Date: Wed, 23 Oct 2024 07:24:31 GMT From: Baptiste Daroussin <bapt@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 379b9c6e7c68 - stable/14 - genl: add parser for nlsysevent Message-ID: <202410230724.49N7OVId036446@gitrepo.freebsd.org>
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The branch stable/14 has been updated by bapt: URL: https://cgit.FreeBSD.org/src/commit/?id=379b9c6e7c680d14fac511ad7d5f54ea95c35681 commit 379b9c6e7c680d14fac511ad7d5f54ea95c35681 Author: Baptiste Daroussin <bapt@FreeBSD.org> AuthorDate: 2024-10-07 09:43:50 +0000 Commit: Baptiste Daroussin <bapt@FreeBSD.org> CommitDate: 2024-10-23 07:24:09 +0000 genl: add parser for nlsysevent genl monitor nlsysevent is now able to print the messages received (cherry picked from commit 883722891aa92fc6033020c67ec7f2f0d9fedf95) --- usr.bin/genl/genl.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/usr.bin/genl/genl.c b/usr.bin/genl/genl.c index 88880c4bacbd..48c74fa20c81 100644 --- a/usr.bin/genl/genl.c +++ b/usr.bin/genl/genl.c @@ -40,10 +40,12 @@ #include <netlink/netlink_generic.h> #include <netlink/netlink_snl.h> #include <netlink/netlink_snl_generic.h> +#include <netlink/netlink_sysevent.h> static int monitor_mcast(int argc, char **argv); static int list_families(int argc, char **argv); static void parser_nlctrl_notify(struct snl_state *ss, struct nlmsghdr *hdr); +static void parser_nlsysevent(struct snl_state *ss, struct nlmsghdr *hdr); static void parser_fallback(struct snl_state *ss, struct nlmsghdr *hdr); static struct commands { @@ -60,8 +62,25 @@ static struct mcast_parsers { void (*parser)(struct snl_state *ss, struct nlmsghdr *hdr); } mcast_parsers [] = { { "nlctrl", parser_nlctrl_notify }, + { "nlsysevent", parser_nlsysevent }, }; +struct nlevent { + const char *name; + const char *subsystem; + const char *type; + const char *data; +}; +#define _OUT(_field) offsetof(struct nlevent, _field) +static struct snl_attr_parser ap_nlevent_get[] = { + { .type = NLSE_ATTR_SYSTEM, .off = _OUT(name), .cb = snl_attr_get_string }, + { .type = NLSE_ATTR_SUBSYSTEM, .off = _OUT(subsystem), .cb = snl_attr_get_string }, + { .type = NLSE_ATTR_TYPE, .off = _OUT(type), .cb = snl_attr_get_string }, + { .type = NLSE_ATTR_DATA, .off = _OUT(data), .cb = snl_attr_get_string }, +}; +#undef _OUT +SNL_DECLARE_GENL_PARSER(nlevent_get_parser, ap_nlevent_get); + struct genl_ctrl_op { uint32_t id; uint32_t flags; @@ -183,6 +202,20 @@ parser_nlctrl_notify(struct snl_state *ss, struct nlmsghdr *hdr) dump_family(&family); } +void +parser_nlsysevent(struct snl_state *ss, struct nlmsghdr *hdr) +{ + struct nlevent ne = {}; + if (snl_parse_nlmsg(ss, hdr, &nlevent_get_parser, &ne)) { + printf("system=%s subsystem=%s type=%s", ne.name, ne.subsystem, ne.type); + if (ne.data) { + printf(" %s", ne.data); + if (ne.data[strlen(ne.data) -1] != '\n') + printf("\n"); + } + } +} + void parser_fallback(struct snl_state *ss __unused, struct nlmsghdr *hdr __unused) { @@ -209,6 +242,7 @@ monitor_mcast(int argc __unused, char **argv) usage(); return (EXIT_FAILURE); } + if (!snl_get_genl_family_info(&ss, argv[0], &attrs)) errx(EXIT_FAILURE, "Unknown family '%s'", argv[0]); if (argc == 1)
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