diff options
| author | Yonghong Song <yhs@fb.com> | 2020-05-09 20:59:06 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-05-10 03:05:26 +0300 |
| commit | 367ec3e4834cbd611401c2c40a23c22c825474f1 (patch) | |
| tree | 168079defa34ecb2b4860c765de8639bc001c222 /kernel/bpf/inode.c | |
| parent | ac51d99bf81caac8d8881fe52098948110d0de68 (diff) | |
| download | linux-367ec3e4834cbd611401c2c40a23c22c825474f1.tar.xz | |
bpf: Create file bpf iterator
To produce a file bpf iterator, the fd must be
corresponding to a link_fd assocciated with a
trace/iter program. When the pinned file is
opened, a seq_file will be generated.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200509175906.2475893-1-yhs@fb.com
Diffstat (limited to 'kernel/bpf/inode.c')
| -rw-r--r-- | kernel/bpf/inode.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c index 95087d9f4ed3..fb878ba3f22f 100644 --- a/kernel/bpf/inode.c +++ b/kernel/bpf/inode.c @@ -358,8 +358,11 @@ static int bpf_mkmap(struct dentry *dentry, umode_t mode, void *arg) static int bpf_mklink(struct dentry *dentry, umode_t mode, void *arg) { + struct bpf_link *link = arg; + return bpf_mkobj_ops(dentry, mode, arg, &bpf_link_iops, - &bpffs_obj_fops); + bpf_link_is_iter(link) ? + &bpf_iter_fops : &bpffs_obj_fops); } static struct dentry * |