sssctl: Flags for command initialization Allow passing flags for command specific initialization. Currently only one flag is available to skip the confdb initialization which is required to improve config-check command. Resolves: https://fedorahosted.org/sssd/ticket/3209 Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

TOOLS: Some tools command might not need initialization to succeed Since we want to use the sssctl tool during upgrade, we need to amend the tools initialization code to not error out if sysdb can't be instantiated, but rather return errno and let the tool handle the error. Each tool command now has a 'allowed errno' the command is able to handle. In this patch iteration, only a single errno can be handled and only the upgrade command is able to do so. Reviewed-by: Sumit Bose <sbose@redhat.com>

SYSDB: Remove useless parameter from sysdb_init() The function sysdb_init() is never used to allow upgrade, so the allow_upgrade parameter was pointless. Reviewed-by: Sumit Bose <sbose@redhat.com>

confdb: Make it possible to use config snippets Resolves: https://fedorahosted.org/sssd/ticket/2247 Signed-off-by: Lukas Slebodnik <lslebodn@redhat.com> Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com> Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

sss_tools: create confdb if not exist So tools (especially sssctl) may be run even when databases where removed. Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

sss_tools: return errno_t instead of system code Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

sss_tools: pad help message properly Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

sss_tools: add commands delimiter Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

sss_tools: tell whether an option was provided Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

sss_tools: unify description of --debug Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

sss_tools: add help commands to usage message Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

sss_tools: add command description Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

tools: read additional data of the master domain Resolves: https://fedorahosted.org/sssd/ticket/2989 Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

sss_tools: do not allow unexpected free argument Reviewed-by: Pavel Reichl <preichl@redhat.com>

sss_tools: always show common and help options popt don't handle merging NULL option table, thus common and help options were not displayed when command doesn't have any options. Reviewed-by: Pavel Reichl <preichl@redhat.com>

util: Update get_next_domain's interface Update get next domain to be able to include disbled domains and change the interface to accept flags instead of multiple booleans. Ticket: https://fedorahosted.org/sssd/ticket/2673 Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

sss tools: improve option handling The crash describe by ticket #2802 is caused by providing NULL options in popt and yet trying to iterate over them. Instead of simply testing for NULL this patch creates a new option table table merges several option tables together, thus improving and simplifying usage string. Resolves: https://fedorahosted.org/sssd/ticket/2802 Reviewed-by: Pavel Reichl <preichl@redhat.com>

sss_override: document --debug options Resolves: https://fedorahosted.org/sssd/ticket/2758 Reviewed-by: Petr Cech <pcech@redhat.com>

TOOLS: add common command framework Add general framework to simplify creating "cmd COMMAND [OPTIONS...]" style tools. Preparation for: https://fedorahosted.org/sssd/ticket/2584 Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>