linux: Add missing Linux-specific fcntls

Also move F_DUPFD_CLOEXEC up a level as it is available on Android.

Author: kamalmarhubi

libc-test/build.rs

@@ -315,6 +315,15 @@ fn main() {
             "QFMT_VFS_OLD" |
             "QFMT_VFS_V0" if mips && linux => true,
 
+            // File sealing is available as of Linux 3.17, but the test infrastructure lacks these
+            // constants.
+            "F_ADD_SEALS" |
+            "F_GET_SEALS" |
+            "F_SEAL_SEAL" |
+            "F_SEAL_SHRINK" |
+            "F_SEAL_GROW" |
+            "F_SEAL_WRITE" if linux || android => true,
+
             _ => false,
         }
     });

src/unix/notbsd/linux/mod.rs

@@ -315,8 +315,6 @@ pub const RTLD_NOW: ::c_int = 0x2;
 
 pub const TCP_MD5SIG: ::c_int = 14;
 
-pub const F_DUPFD_CLOEXEC: ::c_int = 1030;
-
 pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
     __align: [],
     size: [0; __SIZEOF_PTHREAD_MUTEX_T],

src/unix/notbsd/mod.rs

@@ -161,6 +161,21 @@ pub const F_SETFD: ::c_int = 2;
 pub const F_GETFL: ::c_int = 3;
 pub const F_SETFL: ::c_int = 4;
 
+// Linux-specific fcntls
+pub const F_SETLEASE: ::c_int = 1024;
+pub const F_GETLEASE: ::c_int = 1025;
+pub const F_NOTIFY: ::c_int = 1026;
+pub const F_DUPFD_CLOEXEC: ::c_int = 1030;
+pub const F_SETPIPE_SZ: ::c_int = 1031;
+pub const F_GETPIPE_SZ: ::c_int = 1032;
+pub const F_ADD_SEALS: ::c_int = 1033;
+pub const F_GET_SEALS: ::c_int = 1034;
+
+pub const F_SEAL_SEAL: ::c_int = 0x0001;
+pub const F_SEAL_SHRINK: ::c_int = 0x0002;
+pub const F_SEAL_GROW: ::c_int = 0x0004;
+pub const F_SEAL_WRITE: ::c_int = 0x0008;
+
 pub const SIGTRAP: ::c_int = 5;
 
 pub const PTHREAD_CREATE_JOINABLE: ::c_int = 0;