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author | Lennart Poettering <lennart@poettering.net> | 2021-06-08 16:24:10 +0200 |
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committer | Lennart Poettering <lennart@poettering.net> | 2021-06-08 21:54:49 +0200 |
commit | 0b051424949f87d3980b8cfb3c0880bd4cf88d60 (patch) | |
tree | c9292b1408ce8407b9cae893a76ef49de19455e3 /src/shared/bpf-link.c | |
parent | 0fd9c28cc9487fadcddc5ea5bd0c7ca2ad525534 (diff) | |
download | systemd-0b051424949f87d3980b8cfb3c0880bd4cf88d60.tar.gz |
bpf: various coding style fixes
Mostly logging related: let's downgrade logging in dlopen_bpf() for
example, and remove duplicate logging at various places. Add %m to log
messages and so on.
Diffstat (limited to 'src/shared/bpf-link.c')
-rw-r--r-- | src/shared/bpf-link.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/src/shared/bpf-link.c b/src/shared/bpf-link.c index 405874374c..5b4708e6b4 100644 --- a/src/shared/bpf-link.c +++ b/src/shared/bpf-link.c @@ -6,15 +6,11 @@ bool can_link_bpf_program(struct bpf_program *prog) { _cleanup_(bpf_link_freep) struct bpf_link *link = NULL; - int r; assert(prog); - r = dlopen_bpf(); - if (r < 0) { - log_debug_errno(r, "Could not load libbpf: %m"); + if (dlopen_bpf() < 0) return false; - } /* Pass invalid cgroup fd intentionally. */ link = sym_bpf_program__attach_cgroup(prog, /*cgroup_fd=*/-1); @@ -24,8 +20,6 @@ bool can_link_bpf_program(struct bpf_program *prog) { } int serialize_bpf_link(FILE *f, FDSet *fds, const char *key, struct bpf_link *link) { - int fd; - assert(key); if (!link) @@ -34,11 +28,11 @@ int serialize_bpf_link(FILE *f, FDSet *fds, const char *key, struct bpf_link *li if (sym_libbpf_get_error(link) != 0) return -EINVAL; - fd = sym_bpf_link__fd(link); - return serialize_fd(f, fds, key, fd); + return serialize_fd(f, fds, key, sym_bpf_link__fd(link)); } struct bpf_link *bpf_link_free(struct bpf_link *link) { + /* Avoid a useless dlopen() if link == NULL */ if (!link) return NULL; |