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authorChristoph Hellwig <hch@lst.de>2020-04-24 08:43:38 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2020-04-27 02:07:40 -0400
commit32927393dc1ccd60fb2bdc05b9e8e88753761469 (patch)
treec488a5564cdde7594c953219a98e22fb4865c812 /fs/xfs
parentf461d2dcd511c020a26d4d791fae595c65ed09b6 (diff)
downloadlinux-32927393dc1ccd60fb2bdc05b9e8e88753761469.tar.bz2
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 'fs/xfs')
-rw-r--r--fs/xfs/xfs_sysctl.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/xfs/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c
index 31b3bdbd2eba..021ef96d0542 100644
--- a/fs/xfs/xfs_sysctl.c
+++ b/fs/xfs/xfs_sysctl.c
@@ -13,7 +13,7 @@ STATIC int
xfs_stats_clear_proc_handler(
struct ctl_table *ctl,
int write,
- void __user *buffer,
+ void *buffer,
size_t *lenp,
loff_t *ppos)
{
@@ -33,7 +33,7 @@ STATIC int
xfs_panic_mask_proc_handler(
struct ctl_table *ctl,
int write,
- void __user *buffer,
+ void *buffer,
size_t *lenp,
loff_t *ppos)
{