libc: add posix_fallocate()

[uclinux-h8/uClibc.git] / libc / sysdeps / linux / common / bits / kernel-features.h

diff --git a/libc/sysdeps/linux/common/bits/kernel-features.h b/libc/sysdeps/linux/common/bits/kernel-features.h
index 4d1e0cb..6184c2b 100644 (file)
--- a/libc/sysdeps/linux/common/bits/kernel-features.h
+++ b/libc/sysdeps/linux/common/bits/kernel-features.h
@@ -495,6 +495,14 @@
 # define __ASSUME_PRIVATE_FUTEX        1
 #endif
 
+/* Support for fallocate was added in 2.6.23,
+   on s390 only after 2.6.23-rc1, on alpha only after 2.6.33-rc1.  */
+#if __LINUX_KERNEL_VERSION >= 0x020617 \
+    && (!defined __s390__ || __LINUX_KERNEL_VERSION >= 0x020618) \
+    && (!defined __alpha__ || __LINUX_KERNEL_VERSION >= 0x020621)
+# define __ASSUME_FALLOCATE 1
+#endif
+
 /* getcpu is a syscall for x86-64 since 3.1.  */
 #if defined __x86_64__ && __LINUX_KERNEL_VERSION >= 0x030100
 # define __ASSUME_GETCPU_SYSCALL        1