static void
waitchildren(const char *name, int waitall)
{
pid_t pid;
int status;
while ((pid = xwait(waitall || pids_full(), &status)) > 0) {
/* If we couldn't invoke the utility, exit. */
if (childerr != 0) {
errno = childerr;
err(errno == ENOENT ? 127 : 126, "%s", name);
}
/*
* If utility signaled or exited with a value of 255,
* exit 1-125.
*/
if (WIFSIGNALED(status))
errx(1, "%s: terminated with signal %d, aborting",
name, WTERMSIG(status));
if (WEXITSTATUS(status) == 255)
errx(1, "%s: exited with status 255, aborting", name);
if (WEXITSTATUS(status))
rval = 1;
}
if (pid == -1 && errno != ECHILD)
err(1, "waitpid");
}
void lpwd()
{
pid_t pid;
my_putstr("SUCCESS : Working Directory Path\n");
pid = xfork();
if (pid == 0)
execlp("pwd", "pwd", NULL);
else
xwait(NULL);
my_putstr("{ftp} ");
}
void lls(char *buffer)
{
char opt[CMD];
char *pointer;
pid_t pid;
get_info_c(opt, buffer, my_strlen(buffer));
pointer = opt;
if (opt[0] == '\0')
pointer = NULL;
my_putstr("SUCCESS : Working Listing\n");
pid = xfork();
if (pid == 0)
execlp("/bin/sh", "sh", "-c", "ls -la", NULL);
else
xwait(NULL);
my_putstr("{ftp} ");
}
shell()
{
register int i;
register char *p;
register char *shellfile;
char *getfilename();
char *macro();
shellfile = getfilename();
if (*shellfile == 0)
shellfile = 0;
fclose(Qryiop);
if ((Xwaitpid = fork()) == -1)
syserr("shell: fork");
if (Xwaitpid == 0)
{
setuid(getuid());
# ifndef xB_UNIX
setgid(getgid());
# endif
for (i = 3; i < MAXFILES; i++)
close(i);
p = macro("{shell}");
# ifdef xMTR3
tTfp(7, 0, "{shell} = '%o'\n", p);
# endif
if (p != 0)
{
execl(p, p, shellfile, Qbname, 0);
printf("Cannot call %s; using /bin/sh\n", p);
}
execl("/bin/sh", "sh", shellfile, Qbname, 0);
syserr("shell: exec");
}
if (Nodayfile >= 0)
printf(">>shell\n");
/* wait for shell to complete */
xwait();
}
static void
waitchildren(const char *name, int waitall)
{
pid_t pid;
int status;
int cause_exit = 0;
while ((pid = xwait(waitall || pids_full(), &status)) > 0) {
/*
* If we couldn't invoke the utility or if utility exited
* because of a signal or with a value of 255, warn (per
* POSIX), and then wait until all other children have
* exited before exiting 1-125. POSIX requires us to stop
* reading if child exits because of a signal or with 255,
* but it does not require us to exit immediately; waiting
* is preferable to orphaning.
*/
if (childerr != 0 && cause_exit == 0) {
errno = childerr;
waitall = 1;
cause_exit = ENOENT ? 127 : 126;
warn("%s", name);
} else if (WIFSIGNALED(status)) {
waitall = cause_exit = 1;
warnx("%s: terminated with signal %d; aborting",
name, WTERMSIG(status));
} else if (WEXITSTATUS(status) == 255) {
waitall = cause_exit = 1;
warnx("%s: exited with status 255; aborting", name);
} else if (WEXITSTATUS(status))
rval = 1;
}
if (cause_exit)
exit(cause_exit);
if (pid == -1 && errno != ECHILD)
err(1, "waitpid");
}
