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dev_get_primary_dev: fix invalid path check

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Fix commit bee9f4efdd81 "filter-mpath: work with nvme devices"
which removed setting the path for readlink.
This commit is contained in:
David Teigland 2021-02-09 09:47:08 -06:00
parent 427121efc7
commit f74f94c2dd
1 changed files with 6 additions and 1 deletions
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7
lib/device/dev-type.c
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@ -614,7 +614,12 @@ int dev_get_primary_dev(struct dev_types *dt, struct device *dev, dev_t *result)
* - basename ../../block/md0/md0 = md0
* Parent's 'dev' sysfs attribute = /sys/block/md0/dev
*/
if ((size = readlink(dirname(path), temp_path, sizeof(temp_path) - 1)) < 0) {
if (dm_snprintf(path, sizeof(path), "%s/dev/block/%d:%d",
dm_sysfs_dir(), major, minor) < 0) {
log_warn("WARNING: %s: major:minor sysfs path is too long.", dev_name(dev));
return 0;
}
if ((size = readlink(path, temp_path, sizeof(temp_path) - 1)) < 0) {
log_warn("WARNING: Readlink of %s failed.", path);
goto out;
}