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-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 37d25b1a5c..139e3d5a72 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -85,6 +85,12 @@
# define __ASSUME_SENDFILE 1
#endif
+/* Only very old kernels had no real symlinks for terminal descriptors
+ in /proc/self/fd. */
+#if __LINUX_KERNEL_VERSION >= 131584
+# define __ASSUME_PROC_SELF_FD_SYMLINK 1
+#endif
+
/* On x86 another `getrlimit' syscall was added in 2.3.25. */
#if __LINUX_KERNEL_VERSION >= 131865 && defined __i386__
# define __ASSUME_NEW_GETRLIMIT_SYSCALL 1