linux-kernel - [tip:perf/core] perf tools: Add depth checking to rm

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Date:   Thu, 28 Feb 2019 00:00:11 -0800
From:   tip-bot for Jiri Olsa <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     adrian.hunter@...el.com, ak@...ux.intel.com,
        linux-kernel@...r.kernel.org, tglx@...utronix.de,
        alexander.shishkin@...ux.intel.com, eranian@...gle.com,
        alexey.budankov@...ux.intel.com, mingo@...nel.org,
        peterz@...radead.org, jolsa@...nel.org, namhyung@...nel.org,
        hpa@...or.com, acme@...hat.com
Subject: [tip:perf/core] perf tools: Add depth checking to rm_rf

Commit-ID:  05a486593977bfcf71de6bf5cad6d045c18829c6
Gitweb:     https://git.kernel.org/tip/05a486593977bfcf71de6bf5cad6d045c18829c6
Author:     Jiri Olsa <jolsa@...nel.org>
AuthorDate: Sun, 24 Feb 2019 20:06:37 +0100
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 25 Feb 2019 10:32:11 -0300

perf tools: Add depth checking to rm_rf

Adding depth argument to rm_rf (and renaming it to rm_rf_depth) to
specify the depth we will go searching for files to remove.

It will be used to specify single depth for perf.data directory removal
in following patch.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Alexey Budankov <alexey.budankov@...ux.intel.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/r/20190224190656.30163-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/util.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 3ee410fc047a..bcf436892155 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -117,7 +117,12 @@ int mkdir_p(char *path, mode_t mode)
 	return (stat(path, &st) && mkdir(path, mode)) ? -1 : 0;
 }
 
-int rm_rf(const char *path)
+/*
+ * The depth specify how deep the removal will go.
+ * 0       - will remove only files under the 'path' directory
+ * 1 .. x  - will dive in x-level deep under the 'path' directory
+ */
+static int rm_rf_depth(const char *path, int depth)
 {
 	DIR *dir;
 	int ret;
@@ -155,7 +160,7 @@ int rm_rf(const char *path)
 		}
 
 		if (S_ISDIR(statbuf.st_mode))
-			ret = rm_rf(namebuf);
+			ret = depth ? rm_rf_depth(namebuf, depth - 1) : 0;
 		else
 			ret = unlink(namebuf);
 	}
@@ -167,6 +172,11 @@ int rm_rf(const char *path)
 	return rmdir(path);
 }
 
+int rm_rf(const char *path)
+{
+	return rm_rf_depth(path, INT_MAX);
+}
+
 /* A filter which removes dot files */
 bool lsdir_no_dot_filter(const char *name __maybe_unused, struct dirent *d)
 {