| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20250206080952.98478-12-gmonaco@redhat.com>
Date: Thu, 6 Feb 2025 09:09:47 +0100
From: Gabriele Monaco <gmonaco@...hat.com>
To: linux-kernel@...r.kernel.org,
Steven Rostedt <rostedt@...dmis.org>,
linux-trace-kernel@...r.kernel.org
Cc: Gabriele Monaco <gmonaco@...hat.com>
Subject: [RFC PATCH 11/11] tools/rv: Allow rv list to filter for container
Add possibility to supply the container name to rv list:
# rv list sched
mon1
mon2
mon3
This lists only monitors in sched, without indentation.
Supplying -h, any option (string starting with -) or more than 1
argument will still print the usage.
Passing a non-existent container prints nothing and passing no container
continues to print all monitors, showing indentation for nested
monitors, reported after their container.
Signed-off-by: Gabriele Monaco <gmonaco@...hat.com>
---
tools/verification/rv/include/in_kernel.h | 2 +-
tools/verification/rv/src/in_kernel.c | 36 +++++++++++++++------
tools/verification/rv/src/rv.c | 38 +++++++++++++++--------
3 files changed, 53 insertions(+), 23 deletions(-)
diff --git a/tools/verification/rv/include/in_kernel.h b/tools/verification/rv/include/in_kernel.h
index 3090638c8d710..f3bfd3b9895fe 100644
--- a/tools/verification/rv/include/in_kernel.h
+++ b/tools/verification/rv/include/in_kernel.h
@@ -1,3 +1,3 @@
// SPDX-License-Identifier: GPL-2.0
-int ikm_list_monitors(void);
+int ikm_list_monitors(char *container);
int ikm_run_monitor(char *monitor, int argc, char **argv);
diff --git a/tools/verification/rv/src/in_kernel.c b/tools/verification/rv/src/in_kernel.c
index 032b851019290..c0dcee795c0de 100644
--- a/tools/verification/rv/src/in_kernel.c
+++ b/tools/verification/rv/src/in_kernel.c
@@ -180,19 +180,25 @@ static char *ikm_read_desc(char *monitor_name)
/*
* ikm_fill_monitor_definition - fill monitor's definition
*
- * Returns -1 on error, 0 otherwise.
+ * Returns -1 on error, 1 if the monitor does not belong in the container, 0 otherwise.
+ * container can be NULL
*/
-static int ikm_fill_monitor_definition(char *name, struct monitor *ikm)
+static int ikm_fill_monitor_definition(char *name, struct monitor *ikm, char *container)
{
int enabled;
char *desc, *nested_name;
nested_name = strstr(name, ":");
if (nested_name) {
+ /* it belongs in container if it starts with "container:" */
+ if (container && strstr(name, container) != name)
+ return 1;
*nested_name = '/';
++nested_name;
ikm->nested = 1;
} else {
+ if (container)
+ return 1;
nested_name = name;
ikm->nested = 0;
}
@@ -328,12 +334,12 @@ static int ikm_has_id(char *monitor_name)
*
* Returns 0 on success, -1 otherwise.
*/
-int ikm_list_monitors(void)
+int ikm_list_monitors(char *container)
{
char *available_monitors;
struct monitor ikm = {0};
char *curr, *next;
- int retval;
+ int retval, list_monitor = 0;
available_monitors = tracefs_instance_file_read(NULL, "rv/available_monitors", NULL);
@@ -347,17 +353,29 @@ int ikm_list_monitors(void)
next = strstr(curr, "\n");
*next = '\0';
- retval = ikm_fill_monitor_definition(curr, &ikm);
- if (retval)
+ retval = ikm_fill_monitor_definition(curr, &ikm, container);
+ if (retval < 0)
err_msg("ikm: error reading %d in kernel monitor, skipping\n", curr);
- printf("%s%-*s %s %s\n", ikm.nested ? " - " : "",
- ikm.nested ? MAX_DA_NAME_LEN - 3 : MAX_DA_NAME_LEN,
- ikm.name, ikm.desc, ikm.enabled ? "[ON]" : "[OFF]");
+ if (!retval) {
+ int indent = ikm.nested && !container;
+
+ list_monitor = 1;
+ printf("%s%-*s %s %s\n", indent ? " - " : "",
+ indent ? MAX_DA_NAME_LEN - 3 : MAX_DA_NAME_LEN,
+ ikm.name, ikm.desc, ikm.enabled ? "[ON]" : "[OFF]");
+ }
curr = ++next;
} while (strlen(curr));
+ if (!list_monitor) {
+ if (container)
+ printf("-- No monitor found in container %s --\n", container);
+ else
+ printf("-- No monitor found --\n");
+ }
+
free(available_monitors);
return 0;
diff --git a/tools/verification/rv/src/rv.c b/tools/verification/rv/src/rv.c
index 1ddb855328165..239de054d1e06 100644
--- a/tools/verification/rv/src/rv.c
+++ b/tools/verification/rv/src/rv.c
@@ -41,30 +41,42 @@ static void rv_list(int argc, char **argv)
{
static const char *const usage[] = {
"",
- " usage: rv list [-h]",
+ " usage: rv list [-h] [container]",
"",
" list all available monitors",
"",
" -h/--help: print this menu",
+ "",
+ " [container]: list only monitors in this container",
NULL,
};
- int i;
-
- if (argc > 1) {
+ int i, print_help = 0, retval = 0;
+ char *container = NULL;
+
+ if (argc == 2) {
+ if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
+ print_help = 1;
+ retval = 0;
+ } else if (argv[1][0] == '-') {
+ /* assume invalid option */
+ print_help = 1;
+ retval = 1;
+ } else
+ container = argv[1];
+ } else if (argc > 2) {
+ /* more than 2 is always usage */
+ print_help = 1;
+ retval = 1;
+ }
+ if (print_help) {
fprintf(stderr, "rv version %s\n", VERSION);
-
- /* more than 1 is always usage */
for (i = 0; usage[i]; i++)
fprintf(stderr, "%s\n", usage[i]);
-
- /* but only -h is valid */
- if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
- exit(0);
- else
- exit(1);
+ exit(retval);
}
- ikm_list_monitors();
+ ikm_list_monitors(container);
+
exit(0);
}
--
2.48.1
Powered by blists - more mailing lists