Port new net_id capabilities from systemd-udev-197

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/libudev/libudev-util.c b/src/libudev/libudev-util.c
index d3bbd05927..0ca86c815d 100644
--- a/src/libudev/libudev-util.c
+++ b/src/libudev/libudev-util.c
@@ -334,6 +334,25 @@ size_t util_strpcpy(char **dest, size_t size, const char *src)
         return size;
 }
 
+size_t util_strpcpyf(char **dest, size_t size, const char *src, ...)
+{
+        va_list va;
+        int i;
+
+        va_start(va, src);
+        i = vsnprintf(*dest, size, src, va);
+        if (i < (int)size) {
+                *dest += i;
+                size -= i;
+        } else {
+                *dest += size;
+                size = 0;
+        }
+        va_end(va);
+        *dest[0] = '\0';
+        return size;
+}
+
 /* concatenates list of strings, moves dest forward */
 size_t util_strpcpyl(char **dest, size_t size, const char *src, ...)
 {