void runsvdir()
{
DIR *dir;
direntry *d;
int i;
struct stat s;
if (! (dir =opendir(".")))
{
warn("unable to open directory ", svdir);
return;
}
for (i =0; i < svnum; i++) sv[i].isgone =1;
errno =0;
while ((d =readdir(dir)))
{
if (d->d_name[0] == '.') continue;
if (stat(d->d_name, &s) == -1)
{
warn("unable to stat ", d->d_name);
errno =0;
continue;
}
if (! S_ISDIR(s.st_mode)) continue;
for (i =0; i < svnum; i++)
{
if ((sv[i].ino == s.st_ino) && (sv[i].dev == s.st_dev))
{
sv[i].isgone =0;
if (! sv[i].pid) runsv(i, d->d_name);
break;
}
}
if (i == svnum)
{
/* new service */
if (svnum >= MAXSERVICES)
{
warn3x("unable to start runsv ", d->d_name, ": too many services.");
continue;
}
sv[i].ino =s.st_ino;
sv[i].dev =s.st_dev;
sv[i].pid =0;
sv[i].isgone =0;
svnum++;
runsv(i, d->d_name);
check =1;
}
}
if (errno)
{
warn("unable to read directory ", svdir);
closedir(dir);
check =1;
return;
}
closedir(dir);
/* SIGTERM removed runsv's */
for (i =0; i < svnum; i++)
{
if (! sv[i].isgone) continue;
if (sv[i].pid) kill(sv[i].pid, SIGTERM);
sv[i] =sv[--svnum];
check =1;
}
}
static void runsvdir(void)
{
DIR *dir;
direntry *d;
int i;
struct stat s;
dir = opendir(".");
if (!dir) {
warn2_cannot("open directory ", svdir);
return;
}
for (i = 0; i < svnum; i++)
sv[i].isgone = 1;
errno = 0;
while ((d = readdir(dir))) {
if (d->d_name[0] == '.')
continue;
if (stat(d->d_name, &s) == -1) {
warn2_cannot("stat ", d->d_name);
errno = 0;
continue;
}
if (!S_ISDIR(s.st_mode))
continue;
for (i = 0; i < svnum; i++) {
if ((sv[i].ino == s.st_ino) && (sv[i].dev == s.st_dev)) {
sv[i].isgone = 0;
if (!sv[i].pid)
runsv(i, d->d_name);
break;
}
}
if (i == svnum) {
/* new service */
struct service *svnew = realloc(sv, (i+1) * sizeof(*sv));
if (!svnew) {
warn3x("cannot start runsv ", d->d_name,
" too many services");
continue;
}
sv = svnew;
svnum++;
memset(&sv[i], 0, sizeof(sv[i]));
sv[i].ino = s.st_ino;
sv[i].dev = s.st_dev;
/*sv[i].pid = 0;*/
/*sv[i].isgone = 0;*/
runsv(i, d->d_name);
check = 1;
}
}
if (errno) {
warn2_cannot("read directory ", svdir);
closedir(dir);
check = 1;
return;
}
closedir(dir);
/* SIGTERM removed runsv's */
for (i = 0; i < svnum; i++) {
if (!sv[i].isgone)
continue;
if (sv[i].pid)
kill(sv[i].pid, SIGTERM);
sv[i] = sv[--svnum];
check = 1;
}
}
/* gcc 4.3.0 does better with NOINLINE */
static NOINLINE int do_rescan(void)
{
DIR *dir;
struct dirent *d;
int i;
struct stat s;
int need_rescan = 0;
dir = opendir(".");
if (!dir) {
warn2_cannot("open directory ", svdir);
return 1; /* need to rescan again soon */
}
for (i = 0; i < svnum; i++)
sv[i].isgone = 1;
while (1) {
errno = 0;
d = readdir(dir);
if (!d)
break;
if (d->d_name[0] == '.')
continue;
if (stat(d->d_name, &s) == -1) {
warn2_cannot("stat ", d->d_name);
continue;
}
if (!S_ISDIR(s.st_mode))
continue;
/* Do we have this service listed already? */
for (i = 0; i < svnum; i++) {
if ((sv[i].ino == s.st_ino)
#if CHECK_DEVNO_TOO
&& (sv[i].dev == s.st_dev)
#endif
) {
if (sv[i].pid == 0) /* restart if it has died */
goto run_ith_sv;
sv[i].isgone = 0; /* "we still see you" */
goto next_dentry;
}
}
{ /* Not found, make new service */
struct service *svnew = realloc(sv, (i+1) * sizeof(*sv));
if (!svnew) {
warn2_cannot("start runsv ", d->d_name);
need_rescan = 1;
continue;
}
sv = svnew;
svnum++;
#if CHECK_DEVNO_TOO
sv[i].dev = s.st_dev;
#endif
sv[i].ino = s.st_ino;
run_ith_sv:
sv[i].pid = runsv(d->d_name);
sv[i].isgone = 0;
}
next_dentry: ;
}
i = errno;
closedir(dir);
if (i) { /* readdir failed */
warn2_cannot("read directory ", svdir);
return 1; /* need to rescan again soon */
}
/* Send SIGTERM to runsv whose directories
* were no longer found (-> must have been removed) */
for (i = 0; i < svnum; i++) {
if (!sv[i].isgone)
continue;
if (sv[i].pid)
kill(sv[i].pid, SIGTERM);
svnum--;
sv[i] = sv[svnum];
i--; /* so that we don't skip new sv[i] (bug was here!) */
}
return need_rescan;
}