aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--include/linux/sched.h5
-rw-r--r--kernel/signal.c57
2 files changed, 52 insertions, 10 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 660b02f80523..dd6c2164e4a4 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1267,6 +1267,11 @@ extern int send_sig_info(int, struct siginfo *, struct task_struct *);
extern int send_group_sig_info(int, struct siginfo *, struct task_struct *);
extern int force_sigsegv(int, struct task_struct *);
extern int force_sig_info(int, struct siginfo *, struct task_struct *);
+extern int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp);
+extern int kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp);
+extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid);
+extern int kill_pgrp(struct pid *pid, int sig, int priv);
+extern int kill_pid(struct pid *pid, int sig, int priv);
extern int __kill_pg_info(int sig, struct siginfo *info, pid_t pgrp);
extern int kill_pg_info(int, struct siginfo *, pid_t);
extern int kill_proc_info(int, struct siginfo *, pid_t);
diff --git a/kernel/signal.c b/kernel/signal.c
index fb5da6d19f14..5230ddcb1757 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1055,28 +1055,44 @@ int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
}
/*
- * kill_pg_info() sends a signal to a process group: this is what the tty
+ * kill_pgrp_info() sends a signal to a process group: this is what the tty
* control characters do (^C, ^Z etc)
*/
-int __kill_pg_info(int sig, struct siginfo *info, pid_t pgrp)
+int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp)
{
struct task_struct *p = NULL;
int retval, success;
- if (pgrp <= 0)
- return -EINVAL;
-
success = 0;
retval = -ESRCH;
- do_each_task_pid(pgrp, PIDTYPE_PGID, p) {
+ do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
int err = group_send_sig_info(sig, info, p);
success |= !err;
retval = err;
- } while_each_task_pid(pgrp, PIDTYPE_PGID, p);
+ } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
return success ? 0 : retval;
}
+int kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp)
+{
+ int retval;
+
+ read_lock(&tasklist_lock);
+ retval = __kill_pgrp_info(sig, info, pgrp);
+ read_unlock(&tasklist_lock);
+
+ return retval;
+}
+
+int __kill_pg_info(int sig, struct siginfo *info, pid_t pgrp)
+{
+ if (pgrp <= 0)
+ return -EINVAL;
+
+ return __kill_pgrp_info(sig, info, find_pid(pgrp));
+}
+
int
kill_pg_info(int sig, struct siginfo *info, pid_t pgrp)
{
@@ -1089,8 +1105,7 @@ kill_pg_info(int sig, struct siginfo *info, pid_t pgrp)
return retval;
}
-int
-kill_proc_info(int sig, struct siginfo *info, pid_t pid)
+int kill_pid_info(int sig, struct siginfo *info, struct pid *pid)
{
int error;
int acquired_tasklist_lock = 0;
@@ -1101,7 +1116,7 @@ kill_proc_info(int sig, struct siginfo *info, pid_t pid)
read_lock(&tasklist_lock);
acquired_tasklist_lock = 1;
}
- p = find_task_by_pid(pid);
+ p = pid_task(pid, PIDTYPE_PID);
error = -ESRCH;
if (p)
error = group_send_sig_info(sig, info, p);
@@ -1111,6 +1126,16 @@ kill_proc_info(int sig, struct siginfo *info, pid_t pid)
return error;
}
+int
+kill_proc_info(int sig, struct siginfo *info, pid_t pid)
+{
+ int error;
+ rcu_read_lock();
+ error = kill_pid_info(sig, info, find_pid(pid));
+ rcu_read_unlock();
+ return error;
+}
+
/* like kill_proc_info(), but doesn't use uid/euid of "current" */
int kill_proc_info_as_uid(int sig, struct siginfo *info, pid_t pid,
uid_t uid, uid_t euid, u32 secid)
@@ -1264,6 +1289,18 @@ force_sigsegv(int sig, struct task_struct *p)
return 0;
}
+int kill_pgrp(struct pid *pid, int sig, int priv)
+{
+ return kill_pgrp_info(sig, __si_special(priv), pid);
+}
+EXPORT_SYMBOL(kill_pgrp);
+
+int kill_pid(struct pid *pid, int sig, int priv)
+{
+ return kill_pid_info(sig, __si_special(priv), pid);
+}
+EXPORT_SYMBOL(kill_pid);
+
int
kill_pg(pid_t pgrp, int sig, int priv)
{

Privacy Policy