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authorJustin Stitt <justinstitt@google.com>2023-09-21 09:17:47 +0200
committerLeon Romanovsky <leon@kernel.org>2023-09-22 12:28:54 +0200
commitc2d0c5b28a77d549ea52c70cb828e3ae29dda24d (patch)
treef89d3661468fdac941a9656f332693016f606c4f /drivers/infiniband
parentRDMA/irdma: Replace deprecated strncpy (diff)
downloadlinux-c2d0c5b28a77d549ea52c70cb828e3ae29dda24d.tar.xz
linux-c2d0c5b28a77d549ea52c70cb828e3ae29dda24d.zip
IB/hfi1: Replace deprecated strncpy
`strncpy` is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. We see that `buf` is expected to be NUL-terminated based on it's use within a trace event wherein `is_misc_err_name` and `is_various_name` map to `is_name` through `is_table`: | TRACE_EVENT(hfi1_interrupt, | TP_PROTO(struct hfi1_devdata *dd, const struct is_table *is_entry, | int src), | TP_ARGS(dd, is_entry, src), | TP_STRUCT__entry(DD_DEV_ENTRY(dd) | __array(char, buf, 64) | __field(int, src) | ), | TP_fast_assign(DD_DEV_ASSIGN(dd); | is_entry->is_name(__entry->buf, 64, | src - is_entry->start); | __entry->src = src; | ), | TP_printk("[%s] source: %s [%d]", __get_str(dev), __entry->buf, | __entry->src) | ); Considering the above, a suitable replacement is `strscpy_pad` due to the fact that it guarantees NUL-termination on the destination buffer while maintaining the NUL-padding behavior that strncpy provides. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt <justinstitt@google.com> Link: https://lore.kernel.org/r/20230921-strncpy-drivers-infiniband-hw-hfi1-chip-c-v1-1-37afcf4964d9@google.com Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/hfi1/chip.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c
index de09b68075ab..b3bbe4278786 100644
--- a/drivers/infiniband/hw/hfi1/chip.c
+++ b/drivers/infiniband/hw/hfi1/chip.c
@@ -5334,7 +5334,7 @@ static const char * const cce_misc_names[] = {
static char *is_misc_err_name(char *buf, size_t bsize, unsigned int source)
{
if (source < ARRAY_SIZE(cce_misc_names))
- strncpy(buf, cce_misc_names[source], bsize);
+ strscpy_pad(buf, cce_misc_names[source], bsize);
else
snprintf(buf, bsize, "Reserved%u",
source + IS_GENERAL_ERR_START);
@@ -5374,7 +5374,7 @@ static const char * const various_names[] = {
static char *is_various_name(char *buf, size_t bsize, unsigned int source)
{
if (source < ARRAY_SIZE(various_names))
- strncpy(buf, various_names[source], bsize);
+ strscpy_pad(buf, various_names[source], bsize);
else
snprintf(buf, bsize, "Reserved%u", source + IS_VARIOUS_START);
return buf;