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2023-01-22Update copyright yearsSergey Poznyakoff1
2022-09-05BugfixesSergey Poznyakoff1
* lib/envop.c (envop_cmp): Fix coredump on name == NULL (eval statement in env). * lib/pp.c: Add missing include. * src/comp.c: Fix format conversions. * src/pies.c (main): Call gc early, so that old components are stopped before starting new ones. Don't raise PIES_CHLD_WAKEUP. * src/progman.c (progman_gc): Call progman_cleanup before checking if any programs are left running. Fix format conversions.
2022-08-06Fix component shutdown.Sergey Poznyakoff1
* NEWS: Document changes. * doc/pies.texi: Document changes. * src/cmdline.opt: New option --list-shutdown-sequence * src/comp.c (compute_shutdown_sequence) (component_shutdown_list,components_list_shutdown_sequence) (components_shutdown_sequence_numbers): New functions. (component_config_commit): Compute shutdown sequences for each component. * src/pies.c: Handle the --list-shutdown-sequence option. * src/pies.h (component) <shutdown_seqno>: New field. (components_list_shutdown_sequence) (components_shutdown_sequence_numbers): New prototypes. * src/progman.c (progman_gc): Rewrite. (progman_stop): Rewrite. * tests/shdnseq.at: New test. * tests/sigwait.c: Take options -n and -f FILE. Open file in append mode. Lock it before writing. * tests/Makefile.am: Add new test. * tests/testsuite.at: Include new test.
2022-08-04Configurable termination signalSergey Poznyakoff1
* NEWS: Document changes. * doc/pies.texi: Document changes. * src/comp.c (component_create): Initialize sigterm field. * src/pies.h (component): New field: sigterm. * src/pies.c (strtosignum): New function. (create_action): Use strtosignum. (_cb_signal): New callback. (component_keywords): New keyword "sigterm". * src/progman.c (prog_sigterm): New function. (link_prog, progman_cleanup) (progman_stop_component): Use prog_sigterm. (print_status): Change semantics of expect_term: it means termination signal, if not 0. * tests/sigterm.at: New test. * tests/sigwait.c: New test program. * tests/Makefile.am: Add new test. (noinst_PROGRAMS): Add sigwait. * tests/testsuite.at: Include new test.
2022-01-02Update copyright yearSergey Poznyakoff1
2021-06-03Fix reloading of the configuration files.Sergey Poznyakoff1
* lib/envop.c (environ_free): Free the env block itself. (envop_cmp): New function. * lib/envop.h (envop_cmp): New proto. * src/comp.c (argvcmp): Fix segmentation fault that occurred when both a and b were NULL. (component_match): Compare command, envop, and umask.
2021-01-06Update copyright yearsSergey Poznyakoff1
2020-12-05Remove the component.facility keyword. Update the docs.Sergey Poznyakoff1
* NEWS: Update. * doc/pies.texi: Update. * src/pies.h (component): Remove the facility field. * src/comp.c: Likewise. * configure.ac: Select interface to use to close fds (imported from mailutils). * lib/closefds.c: New file (imported from mailutils). * lib/Makefile.am: Add closefds.c * lib/libpies.h (pies_close_fds): New proto. * src/pies.c: Use pies_close_fds * src/progman.c: Likewise.
2020-12-04Rewrite stdout/stderr redirectionSergey Poznyakoff1
Instead of spawning a subprocess for each redirection, read the output directly from pipe and send it to syslog using an asynchronous syslog implementation. * src/syslog.c: New file. * src/pies_syslog.h: New file. * src/Makefile.am: Add syslog.c and pies_syslog.h * src/comp.c (component_create): Use pies_log_facility. * src/ctl.c (auth_prog) (prog_serialize): Remove TYPE_REDIRECTOR case * src/diag.c (syslog_printer): Use pies_vsyslog. (syslog_open): Use pies_syslog_open. (syslog_close): Use pies_syslog_close. (diag_setup): Use pies_syslog_open. * src/pies.c (log_facility, log_tag): Remove globals. Use pies_log_facility and pies_log_tag instead. New configuration statement syslog.dev * src/pies.h: Include pies_syslog.h (register_socket,register_program_socket): Additional argument: free_data. * src/prog.h (TYPE_REDIRECTOR): Remove. (prog.v.p.redir): Change data type. (prog.v.r): Remove. * src/progman.c (prog_tag) (destroy_prog) (progman_cleanup): Remove TYPE_REDIRECTOR case (prog_stop_redirectors): Deregister fds (redir_tag,register_redir) (update_redir): Remove. (open_redirector): Rewrite. Set up direct reader from the stream, instead of spawning a subprocess. (prog_start): Change open_redirector actual arguments. * src/socket.c (sockinst): New member: free_data. (register_socket): Initialize the free_data member. (register_program_socket): Likewise.
2020-12-02New component flag: expandenvSergey Poznyakoff1
* NEWS: Update. * doc/pies.texi: Document the expandenv flag. * src/comp.c (component_finish): Warn if both "shell" and "expandenv" are used together. Expand command to argc/argv only unless the CF_EXPANDENV flag is given. * src/pies.c (str_to_cf): New flag: expandenv * src/pies.h (CF_EXPANDENV): New define. * src/prog.h (struct prog): New member: argv. * src/progman.c (destroy_prog): Free argv. (prog_start_prologue): Expand the command line taking into account the current environment if CF_EXPANDENV flag is given. Otherwise, copy the component argv to the prog. (prog_execute): Use prog->v.p.argv * tests/Makefile.am: Add expandenv.at * tests/testsuite.at: Likewise. * tests/expandenv.at: New file.
2020-10-18Fix cyclic dependecy detection and reporting.Sergey Poznyakoff1
Use modified Floyd-Warshall algorithm for cyclic dependecy detection. The computed next vertex indices are used when reporting the cycles found. This fixes dead loops that occurred in earlier versions when trying to report cycles. One of inputs that caused such behavior is used as a new test in cyclic.at. * src/depmap.c: Rewrite using modified Floyd-Warshall algorithm. (depmap_cycle_detect,depmap_path_free): New functions. * src/comp.c (report_cyclic_dependency): Take struct depmap_path * as argument. (component_build_depmap): Use depmap_cycle_detect to detect cyclic dependencies. (depmap_dump): Special handling for zero-sized depmap. * tests/cyclic.at: Add new test. * src/pies.h (depmap_dim, depmap_free) (depmap_cycle_detect,depmap_path_free): New protos. * NEWS: Document changes.
2020-10-17Update copyright yearsSergey Poznyakoff1
2019-06-24Enable/disable SystemV init code at compile timeSergey Poznyakoff1
* configure.ac: New option --enable-sysvinit. Disable the init code if RUN_LVL is not available. (PIES_SYSVINIT_ENABLED): New configuration define. (PIES_COND_SYSVINIT): New condition Print configuration settings summary. * src/pies.h (is_sysvinit): Check for PIES_SYSVINIT_ENABLED. (SYSVINIT_ACTIVE): New macro. * grecs: Upgrade. * src/Makefile.am: Conditionally link sysvinit-related code. * src/cmdline.opt: Disable the --telinit option if sysvinit support is not available. (parse_options): Use SYSVINIT_ACTIVE in the conditional. * src/comp.c (component_verify): Check if component definition is allowed by the current state of the sysvinit support. * src/ctl.c: Disable the /runlevel entry point if sysvinit support is not compiled. * src/diag.c (stderr_open): Make sure sysvinit-related code is not compiled if the sysvinit support is not available. * src/pies.c (config_syntax_tab): Add entry for CONF_INITTAB only if sysvinit support is available. (_cb_initdefault,_cb_runlevels): Remove. Use cb_initdefault and cb_runlevels instead. (component_keywords): Disable runlevels without sysvinit support. (pies_keywords): Same for initdefault. Use SYSVINIT_ACTIVE to suppress compilation of sysvinit code without sysvinit support. * src/progman.c: Use SYSVINIT_ACTIVE to suppress compilation of sysvinit code without sysvinit support. * src/sysvinit.c (cb_initdefault,cb_runlevels): New functions.
2019-06-12Check accept components and inet built-in services.Sergey Poznyakoff1
* src/comp.c (component_verify,component_finish): Fix check for the presense of the "command" statement. * src/pies.c (component_keywords): Reorder some entries for the consistency of config-help output. * tests/.gitignore: Add new files. * tests/Makefile.am: Add new tests and noinst programs. * tests/accept.at: New test. * tests/builtin.at: New test. * tests/chargen.c: New file. * tests/readtime.c: New file. * tests/recvfd.c: Rewrite for testing both accept and pass-fd components. * tests/passfd.at: Pass -s option to recvfd * tests/testsuite.at: Add new tests. * tests/lines.c: Minor changes. * tests/nt.c: Minor changes. * tests/to.c: Minor changes.
2019-06-10Fix coredumpSergey Poznyakoff1
* src/comp.c (component_build_depmap): Defer removal of the component to the end of the run
2019-06-06Change syntax of the env.clear statement.Sergey Poznyakoff1
It no longer requires an argument. The correct syntax is env { clear; }
2019-06-06Update the grecs submoduleSergey Poznyakoff1
* configure.ac (GRECS_SETUP): Request the tree-api * grecs: Pull a0c096190f * lib/envop.c (environ_set): Call wordsplit_free unconditionally. * lib/grecsasrt.c (assert_grecs_value_type) (assert_scalar_stmt): Remove. (conf_callback_url): Switch to tree-api. * lib/grecsasrt.h: Likewise. * src/acl.c: Rewrite grecs callbacks in the tree API style. Use grecs assertions. * src/acl.h: Likewise. * src/meta1parse.c: Likewise. * src/pies.c: Likewise. * src/piesctl.c: Likewise. * src/comp.c (component_finish): Check whether the "command" statement was used.
2019-06-02New configuration statement for manipulating the environment.Sergey Poznyakoff1
The "env" statement is now a compound statement. It can contain four substatements: "clear" to clear the environment, "keep" to retain certain variable while clearing it, "set" to set a variable, and "unset" to unset a variable or variables. Both "keep" and "unset" can take globbing pattern as their argument, in which case they affect all variable matching that pattern. The value part in the "set" statement is subject to variable expansion, e.g. set "MANPATH=$MANPATH${MANPATH:+:}/usr/local/man" The support for the old one-line syntax of "env" is retained for backward compatibility. This commit also fixes redirection to a file: new data are appended to the file, instead of overwriting it. * lib/Makefile.am: Add new files. * lib/envop.c: New file. * lib/envop.h: New file. * lib/wildmatch.c: New file. * src/comp.c (component_free): Update. * src/pies.c (argv_free): New function. (parse_legacy_env): New function. (_cb_env): Remove. (cb_env_section_parser): New function. (cb_env_keywords): New keywords for the "env" block statement: clear, keep, set, unset. (component_keywords): New compount statement: env. Old usage retained for backward compatibility. * src/pies.h: Include "envop.h" (component)<env>: Remove. <envop>: New field. * src/prog.h (prog)<env>: New field. * src/progman.c (redirect_to_file): Position to the end of file. (DEBUG_ENVIRON): Remove macro. (debug_environ): New function. (environ_setup): Remove. (prog_sockenv): Use environ_set to modify local copy of environment. (prog_start_prologue): Use environ_create + envop_exec to create and modify the environment. (prog_execute): Set environment to prog-local copy. * tests/.gitignore: Build envtest * tests/Makefile.am: Add new tests. * tests/testsuite.at: Add environment tests. * tests/envop.at: New file. * tests/envtest.c: New file. * tests/env.at: New file. * tests/redirect.at: Check first two lines of the output file.
2019-05-31Provide an option to run commands via sh -cSergey Poznyakoff1
The new flag "shell" instructs pies to run the command marked with it as '/bin/sh -c $command'. Alternative shell can be supplied ising the 'program' statement. This is useful if the command line uses shell-specific features (command or variable expansion, redirection, pipes, etc.) This commit also fixes a bug in the 'env' statement handling: a single argument with embedded whitespaces was undergoing word splitting and thus incorrectly handled as multiple arguments. * NEWS: Document changes. * doc/pies.texi: Likewise. * src/comp.c (component_free): Free command. (component_finish): Split command into argv/argc as directed by the CF_SHELL flag. * src/pies.c (_cb_command): Remove. Functionality moved to component_finish(). (_cb_env): Bugfix. Don't split arguments. * src/pies.h (CF_SHELL): New flag. (component) <command>: New member. * tests/Makefile.am: Add new tests. * tests/testsuite.at: Add new tests. * tests/aux/respawn: Change default timeout to 1 second. * tests/respawn.at: Minor change. * tests/shell.at: New test.
2019-05-24Don't remove finished startup components. Just mark them with status_finished.Sergey Poznyakoff1
* src/ctl.c (pies_comp_mode_str): Add pies_comp_startup and pies_comp_shutdown. * src/piesctl.c (mode_trans): Likewise. * src/progman.c (progman_startup_phase): Test the status of pies_comp_startup components. (progman_waiting_p): Test status instead of pid>0 to select running components. (progman_cleanup): Set status of the finished startup component to status_finished, instead of removing it. * src/comp.c (loaded): Remove unused variable. (component_config_commit): Remove special handling for pies_comp_startup.
2019-05-24Initial implementation of "startup" components.Sergey Poznyakoff1
These are components that are run at program startup. Starting other components is delayed until all startup components terminate. This is similar to SysV "bootwait" components. Upon termination, startup components are removed from the configuration. They are not renewed upon configuratuion reload. * src/comp.c (comp_array_remove): Remove from the depmap as well. (component_ref_decr): Use comp_array_remove for active components and plain component_free for inactive ones. (component_build_depmap): Use comp_array_remove. (component_config_commit): Special handling for pies_comp_startup components. * src/pies.c (modetab): New component modes: "startup" and "shutdown". (main): Run program_init_startup. * src/pies.h (pies_comp_mode): New modes: pies_comp_startup and pies_comp_shutdown. (program_init_startup): New proto. * src/progman.c (progman_waiting_p): Return 1 if a startup component is still running. (program_init_startup): New function. (progman_cleanup): Handle pies_comp_startup termination. * src/socket.c (switch_eids): Avoid unnecessary calls to setegid and seteuid. * tests/atlocal.in (auxdir): New variable. * tests/mailer: Move to tests/aux/ * tests/respawn: Move to tests/aux/ * tests/retcode: Move to tests/aux/ * tests/aux/startup: New auxiliary program. * tests/redirect.at: Start components from $auxdir. * tests/respawn.at: Likewise. * tests/ret-exec.at: Likewise. * tests/ret-notify.at: Likewise. * tests/startup.at: New file. * tests/testsuite.at: Include startup.at * tests/Makefile.am: Add new tests.
2019-05-23Update copyright yearsSergey Poznyakoff1
2019-05-23Revise dependency handling. Correctly display cyclic dependencies.Sergey Poznyakoff1
* src/comp.c (component_log_dep): Remove. (report_cyclic_dependency): New function. (comp_array_remove): New function. (component_build_depmap): Remove erroneous components both from the component table and dependency map. (components_dump_depmap): Avoid trailing whitespace in the output. * src/depmap.c (depmap_clear_all): Remove. (depmap_remove): New function. * src/pies.h (CF_REMOVE): New flag. (depmap_clear_all): Remove prototype. (depmap_remove): New prototype. * tests/Makefile.am: Add new test. * tests/atlocal.in (trimws): New function. * tests/cyclic.at: New test. * tests/testsuite.at: Include new test.
2019-05-17Fix coredump in components_dump_depmapSergey Poznyakoff1
Coredump was triggered by detected cyclic dependency.
2019-02-10Fix typosSergey Poznyakoff1
Spotted by Rafael Fontenelle.
2017-01-02Happy GNU YearSergey Poznyakoff1
2016-03-05ACL reference statements.Sergey Poznyakoff1
All ACL keywords can be used in simple statement as well as in block form. As simple statements, they take a name of an already defined named ACL. E.g.: defacl forbid { deny any; } component foo { list-acl forbid; } This commit also fixes some eventual double-frees. * doc/pies.texi: Update. * src/acl.c (pies_acl)<refcnt>: New member. (pies_acl_use): New function. (pies_acl_create): Initialize refcnt. (pies_acl_destroy): New function. (pies_acl_free): Rewrite as a wrapper over pies_acl_destroy. (_parse_sub_acl): Call pies_acl_use when installing a named ACL. (_acl_common_section_parser): Handle grecs_callback_set_value. * src/acl.h (pies_acl_destroy) (pies_acl_use): New function. * src/comp.c (component_free): Free acl.
2016-03-02BugfixesSergey Poznyakoff1
* src/comp.c (component_verify): Fix stdout redirection check. * src/meta1parse.c (meta1_translate_node): Skip simple statements. (meta1_translate_node): Allocate comp->dir * doc/pies.texi: Use @example instead of @smallexample
2016-02-26Improve previous commit.Sergey Poznyakoff1
* comp.c (mark_prog): Instead of calling progman_gc, terminate the prog if it is a deactivated listener.
2016-02-26Fix reconfiguration codeSergey Poznyakoff1
* src/comp.c (component_config_commit): Run progman_gc right after mark stage, to ensure any eventual listener components are properly closed before being reopened by progman_create_sockets
2016-02-24Changes in prog structureSergey Poznyakoff1
* src/prog.h (prog): Remove .facility. Use facility from the component. (active,wait,stop): Move from union into the main struct. All uses changed.
2016-02-23Improve loggingSergey Poznyakoff1
* po/POTFILES.in: Add missing source files. * grecs: Upgrade. * src/diag.c (pies_diag_printer): New function. (logfuncall): New function. * src/pies.h: Add new prototypes. * src/pies.c (main): Initialize grecs_print_diag_fun * src/acl.c: Uniformly use double-quotes in messages. Use logfuncall where applicable. * src/comp.c: Likewise. * src/ctl.c: Likewise. * src/inetd-bi.c: Likewise. * src/inetd.c: Likewise. * src/limits.c: Likewise. * src/piesctl.c: Likewise. * src/progman.c: Likewise. * src/socket.c: Likewise. * src/sysvinit.c: Likewise.
2016-02-22Provide a default single-user entry in init modeSergey Poznyakoff1
This complements 6aac230c. The entry is created unless a component for runlevel S already exists. * src/comp.c (component_foreach): New function. * src/pies.h: Likewise. * src/sysvinit.c (inittab_parse): Provide default S entry unless one is already defined.
2016-02-21Provide fall-back entry in init modeSergey Poznyakoff1
* src/sysvinit.c (inittab_parse): Provide default entry if inittab cannot be read or if it defined no components. * src/comp.c (component_list_is_empty): New function. * src/pies.c (pies_read_config): Always return 0 in init mode. (main): Use LOG_DAEMON in init mode. * src/pies.h (component_list_is_empty): New proto.
2016-02-21BugfixSergey Poznyakoff1
* src/comp.c (component_config_commit): Correctly handle empty list of components.
2016-02-19Revamp program termination after reconfiguring.Sergey Poznyakoff1
* src/pies.h (PIES_CHLD_GC): New op. (progman_stop_tag): Remove proto. * src/pies.c (main): Handle PIES_CHLD_GC: stop all programs marked for termination. * src/comp.c (component_config_commit): Mark leftover components for termination, instead of waiting for them to terminate. * src/sysvinit.c (runlevel_setup_prog): Skip prog if its active status didn't change. Mark inactivated progs for termination. (sysvinit_runlevel_setup): Schedule PIES_CHLD_GC. (inittrans): Don't wait for programs to terminate. That will be done in the main loop. * src/prog.h (prog)<stop>: New boolean member. * src/progman.c (progman_cleanup) (progman_stop_component): Clear the stop flag. (progman_gc): New function. (progman_stop_tag): Remove.
2016-02-16Associate program's activity flag with prog, instead of with component.Sergey Poznyakoff1
The CF_DISABLED flag is still retained to indicate that the component is disabled administratively. * src/prog.h (prog.v.p) <active>: New member. (IS_ACTIVE_COMPONENT): Use active flag. * src/comp.c (component_finish): Don't modify component flags. * src/ctl.c (prog_serialize): Replace attribute "disabled" with "active". (fun_stop): Set prog->v.p.active * src/pies.c (main): Use pies_master_argv to check whether program name is absolute. * src/piesctl.c (print_comp): Check "active" attribute. * src/progman.c (register_prog0): Set prog->v.p.active. (progman_create_sockets): Remove components if their socket cannot be opened. (progman_lookup_tcpmux, prog_open_socket) (prog_start, progman_start) (prog_start_prerequisites, react): Operate on prog->v.p.active to test/change prog's activity state. * src/sysvinit.c (enablecomp, runlevel_setup_prog): Operate on prog->v.p.active to test/change prog's activity state. (demand_prog, IS_RUNNING_DISABLED_PROG): Likewise.
2016-02-13Stop disabled components when switching runlevels.Sergey Poznyakoff1
* src/prog.h (status_enabled, status_disabled): Remove. (status_stopped, status_running): New modes. All uses updated. * src/comp.c (component_finish): Disable ondemand component by default. * src/ctl.c (json_object_set_bool): New function. (pies_status_str): Update. (prog_serialize): Set "disabled" attribute. (fun_stop, fun_start): Use CF_DISABLED flag. (res_runlevel): Schedule ACTION_RELOAD. * src/pies.h (json_object_set_bool): New proto. * src/piesctl.c (status_trans): Reflect changes in modes. (print_comp): Check the "disabled" attribute. * src/progman.c (register_prog0) (prog_open_socket,prog_start,prog_stop) (progman_wake_sleeping) (prog_start_prerequisites) (react, progman_cleanup) (progman_stop_component): Update. (no_children_left): Fix. * src/sysvinit.c (enablecomp): Make CF_DISABLED flag persist for ondemand components. (runlevel_setup_prog): Use CF_DISABLED flag. (inittrans): Stop inactivated processes. * doc/pies.texi: Update.
2016-02-12Improve progman API (progman_foreach and progman_stop_component).Sergey Poznyakoff1
* src/progman.c (progman_foreach): Allow filter to remove its prog argument from the list. Return integer (result of the call to filter, that returned non-zero). All uses changed. (progman_running_count): Remove. (progman_stop_component): Take a pointer to pointer. Pass it to destroy_prog when needed. All uses changed. * src/comp.c (prog_is_leftover): New function. (cb_terminate_prog): Use prog_is_leftover. Don't raise CF_DISABLED flag, as prog will have been destroyed by progman_stop_component. (cb_kill_prog): Use prog_is_leftover. * src/ctl.c (fun_stop): Check if prog still exists after the call to progman_stop_component. * src/pies.h (progman_running_count): Removed. * src/prog.h (progman_foreach): Return int. (progman_stop_component): Change signature.
2016-01-30Fix configuration reload and telinit qSergey Poznyakoff1
* src/comp.c (component_link): Always link after the REF. component. If REF is NULL, link at list head. (component_append): New function. (component_create): Use component_append. (component_free): Fix double-free. * src/pies.c (pies_reload): Call sysvinit_runlevel_setup. * src/progman.c (progman_stop_component): Remove inactive components. * src/sysvinit.c (sysvinit_fifo_handler): Schedule ACTION_RELOAD. on receiving INIT_CMD_RUNLVL. (sysvinit_sigtrans): Don't handle SIGHUP.
2016-01-29BugfixSergey Poznyakoff1
* src/comp.c (component_link): Restore "next" link.
2016-01-21Cleanup: redo configuration file handling and dependency tracking.Sergey Poznyakoff1
Implement clean configuration reload on SIGHUP. Use SIGUSR1 to restart the program (previously initiated by SIGHUP). * src/Makefile.am (pies_SOURCES): Add comp.c * src/comp.c: New file. * src/acl.c (pies_acl_free): Don't coredump on NULL arg. (_parse_from): Set cmp function for the sockaddr list. (_acl_common_section_parser): Set cmp function for the ACL (pies_acl_cmp): New function. * src/acl.h (pies_acl_cmp): New proto. * src/cmdline.opt: Remove option --dump-prereq. Add options --trace-prereq and --trace-depend. * src/ctl.c: Use prog_tag to access tag of struct prog. * src/depmap.c (depmap_clear) (depmap_clear_all): New functions. * src/inetd.c (inetd_conf_file): Don't register prog right away. This is done later in component_config_commit. (inetd_parse_conf): Rename to inetd_config_parse. * src/limits.c (limits_cmp): New function. * src/pies.c (config_file): Replace with struct config_syntax. (str_to_config_syntax): Return a pointer to struct config_syntax. (add_config): Rename to config_file_add. (config_file_add_type): New function. (return_code_keywords, create_action): Change handling of actions. (return_code_section_parser): Likewise. (component_verify, component_create) (component_free, component_finish): Move to comp.c (config_parse): Remove. (pies_config_parse): New function. (pies_read_config,pies_reload): New function. (pies_reload): Rename to request_reload. (pies_status): Rename to request_status. (pies_stop): Rename to request_stop. (main): Change configuration file handling. SIGHUP reloads configuration, instead of restarting the program. (default_sigv,sig_handler): Handle SIGUSR1. * src/pies.h (component): New members: prev, next, listidx, arridx, ref_count, prog. Remove act_head, act_tail, act_temp. Add new prototypes. * src/prog.h (prog): Remove tag and prereq. * src/progman.c (prog_tag): New function. (destroy_prog): Update component reference count. (register_redir): Likewise. (register_prog0): Take one argument. Update component reference count. (register_prog): Update comp->prog (prog_rebuild_prerequisites): Remove. (component_fixup_depend): Remove. (fixup_prerequisites,rebuild_prerequisites) (print_dep,progman_dump_prereq) (progman_dump_depmap,progman_build_depmap): Remove. (prog_start_prerequisites): Scan depmap to find prerequisites. (prog_stop_dependents): Likewise. (progman_wait): Remove. (progman_wait_until): New function. (progman_stop): Rewrite using progman_wait_until. (react): Rewrite using grecs_list * src/sysvinit.c: Use prog_tag when needed. * src/userprivs.c (pies_privs_cmp, pies_privs_free): New functions. * grecs: Update. * lib/safe_strcmp.c: New file. * lib/Makefile.am: Add safe_strcmp.c * lib/libpies.h (safe_strcmp): New proto.

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