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daemon: add helper function named_sock_setup 

Add named_sock_setup as helper function for socksetup to make it
easier to create more than one listen sockets. named_sock_setup could
be called more than one time and add the new sockets to the supplied
socklist_p.

Signed-off-by: Alexander Sulfrian <alexander@sulfrian.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Alexander Sulfrian 2010-08-30 13:30:50 +02:00 committed by Junio C Hamano
parent 515cc01019
commit 2caa321503
1 changed files with 33 additions and 20 deletions
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53
daemon.c
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@ -734,11 +734,17 @@ static int set_reuse_addr(int sockfd)
&on, sizeof(on));
}

struct socketlist {
int *list;
size_t nr;
size_t alloc;
};

#ifndef NO_IPV6

static int socksetup(char *listen_addr, int listen_port, int **socklist_p)
static int setup_named_sock(char *listen_addr, int listen_port, struct socketlist *socklist)
{
int socknum = 0, *socklist = NULL;
int socknum = 0;
int maxfd = -1;
char pbuf[NI_MAXSERV];
struct addrinfo hints, *ai0, *ai;
@ -753,8 +759,10 @@ static int socksetup(char *listen_addr, int listen_port, int **socklist_p)
hints.ai_flags = AI_PASSIVE;

gai = getaddrinfo(listen_addr, pbuf, &hints, &ai0);
if (gai)
die("getaddrinfo() failed: %s", gai_strerror(gai));
if (gai) {
logerror("getaddrinfo() for %s failed: %s", listen_addr, gai_strerror(gai));
return 0;
}

for (ai = ai0; ai; ai = ai->ai_next) {
int sockfd;
@ -795,8 +803,9 @@ static int socksetup(char *listen_addr, int listen_port, int **socklist_p)
if (flags >= 0)
fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC);

socklist = xrealloc(socklist, sizeof(int) * (socknum + 1));
socklist[socknum++] = sockfd;
ALLOC_GROW(socklist->list, socklist->nr + 1, socklist->alloc);
socklist->list[socklist->nr++] = sockfd;
socknum++;

if (maxfd < sockfd)
maxfd = sockfd;
@ -804,13 +813,12 @@ static int socksetup(char *listen_addr, int listen_port, int **socklist_p)

freeaddrinfo(ai0);

*socklist_p = socklist;
return socknum;
}

#else /* NO_IPV6 */

static int socksetup(char *listen_addr, int listen_port, int **socklist_p)
static int setup_named_sock(char *listen_addr, int listen_port, struct socketlist *socklist)
{
struct sockaddr_in sin;
int sockfd;
@ -851,22 +859,27 @@ static int socksetup(char *listen_addr, int listen_port, int **socklist_p)
if (flags >= 0)
fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC);

*socklist_p = xmalloc(sizeof(int));
**socklist_p = sockfd;
ALLOC_GROW(socklist->list, socklist->nr + 1, socklist->alloc);
socklist->list[socklist->nr++] = sockfd;
return 1;
}

#endif

static int service_loop(int socknum, int *socklist)
static void socksetup(char *listen_addr, int listen_port, struct socketlist *socklist)
{
setup_named_sock(listen_addr, listen_port, socklist);
}

static int service_loop(struct socketlist *socklist)
{
struct pollfd *pfd;
int i;

pfd = xcalloc(socknum, sizeof(struct pollfd));
pfd = xcalloc(socklist->nr, sizeof(struct pollfd));

for (i = 0; i < socknum; i++) {
pfd[i].fd = socklist[i];
for (i = 0; i < socklist->nr; i++) {
pfd[i].fd = socklist->list[i];
pfd[i].events = POLLIN;
}

@ -877,7 +890,7 @@ static int service_loop(int socknum, int *socklist)

check_dead_children();

if (poll(pfd, socknum, -1) < 0) {
if (poll(pfd, socklist->nr, -1) < 0) {
if (errno != EINTR) {
logerror("Poll failed, resuming: %s",
strerror(errno));
@ -886,7 +899,7 @@ static int service_loop(int socknum, int *socklist)
continue;
}

for (i = 0; i < socknum; i++) {
for (i = 0; i < socklist->nr; i++) {
if (pfd[i].revents & POLLIN) {
struct sockaddr_storage ss;
unsigned int sslen = sizeof(ss);
@ -948,10 +961,10 @@ static void store_pid(const char *path)

static int serve(char *listen_addr, int listen_port, struct passwd *pass, gid_t gid)
{
int socknum, *socklist;
struct socketlist socklist = { NULL, 0, 0 };

socknum = socksetup(listen_addr, listen_port, &socklist);
if (socknum == 0)
socksetup(listen_addr, listen_port, &socklist);
if (socklist.nr == 0)
die("unable to allocate any listen sockets on host %s port %u",
listen_addr, listen_port);

@ -960,7 +973,7 @@ static int serve(char *listen_addr, int listen_port, struct passwd *pass, gid_t
setuid(pass->pw_uid)))
die("cannot drop privileges");

return service_loop(socknum, socklist);
return service_loop(&socklist);
}

int main(int argc, char **argv)