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Date:: Sat Jan 29 11:05:06 2022 UTC
Message:: add kamictl debug: list open fids on every ongoing connection while here also fix the imsg retrival loop
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  1 fb1a36c0 2022-01-09 op /*
  2 fb1a36c0 2022-01-09 op  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
  3 fb1a36c0 2022-01-09 op  *
  4 fb1a36c0 2022-01-09 op  * Permission to use, copy, modify, and distribute this software for any
  5 fb1a36c0 2022-01-09 op  * purpose with or without fee is hereby granted, provided that the above
  6 fb1a36c0 2022-01-09 op  * copyright notice and this permission notice appear in all copies.
  7 fb1a36c0 2022-01-09 op  *
  8 fb1a36c0 2022-01-09 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 fb1a36c0 2022-01-09 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 fb1a36c0 2022-01-09 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 fb1a36c0 2022-01-09 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 fb1a36c0 2022-01-09 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 fb1a36c0 2022-01-09 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 fb1a36c0 2022-01-09 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 fb1a36c0 2022-01-09 op  */
 16 fb1a36c0 2022-01-09 op 
 17 bbcba3ed 2022-01-10 op #include "compat.h"
 18 bbcba3ed 2022-01-10 op 
 19 fb1a36c0 2022-01-09 op #include <sys/types.h>
 20 fb1a36c0 2022-01-09 op #include <sys/socket.h>
 21 fb1a36c0 2022-01-09 op #include <sys/uio.h>
 22 fb1a36c0 2022-01-09 op #include <sys/un.h>
 23 fb1a36c0 2022-01-09 op 
 24 4fa9a307 2022-01-29 op #include <errno.h>
 25 4fa9a307 2022-01-29 op #include <inttypes.h>
 26 fb1a36c0 2022-01-09 op #include <stdint.h>
 27 fb1a36c0 2022-01-09 op #include <stdio.h>
 28 fb1a36c0 2022-01-09 op #include <stdlib.h>
 29 fb1a36c0 2022-01-09 op #include <string.h>
 30 fb1a36c0 2022-01-09 op #include <syslog.h>
 31 fb1a36c0 2022-01-09 op #include <unistd.h>
 32 fb1a36c0 2022-01-09 op 
 33 fb1a36c0 2022-01-09 op #include "ctl_parser.h"
 34 fb1a36c0 2022-01-09 op #include "kamid.h"
 35 fb1a36c0 2022-01-09 op #include "log.h"
 36 fb1a36c0 2022-01-09 op 
 37 fb1a36c0 2022-01-09 op __dead void	 usage(void);
 38 fb1a36c0 2022-01-09 op 
 39 fb1a36c0 2022-01-09 op struct imsgbuf	*ibuf;
 40 fb1a36c0 2022-01-09 op 
 41 fb1a36c0 2022-01-09 op __dead void
 42 fb1a36c0 2022-01-09 op usage(void)
 43 fb1a36c0 2022-01-09 op {
 44 fb1a36c0 2022-01-09 op 	/*
 45 fb1a36c0 2022-01-09 op 	 * XXX: this will print `kamid' if compat/getprogname.c is
 46 fb1a36c0 2022-01-09 op 	 * used.
 47 fb1a36c0 2022-01-09 op 	 */
 48 fb1a36c0 2022-01-09 op 	fprintf(stderr, "usage: %s [-s socket] command [argument ...]\n",
 49 fb1a36c0 2022-01-09 op 	    getprogname());
 50 fb1a36c0 2022-01-09 op 	exit(1);
 51 fb1a36c0 2022-01-09 op }
 52 fb1a36c0 2022-01-09 op 
 53 fb1a36c0 2022-01-09 op int
 54 fb1a36c0 2022-01-09 op main(int argc, char **argv)
 55 fb1a36c0 2022-01-09 op {
 56 fb1a36c0 2022-01-09 op 	struct sockaddr_un	 sun;
 57 fb1a36c0 2022-01-09 op 	struct parse_result	*res;
 58 fb1a36c0 2022-01-09 op 	struct imsg		 imsg;
 59 fb1a36c0 2022-01-09 op 	int			 ctl_sock;
 60 fb1a36c0 2022-01-09 op 	int			 done = 0;
 61 fb1a36c0 2022-01-09 op 	int			 n, verbose = 0;
 62 fb1a36c0 2022-01-09 op 	int			 ch;
 63 fb1a36c0 2022-01-09 op 	const char		*sockname;
 64 fb1a36c0 2022-01-09 op 
 65 fb1a36c0 2022-01-09 op 	log_init(1, LOG_DAEMON); /* Log to stderr. */
 66 fb1a36c0 2022-01-09 op 
 67 fb1a36c0 2022-01-09 op 	sockname = KD_SOCKET;
 68 fb1a36c0 2022-01-09 op 	while ((ch = getopt(argc, argv, "s:")) != -1) {
 69 fb1a36c0 2022-01-09 op 		switch (ch) {
 70 fb1a36c0 2022-01-09 op 		case 's':
 71 fb1a36c0 2022-01-09 op 			sockname = optarg;
 72 fb1a36c0 2022-01-09 op 			break;
 73 fb1a36c0 2022-01-09 op 		default:
 74 fb1a36c0 2022-01-09 op 			usage();
 75 fb1a36c0 2022-01-09 op 		}
 76 fb1a36c0 2022-01-09 op 	}
 77 fb1a36c0 2022-01-09 op 	argc -= optind;
 78 fb1a36c0 2022-01-09 op 	argv += optind;
 79 fb1a36c0 2022-01-09 op 
 80 fb1a36c0 2022-01-09 op 	/* parse command line */
 81 fb1a36c0 2022-01-09 op 	if ((res = parse(argc, argv)) == NULL)
 82 fb1a36c0 2022-01-09 op 		exit(1);
 83 fb1a36c0 2022-01-09 op 
 84 fb1a36c0 2022-01-09 op 	/* connect to control socket */
 85 fb1a36c0 2022-01-09 op 	if ((ctl_sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
 86 fb1a36c0 2022-01-09 op 		err(1, "socket");
 87 fb1a36c0 2022-01-09 op 
 88 fb1a36c0 2022-01-09 op 	memset(&sun, 0, sizeof(sun));
 89 fb1a36c0 2022-01-09 op 	sun.sun_family = AF_UNIX;
 90 fb1a36c0 2022-01-09 op 	strlcpy(sun.sun_path, sockname, sizeof(sun.sun_path));
 91 fb1a36c0 2022-01-09 op 
 92 fb1a36c0 2022-01-09 op 	if (connect(ctl_sock, (struct sockaddr*)&sun, sizeof(sun)) == -1)
 93 fb1a36c0 2022-01-09 op 		err(1, "connect: %s", sockname);
 94 fb1a36c0 2022-01-09 op 
 95 fb1a36c0 2022-01-09 op #ifdef __OpenBSD__
 96 fb1a36c0 2022-01-09 op 	if (pledge("stdio", NULL) == -1)
 97 fb1a36c0 2022-01-09 op 		err(1, "pledge");
 98 fb1a36c0 2022-01-09 op #endif
 99 fb1a36c0 2022-01-09 op 
100 fb1a36c0 2022-01-09 op 	if ((ibuf = calloc(1, sizeof(*ibuf))) == NULL)
101 fb1a36c0 2022-01-09 op 		err(1, NULL);
102 fb1a36c0 2022-01-09 op 	imsg_init(ibuf, ctl_sock);
103 fb1a36c0 2022-01-09 op 	done = 0;
104 fb1a36c0 2022-01-09 op 
105 fb1a36c0 2022-01-09 op 	/* process user request */
106 fb1a36c0 2022-01-09 op 	switch (res->action) {
107 fb1a36c0 2022-01-09 op 	case LOG_VERBOSE:
108 fb1a36c0 2022-01-09 op 		verbose = 1;
109 fb1a36c0 2022-01-09 op 		/* fallthrough */
110 fb1a36c0 2022-01-09 op 	case LOG_BRIEF:
111 fb1a36c0 2022-01-09 op 		imsg_compose(ibuf, IMSG_CTL_LOG_VERBOSE, 0, 0, -1,
112 fb1a36c0 2022-01-09 op 		    &verbose, sizeof(verbose));
113 fb1a36c0 2022-01-09 op 		puts("logging request sent.");
114 fb1a36c0 2022-01-09 op 		done = 1;
115 fb1a36c0 2022-01-09 op 		break;
116 fb1a36c0 2022-01-09 op 	case RELOAD:
117 fb1a36c0 2022-01-09 op 		imsg_compose(ibuf, IMSG_CTL_RELOAD, 0, 0, -1, NULL, 0);
118 fb1a36c0 2022-01-09 op 		puts("reload request sent.");
119 fb1a36c0 2022-01-09 op 		done = 1;
120 fb1a36c0 2022-01-09 op 		break;
121 4fa9a307 2022-01-29 op 	case DEBUG:
122 4fa9a307 2022-01-29 op 		imsg_compose(ibuf, IMSG_CTL_DEBUG, 0, getpid(), -1, NULL, 0);
123 4fa9a307 2022-01-29 op 		break;
124 fb1a36c0 2022-01-09 op 	default:
125 fb1a36c0 2022-01-09 op 		usage();
126 fb1a36c0 2022-01-09 op 	}
127 fb1a36c0 2022-01-09 op 
128 4fa9a307 2022-01-29 op 	if (imsg_flush(ibuf) == -1)
129 4fa9a307 2022-01-29 op 		err(1, "imsg_flush");
130 fb1a36c0 2022-01-09 op 
131 fb1a36c0 2022-01-09 op 	while (!done) {
132 4fa9a307 2022-01-29 op 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
133 4fa9a307 2022-01-29 op 			errx(1, "write error");
134 fb1a36c0 2022-01-09 op 		if (n == 0)
135 4fa9a307 2022-01-29 op 			errx(0, "pipe closed");
136 fb1a36c0 2022-01-09 op 
137 4fa9a307 2022-01-29 op 		while (!done) {
138 4fa9a307 2022-01-29 op 			if ((n = imsg_get(ibuf, &imsg)) == -1)
139 4fa9a307 2022-01-29 op 				errx(1, "imsg_get error");
140 4fa9a307 2022-01-29 op 			if (n == 0)
141 4fa9a307 2022-01-29 op 				break;
142 4fa9a307 2022-01-29 op 
143 4fa9a307 2022-01-29 op 			switch (res->action) {
144 4fa9a307 2022-01-29 op 			case DEBUG: {
145 4fa9a307 2022-01-29 op 				struct kd_debug_info d;
146 4fa9a307 2022-01-29 op 
147 4fa9a307 2022-01-29 op 				if (imsg.hdr.type == IMSG_CTL_DEBUG_END) {
148 4fa9a307 2022-01-29 op 					done = 1;
149 4fa9a307 2022-01-29 op 					break;
150 4fa9a307 2022-01-29 op 				}
151 4fa9a307 2022-01-29 op 
152 4fa9a307 2022-01-29 op 				if (imsg.hdr.type != IMSG_CTL_DEBUG_BACK ||
153 4fa9a307 2022-01-29 op 				    IMSG_DATA_SIZE(imsg) != sizeof(d))
154 4fa9a307 2022-01-29 op 					errx(1, "got invalid reply (%d)",
155 4fa9a307 2022-01-29 op 					    imsg.hdr.type);
156 4fa9a307 2022-01-29 op 
157 4fa9a307 2022-01-29 op 				memcpy(&d, imsg.data, sizeof(d));
158 4fa9a307 2022-01-29 op 				if (d.path[sizeof(d.path)-1] != '\0')
159 4fa9a307 2022-01-29 op 					errx(1, "got invalid reply");
160 4fa9a307 2022-01-29 op 
161 4fa9a307 2022-01-29 op 				printf("%"PRIu32"\t%"PRIu32"\t%s\n",
162 4fa9a307 2022-01-29 op 				    d.client_id, d.fid, d.path);
163 4fa9a307 2022-01-29 op 				break;
164 4fa9a307 2022-01-29 op 			}
165 4fa9a307 2022-01-29 op 			default:
166 4fa9a307 2022-01-29 op 				break;
167 4fa9a307 2022-01-29 op 			}
168 4fa9a307 2022-01-29 op 			imsg_free(&imsg);
169 fb1a36c0 2022-01-09 op 		}
170 fb1a36c0 2022-01-09 op 	}
171 fb1a36c0 2022-01-09 op 	close(ctl_sock);
172 fb1a36c0 2022-01-09 op 	free(ibuf);
173 fb1a36c0 2022-01-09 op 
174 fb1a36c0 2022-01-09 op 	return 0;
175 fb1a36c0 2022-01-09 op }