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pvmove: fix building sibling raid lv name

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Make a local copy of the 'idx' string to avoid
overlapping during the rebuild of name.

This fixes cases where users specified raid
component LVs for moving.

Reported-by: kotarou3@github.com
This commit is contained in:
Zdenek Kabelac 2023-09-19 14:36:30 +02:00
parent 970e4d295e
commit e2f29c4989
1 changed files with 8 additions and 1 deletions
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9
tools/pvmove.c
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@ -141,6 +141,7 @@ static int _remove_sibling_pvs_from_trim_list(struct logical_volume *lv,
char *idx, *suffix;
const char *sibling;
char sublv_name[NAME_LEN];
char idx_buf[16];
struct logical_volume *sublv;
struct dm_list untrim_list, *pvh1, *pvh2;
struct pv_list *pvl1, *pvl2;
@ -174,9 +175,15 @@ static int _remove_sibling_pvs_from_trim_list(struct logical_volume *lv,
}
idx++;
/* Copy idx to local buffer */
if (!dm_strncpy(idx_buf, idx, sizeof(idx_buf))) {
log_error(INTERNAL_ERROR "Unexpected LV index %s.", idx);
return 0;
}
/* Create the siblings name (e.g. "raidlv_rmeta_N" -> "raidlv_rimage_N" */
if (dm_snprintf(suffix + 2, sizeof(sublv_name) - 2 - (suffix - sublv_name),
"%s_%s", sibling, idx) < 0) {
"%s_%s", sibling, idx_buf) < 0) {
log_error("Raid sublv for name %s too long.", lv_name);
return 0;
}