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o Removed the error reporting function from the target constructor function

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arguments. Errors are now reported by setting a pointer in the table to
   point to an error message.
This commit is contained in:
Steven Whitehouse 2001-09-19 21:27:15 +00:00
parent c1a727359e
commit 6c15d652d4
5 changed files with 13 additions and 14 deletions
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3
driver/device-mapper/device-mapper.h
View File

@ -42,8 +42,7 @@ typedef void (*dm_error_fn)(const char *message, void *private);
/* constructor, destructor and map fn types */
typedef int (*dm_ctr_fn)(struct dm_table *t,
offset_t b, offset_t l,
struct text_region *args, void **result,
dm_error_fn fn, void *private);
struct text_region *args, void **result);
typedef void (*dm_dtr_fn)(struct dm_table *t, void *c);
typedef int (*dm_map_fn)(struct buffer_head *bh, int rw, void *context);

15
driver/device-mapper/dm-linear.c
View File

@ -43,8 +43,7 @@ struct linear_c {
* <dev_path> <offset>
*/
static int linear_ctr(struct dm_table *t, offset_t b, offset_t l,
struct text_region *args, void **result,
dm_error_fn fn, void *private)
struct text_region *args, void **result)
{
struct linear_c *lc;
unsigned int start;
@ -55,7 +54,7 @@ static int linear_ctr(struct dm_table *t, offset_t b, offset_t l,
int hardsect_size;
if (!dm_get_word(args, &word)) {
fn("couldn't get device path", private);
t->err_msg = "couldn't get device path";
return -EINVAL;
}
@ -65,26 +64,26 @@ static int linear_ctr(struct dm_table *t, offset_t b, offset_t l,
if (IS_ERR(bdev)) {
switch (PTR_ERR(bdev)) {
case -ENOTBLK:
fn("not a block device", private);
t->err_msg = "not a block device";
break;
case -EACCES:
fn("nodev mount option", private);
t->err_msg = "nodev mount option";
break;
case -ENOENT:
default:
fn("no such device", private);
t->err_msg = "no such device";
}
return PTR_ERR(bdev);
}
if (!dm_get_number(args, &start)) {
fn("destination start not given", private);
t->err_msg = "destination start not given";
rv = -EINVAL;
goto out_bdev_put;
}
if (!(lc = kmalloc(sizeof(lc), GFP_KERNEL))) {
fn("couldn't allocate memory for linear context\n", private);
t->err_msg = "couldn't allocate memory for linear context\n";
rv = -ENOMEM;
goto out_bdev_put;
}

5
driver/device-mapper/dm-parse.c
View File

@ -92,9 +92,10 @@ struct dm_table *dm_parse(extract_line_fn line_fn, void *l_private,
}
/* build the target */
if (ttype->ctr(table, start, size, &line, &context,
err_fn, e_private))
if (ttype->ctr(table, start, size, &line, &context)) {
err_fn(table->err_msg, e_private);
PARSE_ERROR;
}
/* no point registering the target
if there was an error. */

3
driver/device-mapper/dm-target.c
View File

@ -121,8 +121,7 @@ int dm_unregister_target(struct target_type *t)
* up LV's that have holes in them.
*/
static int io_err_ctr(struct dm_table *t, offset_t b, offset_t l,
struct text_region *args, void **result,
dm_error_fn fn, void *private)
struct text_region *args, void **result)
{
/* this takes no arguments */
*result = 0;

1
driver/device-mapper/dm.h
View File

@ -169,6 +169,7 @@ struct target {
struct dm_table {
atomic_t refcnt;
char *err_msg;
/* btree table */
int depth;
int counts[MAX_DEPTH]; /* in nodes */