base-files: add /etc/profile.d support

OpenWrt should support an optional /etc/profile.d directory like
most other Linux distributions. This allows packages to install
their own scripts into /etc/profile.d/ directory.

The file suffix should make clear, that these scripts
are (sourced) shell-snippets. If the user needs e.g. php or lua,
one must make sure that the interpreter is called.
The reverse failsafe test makes sure, that the effective returncode is 0.

A typcal usecase is the inclusion of private helpers,
special variables or aliases, which at the moment needs
patching the sourcecode and is not well maintainable.
Now the builder can simply add there files.

v1 initial work of Hendrik Lüth <hendrik@linux-nerds.de>
v2 changes regarding RFC (e.g. thomas.langer@lantiq.com)
v3 changes regarding RFC (e.g. mschiffer@universe-factory.net)
v4 keep it simple and mimic OpenWrt style

Signed-off-by: Bastian Bittorf <bittorf@bluebottle.com>
Backport of r46965

SVN-Revision: 48862

diff --git a/package/base-files/files/etc/profile b/package/base-files/files/etc/profile
index 170f48783375804d15faa72d9a45e228a153e69f..bd008a84d70fad6cf50fa74be5b0906e92161889 100644 (file)
--- a/package/base-files/files/etc/profile
+++ b/package/base-files/files/etc/profile
@@ -14,3 +14,10 @@ export PS1='\u@\h:\w\$ '
 
 [ -x /usr/bin/arp ] || arp() { cat /proc/net/arp; }
 [ -x /usr/bin/ldd ] || ldd() { LD_TRACE_LOADED_OBJECTS=1 $*; }
+
+[ -n "$FAILSAFE" ] || {
+       for FILE in /etc/profile.d/*.sh; do
+               [ -e "$FILE" ] && . "$FILE"
+       done
+       unset FILE
+}