Adding perf_data__open_dir_data to open files inside
struct perf_data path directory:
   static int perf_data__open_dir(struct perf_data *data);

Link: http://lkml.kernel.org/n/tip-sv97z5mh9j273mz2cthza...@git.kernel.org
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
 tools/perf/util/data.c | 60 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index ff1d9e5bd68d..7c37b67fbc3c 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -8,6 +8,8 @@
 #include <unistd.h>
 #include <string.h>
 #include <asm/bug.h>
+#include <sys/types.h>
+#include <dirent.h>
 
 #include "data.h"
 #include "util.h"
@@ -59,6 +61,64 @@ int perf_data__create_dir(struct perf_data *data, int nr)
        return ret;
 }
 
+__maybe_unused
+static int perf_data__open_dir(struct perf_data *data)
+{
+       struct perf_data_file *files = NULL;
+       struct dirent *dent;
+       int ret = -1;
+       DIR *dir;
+       int nr = 0;
+
+       dir = opendir(data->path);
+       if (!dir)
+               return -EINVAL;
+
+       while ((dent = readdir(dir)) != NULL) {
+               struct perf_data_file *file;
+               char path[PATH_MAX];
+               struct stat st;
+
+               snprintf(path, sizeof(path), "%s/%s", data->path, dent->d_name);
+               if (stat(path, &st))
+                       continue;
+
+               if (!S_ISREG(st.st_mode) || strncmp(dent->d_name, "data", 4))
+                       continue;
+
+               ret = -ENOMEM;
+
+               file = realloc(files, (nr + 1) * sizeof(*files));
+               if (!file)
+                       goto out_err;
+
+               files = file;
+               file = &files[nr++];
+
+               file->path = strdup(path);
+               if (!file->path)
+                       goto out_err;
+
+               ret = open(file->path, O_RDONLY);
+               if (ret < 0)
+                       goto out_err;
+
+               file->fd = ret;
+               file->size = st.st_size;
+       }
+
+       if (!files)
+               return -EINVAL;
+
+       data->dir.files = files;
+       data->dir.nr    = nr;
+       return 0;
+
+out_err:
+       free_dir(files, nr);
+       return ret;
+}
+
 static bool check_pipe(struct perf_data *data)
 {
        struct stat st;
-- 
2.17.2

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