The function strtoul will not return ERANGE if the input is negative, as
one might expect.
0000:-FFFFFFFFFFFFFFFB:00.0
is not a better way to write 0000:05:00.0.
To simplify checking for '-', forbid using spaces before the field value.
0000: 00: 2c.0
Should not be accepted.
Fixes: af75078fece3 ("first public release")
Cc: sta...@dpdk.org
Signed-off-by: Gaetan Rivet <gr...@u256.net>
---
lib/librte_pci/rte_pci.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/lib/librte_pci/rte_pci.c b/lib/librte_pci/rte_pci.c
index d1ab6b414..e4ecdc32f 100644
--- a/lib/librte_pci/rte_pci.c
+++ b/lib/librte_pci/rte_pci.c
@@ -35,6 +35,12 @@ get_u8_pciaddr_field(const char *in, void *_u8, char dlm)
if (*in == '\0')
return NULL;
+ /* PCI field starting with spaces is forbidden.
+ * Negative wrap-around is not reported as an error by strtoul.
+ */
+ if (*in == ' ' || *in == '-')
+ return NULL;
+
errno = 0;
val = strtoul(in, &end, 16);
if (errno != 0 || end[0] != dlm || val > UINT8_MAX) {
@@ -70,6 +76,12 @@ pci_dbdf_parse(const char *input, struct rte_pci_addr
*dev_addr)
unsigned long val;
char *end;
+ /* PCI id starting with spaces is forbidden.
+ * Negative wrap-around is not reported as an error by strtoul.
+ */
+ if (*in == ' ' || *in == '-')
+ return EINVAL;
+
errno = 0;
val = strtoul(in, &end, 16);
if (errno != 0 || end[0] != ':' || val > UINT16_MAX)
--
2.26.2
