If perf.data file is owned by some user,
it can't be read even if current user is root.
A 'st_uid' from fstat() is user ID of the file owner.
Therefore use getuid() instead of st_uid to check if
user of the calling 'perf' process is root or not.
Signed-off-by: Taeung Song <treeze.tae...@gmail.com>
---
tools/perf/util/data.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index 1921942..91ebe4e 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -67,7 +67,7 @@ static int open_file_read(struct perf_data_file *file)
if (fstat(fd, &st) < 0)
goto out_close;
- if (!file->force && st.st_uid && (st.st_uid != geteuid())) {
+ if (!file->force && getuid() && (st.st_uid != geteuid())) {
pr_err("File %s not owned by current user or root (use -f to
override)\n",
file->path);
goto out_close;
--
1.9.1
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