commit 40f481037ef98442b061e310a04ee5e110120f72
author Damjan Marion <damarion@cisco.com> Mon Aug 07 01:07:09 2023 +0200
committer Florin Coras <florin.coras@gmail.com> Mon Aug 07 18:00:10 2023 +0000
tree 20ecc6d1c7bcc701417b5bbbfd51cd2d1eadfa24
parent 993735913c6764d7a66c8fae4196a61206611186

vppinfra: add clib_file_get_resolved_basename

more generic version of clib_sysfs_link_to_name with support for
format strings...

Type: improvement
Change-Id: I0cb263748970378c661415196eb7e08450370677
Signed-off-by: Damjan Marion <damarion@cisco.com>

src/vlib/linux/vfio.c

diff --git a/src/vlib/linux/vfio.c b/src/vlib/linux/vfio.c
index dc68c52..ee04081 100644
--- a/src/vlib/linux/vfio.c
+++ b/src/vlib/linux/vfio.c
@@ -185,10 +185,8 @@
   int fd;
 
   *is_noiommu = 0;
-  s =
-    format (s, "/sys/bus/pci/devices/%U/iommu_group%c", format_vlib_pci_addr,
-	    addr, 0);
-  tmpstr = clib_sysfs_link_to_name ((char *) s);
+  tmpstr = clib_file_get_resolved_basename (
+    "/sys/bus/pci/devices/%U/iommu_group", format_vlib_pci_addr, addr);
   if (tmpstr)
     {
       iommu_group = atoi ((char *) tmpstr);