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| author | Daniel Borkmann <daniel@iogearbox.net> | 2015-10-29 14:58:06 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-02 22:48:39 -0500 |
| commit | aa79781b65b9cf79807ade78f2703f5e9402c336 (patch) | |
| tree | 7b2eaa26b26f7c59283b87b6c44a5855dd249273 /kernel/bpf | |
| parent | 1d6119baf0610f813eb9d9580eb4fd16de5b4ceb (diff) | |
| download | linux-aa79781b65b9cf79807ade78f2703f5e9402c336.tar.gz linux-aa79781b65b9cf79807ade78f2703f5e9402c336.tar.bz2 linux-aa79781b65b9cf79807ade78f2703f5e9402c336.zip | |
bpf: abstract anon_inode_getfd invocations
Since we're going to use anon_inode_getfd() invocations in more than just
the current places, make a helper function for both, so that we only need
to pass a map/prog pointer to the helper itself in order to get a fd. The
new helpers are called bpf_map_new_fd() and bpf_prog_new_fd().
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf')
| -rw-r--r-- | kernel/bpf/syscall.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 687dd6ca574d..2b89ef0a9757 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -111,6 +111,12 @@ static const struct file_operations bpf_map_fops = { .release = bpf_map_release, }; +static int bpf_map_new_fd(struct bpf_map *map) +{ + return anon_inode_getfd("bpf-map", &bpf_map_fops, map, + O_RDWR | O_CLOEXEC); +} + /* helper macro to check that unused fields 'union bpf_attr' are zero */ #define CHECK_ATTR(CMD) \ memchr_inv((void *) &attr->CMD##_LAST_FIELD + \ @@ -141,8 +147,7 @@ static int map_create(union bpf_attr *attr) if (err) goto free_map; - err = anon_inode_getfd("bpf-map", &bpf_map_fops, map, O_RDWR | O_CLOEXEC); - + err = bpf_map_new_fd(map); if (err < 0) /* failed to allocate fd */ goto free_map; @@ -538,6 +543,12 @@ static const struct file_operations bpf_prog_fops = { .release = bpf_prog_release, }; +static int bpf_prog_new_fd(struct bpf_prog *prog) +{ + return anon_inode_getfd("bpf-prog", &bpf_prog_fops, prog, + O_RDWR | O_CLOEXEC); +} + static struct bpf_prog *get_prog(struct fd f) { struct bpf_prog *prog; @@ -647,7 +658,7 @@ static int bpf_prog_load(union bpf_attr *attr) if (err < 0) goto free_used_maps; - err = anon_inode_getfd("bpf-prog", &bpf_prog_fops, prog, O_RDWR | O_CLOEXEC); + err = bpf_prog_new_fd(prog); if (err < 0) /* failed to allocate fd */ goto free_used_maps; |