iscsiadm: fix boot code compile error

Rookie mistake. Forgot to git add the utils/fwparam_ibft/fwparam_sysfs.c
file for commit fe5cca505d6509dd67cefe85a96e0a4db6cedb4d

1 files changed, 484 insertions, 0 deletions

diff --git a/utils/fwparam_ibft/fwparam_sysfs.c b/utils/fwparam_ibft/fwparam_sysfs.c
new file mode 100644
index 0000000..f606f78
--- /dev/null
+++ b/utils/fwparam_ibft/fwparam_sysfs.c
@@ -0,0 +1,484 @@
+/*
+ * Copyright (C) IBM Corporation. 2007
+ * Author: Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
+ * Copyright (C) Red Hat, Inc.  All rights reserved. 2008 - 2010
+ * Copyright (C) Mike Christie 2008 - 2010
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define  _XOPEN_SOURCE 500
+#define _SVID_SOURCE
+#include <ftw.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "sysfs.h"
+#include "fw_context.h"
+#include "fwparam.h"
+#include "sysdeps.h"
+#include "iscsi_net_util.h"
+
+#define ISCSI_BOOT_MAX		255
+#define IBFT_SYSFS_ROOT		"/sys/firmware/ibft/"
+#define IBFT_SUBSYS		"ibft"
+
+#define ISCSI_LLD_ROOT		"/sys/firmware/"
+#define ISCSI_LLD_SUBSYS_PREFIX	"iscsi_boot"
+
+static char *target_list[ISCSI_BOOT_MAX];
+static char *nic_list[ISCSI_BOOT_MAX];
+static int nic_cnt;
+static int tgt_cnt;
+
+static int file_exist(const char *file)
+{
+	struct stat bootpath_stat;
+
+	return !stat(file, &bootpath_stat);
+}
+
+/*
+ * Finds the etherrnetX and targetX under the sysfs directory.
+ */
+static int find_sysfs_dirs(const char *fpath, const struct stat *sb,
+			   int tflag, struct FTW *ftw)
+{
+	if (tflag == FTW_D && (strstr(fpath + ftw->base, "target"))) {
+		if (tgt_cnt == ISCSI_BOOT_MAX) {
+			printf("Too many targets found in iSCSI boot data."
+			       "Max number of targets %d\n", ISCSI_BOOT_MAX);
+			return 0;
+		}
+		target_list[tgt_cnt++] = strdup(strstr(fpath, "target"));
+	}
+
+	if (tflag == FTW_D && (strstr(fpath + ftw->base, "ethernet"))) {
+		if (nic_cnt == ISCSI_BOOT_MAX) {
+			printf("Too many nics found in iSCSI boot data."
+			       "Max number of nics %d\n", ISCSI_BOOT_MAX);
+			return 0;
+		}
+		nic_list[nic_cnt++] = strdup(strstr(fpath, "ethernet"));
+	}
+
+	return 0;
+}
+ 
+static int get_iface_from_device(char *id, struct boot_context *context)
+{
+	char dev_dir[FILENAMESZ];
+	int rc = ENODEV;
+	DIR *dirfd;
+	struct dirent *dent;
+
+	memset(dev_dir, 0, FILENAMESZ);
+	snprintf(dev_dir, FILENAMESZ, IBFT_SYSFS_ROOT"/%s/device", id);
+
+	if (!file_exist(dev_dir))
+		return 0;
+
+	dirfd = opendir(dev_dir);
+	if (!dirfd)
+		return errno;
+
+	while ((dent = readdir(dirfd))) {
+		if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..") ||
+		    strncmp(dent->d_name, "net:", 4))
+			continue;
+
+		if (!strncmp(dent->d_name, "net:", 4)) {
+			if ((strlen(dent->d_name) - 4) >
+			    (sizeof(context->iface) - 1)) {
+				rc = EINVAL;
+				printf("Net device %s too big for iface "
+				       "buffer.\n", dent->d_name);
+				break;
+			}
+
+			if (sscanf(dent->d_name, "net:%s", context->iface) != 1)
+				rc = EINVAL;
+			rc = 0;
+			break;
+		} else {
+			printf("Could not read ethernet to net link.\n");
+			rc = EOPNOTSUPP;
+			break;
+		}
+	}
+
+	closedir(dirfd);
+
+	if (rc != ENODEV)
+		return rc;
+
+	/* If not found try again with newer kernel networkdev sysfs layout */
+	strlcat(dev_dir, "/net", FILENAMESZ);
+
+	if (!file_exist(dev_dir))
+		return rc;
+
+	dirfd = opendir(dev_dir);
+	if (!dirfd)
+		return errno;
+
+	while ((dent = readdir(dirfd))) {
+		if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
+			continue;
+
+		/* Take the first "regular" directory entry */
+		if (strlen(dent->d_name) > (sizeof(context->iface) - 1)) {
+			rc = EINVAL;
+			printf("Net device %s too big for iface buffer.\n",
+			       dent->d_name);
+			break;
+		}
+
+		strcpy(context->iface, dent->d_name);
+		rc = 0;
+		break;
+	}
+
+	closedir(dirfd);
+	return rc;
+}
+
+/*
+ * Routines to fill in the context values.
+ */
+static int fill_nic_context(char *subsys, char *id,
+			    struct boot_context *context)
+{
+	int rc;
+
+	rc = sysfs_get_str(id, subsys, "mac", context->mac,
+			   sizeof(context->mac));
+	if (rc)
+		return rc;
+
+	/*
+	 * Some offload cards like bnx2i use different MACs for the net and
+	 * iscsi functions, so we have to follow the sysfs links.
+	 *
+	 * Other ibft implementations may not be tied to a pci function,
+	 * so there will not be any device/net link, so we drop down to
+	 * the MAC matching.
+	 *
+	 * And finally, some cards like be2iscsi and qla4xxx do not have
+	 * any linux network subsys representation. These hosts will
+	 * not have the ibft subsys. Instead the subsys is the scsi host
+	 * number.
+	 */
+	if (!strcmp(IBFT_SUBSYS, subsys)) {
+		rc = get_iface_from_device(id, context);
+		if (rc) {
+			rc = net_get_netdev_from_hwaddress(context->mac,
+							   context->iface);
+			if (rc)
+				return rc;
+		}
+	} else
+		strlcpy(context->scsi_host_name, subsys,
+			sizeof(context->scsi_host_name));
+
+	sysfs_get_str(id, subsys, "ip-addr", context->ipaddr,
+		      sizeof(context->ipaddr));
+	sysfs_get_str(id, subsys, "vlan", context->vlan,
+		      sizeof(context->vlan));
+	sysfs_get_str(id, subsys, "subnet-mask", context->mask,
+		      sizeof(context->mask));
+	sysfs_get_str(id, subsys, "gateway", context->gateway,
+		      sizeof(context->gateway));
+	sysfs_get_str(id, subsys, "primary-dns", context->primary_dns,
+		      sizeof(context->primary_dns));
+	sysfs_get_str(id, subsys, "secondary-dns", context->secondary_dns,
+		      sizeof(context->secondary_dns));
+	sysfs_get_str(id, subsys, "dhcp", context->dhcp,
+		      sizeof(context->dhcp));
+	return 0;
+}
+
+static void fill_initiator_context(char *subsys, struct boot_context *context)
+{
+	sysfs_get_str("initiator", subsys, "initiator-name",
+		      context->initiatorname,
+		      sizeof(context->initiatorname));
+	sysfs_get_str("initiator", subsys, "isid", context->isid,
+		      sizeof(context->isid));
+}
+static int fill_tgt_context(char *subsys, char *id,
+			    struct boot_context *context)
+{
+	int rc;
+
+	rc = sysfs_get_str(id, subsys, "target-name", context->targetname,
+			   sizeof(context->targetname));
+	if (rc)
+		return rc;
+
+	rc = sysfs_get_str(id, subsys, "ip-addr", context->target_ipaddr,
+			   sizeof(context->target_ipaddr));
+	if (rc)
+		return rc;
+
+	/*
+	 * We can live without the rest of they do not exist. If we
+	 * failed to get them we will figure it out when we login.
+	 */
+	if (sysfs_get_int(id, subsys, "port", &context->target_port))
+		context->target_port = ISCSI_LISTEN_PORT;
+
+	sysfs_get_str(id, subsys, "lun", context->lun,
+		      sizeof(context->lun));
+	sysfs_get_str(id, subsys, "chap-name", context->chap_name,
+		      sizeof(context->chap_name));
+	sysfs_get_str(id, subsys, "chap-secret", context->chap_password,
+		      sizeof(context->chap_password));
+	sysfs_get_str(id, subsys, "rev-chap-name", context->chap_name_in,
+		      sizeof(context->chap_name_in));
+	sysfs_get_str(id, subsys, "rev-chap-name-secret",
+		      context->chap_password_in,
+		      sizeof(context->chap_password_in));
+	return 0;
+}
+
+#define IBFT_SYSFS_FLAG_FW_SEL_BOOT 2
+
+static int find_boot_flag(char *subsys, char *list[], ssize_t size,
+			  int *boot_idx)
+{
+	int rc = ENODEV;
+	int i, flag = 0;
+
+	for (i = 0; i < size; i++, flag = -1) {
+		rc = sysfs_get_int(list[i], subsys, "flags", &flag);
+		if (rc)
+			continue;
+
+		if (flag & IBFT_SYSFS_FLAG_FW_SEL_BOOT) {
+			*boot_idx = i;
+			rc = 0;
+			break;
+		}
+		rc = ENODEV;
+		flag = 0;
+
+	}
+
+	return rc;
+}
+
+static void deallocate_lists(void)
+{
+	int i;
+
+	for (i = 0; i < nic_cnt; i++)
+		free(nic_list[i]);
+
+	nic_cnt = 0;
+	for (i = 0; i < tgt_cnt; i++)
+		free(target_list[i]);
+
+	tgt_cnt = 0;
+
+}
+
+static int get_boot_info(struct boot_context *context, char *rootdir,
+			 char *subsys)
+{
+	char initiator_dir[FILENAMESZ];
+	int rc = ENODEV;
+	int nic_idx = -1, tgt_idx = -1;
+
+	memset(&initiator_dir, 0 , FILENAMESZ);
+	snprintf(initiator_dir, FILENAMESZ, "%sinitiator", rootdir);
+
+	nic_cnt = 0;
+	tgt_cnt = 0;
+	if (file_exist(initiator_dir)) {
+		/* Find the target's and the ethernet's */
+		rc = nftw(rootdir, find_sysfs_dirs, 20, 1);
+
+		/* Find wihch target and which ethernet have
+		the boot flag set. */
+		rc = find_boot_flag(subsys, nic_list, nic_cnt, &nic_idx);
+		if (rc)
+			goto free;
+
+		rc = find_boot_flag(subsys, target_list, tgt_cnt, &tgt_idx);
+		if (rc)
+			goto free;
+
+		/* Fill in the context values */
+		rc = fill_nic_context(subsys, nic_list[nic_idx], context);
+		rc |= fill_tgt_context(subsys, target_list[tgt_idx], context);
+		fill_initiator_context(subsys, context);
+	}
+free:
+	deallocate_lists();
+	return rc;
+}
+
+int fwparam_sysfs_boot_info(struct boot_context *context)
+{
+	struct dirent *dent;
+	DIR *dirfd;
+	int rc = 0;
+
+	if (!get_boot_info(context, IBFT_SYSFS_ROOT, IBFT_SUBSYS))
+		return 0;
+	/*
+	 * We could have multiple iscsi llds and each lld could have
+	 * multiple targets/ethernet ports
+	 */
+	dirfd = opendir(ISCSI_LLD_ROOT);
+	if (!dirfd)
+		return errno;
+
+	while ((dent = readdir(dirfd))) {
+		char lld_root[FILENAMESZ];
+
+		memset(&lld_root, 0 , FILENAMESZ);
+
+		if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
+			continue;
+
+		if (strncmp(dent->d_name, ISCSI_LLD_SUBSYS_PREFIX, 10))
+			continue;
+
+		snprintf(lld_root, FILENAMESZ, ISCSI_LLD_ROOT"%s",
+			 dent->d_name);
+		if (!get_boot_info(context, lld_root, dent->d_name))
+			goto done;
+	}
+	rc = ENODEV;
+done:
+	closedir(dirfd);
+	return rc;
+}
+
+static int get_targets(struct list_head *list, char *rootdir, char *subsys)
+{
+	struct boot_context *context;
+	int rc = 0, i, nic_idx, nic;
+	char initiator_dir[FILENAMESZ];
+
+	memset(&initiator_dir, 0 , FILENAMESZ);
+	snprintf(initiator_dir, FILENAMESZ, "%sinitiator", rootdir);
+
+	if (!file_exist(initiator_dir))
+		return ENODEV;
+
+	nic_cnt = 0;
+	tgt_cnt = 0;
+
+	/* Find the target's and the ethernet's */
+	nftw(rootdir, find_sysfs_dirs, 20, 1);
+	for (i = 0; i < tgt_cnt; i++) {
+		context = calloc(1, sizeof(*context));
+		if (!context) {
+			rc = ENOMEM;
+			break;
+		}
+
+		rc = fill_tgt_context(subsys, target_list[i], context);
+		if (rc)
+			break;
+
+		rc = sysfs_get_int(target_list[i], subsys, "nic-assoc",
+				   &nic_idx);
+		if (rc)
+			break;
+
+		for (nic = 0; nic < nic_cnt; nic++) {
+			int id;
+
+			rc = sysfs_get_int(nic_list[nic], subsys, "index",
+					   &id);
+			if (!rc && (id == nic_idx))
+				break;
+		}
+
+		if (nic == nic_cnt) {
+			printf("Invalid nic-assoc of %d. Max id %d.\n",
+			       nic_idx, nic_cnt);
+			break;
+		}
+
+		rc = fill_nic_context(subsys, nic_list[nic], context);
+		if (rc)
+			break;
+
+		fill_initiator_context(subsys, context);
+		list_add_tail(&context->list, list);
+	}
+
+	if (rc) {
+		if (context)
+			free(context);
+		fw_free_targets(list);
+	}
+
+	deallocate_lists();
+	return rc;
+}
+
+int fwparam_sysfs_get_targets(struct list_head *list)
+{
+	struct dirent *dent;
+	DIR *dirfd;
+	int rc = 0;
+
+	/* ibft only has one instance */
+	get_targets(list, IBFT_SYSFS_ROOT, IBFT_SUBSYS);
+	/*
+	 * We could have multiple iscsi llds and each lld could have
+	 * multiple targets/ethernet ports
+	 */
+	dirfd = opendir(ISCSI_LLD_ROOT);
+	if (!dirfd) {
+		rc = errno;
+		goto done;
+	}
+
+	while ((dent = readdir(dirfd))) {
+		char lld_root[FILENAMESZ];
+
+		memset(&lld_root, 0 , FILENAMESZ);
+
+		if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
+			continue;
+
+		if (strncmp(dent->d_name, ISCSI_LLD_SUBSYS_PREFIX, 10))
+			continue;
+
+		snprintf(lld_root, FILENAMESZ, ISCSI_LLD_ROOT"%s",
+			 dent->d_name);
+		get_targets(list, lld_root, dent->d_name);
+	}
+	closedir(dirfd);
+done:
+	if (!rc && list_empty(list))
+		rc = ENODEV;
+	if (rc)
+		fw_free_targets(list);
+	return rc;
+}