Add fallback for kcmp() in case __NR_kcmp is undefined

IA64 is missing this syscall as of linux-4.2. This works around it until the necessary kernel patch gets merged.
2015-09-23 14:41:28 -04:00
parent d801577473
commit 75b554579b
1 changed files with 5 additions and 0 deletions
@@ -1028,7 +1028,12 @@ static inline int renameat2(int oldfd, const char *oldname, int newfd, const cha

 #if !HAVE_DECL_KCMP
 static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
+#if defined(__NR_kcmp)
        return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
+#else
+        errno = ENOSYS;
+        return -1;
+#endif
 }
 #endif