Merge pull request #15168 from mjstapp/daemon_logs

lib,vtysh: add per-daemon log file config

doc/user/basic.rst

@@ -129,6 +129,20 @@ Basic Config Commands
    deprecated ``log trap`` command) will be used. The ``no`` form of the command
    disables logging to a file.
 
+.. clicmd:: log daemon DAEMON file [FILENAME [LEVEL]]
+
+   Configure file logging for a single FRR daemon. If you want to log
+   into a file, please specify ``filename`` as in this example:
+
+   ::
+
+      log daemon bgpd file /var/log/frr/bgpd.log informational
+
+   If the optional second argument specifying the logging level is not present,
+   the default logging level (typically debugging, but can be changed using the
+   deprecated ``log trap`` command) will be used. The ``no`` form of the command
+   disables logging to a file for a single FRR daemon.
+
 .. clicmd:: log syslog [LEVEL]
 
    Enable logging output to syslog. If the optional second argument specifying

lib/.gitignore

@@ -11,3 +11,4 @@
 /grammar_sandbox
 /clippy
 /defun_lex.c
+vtysh_daemons.h

lib/log_vty.c

@@ -15,6 +15,7 @@
 #include "lib/lib_errors.h"
 #include "lib/printfrr.h"
 #include "lib/systemd.h"
+#include "lib/vtysh_daemons.h"
 
 #include "lib/log_vty_clippy.c"
 
@@ -459,6 +460,70 @@ DEFUN (clear_log_cmdline,
 	return CMD_SUCCESS;
 }
 
+/* Per-daemon log file config */
+DEFUN (config_log_dmn_file,
+       config_log_dmn_file_cmd,
+       "log daemon " DAEMONS_LIST " file FILENAME [<emergencies|alerts|critical|errors|warnings|notifications|informational|debugging>$levelarg]",
+       "Logging control\n"
+       "Specific daemon\n"
+       DAEMONS_STR
+       "Logging to file\n"
+       "Logging filename\n"
+       LOG_LEVEL_DESC)
+{
+	int level = log_default_lvl;
+	int idx = 0;
+	const char *d_str;
+	const char *filename;
+	const char *levelarg = NULL;
+
+	d_str = argv[2]->text;
+
+	/* Ignore if not for this daemon */
+	if (!strmatch(d_str, frr_get_progname()))
+		return CMD_SUCCESS;
+
+	if (argv_find(argv, argc, "file", &idx))
+		filename = argv[idx + 1]->arg;
+	else
+		return CMD_SUCCESS;
+
+	if (argc > 5)
+		levelarg = argv[5]->text;
+
+	if (levelarg) {
+		level = log_level_match(levelarg);
+		if (level == ZLOG_DISABLED)
+			return CMD_ERR_NO_MATCH;
+	}
+	return set_log_file(&zt_file, vty, filename, level);
+}
+
+/* Per-daemon no log file */
+DEFUN (no_config_log_dmn_file,
+       no_config_log_dmn_file_cmd,
+       "no log daemon " DAEMONS_LIST " file [FILENAME [LEVEL]]",
+       NO_STR
+       "Logging control\n"
+       "Specific daemon\n"
+       DAEMONS_STR
+       "Cancel logging to file\n"
+       "Logging file name\n"
+       "Logging level\n")
+{
+	const char *d_str;
+
+	d_str = argv[3]->text;
+
+	/* Ignore if not for this daemon */
+	if (!strmatch(d_str, frr_get_progname()))
+		return CMD_SUCCESS;
+
+	zt_file.prio_min = ZLOG_DISABLED;
+	zlog_file_set_other(&zt_file);
+	return CMD_SUCCESS;
+}
+
 DEFPY (config_log_file,
        config_log_file_cmd,
        "log file FILENAME [<emergencies|alerts|critical|errors|warnings|notifications|informational|debugging>$levelarg]",
@@ -904,6 +969,8 @@ void log_cmd_init(void)
 	install_element(CONFIG_NODE, &config_log_monitor_cmd);
 	install_element(CONFIG_NODE, &no_config_log_monitor_cmd);
 	install_element(CONFIG_NODE, &config_log_file_cmd);
+	install_element(CONFIG_NODE, &config_log_dmn_file_cmd);
+	install_element(CONFIG_NODE, &no_config_log_dmn_file_cmd);
 	install_element(CONFIG_NODE, &no_config_log_file_cmd);
 	install_element(CONFIG_NODE, &config_log_syslog_cmd);
 	install_element(CONFIG_NODE, &no_config_log_syslog_cmd);

lib/subdir.am

@@ -540,12 +540,22 @@ EXTRA_DIST += \
 BUILT_SOURCES += \
 	lib/gitversion.h \
 	lib/route_types.h \
+	lib/vtysh_daemons.h \
 	# end
 
 ## force route_types.h
 $(lib_clippy_OBJECTS): lib/route_types.h
 $(lib_libfrr_la_OBJECTS): lib/route_types.h
 
+# force lib_daemons.h
+$(lib_libfrr_la_OBJECTS): lib/vtysh_daemons.h
+
+CLEANFILES += lib/vtysh_daemons.h
+lib/vtysh_daemons.h:
+	@$(MKDIR_P) lib
+	$(PERL) $(top_srcdir)/vtysh/daemons.pl $(vtysh_daemons) > lib/vtysh_daemons.h
+
+
 AM_YFLAGS = -d -Dapi.prefix=@BISON_OPENBRACE@cmd_yy@BISON_CLOSEBRACE@ @BISON_VERBOSE@
 
 lib/command_lex.h: lib/command_lex.c

vtysh/.gitignore

@@ -1,6 +1,5 @@
 vtysh
 vtysh_cmd.c
-vtysh_daemons.h
 
 # does not exist anymore - remove 2023-10-04 or so
 extract.pl

vtysh/subdir.am

@@ -29,13 +29,3 @@ noinst_HEADERS += \
 vtysh_vtysh_LDADD = lib/libfrr.la $(LIBCAP) $(LIBREADLINE) $(LIBS) $(LIBPAM)
 
 EXTRA_DIST += vtysh/daemons.pl
-
-BUILT_SOURCES += vtysh/vtysh_daemons.h
-
-# force vtysh_daemons.h
-$(vtysh_vtysh_OBJECTS): vtysh/vtysh_daemons.h
-
-CLEANFILES += vtysh/vtysh_daemons.h
-vtysh/vtysh_daemons.h:
-	@$(MKDIR_P) vtysh
-	$(PERL) $(top_srcdir)/vtysh/daemons.pl $(vtysh_daemons) > vtysh/vtysh_daemons.h

vtysh/vtysh.c

@@ -31,7 +31,7 @@
 #include "network.h"
 #include "filter.h"
 #include "vtysh/vtysh.h"
-#include "vtysh/vtysh_daemons.h"
+#include "lib/vtysh_daemons.h"
 #include "log.h"
 #include "vrf.h"
 #include "libfrr.h"