[PATCH v2 2/5] alpha: remove CONFIG_OSF4_COMPAT flag from syscall table

From: Firoz Khan
Date: Thu Nov 01 2018 - 09:44:25 EST


Remove CONFIG_OSF4_COMPAT config flag from system call
table - systbls.S and to keep the same feature, add the
flag in osf_sys.c.

One of the patch in this patch series will generate the
system call table file. In order to come up with a common
implementation across all architecture, we need this change.

Signed-off-by: Firoz Khan <firoz.khan@xxxxxxxxxx>
---
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 cff52d8..4a147bf 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1343,7 +1343,6 @@ struct timex32 {
}

#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. */
@@ -1360,27 +1359,31 @@ struct timex32 {
}
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
--
1.9.1