[Qemu-devel] [PULL 43/65] glib-compat: add g_spawn_async_with_fds() fallback

[Samuel Thibault]

From: Marc-André Lureau <address@hidden>

Signed-off-by: Marc-André Lureau <address@hidden>
Signed-off-by: Samuel Thibault <address@hidden>
---
 include/glib-compat.h | 56 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/include/glib-compat.h b/include/glib-compat.h
index fdf95a255d..8a078c5288 100644
--- a/include/glib-compat.h
+++ b/include/glib-compat.h
@@ -83,6 +83,62 @@ static inline gboolean g_strv_contains_qemu(const gchar 
*const *strv,
 }
 #define g_strv_contains(a, b) g_strv_contains_qemu(a, b)
 
+#if !GLIB_CHECK_VERSION(2, 58, 0)
+typedef struct QemuGSpawnFds {
+    GSpawnChildSetupFunc child_setup;
+    gpointer user_data;
+    gint stdin_fd;
+    gint stdout_fd;
+    gint stderr_fd;
+} QemuGSpawnFds;
+
+static inline void
+qemu_gspawn_fds_setup(gpointer user_data)
+{
+    QemuGSpawnFds *q = (QemuGSpawnFds *)user_data;
+
+    dup2(q->stdin_fd, 0);
+    dup2(q->stdout_fd, 1);
+    dup2(q->stderr_fd, 2);
+    q->child_setup(q->user_data);
+}
+#endif
+
+static inline gboolean
+g_spawn_async_with_fds_qemu(const gchar *working_directory,
+                            gchar **argv,
+                            gchar **envp,
+                            GSpawnFlags flags,
+                            GSpawnChildSetupFunc child_setup,
+                            gpointer user_data,
+                            GPid *child_pid,
+                            gint stdin_fd,
+                            gint stdout_fd,
+                            gint stderr_fd,
+                            GError **error)
+{
+#if GLIB_CHECK_VERSION(2, 58, 0)
+    return g_spawn_async_with_fds(working_directory, argv, envp, flags,
+                                  child_setup, user_data,
+                                  child_pid, stdin_fd, stdout_fd, stderr_fd,
+                                  error);
+#else
+    QemuGSpawnFds setup = {
+        .child_setup = child_setup,
+        .user_data = user_data,
+        .stdin_fd = stdin_fd,
+        .stdout_fd = stdout_fd,
+        .stderr_fd = stderr_fd,
+    };
+
+    return g_spawn_async(working_directory, argv, envp, flags,
+                         qemu_gspawn_fds_setup, &setup,
+                         child_pid, error);
+#endif
+}
+
+#define g_spawn_async_with_fds(wd, argv, env, f, c, d, p, ifd, ofd, efd, err) \
+    g_spawn_async_with_fds_qemu(wd, argv, env, f, c, d, p, ifd, ofd, efd, err)
 
 #if defined(_WIN32) && !GLIB_CHECK_VERSION(2, 50, 0)
 /*
-- 
2.20.1