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From: Martin Pitt <martinpitt@gnome.org>
Date: Sun, 31 May 2015 17:09:28 +0000
Subject: Provide fallback for reading current directory if OSC 7 fails
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=697475
Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=712628
---
src/terminal-screen.cc | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)
diff --git a/src/terminal-screen.cc b/src/terminal-screen.cc
index 54e1022..943e0ef 100644
--- a/src/terminal-screen.cc
+++ b/src/terminal-screen.cc
@@ -358,6 +358,63 @@ terminal_screen_clear_exec_data (TerminalScreen *screen,
G_DEFINE_TYPE (TerminalScreen, terminal_screen, VTE_TYPE_TERMINAL)
+static char *
+cwd_of_pid (int pid)
+{
+ static const char patterns[][18] = {
+ "/proc/%d/cwd", /* Linux */
+ "/proc/%d/path/cwd", /* Solaris >= 10 */
+ };
+ guint i;
+
+ if (pid == -1)
+ return nullptr;
+
+ /* Try to get the working directory using various OS-specific mechanisms */
+ for (i = 0; i < G_N_ELEMENTS (patterns); ++i)
+ {
+ char cwd_file[64];
+ char buf[PATH_MAX + 1];
+ int len;
+
+ /* disable "format not a string literal" error, we know what we are doing */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+ g_snprintf (cwd_file, sizeof (cwd_file), patterns[i], pid);
+#pragma GCC diagnostic pop
+ len = readlink (cwd_file, buf, sizeof (buf) - 1);
+
+ if (len > 0 && buf[0] == '/')
+ return g_strndup (buf, len);
+
+ /* If that didn't do it, try this hack */
+ if (len <= 0)
+ {
+ char *cwd, *working_dir = NULL;
+
+ cwd = g_get_current_dir ();
+ if (cwd != NULL)
+ {
+ /* On Solaris, readlink returns an empty string, but the
+ * link can be used as a directory, including as a target
+ * of chdir().
+ */
+ if (chdir (cwd_file) == 0)
+ {
+ working_dir = g_get_current_dir ();
+ (void) chdir (cwd);
+ }
+ g_free (cwd);
+ }
+
+ if (working_dir)
+ return working_dir;
+ }
+ }
+
+ return nullptr;
+}
+
static void
free_tag_data (TagData *tagdata)
{
@@ -1830,12 +1887,21 @@ terminal_screen_button_press (GtkWidget *widget,
char *
terminal_screen_get_current_dir (TerminalScreen *screen)
{
+ TerminalScreenPrivate *priv = screen->priv;
const char *uri;
uri = vte_terminal_get_current_directory_uri (VTE_TERMINAL (screen));
if (uri != nullptr)
return g_filename_from_uri (uri, nullptr, nullptr);
+ if (priv->child_pid > 0) {
+ char *cwd = cwd_of_pid (priv->child_pid);
+ if (cwd != NULL) {
+ g_debug ("terminal_screen_get_current_dir: VTE current dir n/a, reading from /proc: %s", cwd);
+ return cwd;
+ }
+ }
+
ExecData *data = screen->priv->exec_data;
if (data && data->cwd)
return g_strdup (data->cwd);
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