Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: remove blk_queue_tag_depth() and blk_queue_tag_queue() block: remove unused ->busy part of the block queue tag map bio: fix __bio_copy_iov() handling of bio->bv_len bio: fix bio_copy_kern() handling of bio->bv_len block: submit_bh() inadvertently discards barrier flag on a sync write block: clean up cmdfilter sysfs interface block: rename blk_scsi_cmd_filter to blk_cmd_filter sg: restore command permission for TYPE_SCANNER block: move cmdfilter from gendisk to request_queue
This commit is contained in:
commit
0559bc8e9b
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@ -582,6 +582,8 @@ blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id)
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q->sg_reserved_size = INT_MAX;
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blk_set_cmd_filter_defaults(&q->cmd_filter);
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/*
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* all done
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*/
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@ -38,7 +38,8 @@ static int __blk_free_tags(struct blk_queue_tag *bqt)
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retval = atomic_dec_and_test(&bqt->refcnt);
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if (retval) {
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BUG_ON(bqt->busy);
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BUG_ON(find_first_bit(bqt->tag_map, bqt->max_depth) <
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bqt->max_depth);
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kfree(bqt->tag_index);
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bqt->tag_index = NULL;
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@ -147,7 +148,6 @@ static struct blk_queue_tag *__blk_queue_init_tags(struct request_queue *q,
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if (init_tag_map(q, tags, depth))
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goto fail;
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tags->busy = 0;
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atomic_set(&tags->refcnt, 1);
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return tags;
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fail:
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@ -313,7 +313,6 @@ void blk_queue_end_tag(struct request_queue *q, struct request *rq)
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* unlock memory barrier semantics.
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*/
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clear_bit_unlock(tag, bqt->tag_map);
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bqt->busy--;
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}
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EXPORT_SYMBOL(blk_queue_end_tag);
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@ -368,7 +367,6 @@ int blk_queue_start_tag(struct request_queue *q, struct request *rq)
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bqt->tag_index[tag] = rq;
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blkdev_dequeue_request(rq);
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list_add(&rq->queuelist, &q->tag_busy_list);
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bqt->busy++;
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return 0;
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}
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EXPORT_SYMBOL(blk_queue_start_tag);
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44
block/bsg.c
44
block/bsg.c
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@ -45,8 +45,6 @@ struct bsg_device {
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char name[BUS_ID_SIZE];
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int max_queue;
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unsigned long flags;
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struct blk_scsi_cmd_filter *cmd_filter;
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mode_t *f_mode;
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};
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enum {
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@ -174,7 +172,8 @@ unlock:
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}
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static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
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struct sg_io_v4 *hdr, struct bsg_device *bd)
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struct sg_io_v4 *hdr, struct bsg_device *bd,
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int has_write_perm)
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{
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if (hdr->request_len > BLK_MAX_CDB) {
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rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL);
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@ -187,8 +186,7 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
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return -EFAULT;
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if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) {
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if (blk_cmd_filter_verify_command(bd->cmd_filter, rq->cmd,
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bd->f_mode))
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if (blk_verify_command(&q->cmd_filter, rq->cmd, has_write_perm))
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return -EPERM;
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} else if (!capable(CAP_SYS_RAWIO))
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return -EPERM;
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@ -244,7 +242,7 @@ bsg_validate_sgv4_hdr(struct request_queue *q, struct sg_io_v4 *hdr, int *rw)
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* map sg_io_v4 to a request.
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*/
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static struct request *
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bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr)
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bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, int has_write_perm)
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{
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struct request_queue *q = bd->queue;
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struct request *rq, *next_rq = NULL;
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@ -266,7 +264,7 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr)
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rq = blk_get_request(q, rw, GFP_KERNEL);
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if (!rq)
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return ERR_PTR(-ENOMEM);
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ret = blk_fill_sgv4_hdr_rq(q, rq, hdr, bd);
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ret = blk_fill_sgv4_hdr_rq(q, rq, hdr, bd, has_write_perm);
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if (ret)
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goto out;
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@ -568,25 +566,6 @@ static inline void bsg_set_block(struct bsg_device *bd, struct file *file)
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set_bit(BSG_F_BLOCK, &bd->flags);
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}
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static void bsg_set_cmd_filter(struct bsg_device *bd,
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struct file *file)
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{
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struct inode *inode;
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struct gendisk *disk;
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if (!file)
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return;
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inode = file->f_dentry->d_inode;
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if (!inode)
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return;
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disk = inode->i_bdev->bd_disk;
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bd->cmd_filter = &disk->cmd_filter;
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bd->f_mode = &file->f_mode;
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}
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/*
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* Check if the error is a "real" error that we should return.
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*/
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@ -608,7 +587,6 @@ bsg_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
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dprintk("%s: read %Zd bytes\n", bd->name, count);
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bsg_set_block(bd, file);
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bsg_set_cmd_filter(bd, file);
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bytes_read = 0;
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ret = __bsg_read(buf, count, bd, NULL, &bytes_read);
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@ -621,7 +599,7 @@ bsg_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
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}
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static int __bsg_write(struct bsg_device *bd, const char __user *buf,
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size_t count, ssize_t *bytes_written)
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size_t count, ssize_t *bytes_written, int has_write_perm)
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{
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struct bsg_command *bc;
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struct request *rq;
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@ -652,7 +630,7 @@ static int __bsg_write(struct bsg_device *bd, const char __user *buf,
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/*
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* get a request, fill in the blanks, and add to request queue
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*/
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rq = bsg_map_hdr(bd, &bc->hdr);
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rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm);
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if (IS_ERR(rq)) {
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ret = PTR_ERR(rq);
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rq = NULL;
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@ -683,10 +661,11 @@ bsg_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
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dprintk("%s: write %Zd bytes\n", bd->name, count);
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bsg_set_block(bd, file);
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bsg_set_cmd_filter(bd, file);
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bytes_written = 0;
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ret = __bsg_write(bd, buf, count, &bytes_written);
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ret = __bsg_write(bd, buf, count, &bytes_written,
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file->f_mode & FMODE_WRITE);
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*ppos = bytes_written;
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/*
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@ -792,7 +771,6 @@ static struct bsg_device *bsg_add_device(struct inode *inode,
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bd->queue = rq;
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bsg_set_block(bd, file);
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bsg_set_cmd_filter(bd, file);
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atomic_set(&bd->ref_count, 1);
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mutex_lock(&bsg_mutex);
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@ -943,7 +921,7 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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if (copy_from_user(&hdr, uarg, sizeof(hdr)))
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return -EFAULT;
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rq = bsg_map_hdr(bd, &hdr);
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rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE);
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if (IS_ERR(rq))
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return PTR_ERR(rq);
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@ -20,15 +20,14 @@
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#include <linux/list.h>
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#include <linux/genhd.h>
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#include <linux/spinlock.h>
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#include <linux/parser.h>
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#include <linux/capability.h>
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#include <linux/bitops.h>
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#include <scsi/scsi.h>
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#include <linux/cdrom.h>
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int blk_cmd_filter_verify_command(struct blk_scsi_cmd_filter *filter,
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unsigned char *cmd, mode_t *f_mode)
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int blk_verify_command(struct blk_cmd_filter *filter,
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unsigned char *cmd, int has_write_perm)
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{
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/* root can do any command. */
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if (capable(CAP_SYS_RAWIO))
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@ -43,34 +42,15 @@ int blk_cmd_filter_verify_command(struct blk_scsi_cmd_filter *filter,
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return 0;
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/* Write-safe commands require a writable open */
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if (test_bit(cmd[0], filter->write_ok) && (*f_mode & FMODE_WRITE))
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if (test_bit(cmd[0], filter->write_ok) && has_write_perm)
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return 0;
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return -EPERM;
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}
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EXPORT_SYMBOL(blk_cmd_filter_verify_command);
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int blk_verify_command(struct file *file, unsigned char *cmd)
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{
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struct gendisk *disk;
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struct inode *inode;
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if (!file)
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return -EINVAL;
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inode = file->f_dentry->d_inode;
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if (!inode)
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return -EINVAL;
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disk = inode->i_bdev->bd_disk;
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return blk_cmd_filter_verify_command(&disk->cmd_filter,
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cmd, &file->f_mode);
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}
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EXPORT_SYMBOL(blk_verify_command);
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/* and now, the sysfs stuff */
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static ssize_t rcf_cmds_show(struct blk_scsi_cmd_filter *filter, char *page,
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static ssize_t rcf_cmds_show(struct blk_cmd_filter *filter, char *page,
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int rw)
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{
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char *npage = page;
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@ -84,8 +64,7 @@ static ssize_t rcf_cmds_show(struct blk_scsi_cmd_filter *filter, char *page,
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for (i = 0; i < BLK_SCSI_MAX_CMDS; i++) {
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if (test_bit(i, okbits)) {
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sprintf(npage, "%02x", i);
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npage += 2;
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npage += sprintf(npage, "0x%02x", i);
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if (i < BLK_SCSI_MAX_CMDS - 1)
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sprintf(npage++, " ");
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}
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@ -97,57 +76,65 @@ static ssize_t rcf_cmds_show(struct blk_scsi_cmd_filter *filter, char *page,
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return npage - page;
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}
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static ssize_t rcf_readcmds_show(struct blk_scsi_cmd_filter *filter, char *page)
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static ssize_t rcf_readcmds_show(struct blk_cmd_filter *filter, char *page)
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{
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return rcf_cmds_show(filter, page, READ);
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}
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|
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static ssize_t rcf_writecmds_show(struct blk_scsi_cmd_filter *filter,
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static ssize_t rcf_writecmds_show(struct blk_cmd_filter *filter,
|
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char *page)
|
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{
|
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return rcf_cmds_show(filter, page, WRITE);
|
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}
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|
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static ssize_t rcf_cmds_store(struct blk_scsi_cmd_filter *filter,
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||||
static ssize_t rcf_cmds_store(struct blk_cmd_filter *filter,
|
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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;
|
||||
int cmd, set;
|
||||
char *p, *status;
|
||||
|
||||
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);
|
||||
/* either of these cases means invalid input, so do nothing. */
|
||||
if (status || cmd >= BLK_SCSI_MAX_CMDS)
|
||||
return -EINVAL;
|
||||
|
||||
__set_bit(cmd, okbits);
|
||||
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;
|
||||
}
|
||||
|
||||
if (rw == READ)
|
||||
target_okbits = filter->read_ok;
|
||||
else
|
||||
target_okbits = filter->write_ok;
|
||||
while ((p = strsep((char **)&page, " ")) != NULL) {
|
||||
set = 1;
|
||||
|
||||
memmove(target_okbits, okbits, sizeof(okbits));
|
||||
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 == p) || cmd >= BLK_SCSI_MAX_CMDS)
|
||||
return -EINVAL;
|
||||
|
||||
if (set)
|
||||
__set_bit(cmd, okbits);
|
||||
else
|
||||
__clear_bit(cmd, 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);
|
||||
}
|
||||
|
||||
|
@ -219,114 +206,27 @@ 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;
|
||||
}
|
||||
|
||||
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);
|
||||
|
|
|
@ -105,12 +105,96 @@ static int sg_emulated_host(struct request_queue *q, int __user *p)
|
|||
return put_user(1, p);
|
||||
}
|
||||
|
||||
void blk_set_cmd_filter_defaults(struct blk_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, 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);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(blk_set_cmd_filter_defaults);
|
||||
|
||||
static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
|
||||
struct sg_io_hdr *hdr, struct file *file)
|
||||
{
|
||||
if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len))
|
||||
return -EFAULT;
|
||||
if (blk_verify_command(file, rq->cmd))
|
||||
if (blk_verify_command(&q->cmd_filter, rq->cmd,
|
||||
file->f_mode & FMODE_WRITE))
|
||||
return -EPERM;
|
||||
|
||||
/*
|
||||
|
@ -298,7 +382,7 @@ int sg_scsi_ioctl(struct file *file, struct request_queue *q,
|
|||
struct gendisk *disk, struct scsi_ioctl_command __user *sic)
|
||||
{
|
||||
struct request *rq;
|
||||
int err;
|
||||
int err, write_perm = 0;
|
||||
unsigned int in_len, out_len, bytes, opcode, cmdlen;
|
||||
char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
|
||||
|
||||
|
@ -340,7 +424,11 @@ int sg_scsi_ioctl(struct file *file, struct request_queue *q,
|
|||
if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
|
||||
goto error;
|
||||
|
||||
err = blk_verify_command(file, rq->cmd);
|
||||
/* scsi_ioctl passes NULL */
|
||||
if (file && (file->f_mode & FMODE_WRITE))
|
||||
write_perm = 1;
|
||||
|
||||
err = blk_verify_command(&q->cmd_filter, rq->cmd, write_perm);
|
||||
if (err)
|
||||
goto error;
|
||||
|
||||
|
|
|
@ -217,6 +217,18 @@ static int sg_last_dev(void);
|
|||
#define SZ_SG_IOVEC sizeof(sg_iovec_t)
|
||||
#define SZ_SG_REQ_INFO sizeof(sg_req_info_t)
|
||||
|
||||
static int sg_allow_access(struct file *filp, unsigned char *cmd)
|
||||
{
|
||||
struct sg_fd *sfp = (struct sg_fd *)filp->private_data;
|
||||
struct request_queue *q = sfp->parentdp->device->request_queue;
|
||||
|
||||
if (sfp->parentdp->device->type == TYPE_SCANNER)
|
||||
return 0;
|
||||
|
||||
return blk_verify_command(&q->cmd_filter,
|
||||
cmd, filp->f_mode & FMODE_WRITE);
|
||||
}
|
||||
|
||||
static int
|
||||
sg_open(struct inode *inode, struct file *filp)
|
||||
{
|
||||
|
@ -689,7 +701,7 @@ sg_new_write(Sg_fd *sfp, struct file *file, const char __user *buf,
|
|||
sg_remove_request(sfp, srp);
|
||||
return -EFAULT;
|
||||
}
|
||||
if (read_only && !blk_verify_command(file, cmnd)) {
|
||||
if (read_only && sg_allow_access(file, cmnd)) {
|
||||
sg_remove_request(sfp, srp);
|
||||
return -EPERM;
|
||||
}
|
||||
|
@ -793,6 +805,7 @@ sg_ioctl(struct inode *inode, struct file *filp,
|
|||
|
||||
if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
|
||||
return -ENXIO;
|
||||
|
||||
SCSI_LOG_TIMEOUT(3, printk("sg_ioctl: %s, cmd=0x%x\n",
|
||||
sdp->disk->disk_name, (int) cmd_in));
|
||||
read_only = (O_RDWR != (filp->f_flags & O_ACCMODE));
|
||||
|
@ -1061,7 +1074,7 @@ sg_ioctl(struct inode *inode, struct file *filp,
|
|||
|
||||
if (copy_from_user(&opcode, siocp->data, 1))
|
||||
return -EFAULT;
|
||||
if (!blk_verify_command(filp, &opcode))
|
||||
if (sg_allow_access(filp, &opcode))
|
||||
return -EPERM;
|
||||
}
|
||||
return sg_scsi_ioctl(filp, sdp->device->request_queue, NULL, p);
|
||||
|
|
48
fs/bio.c
48
fs/bio.c
|
@ -469,20 +469,21 @@ static void bio_free_map_data(struct bio_map_data *bmd)
|
|||
kfree(bmd);
|
||||
}
|
||||
|
||||
static struct bio_map_data *bio_alloc_map_data(int nr_segs, int iov_count)
|
||||
static struct bio_map_data *bio_alloc_map_data(int nr_segs, int iov_count,
|
||||
gfp_t gfp_mask)
|
||||
{
|
||||
struct bio_map_data *bmd = kmalloc(sizeof(*bmd), GFP_KERNEL);
|
||||
struct bio_map_data *bmd = kmalloc(sizeof(*bmd), gfp_mask);
|
||||
|
||||
if (!bmd)
|
||||
return NULL;
|
||||
|
||||
bmd->iovecs = kmalloc(sizeof(struct bio_vec) * nr_segs, GFP_KERNEL);
|
||||
bmd->iovecs = kmalloc(sizeof(struct bio_vec) * nr_segs, gfp_mask);
|
||||
if (!bmd->iovecs) {
|
||||
kfree(bmd);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
bmd->sgvecs = kmalloc(sizeof(struct sg_iovec) * iov_count, GFP_KERNEL);
|
||||
bmd->sgvecs = kmalloc(sizeof(struct sg_iovec) * iov_count, gfp_mask);
|
||||
if (bmd->sgvecs)
|
||||
return bmd;
|
||||
|
||||
|
@ -491,8 +492,8 @@ static struct bio_map_data *bio_alloc_map_data(int nr_segs, int iov_count)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
static int __bio_copy_iov(struct bio *bio, struct sg_iovec *iov, int iov_count,
|
||||
int uncopy)
|
||||
static int __bio_copy_iov(struct bio *bio, struct bio_vec *iovecs,
|
||||
struct sg_iovec *iov, int iov_count, int uncopy)
|
||||
{
|
||||
int ret = 0, i;
|
||||
struct bio_vec *bvec;
|
||||
|
@ -502,7 +503,7 @@ static int __bio_copy_iov(struct bio *bio, struct sg_iovec *iov, int iov_count,
|
|||
|
||||
__bio_for_each_segment(bvec, bio, i, 0) {
|
||||
char *bv_addr = page_address(bvec->bv_page);
|
||||
unsigned int bv_len = bvec->bv_len;
|
||||
unsigned int bv_len = iovecs[i].bv_len;
|
||||
|
||||
while (bv_len && iov_idx < iov_count) {
|
||||
unsigned int bytes;
|
||||
|
@ -554,7 +555,7 @@ int bio_uncopy_user(struct bio *bio)
|
|||
struct bio_map_data *bmd = bio->bi_private;
|
||||
int ret;
|
||||
|
||||
ret = __bio_copy_iov(bio, bmd->sgvecs, bmd->nr_sgvecs, 1);
|
||||
ret = __bio_copy_iov(bio, bmd->iovecs, bmd->sgvecs, bmd->nr_sgvecs, 1);
|
||||
|
||||
bio_free_map_data(bmd);
|
||||
bio_put(bio);
|
||||
|
@ -596,7 +597,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q, struct sg_iovec *iov,
|
|||
len += iov[i].iov_len;
|
||||
}
|
||||
|
||||
bmd = bio_alloc_map_data(nr_pages, iov_count);
|
||||
bmd = bio_alloc_map_data(nr_pages, iov_count, GFP_KERNEL);
|
||||
if (!bmd)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
|
@ -633,7 +634,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q, struct sg_iovec *iov,
|
|||
* success
|
||||
*/
|
||||
if (!write_to_vm) {
|
||||
ret = __bio_copy_iov(bio, iov, iov_count, 0);
|
||||
ret = __bio_copy_iov(bio, bio->bi_io_vec, iov, iov_count, 0);
|
||||
if (ret)
|
||||
goto cleanup;
|
||||
}
|
||||
|
@ -942,19 +943,22 @@ static void bio_copy_kern_endio(struct bio *bio, int err)
|
|||
{
|
||||
struct bio_vec *bvec;
|
||||
const int read = bio_data_dir(bio) == READ;
|
||||
char *p = bio->bi_private;
|
||||
struct bio_map_data *bmd = bio->bi_private;
|
||||
int i;
|
||||
char *p = bmd->sgvecs[0].iov_base;
|
||||
|
||||
__bio_for_each_segment(bvec, bio, i, 0) {
|
||||
char *addr = page_address(bvec->bv_page);
|
||||
int len = bmd->iovecs[i].bv_len;
|
||||
|
||||
if (read && !err)
|
||||
memcpy(p, addr, bvec->bv_len);
|
||||
memcpy(p, addr, len);
|
||||
|
||||
__free_page(bvec->bv_page);
|
||||
p += bvec->bv_len;
|
||||
p += len;
|
||||
}
|
||||
|
||||
bio_free_map_data(bmd);
|
||||
bio_put(bio);
|
||||
}
|
||||
|
||||
|
@ -978,11 +982,21 @@ struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
|
|||
const int nr_pages = end - start;
|
||||
struct bio *bio;
|
||||
struct bio_vec *bvec;
|
||||
struct bio_map_data *bmd;
|
||||
int i, ret;
|
||||
struct sg_iovec iov;
|
||||
|
||||
iov.iov_base = data;
|
||||
iov.iov_len = len;
|
||||
|
||||
bmd = bio_alloc_map_data(nr_pages, 1, gfp_mask);
|
||||
if (!bmd)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
ret = -ENOMEM;
|
||||
bio = bio_alloc(gfp_mask, nr_pages);
|
||||
if (!bio)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
goto out_bmd;
|
||||
|
||||
while (len) {
|
||||
struct page *page;
|
||||
|
@ -1016,14 +1030,18 @@ struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
|
|||
}
|
||||
}
|
||||
|
||||
bio->bi_private = data;
|
||||
bio->bi_private = bmd;
|
||||
bio->bi_end_io = bio_copy_kern_endio;
|
||||
|
||||
bio_set_map_data(bmd, bio, &iov, 1);
|
||||
return bio;
|
||||
cleanup:
|
||||
bio_for_each_segment(bvec, bio, i)
|
||||
__free_page(bvec->bv_page);
|
||||
|
||||
bio_put(bio);
|
||||
out_bmd:
|
||||
bio_free_map_data(bmd);
|
||||
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
|
13
fs/buffer.c
13
fs/buffer.c
|
@ -2926,14 +2926,17 @@ int submit_bh(int rw, struct buffer_head * bh)
|
|||
BUG_ON(!buffer_mapped(bh));
|
||||
BUG_ON(!bh->b_end_io);
|
||||
|
||||
if (buffer_ordered(bh) && (rw == WRITE))
|
||||
rw = WRITE_BARRIER;
|
||||
/*
|
||||
* Mask in barrier bit for a write (could be either a WRITE or a
|
||||
* WRITE_SYNC
|
||||
*/
|
||||
if (buffer_ordered(bh) && (rw & WRITE))
|
||||
rw |= WRITE_BARRIER;
|
||||
|
||||
/*
|
||||
* Only clear out a write error when rewriting, should this
|
||||
* include WRITE_SYNC as well?
|
||||
* Only clear out a write error when rewriting
|
||||
*/
|
||||
if (test_set_buffer_req(bh) && (rw == WRITE || rw == WRITE_BARRIER))
|
||||
if (test_set_buffer_req(bh) && (rw & WRITE))
|
||||
clear_buffer_write_io_error(bh);
|
||||
|
||||
/*
|
||||
|
|
|
@ -280,6 +280,15 @@ struct blk_queue_tag {
|
|||
atomic_t refcnt; /* map can be shared */
|
||||
};
|
||||
|
||||
#define BLK_SCSI_MAX_CMDS (256)
|
||||
#define BLK_SCSI_CMD_PER_LONG (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8))
|
||||
|
||||
struct blk_cmd_filter {
|
||||
unsigned long read_ok[BLK_SCSI_CMD_PER_LONG];
|
||||
unsigned long write_ok[BLK_SCSI_CMD_PER_LONG];
|
||||
struct kobject kobj;
|
||||
};
|
||||
|
||||
struct request_queue
|
||||
{
|
||||
/*
|
||||
|
@ -398,6 +407,7 @@ struct request_queue
|
|||
#if defined(CONFIG_BLK_DEV_BSG)
|
||||
struct bsg_class_device bsg_dev;
|
||||
#endif
|
||||
struct blk_cmd_filter cmd_filter;
|
||||
};
|
||||
|
||||
#define QUEUE_FLAG_CLUSTER 0 /* cluster several segments into 1 */
|
||||
|
@ -807,8 +817,6 @@ extern void blk_put_queue(struct request_queue *);
|
|||
/*
|
||||
* tag stuff
|
||||
*/
|
||||
#define blk_queue_tag_depth(q) ((q)->queue_tags->busy)
|
||||
#define blk_queue_tag_queue(q) ((q)->queue_tags->busy < (q)->queue_tags->max_depth)
|
||||
#define blk_rq_tagged(rq) ((rq)->cmd_flags & REQ_QUEUED)
|
||||
extern int blk_queue_start_tag(struct request_queue *, struct request *);
|
||||
extern struct request *blk_queue_find_tag(struct request_queue *, int);
|
||||
|
@ -833,11 +841,11 @@ extern int blkdev_issue_flush(struct block_device *, sector_t *);
|
|||
/*
|
||||
* command filter functions
|
||||
*/
|
||||
extern int blk_verify_command(struct file *file, unsigned char *cmd);
|
||||
extern int blk_cmd_filter_verify_command(struct blk_scsi_cmd_filter *filter,
|
||||
unsigned char *cmd, mode_t *f_mode);
|
||||
extern int blk_verify_command(struct blk_cmd_filter *filter,
|
||||
unsigned char *cmd, int has_write_perm);
|
||||
extern int blk_register_filter(struct gendisk *disk);
|
||||
extern void blk_unregister_filter(struct gendisk *disk);
|
||||
extern void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter);
|
||||
|
||||
#define MAX_PHYS_SEGMENTS 128
|
||||
#define MAX_HW_SEGMENTS 128
|
||||
|
|
|
@ -110,15 +110,6 @@ struct hd_struct {
|
|||
#define GENHD_FL_SUPPRESS_PARTITION_INFO 32
|
||||
#define GENHD_FL_FAIL 64
|
||||
|
||||
#define BLK_SCSI_MAX_CMDS (256)
|
||||
#define BLK_SCSI_CMD_PER_LONG (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8))
|
||||
|
||||
struct blk_scsi_cmd_filter {
|
||||
unsigned long read_ok[BLK_SCSI_CMD_PER_LONG];
|
||||
unsigned long write_ok[BLK_SCSI_CMD_PER_LONG];
|
||||
struct kobject kobj;
|
||||
};
|
||||
|
||||
struct gendisk {
|
||||
int major; /* major number of driver */
|
||||
int first_minor;
|
||||
|
@ -128,7 +119,6 @@ struct gendisk {
|
|||
struct hd_struct **part; /* [indexed by minor] */
|
||||
struct block_device_operations *fops;
|
||||
struct request_queue *queue;
|
||||
struct blk_scsi_cmd_filter cmd_filter;
|
||||
void *private_data;
|
||||
sector_t capacity;
|
||||
|
||||
|
|
Loading…
Reference in a new issue