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-rw-r--r--tools/bpf/bpftool/btf.c62
-rw-r--r--tools/bpf/bpftool/common.c8
-rw-r--r--tools/bpf/bpftool/feature.c26
-rw-r--r--tools/bpf/bpftool/gen.c5
-rw-r--r--tools/bpf/bpftool/link.c4
-rw-r--r--tools/bpf/bpftool/main.c6
-rw-r--r--tools/bpf/bpftool/main.h2
-rw-r--r--tools/bpf/bpftool/map.c2
-rw-r--r--tools/bpf/bpftool/perf.c112
-rw-r--r--tools/bpf/bpftool/pids.c1
-rw-r--r--tools/bpf/bpftool/prog.c4
-rw-r--r--tools/bpf/bpftool/struct_ops.c2
-rw-r--r--tools/bpf/bpftool/tracelog.c2
-rw-r--r--tools/bpf/runqslower/runqslower.c18
14 files changed, 142 insertions, 112 deletions
diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index a2c665beda87..7e6accb9d9f7 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -459,6 +459,51 @@ done:
return err;
}
+static const char sysfs_vmlinux[] = "/sys/kernel/btf/vmlinux";
+
+static struct btf *get_vmlinux_btf_from_sysfs(void)
+{
+ struct btf *base;
+
+ base = btf__parse(sysfs_vmlinux, NULL);
+ if (libbpf_get_error(base)) {
+ p_err("failed to parse vmlinux BTF at '%s': %ld\n",
+ sysfs_vmlinux, libbpf_get_error(base));
+ base = NULL;
+ }
+
+ return base;
+}
+
+#define BTF_NAME_BUFF_LEN 64
+
+static bool btf_is_kernel_module(__u32 btf_id)
+{
+ struct bpf_btf_info btf_info = {};
+ char btf_name[BTF_NAME_BUFF_LEN];
+ int btf_fd;
+ __u32 len;
+ int err;
+
+ btf_fd = bpf_btf_get_fd_by_id(btf_id);
+ if (btf_fd < 0) {
+ p_err("can't get BTF object by id (%u): %s", btf_id, strerror(errno));
+ return false;
+ }
+
+ len = sizeof(btf_info);
+ btf_info.name = ptr_to_u64(btf_name);
+ btf_info.name_len = sizeof(btf_name);
+ err = bpf_obj_get_info_by_fd(btf_fd, &btf_info, &len);
+ close(btf_fd);
+ if (err) {
+ p_err("can't get BTF (ID %u) object info: %s", btf_id, strerror(errno));
+ return false;
+ }
+
+ return btf_info.kernel_btf && strncmp(btf_name, "vmlinux", sizeof(btf_name)) != 0;
+}
+
static int do_dump(int argc, char **argv)
{
struct btf *btf = NULL, *base = NULL;
@@ -536,18 +581,11 @@ static int do_dump(int argc, char **argv)
NEXT_ARG();
} else if (is_prefix(src, "file")) {
const char sysfs_prefix[] = "/sys/kernel/btf/";
- const char sysfs_vmlinux[] = "/sys/kernel/btf/vmlinux";
if (!base_btf &&
strncmp(*argv, sysfs_prefix, sizeof(sysfs_prefix) - 1) == 0 &&
- strcmp(*argv, sysfs_vmlinux) != 0) {
- base = btf__parse(sysfs_vmlinux, NULL);
- if (libbpf_get_error(base)) {
- p_err("failed to parse vmlinux BTF at '%s': %ld\n",
- sysfs_vmlinux, libbpf_get_error(base));
- base = NULL;
- }
- }
+ strcmp(*argv, sysfs_vmlinux) != 0)
+ base = get_vmlinux_btf_from_sysfs();
btf = btf__parse_split(*argv, base ?: base_btf);
err = libbpf_get_error(btf);
@@ -591,6 +629,12 @@ static int do_dump(int argc, char **argv)
}
if (!btf) {
+ if (!base_btf && btf_is_kernel_module(btf_id)) {
+ p_info("Warning: valid base BTF was not specified with -B option, falling back to standard base BTF (%s)",
+ sysfs_vmlinux);
+ base_btf = get_vmlinux_btf_from_sysfs();
+ }
+
btf = btf__load_from_kernel_by_id_split(btf_id, base_btf);
err = libbpf_get_error(btf);
if (err) {
diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c
index 0c1e06cf50b9..c740142c24d8 100644
--- a/tools/bpf/bpftool/common.c
+++ b/tools/bpf/bpftool/common.c
@@ -17,7 +17,6 @@
#include <linux/magic.h>
#include <net/if.h>
#include <sys/mount.h>
-#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/vfs.h>
@@ -119,13 +118,6 @@ static bool is_bpffs(char *path)
return (unsigned long)st_fs.f_type == BPF_FS_MAGIC;
}
-void set_max_rlimit(void)
-{
- struct rlimit rinf = { RLIM_INFINITY, RLIM_INFINITY };
-
- setrlimit(RLIMIT_MEMLOCK, &rinf);
-}
-
static int
mnt_fs(const char *target, const char *type, char *buff, size_t bufflen)
{
diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c
index 290998c82de1..d12f46051aac 100644
--- a/tools/bpf/bpftool/feature.c
+++ b/tools/bpf/bpftool/feature.c
@@ -567,7 +567,7 @@ probe_prog_type(enum bpf_prog_type prog_type, bool *supported_types,
res = probe_prog_type_ifindex(prog_type, ifindex);
} else {
- res = libbpf_probe_bpf_prog_type(prog_type, NULL);
+ res = libbpf_probe_bpf_prog_type(prog_type, NULL) > 0;
}
#ifdef USE_LIBCAP
@@ -638,7 +638,7 @@ probe_map_type(enum bpf_map_type map_type, const char *define_prefix,
res = probe_map_type_ifindex(map_type, ifindex);
} else {
- res = libbpf_probe_bpf_map_type(map_type, NULL);
+ res = libbpf_probe_bpf_map_type(map_type, NULL) > 0;
}
/* Probe result depends on the success of map creation, no additional
@@ -690,7 +690,7 @@ probe_helper_ifindex(enum bpf_func_id id, enum bpf_prog_type prog_type,
return res;
}
-static void
+static bool
probe_helper_for_progtype(enum bpf_prog_type prog_type, bool supported_type,
const char *define_prefix, unsigned int id,
const char *ptype_name, __u32 ifindex)
@@ -701,7 +701,7 @@ probe_helper_for_progtype(enum bpf_prog_type prog_type, bool supported_type,
if (ifindex)
res = probe_helper_ifindex(id, prog_type, ifindex);
else
- res = libbpf_probe_bpf_helper(prog_type, id, NULL);
+ res = libbpf_probe_bpf_helper(prog_type, id, NULL) > 0;
#ifdef USE_LIBCAP
/* Probe may succeed even if program load fails, for
* unprivileged users check that we did not fail because of
@@ -723,6 +723,8 @@ probe_helper_for_progtype(enum bpf_prog_type prog_type, bool supported_type,
if (res)
printf("\n\t- %s", helper_name[id]);
}
+
+ return res;
}
static void
@@ -732,6 +734,7 @@ probe_helpers_for_progtype(enum bpf_prog_type prog_type, bool supported_type,
const char *ptype_name = prog_type_name[prog_type];
char feat_name[128];
unsigned int id;
+ bool probe_res = false;
if (ifindex)
/* Only test helpers for offload-able program types */
@@ -764,7 +767,7 @@ probe_helpers_for_progtype(enum bpf_prog_type prog_type, bool supported_type,
continue;
/* fallthrough */
default:
- probe_helper_for_progtype(prog_type, supported_type,
+ probe_res |= probe_helper_for_progtype(prog_type, supported_type,
define_prefix, id, ptype_name,
ifindex);
}
@@ -772,8 +775,17 @@ probe_helpers_for_progtype(enum bpf_prog_type prog_type, bool supported_type,
if (json_output)
jsonw_end_array(json_wtr);
- else if (!define_prefix)
+ else if (!define_prefix) {
printf("\n");
+ if (!probe_res) {
+ if (!supported_type)
+ printf("\tProgram type not supported\n");
+ else
+ printf("\tCould not determine which helpers are available\n");
+ }
+ }
+
+
}
static void
@@ -1136,8 +1148,6 @@ static int do_probe(int argc, char **argv)
__u32 ifindex = 0;
char *ifname;
- set_max_rlimit();
-
while (argc) {
if (is_prefix(*argv, "kernel")) {
if (target != COMPONENT_UNSPEC) {
diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index 7678af364793..4c9477ff748d 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -549,6 +549,7 @@ static void codegen_attach_detach(struct bpf_object *obj, const char *obj_name)
printf("\tint fd = skel_raw_tracepoint_open(\"%s\", prog_fd);\n", tp_name);
break;
case BPF_PROG_TYPE_TRACING:
+ case BPF_PROG_TYPE_LSM:
if (bpf_program__expected_attach_type(prog) == BPF_TRACE_ITER)
printf("\tint fd = skel_link_create(prog_fd, 0, BPF_TRACE_ITER);\n");
else
@@ -999,7 +1000,7 @@ static int do_skeleton(int argc, char **argv)
codegen("\
\n\
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ \n\
- /* THIS FILE IS AUTOGENERATED! */ \n\
+ /* THIS FILE IS AUTOGENERATED BY BPFTOOL! */ \n\
#ifndef %2$s \n\
#define %2$s \n\
\n\
@@ -1015,7 +1016,7 @@ static int do_skeleton(int argc, char **argv)
\n\
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ \n\
\n\
- /* THIS FILE IS AUTOGENERATED! */ \n\
+ /* THIS FILE IS AUTOGENERATED BY BPFTOOL! */ \n\
#ifndef %2$s \n\
#define %2$s \n\
\n\
diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c
index 97dec81950e5..6353a789322b 100644
--- a/tools/bpf/bpftool/link.c
+++ b/tools/bpf/bpftool/link.c
@@ -20,6 +20,10 @@ static const char * const link_type_name[] = {
[BPF_LINK_TYPE_CGROUP] = "cgroup",
[BPF_LINK_TYPE_ITER] = "iter",
[BPF_LINK_TYPE_NETNS] = "netns",
+ [BPF_LINK_TYPE_XDP] = "xdp",
+ [BPF_LINK_TYPE_PERF_EVENT] = "perf_event",
+ [BPF_LINK_TYPE_KPROBE_MULTI] = "kprobe_multi",
+ [BPF_LINK_TYPE_STRUCT_OPS] = "struct_ops",
};
static struct hashmap *link_table;
diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c
index e81227761f5d..9062ef2b8767 100644
--- a/tools/bpf/bpftool/main.c
+++ b/tools/bpf/bpftool/main.c
@@ -507,9 +507,9 @@ int main(int argc, char **argv)
* It will still be rejected if users use LIBBPF_STRICT_ALL
* mode for loading generated skeleton.
*/
- ret = libbpf_set_strict_mode(LIBBPF_STRICT_ALL & ~LIBBPF_STRICT_MAP_DEFINITIONS);
- if (ret)
- p_err("failed to enable libbpf strict mode: %d", ret);
+ libbpf_set_strict_mode(LIBBPF_STRICT_ALL & ~LIBBPF_STRICT_MAP_DEFINITIONS);
+ } else {
+ libbpf_set_strict_mode(LIBBPF_STRICT_AUTO_RLIMIT_MEMLOCK);
}
argc -= optind;
diff --git a/tools/bpf/bpftool/main.h b/tools/bpf/bpftool/main.h
index 6e9277ffc68c..aa99ffab451a 100644
--- a/tools/bpf/bpftool/main.h
+++ b/tools/bpf/bpftool/main.h
@@ -102,8 +102,6 @@ int detect_common_prefix(const char *arg, ...);
void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep);
void usage(void) __noreturn;
-void set_max_rlimit(void);
-
int mount_tracefs(const char *target);
struct obj_ref {
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index c26378f20831..877387ef79c7 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -1342,8 +1342,6 @@ static int do_create(int argc, char **argv)
goto exit;
}
- set_max_rlimit();
-
fd = bpf_map_create(map_type, map_name, key_size, value_size, max_entries, &attr);
if (fd < 0) {
p_err("map create failed: %s", strerror(errno));
diff --git a/tools/bpf/bpftool/perf.c b/tools/bpf/bpftool/perf.c
index 50de087b0db7..226ec2c39052 100644
--- a/tools/bpf/bpftool/perf.c
+++ b/tools/bpf/bpftool/perf.c
@@ -11,7 +11,7 @@
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
-#include <ftw.h>
+#include <dirent.h>
#include <bpf/bpf.h>
@@ -147,81 +147,83 @@ static void print_perf_plain(int pid, int fd, __u32 prog_id, __u32 fd_type,
}
}
-static int show_proc(const char *fpath, const struct stat *sb,
- int tflag, struct FTW *ftwbuf)
+static int show_proc(void)
{
+ struct dirent *proc_de, *pid_fd_de;
__u64 probe_offset, probe_addr;
__u32 len, prog_id, fd_type;
- int err, pid = 0, fd = 0;
+ DIR *proc, *pid_fd;
+ int err, pid, fd;
const char *pch;
char buf[4096];
- /* prefix always /proc */
- pch = fpath + 5;
- if (*pch == '\0')
- return 0;
+ proc = opendir("/proc");
+ if (!proc)
+ return -1;
- /* pid should be all numbers */
- pch++;
- while (isdigit(*pch)) {
- pid = pid * 10 + *pch - '0';
- pch++;
- }
- if (*pch == '\0')
- return 0;
- if (*pch != '/')
- return FTW_SKIP_SUBTREE;
-
- /* check /proc/<pid>/fd directory */
- pch++;
- if (strncmp(pch, "fd", 2))
- return FTW_SKIP_SUBTREE;
- pch += 2;
- if (*pch == '\0')
- return 0;
- if (*pch != '/')
- return FTW_SKIP_SUBTREE;
-
- /* check /proc/<pid>/fd/<fd_num> */
- pch++;
- while (isdigit(*pch)) {
- fd = fd * 10 + *pch - '0';
- pch++;
- }
- if (*pch != '\0')
- return FTW_SKIP_SUBTREE;
+ while ((proc_de = readdir(proc))) {
+ pid = 0;
+ pch = proc_de->d_name;
- /* query (pid, fd) for potential perf events */
- len = sizeof(buf);
- err = bpf_task_fd_query(pid, fd, 0, buf, &len, &prog_id, &fd_type,
- &probe_offset, &probe_addr);
- if (err < 0)
- return 0;
+ /* pid should be all numbers */
+ while (isdigit(*pch)) {
+ pid = pid * 10 + *pch - '0';
+ pch++;
+ }
+ if (*pch != '\0')
+ continue;
- if (json_output)
- print_perf_json(pid, fd, prog_id, fd_type, buf, probe_offset,
- probe_addr);
- else
- print_perf_plain(pid, fd, prog_id, fd_type, buf, probe_offset,
- probe_addr);
+ err = snprintf(buf, sizeof(buf), "/proc/%s/fd", proc_de->d_name);
+ if (err < 0 || err >= (int)sizeof(buf))
+ continue;
+
+ pid_fd = opendir(buf);
+ if (!pid_fd)
+ continue;
+ while ((pid_fd_de = readdir(pid_fd))) {
+ fd = 0;
+ pch = pid_fd_de->d_name;
+
+ /* fd should be all numbers */
+ while (isdigit(*pch)) {
+ fd = fd * 10 + *pch - '0';
+ pch++;
+ }
+ if (*pch != '\0')
+ continue;
+
+ /* query (pid, fd) for potential perf events */
+ len = sizeof(buf);
+ err = bpf_task_fd_query(pid, fd, 0, buf, &len,
+ &prog_id, &fd_type,
+ &probe_offset, &probe_addr);
+ if (err < 0)
+ continue;
+
+ if (json_output)
+ print_perf_json(pid, fd, prog_id, fd_type, buf,
+ probe_offset, probe_addr);
+ else
+ print_perf_plain(pid, fd, prog_id, fd_type, buf,
+ probe_offset, probe_addr);
+ }
+ closedir(pid_fd);
+ }
+ closedir(proc);
return 0;
}
static int do_show(int argc, char **argv)
{
- int flags = FTW_ACTIONRETVAL | FTW_PHYS;
- int err = 0, nopenfd = 16;
+ int err;
if (!has_perf_query_support())
return -1;
if (json_output)
jsonw_start_array(json_wtr);
- if (nftw("/proc", show_proc, nopenfd, flags) == -1) {
- p_err("%s", strerror(errno));
- err = -1;
- }
+ err = show_proc();
if (json_output)
jsonw_end_array(json_wtr);
diff --git a/tools/bpf/bpftool/pids.c b/tools/bpf/bpftool/pids.c
index bb6c969a114a..e2d00d3cd868 100644
--- a/tools/bpf/bpftool/pids.c
+++ b/tools/bpf/bpftool/pids.c
@@ -108,7 +108,6 @@ int build_obj_refs_table(struct hashmap **map, enum bpf_obj_type type)
p_err("failed to create hashmap for PID references");
return -1;
}
- set_max_rlimit();
skel = pid_iter_bpf__open();
if (!skel) {
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index bc4e05542c2b..5c2c63df92e8 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -68,6 +68,7 @@ const char * const prog_type_name[] = {
[BPF_PROG_TYPE_EXT] = "ext",
[BPF_PROG_TYPE_LSM] = "lsm",
[BPF_PROG_TYPE_SK_LOOKUP] = "sk_lookup",
+ [BPF_PROG_TYPE_SYSCALL] = "syscall",
};
const size_t prog_type_name_size = ARRAY_SIZE(prog_type_name);
@@ -1603,8 +1604,6 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
}
}
- set_max_rlimit();
-
if (verifier_logs)
/* log_level1 + log_level2 + stats, but not stable UAPI */
open_opts.kernel_log_level = 1 + 2 + 4;
@@ -2302,7 +2301,6 @@ static int do_profile(int argc, char **argv)
}
}
- set_max_rlimit();
err = profiler_bpf__load(profile_obj);
if (err) {
p_err("failed to load profile_obj");
diff --git a/tools/bpf/bpftool/struct_ops.c b/tools/bpf/bpftool/struct_ops.c
index e08a6ff2866c..2535f079ed67 100644
--- a/tools/bpf/bpftool/struct_ops.c
+++ b/tools/bpf/bpftool/struct_ops.c
@@ -501,8 +501,6 @@ static int do_register(int argc, char **argv)
if (libbpf_get_error(obj))
return -1;
- set_max_rlimit();
-
if (bpf_object__load(obj)) {
bpf_object__close(obj);
return -1;
diff --git a/tools/bpf/bpftool/tracelog.c b/tools/bpf/bpftool/tracelog.c
index e80a5c79b38f..bf1f02212797 100644
--- a/tools/bpf/bpftool/tracelog.c
+++ b/tools/bpf/bpftool/tracelog.c
@@ -9,7 +9,7 @@
#include <string.h>
#include <unistd.h>
#include <linux/magic.h>
-#include <sys/fcntl.h>
+#include <fcntl.h>
#include <sys/vfs.h>
#include "main.h"
diff --git a/tools/bpf/runqslower/runqslower.c b/tools/bpf/runqslower/runqslower.c
index d78f4148597f..83c5993a139a 100644
--- a/tools/bpf/runqslower/runqslower.c
+++ b/tools/bpf/runqslower/runqslower.c
@@ -4,7 +4,6 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <sys/resource.h>
#include <time.h>
#include <bpf/libbpf.h>
#include <bpf/bpf.h>
@@ -88,16 +87,6 @@ int libbpf_print_fn(enum libbpf_print_level level,
return vfprintf(stderr, format, args);
}
-static int bump_memlock_rlimit(void)
-{
- struct rlimit rlim_new = {
- .rlim_cur = RLIM_INFINITY,
- .rlim_max = RLIM_INFINITY,
- };
-
- return setrlimit(RLIMIT_MEMLOCK, &rlim_new);
-}
-
void handle_event(void *ctx, int cpu, void *data, __u32 data_sz)
{
const struct runq_event *e = data;
@@ -133,11 +122,8 @@ int main(int argc, char **argv)
libbpf_set_print(libbpf_print_fn);
- err = bump_memlock_rlimit();
- if (err) {
- fprintf(stderr, "failed to increase rlimit: %d", err);
- return 1;
- }
+ /* Use libbpf 1.0 API mode */
+ libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
obj = runqslower_bpf__open();
if (!obj) {
generated by cgit (git 2.34.1) at 2025-02-24 08:03:31 +0000