iscsi: ccanize a little more, add silly simple test case.

ccan/iscsi/Makefile

 LIBS=
 CC=gcc
-CFLAGS=-g -O0 -Wall -W -I../.. "-D_U_=__attribute__((unused))"
+CFLAGS=-g -O0 -Wall -W -I../..
 LIBISCSI_OBJ = socket.o init.o login.o nop.o pdu.o discovery.o scsi-command.o scsi-lowlevel.o
 
 all: tools/iscsiclient

ccan/iscsi/_info

@@ -20,6 +20,7 @@ int main(int argc, char *argv[])
 		return 1;
 
 	if (strcmp(argv[1], "depends") == 0) {
+		printf("ccan/compiler\n");
 		return 0;
 	}
 

ccan/iscsi/discovery.c

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify
@@ -90,7 +90,7 @@ static void iscsi_free_discovery_addresses(struct iscsi_discovery_address *addre
 		free(addresses);
 		addresses = next;
 	}
-}	
+}
 
 int iscsi_process_text_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu, const unsigned char *hdr, int size)
 {
@@ -121,7 +121,7 @@ int iscsi_process_text_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu,
 			pdu->callback(iscsi, ISCSI_STATUS_ERROR, NULL, pdu->private_data);
 			iscsi_free_discovery_addresses(targets);
 			return -1;
-		} 
+		}
 
 		/* parse the strings */
 		if (!strncmp((char *)hdr, "TargetName=", 11)) {

ccan/iscsi/dlinklist.h

-/* 
+/*
    Unix SMB/CIFS implementation.
    some simple double linked list macros
 

ccan/iscsi/init.c

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify

ccan/iscsi/iscsi-private.h

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify
@@ -14,13 +14,11 @@
    You should have received a copy of the GNU General Public License
    along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
+#ifndef CCAN_ISCSI_PRIVATE_H
+#define CCAN_ISCSI_PRIVATE_H
 
 #include <stdint.h>
 
-#ifndef _U_
-#define _U_
-#endif
-
 #ifndef discard_const
 #define discard_const(ptr) ((void *)((intptr_t)(ptr)))
 #endif
@@ -141,3 +139,5 @@ int iscsi_process_logout_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pd
 int iscsi_process_scsi_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu, const unsigned char *hdr, int size);
 int iscsi_process_scsi_data_in(struct iscsi_context *iscsi, struct iscsi_pdu *pdu, const unsigned char *hdr, int size, int *is_finished);
 int iscsi_process_nop_out_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu, const unsigned char *hdr, int size);
+
+#endif /* CCAN_ISCSI_PRIVATE_H */

ccan/iscsi/iscsi.h

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify
@@ -14,6 +14,8 @@
    You should have received a copy of the GNU General Public License
    along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
+#ifndef CCAN_ISCSI_H
+#define CCAN_ISCSI_H
 
 struct iscsi_context;
 struct sockaddr;
@@ -103,7 +105,7 @@ enum icsi_status { ISCSI_STATUS_GOOD		=0,
 		   ISCSI_STATUS_ERROR		=0x0f000001 };
 
 
-/* 
+/*
  * Generic callback for completion of iscsi_*_async().
  * command_data depends on status.
  */
@@ -125,7 +127,7 @@ typedef void (*iscsi_command_cb)(struct iscsi_context *iscsi, int status, void *
  *    ISCSI_STATUS_GOOD     : Connection was successful. Command_data is NULL.
  *                            In this case the callback will be invoked a second time once the connection
  *                            is torn down.
- * 
+ *
  *    ISCSI_STATUS_ERROR    : Either failed to establish the connection, or an already established connection
  *                            has failed with an error.
  *
@@ -226,7 +228,7 @@ int iscsi_nop_out_async(struct iscsi_context *iscsi, iscsi_command_cb cb, unsign
  *
  * status :
  *   ISCSI_STATUS_GOOD the scsi command completed successfullt on the target.
- *   If this scsi command returns DATA-IN, that data is stored in an scsi_task structure 
+ *   If this scsi command returns DATA-IN, that data is stored in an scsi_task structure
  *   returned in the command_data parameter. This buffer will be automatically freed once the callback
  *   returns.
  *
@@ -259,4 +261,4 @@ int iscsi_write10_async(struct iscsi_context *iscsi, int lun, iscsi_command_cb c
 int iscsi_modesense6_async(struct iscsi_context *iscsi, int lun, iscsi_command_cb cb, int dbd, int pc, int page_code, int sub_page_code, unsigned char alloc_len, void *private_data);
 
 
-
+#endif /* CCAN_ISCSI_H */

ccan/iscsi/login.c

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify
@@ -20,6 +20,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <arpa/inet.h>
+#include <ccan/compiler/compiler.h>
 #include "iscsi.h"
 #include "iscsi-private.h"
 
@@ -212,7 +213,7 @@ int iscsi_process_login_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu
 	 *     some parameters.
 	 *     we should also do proper handshaking if the target is not yet prepared to transition
 	 *     to the next stage
-	 */ 
+	 */
 	status = ntohs(*(uint16_t *)&hdr[36]);
 	if (status != 0) {
 		pdu->callback(iscsi, ISCSI_STATUS_ERROR, NULL, pdu->private_data);
@@ -267,7 +268,7 @@ int iscsi_logout_async(struct iscsi_context *iscsi, iscsi_command_cb cb, void *p
 	return 0;
 }
 
-int iscsi_process_logout_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu, const unsigned char *hdr, int size _U_)
+int iscsi_process_logout_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu, const unsigned char *hdr, int size UNNEEDED_ATTRIBUTE)
 {
 	iscsi->is_loggedin = 0;
 	pdu->callback(iscsi, ISCSI_STATUS_GOOD, NULL, pdu->private_data);

ccan/iscsi/nop.c

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify

ccan/iscsi/pdu.c

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify
@@ -104,7 +104,7 @@ int iscsi_add_data(struct iscsi_data *data, unsigned char *dptr, int dsize, int
 		aligned = (aligned+3)&0xfffffffc;
 	}
 	buf = malloc(aligned);
-	if (buf == NULL) {	
+	if (buf == NULL) {
 		printf("failed to allocate buffer for %d bytes\n", len);
 		return -2;
 	}
@@ -125,9 +125,6 @@ int iscsi_add_data(struct iscsi_data *data, unsigned char *dptr, int dsize, int
 
 int iscsi_pdu_add_data(struct iscsi_context *iscsi, struct iscsi_pdu *pdu, unsigned char *dptr, int dsize)
 {
-	int len, aligned;
-	unsigned char *buf;
- 
 	if (pdu == NULL) {
 		printf("trying to add data to NULL pdu\n");
 		return -1;

ccan/iscsi/scsi-command.c

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify
@@ -50,16 +50,16 @@ static void iscsi_scsi_response_cb(struct iscsi_context *iscsi, int status, void
 
 	switch (status) {
 	case ISCSI_STATUS_CHECK_CONDITION:
-		scsi_cbdata->callback(iscsi, ISCSI_STATUS_CHECK_CONDITION, task, scsi_cbdata->private_data);	
+		scsi_cbdata->callback(iscsi, ISCSI_STATUS_CHECK_CONDITION, task, scsi_cbdata->private_data);
 		return;
 	
 
 	case ISCSI_STATUS_GOOD:
-		scsi_cbdata->callback(iscsi, ISCSI_STATUS_GOOD, task, scsi_cbdata->private_data);	
+		scsi_cbdata->callback(iscsi, ISCSI_STATUS_GOOD, task, scsi_cbdata->private_data);
 		return;
 	default:
 		printf("Cant handle  scsi status %d yet\n", status);
-		scsi_cbdata->callback(iscsi, ISCSI_STATUS_ERROR, task, scsi_cbdata->private_data);	
+		scsi_cbdata->callback(iscsi, ISCSI_STATUS_ERROR, task, scsi_cbdata->private_data);
 	}
 }
 
@@ -228,12 +228,12 @@ int iscsi_process_scsi_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu,
 		task->sense.key        = task->datain.data[4] & 0x0f;
 		task->sense.ascq       = ntohs(*(uint16_t *)&(task->datain.data[14]));
 
-		pdu->callback(iscsi, ISCSI_STATUS_CHECK_CONDITION, task, pdu->private_data);	
+		pdu->callback(iscsi, ISCSI_STATUS_CHECK_CONDITION, task, pdu->private_data);
 		break;
 	default:
 		printf("Unknown status :%d\n", status);
 
-		pdu->callback(iscsi, ISCSI_STATUS_ERROR, task, pdu->private_data);	
+		pdu->callback(iscsi, ISCSI_STATUS_ERROR, task, pdu->private_data);
 		return -1;
 	}
 

ccan/iscsi/scsi-lowlevel.c

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify
@@ -15,7 +15,7 @@
    along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
 /*
- * would be nice if this could grow into a full blown library for scsi to 
+ * would be nice if this could grow into a full blown library for scsi to
  * 1, build a CDB
  * 2, check how big a complete data-in structure needs to be
  * 3, unmarshall data-in into a real structure
@@ -29,6 +29,7 @@
 #include <strings.h>
 #include <stdint.h>
 #include <arpa/inet.h>
+#include <ccan/compiler/compiler.h>
 #include "scsi-lowlevel.h"
 #include "dlinklist.h"
 
@@ -44,7 +45,7 @@ void scsi_free_scsi_task(struct scsi_task *task)
 	free(task);
 }
 
-void *scsi_malloc(struct scsi_task *task, size_t size)
+static void *scsi_malloc(struct scsi_task *task, size_t size)
 {
 	struct scsi_allocated_memory *mem;
 
@@ -161,7 +162,7 @@ static struct scsi_reportluns_list *scsi_reportluns_datain_unmarshall(struct scs
 	}
 	
 	return list;
-}	
+}
 
 
 /*
@@ -199,7 +200,8 @@ struct scsi_task *scsi_cdb_readcapacity10(int lba, int pmi)
 /*
  * parse the data in blob and calcualte the size of a full readcapacity10 datain structure
  */
-static int scsi_readcapacity10_datain_getfullsize(struct scsi_task *task _U_)
+static int scsi_readcapacity10_datain_getfullsize(struct scsi_task *task
+						  UNNEEDED_ATTRIBUTE)
 {
 	return 8;
 }
@@ -282,7 +284,7 @@ static int scsi_inquiry_datain_getfullsize(struct scsi_task *task)
 /*
  * unmarshall the data in blob for inquiry into a structure
  */
-void *scsi_inquiry_datain_unmarshall(struct scsi_task *task)
+static void *scsi_inquiry_datain_unmarshall(struct scsi_task *task)
 {
 	struct scsi_inquiry_standard *inq;
 

ccan/iscsi/scsi-lowlevel.h

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify
@@ -14,10 +14,8 @@
    You should have received a copy of the GNU General Public License
    along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
-
-#ifndef _U_
-#define _U_
-#endif
+#ifndef CCAN_ISCSI_SCSI_LOWLEVEL_H
+#define CCAN_ISCSI_SCSI_LOWLEVEL_H
 
 #define SCSI_CDB_MAX_SIZE			16
 
@@ -165,7 +163,7 @@ struct scsi_inquiry_standard {
        char vendor_identification[8+1];
        char product_identification[16+1];
        char product_revision_level[4+1];
-}; 
+};
 
 struct scsi_task *scsi_cdb_inquiry(int evpd, int page_code, int alloc_len);
 
@@ -192,3 +190,4 @@ void *scsi_datain_unmarshall(struct scsi_task *task);
 struct scsi_task *scsi_cdb_read10(int lba, int xferlen, int blocksize);
 struct scsi_task *scsi_cdb_write10(int lba, int xferlen, int fua, int fuanv, int blocksize);
 
+#endif /* CCAN_ISCSI_SCSI_LOWLEVEL_H */

ccan/iscsi/socket.c

-/* 
+/*
    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
    
    This program is free software; you can redistribute it and/or modify
@@ -43,8 +43,11 @@ int iscsi_connect_async(struct iscsi_context *iscsi, const char *target, iscsi_c
 	int port = 3260;
 	char *str;
 	char *addr;
-	struct sockaddr_storage s;
-	struct sockaddr_in *sin = (struct sockaddr_in *)&s;
+	union {
+		struct sockaddr sa;
+		struct sockaddr_storage ss;
+		struct sockaddr_in sin;
+	} s;
 	int socksize;
 
 	if (iscsi == NULL) {
@@ -75,22 +78,22 @@ int iscsi_connect_async(struct iscsi_context *iscsi, const char *target, iscsi_c
 		str[0] = 0;
 	}
 
-	sin->sin_family = AF_INET;
-	sin->sin_port   = htons(port);
-	if (inet_pton(AF_INET, addr, &sin->sin_addr) != 1) {
+	s.sin.sin_family = AF_INET;
+	s.sin.sin_port   = htons(port);
+	if (inet_pton(AF_INET, addr, &s.sin.sin_addr) != 1) {
 		printf("failed to convert to ip address\n");
 		free(addr);
 		return -4;
 	}
 	free(addr);
 
-	switch (s.ss_family) {
+	switch (s.ss.ss_family) {
 	case AF_INET:
 		iscsi->fd = socket(AF_INET, SOCK_STREAM, 0);
 		socksize = sizeof(struct sockaddr_in);
 		break;
 	default:
-		printf("Unknown family :%d\n", s.ss_family);
+		printf("Unknown family :%d\n", s.ss.ss_family);
 		return -5;
 
 	}
@@ -106,13 +109,13 @@ int iscsi_connect_async(struct iscsi_context *iscsi, const char *target, iscsi_c
 
 	set_nonblocking(iscsi->fd);
 
-	if (connect(iscsi->fd, (struct sockaddr *)&s, socksize) != 0 && errno != EINPROGRESS) {
+	if (connect(iscsi->fd, &s.sa, socksize) != 0 && errno != EINPROGRESS) {
 		printf("Connect failed errno : %s (%d)\n", strerror(errno), errno);
 		return -7;
-	}		
+	}
 
 	return 0;
-}	    
+}
 
 int iscsi_disconnect(struct iscsi_context *iscsi)
 {
@@ -153,7 +156,7 @@ int iscsi_which_events(struct iscsi_context *iscsi)
 
 	if (iscsi->is_connected == 0) {
 		events |= POLLOUT;
-	}	
+	}
 
 	if (iscsi->outqueue) {
 		events |= POLLOUT;

ccan/iscsi/test/run.c

+#include <ccan/iscsi/iscsi.h>
+#include <ccan/iscsi/discovery.c>
+#include <ccan/iscsi/socket.c>
+#include <ccan/iscsi/init.c>
+#include <ccan/iscsi/pdu.c>
+#include <ccan/iscsi/scsi-lowlevel.c>
+#include <ccan/iscsi/nop.c>
+#include <ccan/iscsi/login.c>
+#include <ccan/iscsi/scsi-command.c>
+#include <ccan/tap/tap.h>
+
+int main(void)
+{
+	struct iscsi_context *iscsi;
+
+	plan_tests(2);
+
+	iscsi = iscsi_create_context("some name");
+	ok1(iscsi);
+	ok1(iscsi_destroy_context(iscsi) == 0);
+
+	/* This exits depending on whether all tests passed */
+	return exit_status();
+}