diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-04-24 09:43:38 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-04-27 09:07:40 +0300 |
| commit | 32927393dc1ccd60fb2bdc05b9e8e88753761469 (patch) | |
| tree | c488a5564cdde7594c953219a98e22fb4865c812 /kernel/trace | |
| parent | f461d2dcd511c020a26d4d791fae595c65ed09b6 (diff) | |
| download | linux-32927393dc1ccd60fb2bdc05b9e8e88753761469.tar.xz | |
sysctl: pass kernel pointers to ->proc_handler
Instead of having all the sysctl handlers deal with user pointers, which
is rather hairy in terms of the BPF interaction, copy the input to and
from userspace in common code. This also means that the strings are
always NUL-terminated by the common code, making the API a little bit
safer.
As most handler just pass through the data to one of the common handlers
a lot of the changes are mechnical.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8d2b98812625..167a74a15b1a 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2661,7 +2661,7 @@ static void output_printk(struct trace_event_buffer *fbuffer) } int tracepoint_printk_sysctl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { int save_tracepoint_printk; |