struct
+{
+ const gchar *stdin_data;
+ gsize stdin_length;
+ gsize stdin_offset;
+
+ /* Not actually GString. Just borrowing the struct. */
+ GString stdout_string;
+ GString stderr_string;
+
+ GBytes *unref_this_later;
+ gchar *free_this_later;
+
+ GCancellable *cancellable;
+ GSource *cancellable_source;
+
+ gboolean completion_reported;
+} CommunicateState;
+
+static void
+ensure_string_allocated (GString *str)
+{
+ /* This will work because the first time we will set it to
+ * COMMUNICATE_READ_SIZE and then all future attempts will grow by at
+ * least that much (as a result of multiplying the existing value by
+ * 2).
+ */
+ if (str->len + COMMUNICATE_READ_SIZE > str->allocated_len)
+ {
+ str->allocated_len = MAX(COMMUNICATE_READ_SIZE, str->allocated_len * 2);
+ str->str = g_realloc (str->str, str->allocated_len);
+ }
+}
+
+static void
+g_subprocess_communicate_made_progress (GObject *source_object,
+ GAsyncResult *result,
+ gpointer user_data)
+{
+ CommunicateState *state;
+ GSubprocess *subprocess;
+ GError *error = NULL;
+ gpointer source;
+ GTask *task;
+
+ g_assert (source_object != NULL);
+
+ task = user_data;
+ subprocess = g_task_get_source_object (task);
+ state = g_task_get_task_data (task);
+ source = source_object;
+
+ if (source == subprocess->stdin_pipe)
+ {
+ gssize s;
+
+ s = g_output_stream_write_finish (subprocess->stdin_pipe, result, &error);
+ g_assert (s != 0);
+
+ if (s != -1)
+ {
+ g_assert (0 < s && s < state->stdin_length);
+ g_assert (state->stdin_offset + s <= state->stdin_length);
+ state->stdin_offset += s;
+
+ if (state->stdin_offset != state->stdin_length)
+ {
+ /* write more... */
+ g_output_stream_write_async (subprocess->stdin_pipe,
+ state->stdin_data + state->stdin_offset,
+ state->stdin_length - state->stdin_offset,
+ G_PRIORITY_DEFAULT,
+ state->cancellable,
+ g_subprocess_communicate_made_progress,
+ task);
+ return;
+ }
+ }
+ }
+ else if (source == subprocess->stdout_pipe)
+ {
+ gssize s;
+
+ s = g_input_stream_read_finish (subprocess->stdout_pipe, result, &error);
+ g_assert (s <= COMMUNICATE_READ_SIZE);
+
+ /* If s is 0 then we have EOF and should not read more, but should
+ * continue to try the other event sources.
+ *
+ * If s is -1 then error will be set and we deal with that below.
+ *
+ * Only have to handle the result > 0 case.
+ */
+ if (s > 0)
+ {
+ state->stdout_string.len += s;
+
+ ensure_string_allocated (&state->stdout_string);
+
+ g_input_stream_read_async (subprocess->stdout_pipe, state->stdout_string.str + state->stdout_string.len,
+ COMMUNICATE_READ_SIZE, G_PRIORITY_DEFAULT - 1, state->cancellable,
+ g_subprocess_communicate_made_progress, g_object_ref (task));
+ return;
+ }
+ }
+ else if (source == subprocess->stderr_pipe)
+ {
+ gssize s;
+
+ s = g_input_stream_read_finish (subprocess->stdout_pipe, result, &error);
+ g_assert (s <= COMMUNICATE_READ_SIZE);
+
+ /* As above... */
+ if (s > 0)
+ {
+ state->stderr_string.len += s;
+
+ ensure_string_allocated (&state->stderr_string);
+
+ g_input_stream_read_async (subprocess->stderr_pipe, state->stderr_string.str + state->stderr_string.len,
+ COMMUNICATE_READ_SIZE, G_PRIORITY_DEFAULT - 1, state->cancellable,
+ g_subprocess_communicate_made_progress, g_object_ref (task));
+ return;
+ }
+ }
+ else if (source == subprocess)
+ {
+ if (g_subprocess_wait_finish (subprocess, result, &error))
+ {
+ /* It is not possible that we had a successful completion if
+ * the task was already completed because we flag our own
+ * cancellable in that case.
+ */
+ g_assert (!state->completion_reported);
+ state->completion_reported = TRUE;
+ g_task_return_boolean (task, TRUE);
+ }
+ }
+ else
+ g_assert_not_reached ();
+
+ if (error)
+ {
+ /* Only report the first error we see.
+ *
+ * We might be seeing an error as a result of the cancellation
+ * done when the process quits.
+ */
+ if (!state->completion_reported)
+ {
+ state->completion_reported = TRUE;
+
+ g_cancellable_cancel (state->cancellable);
+ g_task_return_error (task, error);
+ }
+ else
+ g_error_free (error);
+ }
+
+ g_object_unref (task);
+}
+
+static gboolean
+g_subprocess_communicate_cancelled (gpointer user_data)
+{
+ CommunicateState *state = user_data;
+
+ g_cancellable_cancel (state->cancellable);
+
+ return FALSE;
+}
+
+static void
+g_subprocess_communicate_state_free (gpointer data)
+{
+ CommunicateState *state = data;
+
+ g_free (state->stdout_string.str);
+ g_free (state->stderr_string.str);
+ g_free (state->free_this_later);
+
+ if (!g_source_is_destroyed (state->cancellable_source))
+ g_source_destroy (state->cancellable_source);
+ g_source_unref (state->cancellable_source);
+
+ if (state->unref_this_later)
+ g_bytes_unref (state->unref_this_later);
+
+ g_slice_free (CommunicateState, state);
+}
+
+static CommunicateState *
+g_subprocess_communicate_internal (GSubprocess *subprocess,
+ GBytes *stdin_bytes,
+ const gchar *stdin_data,
+ gssize stdin_length,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ CommunicateState *state;
+ GTask *task;
+
+ task = g_task_new (subprocess, cancellable, callback, user_data);
+ state = g_slice_new0 (CommunicateState);
+ g_task_set_task_data (task, state, g_subprocess_communicate_state_free);
+
+ if (stdin_bytes)
+ {
+ g_assert (!stdin_data && !stdin_length && (subprocess->flags & G_SUBPROCESS_FLAGS_STDIN_PIPE));
+ state->stdin_data = g_bytes_get_data (stdin_bytes, &state->stdin_length);
+ state->unref_this_later = g_bytes_ref (stdin_bytes);
+ }
+ else if (stdin_data)
+ {
+ g_assert (subprocess->flags & G_SUBPROCESS_FLAGS_STDIN_PIPE);
+ if (stdin_length < 0)
+ state->stdin_length = strlen (stdin_data);
+ else
+ state->stdin_length = stdin_length;
+
+ state->free_this_later = g_memdup (stdin_data, state->stdin_length);
+ state->stdin_data = state->free_this_later;
+ }
+
+ state->cancellable = g_cancellable_new ();
+
+ if (cancellable)
+ {
+ state->cancellable_source = g_cancellable_source_new (cancellable);
+ /* No ref held here, but we unref the source from state's free function */
+ g_source_set_callback (state->cancellable_source, g_subprocess_communicate_cancelled, state, NULL);
+ g_source_attach (state->cancellable_source, g_main_context_get_thread_default ());
+ }
+
+ if (subprocess->stdin_pipe && state->stdin_length)
+ g_output_stream_write_async (subprocess->stdin_pipe, state->stdin_data, state->stdin_length, G_PRIORITY_DEFAULT,
+ state->cancellable, g_subprocess_communicate_made_progress, g_object_ref (task));
+
+ if (subprocess->stdout_pipe)
+ {
+ ensure_string_allocated (&state->stdout_string);
+
+ g_input_stream_read_async (subprocess->stdout_pipe, state->stdout_string.str, COMMUNICATE_READ_SIZE,
+ G_PRIORITY_DEFAULT - 1, state->cancellable,
+ g_subprocess_communicate_made_progress, g_object_ref (task));
+ }
+
+ if (subprocess->stderr_pipe)
+ {
+ ensure_string_allocated (&state->stderr_string);
+
+ g_input_stream_read_async (subprocess->stderr_pipe, state->stderr_string.str, COMMUNICATE_READ_SIZE,
+ G_PRIORITY_DEFAULT - 1, state->cancellable,
+ g_subprocess_communicate_made_progress, g_object_ref (task));
+ }
+
+ g_subprocess_wait_async (subprocess, state->cancellable,
+ g_subprocess_communicate_made_progress, g_object_ref (task));
+
+ return state;
+}
+
+/**
+ * g_Subprocess_communicate:
+ * @self: a #GSubprocess
+ * @stdin_data: data to send to the stdin of the subprocess, or %NULL
+ * @stdin_length: the length of @stdin_data, or -1
+ * @cancellable: a #GCancellable
+ * @stdout_data: (out): data read from the subprocess stdout
+ * @stdout_length: (out): the length of @stdout_data returned
+ * @stderr_data: (out): data read from the subprocess stderr
+ * @stderr_length: (out): the length of @stderr_data returned
+ * @error: a pointer to a %NULL #GError pointer, or %NULL
+ *
+ * Communicate with the subprocess until it terminates.
+ *
+ * If @stdin_data is given, the subprocess must have been created with
+ * %G_SUBPROCESS_FLAGS_STDIN_PIPE. The given data is fed to the
+ * stdin of the subprocess and the pipe is closed (ie: EOF).
+ *
+ * At the same time (as not to cause blocking when dealing with large
+ * amounts of data), if %G_SUBPROCESS_FLAGS_STDOUT_PIPE or
+ * %G_SUBPROCESS_FLAGS_STDERR_PIPE were used, reads from those streams.
+ * The data that was read is returned in @stdout_data and/or
+ * @stderr_data.
+ *
+ * @stdin_length specifies the length of @stdin_data. If it is -1 then
+ * @stdin_data is taken to be a nul-terminated string. If the
+ * subprocess was not created with %G_SUBPROCESS_FLAGS_STDIN_PIPE then
+ * you must pass %NULL for @stdin_data and 0 for @stdin_length.
+ *
+ * If the subprocess was created with %G_SUBPROCESS_FLAGS_STDOUT_PIPE,
+ * @stdout_data will contain the data read from stdout, plus a
+ * terminating nul character; it will always be non-%NULL (ie:
+ * containing at least the nul). @stdout_length will be the length of
+ * the data, excluding the added nul. For subprocesses not created with
+ * %G_SUBPROCESS_FLAGS_STDOUT_PIPE, @stdout_data will be set to %NULL
+ * and @stdout_length will be set to zero. stderr is handled in the
+ * same way.
+ *
+ * As usual, any output variable may be given as %NULL to ignore it.
+ *
+ * If you desire the stdout and stderr data to be interleaved, create
+ * the subprocess with %G_SUBPROCESS_FLAGS_STDOUT_PIPE and
+ * %G_SUBPROCESS_FLAGS_STDERR_MERGE. The merged result will be returned
+ * in @stdout_data and @stderr_data will be set to %NULL.
+ *
+ * In case of any error (including cancellation), %FALSE will be
+ * returned with @error set. Some or all of the stdin data may have
+ * been written. Any stdout or stderr data that has been read will be
+ * discarded. None of the out variables (aside from @error) will have
+ * been set to anything in particular and should not be inspected.
+ *
+ * In the case that %TRUE is returned, the subprocess has exited and the
+ * exit status inspection APIs (eg: g_subprocess_get_if_exited(),
+ * g_subprocess_get_exit_status()) may be used.
+ *
+ * You should not attempt to use any of the subprocess pipes after
+ * starting this function, since they may be left in strange states,
+ * even if the operation was cancelled. You should especially not
+ * attempt to interact with the pipes while the operation is in progress
+ * (either from another thread or if using the asynchronous version).
+ *
+ * Returns: %TRUE if successful
+ *
+ * Since: 2.36
+ **/
+gboolean
+g_subprocess_communicate (GSubprocess *subprocess,
+ const gchar *stdin_data,
+ gssize stdin_length,
+ GCancellable *cancellable,
+ gchar **stdout_data,
+ gsize *stdout_length,
+ gchar **stderr_data,
+ gsize *stderr_length,
+ GError **error)
+{
+ GAsyncResult *result = NULL;
+ gboolean success;
+
+ g_return_val_if_fail (G_IS_SUBPROCESS (subprocess), FALSE);
+ g_return_val_if_fail (stdin_length == 0 || stdin_data != NULL, FALSE);
+ g_return_val_if_fail (stdin_data == NULL || (subprocess->flags & G_SUBPROCESS_FLAGS_STDIN_PIPE), FALSE);
+ g_return_val_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable), FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ g_subprocess_sync_setup ();
+ g_subprocess_communicate_internal (subprocess, NULL, stdin_data, stdin_length,
+ cancellable, g_subprocess_sync_done, &result);
+ g_subprocess_sync_complete (&result);
+ success = g_subprocess_communicate_finish (subprocess, result,
+ stdout_data, stdout_length,
+ stderr_data, stderr_length, error);
+ g_object_unref (result);
+
+ return success;
+}
+
+void
+g_subprocess_communicate_async (GSubprocess *subprocess,
+ const gchar *stdin_data,
+ gssize stdin_length,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_return_if_fail (G_IS_SUBPROCESS (subprocess));
+ g_return_if_fail (stdin_length == 0 || stdin_data != NULL);
+ g_return_if_fail (stdin_data == NULL || (subprocess->flags & G_SUBPROCESS_FLAGS_STDIN_PIPE));
+ g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
+
+ g_subprocess_communicate_internal (subprocess, NULL, stdin_data, stdin_length, cancellable, callback, user_data);
+}
+
+gboolean
+g_subprocess_communicate_finish (GSubprocess *subprocess,
+ GAsyncResult *result,
+ gchar **stdout_data,
+ gsize *stdout_length,
+ gchar **stderr_data,
+ gsize *stderr_length,
+ GError **error)
+{
+ CommunicateState *state;
+ gboolean success;
+ GTask *task;
+
+ g_return_val_if_fail (G_IS_SUBPROCESS (subprocess), FALSE);
+ g_return_val_if_fail (g_task_is_valid (result, subprocess), FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ task = G_TASK (result);
+ state = g_task_get_task_data (task);
+
+ success = g_task_propagate_boolean (task, error);
+
+ if (success)
+ {
+ if (stdout_data)
+ {
+ gchar *string;
+
+ string = g_realloc (state->stdout_string.str, state->stdout_string.len + 1);
+ string[state->stdout_string.len] = '\0';
+ state->stdout_string.str = NULL;
+ *stdout_data = string;
+ }
+
+ if (stdout_length)
+ *stdout_length = state->stdout_string.len;
+
+ if (stderr_data)
+ {
+ gchar *string;
+
+ string = g_realloc (state->stderr_string.str, state->stderr_string.len + 1);
+ string[state->stderr_string.len] = '\0';
+ state->stderr_string.str = NULL;
+ *stderr_data = string;
+ }
+
+ if (stderr_length)
+ *stderr_length = state->stderr_string.len;
+ }
+
+ return success;
+}
+
+gboolean
+g_subprocess_communicate_bytes (GSubprocess *subprocess,
+ GBytes *stdin_bytes,
+ GCancellable *cancellable,
+ GBytes **stdout_bytes,
+ GBytes **stderr_bytes,
+ GError **error)
+{
+ GAsyncResult *result = NULL;
+ gboolean success;
+
+ g_return_val_if_fail (G_IS_SUBPROCESS (subprocess), FALSE);
+ g_return_val_if_fail (stdin_bytes == NULL || (subprocess->flags & G_SUBPROCESS_FLAGS_STDIN_PIPE), FALSE);
+ g_return_val_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable), FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ g_subprocess_sync_setup ();
+ g_subprocess_communicate_internal (subprocess, stdin_bytes, NULL, 0, cancellable, g_subprocess_sync_done, &result);
+ g_subprocess_sync_complete (&result);
+ success = g_subprocess_communicate_bytes_finish (subprocess, result, stdout_bytes, stderr_bytes, error);
+ g_object_unref (result);
+
+ return success;
+}
+
+void
+g_subprocess_communicate_bytes_async (GSubprocess *subprocess,
+ GBytes *stdin_bytes,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_return_if_fail (G_IS_SUBPROCESS (subprocess));
+ g_return_if_fail (stdin_bytes == NULL || (subprocess->flags & G_SUBPROCESS_FLAGS_STDIN_PIPE));
+ g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
+
+ g_subprocess_communicate_internal (subprocess, stdin_bytes, NULL, 0, cancellable, callback, user_data);
+}
+
+gboolean
+g_subprocess_communicate_bytes_finish (GSubprocess *subprocess,
+ GAsyncResult *result,
+ GBytes **stdout_bytes,
+ GBytes **stderr_bytes,
+ GError **error)
+{
+ gboolean success;
+ gchar *stdout_data;
+ gsize stdout_length;
+ gchar *stderr_data;
+ gsize stderr_length;
+
+ g_return_val_if_fail (G_IS_SUBPROCESS (subprocess), FALSE);
+ g_return_val_if_fail (g_task_is_valid (result, subprocess), FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ success = g_subprocess_communicate_finish (subprocess, result,
+ stdout_bytes ? &stdout_data : NULL,
+ stdout_bytes ? &stdout_length : NULL,
+ stderr_bytes ? &stderr_data : NULL,
+ stderr_bytes ? &stderr_length : NULL,
+ error);
+
+ if (success)
+ {
+ if (stdout_bytes)
+ *stdout_bytes = g_bytes_new_take (stdout_data, stdout_length);
+
+ if (stderr_bytes)
+ *stderr_bytes = g_bytes_new_take (stderr_data, stderr_length);
+ }
+
+ return success;
+}
diff --git a/gio/gsubprocess.h b/gio/gsubprocess.h
new file mode 100644
index 0000000..8ae002b
--- /dev/null
+++ b/gio/gsubprocess.h
@@ -0,0 +1,174 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2012 Colin Walters <walters verbum org>
+ *
+ * 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 of the License, or (at your option) any later version.
+ *
+ * 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 this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Colin Walters <walters verbum org>
+ */
+
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
+#ifndef __G_SUBPROCESS_H__
+#define __G_SUBPROCESS_H__
+
+#include <gio/giotypes.h>
+
+G_BEGIN_DECLS
+
+#define G_TYPE_SUBPROCESS (g_subprocess_get_type ())
+#define G_SUBPROCESS(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_SUBPROCESS, GSubprocess))
+#define G_IS_SUBPROCESS(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_SUBPROCESS))
+
+GLIB_AVAILABLE_IN_2_36
+GType g_subprocess_get_type (void) G_GNUC_CONST;
+
+/**** Core API ****/
+
+GLIB_AVAILABLE_IN_2_36
+GSubprocess * g_subprocess_new (GSubprocessFlags flags,
+ GError **error,
+ const gchar *argv0,
+ ...) G_GNUC_NULL_TERMINATED;
+GLIB_AVAILABLE_IN_2_36
+GSubprocess * g_subprocess_newv (const gchar * const *argv,
+ GSubprocessFlags flags,
+ GError **error);
+
+GLIB_AVAILABLE_IN_2_36
+GOutputStream * g_subprocess_get_stdin_pipe (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+GInputStream * g_subprocess_get_stdout_pipe (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+GInputStream * g_subprocess_get_stderr_pipe (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+const gchar * g_subprocess_get_identifier (GSubprocess *self);
+
+#ifdef G_OS_UNIX
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_send_signal (GSubprocess *self,
+ gint signal_num);
+#endif
+
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_force_exit (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_wait (GSubprocess *self,
+ GCancellable *cancellable,
+ GError **error);
+
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_wait_async (GSubprocess *self,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_wait_finish (GSubprocess *self,
+ GAsyncResult *result,
+ GError **error);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_wait_check (GSubprocess *self,
+ GCancellable *cancellable,
+ GError **error);
+
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_wait_check_async (GSubprocess *self,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_wait_check_finish (GSubprocess *self,
+ GAsyncResult *result,
+ GError **error);
+
+
+GLIB_AVAILABLE_IN_2_36
+gint g_subprocess_get_status (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_get_successful (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_get_if_exited (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+gint g_subprocess_get_exit_status (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_get_if_signaled (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+gint g_subprocess_get_term_sig (GSubprocess *self);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_communicate (GSubprocess *subprocess,
+ const gchar *stdin_data,
+ gssize stdin_length,
+ GCancellable *cancellable,
+ gchar **stdout_data,
+ gsize *stdout_length,
+ gchar **stderr_data,
+ gsize *stderr_length,
+ GError **error);
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_communicate_async (GSubprocess *subprocess,
+ const gchar *stdin_data,
+ gssize stdin_length,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_communicate_finish (GSubprocess *subprocess,
+ GAsyncResult *result,
+ gchar **stdout_data,
+ gsize *stdout_length,
+ gchar **stderr_data,
+ gsize *stderr_length,
+ GError **error);
+
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_communicate_bytes (GSubprocess *subprocess,
+ GBytes *stdin_bytes,
+ GCancellable *cancellable,
+ GBytes **stdout_bytes,
+ GBytes **stderr_bytes,
+ GError **error);
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_communicate_bytes_async (GSubprocess *subprocess,
+ GBytes *stdin_bytes,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+GLIB_AVAILABLE_IN_2_36
+gboolean g_subprocess_communicate_bytes_finish (GSubprocess *subprocess,
+ GAsyncResult *result,
+ GBytes **stdout_bytes,
+ GBytes **stderr_bytes,
+ GError **error);
+
+G_END_DECLS
+
+#endif /* __G_SUBPROCESS_H__ */
diff --git a/gio/gsubprocesslauncher-private.h b/gio/gsubprocesslauncher-private.h
new file mode 100644
index 0000000..55c608e
--- /dev/null
+++ b/gio/gsubprocesslauncher-private.h
@@ -0,0 +1,58 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2012 Colin Walters <walters verbum org>
+ *
+ * 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 of the License, or (at your option) any later version.
+ *
+ * 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 this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __G_SUBPROCESS_CONTEXT_PRIVATE_H__
+#define __G_SUBPROCESS_CONTEXT_PRIVATE_H__
+
+#include "gsubprocesslauncher.h"
+
+G_BEGIN_DECLS
+
+struct _GSubprocessLauncher
+{
+ GObject parent;
+
+ GSubprocessFlags flags;
+ gboolean path_from_envp;
+ char **envp;
+ char *cwd;
+
+#ifdef G_OS_UNIX
+ gint stdin_fd;
+ gchar *stdin_path;
+
+ gint stdout_fd;
+ gchar *stdout_path;
+
+ gint stderr_fd;
+ gchar *stderr_path;
+
+ GSpawnChildSetupFunc child_setup_func;
+ gpointer child_setup_user_data;
+ GDestroyNotify child_setup_destroy_notify;
+#endif
+};
+
+void g_subprocess_set_launcher (GSubprocess *subprocess,
+ GSubprocessLauncher *launcher);
+
+G_END_DECLS
+
+#endif
diff --git a/gio/gsubprocesslauncher.c b/gio/gsubprocesslauncher.c
new file mode 100644
index 0000000..d0ecd93
--- /dev/null
+++ b/gio/gsubprocesslauncher.c
@@ -0,0 +1,654 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright  2012 Red Hat, Inc.
+ * Copyright  2012-2013 Canonical Limited
+ *
+ * This program 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 licence or (at
+ * your option) any later version.
+ *
+ * See the included COPYING file for more information.
+ *
+ * Authors: Colin Walters <walters verbum org>
+ * Ryan Lortie <desrt desrt ca>
+ */
+
+/**
+ * SECTION:gsubprocess
+ * @title: GSubprocess Launcher
+ * @short_description: Environment options for launching a child process
+ *
+ * This class contains a set of options for launching child processes,
+ * such as where its standard input and output will be directed, the
+ * argument list, the environment, and more.
+ *
+ * While the #GSubprocess class has high level functions covering
+ * popular cases, use of this class allows access to more advanced
+ * options. It can also be used to launch multiple subprocesses with
+ * a similar configuration.
+ *
+ * Since: 2.36
+ */
+
+#define ALL_STDIN_FLAGS (G_SUBPROCESS_FLAGS_STDIN_PIPE | \
+ G_SUBPROCESS_FLAGS_STDIN_INHERIT)
+#define ALL_STDOUT_FLAGS (G_SUBPROCESS_FLAGS_STDOUT_PIPE | \
+ G_SUBPROCESS_FLAGS_STDOUT_SILENCE)
+#define ALL_STDERR_FLAGS (G_SUBPROCESS_FLAGS_STDERR_PIPE | \
+ G_SUBPROCESS_FLAGS_STDERR_SILENCE | \
+ G_SUBPROCESS_FLAGS_STDERR_MERGE)
+
+#include "config.h"
+
+#include "gsubprocesslauncher-private.h"
+#include "gioenumtypes.h"
+#include "gsubprocess.h"
+#include "ginitable.h"
+
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#include <fcntl.h>
+#endif
+
+typedef GObjectClass GSubprocessLauncherClass;
+
+G_DEFINE_TYPE (GSubprocessLauncher, g_subprocess_launcher, G_TYPE_OBJECT);
+
+static gboolean
+verify_disposition (const gchar *stream_name,
+ GSubprocessFlags filtered_flags,
+ gint fd,
+ const gchar *filename)
+{
+ guint n_bits;
+
+ if (!filtered_flags)
+ n_bits = 0;
+ else if (((filtered_flags - 1) & filtered_flags) == 0)
+ n_bits = 1;
+ else
+ n_bits = 2; /* ...or more */
+
+ if (n_bits + (fd >= 0) + (filename != NULL) > 1)
+ {
+ GString *err;
+
+ err = g_string_new (NULL);
+ if (n_bits)
+ {
+ GFlagsClass *class;
+ GFlagsValue *value;
+
+ class = g_type_class_peek (G_TYPE_SUBPROCESS_FLAGS);
+ while ((value = g_flags_get_first_value (class, filtered_flags)))
+ {
+ g_string_append_printf (err, " %s", value->value_name);
+ filtered_flags &= value->value;
+ }
+
+ g_type_class_unref (class);
+ }
+
+ if (fd >= 0)
+ g_string_append_printf (err, " g_subprocess_launcher_take_%s_fd()", stream_name);
+
+ if (filename)
+ g_string_append_printf (err, " g_subprocess_launcher_set_%s_file_path()", stream_name);
+
+ g_critical ("You may specify at most one disposition for the %s stream, but you specified:%s.",
+ stream_name, err->str);
+ g_string_free (err, TRUE);
+
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+verify_flags (GSubprocessFlags flags)
+{
+ return verify_disposition ("stdin", flags & ALL_STDIN_FLAGS, -1, NULL) &&
+ verify_disposition ("stdout", flags & ALL_STDOUT_FLAGS, -1, NULL) &&
+ verify_disposition ("stderr", flags & ALL_STDERR_FLAGS, -1, NULL);
+}
+
+static void
+g_subprocess_launcher_set_property (GObject *object, guint prop_id,
+ const GValue *value, GParamSpec *pspec)
+{
+ GSubprocessLauncher *launcher = G_SUBPROCESS_LAUNCHER (object);
+
+ g_assert (prop_id == 1);
+
+ if (verify_flags (g_value_get_flags (value)))
+ launcher->flags = g_value_get_flags (value);
+}
+
+static void
+g_subprocess_launcher_finalize (GObject *object)
+{
+ GSubprocessLauncher *self = G_SUBPROCESS_LAUNCHER (object);
+
+ g_strfreev (self->envp);
+ g_free (self->cwd);
+
+#ifdef G_OS_UNIX
+ g_free (self->stdin_path);
+ g_free (self->stdout_path);
+ g_free (self->stderr_path);
+
+ if (self->stdin_fd != -1)
+ close (self->stdin_fd);
+
+ if (self->stdout_fd != -1)
+ close (self->stdout_fd);
+
+ if (self->stderr_fd != -1)
+ close (self->stderr_fd);
+#endif
+
+ if (self->child_setup_destroy_notify)
+ (* self->child_setup_destroy_notify) (self->child_setup_user_data);
+
+ G_OBJECT_CLASS (g_subprocess_launcher_parent_class)->finalize (object);
+}
+
+static void
+g_subprocess_launcher_init (GSubprocessLauncher *self)
+{
+ self->envp = g_listenv ();
+
+ self->stdin_fd = -1;
+ self->stdout_fd = -1;
+ self->stderr_fd = -1;
+}
+
+static void
+g_subprocess_launcher_class_init (GSubprocessLauncherClass *class)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (class);
+
+ gobject_class->set_property = g_subprocess_launcher_set_property;
+ gobject_class->finalize = g_subprocess_launcher_finalize;
+
+ g_object_class_install_property (gobject_class, 1,
+ g_param_spec_flags ("flags", "Flags", "GSubprocessFlags for launched processes",
+ G_TYPE_SUBPROCESS_FLAGS, 0, G_PARAM_WRITABLE |
+ G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY));
+}
+
+/**
+ * g_subprocess_launcher_new:
+ *
+ * Creates a new #GSubprocessLauncher.
+ *
+ * The launcher is created with the default options. A copy of the
+ * environment of the calling process is made at the time of this call
+ * and will be used as the environment that the process is launched in.
+ *
+ * Since: 2.36
+ **/
+GSubprocessLauncher *
+g_subprocess_launcher_new (GSubprocessFlags flags)
+{
+ if (!verify_flags (flags))
+ return NULL;
+
+ return g_object_new (G_TYPE_SUBPROCESS_LAUNCHER,
+ "flags", flags,
+ NULL);
+}
+
+/**
+ * g_subprocess_launcher_set_environ:
+ * @self: a #GSubprocess
+ * @environ: the replacement environment
+ *
+ * Replace the entire environment of processes launched from this
+ * launcher with the given 'environ' variable.
+ *
+ * Typically you will build this variable by using g_listenv() to copy
+ * the process 'environ' and using the functions g_environ_setenv(),
+ * g_environ_unsetenv(), etc.
+ *
+ * As an alternative, you can use g_subprocess_launcher_setenv(),
+ * g_subprocess_launcher_unsetenv(), etc.
+ *
+ * All strings in this array are expected to be in the GLib file name
+ * encoding. On UNIX, this means that they can be arbitrary byte
+ * strings. On Windows, they should be in UTF-8.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_set_environ (GSubprocessLauncher *self,
+ gchar **environ)
+{
+ g_strfreev (self->envp);
+ self->envp = g_strdupv (environ);
+}
+
+/**
+ * g_subprocess_launcher_setenv:
+ * @self: a #GSubprocess
+ * @variable: the environment variable to set, must not contain '='
+ * @value: the new value for the variable
+ * @overwrite: whether to change the variable if it already exists
+ *
+ * Sets the environment variable @variable in the environment of
+ * processes launched from this launcher.
+ *
+ * Both the variable's name and value should be in the GLib file name
+ * encoding. On UNIX, this means that they can be arbitrary byte
+ * strings. On Windows, they should be in UTF-8.
+ *
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_setenv (GSubprocessLauncher *self,
+ const gchar *variable,
+ const gchar *value,
+ gboolean overwrite)
+{
+ self->envp = g_environ_setenv (self->envp, variable, value, overwrite);
+}
+
+/**
+ * g_subprocess_launcher_unsetsenv:
+ * @self: a #GSubprocess
+ * @variable: the environment variable to unset, must not contain '='
+ *
+ * Removes the environment variable @variable from the environment of
+ * processes launched from this launcher.
+ *
+ * The variable name should be in the GLib file name encoding. On UNIX,
+ * this means that they can be arbitrary byte strings. On Windows, they
+ * should be in UTF-8.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_unsetenv (GSubprocessLauncher *self,
+ const gchar *variable)
+{
+ self->envp = g_environ_unsetenv (self->envp, variable);
+}
+
+/**
+ * g_subprocess_launcher_getenv:
+ * @self: a #GSubprocess
+ * @variable: the environment variable to get
+ *
+ * Returns the value of the environment variable @variable in the
+ * environment of processes launched from this launcher.
+ *
+ * The returned string is in the GLib file name encoding. On UNIX, this
+ * means that it can be an arbitrary byte string. On Windows, it will
+ * be UTF-8.
+ *
+ * Returns: the value of the environment variable, %NULL if unset
+ *
+ * Since: 2.36
+ **/
+const gchar *
+g_subprocess_launcher_getenv (GSubprocessLauncher *self,
+ const gchar *variable)
+{
+ return g_environ_getenv (self->envp, variable);
+}
+
+/**
+ * g_subprocess_launcher_set_cwd:
+ * @self: a #GSubprocess
+ * @cwd: the cwd for launched processes
+ *
+ * Sets the current working directory that processes will be launched
+ * with.
+ *
+ * By default processes are launched with the current working directory
+ * of the launching process at the time of launch.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_set_cwd (GSubprocessLauncher *self,
+ const gchar *cwd)
+{
+ g_free (self->cwd);
+ self->cwd = g_strdup (cwd);
+}
+
+/**
+ * g_subprocess_launcher_set_flags:
+ * @self: a #GSubprocessLauncher
+ * @flags: #GSubprocessFlags
+ *
+ * Sets the flags on the launcher.
+ *
+ * The default flags are %G_SUBPROCESS_FLAGS_NONE.
+ *
+ * You may not set flags that specify conflicting options for how to
+ * handle a particular stdio stream (eg: specifying both
+ * %G_SUBPROCESS_FLAGS_STDIN_PIPE and
+ * %G_SUBPROCESS_FLAGS_STDIN_INHERIT).
+ *
+ * You may also not set a flag that conflicts with a previous call to a
+ * function like g_subprocess_launcher_set_stdin_file_path() or
+ * g_subprocess_launcher_take_stdout_fd().
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_set_flags (GSubprocessLauncher *self,
+ GSubprocessFlags flags)
+{
+ if (verify_disposition ("stdin", flags & ALL_STDIN_FLAGS, self->stdin_fd, self->stdin_path) &&
+ verify_disposition ("stdout", flags & ALL_STDOUT_FLAGS, self->stdout_fd, self->stdout_path) &&
+ verify_disposition ("stderr", flags & ALL_STDERR_FLAGS, self->stderr_fd, self->stderr_path))
+ self->flags = flags;
+}
+
+#ifdef G_OS_UNIX
+static void
+assign_fd (gint *fd_ptr, gint fd)
+{
+ gint flags;
+
+ if (*fd_ptr != -1)
+ close (*fd_ptr);
+
+ *fd_ptr = fd;
+
+ if (fd != -1)
+ {
+ /* best effort */
+ flags = fcntl (fd, F_GETFD);
+ if (~flags & FD_CLOEXEC)
+ fcntl (fd, F_SETFD, flags | FD_CLOEXEC);
+ }
+}
+
+/**
+ * g_subprocess_launcher_set_stdin_file_path:
+ * @self: a #GSubprocessLauncher
+ * @path: a filename or %NULL
+ *
+ * Sets the file path to use as the stdin for spawned processes.
+ *
+ * If @path is %NULL then any previously given path is unset.
+ *
+ * The file must exist or spawning the process will fail.
+ *
+ * You may not set a stdin file path if a stdin fd is already set or if
+ * the launcher flags contain any flags directing stdin elsewhere.
+ *
+ * This feature is only available on UNIX.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_set_stdin_file_path (GSubprocessLauncher *self,
+ const gchar *path)
+{
+ if (verify_disposition ("stdin", self->flags & ALL_STDIN_FLAGS, self->stdin_fd, path))
+ {
+ g_free (self->stdin_path);
+ self->stdin_path = g_strdup (path);
+ }
+}
+
+/**
+ * g_subprocess_launcher_take_stdin_fd:
+ * @self: a #GSubprocessLauncher
+ * @fd: a file descriptor, or -1
+ *
+ * Sets the file descriptor to use as the stdin for spawned processes.
+ *
+ * If @fd is -1 then any previously given fd is unset.
+ *
+ * Note that if your intention is to have the stdin of the calling
+ * process inherited by the child then %G_SUBPROCESS_FLAGS_STDIN_INHERIT
+ * is a better way to go about doing that.
+ *
+ * The passed @fd is noted but will not be touched in the current
+ * process. It is therefore necessary that it be kept open by the
+ * caller until the subprocess is spawned. The file descriptor will
+ * also not be explicitly closed on the child side, so it must be marked
+ * O_CLOEXEC if that's what you want.
+ *
+ * You may not set a stdin fd if a stdin file path is already set or if
+ * the launcher flags contain any flags directing stdin elsewhere.
+ *
+ * This feature is only available on UNIX.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_take_stdin_fd (GSubprocessLauncher *self,
+ gint fd)
+{
+ if (verify_disposition ("stdin", self->flags & ALL_STDIN_FLAGS, fd, self->stdin_path))
+ assign_fd (&self->stdin_fd, fd);
+}
+
+/**
+ * g_subprocess_launcher_set_stdout_file_path:
+ * @self: a #GSubprocessLauncher
+ * @path: a filename or %NULL
+ *
+ * Sets the file path to use as the stdout for spawned processes.
+ *
+ * If @path is %NULL then any previously given path is unset.
+ *
+ * The file will be created or truncated when the process is spawned, as
+ * would be the case if using '>' at the shell.
+ *
+ * You may not set a stdout file path if a stdout fd is already set or
+ * if the launcher flags contain any flags directing stdout elsewhere.
+ *
+ * This feature is only available on UNIX.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_set_stdout_file_path (GSubprocessLauncher *self,
+ const gchar *path)
+{
+ if (verify_disposition ("stdout", self->flags & ALL_STDOUT_FLAGS, self->stdout_fd, path))
+ {
+ g_free (self->stdout_path);
+ self->stdout_path = g_strdup (path);
+ }
+}
+
+/**
+ * g_subprocess_launcher_take_stdout_fd:
+ * @self: a #GSubprocessLauncher
+ * @fd: a file descriptor, or -1
+ *
+ * Sets the file descriptor to use as the stdout for spawned processes.
+ *
+ * If @fd is -1 then any previously given fd is unset.
+ *
+ * Note that the default behaviour is to pass stdout through to the
+ * stdout of the parent process.
+ *
+ * The passed @fd is noted but will not be touched in the current
+ * process. It is therefore necessary that it be kept open by the
+ * caller until the subprocess is spawned. The file descriptor will
+ * also not be explicitly closed on the child side, so it must be marked
+ * O_CLOEXEC if that's what you want.
+ *
+ * You may not set a stdout fd if a stdout file path is already set or
+ * if the launcher flags contain any flags directing stdout elsewhere.
+ *
+ * This feature is only available on UNIX.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_take_stdout_fd (GSubprocessLauncher *self,
+ gint fd)
+{
+ if (verify_disposition ("stdout", self->flags & ALL_STDOUT_FLAGS, fd, self->stdout_path))
+ assign_fd (&self->stdout_fd, fd);
+}
+
+/**
+ * g_subprocess_launcher_set_stderr_file_path:
+ * @self: a #GSubprocessLauncher
+ * @path: a filename or %NULL
+ *
+ * Sets the file path to use as the stderr for spawned processes.
+ *
+ * If @path is %NULL then any previously given path is unset.
+ *
+ * The file will be created or truncated when the process is spawned, as
+ * would be the case if using '2>' at the shell.
+ *
+ * If you want to send both stdout and stderr to the same file then use
+ * %G_SUBPROCESS_FLAGS_STDERR_MERGE.
+ *
+ * You may not set a stderr file path if a stderr fd is already set or
+ * if the launcher flags contain any flags directing stderr elsewhere.
+ *
+ * This feature is only available on UNIX.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_set_stderr_file_path (GSubprocessLauncher *self,
+ const gchar *path)
+{
+ if (verify_disposition ("stderr", self->flags & ALL_STDERR_FLAGS, self->stderr_fd, path))
+ {
+ g_free (self->stderr_path);
+ self->stderr_path = g_strdup (path);
+ }
+}
+
+/**
+ * g_subprocess_launcher_take_stderr_fd:
+ * @self: a #GSubprocessLauncher
+ * @fd: a file descriptor, or -1
+ *
+ * Sets the file descriptor to use as the stderr for spawned processes.
+ *
+ * If @fd is -1 then any previously given fd is unset.
+ *
+ * Note that the default behaviour is to pass stderr through to the
+ * stderr of the parent process.
+ *
+ * The passed @fd belongs to the #GSubprocessLauncher. It will be
+ * automatically closed when the launcher is finalized. The file
+ * descriptor will also be closed on the child side when executing the
+ * spawned process.
+ *
+ * You may not set a stderr fd if a stderr file path is already set or
+ * if the launcher flags contain any flags directing stderr elsewhere.
+ *
+ * This feature is only available on UNIX.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_take_stderr_fd (GSubprocessLauncher *self,
+ gint fd)
+{
+ if (verify_disposition ("stderr", self->flags & ALL_STDERR_FLAGS, fd, self->stderr_path))
+ assign_fd (&self->stderr_fd, fd);
+}
+
+/**
+ * g_subprocess_launcher_set_child_setup:
+ * @self: a #GSubprocessLauncher
+ * @child_setup: a #GSpawnChildSetupFunc to use as the child setup function
+ * @user_data: user data for @child_setup
+ * @destroy_notify: a #GDestroyNotify for @user_data
+ *
+ * Sets up a child setup function.
+ *
+ * The child setup function will be called after fork() but before
+ * exec() on the child's side.
+ *
+ * @destroy_notify will not be automatically called on the child's side
+ * of the fork(). It will only be called when the last reference on the
+ * #GSubprocessLauncher is dropped or when a new child setup function is
+ * given.
+ *
+ * %NULL can be given as @child_setup to disable the functionality.
+ *
+ * Child setup functions are only available on UNIX.
+ *
+ * Since: 2.36
+ **/
+void
+g_subprocess_launcher_set_child_setup (GSubprocessLauncher *self,
+ GSpawnChildSetupFunc child_setup,
+ gpointer user_data,
+ GDestroyNotify destroy_notify)
+{
+ if (self->child_setup_destroy_notify)
+ (* self->child_setup_destroy_notify) (self->child_setup_user_data);
+
+ self->child_setup_func = child_setup;
+ self->child_setup_user_data = user_data;
+ self->child_setup_destroy_notify = destroy_notify;
+}
+#endif
+
+GSubprocess *
+g_subprocess_launcher_spawn (GSubprocessLauncher *launcher,
+ GError **error,
+ const gchar *argv0,
+ ...)
+{
+ GSubprocess *result;
+ GPtrArray *args;
+ const gchar *arg;
+ va_list ap;
+
+ g_return_val_if_fail (argv0 != NULL && argv0[0] != '\0', NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ args = g_ptr_array_new ();
+
+ va_start (ap, argv0);
+ g_ptr_array_add (args, (gchar *) argv0);
+ while ((arg = va_arg (ap, const gchar *)))
+ g_ptr_array_add (args, (gchar *) arg);
+
+ result = g_subprocess_launcher_spawnv (launcher, (const gchar * const *) args->pdata, error);
+
+ g_ptr_array_free (args, TRUE);
+
+ return result;
+
+}
+
+GSubprocess *
+g_subprocess_launcher_spawnv (GSubprocessLauncher *launcher,
+ const gchar * const *argv,
+ GError **error)
+{
+ GSubprocess *subprocess;
+
+ g_return_val_if_fail (argv != NULL && argv[0] != NULL && argv[0][0] != '\0', NULL);
+
+ subprocess = g_object_new (G_TYPE_SUBPROCESS,
+ "argv", argv,
+ "flags", launcher->flags,
+ NULL);
+ g_subprocess_set_launcher (subprocess, launcher);
+
+ if (!g_initable_init (G_INITABLE (subprocess), NULL, error))
+ {
+ g_object_unref (subprocess);
+ return NULL;
+ }
+
+ return subprocess;
+}
diff --git a/gio/gsubprocesslauncher.h b/gio/gsubprocesslauncher.h
new file mode 100644
index 0000000..41b0652
--- /dev/null
+++ b/gio/gsubprocesslauncher.h
@@ -0,0 +1,113 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright  2012 Colin Walters <walters verbum org>
+ * Copyright  2012 Canonical Limited
+ *
+ * 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 of the License, or (at your option) any later version.
+ *
+ * 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 this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ryan Lortie <desrt desrt ca>
+ * Author: Colin Walters <walters verbum org>
+ */
+
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
+#ifndef __G_SUBPROCESS_LAUNCHER_H__
+#define __G_SUBPROCESS_LAUNCHER_H__
+
+#include <gio/giotypes.h>
+
+G_BEGIN_DECLS
+
+#define G_TYPE_SUBPROCESS_LAUNCHER (g_subprocess_launcher_get_type ())
+#define G_SUBPROCESS_LAUNCHER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_SUBPROCESS_LAUNCHER, GSubprocessLauncher))
+#define G_IS_SUBPROCESS_LAUNCHER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_SUBPROCESS_LAUNCHER))
+
+GLIB_AVAILABLE_IN_2_36
+GType g_subprocess_launcher_get_type (void) G_GNUC_CONST;
+
+GLIB_AVAILABLE_IN_2_36
+GSubprocessLauncher * g_subprocess_launcher_new (GSubprocessFlags flags);
+
+GLIB_AVAILABLE_IN_2_36
+GSubprocess * g_subprocess_launcher_spawn (GSubprocessLauncher *self,
+ GError **error,
+ const gchar *argv0,
+ ...);
+
+GLIB_AVAILABLE_IN_2_36
+GSubprocess * g_subprocess_launcher_spawnv (GSubprocessLauncher *self,
+ const gchar * const *argv,
+ GError **error);
+
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_set_environ (GSubprocessLauncher *self,
+ gchar **environ);
+
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_setenv (GSubprocessLauncher *self,
+ const gchar *variable,
+ const gchar *value,
+ gboolean overwrite);
+
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_unsetenv (GSubprocessLauncher *self,
+ const gchar *variable);
+
+GLIB_AVAILABLE_IN_2_36
+const gchar * g_subprocess_launcher_getenv (GSubprocessLauncher *self,
+ const gchar *variable);
+
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_set_cwd (GSubprocessLauncher *self,
+ const gchar *cwd);
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_set_flags (GSubprocessLauncher *self,
+ GSubprocessFlags flags);
+
+/* Extended I/O control, only available on UNIX */
+#ifdef G_OS_UNIX
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_set_stdin_file_path (GSubprocessLauncher *self,
+ const gchar *path);
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_take_stdin_fd (GSubprocessLauncher *self,
+ gint fd);
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_set_stdout_file_path (GSubprocessLauncher *self,
+ const gchar *path);
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_take_stdout_fd (GSubprocessLauncher *self,
+ gint fd);
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_set_stderr_file_path (GSubprocessLauncher *self,
+ const gchar *path);
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_take_stderr_fd (GSubprocessLauncher *self,
+ gint fd);
+
+/* Child setup, only available on UNIX */
+GLIB_AVAILABLE_IN_2_36
+void g_subprocess_launcher_set_child_setup (GSubprocessLauncher *self,
+ GSpawnChildSetupFunc child_setup,
+ gpointer user_data,
+ GDestroyNotify destroy_notify);
+#endif
+
+G_END_DECLS
+
+#endif /* __G_SUBPROCESS_H__ */
diff --git a/gio/tests/.gitignore b/gio/tests/.gitignore
index ca0cb93..f2ffc02 100644
--- a/gio/tests/.gitignore
+++ b/gio/tests/.gitignore
@@ -67,6 +67,8 @@ gdbus-test-codegen-generated*
gdbus-test-fixture
gdbus-testserver
gdbus-threading
+gsubprocess
+gsubprocess-testprog
g-file
g-file-info
g-icon
diff --git a/gio/tests/Makefile.am b/gio/tests/Makefile.am
index db73a65..346c86e 100644
--- a/gio/tests/Makefile.am
+++ b/gio/tests/Makefile.am
@@ -47,6 +47,7 @@ TEST_PROGS += \
srvtarget \
contexts \
gsettings \
+ gsubprocess \
gschema-compile \
async-close-output-stream \
gdbus-addresses \
@@ -186,6 +187,8 @@ send_data_LDADD = $(LDADD) \
contexts_LDADD = $(LDADD) \
$(top_builddir)/gthread/libgthread-2.0.la
+noinst_PROGRAMS += gsubprocess-testprog
+
gdbus_daemon_SOURCES = gdbus-daemon.c $(top_srcdir)/gio/gdbusdaemon.c $(top_builddir)/gio/gdbus-daemon-generated.c
gdbus_testserver_SOURCES = gdbus-testserver.c
diff --git a/gio/tests/gsubprocess-testprog.c b/gio/tests/gsubprocess-testprog.c
new file mode 100644
index 0000000..3d8e5cc
--- /dev/null
+++ b/gio/tests/gsubprocess-testprog.c
@@ -0,0 +1,172 @@
+#include <gio/gio.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#ifdef G_OS_UNIX
+#include <gio/gunixinputstream.h>
+#include <gio/gunixoutputstream.h>
+#endif
+
+static GOptionEntry options[] = {
+ {NULL}
+};
+
+static void
+write_all (int fd,
+ const guint8* buf,
+ gsize len)
+{
+ while (len > 0)
+ {
+ ssize_t bytes_written = write (fd, buf, len);
+ if (bytes_written < 0)
+ g_error ("Failed to write to fd %d: %s",
+ fd, strerror (errno));
+ buf += bytes_written;
+ len -= bytes_written;
+ }
+}
+
+static int
+echo_mode (int argc,
+ char **argv)
+{
+ int i;
+
+ for (i = 2; i < argc; i++)
+ {
+ write_all (1, (guint8*)argv[i], strlen (argv[i]));
+ write_all (1, (guint8*)"\n", 1);
+ }
+
+ return 0;
+}
+
+static int
+echo_stdout_and_stderr_mode (int argc,
+ char **argv)
+{
+ int i;
+
+ for (i = 2; i < argc; i++)
+ {
+ write_all (1, (guint8*)argv[i], strlen (argv[i]));
+ write_all (1, (guint8*)"\n", 1);
+ write_all (2, (guint8*)argv[i], strlen (argv[i]));
+ write_all (2, (guint8*)"\n", 1);
+ }
+
+ return 0;
+}
+
+static int
+cat_mode (int argc,
+ char **argv)
+{
+ GIOChannel *chan_stdin;
+ GIOChannel *chan_stdout;
+ GIOStatus status;
+ char buf[1024];
+ gsize bytes_read, bytes_written;
+ GError *local_error = NULL;
+ GError **error = &local_error;
+
+ chan_stdin = g_io_channel_unix_new (0);
+ g_io_channel_set_encoding (chan_stdin, NULL, error);
+ g_assert_no_error (local_error);
+ chan_stdout = g_io_channel_unix_new (1);
+ g_io_channel_set_encoding (chan_stdout, NULL, error);
+ g_assert_no_error (local_error);
+
+ while (TRUE)
+ {
+ do
+ status = g_io_channel_read_chars (chan_stdin, buf, sizeof (buf),
+ &bytes_read, error);
+ while (status == G_IO_STATUS_AGAIN);
+
+ if (status == G_IO_STATUS_EOF || status == G_IO_STATUS_ERROR)
+ break;
+
+ do
+ status = g_io_channel_write_chars (chan_stdout, buf, bytes_read,
+ &bytes_written, error);
+ while (status == G_IO_STATUS_AGAIN);
+
+ if (status == G_IO_STATUS_EOF || status == G_IO_STATUS_ERROR)
+ break;
+ }
+
+ g_io_channel_unref (chan_stdin);
+ g_io_channel_unref (chan_stdout);
+
+ if (local_error)
+ {
+ g_printerr ("I/O error: %s\n", local_error->message);
+ g_clear_error (&local_error);
+ return 1;
+ }
+ return 0;
+}
+
+static gint
+sleep_forever_mode (int argc,
+ char **argv)
+{
+ GMainLoop *loop;
+
+ loop = g_main_loop_new (NULL, TRUE);
+ g_main_loop_run (loop);
+
+ return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+ GOptionContext *context;
+ GError *error = NULL;
+ const char *mode;
+
+ context = g_option_context_new ("MODE - Test GSubprocess stuff");
+ g_option_context_add_main_entries (context, options, NULL);
+ if (!g_option_context_parse (context, &argc, &argv, &error))
+ {
+ g_printerr ("%s: %s\n", argv[0], error->message);
+ return 1;
+ }
+
+ if (argc < 2)
+ {
+ g_printerr ("MODE argument required\n");
+ return 1;
+ }
+
+ mode = argv[1];
+ if (strcmp (mode, "noop") == 0)
+ return 0;
+ else if (strcmp (mode, "exit1") == 0)
+ return 1;
+ else if (strcmp (mode, "assert-argv0") == 0)
+ {
+ if (strcmp (argv[0], "moocow") == 0)
+ return 0;
+ g_printerr ("argv0=%s != moocow\n", argv[0]);
+ return 1;
+ }
+ else if (strcmp (mode, "echo") == 0)
+ return echo_mode (argc, argv);
+ else if (strcmp (mode, "echo-stdout-and-stderr") == 0)
+ return echo_stdout_and_stderr_mode (argc, argv);
+ else if (strcmp (mode, "cat") == 0)
+ return cat_mode (argc, argv);
+ else if (strcmp (mode, "sleep-forever") == 0)
+ return sleep_forever_mode (argc, argv);
+ else
+ {
+ g_printerr ("Unknown MODE %s\n", argv[1]);
+ return 1;
+ }
+
+ return TRUE;
+}
diff --git a/gio/tests/gsubprocess.c b/gio/tests/gsubprocess.c
new file mode 100644
index 0000000..b881fcc
--- /dev/null
+++ b/gio/tests/gsubprocess.c
@@ -0,0 +1,791 @@
+#include <gio/gio.h>
+#include <string.h>
+
+#ifdef G_OS_UNIX
+#include <sys/wait.h>
+#include <gio/gfiledescriptorbased.h>
+#endif
+
+static GPtrArray *
+get_test_subprocess_args (const char *mode,
+ ...) G_GNUC_NULL_TERMINATED;
+
+static GPtrArray *
+get_test_subprocess_args (const char *mode,
+ ...)
+{
+ GPtrArray *ret;
+ char *cwd;
+ char *cwd_path;
+ const char *binname;
+ va_list args;
+ gpointer arg;
+
+ ret = g_ptr_array_new_with_free_func (g_free);
+
+ cwd = g_get_current_dir ();
+
+#ifdef G_OS_WIN32
+ binname = "gsubprocess-testprog.exe";
+#else
+ binname = "gsubprocess-testprog";
+#endif
+
+ cwd_path = g_build_filename (cwd, binname, NULL);
+ g_free (cwd);
+ g_ptr_array_add (ret, cwd_path);
+ g_ptr_array_add (ret, g_strdup (mode));
+
+ va_start (args, mode);
+ while ((arg = va_arg (args, gpointer)) != NULL)
+ g_ptr_array_add (ret, g_strdup (arg));
+ va_end (args);
+
+ g_ptr_array_add (ret, NULL);
+ return ret;
+}
+
+static void
+test_noop (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GPtrArray *args;
+ GSubprocess *proc;
+
+ args = get_test_subprocess_args ("noop", NULL);
+ proc = g_subprocess_newv ((const gchar * const *) args->pdata, G_SUBPROCESS_FLAGS_NONE, error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ g_subprocess_wait_check (proc, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_object_unref (proc);
+}
+
+static void
+test_noop_all_to_null (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GPtrArray *args;
+ GSubprocess *proc;
+
+ args = get_test_subprocess_args ("noop", NULL);
+ proc = g_subprocess_newv ((const gchar * const *) args->pdata,
+ G_SUBPROCESS_FLAGS_STDOUT_SILENCE | G_SUBPROCESS_FLAGS_STDERR_SILENCE,
+ error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ g_subprocess_wait_check (proc, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_object_unref (proc);
+}
+
+static void
+test_noop_no_wait (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GPtrArray *args;
+ GSubprocess *proc;
+
+ args = get_test_subprocess_args ("noop", NULL);
+ proc = g_subprocess_newv ((const gchar * const *) args->pdata, G_SUBPROCESS_FLAGS_NONE, error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ g_object_unref (proc);
+}
+
+static void
+test_noop_stdin_inherit (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GPtrArray *args;
+ GSubprocess *proc;
+
+ args = get_test_subprocess_args ("noop", NULL);
+ proc = g_subprocess_newv ((const gchar * const *) args->pdata, G_SUBPROCESS_FLAGS_STDIN_INHERIT, error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ g_subprocess_wait_check (proc, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_object_unref (proc);
+}
+
+#ifdef G_OS_UNIX
+static void
+test_search_path (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GSubprocess *proc;
+
+ proc = g_subprocess_new (G_SUBPROCESS_FLAGS_NONE, error, "true", NULL);
+ g_assert_no_error (local_error);
+
+ g_subprocess_wait_check (proc, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_object_unref (proc);
+}
+#endif
+
+static void
+test_exit1 (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GPtrArray *args;
+ GSubprocess *proc;
+
+ args = get_test_subprocess_args ("exit1", NULL);
+ proc = g_subprocess_newv ((const gchar * const *) args->pdata, G_SUBPROCESS_FLAGS_NONE, error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ g_subprocess_wait_check (proc, NULL, error);
+ g_assert_error (local_error, G_SPAWN_EXIT_ERROR, 1);
+ g_clear_error (error);
+
+ g_object_unref (proc);
+}
+
+static gchar *
+splice_to_string (GInputStream *stream,
+ GError **error)
+{
+ GMemoryOutputStream *buffer = NULL;
+ char *ret = NULL;
+
+ buffer = (GMemoryOutputStream*)g_memory_output_stream_new (NULL, 0, g_realloc, g_free);
+ if (g_output_stream_splice ((GOutputStream*)buffer, stream, 0, NULL, error) < 0)
+ goto out;
+
+ if (!g_output_stream_write ((GOutputStream*)buffer, "\0", 1, NULL, error))
+ goto out;
+
+ if (!g_output_stream_close ((GOutputStream*)buffer, NULL, error))
+ goto out;
+
+ ret = g_memory_output_stream_steal_data (buffer);
+ out:
+ g_clear_object (&buffer);
+ return ret;
+}
+
+static void
+test_echo1 (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GSubprocess *proc;
+ GPtrArray *args;
+ GInputStream *stdout;
+ gchar *result;
+
+ args = get_test_subprocess_args ("echo", "hello", "world!", NULL);
+ proc = g_subprocess_newv ((const gchar * const *) args->pdata, G_SUBPROCESS_FLAGS_STDOUT_PIPE, error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ stdout = g_subprocess_get_stdout_pipe (proc);
+
+ result = splice_to_string (stdout, error);
+ g_assert_no_error (local_error);
+
+ g_assert_cmpstr (result, ==, "hello\nworld!\n");
+
+ g_free (result);
+ g_object_unref (proc);
+}
+
+#ifdef G_OS_UNIX
+static void
+test_echo_merged (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GSubprocess *proc;
+ GPtrArray *args;
+ GInputStream *stdout;
+ gchar *result;
+
+ args = get_test_subprocess_args ("echo-stdout-and-stderr", "merge", "this", NULL);
+ proc = g_subprocess_newv ((const gchar * const *) args->pdata,
+ G_SUBPROCESS_FLAGS_STDOUT_PIPE | G_SUBPROCESS_FLAGS_STDERR_MERGE,
+ error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ stdout = g_subprocess_get_stdout_pipe (proc);
+ result = splice_to_string (stdout, error);
+ g_assert_no_error (local_error);
+
+ g_assert_cmpstr (result, ==, "merge\nmerge\nthis\nthis\n");
+
+ g_free (result);
+ g_object_unref (proc);
+}
+#endif
+
+typedef struct {
+ guint events_pending;
+ GMainLoop *loop;
+} TestCatData;
+
+static void
+test_cat_on_input_splice_complete (GObject *object,
+ GAsyncResult *result,
+ gpointer user_data)
+{
+ TestCatData *data = user_data;
+ GError *error = NULL;
+
+ (void)g_output_stream_splice_finish ((GOutputStream*)object, result, &error);
+ g_assert_no_error (error);
+
+ data->events_pending--;
+ if (data->events_pending == 0)
+ g_main_loop_quit (data->loop);
+}
+
+static void
+test_cat_utf8 (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GSubprocess *proc;
+ GPtrArray *args;
+ GBytes *input_buf;
+ GBytes *output_buf;
+ GInputStream *input_buf_stream = NULL;
+ GOutputStream *output_buf_stream = NULL;
+ GOutputStream *stdin_stream = NULL;
+ GInputStream *stdout_stream = NULL;
+ TestCatData data;
+
+ memset (&data, 0, sizeof (data));
+ data.loop = g_main_loop_new (NULL, TRUE);
+
+ args = get_test_subprocess_args ("cat", NULL);
+ proc = g_subprocess_newv ((const gchar * const *) args->pdata,
+ G_SUBPROCESS_FLAGS_STDIN_PIPE | G_SUBPROCESS_FLAGS_STDOUT_PIPE,
+ error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ stdin_stream = g_subprocess_get_stdin_pipe (proc);
+ stdout_stream = g_subprocess_get_stdout_pipe (proc);
+
+ input_buf = g_bytes_new_static ("hello, world!", strlen ("hello, world!"));
+ input_buf_stream = g_memory_input_stream_new_from_bytes (input_buf);
+ g_bytes_unref (input_buf);
+
+ output_buf_stream = g_memory_output_stream_new (NULL, 0, g_realloc, g_free);
+
+ g_output_stream_splice_async (stdin_stream, input_buf_stream, G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
+ G_PRIORITY_DEFAULT, NULL, test_cat_on_input_splice_complete,
+ &data);
+ data.events_pending++;
+ g_output_stream_splice_async (output_buf_stream, stdout_stream, G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
+ G_PRIORITY_DEFAULT, NULL, test_cat_on_input_splice_complete,
+ &data);
+ data.events_pending++;
+
+ g_main_loop_run (data.loop);
+
+ g_subprocess_wait_check (proc, NULL, error);
+ g_assert_no_error (local_error);
+
+ output_buf = g_memory_output_stream_steal_as_bytes ((GMemoryOutputStream*)output_buf_stream);
+
+ g_assert_cmpint (g_bytes_get_size (output_buf), ==, 13);
+ g_assert_cmpint (memcmp (g_bytes_get_data (output_buf, NULL), "hello, world!", 13), ==, 0);
+
+ g_bytes_unref (output_buf);
+ g_main_loop_unref (data.loop);
+ g_object_unref (input_buf_stream);
+ g_object_unref (output_buf_stream);
+ g_object_unref (proc);
+}
+
+static gpointer
+cancel_soon (gpointer user_data)
+{
+ GCancellable *cancellable = user_data;
+
+ g_usleep (G_TIME_SPAN_SECOND);
+ g_cancellable_cancel (cancellable);
+ g_object_unref (cancellable);
+
+ return NULL;
+}
+
+static void
+test_cat_eof (void)
+{
+ GCancellable *cancellable;
+ GError *error = NULL;
+ GSubprocess *cat;
+ gboolean result;
+ gchar buffer;
+ gssize s;
+
+ /* Spawn 'cat' */
+ cat = g_subprocess_new (G_SUBPROCESS_FLAGS_STDIN_PIPE | G_SUBPROCESS_FLAGS_STDOUT_PIPE, &error, "cat", NULL);
+ g_assert_no_error (error);
+ g_assert (cat);
+
+ /* Make sure that reading stdout blocks (until we cancel) */
+ cancellable = g_cancellable_new ();
+ g_thread_unref (g_thread_new ("cancel thread", cancel_soon, g_object_ref (cancellable)));
+ s = g_input_stream_read (g_subprocess_get_stdout_pipe (cat), &buffer, sizeof buffer, cancellable, &error);
+ g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CANCELLED);
+ g_assert_cmpint (s, ==, -1);
+ g_object_unref (cancellable);
+ g_clear_error (&error);
+
+ /* Close the stream (EOF on cat's stdin) */
+ result = g_output_stream_close (g_subprocess_get_stdin_pipe (cat), NULL, &error);
+ g_assert_no_error (error);
+ g_assert (result);
+
+ /* Now check that reading cat's stdout gets us an EOF (since it quit) */
+ s = g_input_stream_read (g_subprocess_get_stdout_pipe (cat), &buffer, sizeof buffer, NULL, &error);
+ g_assert_no_error (error);
+ g_assert (!s);
+
+ /* Check that the process has exited as a result of the EOF */
+ result = g_subprocess_wait (cat, NULL, &error);
+ g_assert_no_error (error);
+ g_assert (g_subprocess_get_if_exited (cat));
+ g_assert_cmpint (g_subprocess_get_exit_status (cat), ==, 0);
+ g_assert (result);
+
+ g_object_unref (cat);
+}
+
+typedef struct {
+ guint events_pending;
+ gboolean caught_error;
+ GError *error;
+ GMainLoop *loop;
+
+ gint counter;
+ GOutputStream *first_stdin;
+} TestMultiSpliceData;
+
+static void
+on_one_multi_splice_done (GObject *obj,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ TestMultiSpliceData *data = user_data;
+
+ if (!data->caught_error)
+ {
+ if (g_output_stream_splice_finish ((GOutputStream*)obj, res, &data->error) < 0)
+ data->caught_error = TRUE;
+ }
+
+ data->events_pending--;
+ if (data->events_pending == 0)
+ g_main_loop_quit (data->loop);
+}
+
+static gboolean
+on_idle_multisplice (gpointer user_data)
+{
+ TestMultiSpliceData *data = user_data;
+
+ /* We write 2^1 + 2^2 ... + 2^10 or 2047 copies of "Hello World!\n"
+ * ultimately
+ */
+ if (data->counter >= 2047 || data->caught_error)
+ {
+ if (!g_output_stream_close (data->first_stdin, NULL, &data->error))
+ data->caught_error = TRUE;
+ data->events_pending--;
+ if (data->events_pending == 0)
+ {
+ g_main_loop_quit (data->loop);
+ }
+ return FALSE;
+ }
+ else
+ {
+ int i;
+ for (i = 0; i < data->counter; i++)
+ {
+ gsize bytes_written;
+ if (!g_output_stream_write_all (data->first_stdin, "hello world!\n",
+ strlen ("hello world!\n"), &bytes_written,
+ NULL, &data->error))
+ {
+ data->caught_error = TRUE;
+ return FALSE;
+ }
+ }
+ data->counter *= 2;
+ return TRUE;
+ }
+}
+
+static void
+on_subprocess_exited (GObject *object,
+ GAsyncResult *result,
+ gpointer user_data)
+{
+ GSubprocess *subprocess = G_SUBPROCESS (object);
+ TestMultiSpliceData *data = user_data;
+ GError *error = NULL;
+
+ if (!g_subprocess_wait_finish (subprocess, result, &error))
+ {
+ if (!data->caught_error)
+ {
+ data->caught_error = TRUE;
+ g_propagate_error (&data->error, error);
+ }
+ }
+ g_spawn_check_exit_status (g_subprocess_get_exit_status (subprocess), &error);
+ g_assert_no_error (error);
+ data->events_pending--;
+ if (data->events_pending == 0)
+ g_main_loop_quit (data->loop);
+}
+
+static void
+test_multi_1 (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GPtrArray *args;
+ GSubprocessLauncher *launcher;
+ GSubprocess *first;
+ GSubprocess *second;
+ GSubprocess *third;
+ GOutputStream *first_stdin;
+ GInputStream *first_stdout;
+ GOutputStream *second_stdin;
+ GInputStream *second_stdout;
+ GOutputStream *third_stdin;
+ GInputStream *third_stdout;
+ GOutputStream *membuf;
+ TestMultiSpliceData data;
+ int splice_flags = G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET;
+
+ args = get_test_subprocess_args ("cat", NULL);
+ launcher = g_subprocess_launcher_new (G_SUBPROCESS_FLAGS_STDIN_PIPE | G_SUBPROCESS_FLAGS_STDOUT_PIPE);
+ first = g_subprocess_launcher_spawnv (launcher, (const gchar * const *) args->pdata, error);
+ g_assert_no_error (local_error);
+ second = g_subprocess_launcher_spawnv (launcher, (const gchar * const *) args->pdata, error);
+ g_assert_no_error (local_error);
+ third = g_subprocess_launcher_spawnv (launcher, (const gchar * const *) args->pdata, error);
+ g_assert_no_error (local_error);
+
+ g_ptr_array_free (args, TRUE);
+
+ membuf = g_memory_output_stream_new (NULL, 0, g_realloc, g_free);
+
+ first_stdin = g_subprocess_get_stdin_pipe (first);
+ first_stdout = g_subprocess_get_stdout_pipe (first);
+ second_stdin = g_subprocess_get_stdin_pipe (second);
+ second_stdout = g_subprocess_get_stdout_pipe (second);
+ third_stdin = g_subprocess_get_stdin_pipe (third);
+ third_stdout = g_subprocess_get_stdout_pipe (third);
+
+ memset (&data, 0, sizeof (data));
+ data.loop = g_main_loop_new (NULL, TRUE);
+ data.counter = 1;
+ data.first_stdin = first_stdin;
+
+ data.events_pending++;
+ g_output_stream_splice_async (second_stdin, first_stdout, splice_flags, G_PRIORITY_DEFAULT,
+ NULL, on_one_multi_splice_done, &data);
+ data.events_pending++;
+ g_output_stream_splice_async (third_stdin, second_stdout, splice_flags, G_PRIORITY_DEFAULT,
+ NULL, on_one_multi_splice_done, &data);
+ data.events_pending++;
+ g_output_stream_splice_async (membuf, third_stdout, splice_flags, G_PRIORITY_DEFAULT,
+ NULL, on_one_multi_splice_done, &data);
+
+ data.events_pending++;
+ g_timeout_add (250, on_idle_multisplice, &data);
+
+ data.events_pending++;
+ g_subprocess_wait_async (first, NULL, on_subprocess_exited, &data);
+ data.events_pending++;
+ g_subprocess_wait_async (second, NULL, on_subprocess_exited, &data);
+ data.events_pending++;
+ g_subprocess_wait_async (third, NULL, on_subprocess_exited, &data);
+
+ g_main_loop_run (data.loop);
+
+ g_assert (!data.caught_error);
+ g_assert_no_error (data.error);
+
+ g_assert_cmpint (g_memory_output_stream_get_data_size ((GMemoryOutputStream*)membuf), ==, 26611);
+
+ g_main_loop_unref (data.loop);
+ g_object_unref (membuf);
+ g_object_unref (launcher);
+ g_object_unref (first);
+ g_object_unref (second);
+ g_object_unref (third);
+}
+
+static gboolean
+send_terminate (gpointer user_data)
+{
+ GSubprocess *proc = user_data;
+
+ g_subprocess_force_exit (proc);
+
+ return FALSE;
+}
+
+static void
+on_request_quit_exited (GObject *object,
+ GAsyncResult *result,
+ gpointer user_data)
+{
+ GSubprocess *subprocess = G_SUBPROCESS (object);
+ GError *error = NULL;
+
+ g_subprocess_wait_finish (subprocess, result, &error);
+ g_assert_no_error (error);
+#ifdef G_OS_UNIX
+ g_assert (g_subprocess_get_if_signaled (subprocess));
+ g_assert (g_subprocess_get_term_sig (subprocess) == 9);
+#endif
+ g_spawn_check_exit_status (g_subprocess_get_status (subprocess), &error);
+ g_assert (error != NULL);
+ g_clear_error (&error);
+
+ g_main_loop_quit ((GMainLoop*)user_data);
+}
+
+static void
+test_terminate (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GSubprocess *proc;
+ GPtrArray *args;
+ GMainLoop *loop;
+
+ args = get_test_subprocess_args ("sleep-forever", NULL);
+ proc = g_subprocess_newv ((const gchar * const *) args->pdata, G_SUBPROCESS_FLAGS_NONE, error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ loop = g_main_loop_new (NULL, TRUE);
+
+ g_subprocess_wait_async (proc, NULL, on_request_quit_exited, loop);
+
+ g_timeout_add_seconds (3, send_terminate, proc);
+
+ g_main_loop_run (loop);
+
+ g_main_loop_unref (loop);
+ g_object_unref (proc);
+}
+
+#ifdef G_OS_UNIX
+static void
+test_stdout_file (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GSubprocessLauncher *launcher;
+ GSubprocess *proc;
+ GPtrArray *args;
+ GFile *tmpfile;
+ GFileIOStream *iostream;
+ GOutputStream *stdin;
+ const char *test_data = "this is some test data\n";
+ char *tmp_contents;
+ char *tmp_file_path;
+
+ tmpfile = g_file_new_tmp ("gsubprocessXXXXXX", &iostream, error);
+ g_assert_no_error (local_error);
+ g_clear_object (&iostream);
+
+ tmp_file_path = g_file_get_path (tmpfile);
+
+ args = get_test_subprocess_args ("cat", NULL);
+ launcher = g_subprocess_launcher_new (G_SUBPROCESS_FLAGS_STDIN_PIPE);
+ g_subprocess_launcher_set_stdout_file_path (launcher, tmp_file_path);
+ proc = g_subprocess_launcher_spawnv (launcher, (const gchar * const *) args->pdata, error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ stdin = g_subprocess_get_stdin_pipe (proc);
+
+ g_output_stream_write_all (stdin, test_data, strlen (test_data), NULL, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_output_stream_close (stdin, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_subprocess_wait_check (proc, NULL, error);
+
+ g_object_unref (launcher);
+ g_object_unref (proc);
+
+ g_file_load_contents (tmpfile, NULL, &tmp_contents, NULL, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_assert_cmpstr (test_data, ==, tmp_contents);
+ g_free (tmp_contents);
+
+ (void) g_file_delete (tmpfile, NULL, NULL);
+ g_free (tmp_file_path);
+}
+
+static void
+test_stdout_fd (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GSubprocessLauncher *launcher;
+ GSubprocess *proc;
+ GPtrArray *args;
+ GFile *tmpfile;
+ GFileIOStream *iostream;
+ GFileDescriptorBased *descriptor_stream;
+ GOutputStream *stdin;
+ const char *test_data = "this is some test data\n";
+ char *tmp_contents;
+
+ tmpfile = g_file_new_tmp ("gsubprocessXXXXXX", &iostream, error);
+ g_assert_no_error (local_error);
+
+ args = get_test_subprocess_args ("cat", NULL);
+ launcher = g_subprocess_launcher_new (G_SUBPROCESS_FLAGS_STDIN_PIPE);
+ descriptor_stream = G_FILE_DESCRIPTOR_BASED (g_io_stream_get_output_stream (G_IO_STREAM (iostream)));
+ g_subprocess_launcher_take_stdout_fd (launcher, dup (g_file_descriptor_based_get_fd (descriptor_stream)));
+ proc = g_subprocess_launcher_spawnv (launcher, (const gchar * const *) args->pdata, error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ g_clear_object (&iostream);
+
+ stdin = g_subprocess_get_stdin_pipe (proc);
+
+ g_output_stream_write_all (stdin, test_data, strlen (test_data), NULL, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_output_stream_close (stdin, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_subprocess_wait_check (proc, NULL, error);
+
+ g_object_unref (launcher);
+ g_object_unref (proc);
+
+ g_file_load_contents (tmpfile, NULL, &tmp_contents, NULL, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_assert_cmpstr (test_data, ==, tmp_contents);
+ g_free (tmp_contents);
+
+ (void) g_file_delete (tmpfile, NULL, NULL);
+}
+
+static void
+child_setup (gpointer user_data)
+{
+ dup2 (GPOINTER_TO_INT (user_data), 1);
+}
+
+static void
+test_child_setup (void)
+{
+ GError *local_error = NULL;
+ GError **error = &local_error;
+ GSubprocessLauncher *launcher;
+ GSubprocess *proc;
+ GPtrArray *args;
+ GFile *tmpfile;
+ GFileIOStream *iostream;
+ GOutputStream *stdin;
+ const char *test_data = "this is some test data\n";
+ char *tmp_contents;
+ int fd;
+
+ tmpfile = g_file_new_tmp ("gsubprocessXXXXXX", &iostream, error);
+ g_assert_no_error (local_error);
+
+ fd = g_file_descriptor_based_get_fd (G_FILE_DESCRIPTOR_BASED (g_io_stream_get_output_stream (G_IO_STREAM (iostream))));
+
+ args = get_test_subprocess_args ("cat", NULL);
+ launcher = g_subprocess_launcher_new (G_SUBPROCESS_FLAGS_STDIN_PIPE);
+ g_subprocess_launcher_set_child_setup (launcher, child_setup, GINT_TO_POINTER (fd), NULL);
+ proc = g_subprocess_launcher_spawnv (launcher, (const gchar * const *) args->pdata, error);
+ g_ptr_array_free (args, TRUE);
+ g_assert_no_error (local_error);
+
+ g_clear_object (&iostream);
+
+ stdin = g_subprocess_get_stdin_pipe (proc);
+
+ g_output_stream_write_all (stdin, test_data, strlen (test_data), NULL, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_output_stream_close (stdin, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_subprocess_wait_check (proc, NULL, error);
+
+ g_object_unref (launcher);
+ g_object_unref (proc);
+
+ g_file_load_contents (tmpfile, NULL, &tmp_contents, NULL, NULL, error);
+ g_assert_no_error (local_error);
+
+ g_assert_cmpstr (test_data, ==, tmp_contents);
+ g_free (tmp_contents);
+
+ (void) g_file_delete (tmpfile, NULL, NULL);
+}
+#endif
+
+int
+main (int argc, char **argv)
+{
+ g_test_init (&argc, &argv, NULL);
+
+ g_test_add_func ("/gsubprocess/noop", test_noop);
+ g_test_add_func ("/gsubprocess/noop-all-to-null", test_noop_all_to_null);
+ g_test_add_func ("/gsubprocess/noop-no-wait", test_noop_no_wait);
+ g_test_add_func ("/gsubprocess/noop-stdin-inherit", test_noop_stdin_inherit);
+#ifdef G_OS_UNIX
+ g_test_add_func ("/gsubprocess/search-path", test_search_path);
+#endif
+ g_test_add_func ("/gsubprocess/exit1", test_exit1);
+ g_test_add_func ("/gsubprocess/echo1", test_echo1);
+#ifdef G_OS_UNIX
+ g_test_add_func ("/gsubprocess/echo-merged", test_echo_merged);
+#endif
+ g_test_add_func ("/gsubprocess/cat-utf8", test_cat_utf8);
+ g_test_add_func ("/gsubprocess/cat-eof", test_cat_eof);
+ g_test_add_func ("/gsubprocess/multi1", test_multi_1);
+ g_test_add_func ("/gsubprocess/terminate", test_terminate);
+#ifdef G_OS_UNIX
+ g_test_add_func ("/gsubprocess/stdout-file", test_stdout_file);
+ g_test_add_func ("/gsubprocess/stdout-fd", test_stdout_fd);
+ g_test_add_func ("/gsubprocess/child-setup", test_child_setup);
+#endif
+
+ return g_test_run ();
+}
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