| Message ID | 20231113182227.698989-1-tomas.mudrunka@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | /proc/sysrq-trigger: accept multiple keys at once | expand |
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index 6b4a28bcf..bc5a679f6 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -1154,10 +1154,12 @@ EXPORT_SYMBOL(unregister_sysrq_key); static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - if (count) { + size_t i; + + for (i = 0; i < count; i++) { char c; - if (get_user(c, buf)) + if (get_user(c, buf+i)) return -EFAULT; __handle_sysrq(c, false); }
Just for convenience. This way we can do: `echo reisub > /proc/sysrq-trigger` Instead of: `for i in r e i s u b; do echo "$i" > /proc/sysrq-trigger; done;` Signed-off-by: Tomas Mudrunka <tomas.mudrunka@gmail.com> --- drivers/tty/sysrq.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)