[Buildroot] [PATCH 3/7] package/dash: add /etc/dash to /etc/shells

[Romain Naour]

When dash is selected, /bin/dash is not added to /etc/shells
(see man shells). So, login tools like dropbear reject the ssh
connexions for users using dash 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>
---
 package/dash/dash.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/package/dash/dash.mk b/package/dash/dash.mk
index c8b4164..391c06e 100644
--- a/package/dash/dash.mk
+++ b/package/dash/dash.mk
@@ -9,8 +9,12 @@ DASH_SITE = http://gondor.apana.org.au/~herbert/dash/files
 DASH_LICENSE = BSD-3-Clause, GPL-2.0+ (mksignames.c)
 DASH_LICENSE_FILES = COPYING
 
+# Add /bin/dash to /etc/shells otherwise some login tools like dropbear
+# can reject the user connexion. See man shells.
 define DASH_INSTALL_TARGET_CMDS
 	$(INSTALL) -m 0755 $(@D)/src/dash $(TARGET_DIR)/bin/dash
+	grep -qsE '^/bin/dash' $(TARGET_DIR)/etc/shells \
+		|| echo "/bin/dash" >> $(TARGET_DIR)/etc/shells
 endef
 
 $(eval $(autotools-package))
-- 
2.7.4