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#include <unistd.h>
#include "strerr.h"
#include "error.h"
#include "sgetopt.h"
#include "scan.h"
#include "open.h"
#include "tai.h"
#include "buffer.h"
#include "fmt.h"
#define FATAL "svwaitup: fatal: "
#define WARN "svwaitup: warning: "
#define INFO "svwaitup: "
#define USAGE " [-v] [-s 1..600] service ..."
const char *progname;
unsigned long sec =2;
unsigned int rc =0;
const char * const *dir;
void fatal(const char *m) { strerr_die3sys(111, FATAL, m, ": "); }
void warn(const char *s1, const char *s2, struct strerr *e) {
dir++; rc++;
strerr_warn3(WARN, s1, s2, e);
}
void usage() { strerr_die4x(1, "usage: ", progname, USAGE, "\n"); }
int main(int argc, const char * const *argv) {
int opt;
int verbose =0;
char status[18];
int fd;
int is;
int r;
int wdir;
unsigned long pid;
struct tai when;
struct tai now;
char sulong[FMT_ULONG];
progname =*argv;
while ((opt =getopt(argc, argv, "s:vV")) != opteof) {
switch(opt) {
case 's':
scan_ulong(optarg, &sec);
if ((sec < 1) || (sec > 600)) usage();
break;
case 'v':
verbose =1;
break;
case 'V':
strerr_warn1("$Id$", 0);
case '?':
usage();
}
}
argv +=optind;
if (! argv || ! *argv) usage();
if (! (wdir =open_read(".")))
fatal("unable to open current working directory");
dir =argv;
while (*dir) {
if (dir != argv)
if (fchdir(wdir) == -1) fatal("unable to switch to starting directory");
if (chdir(*dir) == -1) {
warn(*dir, ": unable to change directory: ", &strerr_sys);
continue;
}
if ((fd =open_write("supervise/ok")) == -1) {
if (errno == error_nodevice)
warn(*dir, ": runsv not running.", 0);
else
warn(*dir, ": unable to open supervise/ok: ", &strerr_sys);
continue;
}
close(fd);
if ((fd =open_read("supervise/status")) == -1) {
warn(*dir, "unable to open supervise/status: ", &strerr_sys);
continue;
}
r =buffer_unixread(fd, status, sizeof status);
close(fd);
if (r < sizeof status) {
if (r == -1)
warn(*dir, "unable to read supervise/status: ", &strerr_sys);
else
warn(*dir, ": unable to read supervise/status: bad format.", 0);
continue;
}
pid =(unsigned char)status[15];
pid <<=8; pid +=(unsigned char)status[14];
pid <<=8; pid +=(unsigned char)status[13];
pid <<=8; pid +=(unsigned char)status[12];
if (! pid) {
warn(*dir, ": is down.", 0);
continue;
}
tai_unpack(status, &when);
tai_now(&now);
if (tai_less(&now, &when)) when =now;
tai_sub(&when, &now, &when);
is =tai_approx(&when);
if (is >= sec) {
/* ok */
if (verbose) {
sulong[fmt_ulong(sulong, is)] =0;
strerr_warn5(INFO, *dir, ": is up (", sulong, " seconds)", 0);
}
dir++;
continue;
}
sleep(sec -is);
}
if (fchdir(wdir) == -1)
strerr_warn2(WARN, "unable to switch to starting directory: ", &strerr_sys);
close(wdir);
if (rc > 100) rc =100;
_exit(rc);
}
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