int fs_memcmp(void *s, void *d, size_t len)
{
register unsigned char *p1 = s;
register unsigned char *p2 = d;
int c = 0;
while (len-- && !c)
c = get_user_char((void *)(p1++)) - *p2++;
return c;
}
int tty_write(struct inode *inode, struct file *file, char *data, int len)
{
register struct tty *tty = determine_tty(inode->i_rdev);
register char *pi;
#if 0
int blocking = (file->f_flags & O_NONBLOCK) ? 0 : 1;
#endif
pi = (char *)len;
while ((int)(pi--)) {
tty_charout(tty,
get_user_char((void *)(data++))
/* , blocking */ );
}
return len;
}
static size_t lp_write(struct inode *inode, struct file *file, char *buf, int count)
{
register char *chrsp;
#if 0
/* initialize printer */
lp_reset(MINOR(inode->i_rdev));
#endif
chrsp = 0;
while (((int)chrsp) < count) {
if (!lp_char_polled((int)get_user_char((void *)(buf++)),
MINOR(inode->i_rdev)))
break;
chrsp++;
}
return (size_t)chrsp;
}
void print_syscall(register struct syscall_params *p, int retval)
{
int tmpa, tent = 0;
unsigned char i, tmpb;
/* Scan elks_syscalls for the system call info */
while ((elks_table[tent].s_num != 0) &&
(elks_table[tent].s_num != p->s_num))
tent++;
if (!elks_table[tent].s_num)
printk("Syscall not recognised: %u\n", p->s_num);
else {
#ifdef STRACE_PRINTSTACK
printk("[%d/%p: %d %s(", current->pid, current->t_regs.sp, p->s_num,
elks_table[tent].s_name);
#else
printk("[%d: %s(", current->pid, elks_table[tent].s_name);
#endif
for (i = 0; i < elks_table[tent].s_params; i++) {
if (i)
printk(", ");
switch (elks_table[tent].t_param[i]) {
case P_DATA:
printk("&0x%X", p->s_param[i]);
case P_NONE:
break;
case P_POINTER:
case P_PDATA:
printk("0x%X", p->s_param[i]);
break;
case P_UCHAR:
case P_SCHAR:
printk("'%c'", p->s_param[i]);
break;
case P_STR:
con_charout('\"');
tmpa = p->s_param[i];
while ((tmpb = get_user_char(tmpa++)))
con_charout(tmpb);
con_charout('\"');
break;
case P_PSTR:
con_charout('&');
con_charout('\"');
tmpa = p->s_param[i];
while ((tmpb = get_user_char(tmpa++)))
con_charout(tmpb);
con_charout('\"');
break;
case P_USHORT:
printk("%u", p->s_param[i]);
break;
case P_SSHORT:
printk("%d", p->s_param[i]);
break;
case P_PUSHORT:
printk("&%u", p->s_param[i]);
break;
case P_PSSHORT:
printk("&%d", p->s_param[i]);
break;
case P_SLONG:
printk("%ld", p->s_param[i]);
break;
case P_ULONG:
printk("%lu", p->s_param[i]);
break;
case P_PSLONG:
printk("%ld", get_user_long(p->s_param[i]));
break;
case P_PULONG:
printk("%lu", get_user_long(p->s_param[i]));
break;
default:
break;
}
}
}
#ifdef STRACE_RETWAIT
printk(") = %d]\n", retval);
#else
p->s_name = elks_table[tent].s_name;
printk(")]");
#endif
}
int tty_read(struct inode *inode, struct file *file, char *data, int len)
{
#if 1
register struct tty *tty = determine_tty(inode->i_rdev);
register char *pi = 0;
int j, k;
int rawmode = (tty->termios.c_lflag & ICANON) ? 0 : 1;
int blocking = (file->f_flags & O_NONBLOCK) ? 0 : 1;
unsigned char ch;
if (len != 0) {
do {
if (tty->ops->read) {
tty->ops->read(tty);
blocking = 0;
}
j = chq_getch(&tty->inq, &ch, blocking);
if (j == -1) {
if (!blocking)
break;
return -EINTR;
}
if (!rawmode && (j == 04)) /* CTRL-D */
break;
if (rawmode || (j != '\b')) {
put_user_char(ch, (void *)(data++));
++pi;
tty_echo(tty, ch);
} else if (((int)pi) > 0) {
--pi;
k = ((get_user_char((void *)(--data))
== '\t') ? TAB_SPACES : 1);
do {
tty_echo(tty, ch);
} while (--k);
}
} while (((int)pi) < len && (rawmode || j != '\n'));
}
return (int) pi;
#else
register struct tty *tty = determine_tty(inode->i_rdev);
int i = 0, j = 0, k, lch;
int rawmode = (tty->termios.c_lflag & ICANON) ? 0 : 1;
int blocking = (file->f_flags & O_NONBLOCK) ? 0 : 1;
unsigned char ch;
if (len == 0)
return 0;
do {
if (tty->ops->read) {
tty->ops->read(tty);
blocking = 0;
}
j = chq_getch(&tty->inq, &ch, blocking);
if (j == -1)
if (blocking)
return -EINTR;
else
break;
if (!rawmode && (j == 04)) /* CTRL-D */
break;
if (rawmode || (j != '\b')) {
put_user_char(ch, (void *)(data + i++));
tty_echo(tty, ch);
} else if (i > 0) {
lch = ((get_user_char((void *)(data + --i)) == '\t')
? TAB_SPACES : 1);
for (k = 0; k < lch; k++)
tty_echo(tty, ch);
}
} while (i < len && (rawmode || j != '\n'));
return i;
#endif
}
