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/* $OpenBSD: iscsictl.c,v 1.11 2016/08/16 18:41:57 tedu Exp $ */ |
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/* |
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* Copyright (c) 2010 Claudio Jeker <claudio@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/queue.h> |
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#include <sys/socket.h> |
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#include <sys/uio.h> |
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#include <sys/un.h> |
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#include <event.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <util.h> |
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#include "iscsid.h" |
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#include "iscsictl.h" |
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__dead void usage(void); |
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void run(void); |
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void run_command(struct pdu *); |
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struct pdu *ctl_getpdu(char *, size_t); |
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int ctl_sendpdu(int, struct pdu *); |
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void show_config(struct ctrlmsghdr *, struct pdu *); |
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void show_vscsi_stats(struct ctrlmsghdr *, struct pdu *); |
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char cbuf[CONTROL_READ_SIZE]; |
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struct control { |
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struct pduq channel; |
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int fd; |
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} control; |
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__dead void |
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usage(void) |
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{ |
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extern char *__progname; |
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fprintf(stderr,"usage: %s [-s socket] command [argument ...]\n", |
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__progname); |
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exit(1); |
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} |
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int |
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main (int argc, char* argv[]) |
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{ |
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struct sockaddr_un sun; |
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struct session_config sc; |
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struct parse_result *res; |
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char *confname = ISCSID_CONFIG; |
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char *sockname = ISCSID_CONTROL; |
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struct session_ctlcfg *s; |
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struct iscsi_config *cf; |
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int ch, val = 0; |
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/* check flags */ |
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while ((ch = getopt(argc, argv, "f:s:")) != -1) { |
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switch (ch) { |
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case 'f': |
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confname = optarg; |
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break; |
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case 's': |
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sockname = optarg; |
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break; |
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default: |
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usage(); |
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/* NOTREACHED */ |
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} |
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} |
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argc -= optind; |
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argv += optind; |
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/* parse options */ |
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if ((res = parse(argc, argv)) == NULL) |
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exit(1); |
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/* connect to iscsid control socket */ |
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TAILQ_INIT(&control.channel); |
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if ((control.fd = socket(AF_UNIX, SOCK_SEQPACKET, 0)) == -1) |
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err(1, "socket"); |
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bzero(&sun, sizeof(sun)); |
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sun.sun_family = AF_UNIX; |
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strlcpy(sun.sun_path, sockname, sizeof(sun.sun_path)); |
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if (connect(control.fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) |
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err(1, "connect: %s", sockname); |
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if (pledge("stdio rpath dns flock cpath wpath", NULL) == -1) |
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err(1, "pledge"); |
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switch (res->action) { |
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case NONE: |
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case LOG_VERBOSE: |
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val = 1; |
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/* FALLTHROUGH */ |
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case LOG_BRIEF: |
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if (control_compose(NULL, CTRL_LOG_VERBOSE, |
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&val, sizeof(int)) == -1) |
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err(1, "control_compose"); |
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break; |
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case SHOW_SUM: |
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if (control_compose(NULL, CTRL_SHOW_SUM, NULL, 0) == -1) |
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err(1, "control_compose"); |
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break; |
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case SHOW_SESS: |
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usage(); |
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/* NOTREACHED */ |
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case SHOW_VSCSI_STATS: |
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if (control_compose(NULL, CTRL_VSCSI_STATS, NULL, 0) == -1) |
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err(1, "control_compose"); |
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break; |
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case RELOAD: |
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if ((cf = parse_config(confname)) == NULL) |
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errx(1, "errors while loading configuration file."); |
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if (cf->initiator.isid_base != 0) { |
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if (control_compose(NULL, CTRL_INITIATOR_CONFIG, |
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&cf->initiator, sizeof(cf->initiator)) == -1) |
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err(1, "control_compose"); |
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} |
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SIMPLEQ_FOREACH(s, &cf->sessions, entry) { |
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struct ctrldata cdv[3]; |
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bzero(cdv, sizeof(cdv)); |
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cdv[0].buf = &s->session; |
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cdv[0].len = sizeof(s->session); |
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if (s->session.TargetName) { |
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cdv[1].buf = s->session.TargetName; |
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cdv[1].len = |
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strlen(s->session.TargetName) + 1; |
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} |
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if (s->session.InitiatorName) { |
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cdv[2].buf = s->session.InitiatorName; |
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cdv[2].len = |
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strlen(s->session.InitiatorName) + 1; |
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} |
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if (control_build(NULL, CTRL_SESSION_CONFIG, |
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nitems(cdv), cdv) == -1) |
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err(1, "control_build"); |
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} |
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break; |
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case DISCOVERY: |
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printf("discover %s\n", log_sockaddr(&res->addr)); |
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bzero(&sc, sizeof(sc)); |
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snprintf(sc.SessionName, sizeof(sc.SessionName), |
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"discovery.%d", (int)getpid()); |
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bcopy(&res->addr, &sc.connection.TargetAddr, res->addr.ss_len); |
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sc.SessionType = SESSION_TYPE_DISCOVERY; |
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if (control_compose(NULL, CTRL_SESSION_CONFIG, |
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&sc, sizeof(sc)) == -1) |
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err(1, "control_compose"); |
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} |
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run(); |
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close(control.fd); |
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return (0); |
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} |
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void |
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control_queue(void *ch, struct pdu *pdu) |
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{ |
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TAILQ_INSERT_TAIL(&control.channel, pdu, entry); |
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} |
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void |
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run(void) |
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{ |
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struct pdu *pdu; |
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while ((pdu = TAILQ_FIRST(&control.channel)) != NULL) { |
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TAILQ_REMOVE(&control.channel, pdu, entry); |
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run_command(pdu); |
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} |
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} |
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void |
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run_command(struct pdu *pdu) |
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{ |
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struct ctrlmsghdr *cmh; |
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int done = 0; |
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ssize_t n; |
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if (ctl_sendpdu(control.fd, pdu) == -1) |
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err(1, "send"); |
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while (!done) { |
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if ((n = recv(control.fd, cbuf, sizeof(cbuf), 0)) == -1 && |
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!(errno == EAGAIN || errno == EINTR)) |
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err(1, "recv"); |
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if (n == 0) |
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errx(1, "connection to iscsid closed"); |
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pdu = ctl_getpdu(cbuf, n); |
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cmh = pdu_getbuf(pdu, NULL, 0); |
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if (cmh == NULL) |
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break; |
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switch (cmh->type) { |
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case CTRL_SUCCESS: |
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printf("command successful\n"); |
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done = 1; |
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break; |
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case CTRL_FAILURE: |
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printf("command failed\n"); |
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done = 1; |
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break; |
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case CTRL_INPROGRESS: |
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printf("command in progress...\n"); |
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break; |
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case CTRL_INITIATOR_CONFIG: |
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case CTRL_SESSION_CONFIG: |
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show_config(cmh, pdu); |
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break; |
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case CTRL_VSCSI_STATS: |
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show_vscsi_stats(cmh, pdu); |
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done = 1; |
239 |
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break; |
240 |
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} |
241 |
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} |
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} |
243 |
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struct pdu * |
245 |
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ctl_getpdu(char *buf, size_t len) |
246 |
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{ |
247 |
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struct pdu *p; |
248 |
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struct ctrlmsghdr *cmh; |
249 |
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void *data; |
250 |
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size_t n; |
251 |
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int i; |
252 |
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253 |
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if (len < sizeof(*cmh)) |
254 |
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return NULL; |
255 |
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256 |
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if (!(p = pdu_new())) |
257 |
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return NULL; |
258 |
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259 |
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n = sizeof(*cmh); |
260 |
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cmh = pdu_alloc(n); |
261 |
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bcopy(buf, cmh, n); |
262 |
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buf += n; |
263 |
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len -= n; |
264 |
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265 |
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if (pdu_addbuf(p, cmh, n, 0)) { |
266 |
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free(cmh); |
267 |
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fail: |
268 |
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pdu_free(p); |
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return NULL; |
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} |
271 |
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272 |
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for (i = 0; i < 3; i++) { |
273 |
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n = cmh->len[i]; |
274 |
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if (n == 0) |
275 |
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continue; |
276 |
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if (PDU_LEN(n) > len) |
277 |
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goto fail; |
278 |
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if (!(data = pdu_alloc(n))) |
279 |
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goto fail; |
280 |
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bcopy(buf, data, n); |
281 |
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if (pdu_addbuf(p, data, n, i + 1)) { |
282 |
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free(data); |
283 |
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goto fail; |
284 |
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} |
285 |
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buf += PDU_LEN(n); |
286 |
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len -= PDU_LEN(n); |
287 |
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} |
288 |
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289 |
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return p; |
290 |
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} |
291 |
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292 |
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int |
293 |
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ctl_sendpdu(int fd, struct pdu *pdu) |
294 |
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{ |
295 |
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struct iovec iov[PDU_MAXIOV]; |
296 |
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struct msghdr msg; |
297 |
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unsigned int niov = 0; |
298 |
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299 |
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for (niov = 0; niov < PDU_MAXIOV; niov++) { |
300 |
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iov[niov].iov_base = pdu->iov[niov].iov_base; |
301 |
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iov[niov].iov_len = pdu->iov[niov].iov_len; |
302 |
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} |
303 |
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bzero(&msg, sizeof(msg)); |
304 |
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msg.msg_iov = iov; |
305 |
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msg.msg_iovlen = niov; |
306 |
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if (sendmsg(fd, &msg, 0) == -1) |
307 |
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return -1; |
308 |
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return 0; |
309 |
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} |
310 |
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311 |
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void |
312 |
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show_config(struct ctrlmsghdr *cmh, struct pdu *pdu) |
313 |
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{ |
314 |
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struct initiator_config *ic; |
315 |
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struct session_config *sc; |
316 |
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char *name; |
317 |
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318 |
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switch (cmh->type) { |
319 |
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case CTRL_INITIATOR_CONFIG: |
320 |
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if (cmh->len[0] != sizeof(*ic)) |
321 |
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errx(1, "bad size of response"); |
322 |
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ic = pdu_getbuf(pdu, NULL, 1); |
323 |
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if (ic == NULL) |
324 |
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return; |
325 |
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326 |
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printf("Initiator: ISID base %x qalifier %hx\n", |
327 |
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ic->isid_base, ic->isid_qual); |
328 |
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break; |
329 |
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case CTRL_SESSION_CONFIG: |
330 |
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if (cmh->len[0] != sizeof(*sc)) |
331 |
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errx(1, "bad size of response"); |
332 |
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sc = pdu_getbuf(pdu, NULL, 1); |
333 |
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if (sc == NULL) |
334 |
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return; |
335 |
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|
336 |
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printf("\nSession '%s':%s\n", sc->SessionName, |
337 |
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sc->disabled ? " disabled" : ""); |
338 |
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printf(" SessionType: %s\tMaxConnections: %hd\n", |
339 |
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sc->SessionType == SESSION_TYPE_DISCOVERY ? "discovery" : |
340 |
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"normal", sc->MaxConnections); |
341 |
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if ((name = pdu_getbuf(pdu, NULL, 2))) |
342 |
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printf(" TargetName: %s\n", name); |
343 |
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printf(" TargetAddr: %s\n", |
344 |
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log_sockaddr(&sc->connection.TargetAddr)); |
345 |
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if ((name = pdu_getbuf(pdu, NULL, 3))) |
346 |
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printf(" InitiatorName: %s\n", name); |
347 |
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printf(" InitiatorAddr: %s\n", |
348 |
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log_sockaddr(&sc->connection.LocalAddr)); |
349 |
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break; |
350 |
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} |
351 |
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} |
352 |
|
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|
353 |
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void |
354 |
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show_vscsi_stats(struct ctrlmsghdr *cmh, struct pdu *pdu) |
355 |
|
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{ |
356 |
|
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struct vscsi_stats *vs; |
357 |
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char buf[FMT_SCALED_STRSIZE]; |
358 |
|
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|
359 |
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if (cmh->len[0] != sizeof(struct vscsi_stats)) |
360 |
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errx(1, "bad size of response"); |
361 |
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vs = pdu_getbuf(pdu, NULL, 1); |
362 |
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if (vs == NULL) |
363 |
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return; |
364 |
|
|
|
365 |
|
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printf("VSCSI ioctl statistics:\n"); |
366 |
|
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printf("%u probe calls and %u detach calls\n", |
367 |
|
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vs->cnt_probe, vs->cnt_detach); |
368 |
|
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printf("%llu I2T calls (%llu read, %llu writes)\n", |
369 |
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vs->cnt_i2t, |
370 |
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vs->cnt_i2t_dir[1], |
371 |
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vs->cnt_i2t_dir[2]); |
372 |
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|
373 |
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if (fmt_scaled(vs->bytes_rd, buf) != 0) |
374 |
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(void)strlcpy(buf, "NaN", sizeof(buf)); |
375 |
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printf("%llu data reads (%s bytes read)\n", vs->cnt_read, buf); |
376 |
|
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if (fmt_scaled(vs->bytes_wr, buf) != 0) |
377 |
|
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(void)strlcpy(buf, "NaN", sizeof(buf)); |
378 |
|
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printf("%llu data writes (%s bytes written)\n", vs->cnt_write, buf); |
379 |
|
|
|
380 |
|
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printf("%llu T2I calls (%llu done, %llu sense errors, %llu errors)\n", |
381 |
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vs->cnt_t2i, |
382 |
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vs->cnt_t2i_status[0], |
383 |
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vs->cnt_t2i_status[1], |
384 |
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vs->cnt_t2i_status[2]); |
385 |
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|
} |