int runsvdir_main(int argc, char **argv)
{
struct stat s;
dev_t last_dev = last_dev; /* for gcc */
ino_t last_ino = last_ino; /* for gcc */
time_t last_mtime = 0;
int wstat;
int curdir;
int pid;
unsigned deadline;
unsigned now;
unsigned stampcheck;
char ch;
int i;
argv++;
if (!*argv)
bb_show_usage();
if (argv[0][0] == '-') {
switch (argv[0][1]) {
case 'P': set_pgrp = 1;
case '-': ++argv;
}
if (!*argv)
bb_show_usage();
}
sig_catch(SIGTERM, s_term);
sig_catch(SIGHUP, s_hangup);
svdir = *argv++;
if (argv && *argv) {
rplog = *argv;
if (setup_log() != 1) {
rplog = 0;
warnx("log service disabled");
}
}
curdir = open_read(".");
if (curdir == -1)
fatal2_cannot("open current directory", "");
coe(curdir);
stampcheck = monotonic_sec();
for (;;) {
/* collect children */
for (;;) {
pid = wait_nohang(&wstat);
if (pid <= 0)
break;
for (i = 0; i < svnum; i++) {
if (pid == sv[i].pid) {
/* runsv has gone */
sv[i].pid = 0;
check = 1;
break;
}
}
}
now = monotonic_sec();
if ((int)(now - stampcheck) >= 0) {
/* wait at least a second */
stampcheck = now + 1;
if (stat(svdir, &s) != -1) {
if (check || s.st_mtime != last_mtime
|| s.st_ino != last_ino || s.st_dev != last_dev
) {
/* svdir modified */
if (chdir(svdir) != -1) {
last_mtime = s.st_mtime;
last_dev = s.st_dev;
last_ino = s.st_ino;
check = 0;
//if (now <= mtime)
// sleep(1);
runsvdir();
while (fchdir(curdir) == -1) {
warn2_cannot("change directory, pausing", "");
sleep(5);
}
} else
warn2_cannot("change directory to ", svdir);
}
} else
warn2_cannot("stat ", svdir);
}
if (rplog) {
if ((int)(now - stamplog) >= 0) {
write(logpipe[1], ".", 1);
stamplog = now + 900;
}
}
pfd[0].revents = 0;
sig_block(SIGCHLD);
deadline = (check ? 1 : 5);
if (rplog)
poll(pfd, 1, deadline*1000);
else
sleep(deadline);
sig_unblock(SIGCHLD);
if (pfd[0].revents & POLLIN) {
while (read(logpipe[0], &ch, 1) > 0) {
if (ch) {
for (i = 6; i < rploglen; i++)
rplog[i-1] = rplog[i];
rplog[rploglen-1] = ch;
}
}
}
switch (exitsoon) {
case 1:
_exit(0);
case 2:
for (i = 0; i < svnum; i++)
if (sv[i].pid)
kill(sv[i].pid, SIGTERM);
_exit(111);
}
}
/* not reached */
return 0;
}
int main(int argc, char **argv)
{
struct stat s;
time_t mtime =0;
int wstat;
int curdir;
int pid;
struct taia deadline;
struct taia now;
struct taia stampcheck;
char ch;
int i;
progname =*argv++;
if (! argv || ! *argv) usage();
if (**argv == '-')
{
switch (*(*argv +1))
{
case 'P':
pgrp =1;
case '-':
++argv;
}
if (! argv || ! *argv) usage();
}
sig_catch(sig_term, s_term);
sig_catch(sig_hangup, s_hangup);
svdir =*argv++;
if (argv && *argv)
{
rplog =*argv;
if (setup_log() != 1)
{
rplog =0;
warn3x("log service disabled.", 0, 0);
}
}
if ((curdir =open_read(".")) == -1)
fatal("unable to open current directory", 0);
coe(curdir);
taia_now(&stampcheck);
for (;;)
{
/* collect children */
for (;;)
{
if ((pid =wait_nohang(&wstat)) <= 0) break;
for (i =0; i < svnum; i++)
{
if (pid == sv[i].pid)
{
/* runsv has gone */
sv[i].pid =0;
check =1;
break;
}
}
}
taia_now(&now);
if (now.sec.x < (stampcheck.sec.x -3))
{
/* time warp */
warn3x("time warp: resetting time stamp.", 0, 0);
taia_now(&stampcheck);
taia_now(&now);
if (rplog) taia_now(&stamplog);
}
if (taia_less(&now, &stampcheck) == 0)
{
/* wait at least a second */
taia_uint(&deadline, 1);
taia_add(&stampcheck, &now, &deadline);
if (stat(svdir, &s) != -1)
{
if (check || \
s.st_mtime != mtime || s.st_ino != ino || s.st_dev != dev)
{
/* svdir modified */
if (chdir(svdir) != -1)
{
mtime =s.st_mtime;
dev =s.st_dev;
ino =s.st_ino;
check =0;
if (now.sec.x <= (4611686018427387914ULL +(uint64)mtime))
sleep(1);
runsvdir();
while (fchdir(curdir) == -1)
{
warn("unable to change directory, pausing", 0);
sleep(5);
}
}
else
warn("unable to change directory to ", svdir);
}
}
else
warn("unable to stat ", svdir);
}
if (rplog)
if (taia_less(&now, &stamplog) == 0)
{
write(logpipe[1], ".", 1);
taia_uint(&deadline, 900);
taia_add(&stamplog, &now, &deadline);
}
/* half a second */
deadline.sec.x =0;
deadline.nano =500000000UL;
deadline.atto =0;
taia_add(&deadline, &now, &deadline);
sig_block(sig_child);
if (rplog)
iopause(io, 1, &deadline, &now);
else
iopause(0, 0, &deadline, &now);
sig_unblock(sig_child);
if (rplog && (io[0].revents | IOPAUSE_READ))
while (read(logpipe[0], &ch, 1) > 0)
if (ch)
{
for (i =6; i < rploglen; i++)
rplog[i -1] =rplog[i];
rplog[rploglen -1] =ch;
}
switch(exitsoon)
{
case 1:
_exit(0);
case 2:
for (i =0; i < svnum; i++) if (sv[i].pid) kill(sv[i].pid, SIGTERM);
_exit(111);
}
} /* for (;;) */
/* not reached */
_exit(0);
}
