diff options
Diffstat (limited to 'tools/perf/util/bpf-loader.c')
| -rw-r--r-- | tools/perf/util/bpf-loader.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c index 0c5d174245bb..c46256b1f5fd 100644 --- a/tools/perf/util/bpf-loader.c +++ b/tools/perf/util/bpf-loader.c @@ -59,9 +59,9 @@ struct bpf_object *bpf__prepare_load(const char *filename, bool source) } else obj = bpf_object__open(filename); - if (!obj) { + if (IS_ERR(obj)) { pr_debug("bpf: failed to load %s\n", filename); - return ERR_PTR(-EINVAL); + return obj; } return obj; @@ -96,9 +96,9 @@ config_bpf_program(struct bpf_program *prog) int err; config_str = bpf_program__title(prog, false); - if (!config_str) { + if (IS_ERR(config_str)) { pr_debug("bpf: unable to get title for program\n"); - return -EINVAL; + return PTR_ERR(config_str); } priv = calloc(sizeof(*priv), 1); @@ -308,13 +308,34 @@ int bpf__foreach_tev(struct bpf_object *obj, return 0; } +static int +bpf_loader_strerror(int err, char *buf, size_t size) +{ + char sbuf[STRERR_BUFSIZE]; + const char *msg; + + if (!buf || !size) + return -1; + + err = err > 0 ? err : -err; + + if (err >= __LIBBPF_ERRNO__START) + return libbpf_strerror(err, buf, size); + + msg = strerror_r(err, sbuf, sizeof(sbuf)); + snprintf(buf, size, "%s", msg); + buf[size - 1] = '\0'; + return 0; +} + #define bpf__strerror_head(err, buf, size) \ char sbuf[STRERR_BUFSIZE], *emsg;\ if (!size)\ return 0;\ if (err < 0)\ err = -err;\ - emsg = strerror_r(err, sbuf, sizeof(sbuf));\ + bpf_loader_strerror(err, sbuf, sizeof(sbuf));\ + emsg = sbuf;\ switch (err) {\ default:\ scnprintf(buf, size, "%s", emsg);\ @@ -345,8 +366,6 @@ int bpf__strerror_load(struct bpf_object *obj __maybe_unused, int err, char *buf, size_t size) { bpf__strerror_head(err, buf, size); - bpf__strerror_entry(EINVAL, "%s: Are you root and runing a CONFIG_BPF_SYSCALL kernel?", - emsg) bpf__strerror_end(buf, size); return 0; } |