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Remove small hard-coded activation target line parameter limit.

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This commit is contained in:
Alasdair Kergon 2003-08-20 12:53:57 +00:00
parent 36cf79384f
commit 9a90f1aba6
1 changed files with 44 additions and 14 deletions
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58
lib/activate/dev_manager.c
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@ -41,6 +41,8 @@
*
*/
#define MAX_TARGET_PARAMSIZE 50000
enum {
ACTIVE = 0,
RELOAD = 1,
@ -765,10 +767,10 @@ static int _resume(struct dev_layer *dl)
* Emit a target for a given segment.
* FIXME: tidy this function.
*/
static int _emit_target(struct dev_manager *dm, struct dm_task *dmt,
struct lv_segment *seg)
static int _emit_target_line(struct dev_manager *dm, struct dm_task *dmt,
struct lv_segment *seg, char *params,
size_t paramsize)
{
char params[1024];
uint64_t esize = seg->lv->vg->extent_size;
uint32_t s, start_area = 0u, areas = seg->area_count;
int w = 0, tw = 0;
@ -794,7 +796,7 @@ static int _emit_target(struct dev_manager *dm, struct dm_task *dmt,
target = "linear";
else if (areas > 1) {
target = "striped";
if ((tw = lvm_snprintf(params, sizeof(params), "%u %u ",
if ((tw = lvm_snprintf(params, paramsize, "%u %u ",
areas, seg->stripe_size)) < 0)
goto error;
w = tw;
@ -820,8 +822,7 @@ static int _emit_target(struct dev_manager *dm, struct dm_task *dmt,
break;
}
target = "mirror";
if ((tw = lvm_snprintf(params, sizeof(params),
"core 1 %u %u ",
if ((tw = lvm_snprintf(params, paramsize, "core 1 %u %u ",
dm->mirror_region_size, areas)) < 0)
goto error;
w = tw;
@ -833,11 +834,11 @@ static int _emit_target(struct dev_manager *dm, struct dm_task *dmt,
if ((seg->area[s].type == AREA_PV &&
(!seg->area[s].u.pv.pv || !seg->area[s].u.pv.pv->dev)) ||
(seg->area[s].type == AREA_LV && !seg->area[s].u.lv.lv))
tw = lvm_snprintf(params + w, sizeof(params) - w,
tw = lvm_snprintf(params + w, paramsize - w,
"%s 0%s", dm->stripe_filler,
trailing_space);
else if (seg->area[s].type == AREA_PV)
tw = lvm_snprintf(params + w, sizeof(params) - w,
tw = lvm_snprintf(params + w, paramsize - w,
"%s %" PRIu64 "%s",
dev_name(seg->area[s].u.pv.pv->dev),
(seg->area[s].u.pv.pv->pe_start +
@ -855,7 +856,7 @@ static int _emit_target(struct dev_manager *dm, struct dm_task *dmt,
dl->info.major, dl->info.minor);
return 0;
}
tw = lvm_snprintf(params + w, sizeof(params) - w,
tw = lvm_snprintf(params + w, paramsize - w,
"%s %" PRIu64 "%s", devbuf,
esize * seg->area[s].u.lv.le,
trailing_space);
@ -877,7 +878,37 @@ static int _emit_target(struct dev_manager *dm, struct dm_task *dmt,
return 1;
error:
log_error("Insufficient space in params[] to write target parameters.");
log_debug("Insufficient space in params[%" PRIsize_t "] for target "
"parameters.", paramsize);
return -1;
}
static int _emit_target(struct dev_manager *dm, struct dm_task *dmt,
struct lv_segment *seg)
{
char *params;
size_t paramsize = 4096;
int ret;
do {
if (!(params = dbg_malloc(paramsize))) {
log_error("Insufficient space for target parameters.");
return 0;
}
ret = _emit_target_line(dm, dmt, seg, params, paramsize);
dbg_free(params);
if (!ret)
stack;
if (ret >= 0)
return ret;
paramsize *= 2;
} while (paramsize < MAX_TARGET_PARAMSIZE);
log_error("Target parameter size too big. Aborting.");
return 0;
}
@ -985,8 +1016,8 @@ static int _populate_snapshot(struct dev_manager *dm,
return 0;
}
if (snprintf(params, sizeof(params), "%s %s P %d",
devbufo, devbufc, s->chunk_size) == -1) {
if (lvm_snprintf(params, sizeof(params), "%s %s P %d",
devbufo, devbufc, s->chunk_size) == -1) {
stack;
return 0;
}
@ -1589,8 +1620,7 @@ static int _resume_with_deps(struct dev_manager *dm, struct dev_layer *dl)
}
}
if (dl->info.exists & !_get_flag(dl, SUSPENDED) &&
!_resume(dl)) {
if (dl->info.exists & !_get_flag(dl, SUSPENDED) && !_resume(dl)) {
stack;
return 0;
}