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authorJosé Bollo <jose.bollo@iot.bzh>2017-10-12 22:54:23 +0200
committerJan-Simon Moeller <jsmoeller@linuxfoundation.org>2017-11-30 13:13:49 +0000
commit5fccb1081844131fcc9065cf13d1b28a80e26c2d (patch)
treedbbc58f5ed76aff2ee91e427c3dd4922b3b3637e /meta-agl-bsp/recipes-kernel/linux
parentabeee5eb5ff5d60fb248c4b79de78e71e53edc82 (diff)
agl-users: Use UID for HOME directories and logins
While dealing with systemd as a launcher, it appeared a limitation. If the template argument of units is used to designate the user it can not be different that the UID as a number because systemd enforce XDG_RUNTIME_DIR to be /run/user/<UID>. Thus using UID is the way to go to use template mechanic of systemd and use systemd as launcher. This is of importance because we don't expect systemd user to have full capabilities. Instead the framework will continue to leverage systemd launching mechanism but at a system level, with full capabilities but wil only allow user applications to deal with systemd --user. This impose to use UID as template parameters. The problem is then to set the user directory to the correct value knowing only the UID and using only possibilities of units. The only way is to have user home directories of the form /SOMETHING/<UID> (where SOMETHING is merely "home"). This can be achieved either by setting a symbolic link (hard link tto directories are forbidden) or by simply using the scheme /home/UID in all cases. At the end, users within AGL will not receive nick names but will receive allocated UID. So, at the end, it is not a problem to use the regular naming scheme /home/UID, a scheme that will probably never be seen except by tools or experts. This patch implement this choice. Change-Id: I225958fa627894cb966f52a06ebd8a914058d429 Signed-off-by: José Bollo <jose.bollo@iot.bzh> Reviewed-on: https://gerrit.automotivelinux.org/gerrit/12137 Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org> ci-image-build: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org> Reviewed-by: Stéphane Desneux <stephane.desneux@iot.bzh> Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
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