diff options
Diffstat (limited to 'usr.bin/iscsictl/iscsictl.c')
| -rw-r--r-- | usr.bin/iscsictl/iscsictl.c | 732 |
1 files changed, 732 insertions, 0 deletions
diff --git a/usr.bin/iscsictl/iscsictl.c b/usr.bin/iscsictl/iscsictl.c new file mode 100644 index 0000000..ff37c12 --- /dev/null +++ b/usr.bin/iscsictl/iscsictl.c @@ -0,0 +1,732 @@ +/*- + * Copyright (c) 2012 The FreeBSD Foundation + * All rights reserved. + * + * This software was developed by Edward Tomasz Napierala under sponsorship + * from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/ioctl.h> +#include <assert.h> +#include <ctype.h> +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <iscsi_ioctl.h> +#include "iscsictl.h" + +struct conf * +conf_new(void) +{ + struct conf *conf; + + conf = calloc(1, sizeof(*conf)); + if (conf == NULL) + err(1, "calloc"); + + TAILQ_INIT(&conf->conf_targets); + + return (conf); +} + +struct target * +target_find(struct conf *conf, const char *nickname) +{ + struct target *targ; + + TAILQ_FOREACH(targ, &conf->conf_targets, t_next) { + if (targ->t_nickname != NULL && + strcasecmp(targ->t_nickname, nickname) == 0) + return (targ); + } + + return (NULL); +} + +struct target * +target_new(struct conf *conf) +{ + struct target *targ; + + targ = calloc(1, sizeof(*targ)); + if (targ == NULL) + err(1, "calloc"); + targ->t_conf = conf; + TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next); + + return (targ); +} + +void +target_delete(struct target *targ) +{ + + TAILQ_REMOVE(&targ->t_conf->conf_targets, targ, t_next); + free(targ); +} + + +static char * +default_initiator_name(void) +{ + char *name; + size_t namelen; + int error; + + namelen = _POSIX_HOST_NAME_MAX + strlen(DEFAULT_IQN); + + name = calloc(1, namelen + 1); + if (name == NULL) + err(1, "calloc"); + strcpy(name, DEFAULT_IQN); + error = gethostname(name + strlen(DEFAULT_IQN), + namelen - strlen(DEFAULT_IQN)); + if (error != 0) + err(1, "gethostname"); + + return (name); +} + +static bool +valid_hex(const char ch) +{ + switch (ch) { + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + case 'a': + case 'A': + case 'b': + case 'B': + case 'c': + case 'C': + case 'd': + case 'D': + case 'e': + case 'E': + case 'f': + case 'F': + return (true); + default: + return (false); + } +} + +bool +valid_iscsi_name(const char *name) +{ + int i; + + if (strlen(name) >= MAX_NAME_LEN) { + warnx("overlong name for \"%s\"; max length allowed " + "by iSCSI specification is %d characters", + name, MAX_NAME_LEN); + return (false); + } + + /* + * In the cases below, we don't return an error, just in case the admin + * was right, and we're wrong. + */ + if (strncasecmp(name, "iqn.", strlen("iqn.")) == 0) { + for (i = strlen("iqn."); name[i] != '\0'; i++) { + /* + * XXX: We should verify UTF-8 normalisation, as defined + * by 3.2.6.2: iSCSI Name Encoding. + */ + if (isalnum(name[i])) + continue; + if (name[i] == '-' || name[i] == '.' || name[i] == ':') + continue; + warnx("invalid character \"%c\" in iSCSI name " + "\"%s\"; allowed characters are letters, digits, " + "'-', '.', and ':'", name[i], name); + break; + } + /* + * XXX: Check more stuff: valid date and a valid reversed domain. + */ + } else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) { + if (strlen(name) != strlen("eui.") + 16) + warnx("invalid iSCSI name \"%s\"; the \"eui.\" " + "should be followed by exactly 16 hexadecimal " + "digits", name); + for (i = strlen("eui."); name[i] != '\0'; i++) { + if (!valid_hex(name[i])) { + warnx("invalid character \"%c\" in iSCSI " + "name \"%s\"; allowed characters are 1-9 " + "and A-F", name[i], name); + break; + } + } + } else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) { + if (strlen(name) > strlen("naa.") + 32) + warnx("invalid iSCSI name \"%s\"; the \"naa.\" " + "should be followed by at most 32 hexadecimal " + "digits", name); + for (i = strlen("naa."); name[i] != '\0'; i++) { + if (!valid_hex(name[i])) { + warnx("invalid character \"%c\" in ISCSI " + "name \"%s\"; allowed characters are 1-9 " + "and A-F", name[i], name); + break; + } + } + } else { + warnx("invalid iSCSI name \"%s\"; should start with " + "either \".iqn\", \"eui.\", or \"naa.\"", + name); + } + return (true); +} + +void +conf_verify(struct conf *conf) +{ + struct target *targ; + + TAILQ_FOREACH(targ, &conf->conf_targets, t_next) { + assert(targ->t_nickname != NULL); + if (targ->t_session_type == SESSION_TYPE_UNSPECIFIED) + targ->t_session_type = SESSION_TYPE_NORMAL; + if (targ->t_session_type == SESSION_TYPE_NORMAL && + targ->t_name == NULL) + errx(1, "missing TargetName for target \"%s\"", + targ->t_nickname); + if (targ->t_session_type == SESSION_TYPE_DISCOVERY && + targ->t_name != NULL) + errx(1, "cannot specify TargetName for discovery " + "sessions for target \"%s\"", targ->t_nickname); + if (targ->t_name != NULL) { + if (valid_iscsi_name(targ->t_name) == false) + errx(1, "invalid target name \"%s\"", + targ->t_name); + } + if (targ->t_protocol == PROTOCOL_UNSPECIFIED) + targ->t_protocol = PROTOCOL_ISCSI; +#ifndef ICL_KERNEL_PROXY + if (targ->t_protocol == PROTOCOL_ISER) + errx(1, "iSER support requires ICL_KERNEL_PROXY; " + "see iscsi(4) for details"); +#endif + if (targ->t_address == NULL) + errx(1, "missing TargetAddress for target \"%s\"", + targ->t_nickname); + if (targ->t_initiator_name == NULL) + targ->t_initiator_name = default_initiator_name(); + if (valid_iscsi_name(targ->t_initiator_name) == false) + errx(1, "invalid initiator name \"%s\"", + targ->t_initiator_name); + if (targ->t_header_digest == DIGEST_UNSPECIFIED) + targ->t_header_digest = DIGEST_NONE; + if (targ->t_data_digest == DIGEST_UNSPECIFIED) + targ->t_data_digest = DIGEST_NONE; + if (targ->t_auth_method == AUTH_METHOD_UNSPECIFIED) { + if (targ->t_user != NULL || targ->t_secret != NULL || + targ->t_mutual_user != NULL || + targ->t_mutual_secret != NULL) + targ->t_auth_method = + AUTH_METHOD_CHAP; + else + targ->t_auth_method = + AUTH_METHOD_NONE; + } + if (targ->t_auth_method == AUTH_METHOD_CHAP) { + if (targ->t_user == NULL) { + errx(1, "missing chapIName for target \"%s\"", + targ->t_nickname); + } + if (targ->t_secret == NULL) + errx(1, "missing chapSecret for target \"%s\"", + targ->t_nickname); + if (targ->t_mutual_user != NULL || + targ->t_mutual_secret != NULL) { + if (targ->t_mutual_user == NULL) + errx(1, "missing tgtChapName for " + "target \"%s\"", targ->t_nickname); + if (targ->t_mutual_secret == NULL) + errx(1, "missing tgtChapSecret for " + "target \"%s\"", targ->t_nickname); + } + } + } +} + +static void +conf_from_target(struct iscsi_session_conf *conf, + const struct target *targ) +{ + memset(conf, 0, sizeof(*conf)); + + /* + * XXX: Check bounds and return error instead of silently truncating. + */ + if (targ->t_initiator_name != NULL) + strlcpy(conf->isc_initiator, targ->t_initiator_name, + sizeof(conf->isc_initiator)); + if (targ->t_initiator_address != NULL) + strlcpy(conf->isc_initiator_addr, targ->t_initiator_address, + sizeof(conf->isc_initiator_addr)); + if (targ->t_initiator_alias != NULL) + strlcpy(conf->isc_initiator_alias, targ->t_initiator_alias, + sizeof(conf->isc_initiator_alias)); + if (targ->t_name != NULL) + strlcpy(conf->isc_target, targ->t_name, + sizeof(conf->isc_target)); + if (targ->t_address != NULL) + strlcpy(conf->isc_target_addr, targ->t_address, + sizeof(conf->isc_target_addr)); + if (targ->t_user != NULL) + strlcpy(conf->isc_user, targ->t_user, + sizeof(conf->isc_user)); + if (targ->t_secret != NULL) + strlcpy(conf->isc_secret, targ->t_secret, + sizeof(conf->isc_secret)); + if (targ->t_mutual_user != NULL) + strlcpy(conf->isc_mutual_user, targ->t_mutual_user, + sizeof(conf->isc_mutual_user)); + if (targ->t_mutual_secret != NULL) + strlcpy(conf->isc_mutual_secret, targ->t_mutual_secret, + sizeof(conf->isc_mutual_secret)); + if (targ->t_session_type == SESSION_TYPE_DISCOVERY) + conf->isc_discovery = 1; + if (targ->t_protocol == PROTOCOL_ISER) + conf->isc_iser = 1; + if (targ->t_header_digest == DIGEST_CRC32C) + conf->isc_header_digest = ISCSI_DIGEST_CRC32C; + else + conf->isc_header_digest = ISCSI_DIGEST_NONE; + if (targ->t_data_digest == DIGEST_CRC32C) + conf->isc_data_digest = ISCSI_DIGEST_CRC32C; + else + conf->isc_data_digest = ISCSI_DIGEST_NONE; +} + +static int +kernel_add(int iscsi_fd, const struct target *targ) +{ + struct iscsi_session_add isa; + int error; + + memset(&isa, 0, sizeof(isa)); + conf_from_target(&isa.isa_conf, targ); + error = ioctl(iscsi_fd, ISCSISADD, &isa); + if (error != 0) + warn("ISCSISADD"); + return (error); +} + +static int +kernel_remove(int iscsi_fd, const struct target *targ) +{ + struct iscsi_session_remove isr; + int error; + + memset(&isr, 0, sizeof(isr)); + conf_from_target(&isr.isr_conf, targ); + error = ioctl(iscsi_fd, ISCSISREMOVE, &isr); + if (error != 0) + warn("ISCSISREMOVE"); + return (error); +} + +/* + * XXX: Add filtering. + */ +static int +kernel_list(int iscsi_fd, const struct target *targ __unused, + int verbose) +{ + struct iscsi_session_state *states = NULL; + const struct iscsi_session_state *state; + const struct iscsi_session_conf *conf; + struct iscsi_session_list isl; + unsigned int i, nentries = 1; + int error; + bool show_periphs; + + for (;;) { + states = realloc(states, + nentries * sizeof(struct iscsi_session_state)); + if (states == NULL) + err(1, "realloc"); + + memset(&isl, 0, sizeof(isl)); + isl.isl_nentries = nentries; + isl.isl_pstates = states; + + error = ioctl(iscsi_fd, ISCSISLIST, &isl); + if (error != 0 && errno == EMSGSIZE) { + nentries *= 4; + continue; + } + break; + } + if (error != 0) { + warn("ISCSISLIST"); + return (error); + } + + if (verbose != 0) { + for (i = 0; i < isl.isl_nentries; i++) { + state = &states[i]; + conf = &state->iss_conf; + + printf("Session ID: %d\n", state->iss_id); + printf("Initiator name: %s\n", conf->isc_initiator); + printf("Initiator addr: %s\n", + conf->isc_initiator_addr); + printf("Initiator alias: %s\n", + conf->isc_initiator_alias); + printf("Target name: %s\n", conf->isc_target); + printf("Target addr: %s\n", + conf->isc_target_addr); + printf("Target alias: %s\n", + state->iss_target_alias); + printf("User: %s\n", conf->isc_user); + printf("Secret: %s\n", conf->isc_secret); + printf("Mutual user: %s\n", + conf->isc_mutual_user); + printf("Mutual secret: %s\n", + conf->isc_mutual_secret); + printf("Session type: %s\n", + conf->isc_discovery ? "Discovery" : "Normal"); + printf("Session state: %s\n", + state->iss_connected ? + "Connected" : "Disconnected"); + printf("Failure reason: %s\n", state->iss_reason); + printf("Header digest: %s\n", + state->iss_header_digest == ISCSI_DIGEST_CRC32C ? + "CRC32C" : "None"); + printf("Data digest: %s\n", + state->iss_data_digest == ISCSI_DIGEST_CRC32C ? + "CRC32C" : "None"); + printf("DataSegmentLen: %d\n", + state->iss_max_data_segment_length); + printf("ImmediateData: %s\n", + state->iss_immediate_data ? "Yes" : "No"); + printf("iSER (RDMA): %s\n", + conf->isc_iser ? "Yes" : "No"); + printf("Device nodes: "); + print_periphs(state->iss_id); + printf("\n\n"); + } + } else { + printf("%-36s %-16s %s\n", + "Target name", "Target addr", "State"); + for (i = 0; i < isl.isl_nentries; i++) { + state = &states[i]; + conf = &state->iss_conf; + show_periphs = false; + + printf("%-36s %-16s ", + conf->isc_target, conf->isc_target_addr); + + if (state->iss_reason[0] != '\0') { + printf("%s\n", state->iss_reason); + } else { + if (conf->isc_discovery) { + printf("Discovery\n"); + } else if (state->iss_connected) { + printf("Connected: "); + print_periphs(state->iss_id); + printf("\n"); + } else { + printf("Disconnected\n"); + } + } + } + } + + return (0); +} + +static void +usage(void) +{ + + fprintf(stderr, "usage: iscsictl -A -h host -t target " + "[-u user -s secret]\n"); + fprintf(stderr, " iscsictl -A -d discovery-host " + "[-u user -s secret]\n"); + fprintf(stderr, " iscsictl -A -a [-c path]\n"); + fprintf(stderr, " iscsictl -A -n nickname [-c path]\n"); + fprintf(stderr, " iscsictl -R [-h host] [-t target]\n"); + fprintf(stderr, " iscsictl -R -a\n"); + fprintf(stderr, " iscsictl -R -n nickname [-c path]\n"); + fprintf(stderr, " iscsictl -L [-v]\n"); + exit(1); +} + +char * +checked_strdup(const char *s) +{ + char *c; + + c = strdup(s); + if (c == NULL) + err(1, "strdup"); + return (c); +} + +int +main(int argc, char **argv) +{ + int Aflag = 0, Rflag = 0, Lflag = 0, aflag = 0, vflag = 0; + const char *conf_path = DEFAULT_CONFIG_PATH; + char *nickname = NULL, *discovery_host = NULL, *host = NULL, + *target = NULL, *user = NULL, *secret = NULL; + int ch, error, iscsi_fd; + int failed = 0; + struct conf *conf; + struct target *targ; + + while ((ch = getopt(argc, argv, "ARLac:d:n:h:t:u:s:v")) != -1) { + switch (ch) { + case 'A': + Aflag = 1; + break; + case 'R': + Rflag = 1; + break; + case 'L': + Lflag = 1; + break; + case 'a': + aflag = 1; + break; + case 'c': + conf_path = optarg; + break; + case 'd': + discovery_host = optarg; + break; + case 'n': + nickname = optarg; + break; + case 'h': + host = optarg; + break; + case 't': + target = optarg; + break; + case 'u': + user = optarg; + break; + case 's': + secret = optarg; + break; + case 'v': + vflag = 1; + break; + case '?': + default: + usage(); + } + } + argc -= optind; + if (argc != 0) + usage(); + + if (Aflag + Rflag + Lflag == 0) + Lflag = 1; + if (Aflag + Rflag + Lflag > 1) + errx(1, "at most one of -A, -R, or -L may be specified"); + + /* + * Note that we ignore unneccessary/inapplicable "-c" flag; so that + * people can do something like "alias ISCSICTL="iscsictl -c path" + * in shell scripts. + */ + if (Aflag != 0) { + if (aflag != 0) { + if (host != NULL) + errx(1, "-a and -h and mutually exclusive"); + if (target != NULL) + errx(1, "-a and -t and mutually exclusive"); + if (user != NULL) + errx(1, "-a and -u and mutually exclusive"); + if (secret != NULL) + errx(1, "-a and -s and mutually exclusive"); + if (nickname != NULL) + errx(1, "-a and -n and mutually exclusive"); + if (discovery_host != NULL) + errx(1, "-a and -d and mutually exclusive"); + } else if (nickname != NULL) { + if (host != NULL) + errx(1, "-n and -h and mutually exclusive"); + if (target != NULL) + errx(1, "-n and -t and mutually exclusive"); + if (user != NULL) + errx(1, "-n and -u and mutually exclusive"); + if (secret != NULL) + errx(1, "-n and -s and mutually exclusive"); + if (discovery_host != NULL) + errx(1, "-n and -d and mutually exclusive"); + } else if (discovery_host != NULL) { + if (host != NULL) + errx(1, "-d and -h and mutually exclusive"); + if (target != NULL) + errx(1, "-d and -t and mutually exclusive"); + } else { + if (target == NULL && host == NULL) + errx(1, "must specify -a, -n or -t/-h"); + + if (target != NULL && host == NULL) + errx(1, "-t must always be used with -h"); + if (host != NULL && target == NULL) + errx(1, "-h must always be used with -t"); + } + + if (user != NULL && secret == NULL) + errx(1, "-u must always be used with -s"); + if (secret != NULL && user == NULL) + errx(1, "-s must always be used with -u"); + + if (vflag != 0) + errx(1, "-v cannot be used with -A"); + + } else if (Rflag != 0) { + if (user != NULL) + errx(1, "-R and -u are mutually exclusive"); + if (secret != NULL) + errx(1, "-R and -s are mutually exclusive"); + if (discovery_host != NULL) + errx(1, "-R and -d are mutually exclusive"); + + if (aflag != 0) { + if (host != NULL) + errx(1, "-a and -h and mutually exclusive"); + if (target != NULL) + errx(1, "-a and -t and mutually exclusive"); + if (nickname != NULL) + errx(1, "-a and -n and mutually exclusive"); + } else if (nickname != NULL) { + if (host != NULL) + errx(1, "-n and -h and mutually exclusive"); + if (target != NULL) + errx(1, "-n and -t and mutually exclusive"); + } else if (host != NULL) { + if (target != NULL) + errx(1, "-h and -t and mutually exclusive"); + } else if (target != NULL) { + if (host != NULL) + errx(1, "-t and -h and mutually exclusive"); + } else + errx(1, "must specify either-a, -n, -t, or -h"); + + if (vflag != 0) + errx(1, "-v cannot be used with -R"); + + } else { + assert(Lflag != 0); + + if (host != NULL) + errx(1, "-L and -h and mutually exclusive"); + if (target != NULL) + errx(1, "-L and -t and mutually exclusive"); + if (user != NULL) + errx(1, "-L and -u and mutually exclusive"); + if (secret != NULL) + errx(1, "-L and -s and mutually exclusive"); + if (nickname != NULL) + errx(1, "-L and -n and mutually exclusive"); + if (discovery_host != NULL) + errx(1, "-L and -d and mutually exclusive"); + } + + iscsi_fd = open(ISCSI_PATH, O_RDWR); + if (iscsi_fd < 0) + err(1, "failed to open %s", ISCSI_PATH); + + if (Aflag != 0 && aflag != 0) { + conf = conf_new_from_file(conf_path); + + TAILQ_FOREACH(targ, &conf->conf_targets, t_next) + failed += kernel_add(iscsi_fd, targ); + } else if (nickname != NULL) { + conf = conf_new_from_file(conf_path); + targ = target_find(conf, nickname); + if (targ == NULL) + errx(1, "target %s not found in the configuration file", + nickname); + + if (Aflag != 0) + failed += kernel_add(iscsi_fd, targ); + else if (Rflag != 0) + failed += kernel_remove(iscsi_fd, targ); + else + failed += kernel_list(iscsi_fd, targ, vflag); + } else { + if (Aflag != 0 && target != NULL) { + if (valid_iscsi_name(target) == false) + errx(1, "invalid target name \"%s\"", target); + } + conf = conf_new(); + targ = target_new(conf); + targ->t_initiator_name = default_initiator_name(); + targ->t_header_digest = DIGEST_NONE; + targ->t_data_digest = DIGEST_NONE; + targ->t_name = target; + if (discovery_host != NULL) { + targ->t_session_type = SESSION_TYPE_DISCOVERY; + targ->t_address = discovery_host; + } else { + targ->t_session_type = SESSION_TYPE_NORMAL; + targ->t_address = host; + } + targ->t_user = user; + targ->t_secret = secret; + + if (Aflag != 0) + failed += kernel_add(iscsi_fd, targ); + else if (Rflag != 0) + failed += kernel_remove(iscsi_fd, targ); + else + failed += kernel_list(iscsi_fd, targ, vflag); + } + + error = close(iscsi_fd); + if (error != 0) + err(1, "close"); + + if (failed > 0) + return (1); + return (0); +} |
