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-rw-r--r--tools/cgroup/Makefile11
-rw-r--r--tools/cgroup/cgroup_event_listener.c83
2 files changed, 0 insertions, 94 deletions
diff --git a/tools/cgroup/Makefile b/tools/cgroup/Makefile
deleted file mode 100644
index ffca068e4a..0000000000
--- a/tools/cgroup/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-# Makefile for cgroup tools
-
-CFLAGS = -Wall -Wextra
-
-all: cgroup_event_listener
-%: %.c
- $(CC) $(CFLAGS) -o $@ $^
-
-clean:
- $(RM) cgroup_event_listener
diff --git a/tools/cgroup/cgroup_event_listener.c b/tools/cgroup/cgroup_event_listener.c
deleted file mode 100644
index 3d70dc831a..0000000000
--- a/tools/cgroup/cgroup_event_listener.c
+++ /dev/null
@@ -1,83 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * cgroup_event_listener.c - Simple listener of cgroup events
- *
- * Copyright (C) Kirill A. Shutemov <kirill@shutemov.name>
- */
-
-#include <assert.h>
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <libgen.h>
-#include <limits.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <sys/eventfd.h>
-
-#define USAGE_STR "Usage: cgroup_event_listener <path-to-control-file> <args>"
-
-int main(int argc, char **argv)
-{
- int efd = -1;
- int cfd = -1;
- int event_control = -1;
- char event_control_path[PATH_MAX];
- char line[LINE_MAX];
- int ret;
-
- if (argc != 3)
- errx(1, "%s", USAGE_STR);
-
- cfd = open(argv[1], O_RDONLY);
- if (cfd == -1)
- err(1, "Cannot open %s", argv[1]);
-
- ret = snprintf(event_control_path, PATH_MAX, "%s/cgroup.event_control",
- dirname(argv[1]));
- if (ret >= PATH_MAX)
- errx(1, "Path to cgroup.event_control is too long");
-
- event_control = open(event_control_path, O_WRONLY);
- if (event_control == -1)
- err(1, "Cannot open %s", event_control_path);
-
- efd = eventfd(0, 0);
- if (efd == -1)
- err(1, "eventfd() failed");
-
- ret = snprintf(line, LINE_MAX, "%d %d %s", efd, cfd, argv[2]);
- if (ret >= LINE_MAX)
- errx(1, "Arguments string is too long");
-
- ret = write(event_control, line, strlen(line) + 1);
- if (ret == -1)
- err(1, "Cannot write to cgroup.event_control");
-
- while (1) {
- uint64_t result;
-
- ret = read(efd, &result, sizeof(result));
- if (ret == -1) {
- if (errno == EINTR)
- continue;
- err(1, "Cannot read from eventfd");
- }
- assert(ret == sizeof(result));
-
- ret = access(event_control_path, W_OK);
- if ((ret == -1) && (errno == ENOENT)) {
- puts("The cgroup seems to have removed.");
- break;
- }
-
- if (ret == -1)
- err(1, "cgroup.event_control is not accessible any more");
-
- printf("%s %s: crossed\n", argv[1], argv[2]);
- }
-
- return 0;
-}