1 files changed, 50 insertions, 149 deletions

diff --git a/block/cmd-filter.c b/block/cmd-filter.c
index eec4404fd35..228b6447e89 100644
--- a/block/cmd-filter.c
+++ b/block/cmd-filter.c
@@ -20,15 +20,14 @@
 #include <linux/list.h>
 #include <linux/genhd.h>
 #include <linux/spinlock.h>
-#include <linux/parser.h>
 #include <linux/capability.h>
 #include <linux/bitops.h>
 
 #include <scsi/scsi.h>
 #include <linux/cdrom.h>
 
-int blk_cmd_filter_verify_command(struct blk_scsi_cmd_filter *filter,
-				  unsigned char *cmd, mode_t *f_mode)
+int blk_verify_command(struct blk_cmd_filter *filter,
+		       unsigned char *cmd, int has_write_perm)
 {
 	/* root can do any command. */
 	if (capable(CAP_SYS_RAWIO))
@@ -43,34 +42,15 @@ int blk_cmd_filter_verify_command(struct blk_scsi_cmd_filter *filter,
 		return 0;
 
 	/* Write-safe commands require a writable open */
-	if (test_bit(cmd[0], filter->write_ok) && (*f_mode & FMODE_WRITE))
+	if (test_bit(cmd[0], filter->write_ok) && has_write_perm)
 		return 0;
 
 	return -EPERM;
 }
-EXPORT_SYMBOL(blk_cmd_filter_verify_command);
-
-int blk_verify_command(struct file *file, unsigned char *cmd)
-{
-	struct gendisk *disk;
-	struct inode *inode;
-
-	if (!file)
-		return -EINVAL;
-
-	inode = file->f_dentry->d_inode;
-	if (!inode)
-		return -EINVAL;
-
-	disk = inode->i_bdev->bd_disk;
-
-	return blk_cmd_filter_verify_command(&disk->cmd_filter,
-						 cmd, &file->f_mode);
-}
 EXPORT_SYMBOL(blk_verify_command);
 
 /* and now, the sysfs stuff */
-static ssize_t rcf_cmds_show(struct blk_scsi_cmd_filter *filter, char *page,
+static ssize_t rcf_cmds_show(struct blk_cmd_filter *filter, char *page,
 			     int rw)
 {
 	char *npage = page;
@@ -84,8 +64,7 @@ static ssize_t rcf_cmds_show(struct blk_scsi_cmd_filter *filter, char *page,
 
 	for (i = 0; i < BLK_SCSI_MAX_CMDS; i++) {
 		if (test_bit(i, okbits)) {
-			sprintf(npage, "%02x", i);
-			npage += 2;
+			npage += sprintf(npage, "0x%02x", i);
 			if (i < BLK_SCSI_MAX_CMDS - 1)
 				sprintf(npage++, " ");
 		}
@@ -97,57 +76,65 @@ static ssize_t rcf_cmds_show(struct blk_scsi_cmd_filter *filter, char *page,
 	return npage - page;
 }
 
-static ssize_t rcf_readcmds_show(struct blk_scsi_cmd_filter *filter, char *page)
+static ssize_t rcf_readcmds_show(struct blk_cmd_filter *filter, char *page)
 {
 	return rcf_cmds_show(filter, page, READ);
 }
 
-static ssize_t rcf_writecmds_show(struct blk_scsi_cmd_filter *filter,
+static ssize_t rcf_writecmds_show(struct blk_cmd_filter *filter,
 				 char *page)
 {
 	return rcf_cmds_show(filter, page, WRITE);
 }
 
-static ssize_t rcf_cmds_store(struct blk_scsi_cmd_filter *filter,
+static ssize_t rcf_cmds_store(struct blk_cmd_filter *filter,
 			      const char *page, size_t count, int rw)
 {
-	ssize_t ret = 0;
 	unsigned long okbits[BLK_SCSI_CMD_PER_LONG], *target_okbits;
-	int cmd, status, len;
-	substring_t ss;
-
-	memset(&okbits, 0, sizeof(okbits));
-
-	for (len = strlen(page); len > 0; len -= 3) {
-		if (len < 2)
-			break;
-		ss.from = (char *) page + ret;
-		ss.to = (char *) page + ret + 2;
-		ret += 3;
-		status = match_hex(&ss, &cmd);
+	int cmd, set;
+	char *p, *status;
+
+	if (rw == READ) {
+		memcpy(&okbits, filter->read_ok, sizeof(okbits));
+		target_okbits = filter->read_ok;
+	} else {
+		memcpy(&okbits, filter->write_ok, sizeof(okbits));
+		target_okbits = filter->write_ok;
+	}
+
+	while ((p = strsep((char **)&page, " ")) != NULL) {
+		set = 1;
+
+		if (p[0] == '+') {
+			p++;
+		} else if (p[0] == '-') {
+			set = 0;
+			p++;
+		}
+
+		cmd = simple_strtol(p, &status, 16);
+
 		/* either of these cases means invalid input, so do nothing. */
-		if (status || cmd >= BLK_SCSI_MAX_CMDS)
+		if ((status == p) || cmd >= BLK_SCSI_MAX_CMDS)
 			return -EINVAL;
 
-		__set_bit(cmd, okbits);
+		if (set)
+			__set_bit(cmd, okbits);
+		else
+			__clear_bit(cmd, okbits);
 	}
 
-	if (rw == READ)
-		target_okbits = filter->read_ok;
-	else
-		target_okbits = filter->write_ok;
-
-	memmove(target_okbits, okbits, sizeof(okbits));
+	memcpy(target_okbits, okbits, sizeof(okbits));
 	return count;
 }
 
-static ssize_t rcf_readcmds_store(struct blk_scsi_cmd_filter *filter,
+static ssize_t rcf_readcmds_store(struct blk_cmd_filter *filter,
 				  const char *page, size_t count)
 {
 	return rcf_cmds_store(filter, page, count, READ);
 }
 
-static ssize_t rcf_writecmds_store(struct blk_scsi_cmd_filter *filter,
+static ssize_t rcf_writecmds_store(struct blk_cmd_filter *filter,
 				   const char *page, size_t count)
 {
 	return rcf_cmds_store(filter, page, count, WRITE);
@@ -155,8 +142,8 @@ static ssize_t rcf_writecmds_store(struct blk_scsi_cmd_filter *filter,
 
 struct rcf_sysfs_entry {
 	struct attribute attr;
-	ssize_t (*show)(struct blk_scsi_cmd_filter *, char *);
-	ssize_t (*store)(struct blk_scsi_cmd_filter *, const char *, size_t);
+	ssize_t (*show)(struct blk_cmd_filter *, char *);
+	ssize_t (*store)(struct blk_cmd_filter *, const char *, size_t);
 };
 
 static struct rcf_sysfs_entry rcf_readcmds_entry = {
@@ -183,9 +170,9 @@ static ssize_t
 rcf_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
 {
 	struct rcf_sysfs_entry *entry = to_rcf(attr);
-	struct blk_scsi_cmd_filter *filter;
+	struct blk_cmd_filter *filter;
 
-	filter = container_of(kobj, struct blk_scsi_cmd_filter, kobj);
+	filter = container_of(kobj, struct blk_cmd_filter, kobj);
 	if (entry->show)
 		return entry->show(filter, page);
 
@@ -197,7 +184,7 @@ rcf_attr_store(struct kobject *kobj, struct attribute *attr,
 			const char *page, size_t length)
 {
 	struct rcf_sysfs_entry *entry = to_rcf(attr);
-	struct blk_scsi_cmd_filter *filter;
+	struct blk_cmd_filter *filter;
 
 	if (!capable(CAP_SYS_RAWIO))
 		return -EPERM;
@@ -205,7 +192,7 @@ rcf_attr_store(struct kobject *kobj, struct attribute *attr,
 	if (!entry->store)
 		return -EINVAL;
 
-	filter = container_of(kobj, struct blk_scsi_cmd_filter, kobj);
+	filter = container_of(kobj, struct blk_cmd_filter, kobj);
 	return entry->store(filter, page, length);
 }
 
@@ -219,116 +206,30 @@ static struct kobj_type rcf_ktype = {
 	.default_attrs = default_attrs,
 };
 
-#ifndef MAINTENANCE_IN_CMD
-#define MAINTENANCE_IN_CMD 0xa3
-#endif
-
-static void rcf_set_defaults(struct blk_scsi_cmd_filter *filter)
-{
-	/* Basic read-only commands */
-	__set_bit(TEST_UNIT_READY, filter->read_ok);
-	__set_bit(REQUEST_SENSE, filter->read_ok);
-	__set_bit(READ_6, filter->read_ok);
-	__set_bit(READ_10, filter->read_ok);
-	__set_bit(READ_12, filter->read_ok);
-	__set_bit(READ_16, filter->read_ok);
-	__set_bit(READ_BUFFER, filter->read_ok);
-	__set_bit(READ_DEFECT_DATA, filter->read_ok);
-	__set_bit(READ_CAPACITY, filter->read_ok);
-	__set_bit(READ_LONG, filter->read_ok);
-	__set_bit(INQUIRY, filter->read_ok);
-	__set_bit(MODE_SENSE, filter->read_ok);
-	__set_bit(MODE_SENSE_10, filter->read_ok);
-	__set_bit(LOG_SENSE, filter->read_ok);
-	__set_bit(START_STOP, filter->read_ok);
-	__set_bit(GPCMD_VERIFY_10, filter->read_ok);
-	__set_bit(VERIFY_16, filter->read_ok);
-	__set_bit(REPORT_LUNS, filter->read_ok);
-	__set_bit(SERVICE_ACTION_IN, filter->read_ok);
-	__set_bit(RECEIVE_DIAGNOSTIC, filter->read_ok);
-	__set_bit(MAINTENANCE_IN_CMD, filter->read_ok);
-	__set_bit(GPCMD_READ_BUFFER_CAPACITY, filter->read_ok);
-
-	/* Audio CD commands */
-	__set_bit(GPCMD_PLAY_CD, filter->read_ok);
-	__set_bit(GPCMD_PLAY_AUDIO_10, filter->read_ok);
-	__set_bit(GPCMD_PLAY_AUDIO_MSF, filter->read_ok);
-	__set_bit(GPCMD_PLAY_AUDIO_TI, filter->read_ok);
-	__set_bit(GPCMD_PAUSE_RESUME, filter->read_ok);
-
-	/* CD/DVD data reading */
-	__set_bit(GPCMD_READ_CD, filter->read_ok);
-	__set_bit(GPCMD_READ_CD_MSF, filter->read_ok);
-	__set_bit(GPCMD_READ_DISC_INFO, filter->read_ok);
-	__set_bit(GPCMD_READ_CDVD_CAPACITY, filter->read_ok);
-	__set_bit(GPCMD_READ_DVD_STRUCTURE, filter->read_ok);
-	__set_bit(GPCMD_READ_HEADER, filter->read_ok);
-	__set_bit(GPCMD_READ_TRACK_RZONE_INFO, filter->read_ok);
-	__set_bit(GPCMD_READ_SUBCHANNEL, filter->read_ok);
-	__set_bit(GPCMD_READ_TOC_PMA_ATIP, filter->read_ok);
-	__set_bit(GPCMD_REPORT_KEY, filter->read_ok);
-	__set_bit(GPCMD_SCAN, filter->read_ok);
-	__set_bit(GPCMD_GET_CONFIGURATION, filter->read_ok);
-	__set_bit(GPCMD_READ_FORMAT_CAPACITIES, filter->read_ok);
-	__set_bit(GPCMD_GET_EVENT_STATUS_NOTIFICATION, filter->read_ok);
-	__set_bit(GPCMD_GET_PERFORMANCE, filter->read_ok);
-	__set_bit(GPCMD_SEEK, filter->read_ok);
-	__set_bit(GPCMD_STOP_PLAY_SCAN, filter->read_ok);
-
-	/* Basic writing commands */
-	__set_bit(WRITE_6, filter->write_ok);
-	__set_bit(WRITE_10, filter->write_ok);
-	__set_bit(WRITE_VERIFY, filter->write_ok);
-	__set_bit(WRITE_12, filter->write_ok);
-	__set_bit(WRITE_VERIFY_12, filter->write_ok);
-	__set_bit(WRITE_16, filter->write_ok);
-	__set_bit(WRITE_LONG, filter->write_ok);
-	__set_bit(WRITE_LONG_2, filter->write_ok);
-	__set_bit(ERASE, filter->write_ok);
-	__set_bit(GPCMD_MODE_SELECT_10, filter->write_ok);
-	__set_bit(MODE_SELECT, filter->write_ok);
-	__set_bit(LOG_SELECT, filter->write_ok);
-	__set_bit(GPCMD_BLANK, filter->write_ok);
-	__set_bit(GPCMD_CLOSE_TRACK, filter->write_ok);
-	__set_bit(GPCMD_FLUSH_CACHE, filter->write_ok);
-	__set_bit(GPCMD_FORMAT_UNIT, filter->write_ok);
-	__set_bit(GPCMD_REPAIR_RZONE_TRACK, filter->write_ok);
-	__set_bit(GPCMD_RESERVE_RZONE_TRACK, filter->write_ok);
-	__set_bit(GPCMD_SEND_DVD_STRUCTURE, filter->write_ok);
-	__set_bit(GPCMD_SEND_EVENT, filter->write_ok);
-	__set_bit(GPCMD_SEND_KEY, filter->write_ok);
-	__set_bit(GPCMD_SEND_OPC, filter->write_ok);
-	__set_bit(GPCMD_SEND_CUE_SHEET, filter->write_ok);
-	__set_bit(GPCMD_SET_SPEED, filter->write_ok);
-	__set_bit(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL, filter->write_ok);
-	__set_bit(GPCMD_LOAD_UNLOAD, filter->write_ok);
-	__set_bit(GPCMD_SET_STREAMING, filter->write_ok);
-}
-
 int blk_register_filter(struct gendisk *disk)
 {
 	int ret;
-	struct blk_scsi_cmd_filter *filter = &disk->cmd_filter;
+	struct blk_cmd_filter *filter = &disk->queue->cmd_filter;
 	struct kobject *parent = kobject_get(disk->holder_dir->parent);
 
 	if (!parent)
 		return -ENODEV;
 
 	ret = kobject_init_and_add(&filter->kobj, &rcf_ktype, parent,
-				 "%s", "cmd_filter");
+				   "%s", "cmd_filter");
 
 	if (ret < 0)
 		return ret;
 
-	rcf_set_defaults(filter);
 	return 0;
 }
+EXPORT_SYMBOL(blk_register_filter);
 
 void blk_unregister_filter(struct gendisk *disk)
 {
-	struct blk_scsi_cmd_filter *filter = &disk->cmd_filter;
+	struct blk_cmd_filter *filter = &disk->queue->cmd_filter;
 
 	kobject_put(&filter->kobj);
 	kobject_put(disk->holder_dir->parent);
 }
-
+EXPORT_SYMBOL(blk_unregister_filter);