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weston-launch: Clear environment and set it up from scratch

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With recent systemd[1] XDG_VTNR will leak through to pam, which ends up
setting a vtnr pam argument with the wrong value.  The fix is to clear
XDG_VTNR first, but what we should have been doing all along is resetting
the environment.

Thanks to Ray Strode for helping debug this.

[1] http://cgit.freedesktop.org/systemd/systemd/commit/?id=a8573ccc35a4efe8900be5d48c6c803670540c2b
This commit is contained in:
Kristian Høgsberg 2013-01-29 14:14:06 -05:00
parent c0d79ce2ba
commit 272d243e00
1 changed files with 6 additions and 6 deletions
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12
src/weston-launch.c
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@ -556,6 +556,12 @@ main(int argc, char *argv[])
if (wl.pw == NULL)
error(1, errno, "failed to get username");
clearenv();
setenv("USER", wl.pw->pw_name, 1);
setenv("LOGNAME", wl.pw->pw_name, 1);
setenv("HOME", wl.pw->pw_dir, 1);
setenv("SHELL", wl.pw->pw_shell, 1);
if (!weston_launch_allowed(&wl))
error(1, 0, "Permission denied. You should either:\n"
#ifdef HAVE_SYSTEMD_LOGIN
@ -605,12 +611,6 @@ main(int argc, char *argv[])
sleep(sleep_fork);
}
if (new_user) {
setenv("USER", wl.pw->pw_name, 1);
setenv("LOGNAME", wl.pw->pw_name, 1);
setenv("HOME", wl.pw->pw_dir, 1);
setenv("SHELL", wl.pw->pw_shell, 1);
}
env = pam_getenvlist(wl.ph);
if (env) {
for (i = 0; env[i]; ++i) {