diff options
Diffstat (limited to '')
-rw-r--r-- | tools/perf/util/data.c | 54 |
1 files changed, 48 insertions, 6 deletions
diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c index f5d260b1df4d..a7f68c309545 100644 --- a/tools/perf/util/data.c +++ b/tools/perf/util/data.c @@ -3,6 +3,7 @@ #include <linux/kernel.h> #include <linux/string.h> #include <linux/zalloc.h> +#include <linux/err.h> #include <sys/types.h> #include <sys/stat.h> #include <errno.h> @@ -44,24 +45,27 @@ int perf_data__create_dir(struct perf_data *data, int nr) if (!files) return -ENOMEM; - data->dir.version = PERF_DIR_VERSION; - data->dir.files = files; - data->dir.nr = nr; - for (i = 0; i < nr; i++) { struct perf_data_file *file = &files[i]; ret = asprintf(&file->path, "%s/data.%d", data->path, i); - if (ret < 0) + if (ret < 0) { + ret = -ENOMEM; goto out_err; + } ret = open(file->path, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR); - if (ret < 0) + if (ret < 0) { + ret = -errno; goto out_err; + } file->fd = ret; } + data->dir.version = PERF_DIR_VERSION; + data->dir.files = files; + data->dir.nr = nr; return 0; out_err: @@ -476,6 +480,25 @@ int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz) return mkdir(buf, S_IRWXU); } +bool has_kcore_dir(const char *path) +{ + struct dirent *d = ERR_PTR(-EINVAL); + const char *name = "kcore_dir"; + DIR *dir = opendir(path); + size_t n = strlen(name); + bool result = false; + + if (dir) { + while (d && !result) { + d = readdir(dir); + result = d ? strncmp(d->d_name, name, n) : false; + } + closedir(dir); + } + + return result; +} + char *perf_data__kallsyms_name(struct perf_data *data) { char *kallsyms_name; @@ -495,6 +518,25 @@ char *perf_data__kallsyms_name(struct perf_data *data) return kallsyms_name; } +char *perf_data__guest_kallsyms_name(struct perf_data *data, pid_t machine_pid) +{ + char *kallsyms_name; + struct stat st; + + if (!data->is_dir) + return NULL; + + if (asprintf(&kallsyms_name, "%s/kcore_dir__%d/kallsyms", data->path, machine_pid) < 0) + return NULL; + + if (stat(kallsyms_name, &st)) { + free(kallsyms_name); + return NULL; + } + + return kallsyms_name; +} + bool is_perf_data(const char *path) { bool ret = false; |