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Upstream-Status: Backport
Signed-off-by: Ross Burton <ross.burton@intel.com>

From ff3230952a68077669e0ea0ac3ceb234273556fc Mon Sep 17 00:00:00 2001
From: Quentin Glidic <sardemff7+git@sardemff7.net>
Date: Fri, 17 May 2013 16:20:37 +0200
Subject: [PATCH] weston-launch: Run weston in the user login shell

This patch brings back the user environment from the shell.
In the future, weston-launch could create the Wayland socket earlier, in
which case the user's shell could be used to run Wayland-specific tools
in the new Weston session.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
---
 src/weston-launch.c |   19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/weston-launch.c b/src/weston-launch.c
index 64d4a8a..89c3c5a 100644
--- a/src/weston-launch.c
+++ b/src/weston-launch.c
@@ -60,6 +60,8 @@
 
 #include "weston-launch.h"
 
+#define MAX_ARGV_SIZE 256
+
 struct weston_launch {
 	struct pam_conv pc;
 	pam_handle_t *ph;
@@ -523,8 +525,9 @@ main(int argc, char *argv[])
 	struct weston_launch wl;
 	char **env;
 	int i, c;
-	char **child_argv;
+	char *child_argv[MAX_ARGV_SIZE];
 	char *tty = NULL, *new_user = NULL;
+	char *term;
 	int sleep_fork = 0;
 	struct option opts[] = {
 		{ "user",    required_argument, NULL, 'u' },
@@ -562,8 +565,8 @@ main(int argc, char *argv[])
 		}
 	}
 
-	child_argv = &argv[optind-1];
-	child_argv[0] = BINDIR "/weston";
+	if ((argc - optind) > (MAX_ARGV_SIZE - 5))
+		error(1, E2BIG, "Too many arguments to pass to weston");
 
 	if (new_user)
 		wl.pw = getpwnam(new_user);
@@ -572,7 +575,17 @@ main(int argc, char *argv[])
 	if (wl.pw == NULL)
 		error(1, errno, "failed to get username");
 
+	child_argv[0] = wl.pw->pw_shell;
+	child_argv[1] = "-l";
+	child_argv[2] = "-c";
+	child_argv[3] = BINDIR "/weston \"$@\"";
+	child_argv[4] = "weston";
+	for (i = 0; i < (argc - optind); ++i)
+		child_argv[5+i] = argv[optind+i];
+
+	term = getenv("TERM");
 	clearenv();
+	setenv("TERM", term, 1);
 	setenv("USER", wl.pw->pw_name, 1);
 	setenv("LOGNAME", wl.pw->pw_name, 1);
 	setenv("HOME", wl.pw->pw_dir, 1);
-- 
1.7.10.4