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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:12 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:12 +0000 |
commit | 8665bd53f2f2e27e5511d90428cb3f60e6d0ce15 (patch) | |
tree | 8d58900dc0ebd4a3011f92c128d2fe45bc7c4bf2 /tools/cgroup | |
parent | Adding debian version 6.7.12-1. (diff) | |
download | linux-8665bd53f2f2e27e5511d90428cb3f60e6d0ce15.tar.xz linux-8665bd53f2f2e27e5511d90428cb3f60e6d0ce15.zip |
Merging upstream version 6.8.9.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/cgroup')
-rw-r--r-- | tools/cgroup/Makefile | 11 | ||||
-rw-r--r-- | tools/cgroup/cgroup_event_listener.c | 83 |
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; -} |