Author: trasz
Date: Sun Apr 12 09:36:50 2015
New Revision: 281461
URL: https://svnweb.freebsd.org/changeset/base/281461

Log:
  Add libxo(3) support to iscsictl(8).
  
  PR:           198396
  Submitted by: Marie Helene Kvello-Aune <marieheleneka at gmail.com>
  MFC after:    1 month
  Sponsored by: The FreeBSD Foundation

Modified:
  head/usr.bin/iscsictl/Makefile
  head/usr.bin/iscsictl/iscsictl.c
  head/usr.bin/iscsictl/parse.y
  head/usr.bin/iscsictl/periphs.c

Modified: head/usr.bin/iscsictl/Makefile
==============================================================================
--- head/usr.bin/iscsictl/Makefile      Sun Apr 12 08:19:04 2015        
(r281460)
+++ head/usr.bin/iscsictl/Makefile      Sun Apr 12 09:36:50 2015        
(r281461)
@@ -6,6 +6,8 @@ CFLAGS+=        -I${.CURDIR}
 CFLAGS+=       -I${.CURDIR}/../../sys/dev/iscsi
 MAN=           iscsi.conf.5 iscsictl.8
 
+LIBADD=                xo
+
 YFLAGS+=       -v
 LFLAGS+=       -i
 CLEANFILES=    y.tab.c y.tab.h y.output

Modified: head/usr.bin/iscsictl/iscsictl.c
==============================================================================
--- head/usr.bin/iscsictl/iscsictl.c    Sun Apr 12 08:19:04 2015        
(r281460)
+++ head/usr.bin/iscsictl/iscsictl.c    Sun Apr 12 09:36:50 2015        
(r281461)
@@ -36,7 +36,6 @@ __FBSDID("$FreeBSD$");
 #include <sys/linker.h>
 #include <assert.h>
 #include <ctype.h>
-#include <err.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
@@ -44,6 +43,7 @@ __FBSDID("$FreeBSD$");
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <libxo/xo.h>
 
 #include <iscsi_ioctl.h>
 #include "iscsictl.h"
@@ -55,7 +55,7 @@ conf_new(void)
 
        conf = calloc(1, sizeof(*conf));
        if (conf == NULL)
-               err(1, "calloc");
+               xo_err(1, "calloc");
 
        TAILQ_INIT(&conf->conf_targets);
 
@@ -83,7 +83,7 @@ target_new(struct conf *conf)
 
        targ = calloc(1, sizeof(*targ));
        if (targ == NULL)
-               err(1, "calloc");
+               xo_err(1, "calloc");
        targ->t_conf = conf;
        TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next);
 
@@ -110,12 +110,12 @@ default_initiator_name(void)
 
        name = calloc(1, namelen + 1);
        if (name == NULL)
-               err(1, "calloc");
+               xo_err(1, "calloc");
        strcpy(name, DEFAULT_IQN);
        error = gethostname(name + strlen(DEFAULT_IQN),
            namelen - strlen(DEFAULT_IQN));
        if (error != 0)
-               err(1, "gethostname");
+               xo_err(1, "gethostname");
 
        return (name);
 }
@@ -158,7 +158,7 @@ valid_iscsi_name(const char *name)
        int i;
 
        if (strlen(name) >= MAX_NAME_LEN) {
-               warnx("overlong name for \"%s\"; max length allowed "
+               xo_warnx("overlong name for \"%s\"; max length allowed "
                    "by iSCSI specification is %d characters",
                    name, MAX_NAME_LEN);
                return (false);
@@ -178,7 +178,7 @@ valid_iscsi_name(const char *name)
                                continue;
                        if (name[i] == '-' || name[i] == '.' || name[i] == ':')
                                continue;
-                       warnx("invalid character \"%c\" in iSCSI name "
+                       xo_warnx("invalid character \"%c\" in iSCSI name "
                            "\"%s\"; allowed characters are letters, digits, "
                            "'-', '.', and ':'", name[i], name);
                        break;
@@ -188,12 +188,12 @@ valid_iscsi_name(const char *name)
                 */
        } else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) {
                if (strlen(name) != strlen("eui.") + 16)
-                       warnx("invalid iSCSI name \"%s\"; the \"eui.\" "
+                       xo_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 "
+                               xo_warnx("invalid character \"%c\" in iSCSI "
                                    "name \"%s\"; allowed characters are 1-9 "
                                    "and A-F", name[i], name);
                                break;
@@ -201,19 +201,19 @@ valid_iscsi_name(const char *name)
                }
        } else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) {
                if (strlen(name) > strlen("naa.") + 32)
-                       warnx("invalid iSCSI name \"%s\"; the \"naa.\" "
+                       xo_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 "
+                               xo_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 "
+               xo_warnx("invalid iSCSI name \"%s\"; should start with "
                    "either \".iqn\", \"eui.\", or \"naa.\"",
                    name);
        }
@@ -231,26 +231,26 @@ conf_verify(struct conf *conf)
                        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\"",
+                       xo_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 "
+                       xo_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\"",
+                               xo_errx(1, "invalid target name \"%s\"",
                                    targ->t_name);
                }
                if (targ->t_protocol == PROTOCOL_UNSPECIFIED)
                        targ->t_protocol = PROTOCOL_ISCSI;
                if (targ->t_address == NULL)
-                       errx(1, "missing TargetAddress for target \"%s\"",
+                       xo_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\"",
+                       xo_errx(1, "invalid initiator name \"%s\"",
                            targ->t_initiator_name);
                if (targ->t_header_digest == DIGEST_UNSPECIFIED)
                        targ->t_header_digest = DIGEST_NONE;
@@ -268,19 +268,19 @@ conf_verify(struct conf *conf)
                }
                if (targ->t_auth_method == AUTH_METHOD_CHAP) {
                        if (targ->t_user == NULL) {
-                               errx(1, "missing chapIName for target \"%s\"",
+                               xo_errx(1, "missing chapIName for target 
\"%s\"",
                                    targ->t_nickname);
                        }
                        if (targ->t_secret == NULL)
-                               errx(1, "missing chapSecret for target \"%s\"",
+                               xo_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 "
+                                       xo_errx(1, "missing tgtChapName for "
                                            "target \"%s\"", targ->t_nickname);
                                if (targ->t_mutual_secret == NULL)
-                                       errx(1, "missing tgtChapSecret for "
+                                       xo_errx(1, "missing tgtChapSecret for "
                                            "target \"%s\"", targ->t_nickname);
                        }
                }
@@ -350,7 +350,7 @@ kernel_add(int iscsi_fd, const struct ta
        conf_from_target(&isa.isa_conf, targ);
        error = ioctl(iscsi_fd, ISCSISADD, &isa);
        if (error != 0)
-               warn("ISCSISADD");
+               xo_warn("ISCSISADD");
        return (error);
 }
 
@@ -365,7 +365,7 @@ kernel_modify(int iscsi_fd, unsigned int
        conf_from_target(&ism.ism_conf, targ);
        error = ioctl(iscsi_fd, ISCSISMODIFY, &ism);
        if (error != 0)
-               warn("ISCSISMODIFY");
+               xo_warn("ISCSISMODIFY");
        return (error);
 }
 
@@ -385,7 +385,7 @@ kernel_modify_some(int iscsi_fd, unsigne
                states = realloc(states,
                    nentries * sizeof(struct iscsi_session_state));
                if (states == NULL)
-                       err(1, "realloc");
+                       xo_err(1, "realloc");
 
                memset(&isl, 0, sizeof(isl));
                isl.isl_nentries = nentries;
@@ -399,7 +399,7 @@ kernel_modify_some(int iscsi_fd, unsigne
                break;
        }
        if (error != 0)
-               errx(1, "ISCSISLIST");
+               xo_errx(1, "ISCSISLIST");
 
        for (i = 0; i < isl.isl_nentries; i++) {
                state = &states[i];
@@ -408,7 +408,7 @@ kernel_modify_some(int iscsi_fd, unsigne
                        break;
        }
        if (i == isl.isl_nentries)
-               errx(1, "session-id %u not found", session_id);
+               xo_errx(1, "session-id %u not found", session_id);
 
        conf = &state->iss_conf;
 
@@ -427,7 +427,7 @@ kernel_modify_some(int iscsi_fd, unsigne
        memcpy(&ism.ism_conf, conf, sizeof(ism.ism_conf));
        error = ioctl(iscsi_fd, ISCSISMODIFY, &ism);
        if (error != 0)
-               warn("ISCSISMODIFY");
+               xo_warn("ISCSISMODIFY");
 }
 
 static int
@@ -440,7 +440,7 @@ kernel_remove(int iscsi_fd, const struct
        conf_from_target(&isr.isr_conf, targ);
        error = ioctl(iscsi_fd, ISCSISREMOVE, &isr);
        if (error != 0)
-               warn("ISCSISREMOVE");
+               xo_warn("ISCSISREMOVE");
        return (error);
 }
 
@@ -462,7 +462,7 @@ kernel_list(int iscsi_fd, const struct t
                states = realloc(states,
                    nentries * sizeof(struct iscsi_session_state));
                if (states == NULL)
-                       err(1, "realloc");
+                       xo_err(1, "realloc");
 
                memset(&isl, 0, sizeof(isl));
                isl.isl_nentries = nentries;
@@ -476,79 +476,117 @@ kernel_list(int iscsi_fd, const struct t
                break;
        }
        if (error != 0) {
-               warn("ISCSISLIST");
+               xo_warn("ISCSISLIST");
                return (error);
        }
 
        if (verbose != 0) {
+               xo_open_list("session");
                for (i = 0; i < isl.isl_nentries; i++) {
                        state = &states[i];
                        conf = &state->iss_conf;
 
-                       printf("Session ID:       %u\n", state->iss_id);
-                       printf("Initiator name:   %s\n", conf->isc_initiator);
-                       printf("Initiator portal: %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 portal:    %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",
+                       xo_open_instance("session");
+
+                       /*
+                        * Display-only modifier as this information
+                        * is also present within the 'session' container
+                        */
+                       xo_emit("{L:/%-18s}{V:sessionId/%u}\n",
+                           "Session ID:", state->iss_id);
+
+                       xo_open_container("initiator");
+                       xo_emit("{L:/%-18s}{V:name/%s}\n",
+                           "Initiator name:", conf->isc_initiator);
+                       xo_emit("{L:/%-18s}{V:portal/%s}\n",
+                           "Initiator portal:", conf->isc_initiator_addr);
+                       xo_emit("{L:/%-18s}{V:alias/%s}\n",
+                           "Initiator alias:", conf->isc_initiator_alias);
+                       xo_close_container("initiator");
+
+                       xo_open_container("target");
+                       xo_emit("{L:/%-18s}{V:name/%s}\n",
+                           "Target name:", conf->isc_target);
+                       xo_emit("{L:/%-18s}{V:portal/%s}\n",
+                           "Target portal:", conf->isc_target_addr);
+                       xo_emit("{L:/%-18s}{V:alias/%s}\n",
+                           "Target alias:", state->iss_target_alias);
+                       xo_close_container("target");
+
+                       xo_open_container("auth");
+                       xo_emit("{L:/%-18s}{V:user/%s}\n",
+                           "User:", conf->isc_user);
+                       xo_emit("{L:/%-18s}{V:secret/%s}\n",
+                           "Secret:", conf->isc_secret);
+                       xo_emit("{L:/%-18s}{V:mutualUser/%s}\n",
+                           "Mutual user:", conf->isc_mutual_user);
+                       xo_emit("{L:/%-18s}{V:mutualSecret/%s}\n",
+                           "Mutual secret:", conf->isc_mutual_secret);
+                       xo_close_container("auth");
+
+                       xo_emit("{L:/%-18s}{V:type/%s}\n",
+                           "Session type:",
                            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",
+                       xo_emit("{L:/%-18s}{V:state/%s}\n",
+                           "Session state:",
+                           state->iss_connected ? "Connected" : 
"Disconnected");
+                       xo_emit("{L:/%-18s}{V:failureReason/%s}\n",
+                           "Failure reason:", state->iss_reason);
+                       xo_emit("{L:/%-18s}{V:headerDigest/%s}\n",
+                           "Header digest:",
                            state->iss_header_digest == ISCSI_DIGEST_CRC32C ?
                            "CRC32C" : "None");
-                       printf("Data digest:      %s\n",
+                       xo_emit("{L:/%-18s}{V:dataDigest/%s}\n",
+                           "Data digest:",
                            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("Offload driver:   %s\n", state->iss_offload);
-                       printf("Device nodes:     ");
+                       xo_emit("{L:/%-18s}{V:dataSegmentLen/%d}\n",
+                           "DataSegmentLen:", 
state->iss_max_data_segment_length);
+                       xo_emit("{L:/%-18s}{V:immediateData/%s}\n",
+                           "ImmediateData:", state->iss_immediate_data ? "Yes" 
: "No");
+                       xo_emit("{L:/%-18s}{V:iSER/%s}\n",
+                           "iSER (RDMA):", conf->isc_iser ? "Yes" : "No");
+                       xo_emit("{L:/%-18s}{V:offloadDriver/%s}\n",
+                           "Offload driver:", state->iss_offload);
+                       xo_emit("{L:/%-18s}",
+                           "Device nodes:");
                        print_periphs(state->iss_id);
-                       printf("\n\n");
+                       xo_emit("\n\n");
+                       xo_close_instance("session");
                }
+               xo_close_list("session");
        } else {
-               printf("%-36s %-16s %s\n",
+               xo_emit("{T:/%-36s} {T:/%-16s} {T:/%s}\n",
                    "Target name", "Target portal", "State");
+
+               if (isl.isl_nentries != 0)
+                       xo_open_list("session");
                for (i = 0; i < isl.isl_nentries; i++) {
+
                        state = &states[i];
                        conf = &state->iss_conf;
 
-                       printf("%-36s %-16s ",
+                       xo_open_instance("session");
+                       xo_emit("{V:name/%-36s/%s} {V:portal/%-16s/%s} ",
                            conf->isc_target, conf->isc_target_addr);
 
                        if (state->iss_reason[0] != '\0') {
-                               printf("%s\n", state->iss_reason);
+                               xo_emit("{V:state/%s}\n", state->iss_reason);
                        } else {
                                if (conf->isc_discovery) {
-                                       printf("Discovery\n");
+                                       xo_emit("{V:state}\n", "Discovery");
                                } else if (state->iss_connected) {
-                                       printf("Connected: ");
+                                       xo_emit("{V:state}: ", "Connected");
                                        print_periphs(state->iss_id);
-                                       printf("\n");
+                                       xo_emit("\n");
                                } else {
-                                       printf("Disconnected\n");
+                                       xo_emit("{V:state}\n", "Disconnected");
                                }
                        }
+                       xo_close_instance("session");
                }
+               if (isl.isl_nentries != 0)
+                       xo_close_list("session");
        }
 
        return (0);
@@ -582,7 +620,7 @@ checked_strdup(const char *s)
 
        c = strdup(s);
        if (c == NULL)
-               err(1, "strdup");
+               xo_err(1, "strdup");
        return (c);
 }
 
@@ -600,6 +638,9 @@ main(int argc, char **argv)
        struct conf *conf;
        struct target *targ;
 
+       argc = xo_parse_args(argc, argv);
+       xo_open_container("iscsictl");
+
        while ((ch = getopt(argc, argv, "AMRLac:d:i:n:p:t:u:s:v")) != -1) {
                switch (ch) {
                case 'A':
@@ -626,11 +667,11 @@ main(int argc, char **argv)
                case 'i':
                        session_id = strtol(optarg, &end, 10);
                        if ((size_t)(end - optarg) != strlen(optarg))
-                               errx(1, "trailing characters after session-id");
+                               xo_errx(1, "trailing characters after 
session-id");
                        if (session_id < 0)
-                               errx(1, "session-id cannot be negative");
+                               xo_errx(1, "session-id cannot be negative");
                        if (session_id > UINT_MAX)
-                               errx(1, "session-id cannot be greater than %u",
+                               xo_errx(1, "session-id cannot be greater than 
%u",
                                    UINT_MAX);
                        break;
                case 'n':
@@ -663,7 +704,7 @@ main(int argc, char **argv)
        if (Aflag + Mflag + Rflag + Lflag == 0)
                Lflag = 1;
        if (Aflag + Mflag + Rflag + Lflag > 1)
-               errx(1, "at most one of -A, -M, -R, or -L may be specified");
+               xo_errx(1, "at most one of -A, -M, -R, or -L may be specified");
 
        /*
         * Note that we ignore unneccessary/inapplicable "-c" flag; so that
@@ -673,122 +714,122 @@ main(int argc, char **argv)
        if (Aflag != 0) {
                if (aflag != 0) {
                        if (portal != NULL)
-                               errx(1, "-a and -p and mutually exclusive");
+                               xo_errx(1, "-a and -p and mutually exclusive");
                        if (target != NULL)
-                               errx(1, "-a and -t and mutually exclusive");
+                               xo_errx(1, "-a and -t and mutually exclusive");
                        if (user != NULL)
-                               errx(1, "-a and -u and mutually exclusive");
+                               xo_errx(1, "-a and -u and mutually exclusive");
                        if (secret != NULL)
-                               errx(1, "-a and -s and mutually exclusive");
+                               xo_errx(1, "-a and -s and mutually exclusive");
                        if (nickname != NULL)
-                               errx(1, "-a and -n and mutually exclusive");
+                               xo_errx(1, "-a and -n and mutually exclusive");
                        if (discovery_host != NULL)
-                               errx(1, "-a and -d and mutually exclusive");
+                               xo_errx(1, "-a and -d and mutually exclusive");
                } else if (nickname != NULL) {
                        if (portal != NULL)
-                               errx(1, "-n and -p and mutually exclusive");
+                               xo_errx(1, "-n and -p and mutually exclusive");
                        if (target != NULL)
-                               errx(1, "-n and -t and mutually exclusive");
+                               xo_errx(1, "-n and -t and mutually exclusive");
                        if (user != NULL)
-                               errx(1, "-n and -u and mutually exclusive");
+                               xo_errx(1, "-n and -u and mutually exclusive");
                        if (secret != NULL)
-                               errx(1, "-n and -s and mutually exclusive");
+                               xo_errx(1, "-n and -s and mutually exclusive");
                        if (discovery_host != NULL)
-                               errx(1, "-n and -d and mutually exclusive");
+                               xo_errx(1, "-n and -d and mutually exclusive");
                } else if (discovery_host != NULL) {
                        if (portal != NULL)
-                               errx(1, "-d and -p and mutually exclusive");
+                               xo_errx(1, "-d and -p and mutually exclusive");
                        if (target != NULL)
-                               errx(1, "-d and -t and mutually exclusive");
+                               xo_errx(1, "-d and -t and mutually exclusive");
                } else {
                        if (target == NULL && portal == NULL)
-                               errx(1, "must specify -a, -n or -t/-p");
+                               xo_errx(1, "must specify -a, -n or -t/-p");
 
                        if (target != NULL && portal == NULL)
-                               errx(1, "-t must always be used with -p");
+                               xo_errx(1, "-t must always be used with -p");
                        if (portal != NULL && target == NULL)
-                               errx(1, "-p must always be used with -t");
+                               xo_errx(1, "-p must always be used with -t");
                }
 
                if (user != NULL && secret == NULL)
-                       errx(1, "-u must always be used with -s");
+                       xo_errx(1, "-u must always be used with -s");
                if (secret != NULL && user == NULL)
-                       errx(1, "-s must always be used with -u");
+                       xo_errx(1, "-s must always be used with -u");
 
                if (session_id != -1)
-                       errx(1, "-i cannot be used with -A");
+                       xo_errx(1, "-i cannot be used with -A");
                if (vflag != 0)
-                       errx(1, "-v cannot be used with -A");
+                       xo_errx(1, "-v cannot be used with -A");
 
        } else if (Mflag != 0) {
                if (session_id == -1)
-                       errx(1, "-M requires -i");
+                       xo_errx(1, "-M requires -i");
 
                if (discovery_host != NULL)
-                       errx(1, "-M and -d are mutually exclusive");
+                       xo_errx(1, "-M and -d are mutually exclusive");
                if (aflag != 0)
-                       errx(1, "-M and -a are mutually exclusive");
+                       xo_errx(1, "-M and -a are mutually exclusive");
                if (nickname != NULL) {
                        if (portal != NULL)
-                               errx(1, "-n and -p and mutually exclusive");
+                               xo_errx(1, "-n and -p and mutually exclusive");
                        if (target != NULL)
-                               errx(1, "-n and -t and mutually exclusive");
+                               xo_errx(1, "-n and -t and mutually exclusive");
                        if (user != NULL)
-                               errx(1, "-n and -u and mutually exclusive");
+                               xo_errx(1, "-n and -u and mutually exclusive");
                        if (secret != NULL)
-                               errx(1, "-n and -s and mutually exclusive");
+                               xo_errx(1, "-n and -s and mutually exclusive");
                }
 
                if (vflag != 0)
-                       errx(1, "-v cannot be used with -M");
+                       xo_errx(1, "-v cannot be used with -M");
 
        } else if (Rflag != 0) {
                if (user != NULL)
-                       errx(1, "-R and -u are mutually exclusive");
+                       xo_errx(1, "-R and -u are mutually exclusive");
                if (secret != NULL)
-                       errx(1, "-R and -s are mutually exclusive");
+                       xo_errx(1, "-R and -s are mutually exclusive");
                if (discovery_host != NULL)
-                       errx(1, "-R and -d are mutually exclusive");
+                       xo_errx(1, "-R and -d are mutually exclusive");
 
                if (aflag != 0) {
                        if (portal != NULL)
-                               errx(1, "-a and -p and mutually exclusive");
+                               xo_errx(1, "-a and -p and mutually exclusive");
                        if (target != NULL)
-                               errx(1, "-a and -t and mutually exclusive");
+                               xo_errx(1, "-a and -t and mutually exclusive");
                        if (nickname != NULL)
-                               errx(1, "-a and -n and mutually exclusive");
+                               xo_errx(1, "-a and -n and mutually exclusive");
                } else if (nickname != NULL) {
                        if (portal != NULL)
-                               errx(1, "-n and -p and mutually exclusive");
+                               xo_errx(1, "-n and -p and mutually exclusive");
                        if (target != NULL)
-                               errx(1, "-n and -t and mutually exclusive");
+                               xo_errx(1, "-n and -t and mutually exclusive");
                } else if (target == NULL && portal == NULL) {
-                       errx(1, "must specify either -a, -n, -t, or -p");
+                       xo_errx(1, "must specify either -a, -n, -t, or -p");
                }
 
                if (session_id != -1)
-                       errx(1, "-i cannot be used with -R");
+                       xo_errx(1, "-i cannot be used with -R");
                if (vflag != 0)
-                       errx(1, "-v cannot be used with -R");
+                       xo_errx(1, "-v cannot be used with -R");
 
        } else {
                assert(Lflag != 0);
 
                if (portal != NULL)
-                       errx(1, "-L and -p and mutually exclusive");
+                       xo_errx(1, "-L and -p and mutually exclusive");
                if (target != NULL)
-                       errx(1, "-L and -t and mutually exclusive");
+                       xo_errx(1, "-L and -t and mutually exclusive");
                if (user != NULL)
-                       errx(1, "-L and -u and mutually exclusive");
+                       xo_errx(1, "-L and -u and mutually exclusive");
                if (secret != NULL)
-                       errx(1, "-L and -s and mutually exclusive");
+                       xo_errx(1, "-L and -s and mutually exclusive");
                if (nickname != NULL)
-                       errx(1, "-L and -n and mutually exclusive");
+                       xo_errx(1, "-L and -n and mutually exclusive");
                if (discovery_host != NULL)
-                       errx(1, "-L and -d and mutually exclusive");
+                       xo_errx(1, "-L and -d and mutually exclusive");
 
                if (session_id != -1)
-                       errx(1, "-i cannot be used with -L");
+                       xo_errx(1, "-i cannot be used with -L");
        }
 
        iscsi_fd = open(ISCSI_PATH, O_RDWR);
@@ -801,7 +842,7 @@ main(int argc, char **argv)
                        errno = saved_errno;
        }
        if (iscsi_fd < 0)
-               err(1, "failed to open %s", ISCSI_PATH);
+               xo_err(1, "failed to open %s", ISCSI_PATH);
 
        if (Aflag != 0 && aflag != 0) {
                conf = conf_new_from_file(conf_path);
@@ -812,7 +853,7 @@ main(int argc, char **argv)
                conf = conf_new_from_file(conf_path);
                targ = target_find(conf, nickname);
                if (targ == NULL)
-                       errx(1, "target %s not found in %s",
+                       xo_errx(1, "target %s not found in %s",
                            nickname, conf_path);
 
                if (Aflag != 0)
@@ -829,7 +870,7 @@ main(int argc, char **argv)
        } else {
                if (Aflag != 0 && target != NULL) {
                        if (valid_iscsi_name(target) == false)
-                               errx(1, "invalid target name \"%s\"", target);
+                               xo_errx(1, "invalid target name \"%s\"", 
target);
                }
                conf = conf_new();
                targ = target_new(conf);
@@ -857,9 +898,12 @@ main(int argc, char **argv)
 
        error = close(iscsi_fd);
        if (error != 0)
-               err(1, "close");
+               xo_err(1, "close");
 
        if (failed > 0)
                return (1);
+
+       xo_close_container("iscsictl");
+       xo_finish();
        return (0);
 }

Modified: head/usr.bin/iscsictl/parse.y
==============================================================================
--- head/usr.bin/iscsictl/parse.y       Sun Apr 12 08:19:04 2015        
(r281460)
+++ head/usr.bin/iscsictl/parse.y       Sun Apr 12 09:36:50 2015        
(r281461)
@@ -34,12 +34,13 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <assert.h>
-#include <err.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
+#include <libxo/xo.h>
+
 #include "iscsictl.h"
 
 extern FILE *yyin;
@@ -77,7 +78,7 @@ targets:
 target:                STR OPENING_BRACKET target_entries CLOSING_BRACKET
        {
                if (target_find(conf, $1) != NULL)
-                       errx(1, "duplicated target %s", $1);
+                       xo_errx(1, "duplicated target %s", $1);
                target->t_nickname = $1;
                target = target_new(conf);
        }
@@ -127,7 +128,7 @@ target_entry:
 target_name:   TARGET_NAME EQUALS STR
        {
                if (target->t_name != NULL)
-                       errx(1, "duplicated TargetName at line %d", lineno);
+                       xo_errx(1, "duplicated TargetName at line %d", lineno);
                target->t_name = $3;
        }
        ;
@@ -135,7 +136,7 @@ target_name:        TARGET_NAME EQUALS STR
 target_address:        TARGET_ADDRESS EQUALS STR
        {
                if (target->t_address != NULL)
-                       errx(1, "duplicated TargetAddress at line %d", lineno);
+                       xo_errx(1, "duplicated TargetAddress at line %d", 
lineno);
                target->t_address = $3;
        }
        ;
@@ -143,7 +144,7 @@ target_address:     TARGET_ADDRESS EQUALS ST
 initiator_name:        INITIATOR_NAME EQUALS STR
        {
                if (target->t_initiator_name != NULL)
-                       errx(1, "duplicated InitiatorName at line %d", lineno);
+                       xo_errx(1, "duplicated InitiatorName at line %d", 
lineno);
                target->t_initiator_name = $3;
        }
        ;
@@ -151,7 +152,7 @@ initiator_name:     INITIATOR_NAME EQUALS ST
 initiator_address:     INITIATOR_ADDRESS EQUALS STR
        {
                if (target->t_initiator_address != NULL)
-                       errx(1, "duplicated InitiatorAddress at line %d", 
lineno);
+                       xo_errx(1, "duplicated InitiatorAddress at line %d", 
lineno);
                target->t_initiator_address = $3;
        }
        ;
@@ -159,7 +160,7 @@ initiator_address:  INITIATOR_ADDRESS EQU
 initiator_alias:       INITIATOR_ALIAS EQUALS STR
        {
                if (target->t_initiator_alias != NULL)
-                       errx(1, "duplicated InitiatorAlias at line %d", lineno);
+                       xo_errx(1, "duplicated InitiatorAlias at line %d", 
lineno);
                target->t_initiator_alias = $3;
        }
        ;
@@ -167,7 +168,7 @@ initiator_alias:    INITIATOR_ALIAS EQUALS 
 user:          USER EQUALS STR
        {
                if (target->t_user != NULL)
-                       errx(1, "duplicated chapIName at line %d", lineno);
+                       xo_errx(1, "duplicated chapIName at line %d", lineno);
                target->t_user = $3;
        }
        ;
@@ -175,7 +176,7 @@ user:               USER EQUALS STR
 secret:                SECRET EQUALS STR
        {
                if (target->t_secret != NULL)
-                       errx(1, "duplicated chapSecret at line %d", lineno);
+                       xo_errx(1, "duplicated chapSecret at line %d", lineno);
                target->t_secret = $3;
        }
        ;
@@ -183,7 +184,7 @@ secret:             SECRET EQUALS STR
 mutual_user:   MUTUAL_USER EQUALS STR
        {
                if (target->t_mutual_user != NULL)
-                       errx(1, "duplicated tgtChapName at line %d", lineno);
+                       xo_errx(1, "duplicated tgtChapName at line %d", lineno);
                target->t_mutual_user = $3;
        }
        ;
@@ -191,7 +192,7 @@ mutual_user:        MUTUAL_USER EQUALS STR
 mutual_secret: MUTUAL_SECRET EQUALS STR
        {
                if (target->t_mutual_secret != NULL)
-                       errx(1, "duplicated tgtChapSecret at line %d", lineno);
+                       xo_errx(1, "duplicated tgtChapSecret at line %d", 
lineno);
                target->t_mutual_secret = $3;
        }
        ;
@@ -199,13 +200,13 @@ mutual_secret:    MUTUAL_SECRET EQUALS STR
 auth_method:   AUTH_METHOD EQUALS STR
        {
                if (target->t_auth_method != AUTH_METHOD_UNSPECIFIED)
-                       errx(1, "duplicated AuthMethod at line %d", lineno);
+                       xo_errx(1, "duplicated AuthMethod at line %d", lineno);
                if (strcasecmp($3, "none") == 0)
                        target->t_auth_method = AUTH_METHOD_NONE;
                else if (strcasecmp($3, "chap") == 0)
                        target->t_auth_method = AUTH_METHOD_CHAP;
                else
-                       errx(1, "invalid AuthMethod at line %d; "
+                       xo_errx(1, "invalid AuthMethod at line %d; "
                            "must be either \"none\" or \"CHAP\"", lineno);
        }
        ;
@@ -213,13 +214,13 @@ auth_method:      AUTH_METHOD EQUALS STR
 header_digest: HEADER_DIGEST EQUALS STR
        {
                if (target->t_header_digest != DIGEST_UNSPECIFIED)
-                       errx(1, "duplicated HeaderDigest at line %d", lineno);
+                       xo_errx(1, "duplicated HeaderDigest at line %d", 
lineno);
                if (strcasecmp($3, "none") == 0)
                        target->t_header_digest = DIGEST_NONE;
                else if (strcasecmp($3, "CRC32C") == 0)
                        target->t_header_digest = DIGEST_CRC32C;
                else
-                       errx(1, "invalid HeaderDigest at line %d; "
+                       xo_errx(1, "invalid HeaderDigest at line %d; "
                            "must be either \"none\" or \"CRC32C\"", lineno);
        }
        ;
@@ -227,13 +228,13 @@ header_digest:    HEADER_DIGEST EQUALS STR
 data_digest:   DATA_DIGEST EQUALS STR
        {
                if (target->t_data_digest != DIGEST_UNSPECIFIED)
-                       errx(1, "duplicated DataDigest at line %d", lineno);
+                       xo_errx(1, "duplicated DataDigest at line %d", lineno);
                if (strcasecmp($3, "none") == 0)
                        target->t_data_digest = DIGEST_NONE;
                else if (strcasecmp($3, "CRC32C") == 0)
                        target->t_data_digest = DIGEST_CRC32C;
                else
-                       errx(1, "invalid DataDigest at line %d; "
+                       xo_errx(1, "invalid DataDigest at line %d; "
                            "must be either \"none\" or \"CRC32C\"", lineno);
        }
        ;
@@ -241,13 +242,13 @@ data_digest:      DATA_DIGEST EQUALS STR
 session_type:  SESSION_TYPE EQUALS STR
        {
                if (target->t_session_type != SESSION_TYPE_UNSPECIFIED)
-                       errx(1, "duplicated SessionType at line %d", lineno);
+                       xo_errx(1, "duplicated SessionType at line %d", lineno);
                if (strcasecmp($3, "normal") == 0)
                        target->t_session_type = SESSION_TYPE_NORMAL;
                else if (strcasecmp($3, "discovery") == 0)
                        target->t_session_type = SESSION_TYPE_DISCOVERY;
                else
-                       errx(1, "invalid SessionType at line %d; "
+                       xo_errx(1, "invalid SessionType at line %d; "
                            "must be either \"normal\" or \"discovery\"", 
lineno);
        }
        ;
@@ -255,7 +256,7 @@ session_type:       SESSION_TYPE EQUALS STR
 offload:       OFFLOAD EQUALS STR
        {
                if (target->t_offload != NULL)
-                       errx(1, "duplicated offload at line %d", lineno);
+                       xo_errx(1, "duplicated offload at line %d", lineno);
                target->t_offload = $3;
        }
        ;
@@ -263,20 +264,20 @@ offload:  OFFLOAD EQUALS STR
 protocol:      PROTOCOL EQUALS STR
        {
                if (target->t_protocol != PROTOCOL_UNSPECIFIED)
-                       errx(1, "duplicated protocol at line %d", lineno);
+                       xo_errx(1, "duplicated protocol at line %d", lineno);
                if (strcasecmp($3, "iscsi") == 0)
                        target->t_protocol = PROTOCOL_ISCSI;
                else if (strcasecmp($3, "iser") == 0)
                        target->t_protocol = PROTOCOL_ISER;
                else
-                       errx(1, "invalid protocol at line %d; "
+                       xo_errx(1, "invalid protocol at line %d; "
                            "must be either \"iscsi\" or \"iser\"", lineno);
        }
        ;
 
 ignored:       IGNORED EQUALS STR
        {
-               warnx("obsolete statement ignored at line %d", lineno);
+               xo_warnx("obsolete statement ignored at line %d", lineno);
        }
        ;
 
@@ -286,7 +287,7 @@ void
 yyerror(const char *str)
 {
 
-       errx(1, "error in configuration file at line %d near '%s': %s",
+       xo_errx(1, "error in configuration file at line %d near '%s': %s",
            lineno, yytext, str);
 }
 
@@ -298,19 +299,19 @@ check_perms(const char *path)
 
        error = stat(path, &sb);
        if (error != 0) {
-               warn("stat");
+               xo_warn("stat");
                return;
        }
        if (sb.st_mode & S_IWOTH) {
-               warnx("%s is world-writable", path);
+               xo_warnx("%s is world-writable", path);
        } else if (sb.st_mode & S_IROTH) {
-               warnx("%s is world-readable", path);
+               xo_warnx("%s is world-readable", path);
        } else if (sb.st_mode & S_IXOTH) {
                /*
                 * Ok, this one doesn't matter, but still do it,
                 * just for consistency.
                 */
-               warnx("%s is world-executable", path);
+               xo_warnx("%s is world-executable", path);
        }
 
        /*
@@ -328,7 +329,7 @@ conf_new_from_file(const char *path)
 
        yyin = fopen(path, "r");
        if (yyin == NULL)
-               err(1, "unable to open configuration file %s", path);
+               xo_err(1, "unable to open configuration file %s", path);
        check_perms(path);
        lineno = 1;
        yyrestart(yyin);

Modified: head/usr.bin/iscsictl/periphs.c
==============================================================================
--- head/usr.bin/iscsictl/periphs.c     Sun Apr 12 08:19:04 2015        
(r281460)
+++ head/usr.bin/iscsictl/periphs.c     Sun Apr 12 09:36:50 2015        
(r281461)
@@ -46,7 +46,6 @@ __FBSDID("$FreeBSD$");
 #include <inttypes.h>
 #include <limits.h>
 #include <fcntl.h>
-#include <err.h>
 
 #include <cam/cam.h>
 #include <cam/cam_debug.h>
@@ -58,6 +57,7 @@ __FBSDID("$FreeBSD$");
 #include <cam/scsi/smp_all.h>
 #include <cam/ata/ata_all.h>
 #include <camlib.h>
+#include <libxo/xo.h>
 
 #include "iscsictl.h"
 
@@ -67,10 +67,11 @@ print_periphs(int session_id)
        union ccb ccb;
        int bufsize, fd;
        unsigned int i;
-       int skip_bus, skip_device;
+       int have_path_id, skip_bus, skip_device;
+       path_id_t path_id;
 
        if ((fd = open(XPT_DEVICE, O_RDWR)) == -1) {
-               warn("couldn't open %s", XPT_DEVICE);
+               xo_warn("couldn't open %s", XPT_DEVICE);
                return;
        }
 
@@ -89,7 +90,7 @@ print_periphs(int session_id)
        ccb.cdm.match_buf_len = bufsize;
        ccb.cdm.matches = (struct dev_match_result *)malloc(bufsize);
        if (ccb.cdm.matches == NULL) {
-               warnx("can't malloc memory for matches");
+               xo_warnx("can't malloc memory for matches");
                close(fd);
                return;
        }
@@ -102,23 +103,27 @@ print_periphs(int session_id)
        ccb.cdm.num_patterns = 0;
        ccb.cdm.pattern_buf_len = 0;
 
+       path_id = -1; /* Make GCC happy. */
+       have_path_id = 0;
        skip_bus = 1;
        skip_device = 1;
 
+       xo_open_container("devices");
+       xo_open_list("lun");
        /*
         * We do the ioctl multiple times if necessary, in case there are
         * more than 100 nodes in the EDT.
         */
        do {
                if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
-                       warn("error sending CAMIOCOMMAND ioctl");
+                       xo_warn("error sending CAMIOCOMMAND ioctl");
                        break;
                }
 
                if ((ccb.ccb_h.status != CAM_REQ_CMP)
                 || ((ccb.cdm.status != CAM_DEV_MATCH_LAST)
                    && (ccb.cdm.status != CAM_DEV_MATCH_MORE))) {
-                       warnx("got CAM error %#x, CDM error %d\n",
+                       xo_warnx("got CAM error %#x, CDM error %d\n",
                              ccb.ccb_h.status, ccb.cdm.status);
                        break;
                }
@@ -141,7 +146,6 @@ print_periphs(int session_id)
                                        //printf("wrong unit, %d != %d\n", 
bus_result->unit_number, session_id);
                                        continue;
                                }
-
                                skip_bus = 0;
                        }
                        case DEV_MATCH_DEVICE: {
@@ -151,7 +155,6 @@ print_periphs(int session_id)
                                        continue;
 
                                skip_device = 0;
-
                                break;
                        }
                        case DEV_MATCH_PERIPH: {
@@ -166,9 +169,17 @@ print_periphs(int session_id)
                                if (strcmp(periph_result->periph_name, "pass") 
== 0)
                                        continue;
 
-                               fprintf(stdout, "%s%d ",
-                                       periph_result->periph_name,
-                                       periph_result->unit_number);
+                               xo_open_instance("lun");
+                               xo_emit("{e:lun/%d}", 
periph_result->target_lun);

*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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