mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-12-25 15:06:14 +01:00
GUnixMount: port unmount to GSubprocess
The existing code is buggy and now that we have GSubprocess, we should just use it instead, allowing for some substantial reduction in complexity. https://bugzilla.gnome.org/show_bug.cgi?id=724916
This commit is contained in:
parent
cee80dc8c4
commit
64ec757d05
158
gio/gunixmount.c
158
gio/gunixmount.c
@ -28,6 +28,8 @@
|
||||
#include <unistd.h>
|
||||
|
||||
#include <glib.h>
|
||||
#include "gsubprocess.h"
|
||||
#include "gioenums.h"
|
||||
#include "gunixvolumemonitor.h"
|
||||
#include "gunixmount.h"
|
||||
#include "gunixmounts.h"
|
||||
@ -240,147 +242,55 @@ g_unix_mount_can_eject (GMount *mount)
|
||||
return unix_mount->can_eject;
|
||||
}
|
||||
|
||||
|
||||
typedef struct {
|
||||
GUnixMount *unix_mount;
|
||||
int error_fd;
|
||||
GIOChannel *error_channel;
|
||||
GSource *error_channel_source;
|
||||
GString *error_string;
|
||||
gchar **argv;
|
||||
} UnmountEjectOp;
|
||||
|
||||
static void
|
||||
unmount_eject_op_free (UnmountEjectOp *data)
|
||||
{
|
||||
if (data->error_channel_source)
|
||||
{
|
||||
g_source_destroy (data->error_channel_source);
|
||||
g_source_unref (data->error_channel_source);
|
||||
}
|
||||
g_io_channel_unref (data->error_channel);
|
||||
g_string_free (data->error_string, TRUE);
|
||||
g_strfreev (data->argv);
|
||||
close (data->error_fd);
|
||||
g_free (data);
|
||||
}
|
||||
|
||||
static void
|
||||
eject_unmount_cb (GPid pid, gint status, gpointer user_data)
|
||||
eject_unmount_done (GObject *source,
|
||||
GAsyncResult *result,
|
||||
gpointer user_data)
|
||||
{
|
||||
GSubprocess *subprocess = G_SUBPROCESS (source);
|
||||
GTask *task = user_data;
|
||||
UnmountEjectOp *data = g_task_get_task_data (task);
|
||||
|
||||
if (g_task_return_error_if_cancelled (task))
|
||||
return;
|
||||
GError *error = NULL;
|
||||
gchar *stderr_str;
|
||||
|
||||
g_spawn_close_pid (pid);
|
||||
|
||||
if (WEXITSTATUS (status) != 0)
|
||||
if (!g_subprocess_communicate_utf8_finish (subprocess, result, NULL, &stderr_str, &error))
|
||||
{
|
||||
g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_FAILED,
|
||||
"%s", data->error_string->str);
|
||||
g_task_return_error (task, error);
|
||||
g_error_free (error);
|
||||
}
|
||||
else /* successful communication */
|
||||
{
|
||||
if (!g_subprocess_get_successful (subprocess))
|
||||
/* ...but bad exit code */
|
||||
g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_FAILED, "%s", stderr_str);
|
||||
else
|
||||
/* ...and successful exit code */
|
||||
g_task_return_boolean (task, TRUE);
|
||||
|
||||
g_free (stderr_str);
|
||||
}
|
||||
else
|
||||
g_task_return_boolean (task, TRUE);
|
||||
|
||||
g_object_unref (task);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
eject_unmount_read_error (GIOChannel *channel,
|
||||
GIOCondition condition,
|
||||
gpointer user_data)
|
||||
{
|
||||
GTask *task = user_data;
|
||||
UnmountEjectOp *data = g_task_get_task_data (task);
|
||||
char buf[BUFSIZ];
|
||||
gsize bytes_read;
|
||||
GError *error;
|
||||
GIOStatus status;
|
||||
|
||||
if (g_task_return_error_if_cancelled (task))
|
||||
return FALSE;
|
||||
|
||||
error = NULL;
|
||||
read:
|
||||
status = g_io_channel_read_chars (channel, buf, sizeof (buf), &bytes_read, &error);
|
||||
if (status == G_IO_STATUS_NORMAL)
|
||||
{
|
||||
g_string_append_len (data->error_string, buf, bytes_read);
|
||||
if (bytes_read == sizeof (buf))
|
||||
goto read;
|
||||
}
|
||||
else if (status == G_IO_STATUS_EOF)
|
||||
g_string_append_len (data->error_string, buf, bytes_read);
|
||||
else if (status == G_IO_STATUS_ERROR)
|
||||
{
|
||||
if (data->error_string->len > 0)
|
||||
g_string_append (data->error_string, "\n");
|
||||
|
||||
g_string_append (data->error_string, error->message);
|
||||
g_error_free (error);
|
||||
|
||||
if (data->error_channel_source)
|
||||
{
|
||||
g_source_unref (data->error_channel_source);
|
||||
data->error_channel_source = NULL;
|
||||
}
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
eject_unmount_do_cb (gpointer user_data)
|
||||
{
|
||||
GTask *task = user_data;
|
||||
UnmountEjectOp *data = g_task_get_task_data (task);
|
||||
GPid child_pid;
|
||||
GSource *child_watch;
|
||||
GError *error = NULL;
|
||||
GSubprocess *subprocess;
|
||||
const gchar **argv;
|
||||
|
||||
argv = g_task_get_task_data (task);
|
||||
|
||||
if (g_task_return_error_if_cancelled (task))
|
||||
return G_SOURCE_REMOVE;
|
||||
|
||||
if (!g_spawn_async_with_pipes (NULL, /* working dir */
|
||||
data->argv,
|
||||
NULL, /* envp */
|
||||
G_SPAWN_DO_NOT_REAP_CHILD|G_SPAWN_SEARCH_PATH,
|
||||
NULL, /* child_setup */
|
||||
NULL, /* user_data for child_setup */
|
||||
&child_pid,
|
||||
NULL, /* standard_input */
|
||||
NULL, /* standard_output */
|
||||
&(data->error_fd),
|
||||
&error)) {
|
||||
g_assert (error != NULL);
|
||||
goto handle_error;
|
||||
}
|
||||
subprocess = g_subprocess_newv (argv, G_SUBPROCESS_FLAGS_STDOUT_SILENCE | G_SUBPROCESS_FLAGS_STDERR_PIPE, &error);
|
||||
g_assert_no_error (error);
|
||||
|
||||
data->error_string = g_string_new ("");
|
||||
|
||||
data->error_channel = g_io_channel_unix_new (data->error_fd);
|
||||
g_io_channel_set_flags (data->error_channel, G_IO_FLAG_NONBLOCK, &error);
|
||||
if (error != NULL)
|
||||
goto handle_error;
|
||||
|
||||
data->error_channel_source = g_io_create_watch (data->error_channel, G_IO_IN);
|
||||
g_task_attach_source (task, data->error_channel_source,
|
||||
(GSourceFunc) eject_unmount_read_error);
|
||||
|
||||
child_watch = g_child_watch_source_new (child_pid);
|
||||
g_task_attach_source (task, data->error_channel_source,
|
||||
(GSourceFunc) eject_unmount_cb);
|
||||
g_source_unref (child_watch);
|
||||
|
||||
handle_error:
|
||||
if (error != NULL)
|
||||
{
|
||||
g_task_return_error (task, error);
|
||||
g_object_unref (task);
|
||||
}
|
||||
g_subprocess_communicate_utf8_async (subprocess, NULL,
|
||||
g_task_get_cancellable (task),
|
||||
eject_unmount_done, task);
|
||||
|
||||
return G_SOURCE_REMOVE;
|
||||
}
|
||||
@ -393,15 +303,11 @@ eject_unmount_do (GMount *mount,
|
||||
char **argv)
|
||||
{
|
||||
GUnixMount *unix_mount = G_UNIX_MOUNT (mount);
|
||||
UnmountEjectOp *data;
|
||||
GTask *task;
|
||||
GSource *timeout;
|
||||
|
||||
data = g_new0 (UnmountEjectOp, 1);
|
||||
data->argv = g_strdupv (argv);
|
||||
|
||||
task = g_task_new (mount, cancellable, callback, user_data);
|
||||
g_task_set_task_data (task, data, (GDestroyNotify)unmount_eject_op_free);
|
||||
g_task_set_task_data (task, g_strdupv (argv), (GDestroyNotify) g_strfreev);
|
||||
|
||||
if (unix_mount->volume_monitor != NULL)
|
||||
g_signal_emit_by_name (unix_mount->volume_monitor, "mount-pre-unmount", mount);
|
||||
|
Loading…
Reference in New Issue
Block a user