config/git: import suckless sbase

i currently use the output of sha512sum in several
places of xbmk, which is a bit unreliable in case
output changes.

other cases where i use util outputs in variables
are probably reliable, because i'm using mostly
posix utilities in those.

to mitigate this, i now import suckless sbase, which
has a reasonable sha512sum implementation.

*every* binary it builds is being placed in build.list,
because i'll probably start using more of them.

for example, i may start modifying the "date"
implementation, adding the GNU-specific options that
i need as mentioned on init.sh

i'm importing it in util/ because the sha512sum
util is needed for verifying project sources, so
if sbase itself is a "project source", that means
we can into a chicken and egg bootstrapping problem.

this is sbase at revision:
055cc1ae1b3a13c3d8f25af0a4a3316590efcd48

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/util/sbase/libutil/fnck.c b/util/sbase/libutil/fnck.c
new file mode 100644
index 00000000..4f8875ba
--- /dev/null
+++ b/util/sbase/libutil/fnck.c
@@ -0,0 +1,22 @@
+/* See LICENSE file for copyright and license details. */
+#include <sys/stat.h>
+
+#include "../util.h"
+
+void
+fnck(const char *a, const char *b,
+     int (*fn)(const char *, const char *, int), int depth)
+{
+	struct stat sta, stb;
+
+	if (!stat(a, &sta)
+	    && !stat(b, &stb)
+	    && sta.st_dev == stb.st_dev
+	    && sta.st_ino == stb.st_ino) {
+		weprintf("%s -> %s: same file\n", a, b);
+		return;
+	}
+
+	if (fn(a, b, depth) < 0)
+		eprintf("%s -> %s:", a, b);
+}