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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id l27-v6sm17808087pfi.42.2018.07.16.03.24.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 16 Jul 2018 03:24:44 -0700 (PDT) From: Firoz Khan To: linux-alpha@vger.kernel.org, rth@twiddle.net, ink@jurassic.park.msu.ru, mattst88@gmail.com Cc: y2038@lists.linaro.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, arnd@arndb.de, deepa.kernel@gmail.com, Firoz Khan Subject: [PATCH 2/6] alpha: Add CONFIG_OSF4_COMPAT for compat syscall support Date: Mon, 16 Jul 2018 15:53:54 +0530 Message-Id: <1531736638-15294-3-git-send-email-firoz.khan@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1531736638-15294-1-git-send-email-firoz.khan@linaro.org> References: <1531736638-15294-1-git-send-email-firoz.khan@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Removed the CONFIG_OSF4_COMPAT check from systbls.S and kept it in osf_sys.c, so it will provide the same system call support. To do so, we can keep a generic formatted system call table file across all architectures. Signed-off-by: Firoz Khan --- arch/alpha/kernel/osf_sys.c | 9 ++++++--- arch/alpha/kernel/systbls.S | 5 ----- 2 files changed, 6 insertions(+), 8 deletions(-) diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c index 6e92175..696a6b7 100644 --- a/arch/alpha/kernel/osf_sys.c +++ b/arch/alpha/kernel/osf_sys.c @@ -1349,7 +1349,6 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, } #ifdef CONFIG_OSF4_COMPAT - /* Clear top 32 bits of iov_len in the user's buffer for compatibility with old versions of OSF/1 where iov_len was defined as int. */ @@ -1366,27 +1365,31 @@ osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) } return 0; } +#endif SYSCALL_DEFINE3(osf_readv, unsigned long, fd, const struct iovec __user *, vector, unsigned long, count) { +#ifdef CONFIG_OSF4_COMPAT if (unlikely(personality(current->personality) == PER_OSF4)) if (osf_fix_iov_len(vector, count)) return -EFAULT; +#endif + return sys_readv(fd, vector, count); } SYSCALL_DEFINE3(osf_writev, unsigned long, fd, const struct iovec __user *, vector, unsigned long, count) { +#ifdef CONFIG_OSF4_COMPAT if (unlikely(personality(current->personality) == PER_OSF4)) if (osf_fix_iov_len(vector, count)) return -EFAULT; +#endif return sys_writev(fd, vector, count); } -#endif - SYSCALL_DEFINE2(osf_getpriority, int, which, int, who) { int prio = sys_getpriority(which, who); diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S index 1374e59..fcf2f60 100644 --- a/arch/alpha/kernel/systbls.S +++ b/arch/alpha/kernel/systbls.S @@ -132,13 +132,8 @@ sys_call_table: .quad sys_osf_getrusage .quad sys_getsockopt .quad alpha_ni_syscall -#ifdef CONFIG_OSF4_COMPAT .quad sys_osf_readv /* 120 */ .quad sys_osf_writev -#else - .quad sys_readv /* 120 */ - .quad sys_writev -#endif .quad sys_osf_settimeofday .quad sys_fchown .quad sys_fchmod -- 2.7.4