[Buildroot] [PATCH v2 5/8] package/tmux: add /usr/bin/tmux to /etc/shells

[Romain Naour]

When tmux is selected, /usr/bin/tmux is not added to /etc/shells
(see man shells). So, login tools like dropbear reject the ssh
connexions for users using tmux as shell in /etc/passwd.

buildroot authpriv.warn dropbear[853]: User 'kubu' has invalid shell, rejected

Signed-off-by: Romain Naour <romain.naour at smile.fr>
Cc: "Yann E. MORIN" <yann.morin.1998 at free.fr>
---
v2: add double-dollar after /usr/bin/tmux (Yann)
---
 package/tmux/tmux.mk | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/package/tmux/tmux.mk b/package/tmux/tmux.mk
index 6e03d01..94833ed 100644
--- a/package/tmux/tmux.mk
+++ b/package/tmux/tmux.mk
@@ -10,4 +10,12 @@ TMUX_LICENSE = ISC
 TMUX_LICENSE_FILES = README
 TMUX_DEPENDENCIES = libevent ncurses host-pkgconf
 
+# Add /usr/bin/tmux to /etc/shells otherwise some login tools like dropbear
+# can reject the user connexion. See man shells.
+define TMUX_INSTALL_ADD_TMUX_TO_SHELLS
+	grep -qsE '^/usr/bin/tmux$$' $(TARGET_DIR)/etc/shells \
+		|| echo "/usr/bin/tmux" >> $(TARGET_DIR)/etc/shells
+endef
+TMUX_POST_INSTALL_TARGET_HOOKS += TMUX_INSTALL_ADD_TMUX_TO_SHELLS
+
 $(eval $(autotools-package))
-- 
2.7.4