Change Details

r325740 moved dhclient to the cap_syslog service, while r341692 changed cap_syslog to inherit stdio descriptors from its parent process. The broke the ability to capture dhclient's foreground output, as the cap_syslog service now holds the original stdio descriptors open after dhclient daemonizes. Add a new libcasper(3) call, cap_close_stdio() to allow a parent process to revoke stdin/stdout/stderr access from a casper service, and consume that call in dhclient.

r325740 moved dhclient to the cap_syslog service, while r341692 changed cap_syslog to inherit stdio descriptors from its parent process. The broke the ability to capture dhclient's foreground output, as the cap_syslog service now holds the original stdio descriptors open after dhclient daemonizes. Add a new libcasper(3) call, cap_close_stdio() to allow a parent process to revoke stdin/stdout/stderr access from a casper service, and consume that call in dhclient. PR: 234514

r325740 moved dhclient to the cap_syslog service, while r341692 changed cap_syslog to inherit stdio descriptors from its parent process. The broke the ability to capture dhclient's foreground output, as the cap_syslog service now holds the original stdio descriptors open after dhclient daemonizes. Add a new libcasper(3) call, cap_close_stdio() to allow a parent process to revoke stdin/stdout/stderr access from a casper service, and consume that call in dhclient. PR: 234514