fgets: avoid arithmetic overflow when n==INT_MIN is passed

[musl] / src / unistd / link.c

diff --git a/src/unistd/link.c b/src/unistd/link.c
index 20193f2..feec18e 100644 (file)
--- a/src/unistd/link.c
+++ b/src/unistd/link.c
@@ -1,7 +1,12 @@
 #include <unistd.h>
+#include <fcntl.h>
 #include "syscall.h"
 
 int link(const char *existing, const char *new)
 {
+#ifdef SYS_link
        return syscall(SYS_link, existing, new);
+#else
+       return syscall(SYS_linkat, AT_FDCWD, existing, AT_FDCWD, new, 0);
+#endif
 }