utils: define __NR_setns if missing on old glibcs

Closes #2248.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

diff --git a/src/lxc/utils.h b/src/lxc/utils.h
index e857b3610444e191d457ec3d34f102904e2ccd47..ebee2bf19f403d4426d7a1faaf09ee10f3b8ecec 100644 (file)
--- a/src/lxc/utils.h
+++ b/src/lxc/utils.h
@@ -129,6 +129,22 @@ extern char *get_rundir(void);
 #endif
 #endif
 
+#if !defined(__NR_setns) && !defined(__NR_set_ns)
+       #if defined(__x86_64__)
+               #define __NR_setns 308
+       #elif defined(__i386__)
+               #define __NR_setns 346
+       #elif defined(__arm__)
+               #define __NR_setns 375
+       #elif defined(__aarch64__)
+               #define __NR_setns 375
+       #elif defined(__powerpc__)
+               #define __NR_setns 350
+       #elif defined(__s390__)
+               #define __NR_setns 339
+       #endif
+#endif
+
 /* Define setns() if missing from the C library */
 #ifndef HAVE_SETNS
 static inline int setns(int fd, int nstype)