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launcher: Print a more descriptive error message when we don't get a VT

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weston-launch has two supported use cases now: either launch from
and VT login as a regular user (running within that session) or
from an init script (systemd or such) with the -u option to create
a session for the specified user.  Running from within X or ssh is
not possible.  It's still possible to run weston as root from X or ssh
but that's strictly a development/debug/test feature.

https://bugs.freedesktop.org/show_bug.cgi?id=69727
This commit is contained in:
Kristian Høgsberg 2013-10-02 13:06:02 -07:00
parent 6ff3ff57aa
commit e05f228a5f
1 changed files with 4 additions and 0 deletions
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4
src/weston-launch.c
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@ -492,6 +492,10 @@ setup_tty(struct weston_launch *wl, const char *tty)
if (wl->tty < 0)
error(1, errno, "failed to open tty");
if (fstat(wl->tty, &buf) == -1 ||
major(buf.st_rdev) != TTY_MAJOR || minor(buf.st_rdev) == 0)
error(1, 0, "weston-launch must be run from a virtual terminal");
if (tty) {
if (fstat(wl->tty, &buf) < 0)
error(1, errno, "stat %s failed", tty);