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-rw-r--r--kernel/bpf/inode.c27
1 files changed, 13 insertions, 14 deletions
diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c
index 9948b542a470..4174f76133df 100644
--- a/kernel/bpf/inode.c
+++ b/kernel/bpf/inode.c
@@ -435,7 +435,7 @@ static int bpf_iter_link_pin_kernel(struct dentry *parent,
return ret;
}
-static int bpf_obj_do_pin(const char __user *pathname, void *raw,
+static int bpf_obj_do_pin(int path_fd, const char __user *pathname, void *raw,
enum bpf_type type)
{
struct dentry *dentry;
@@ -444,22 +444,21 @@ static int bpf_obj_do_pin(const char __user *pathname, void *raw,
umode_t mode;
int ret;
- dentry = user_path_create(AT_FDCWD, pathname, &path, 0);
+ dentry = user_path_create(path_fd, pathname, &path, 0);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
- mode = S_IFREG | ((S_IRUSR | S_IWUSR) & ~current_umask());
-
- ret = security_path_mknod(&path, dentry, mode, 0);
- if (ret)
- goto out;
-
dir = d_inode(path.dentry);
if (dir->i_op != &bpf_dir_iops) {
ret = -EPERM;
goto out;
}
+ mode = S_IFREG | ((S_IRUSR | S_IWUSR) & ~current_umask());
+ ret = security_path_mknod(&path, dentry, mode, 0);
+ if (ret)
+ goto out;
+
switch (type) {
case BPF_TYPE_PROG:
ret = vfs_mkobj(dentry, mode, bpf_mkprog, raw);
@@ -478,7 +477,7 @@ out:
return ret;
}
-int bpf_obj_pin_user(u32 ufd, const char __user *pathname)
+int bpf_obj_pin_user(u32 ufd, int path_fd, const char __user *pathname)
{
enum bpf_type type;
void *raw;
@@ -488,14 +487,14 @@ int bpf_obj_pin_user(u32 ufd, const char __user *pathname)
if (IS_ERR(raw))
return PTR_ERR(raw);
- ret = bpf_obj_do_pin(pathname, raw, type);
+ ret = bpf_obj_do_pin(path_fd, pathname, raw, type);
if (ret != 0)
bpf_any_put(raw, type);
return ret;
}
-static void *bpf_obj_do_get(const char __user *pathname,
+static void *bpf_obj_do_get(int path_fd, const char __user *pathname,
enum bpf_type *type, int flags)
{
struct inode *inode;
@@ -503,7 +502,7 @@ static void *bpf_obj_do_get(const char __user *pathname,
void *raw;
int ret;
- ret = user_path_at(AT_FDCWD, pathname, LOOKUP_FOLLOW, &path);
+ ret = user_path_at(path_fd, pathname, LOOKUP_FOLLOW, &path);
if (ret)
return ERR_PTR(ret);
@@ -527,7 +526,7 @@ out:
return ERR_PTR(ret);
}
-int bpf_obj_get_user(const char __user *pathname, int flags)
+int bpf_obj_get_user(int path_fd, const char __user *pathname, int flags)
{
enum bpf_type type = BPF_TYPE_UNSPEC;
int f_flags;
@@ -538,7 +537,7 @@ int bpf_obj_get_user(const char __user *pathname, int flags)
if (f_flags < 0)
return f_flags;
- raw = bpf_obj_do_get(pathname, &type, f_flags);
+ raw = bpf_obj_do_get(path_fd, pathname, &type, f_flags);
if (IS_ERR(raw))
return PTR_ERR(raw);