diff options
Diffstat (limited to 'drivers/char/tty_io.c')
| -rw-r--r-- | drivers/char/tty_io.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 76592ee1fb3..0bfd1b63662 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -354,7 +354,7 @@ int tty_buffer_request_room(struct tty_struct *tty, size_t size) EXPORT_SYMBOL_GPL(tty_buffer_request_room); -int tty_insert_flip_string(struct tty_struct *tty, unsigned char *chars, size_t size) +int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size) { int copied = 0; do { @@ -378,7 +378,7 @@ int tty_insert_flip_string(struct tty_struct *tty, unsigned char *chars, size_t EXPORT_SYMBOL_GPL(tty_insert_flip_string); -int tty_insert_flip_string_flags(struct tty_struct *tty, unsigned char *chars, char *flags, size_t size) +int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size) { int copied = 0; do { @@ -543,14 +543,12 @@ void tty_ldisc_put(int disc) struct tty_ldisc *ld; unsigned long flags; - if (disc < N_TTY || disc >= NR_LDISCS) - BUG(); + BUG_ON(disc < N_TTY || disc >= NR_LDISCS); spin_lock_irqsave(&tty_ldisc_lock, flags); ld = &tty_ldiscs[disc]; - if(ld->refcount == 0) - BUG(); - ld->refcount --; + BUG_ON(ld->refcount == 0); + ld->refcount--; module_put(ld->owner); spin_unlock_irqrestore(&tty_ldisc_lock, flags); } @@ -645,8 +643,7 @@ void tty_ldisc_deref(struct tty_ldisc *ld) { unsigned long flags; - if(ld == NULL) - BUG(); + BUG_ON(ld == NULL); spin_lock_irqsave(&tty_ldisc_lock, flags); if(ld->refcount == 0) @@ -1097,8 +1094,8 @@ static void do_tty_hangup(void *data) p->signal->tty = NULL; if (!p->signal->leader) continue; - send_group_sig_info(SIGHUP, SEND_SIG_PRIV, p); - send_group_sig_info(SIGCONT, SEND_SIG_PRIV, p); + group_send_sig_info(SIGHUP, SEND_SIG_PRIV, p); + group_send_sig_info(SIGCONT, SEND_SIG_PRIV, p); if (tty->pgrp > 0) p->signal->tty_old_pgrp = tty->pgrp; } while_each_task_pid(tty->session, PIDTYPE_SID, p); @@ -2675,7 +2672,7 @@ static void __do_SAK(void *arg) tty_hangup(tty); #else struct tty_struct *tty = arg; - struct task_struct *p; + struct task_struct *g, *p; int session; int i; struct file *filp; @@ -2696,8 +2693,18 @@ static void __do_SAK(void *arg) tty->driver->flush_buffer(tty); read_lock(&tasklist_lock); + /* Kill the entire session */ do_each_task_pid(session, PIDTYPE_SID, p) { - if (p->signal->tty == tty || session > 0) { + printk(KERN_NOTICE "SAK: killed process %d" + " (%s): p->signal->session==tty->session\n", + p->pid, p->comm); + send_sig(SIGKILL, p, 1); + } while_each_task_pid(session, PIDTYPE_SID, p); + /* Now kill any processes that happen to have the + * tty open. + */ + do_each_thread(g, p) { + if (p->signal->tty == tty) { printk(KERN_NOTICE "SAK: killed process %d" " (%s): p->signal->session==tty->session\n", p->pid, p->comm); @@ -2724,7 +2731,7 @@ static void __do_SAK(void *arg) rcu_read_unlock(); } task_unlock(p); - } while_each_task_pid(session, PIDTYPE_SID, p); + } while_each_thread(g, p); read_unlock(&tasklist_lock); #endif } |