src: add Nice clause to set the nice value

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

3 files changed, 13 insertions, 2 deletions

diff --git a/src/main.c b/src/main.c
index c3271fe..8f75904 100644
--- a/src/main.c
+++ b/src/main.c
@@ -279,6 +279,7 @@ int main(int argc, char *argv[])
 
 	chdir("/");
 	close(STDIN_FILENO);
+	nice(CONFIG(nice));
 
 	/* Daemonize conntrackd */
 	if (type == DAEMON) {
diff --git a/src/read_config_lex.l b/src/read_config_lex.l
index 26c6124..a1830fd 100644
--- a/src/read_config_lex.l
+++ b/src/read_config_lex.l
@@ -35,6 +35,7 @@ nl		[\n\r]
 is_on		[o|O][n|N]
 is_off		[o|O][f|F][f|F]
 integer		[0-9]+
+signed_integer	[\-\+][0-9]+
 path		\/[^\"\n ]*
 ip4_cidr	\/[0-2]*[0-9]+
 ip4_end		[0-9]*[0-9]+
@@ -122,10 +123,12 @@ notrack		[N|n][O|o][T|t][R|r][A|a][C|c][K|k]
 "Default"			{ return T_DEFAULT; }
 "PollSecs"			{ return T_POLL_SECS; }
 "NetlinkOverrunResync"		{ return T_NETLINK_OVERRUN_RESYNC; }
+"Nice"				{ return T_NICE; }
 
 {is_on}			{ return T_ON; }
 {is_off}		{ return T_OFF; }
 {integer}		{ yylval.val = atoi(yytext); return T_NUMBER; }
+{signed_integer}	{ yylval.val = atoi(yytext); return T_SIGNED_NUMBER; }
 {ip4}			{ yylval.string = strdup(yytext); return T_IP; }
 {ip6}			{ yylval.string = strdup(yytext); return T_IP; }
 {path}			{ yylval.string = strdup(yytext); return T_PATH_VAL; }
diff --git a/src/read_config_yy.y b/src/read_config_yy.y
index 1bea865..b9a37f7 100644
--- a/src/read_config_yy.y
+++ b/src/read_config_yy.y
@@ -61,10 +61,11 @@ static void __max_mcast_dedicated_links_reached(void);
 %token T_MCAST_RCVBUFF T_MCAST_SNDBUFF T_NOTRACK T_POLL_SECS
 %token T_FILTER T_ADDRESS T_PROTOCOL T_STATE T_ACCEPT T_IGNORE
 %token T_FROM T_USERSPACE T_KERNELSPACE T_EVENT_ITER_LIMIT T_DEFAULT
-%token T_NETLINK_OVERRUN_RESYNC
+%token T_NETLINK_OVERRUN_RESYNC T_NICE
 
 %token <string> T_IP T_PATH_VAL
 %token <val> T_NUMBER
+%token <val> T_SIGNED_NUMBER
 %token <string> T_STRING
 
 %%
@@ -727,6 +728,7 @@ general_line: hashsize
 	    | poll_secs
 	    | filter
 	    | netlink_overrun_resync
+	    | nice
 	    ;
 
 netlink_buffer_size: T_BUFFER_SIZE T_NUMBER
@@ -752,7 +754,12 @@ netlink_overrun_resync : T_NETLINK_OVERRUN_RESYNC T_OFF
 netlink_overrun_resync : T_NETLINK_OVERRUN_RESYNC T_NUMBER
 {
 	conf.nl_overrun_resync = $2;
-}
+};
+
+nice : T_NICE T_SIGNED_NUMBER
+{
+	conf.nice = $2;
+};
 
 family : T_FAMILY T_STRING
 {