diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-23 08:08:53 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-24 15:41:53 -0700 |
| commit | ab214d1bf8c7ef1ed7af803a72491cb29edfa8f5 (patch) | |
| tree | 117d3206c77bb63d0de5347c28a116ae8369ff24 /net/netfilter/x_tables.c | |
| parent | 7e4b9dbabb2ad0d108d12939e34d4d330104ac6d (diff) | |
| download | linux-ab214d1bf8c7ef1ed7af803a72491cb29edfa8f5.tar.gz | |
netfilter: switch xt_copy_counters to sockptr_t
Pass a sockptr_t to prepare for set_fs-less handling of the kernel
pointer from bpf-cgroup.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter/x_tables.c')
| -rw-r--r-- | net/netfilter/x_tables.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index 32bab45af7e415..b97eb4b538fd4e 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -1028,9 +1028,9 @@ int xt_check_target(struct xt_tgchk_param *par, EXPORT_SYMBOL_GPL(xt_check_target); /** - * xt_copy_counters_from_user - copy counters and metadata from userspace + * xt_copy_counters - copy counters and metadata from a sockptr_t * - * @user: src pointer to userspace memory + * @arg: src sockptr * @len: alleged size of userspace memory * @info: where to store the xt_counters_info metadata * @@ -1047,8 +1047,8 @@ EXPORT_SYMBOL_GPL(xt_check_target); * Return: returns pointer that caller has to test via IS_ERR(). * If IS_ERR is false, caller has to vfree the pointer. */ -void *xt_copy_counters_from_user(const void __user *user, unsigned int len, - struct xt_counters_info *info) +void *xt_copy_counters(sockptr_t arg, unsigned int len, + struct xt_counters_info *info) { void *mem; u64 size; @@ -1062,12 +1062,12 @@ void *xt_copy_counters_from_user(const void __user *user, unsigned int len, return ERR_PTR(-EINVAL); len -= sizeof(compat_tmp); - if (copy_from_user(&compat_tmp, user, sizeof(compat_tmp)) != 0) + if (copy_from_sockptr(&compat_tmp, arg, sizeof(compat_tmp)) != 0) return ERR_PTR(-EFAULT); memcpy(info->name, compat_tmp.name, sizeof(info->name) - 1); info->num_counters = compat_tmp.num_counters; - user += sizeof(compat_tmp); + sockptr_advance(arg, sizeof(compat_tmp)); } else #endif { @@ -1075,10 +1075,10 @@ void *xt_copy_counters_from_user(const void __user *user, unsigned int len, return ERR_PTR(-EINVAL); len -= sizeof(*info); - if (copy_from_user(info, user, sizeof(*info)) != 0) + if (copy_from_sockptr(info, arg, sizeof(*info)) != 0) return ERR_PTR(-EFAULT); - user += sizeof(*info); + sockptr_advance(arg, sizeof(*info)); } info->name[sizeof(info->name) - 1] = '\0'; @@ -1092,13 +1092,13 @@ void *xt_copy_counters_from_user(const void __user *user, unsigned int len, if (!mem) return ERR_PTR(-ENOMEM); - if (copy_from_user(mem, user, len) == 0) + if (copy_from_sockptr(mem, arg, len) == 0) return mem; vfree(mem); return ERR_PTR(-EFAULT); } -EXPORT_SYMBOL_GPL(xt_copy_counters_from_user); +EXPORT_SYMBOL_GPL(xt_copy_counters); #ifdef CONFIG_COMPAT int xt_compat_target_offset(const struct xt_target *target) |