asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags)
{
struct file *in;
int error, fput_in;
if (unlikely(!len))
return 0;
error = -EBADF;
in = fget_light(fdin, &fput_in);
if (in) {
if (in->f_mode & FMODE_READ) {
int fput_out;
struct file *out = fget_light(fdout, &fput_out);
if (out) {
if (out->f_mode & FMODE_WRITE)
error = do_tee(in, out, len, flags);
fput_light(out, fput_out);
}
}
fput_light(in, fput_in);
}
return error;
}
int command_tee (int argc, char **argv)
{
int i, in, out;
char *ptr;
in = STDIN_FILENO;
out = STDOUT_FILENO;
progname = argv[0];
for (i = 1; i < argc; ++i)
{
ptr = argv[i];
if (*ptr == '-')
{
while (*++ptr)
switch (*ptr)
{
case '-':
if (!strcmp (ptr, "-help"))
puts (help_text);
else if (!strcmp (ptr, "-version"))
puts ("tee: version "VERSION);
else
terror ("invalid option `%s'", argv[i]);
return (EXIT_SUCCESS);
case 'a':
flag_append = 1;
continue;
case 'i':
flag_ignore = 1;
continue;
}
}
else
{
}
}
do_tee (in, out);
return (EXIT_SUCCESS);
}
