Add __getcwd() syscall, and have getcwd() take a shot at it.

If your kernel doesn't support __getcwd() or if __getcwd() cannot
deliver because of cache expiry, it does the canonical thing.

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/libc/gen/getcwd.c b/lib/libc/gen/getcwd.c
index 1593311..eb48b5a 100644
--- a/lib/libc/gen/getcwd.c
+++ b/lib/libc/gen/getcwd.c
@@ -89,6 +89,17 @@ getcwd(pt, size)
 			return (NULL);
 		ept = pt + ptsize;
 	}
+	if (!__getcwd(pt,ptsize)) {
+		char c;
+		bpt = pt;
+		ept = pt + strlen(pt) - 1;
+		while (bpt < ept) {
+			c = *bpt;
+			*bpt++ = *ept;
+			*ept-- = c;
+		}
+		return (pt);
+	}
 	bpt = ept - 1;
 	*bpt = '\0';