#include "ndelay.h"
#include "strerr.h"
#include "open.h"
#include "sgetopt.h"
#include "substdio.h"
#include "readwrite.h"
#include "exit.h"
#include "byte.h"
#include "sig.h"

#define FATAL "svc: fatal: "
#define WARNING "svc: warning: "

int datalen = 0;
char data[20];

substdio ss;
char ssbuf[1];

int fdorigdir;

void main(argc,argv)
int argc;
char **argv;
{
  int opt;
  int fd;
  char *dir;

  sig_pipeignore();

  while ((opt = getopt(argc,argv,"udorspchaitkx")) != opteof)
    if (opt == '?')
      strerr_die1x(100,"svc: usage: svc [ -udorspchaitkx ] dir ...");
    else
      if (datalen < sizeof data)
        if (byte_chr(data,datalen,opt) == datalen)
          data[datalen++] = opt;
  argv += optind;

  fdorigdir = open_read(".");
  if (fdorigdir == -1)
    strerr_die2sys(111,FATAL,"unable to open current directory: ");

  while (dir = *argv++) {
    if (fchdir(fdorigdir) == -1)
      strerr_die2sys(111,FATAL,"unable to set directory: ");
    if (chdir(dir) == -1)
      strerr_warn4(WARNING,"unable to chdir to ",dir,": ",&strerr_sys);
    else {
      fd = open_write("svcontrol");
      if (fd == -1)
        strerr_warn4(WARNING,"unable to control ",dir,": ",&strerr_sys);
      else {
        ndelay_off(fd);
        substdio_fdbuf(&ss,write,fd,ssbuf,sizeof ssbuf);
        if (substdio_putflush(&ss,data,datalen) == -1)
          strerr_warn4(WARNING,"error writing commands to ",dir,": ",&strerr_sys);
        close(fd);
      }
    }
  }

  _exit(0);
}