diff options
Diffstat (limited to 'src/gen_bpf.c')
| -rw-r--r-- | src/gen_bpf.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/src/gen_bpf.c b/src/gen_bpf.c index 5e1aad5..a8b3314 100644 --- a/src/gen_bpf.c +++ b/src/gen_bpf.c @@ -2240,34 +2240,37 @@ build_bpf_free_blks: /** * Generate a BPF representation of the filter DB * @param col the seccomp filter collection + * @param prgm_ptr the bpf program pointer * * This function generates a BPF representation of the given filter collection. - * Returns a pointer to a valid bpf_program on success, NULL on failure. + * Returns zero on success, negative values on failure. * */ -struct bpf_program *gen_bpf_generate(const struct db_filter_col *col) +int gen_bpf_generate(const struct db_filter_col *col, + struct bpf_program **prgm_ptr) { int rc; struct bpf_state state; struct bpf_program *prgm; if (col->filter_cnt == 0) - return NULL; + return -EINVAL; memset(&state, 0, sizeof(state)); state.attr = &col->attr; - prgm = zmalloc(sizeof(*(prgm))); - if (prgm == NULL) - return NULL; - state.bpf = prgm; + state.bpf = zmalloc(sizeof(*(prgm))); + if (state.bpf == NULL) + return -ENOMEM; rc = _gen_bpf_build_bpf(&state, col); - if (rc == 0) + if (rc == 0) { + *prgm_ptr = state.bpf; state.bpf = NULL; + } _state_release(&state); - return prgm; + return rc; } /** |