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authorAuke Kok <auke-jan.h.kok@intel.com>2012-05-17 12:17:42 -0700
committerLennart Poettering <lennart@poettering.net>2012-05-21 17:57:48 +0200
commit940c5210344e90428287e4f8878a9064e8869e22 (patch)
treef0d8fa8d3fac1dff09e5d5b9b04e990c963b07b4 /man/sd_login_monitor_new.xml
parent5b40d33761376354116a8cddb9b9fbdb6c4727d6 (diff)
sd-pam: Drop uid so parent signal arrives at child.
The PAM helper thread needs to capture the death signal from the parent, but is prohibited from doing so since when the child dies as normal user, the kernel won't allow it to send a TERM to the PAM helper thread which is running as root. This causes the PAM threads to never exit, accumulating after user sessions exit. There is however really no need to keep the PAM threads running as root, so, we can just setresuid() to the same user as defined in the unit file for the parent thread (User=). This makes the TERM signal arrive as normal. In case setresuid() fails, we ignore the error, so we at least fall back to the current behaviour.
Diffstat (limited to 'man/sd_login_monitor_new.xml')
0 files changed, 0 insertions, 0 deletions