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-rw-r--r--toys/pending/syslogd.c101
1 files changed, 48 insertions, 53 deletions
diff --git a/toys/pending/syslogd.c b/toys/pending/syslogd.c
index 4cce1c5f..5a39c736 100644
--- a/toys/pending/syslogd.c
+++ b/toys/pending/syslogd.c
@@ -11,7 +11,7 @@ config SYSLOGD
bool "syslogd"
default n
help
- Usage: syslogd [-a socket] [-p socket] [-O logfile] [-f config file] [-m interval]
+ Usage: syslogd [-a socket] [-O logfile] [-f config file] [-m interval]
[-p socket] [-s SIZE] [-b N] [-R HOST] [-l N] [-nSLKD]
System logging utility
@@ -52,25 +52,22 @@ GLOBALS(
struct arg_list *lfiles; // list of write logfiles
fd_set rfds; // fds for reading
int sd; // socket for logging remote messeges.
+ int sigfd[2];
)
#define flag_get(f,v,d) ((toys.optflags & f) ? v : d)
#define flag_chk(f) ((toys.optflags & f) ? 1 : 0)
-// Signal handling
-struct fd_pair { int rd; int wr; };
-static struct fd_pair sigfd;
-
// UNIX Sockets for listening
-typedef struct unsocks_s {
+struct unsocks {
char *path;
struct sockaddr_un sdu;
int sd;
-} unsocks_t;
+};
// Log file entry to log into.
-typedef struct logfile_s {
+struct logfile {
char *filename;
char *config;
uint8_t isNetwork;
@@ -78,26 +75,26 @@ typedef struct logfile_s {
uint8_t level[LOG_NFACILITIES];
int logfd;
struct sockaddr_in saddr;
-} logfile_t;
+};
// Adds opened socks to rfds for select()
static int addrfds(void)
{
- unsocks_t *sock;
+ struct unsocks *sock;
int ret = 0;
struct arg_list *node = TT.lsocks;
FD_ZERO(&TT.rfds);
while (node) {
- sock = (unsocks_t*) node->arg;
+ sock = (struct unsocks*) node->arg;
if (sock->sd > 2) {
FD_SET(sock->sd, &TT.rfds);
ret = sock->sd;
}
node = node->next;
}
- FD_SET(sigfd.rd, &TT.rfds);
- return (sigfd.rd > ret)?sigfd.rd:ret;
+ FD_SET(TT.sigfd[0], &TT.rfds);
+ return (TT.sigfd[0] > ret) ? TT.sigfd[0] : ret;
}
/*
@@ -108,11 +105,11 @@ static int addrfds(void)
static int open_unix_socks(void)
{
struct arg_list *node;
- unsocks_t *sock;
+ struct unsocks *sock;
int ret = 0;
for(node = TT.lsocks; node; node = node->next) {
- sock = (unsocks_t*) node->arg;
+ sock = (struct unsocks*) node->arg;
sock->sdu.sun_family = AF_UNIX;
strcpy(sock->sdu.sun_path, sock->path);
sock->sd = socket(AF_UNIX, SOCK_DGRAM, 0);
@@ -158,7 +155,7 @@ static int open_udp_socks(char *host, int port, struct sockaddr_in *sadd)
static struct arg_list *get_file_node(char *filename, struct arg_list *list)
{
while (list) {
- if (!strcmp(((logfile_t*) list->arg)->filename, filename)) return list;
+ if (!strcmp(((struct logfile*) list->arg)->filename, filename)) return list;
list = list->next;
}
return list;
@@ -168,7 +165,7 @@ static struct arg_list *get_file_node(char *filename, struct arg_list *list)
* recurses the logfile list and resolves config
* for evry file and updates facilty and log level bits.
*/
-static int resolve_config(logfile_t *file)
+static int resolve_config(struct logfile *file)
{
char *tk, *fac, *lvl, *tmp, *nfac;
int count = 0;
@@ -254,7 +251,7 @@ static int resolve_config(logfile_t *file)
// Parse config file and update the log file list.
static int parse_config_file(void)
{
- logfile_t *file;
+ struct logfile *file;
FILE *fp = NULL;
char *confline = NULL, *tk = NULL, *tokens[2] = {NULL, NULL};
int len, linelen, tcount, lineno = 0;
@@ -266,7 +263,7 @@ static int parse_config_file(void)
*/
if (flag_chk(FLAG_K)) {
node = xzalloc(sizeof(struct arg_list));
- file = xzalloc(sizeof(logfile_t));
+ file = xzalloc(sizeof(struct logfile));
file->filename = "/dev/kmsg";
file->config = "*.*";
memset(file->level, 0xFF, sizeof(file->level));
@@ -283,7 +280,7 @@ static int parse_config_file(void)
*/
if (flag_chk(FLAG_R)) {
node = xzalloc(sizeof(struct arg_list));
- file = xzalloc(sizeof(logfile_t));
+ file = xzalloc(sizeof(struct logfile));
file->filename = xmsprintf("@%s",TT.remote_log);
file->isNetwork = 1;
file->config = "*.*";
@@ -331,7 +328,7 @@ static int parse_config_file(void)
node = get_file_node(tokens[1], TT.lfiles);
if (!node) {
node = xzalloc(sizeof(struct arg_list));
- file = xzalloc(sizeof(logfile_t));
+ file = xzalloc(sizeof(struct logfile));
file->config = xstrdup(tokens[0]);
if (resolve_config(file)==-1) {
error_msg("error in '%s' at line %d", TT.config_file, lineno);
@@ -343,7 +340,7 @@ static int parse_config_file(void)
node->next = TT.lfiles;
TT.lfiles = node;
} else {
- file = (logfile_t*) node->arg;
+ file = (struct logfile*) node->arg;
int rel = strlen(file->config) + strlen(tokens[0]) + 2;
file->config = xrealloc(file->config, rel);
sprintf(file->config, "%s;%s", file->config, tokens[0]);
@@ -360,7 +357,7 @@ loop_again:
*/
if (!fp){
node = xzalloc(sizeof(struct arg_list));
- file = xzalloc(sizeof(logfile_t));
+ file = xzalloc(sizeof(struct logfile));
file->filename = flag_get(FLAG_O, TT.logfile, "/var/log/messages"); //DEFLOGFILE
file->isNetwork = 0;
file->config = "*.*";
@@ -395,13 +392,13 @@ static int getport(char *str, char *filename)
// open every log file in list.
static void open_logfiles(void)
{
- logfile_t *tfd;
+ struct logfile *tfd;
char *p, *tmpfile;
int port = -1;
struct arg_list *node = TT.lfiles;
while (node) {
- tfd = (logfile_t*) node->arg;
+ tfd = (struct logfile*) node->arg;
if (tfd->isNetwork) {
tmpfile = xstrdup(tfd->filename +1);
if ((p = strchr(tmpfile, ':'))) {
@@ -420,7 +417,7 @@ static void open_logfiles(void)
}
//write to file with rotation
-static int write_rotate( logfile_t *tf, int len)
+static int write_rotate(struct logfile *tf, int len)
{
int size, isreg;
struct stat statf;
@@ -531,7 +528,7 @@ do_log:
if (lvl >= TT.log_prio) return;
while (lnode) {
- logfile_t *tf = (logfile_t*) lnode->arg;
+ struct logfile *tf = (struct logfile*) lnode->arg;
if (tf->logfd > 0) {
if ((tf->facility[lvl] & (1 << fac)) && (tf->level[fac] & (1<<lvl))) {
int wlen;
@@ -554,8 +551,8 @@ static void cleanup(void)
struct arg_list *fnode;
while (TT.lsocks) {
fnode = TT.lsocks;
- if (((unsocks_t*) fnode->arg)->sd >= 0)
- close(((unsocks_t*) fnode->arg)->sd);
+ if (((struct unsocks*) fnode->arg)->sd >= 0)
+ close(((struct unsocks*) fnode->arg)->sd);
free(fnode->arg);
TT.lsocks = fnode->next;
free(fnode);
@@ -564,8 +561,8 @@ static void cleanup(void)
while (TT.lfiles) {
fnode = TT.lfiles;
- if (((logfile_t*) fnode->arg)->logfd >= 0)
- close(((logfile_t*) fnode->arg)->logfd);
+ if (((struct logfile*) fnode->arg)->logfd >= 0)
+ close(((struct logfile*) fnode->arg)->logfd);
free(fnode->arg);
TT.lfiles = fnode->next;
free(fnode);
@@ -575,26 +572,12 @@ static void cleanup(void)
static void signal_handler(int sig)
{
unsigned char ch = sig;
- if (write(sigfd.wr, &ch, 1) != 1) error_msg("can't send signal");
-}
-
-static void setup_signal()
-{
- if (pipe((int *)&sigfd) < 0) error_exit("pipe failed\n");
-
- fcntl(sigfd.wr , F_SETFD, FD_CLOEXEC);
- fcntl(sigfd.rd , F_SETFD, FD_CLOEXEC);
- int flags = fcntl(sigfd.wr, F_GETFL);
- fcntl(sigfd.wr, F_SETFL, flags | O_NONBLOCK);
- signal(SIGHUP, signal_handler);
- signal(SIGTERM, signal_handler);
- signal(SIGINT, signal_handler);
- signal(SIGQUIT, signal_handler);
+ if (write(TT.sigfd[1], &ch, 1) != 1) error_msg("can't send signal");
}
void syslogd_main(void)
{
- unsocks_t *tsd;
+ struct unsocks *tsd;
int maxfd, retval, last_len=0;
struct timeval tv;
struct arg_list *node;
@@ -606,7 +589,7 @@ void syslogd_main(void)
TT.config_file = flag_get(FLAG_f, TT.config_file, "/etc/syslog.conf"); //DEFCONFFILE
init_jumpin:
TT.lsocks = xzalloc(sizeof(struct arg_list));
- tsd = xzalloc(sizeof(unsocks_t));
+ tsd = xzalloc(sizeof(struct unsocks));
tsd->path = flag_get(FLAG_p, TT.unix_socket , "/dev/log"); // DEFLOGSOCK
TT.lsocks->arg = (char*) tsd;
@@ -615,7 +598,7 @@ init_jumpin:
for (temp = strtok(TT.socket, ":"); temp; temp = strtok(NULL, ":")) {
struct arg_list *ltemp = xzalloc(sizeof(struct arg_list));
if (strlen(temp) > 107) temp[108] = '\0';
- tsd = xzalloc(sizeof(unsocks_t));
+ tsd = xzalloc(sizeof(struct unsocks));
tsd->path = temp;
ltemp->arg = (char*) tsd;
ltemp->next = TT.lsocks;
@@ -626,7 +609,19 @@ init_jumpin:
error_msg("Can't open single socket for listenning.");
goto clean_and_exit;
}
- setup_signal();
+
+ // Setup signals
+ if (pipe(TT.sigfd) < 0) error_exit("pipe failed\n");
+
+ fcntl(TT.sigfd[1] , F_SETFD, FD_CLOEXEC);
+ fcntl(TT.sigfd[0] , F_SETFD, FD_CLOEXEC);
+ int flags = fcntl(TT.sigfd[1], F_GETFL);
+ fcntl(TT.sigfd[1], F_SETFL, flags | O_NONBLOCK);
+ signal(SIGHUP, signal_handler);
+ signal(SIGTERM, signal_handler);
+ signal(SIGINT, signal_handler);
+ signal(SIGQUIT, signal_handler);
+
if (parse_config_file() == -1) goto clean_and_exit;
open_logfiles();
if (!flag_chk(FLAG_n)) {
@@ -659,10 +654,10 @@ init_jumpin:
logmsg("<46>-- MARK --", 14);
continue;
}
- if (FD_ISSET(sigfd.rd, &TT.rfds)) { /* May be a signal */
+ if (FD_ISSET(TT.sigfd[0], &TT.rfds)) { /* May be a signal */
unsigned char sig;
- if (read(sigfd.rd, &sig, 1) != 1) {
+ if (read(TT.sigfd[0], &sig, 1) != 1) {
error_msg("signal read failed.\n");
continue;
}
@@ -690,7 +685,7 @@ init_jumpin:
if (retval > 0) { /* Some activity on listen sockets. */
node = TT.lsocks;
while (node) {
- int sd = ((unsocks_t*) node->arg)->sd;
+ int sd = ((struct unsocks*) node->arg)->sd;
if (FD_ISSET(sd, &TT.rfds)) {
int len = read(sd, buffer, 1023); //buffer is of 1K, hence readingonly 1023 bytes, 1 for NUL
if (len > 0) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 07:03:17 +0000