diff options
| author | Peter Huewe <peterhuewe@gmx.de> | 2011-06-07 19:58:27 (GMT) |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2011-06-15 02:48:50 (GMT) |
| commit | 22fe9b54d859e53bfbbbdc1a0a77a82bc453927c (patch) | |
| tree | 4aec2d069decbe0786ad5474908f5bbe49732ad4 /kernel/trace/trace_events.c | |
| parent | 749230b06a753a22f6ed96e5dd60815d6ab12865 (diff) | |
| download | linux-22fe9b54d859e53bfbbbdc1a0a77a82bc453927c.tar.xz | |
tracing: Convert to kstrtoul_from_user
This patch replaces the code for getting an unsigned long from a
userspace buffer by a simple call to kstroul_from_user.
This makes it easier to read and less error prone.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Link: http://lkml.kernel.org/r/1307476707-14762-1-git-send-email-peterhuewe@gmx.de
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_events.c')
| -rw-r--r-- | kernel/trace/trace_events.c | 26 |
1 files changed, 4 insertions, 22 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 686ec39..4d7e149 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -486,20 +486,11 @@ event_enable_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos) { struct ftrace_event_call *call = filp->private_data; - char buf[64]; unsigned long val; int ret; - if (cnt >= sizeof(buf)) - return -EINVAL; - - if (copy_from_user(&buf, ubuf, cnt)) - return -EFAULT; - - buf[cnt] = 0; - - ret = strict_strtoul(buf, 10, &val); - if (ret < 0) + ret = kstrtoul_from_user(ubuf, cnt, 10, &val); + if (ret) return ret; ret = tracing_update_buffers(); @@ -571,19 +562,10 @@ system_enable_write(struct file *filp, const char __user *ubuf, size_t cnt, { const char *system = filp->private_data; unsigned long val; - char buf[64]; ssize_t ret; - if (cnt >= sizeof(buf)) - return -EINVAL; - - if (copy_from_user(&buf, ubuf, cnt)) - return -EFAULT; - - buf[cnt] = 0; - - ret = strict_strtoul(buf, 10, &val); - if (ret < 0) + ret = kstrtoul_from_user(ubuf, cnt, 10, &val); + if (ret) return ret; ret = tracing_update_buffers(); |