diff options
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/edac_mc_sysfs.c | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 7d1b31bc6555..bf6b6802105c 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -240,14 +240,21 @@ static ssize_t channel_dimm_label_store(struct device *dev, struct csrow_info *csrow = to_csrow(dev); unsigned chan = to_channel(mattr); struct rank_info *rank = csrow->channels[chan]; + size_t copy_count = count; - ssize_t max_size = 0; + if (count == 0) + return -EINVAL; + + if (data[count - 1] == '\0' || data[count - 1] == '\n') + copy_count -= 1; - max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1); - strncpy(rank->dimm->label, data, max_size); - rank->dimm->label[max_size] = '\0'; + if (copy_count >= sizeof(rank->dimm->label)) + return -EINVAL; - return max_size; + strncpy(rank->dimm->label, data, copy_count); + rank->dimm->label[copy_count] = '\0'; + + return count; } /* show function for dynamic chX_ce_count attribute */ @@ -494,14 +501,21 @@ static ssize_t dimmdev_label_store(struct device *dev, size_t count) { struct dimm_info *dimm = to_dimm(dev); + size_t copy_count = count; - ssize_t max_size = 0; + if (count == 0) + return -EINVAL; + + if (data[count - 1] == '\0' || data[count - 1] == '\n') + copy_count -= 1; - max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1); - strncpy(dimm->label, data, max_size); - dimm->label[max_size] = '\0'; + if (copy_count >= sizeof(dimm->label)) + return -EINVAL; - return max_size; + strncpy(dimm->label, data, copy_count); + dimm->label[copy_count] = '\0'; + + return count; } static ssize_t dimmdev_size_show(struct device *dev, |