diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-04-24 08:43:38 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-04-27 08:07:40 +0200 |
| commit | 32927393dc1ccd60fb2bdc05b9e8e88753761469 (patch) | |
| tree | c488a5564cdde7594c953219a98e22fb4865c812 /kernel/utsname_sysctl.c | |
| parent | sysctl: avoid forward declarations (diff) | |
| download | linux-32927393dc1ccd60fb2bdc05b9e8e88753761469.tar.xz linux-32927393dc1ccd60fb2bdc05b9e8e88753761469.zip | |
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/utsname_sysctl.c')
| -rw-r--r-- | kernel/utsname_sysctl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c index 3732c888a949..4ca61d49885b 100644 --- a/kernel/utsname_sysctl.c +++ b/kernel/utsname_sysctl.c @@ -30,7 +30,7 @@ static void *get_uts(struct ctl_table *table) * to observe. Should this be in kernel/sys.c ???? */ static int proc_do_uts_string(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table uts_table; int r; |