^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #define _GNU_SOURCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <ftw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <libgen.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <mntent.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <stdbool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/limits.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/magic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <net/if.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <sys/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <sys/resource.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <sys/vfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <bpf/bpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <bpf/libbpf.h> /* libbpf_num_possible_cpus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "main.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #ifndef BPF_FS_MAGIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define BPF_FS_MAGIC 0xcafe4a11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) const char * const attach_type_name[__MAX_BPF_ATTACH_TYPE] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) [BPF_CGROUP_INET_INGRESS] = "ingress",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) [BPF_CGROUP_INET_EGRESS] = "egress",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) [BPF_CGROUP_INET_SOCK_CREATE] = "sock_create",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) [BPF_CGROUP_INET_SOCK_RELEASE] = "sock_release",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) [BPF_CGROUP_SOCK_OPS] = "sock_ops",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) [BPF_CGROUP_DEVICE] = "device",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) [BPF_CGROUP_INET4_BIND] = "bind4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) [BPF_CGROUP_INET6_BIND] = "bind6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) [BPF_CGROUP_INET4_CONNECT] = "connect4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) [BPF_CGROUP_INET6_CONNECT] = "connect6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) [BPF_CGROUP_INET4_POST_BIND] = "post_bind4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) [BPF_CGROUP_INET6_POST_BIND] = "post_bind6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) [BPF_CGROUP_INET4_GETPEERNAME] = "getpeername4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) [BPF_CGROUP_INET6_GETPEERNAME] = "getpeername6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) [BPF_CGROUP_INET4_GETSOCKNAME] = "getsockname4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) [BPF_CGROUP_INET6_GETSOCKNAME] = "getsockname6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) [BPF_CGROUP_UDP4_SENDMSG] = "sendmsg4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) [BPF_CGROUP_UDP6_SENDMSG] = "sendmsg6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) [BPF_CGROUP_SYSCTL] = "sysctl",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) [BPF_CGROUP_UDP4_RECVMSG] = "recvmsg4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) [BPF_CGROUP_UDP6_RECVMSG] = "recvmsg6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) [BPF_CGROUP_GETSOCKOPT] = "getsockopt",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) [BPF_CGROUP_SETSOCKOPT] = "setsockopt",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) [BPF_SK_SKB_STREAM_PARSER] = "sk_skb_stream_parser",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) [BPF_SK_SKB_STREAM_VERDICT] = "sk_skb_stream_verdict",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) [BPF_SK_MSG_VERDICT] = "sk_msg_verdict",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) [BPF_LIRC_MODE2] = "lirc_mode2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) [BPF_FLOW_DISSECTOR] = "flow_dissector",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) [BPF_TRACE_RAW_TP] = "raw_tp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) [BPF_TRACE_FENTRY] = "fentry",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) [BPF_TRACE_FEXIT] = "fexit",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) [BPF_MODIFY_RETURN] = "mod_ret",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) [BPF_LSM_MAC] = "lsm_mac",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) [BPF_SK_LOOKUP] = "sk_lookup",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) void p_err(const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) va_list ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) va_start(ap, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) jsonw_start_object(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) jsonw_name(json_wtr, "error");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) jsonw_vprintf_enquote(json_wtr, fmt, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) jsonw_end_object(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) fprintf(stderr, "Error: ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) vfprintf(stderr, fmt, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) fprintf(stderr, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) va_end(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) void p_info(const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) va_list ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) va_start(ap, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) vfprintf(stderr, fmt, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) fprintf(stderr, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) va_end(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static bool is_bpffs(char *path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct statfs st_fs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (statfs(path, &st_fs) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return (unsigned long)st_fs.f_type == BPF_FS_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) void set_max_rlimit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct rlimit rinf = { RLIM_INFINITY, RLIM_INFINITY };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) setrlimit(RLIMIT_MEMLOCK, &rinf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) mnt_fs(const char *target, const char *type, char *buff, size_t bufflen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) bool bind_done = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) while (mount("", target, "none", MS_PRIVATE | MS_REC, NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (errno != EINVAL || bind_done) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) snprintf(buff, bufflen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) "mount --make-private %s failed: %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) target, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (mount(target, target, "none", MS_BIND, NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) snprintf(buff, bufflen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) "mount --bind %s %s failed: %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) target, target, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) bind_done = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (mount(type, target, type, 0, "mode=0700")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) snprintf(buff, bufflen, "mount -t %s %s %s failed: %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) type, type, target, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) int mount_tracefs(const char *target)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) char err_str[ERR_MAX_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) err = mnt_fs(target, "tracefs", err_str, ERR_MAX_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) err_str[ERR_MAX_LEN - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) p_err("can't mount tracefs: %s", err_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int open_obj_pinned(const char *path, bool quiet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) char *pname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) int fd = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) pname = strdup(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (!pname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (!quiet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) p_err("mem alloc failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) goto out_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) fd = bpf_obj_get(pname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (!quiet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) p_err("bpf obj get (%s): %s", pname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) errno == EACCES && !is_bpffs(dirname(pname)) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) "directory not in bpf file system (bpffs)" :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) free(pname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) out_ret:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) int open_obj_pinned_any(const char *path, enum bpf_obj_type exp_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) enum bpf_obj_type type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) fd = open_obj_pinned(path, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) type = get_fd_type(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (type < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (type != exp_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) p_err("incorrect object type: %s", get_fd_type_name(type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) int mount_bpffs_for_pin(const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) char err_str[ERR_MAX_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) char *file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) char *dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) file = malloc(strlen(name) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (!file) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) p_err("mem alloc failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) strcpy(file, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) dir = dirname(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (is_bpffs(dir))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /* nothing to do if already mounted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (block_mount) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) p_err("no BPF file system found, not mounting it due to --nomount option");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) err = mnt_fs(dir, "bpf", err_str, ERR_MAX_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) err_str[ERR_MAX_LEN - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) p_err("can't mount BPF file system to pin the object (%s): %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) name, err_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) free(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) int do_pin_fd(int fd, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) err = mount_bpffs_for_pin(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) err = bpf_obj_pin(fd, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) p_err("can't pin the object (%s): %s", name, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) int do_pin_any(int argc, char **argv, int (*get_fd)(int *, char ***))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) fd = get_fd(&argc, &argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) err = do_pin_fd(fd, *argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) const char *get_fd_type_name(enum bpf_obj_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static const char * const names[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) [BPF_OBJ_UNKNOWN] = "unknown",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) [BPF_OBJ_PROG] = "prog",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) [BPF_OBJ_MAP] = "map",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (type < 0 || type >= ARRAY_SIZE(names) || !names[type])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) return names[BPF_OBJ_UNKNOWN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return names[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) int get_fd_type(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) char path[PATH_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) char buf[512];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) ssize_t n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) snprintf(path, sizeof(path), "/proc/self/fd/%d", fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) n = readlink(path, buf, sizeof(buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (n < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) p_err("can't read link type: %s", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (n == sizeof(path)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) p_err("can't read link type: path too long!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (strstr(buf, "bpf-map"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return BPF_OBJ_MAP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) else if (strstr(buf, "bpf-prog"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return BPF_OBJ_PROG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) else if (strstr(buf, "bpf-link"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) return BPF_OBJ_LINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return BPF_OBJ_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) char *get_fdinfo(int fd, const char *key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) char path[PATH_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) char *line = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) size_t line_n = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) ssize_t n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) FILE *fdi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) snprintf(path, sizeof(path), "/proc/self/fdinfo/%d", fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) fdi = fopen(path, "r");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (!fdi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) while ((n = getline(&line, &line_n, fdi)) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) char *value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (!strstr(line, key))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) fclose(fdi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) value = strchr(line, '\t');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (!value || !value[1]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) free(line);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) value++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) len = strlen(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) memmove(line, value, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) line[len - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) return line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) free(line);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) fclose(fdi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) void print_data_json(uint8_t *data, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) jsonw_start_array(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) for (i = 0; i < len; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) jsonw_printf(json_wtr, "%d", data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) jsonw_end_array(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) void print_hex_data_json(uint8_t *data, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) jsonw_start_array(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) for (i = 0; i < len; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) jsonw_printf(json_wtr, "\"0x%02hhx\"", data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) jsonw_end_array(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) /* extra params for nftw cb */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) static struct pinned_obj_table *build_fn_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) static enum bpf_obj_type build_fn_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) static int do_build_table_cb(const char *fpath, const struct stat *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) int typeflag, struct FTW *ftwbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) struct bpf_prog_info pinned_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) __u32 len = sizeof(pinned_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct pinned_obj *obj_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) enum bpf_obj_type objtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) int fd, err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (typeflag != FTW_F)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) goto out_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) fd = open_obj_pinned(fpath, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) goto out_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) objtype = get_fd_type(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (objtype != build_fn_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) goto out_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) memset(&pinned_info, 0, sizeof(pinned_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (bpf_obj_get_info_by_fd(fd, &pinned_info, &len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) goto out_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) obj_node = calloc(1, sizeof(*obj_node));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (!obj_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) goto out_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) obj_node->id = pinned_info.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) obj_node->path = strdup(fpath);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (!obj_node->path) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) free(obj_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) goto out_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) hash_add(build_fn_table->table, &obj_node->hash, obj_node->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) out_close:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) out_ret:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) int build_pinned_obj_table(struct pinned_obj_table *tab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) enum bpf_obj_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) struct mntent *mntent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) FILE *mntfile = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) int flags = FTW_PHYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) int nopenfd = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) mntfile = setmntent("/proc/mounts", "r");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (!mntfile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) build_fn_table = tab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) build_fn_type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) while ((mntent = getmntent(mntfile))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) char *path = mntent->mnt_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (strncmp(mntent->mnt_type, "bpf", 3) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) err = nftw(path, do_build_table_cb, nopenfd, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) fclose(mntfile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) void delete_pinned_obj_table(struct pinned_obj_table *tab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) struct pinned_obj *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) struct hlist_node *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) unsigned int bkt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) hash_for_each_safe(tab->table, bkt, tmp, obj, hash) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) hash_del(&obj->hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) free(obj->path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) free(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) unsigned int get_page_size(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) static int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (!result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) result = getpagesize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) unsigned int get_possible_cpus(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) int cpus = libbpf_num_possible_cpus();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) if (cpus < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) p_err("Can't get # of possible cpus: %s", strerror(-cpus));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) exit(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) return cpus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) static char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) ifindex_to_name_ns(__u32 ifindex, __u32 ns_dev, __u32 ns_ino, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct stat st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) err = stat("/proc/self/ns/net", &st);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) p_err("Can't stat /proc/self: %s", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) if (st.st_dev != ns_dev || st.st_ino != ns_ino)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) return if_indextoname(ifindex, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) static int read_sysfs_hex_int(char *path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) char vendor_id_buf[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) fd = open(path, O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) p_err("Can't open %s: %s", path, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) len = read(fd, vendor_id_buf, sizeof(vendor_id_buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (len < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) p_err("Can't read %s: %s", path, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) if (len >= (int)sizeof(vendor_id_buf)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) p_err("Value in %s too long", path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) vendor_id_buf[len] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) return strtol(vendor_id_buf, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) static int read_sysfs_netdev_hex_int(char *devname, const char *entry_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) char full_path[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) snprintf(full_path, sizeof(full_path), "/sys/class/net/%s/device/%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) devname, entry_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) return read_sysfs_hex_int(full_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) const char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) ifindex_to_bfd_params(__u32 ifindex, __u64 ns_dev, __u64 ns_ino,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) const char **opt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) char devname[IF_NAMESIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) int vendor_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) int device_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) if (!ifindex_to_name_ns(ifindex, ns_dev, ns_ino, devname)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) p_err("Can't get net device name for ifindex %d: %s", ifindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) vendor_id = read_sysfs_netdev_hex_int(devname, "vendor");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) if (vendor_id < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) p_err("Can't get device vendor id for %s", devname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) switch (vendor_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) case 0x19ee:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) device_id = read_sysfs_netdev_hex_int(devname, "device");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) if (device_id != 0x4000 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) device_id != 0x6000 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) device_id != 0x6003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) p_info("Unknown NFP device ID, assuming it is NFP-6xxx arch");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) *opt = "ctx4";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) return "NFP-6xxx";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) p_err("Can't get bfd arch name for device vendor id 0x%04x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) vendor_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) void print_dev_plain(__u32 ifindex, __u64 ns_dev, __u64 ns_inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) char name[IF_NAMESIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (!ifindex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) printf(" offloaded_to ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) if (ifindex_to_name_ns(ifindex, ns_dev, ns_inode, name))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) printf("%s", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) printf("ifindex %u ns_dev %llu ns_ino %llu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) ifindex, ns_dev, ns_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) void print_dev_json(__u32 ifindex, __u64 ns_dev, __u64 ns_inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) char name[IF_NAMESIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (!ifindex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) jsonw_name(json_wtr, "dev");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) jsonw_start_object(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) jsonw_uint_field(json_wtr, "ifindex", ifindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) jsonw_uint_field(json_wtr, "ns_dev", ns_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) jsonw_uint_field(json_wtr, "ns_inode", ns_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) if (ifindex_to_name_ns(ifindex, ns_dev, ns_inode, name))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) jsonw_string_field(json_wtr, "ifname", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) jsonw_end_object(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) int parse_u32_arg(int *argc, char ***argv, __u32 *val, const char *what)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) char *endptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) if (*val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) p_err("%s already specified", what);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) *val = strtoul(**argv, &endptr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) if (*endptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) p_err("can't parse %s as %s", **argv, what);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) int __printf(2, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) print_all_levels(__maybe_unused enum libbpf_print_level level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) const char *format, va_list args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) return vfprintf(stderr, format, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) static int prog_fd_by_nametag(void *nametag, int **fds, bool tag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) unsigned int id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) int fd, nb_fds = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) void *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) while (true) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) struct bpf_prog_info info = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) __u32 len = sizeof(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) err = bpf_prog_get_next_id(id, &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) if (errno != ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) p_err("%s", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) goto err_close_fds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) return nb_fds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) fd = bpf_prog_get_fd_by_id(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) p_err("can't get prog by id (%u): %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) id, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) goto err_close_fds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) err = bpf_obj_get_info_by_fd(fd, &info, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) p_err("can't get prog info (%u): %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) id, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) goto err_close_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) if ((tag && memcmp(nametag, info.tag, BPF_TAG_SIZE)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) (!tag && strncmp(nametag, info.name, BPF_OBJ_NAME_LEN))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) if (nb_fds > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) tmp = realloc(*fds, (nb_fds + 1) * sizeof(int));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (!tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) p_err("failed to realloc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) goto err_close_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) *fds = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) (*fds)[nb_fds++] = fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) err_close_fd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) err_close_fds:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) while (--nb_fds >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) close((*fds)[nb_fds]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) int prog_parse_fds(int *argc, char ***argv, int **fds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) if (is_prefix(**argv, "id")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) char *endptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) id = strtoul(**argv, &endptr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) if (*endptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) p_err("can't parse %s as ID", **argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) (*fds)[0] = bpf_prog_get_fd_by_id(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) if ((*fds)[0] < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) p_err("get by id (%u): %s", id, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) } else if (is_prefix(**argv, "tag")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) unsigned char tag[BPF_TAG_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) if (sscanf(**argv, BPF_TAG_FMT, tag, tag + 1, tag + 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) tag + 3, tag + 4, tag + 5, tag + 6, tag + 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) != BPF_TAG_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) p_err("can't parse tag");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) return prog_fd_by_nametag(tag, fds, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) } else if (is_prefix(**argv, "name")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) name = **argv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) if (strlen(name) > BPF_OBJ_NAME_LEN - 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) p_err("can't parse name");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) return prog_fd_by_nametag(name, fds, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) } else if (is_prefix(**argv, "pinned")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) char *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) path = **argv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) (*fds)[0] = open_obj_pinned_any(path, BPF_OBJ_PROG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) if ((*fds)[0] < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) p_err("expected 'id', 'tag', 'name' or 'pinned', got: '%s'?", **argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) int prog_parse_fd(int *argc, char ***argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) int *fds = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) int nb_fds, fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) fds = malloc(sizeof(int));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) if (!fds) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) p_err("mem alloc failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) nb_fds = prog_parse_fds(argc, argv, &fds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) if (nb_fds != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) if (nb_fds > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) p_err("several programs match this handle");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) while (nb_fds--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) close(fds[nb_fds]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) fd = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) goto exit_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) fd = fds[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) exit_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) free(fds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) static int map_fd_by_name(char *name, int **fds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) unsigned int id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) int fd, nb_fds = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) void *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) while (true) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) struct bpf_map_info info = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) __u32 len = sizeof(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) err = bpf_map_get_next_id(id, &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) if (errno != ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) p_err("%s", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) goto err_close_fds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) return nb_fds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) fd = bpf_map_get_fd_by_id(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) p_err("can't get map by id (%u): %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) id, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) goto err_close_fds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) err = bpf_obj_get_info_by_fd(fd, &info, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) p_err("can't get map info (%u): %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) id, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) goto err_close_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) if (strncmp(name, info.name, BPF_OBJ_NAME_LEN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) if (nb_fds > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) tmp = realloc(*fds, (nb_fds + 1) * sizeof(int));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) if (!tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) p_err("failed to realloc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) goto err_close_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) *fds = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) (*fds)[nb_fds++] = fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) err_close_fd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) err_close_fds:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) while (--nb_fds >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) close((*fds)[nb_fds]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) int map_parse_fds(int *argc, char ***argv, int **fds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) if (is_prefix(**argv, "id")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) char *endptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) id = strtoul(**argv, &endptr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) if (*endptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) p_err("can't parse %s as ID", **argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) (*fds)[0] = bpf_map_get_fd_by_id(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) if ((*fds)[0] < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) p_err("get map by id (%u): %s", id, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) } else if (is_prefix(**argv, "name")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) name = **argv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) if (strlen(name) > BPF_OBJ_NAME_LEN - 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) p_err("can't parse name");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) return map_fd_by_name(name, fds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) } else if (is_prefix(**argv, "pinned")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) char *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) path = **argv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) (*fds)[0] = open_obj_pinned_any(path, BPF_OBJ_MAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) if ((*fds)[0] < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) p_err("expected 'id', 'name' or 'pinned', got: '%s'?", **argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) int map_parse_fd(int *argc, char ***argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) int *fds = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) int nb_fds, fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) fds = malloc(sizeof(int));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) if (!fds) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) p_err("mem alloc failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) nb_fds = map_parse_fds(argc, argv, &fds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) if (nb_fds != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) if (nb_fds > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) p_err("several maps match this handle");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) while (nb_fds--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) close(fds[nb_fds]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) fd = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) goto exit_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) fd = fds[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) exit_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) free(fds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) int map_parse_fd_and_info(int *argc, char ***argv, void *info, __u32 *info_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) fd = map_parse_fd(argc, argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) err = bpf_obj_get_info_by_fd(fd, info, info_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) p_err("can't get map info: %s", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags