From: Szabolcs Nagy <nsz@port70.net>
To: musl@lists.openwall.com
Subject: Re: [PATCH 0/7] updates for linux v5.2
Date: Tue, 20 Aug 2019 22:17:39 +0200 [thread overview]
Message-ID: <20190820201739.GO22009@port70.net> (raw)
In-Reply-To: <20190820191221.GF9017@brightrain.aerifal.cx>
[-- Attachment #1: Type: text/plain, Size: 1586 bytes --]
* Rich Felker <dalias@libc.org> [2019-08-20 15:12:21 -0400]:
> We already have the first two, under BSD||GNU. Note that non-exposure
> under plain POSIX is not a choice here; AT_* is (perhaps wrongly, by
> oversight) not in the reserved namespace for fcntl.h.
>
> I'm not sure if GNU-only is better than BSD||GNU; my leaning is
> towards keeping the latter.
ok.
> I think this is okay for now, but now that Linux has unified syscall
> numbers for all future syscalls, I wonder if we should add a
> bits/syscall_common.h or something that defines all the common ones in
> terms of some base macro, so that we don't have O(nm) growth here.
yes that would be useful.
> As before, the _OLD/_NEW names aren't needed for userspace. Rather the
> definition of the unadorned macro has to be changed from the old value
> to the new one when the time64 switchover happens (missing from the
> RFC/POC i386 commit in the "final time64 switch-over patch series"
> thread -- this needs fixing). The _OLD versions are already defined
> privately in arch/*/syscall_arch.h for 32-bit archs since commit
> 2e554617e5a6a41bf3f6c6306c753cd53abf728c, so ioctl.c can use them for
> translation.
ok.
> Also, I don't think it matters whether the _IOR macro is used or not
> since the naive switchover will require per-arch ioctl bits for all
> 32-bit archs, but maybe we can come up with a way to share some of the
> bits stuff between them and prevent introduction of new redundancy.
> Thoughts?
i see.
v2:
- AT_STATX_* are moved under _BSD_SOURCE|_GNU_SOURCE
- time_t related ioctl patch is dropped
[-- Attachment #2: 0001-netinet-if_ether.h-add-ETH_P_DSA_8021Q-from-linux-v5.patch --]
[-- Type: text/x-diff, Size: 829 bytes --]
From 00ba9e1b85882e9420d6188099820de1c982b518 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Mon, 12 Aug 2019 17:37:48 +0000
Subject: [PATCH 1/6] netinet/if_ether.h: add ETH_P_DSA_8021Q from linux v5.2
ethertype for fake VLAN header for DSA, see
linux commit bf5bc3ce8a8f32a0d45b6820ede8f9fc3e9c23df
ether: Add dedicated Ethertype for pseudo-802.1Q DSA tagging
---
include/netinet/if_ether.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/netinet/if_ether.h b/include/netinet/if_ether.h
index ecd6c73c..8af47dbe 100644
--- a/include/netinet/if_ether.h
+++ b/include/netinet/if_ether.h
@@ -76,6 +76,7 @@
#define ETH_P_QINQ2 0x9200
#define ETH_P_QINQ3 0x9300
#define ETH_P_EDSA 0xDADA
+#define ETH_P_DSA_8021Q 0xDADB
#define ETH_P_IFE 0xED3E
#define ETH_P_AF_IUCV 0xFBFB
--
2.21.0
[-- Attachment #3: 0002-sched.h-add-CLONE_PIDFD-from-linux-v5.2.patch --]
[-- Type: text/x-diff, Size: 805 bytes --]
From c9df1957cd87e195fe0939fbea98b4415d3d28f8 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Mon, 12 Aug 2019 17:57:42 +0000
Subject: [PATCH 2/6] sched.h: add CLONE_PIDFD from linux v5.2
when set a pidfd is stored in parent_tidptr, see
linux commit b3e5838252665ee4cfa76b82bdf1198dca81e5be
clone: add CLONE_PIDFD
---
include/sched.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/sched.h b/include/sched.h
index 674bad7f..7e470d3a 100644
--- a/include/sched.h
+++ b/include/sched.h
@@ -49,6 +49,7 @@ int sched_yield(void);
#define CLONE_FS 0x00000200
#define CLONE_FILES 0x00000400
#define CLONE_SIGHAND 0x00000800
+#define CLONE_PIDFD 0x00001000
#define CLONE_PTRACE 0x00002000
#define CLONE_VFORK 0x00004000
#define CLONE_PARENT 0x00008000
--
2.21.0
[-- Attachment #4: 0003-fcntl.h-add-AT_STATX_-statx-sync-flag-definitions.patch --]
[-- Type: text/x-diff, Size: 1014 bytes --]
From 6841e2ab8bc7966da53f6034e69c3a484b9ad5f3 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Mon, 12 Aug 2019 18:21:47 +0000
Subject: [PATCH 3/6] fcntl.h: add AT_STATX_ statx sync flag definitions
see
linux commit a528d35e8bfcc521d7cb70aaf03e1bd296c8493f
statx: Add a system call to make enhanced file info available
these are linux specific and not reserved names for fcntl.h so they
are under _BSD_SOURCE|_GNU_SOURCE.
---
include/fcntl.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/fcntl.h b/include/fcntl.h
index af293405..6c793b28 100644
--- a/include/fcntl.h
+++ b/include/fcntl.h
@@ -100,6 +100,10 @@ int posix_fallocate(int, off_t, off_t);
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define AT_NO_AUTOMOUNT 0x800
#define AT_EMPTY_PATH 0x1000
+#define AT_STATX_SYNC_TYPE 0x6000
+#define AT_STATX_SYNC_AS_STAT 0x0000
+#define AT_STATX_FORCE_SYNC 0x2000
+#define AT_STATX_DONT_SYNC 0x4000
#define FAPPEND O_APPEND
#define FFSYNC O_SYNC
--
2.21.0
[-- Attachment #5: 0004-fcntl.h-add-AT_RECURSIVE-from-linux-v5.2.patch --]
[-- Type: text/x-diff, Size: 843 bytes --]
From f064b8c36b0552cb1f40ed5a0726891a09c39f21 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Mon, 12 Aug 2019 18:30:00 +0000
Subject: [PATCH 4/6] fcntl.h: add AT_RECURSIVE from linux v5.2
apply open_tree with OPEN_TREE_CLONE call to the entire subtree, see
linux commit a07b20004793d8926f78d63eb5980559f7813404
vfs: syscall: Add open_tree(2) to reference or clone a mount
---
include/fcntl.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/fcntl.h b/include/fcntl.h
index 6c793b28..b664cdc4 100644
--- a/include/fcntl.h
+++ b/include/fcntl.h
@@ -104,6 +104,7 @@ int posix_fallocate(int, off_t, off_t);
#define AT_STATX_SYNC_AS_STAT 0x0000
#define AT_STATX_FORCE_SYNC 0x2000
#define AT_STATX_DONT_SYNC 0x4000
+#define AT_RECURSIVE 0x8000
#define FAPPEND O_APPEND
#define FFSYNC O_SYNC
--
2.21.0
[-- Attachment #6: 0005-add-new-syscall-numbers-from-linux-v5.2.patch --]
[-- Type: text/x-diff, Size: 10099 bytes --]
From 211c700f9d08cd425d3b3da6f20ef7d344993d8f Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Mon, 12 Aug 2019 18:48:35 +0000
Subject: [PATCH 5/6] add new syscall numbers from linux v5.2
new mount api syscalls were added, same numers on all targets, see
linux commit a07b20004793d8926f78d63eb5980559f7813404
vfs: syscall: Add open_tree(2) to reference or clone a mount
linux commit 2db154b3ea8e14b04fee23e3fdfd5e9d17fbc6ae
vfs: syscall: Add move_mount(2) to move mounts around
linux commit 24dcb3d90a1f67fe08c68a004af37df059d74005
vfs: syscall: Add fsopen() to prepare for superblock creation
linux commit ecdab150fddb42fe6a739335257949220033b782
vfs: syscall: Add fsconfig() for configuring and managing a context
linux commit 93766fbd2696c2c4453dd8e1070977e9cd4e6b6d
vfs: syscall: Add fsmount() to create a mount for a superblock
linux commit cf3cba4a429be43e5527a3f78859b1bfd9ebc5fb
vfs: syscall: Add fspick() to select a superblock for reconfiguration
linux commit 9c8ad7a2ff0bfe58f019ec0abc1fb965114dde7d
uapi, x86: Fix the syscall numbering of the mount API syscalls [ver #2]
linux commit d8076bdb56af5e5918376cd1573a6b0007fc1a89
uapi: Wire up the mount API syscalls on non-x86 arches [ver #2]
---
arch/aarch64/bits/syscall.h.in | 6 ++++++
arch/arm/bits/syscall.h.in | 6 ++++++
arch/i386/bits/syscall.h.in | 6 ++++++
arch/m68k/bits/syscall.h.in | 6 ++++++
arch/microblaze/bits/syscall.h.in | 6 ++++++
arch/mips/bits/syscall.h.in | 6 ++++++
arch/mips64/bits/syscall.h.in | 6 ++++++
arch/mipsn32/bits/syscall.h.in | 6 ++++++
arch/or1k/bits/syscall.h.in | 6 ++++++
arch/powerpc/bits/syscall.h.in | 6 ++++++
arch/powerpc64/bits/syscall.h.in | 6 ++++++
arch/riscv64/bits/syscall.h.in | 7 +++++++
arch/s390x/bits/syscall.h.in | 6 ++++++
arch/sh/bits/syscall.h.in | 6 ++++++
arch/x32/bits/syscall.h.in | 6 ++++++
arch/x86_64/bits/syscall.h.in | 6 ++++++
16 files changed, 97 insertions(+)
diff --git a/arch/aarch64/bits/syscall.h.in b/arch/aarch64/bits/syscall.h.in
index eed5a612..955e2cab 100644
--- a/arch/aarch64/bits/syscall.h.in
+++ b/arch/aarch64/bits/syscall.h.in
@@ -281,4 +281,10 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
diff --git a/arch/arm/bits/syscall.h.in b/arch/arm/bits/syscall.h.in
index 8ce1d70a..a565a4ee 100644
--- a/arch/arm/bits/syscall.h.in
+++ b/arch/arm/bits/syscall.h.in
@@ -381,6 +381,12 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
#define __ARM_NR_breakpoint 0x0f0001
#define __ARM_NR_cacheflush 0x0f0002
diff --git a/arch/i386/bits/syscall.h.in b/arch/i386/bits/syscall.h.in
index fdfdc710..c95e108e 100644
--- a/arch/i386/bits/syscall.h.in
+++ b/arch/i386/bits/syscall.h.in
@@ -418,4 +418,10 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
diff --git a/arch/m68k/bits/syscall.h.in b/arch/m68k/bits/syscall.h.in
index c7859b99..fb522b48 100644
--- a/arch/m68k/bits/syscall.h.in
+++ b/arch/m68k/bits/syscall.h.in
@@ -398,3 +398,9 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
diff --git a/arch/microblaze/bits/syscall.h.in b/arch/microblaze/bits/syscall.h.in
index 91bc244e..59f86236 100644
--- a/arch/microblaze/bits/syscall.h.in
+++ b/arch/microblaze/bits/syscall.h.in
@@ -419,4 +419,10 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
diff --git a/arch/mips/bits/syscall.h.in b/arch/mips/bits/syscall.h.in
index 6175a7c2..582fa3b5 100644
--- a/arch/mips/bits/syscall.h.in
+++ b/arch/mips/bits/syscall.h.in
@@ -400,4 +400,10 @@
#define __NR_io_uring_setup 4425
#define __NR_io_uring_enter 4426
#define __NR_io_uring_register 4427
+#define __NR_open_tree 4428
+#define __NR_move_mount 4429
+#define __NR_fsopen 4430
+#define __NR_fsconfig 4431
+#define __NR_fsmount 4432
+#define __NR_fspick 4433
diff --git a/arch/mips64/bits/syscall.h.in b/arch/mips64/bits/syscall.h.in
index ca99e453..34b9752e 100644
--- a/arch/mips64/bits/syscall.h.in
+++ b/arch/mips64/bits/syscall.h.in
@@ -330,4 +330,10 @@
#define __NR_io_uring_setup 5425
#define __NR_io_uring_enter 5426
#define __NR_io_uring_register 5427
+#define __NR_open_tree 5428
+#define __NR_move_mount 5429
+#define __NR_fsopen 5430
+#define __NR_fsconfig 5431
+#define __NR_fsmount 5432
+#define __NR_fspick 5433
diff --git a/arch/mipsn32/bits/syscall.h.in b/arch/mipsn32/bits/syscall.h.in
index f31ee446..d80cafa8 100644
--- a/arch/mipsn32/bits/syscall.h.in
+++ b/arch/mipsn32/bits/syscall.h.in
@@ -354,4 +354,10 @@
#define __NR_io_uring_setup 6425
#define __NR_io_uring_enter 6426
#define __NR_io_uring_register 6427
+#define __NR_open_tree 6428
+#define __NR_move_mount 6429
+#define __NR_fsopen 6430
+#define __NR_fsconfig 6431
+#define __NR_fsmount 6432
+#define __NR_fspick 6433
diff --git a/arch/or1k/bits/syscall.h.in b/arch/or1k/bits/syscall.h.in
index 33a86861..8ffcfae8 100644
--- a/arch/or1k/bits/syscall.h.in
+++ b/arch/or1k/bits/syscall.h.in
@@ -303,4 +303,10 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
diff --git a/arch/powerpc/bits/syscall.h.in b/arch/powerpc/bits/syscall.h.in
index 0a6c9add..adcf63db 100644
--- a/arch/powerpc/bits/syscall.h.in
+++ b/arch/powerpc/bits/syscall.h.in
@@ -407,4 +407,10 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
diff --git a/arch/powerpc64/bits/syscall.h.in b/arch/powerpc64/bits/syscall.h.in
index 0c894a23..32545b39 100644
--- a/arch/powerpc64/bits/syscall.h.in
+++ b/arch/powerpc64/bits/syscall.h.in
@@ -379,4 +379,10 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
diff --git a/arch/riscv64/bits/syscall.h.in b/arch/riscv64/bits/syscall.h.in
index 0de1278b..1db70cfb 100644
--- a/arch/riscv64/bits/syscall.h.in
+++ b/arch/riscv64/bits/syscall.h.in
@@ -281,5 +281,12 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
+
#define __NR_sysriscv __NR_arch_specific_syscall
#define __NR_riscv_flush_icache (__NR_sysriscv + 15)
diff --git a/arch/s390x/bits/syscall.h.in b/arch/s390x/bits/syscall.h.in
index 72fd2cce..c4c70474 100644
--- a/arch/s390x/bits/syscall.h.in
+++ b/arch/s390x/bits/syscall.h.in
@@ -344,4 +344,10 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
diff --git a/arch/sh/bits/syscall.h.in b/arch/sh/bits/syscall.h.in
index ad35fc64..4705ef93 100644
--- a/arch/sh/bits/syscall.h.in
+++ b/arch/sh/bits/syscall.h.in
@@ -391,4 +391,10 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
diff --git a/arch/x32/bits/syscall.h.in b/arch/x32/bits/syscall.h.in
index 77ec432f..4d72852e 100644
--- a/arch/x32/bits/syscall.h.in
+++ b/arch/x32/bits/syscall.h.in
@@ -290,6 +290,12 @@
#define __NR_io_uring_setup (0x40000000 + 425)
#define __NR_io_uring_enter (0x40000000 + 426)
#define __NR_io_uring_register (0x40000000 + 427)
+#define __NR_open_tree (0x40000000 + 428)
+#define __NR_move_mount (0x40000000 + 429)
+#define __NR_fsopen (0x40000000 + 430)
+#define __NR_fsconfig (0x40000000 + 431)
+#define __NR_fsmount (0x40000000 + 432)
+#define __NR_fspick (0x40000000 + 433)
#define __NR_rt_sigaction (0x40000000 + 512)
#define __NR_rt_sigreturn (0x40000000 + 513)
diff --git a/arch/x86_64/bits/syscall.h.in b/arch/x86_64/bits/syscall.h.in
index 49572ef2..2d4634f6 100644
--- a/arch/x86_64/bits/syscall.h.in
+++ b/arch/x86_64/bits/syscall.h.in
@@ -337,4 +337,10 @@
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
--
2.21.0
[-- Attachment #7: 0006-aarch64-add-HWCAP2-flags-from-linux-v5.2.patch --]
[-- Type: text/x-diff, Size: 1029 bytes --]
From f9a8191736c0b7e6b629b8409278887d3b0eb56f Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Tue, 20 Aug 2019 10:20:03 +0000
Subject: [PATCH 6/6] aarch64: add HWCAP2 flags from linux v5.2
AT_HWCAP2 flags, see
linux commit 671db581815faf17cbedd7fcbc48823a247d90b1
arm64: Expose DC CVADP to userspace
linux commit 06a916feca2b262ab0c1a2aeb68882f4b1108a07
arm64: Expose SVE2 features for userspace
---
arch/aarch64/bits/hwcap.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/aarch64/bits/hwcap.h b/arch/aarch64/bits/hwcap.h
index ad670914..a7484028 100644
--- a/arch/aarch64/bits/hwcap.h
+++ b/arch/aarch64/bits/hwcap.h
@@ -30,3 +30,11 @@
#define HWCAP_SB (1 << 29)
#define HWCAP_PACA (1 << 30)
#define HWCAP_PACG (1UL << 31)
+
+#define HWCAP2_DCPODP (1 << 0)
+#define HWCAP2_SVE2 (1 << 1)
+#define HWCAP2_SVEAES (1 << 2)
+#define HWCAP2_SVEPMULL (1 << 3)
+#define HWCAP2_SVEBITPERM (1 << 4)
+#define HWCAP2_SVESHA3 (1 << 5)
+#define HWCAP2_SVESM4 (1 << 6)
--
2.21.0
prev parent reply other threads:[~2019-08-20 20:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 10:31 Szabolcs Nagy
2019-08-20 19:12 ` Rich Felker
2019-08-20 20:17 ` Szabolcs Nagy [this message]
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