linux-kernel - [PATCH 05/15] alpha: update syscall macro definitions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190110162435.309262-6-arnd@arndb.de>
Date:   Thu, 10 Jan 2019 17:24:25 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     y2038@...ts.linaro.org, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Arnd Bergmann <arnd@...db.de>, ink@...assic.park.msu.ru,
        mattst88@...il.com, linux@...linux.org.uk, catalin.marinas@....com,
        will.deacon@....com, tony.luck@...el.com, fenghua.yu@...el.com,
        geert@...ux-m68k.org, monstr@...str.eu, paul.burton@...s.com,
        deller@....de, mpe@...erman.id.au, schwidefsky@...ibm.com,
        heiko.carstens@...ibm.com, dalias@...c.org, davem@...emloft.net,
        luto@...nel.org, tglx@...utronix.de, mingo@...hat.com,
        hpa@...or.com, x86@...nel.org, jcmvbkbc@...il.com,
        firoz.khan@...aro.org, ebiederm@...ssion.com,
        deepa.kernel@...il.com, linux@...inikbrodowski.net,
        akpm@...ux-foundation.org, dave@...olabs.net,
        linux-alpha@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-ia64@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org
Subject: [PATCH 05/15] alpha: update syscall macro definitions

Other architectures commonly use __NR_umount2 for sys_umount,
only ia64 and alpha use __NR_umount here. In order to synchronize
the generated tables, use umount2 like everyone else, and add back
the old name from asm/unistd.h for compatibility.

For shmat, alpha uses the osf_shmat name, we can do the same thing
here, which means we don't have to add an entry in the __IGNORE
list now that shmat is mandatory everywhere

alarm, creat, pause, time, and utime are optional everywhere
these days, no need to list them here any more.

I considered also adding the regular versions of the get*id system
calls that have different names and calling conventions on alpha,
which would further help unify the syscall ABI, but for now
I decided against that.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/alpha/include/asm/unistd.h        | 6 ------
 arch/alpha/include/uapi/asm/unistd.h   | 5 +++++
 arch/alpha/kernel/syscalls/syscall.tbl | 4 ++--
 3 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h
index 21b706a5b772..564ba87bdc38 100644
--- a/arch/alpha/include/asm/unistd.h
+++ b/arch/alpha/include/asm/unistd.h
@@ -22,18 +22,12 @@
 /*
  * Ignore legacy syscalls that we don't use.
  */
-#define __IGNORE_alarm
-#define __IGNORE_creat
 #define __IGNORE_getegid
 #define __IGNORE_geteuid
 #define __IGNORE_getgid
 #define __IGNORE_getpid
 #define __IGNORE_getppid
 #define __IGNORE_getuid
-#define __IGNORE_pause
-#define __IGNORE_time
-#define __IGNORE_utime
-#define __IGNORE_umount2
 
 /* Alpha doesn't have protection keys. */
 #define __IGNORE_pkey_mprotect
diff --git a/arch/alpha/include/uapi/asm/unistd.h b/arch/alpha/include/uapi/asm/unistd.h
index 9ba724f116f1..4507071f995f 100644
--- a/arch/alpha/include/uapi/asm/unistd.h
+++ b/arch/alpha/include/uapi/asm/unistd.h
@@ -2,6 +2,11 @@
 #ifndef _UAPI_ALPHA_UNISTD_H
 #define _UAPI_ALPHA_UNISTD_H
 
+/* These are traditionally the names linux-alpha uses for
+ * the two otherwise generic system calls */
+#define __NR_umount	__NR_umount2
+#define __NR_osf_shmat	__NR_shmat
+
 #include <asm/unistd_32.h>
 
 #endif /* _UAPI_ALPHA_UNISTD_H */
diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl
index e09558edae73..f920b65e8c49 100644
--- a/arch/alpha/kernel/syscalls/syscall.tbl
+++ b/arch/alpha/kernel/syscalls/syscall.tbl
@@ -29,7 +29,7 @@
 19	common	lseek				sys_lseek
 20	common	getxpid				sys_getxpid
 21	common	osf_mount			sys_osf_mount
-22	common	umount				sys_umount
+22	common	umount2				sys_umount
 23	common	setuid				sys_setuid
 24	common	getxuid				sys_getxuid
 25	common	exec_with_loader		sys_ni_syscall
@@ -183,7 +183,7 @@
 206	common	semop				sys_semop
 207	common	osf_utsname			sys_osf_utsname
 208	common	lchown				sys_lchown
-209	common	osf_shmat			sys_shmat
+209	common	shmat				sys_shmat
 210	common	shmctl				sys_shmctl
 211	common	shmdt				sys_shmdt
 212	common	shmget				sys_shmget
-- 
2.20.0