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Subject[PATCH 07/14] perf data: Add perf_data__open_dir_data function
Date
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-sv97z5mh9j273mz2cthzaq4n@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@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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