linux-kernel - [PATCH] powerpc: Wire up file system mount new syscalls

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Message-Id: <1532699702-15515-1-git-send-email-leitao@debian.org>
Date:   Fri, 27 Jul 2018 10:55:02 -0300
From:   Breno Leitao <leitao@...ian.org>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org, Breno Leitao <leitao@...ian.org>,
        David Howells <dhowells@...hat.com>
Subject: [PATCH] powerpc: Wire up file system mount new syscalls

Wire up the new file system mount syscalls for Powerpc. The new syscall being
contemplated by this patch are those already available in the linux-next tree:
open_tree(), move_mount(), fsopen(), fsmount(), fspick() and fsinfo().

These system calls were tested with David Howells test case[1], as some others I
wrote[2]. For testing purpose, I also made usage of the new, but yet not
integrated, fsconfig() syscall.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit/?h=mount-context&id=2bae6fd63259c5244bd9de1b46cca706c4808438
[2] https://github.com/leitao/mcontext/

CC: David Howells <dhowells@...hat.com>
Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 arch/powerpc/include/asm/systbl.h      | 6 ++++++
 arch/powerpc/include/asm/unistd.h      | 2 +-
 arch/powerpc/include/uapi/asm/unistd.h | 6 ++++++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index 01b5171ea189..68d8dc0f8338 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -394,3 +394,9 @@ SYSCALL(pkey_free)
 SYSCALL(pkey_mprotect)
 SYSCALL(rseq)
 COMPAT_SYS(io_pgetevents)
+SYSCALL(open_tree)
+SYSCALL(move_mount)
+SYSCALL(fsopen)
+SYSCALL(fsmount)
+SYSCALL(fspick)
+SYSCALL(fsinfo)
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
index c19379f0a32e..e6cf3bb0ed2f 100644
--- a/arch/powerpc/include/asm/unistd.h
+++ b/arch/powerpc/include/asm/unistd.h
@@ -12,7 +12,7 @@
 #include <uapi/asm/unistd.h>
 
 
-#define NR_syscalls		389
+#define NR_syscalls		395
 
 #define __NR__exit __NR_exit
 
diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h
index 985534d0b448..89b450c6a246 100644
--- a/arch/powerpc/include/uapi/asm/unistd.h
+++ b/arch/powerpc/include/uapi/asm/unistd.h
@@ -400,5 +400,11 @@
 #define __NR_pkey_mprotect	386
 #define __NR_rseq		387
 #define __NR_io_pgetevents	388
+#define __NR_open_tree		389
+#define __NR_move_mount	390
+#define __NR_fsopen		391
+#define __NR_fsmount		392
+#define __NR_fspick		393
+#define __NR_fsinfo		394
 
 #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */
-- 
2.16.3