Merge pull request #4174 from PaulDance/linux-new-proc-flags

Feat(Linux): Add new process flags

Author: tgross35

libc-test/build.rs

@@ -2003,9 +2003,9 @@ fn test_android(target: &str) {
             | "PF_IO_WORKER"
             | "PF_WQ_WORKER"
             | "PF_FORKNOEXEC"
+            | "PF_MCE_PROCESS"
             | "PF_SUPERPRIV"
             | "PF_DUMPCORE"
-            | "PF_MCE_PROCESS"
             | "PF_SIGNALED"
             | "PF_MEMALLOC"
             | "PF_NPROC_EXCEEDED"
@@ -2021,6 +2021,7 @@ fn test_android(target: &str) {
             | "PF_NO_SETAFFINITY"
             | "PF_MCE_EARLY"
             | "PF_MEMALLOC_PIN"
+            | "PF_BLOCK_TS"
             | "PF_SUSPEND_TASK" => true,
 
             _ => false,
@@ -4240,7 +4241,9 @@ fn test_linux(target: &str) {
             | "PF_RANDOMIZE"
             | "PF_NO_SETAFFINITY"
             | "PF_MCE_EARLY"
-            | "PF_MEMALLOC_PIN" => true,
+            | "PF_MEMALLOC_PIN"
+            | "PF_BLOCK_TS"
+            | "PF_SUSPEND_TASK" => true,
 
             // FIXME: Requires >= 6.9 kernel headers.
             "EPIOCSPARAMS"

libc-test/semver/linux.txt

@@ -2085,40 +2085,67 @@ PF_ASH
 PF_ATMPVC
 PF_ATMSVC
 PF_AX25
+PF_BLOCK_TS
 PF_BLUETOOTH
 PF_BRIDGE
 PF_CAIF
 PF_CAN
 PF_DECnet
+PF_DUMPCORE
 PF_ECONET
+PF_EXITING
+PF_FORKNOEXEC
+PF_IDLE
 PF_IEEE802154
+PF_IO_WORKER
 PF_IPX
 PF_IRDA
 PF_ISDN
 PF_IUCV
 PF_KEY
+PF_KSWAPD
+PF_KTHREAD
 PF_LLC
 PF_LOCAL
+PF_LOCAL_THROTTLE
 PF_MASKOS
 PF_MASKPROC
+PF_MCE_EARLY
+PF_MCE_PROCESS
+PF_MEMALLOC
+PF_MEMALLOC_NOFS
+PF_MEMALLOC_NOIO
+PF_MEMALLOC_PIN
 PF_NETBEUI
 PF_NETLINK
 PF_NETROM
 PF_NFC
+PF_NOFREEZE
+PF_NO_SETAFFINITY
+PF_NPROC_EXCEEDED
 PF_PACKET
 PF_PHONET
+PF_POSTCOREDUMP
 PF_PPPOX
 PF_R
+PF_RANDOMIZE
 PF_RDS
 PF_ROSE
 PF_ROUTE
 PF_RXRPC
 PF_SECURITY
+PF_SIGNALED
 PF_SNA
+PF_SUPERPRIV
+PF_SUSPEND_TASK
 PF_TIPC
+PF_USED_MATH
+PF_USER_WORKER
+PF_VCPU
 PF_VSOCK
 PF_W
 PF_WANPIPE
+PF_WQ_WORKER
 PF_X
 PF_X25
 PIPE_BUF

src/unix/linux_like/linux/mod.rs

@@ -5668,31 +5668,75 @@ pub const NET_DCCP: c_int = 20;
 pub const NET_IRDA: c_int = 412;
 
 // include/linux/sched.h
+/// I'm a virtual CPU.
 pub const PF_VCPU: c_int = 0x00000001;
+/// I am an IDLE thread.
 pub const PF_IDLE: c_int = 0x00000002;
+/// Getting shut down.
 pub const PF_EXITING: c_int = 0x00000004;
+/// Coredumps should ignore this task.
 pub const PF_POSTCOREDUMP: c_int = 0x00000008;
+/// Task is an IO worker.
 pub const PF_IO_WORKER: c_int = 0x00000010;
+/// I'm a workqueue worker.
 pub const PF_WQ_WORKER: c_int = 0x00000020;
+/// Forked but didn't exec.
 pub const PF_FORKNOEXEC: c_int = 0x00000040;
+/// Process policy on mce errors.
 pub const PF_MCE_PROCESS: c_int = 0x00000080;
+/// Used super-user privileges.
 pub const PF_SUPERPRIV: c_int = 0x00000100;
+/// Dumped core.
 pub const PF_DUMPCORE: c_int = 0x00000200;
+/// Killed by a signal.
 pub const PF_SIGNALED: c_int = 0x00000400;
+/// Allocating memory to free memory.
+///
+/// See `memalloc_noreclaim_save()`.
 pub const PF_MEMALLOC: c_int = 0x00000800;
+/// `set_user()` noticed that `RLIMIT_NPROC` was exceeded.
 pub const PF_NPROC_EXCEEDED: c_int = 0x00001000;
+/// If unset the fpu must be initialized before use.
 pub const PF_USED_MATH: c_int = 0x00002000;
+/// Kernel thread cloned from userspace thread.
 pub const PF_USER_WORKER: c_int = 0x00004000;
+/// This thread should not be frozen.
 pub const PF_NOFREEZE: c_int = 0x00008000;
+/// I am `kswapd`.
 pub const PF_KSWAPD: c_int = 0x00020000;
+/// All allocations inherit `GFP_NOFS`.
+///
+/// See `memalloc_nfs_save()`.
 pub const PF_MEMALLOC_NOFS: c_int = 0x00040000;
+/// All allocations inherit `GFP_NOIO`.
+///
+/// See `memalloc_noio_save()`.
 pub const PF_MEMALLOC_NOIO: c_int = 0x00080000;
+/// Throttle writes only against the bdi I write to, I am cleaning
+/// dirty pages from some other bdi.
 pub const PF_LOCAL_THROTTLE: c_int = 0x00100000;
+/// I am a kernel thread.
 pub const PF_KTHREAD: c_int = 0x00200000;
+/// Randomize virtual address space.
 pub const PF_RANDOMIZE: c_int = 0x00400000;
+/// Userland is not allowed to meddle with `cpus_mask`.
 pub const PF_NO_SETAFFINITY: c_int = 0x04000000;
+/// Early kill for mce process policy.
 pub const PF_MCE_EARLY: c_int = 0x08000000;
+/// Allocations constrained to zones which allow long term pinning.
+///
+/// See `memalloc_pin_save()`.
 pub const PF_MEMALLOC_PIN: c_int = 0x10000000;
+/// Plug has ts that needs updating.
+pub const PF_BLOCK_TS: c_int = 0x20000000;
+/// This thread called `freeze_processes()` and should not be frozen.
+pub const PF_SUSPEND_TASK: c_int = PF_SUSPEND_TASK_UINT as _;
+// The used value is the highest possible bit fitting on 32 bits, so directly
+// defining it as a signed integer causes the compiler to report an overflow.
+// Use instead a private intermediary that assuringly has the correct type and
+// cast it where necessary to the wanted final type, which preserves the
+// desired information as-is in terms of integer representation.
+const PF_SUSPEND_TASK_UINT: c_uint = 0x80000000;
 
 pub const CSIGNAL: c_int = 0x000000ff;