os/bits/linux: add the fadvise advice values

ziglang · May 7, 2021 · c8a9cfb · c8a9cfb
1 parent 84d5cc3
commit c8a9cfb
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/lib/std/os/bits/linux.zig b/lib/std/os/bits/linux.zig
@@ -2402,6 +2402,27 @@ pub const MADV_PAGEOUT = 21;
 pub const MADV_HWPOISON = 100;
 pub const MADV_SOFT_OFFLINE = 101;
 
+pub const POSIX_FADV_NORMAL = 0;
+pub const POSIX_FADV_RANDOM = 1;
+pub const POSIX_FADV_SEQUENTIAL = 2;
+pub const POSIX_FADV_WILLNEED = 3;
+pub usingnamespace switch (builtin.arch) {
+    .s390x => if (@typeInfo(usize).Int.bits == 64)
+        struct {
+            pub const POSIX_FADV_DONTNEED = 6;
+            pub const POSIX_FADV_NOREUSE = 7;
+        }
+    else
+        struct {
+            pub const POSIX_FADV_DONTNEED = 4;
+            pub const POSIX_FADV_NOREUSE = 5;
+        },
+    else => struct {
+        pub const POSIX_FADV_DONTNEED = 4;
+        pub const POSIX_FADV_NOREUSE = 5;
+    },
+};
+
 pub const __kernel_timespec = extern struct {
     tv_sec: i64,
     tv_nsec: i64,