ppc64: add sendfile64 support and restore ioperm syscall

arch/ppc64/kernel/misc.S

@@ -605,7 +605,7 @@ _GLOBAL(sys_call_table32)
 	.llong .sys_ni_syscall			/* old profil syscall holder */
 	.llong .sys32_statfs
 	.llong .sys32_fstatfs	/* 100 */
-	.llong .sys_ni_syscall		/* old ioperm syscall holder */
+	.llong .sys_ioperm
 	.llong .sys32_socketcall
 	.llong .sys32_syslog
 	.llong .sys32_setitimer
@@ -730,8 +730,9 @@ _GLOBAL(sys_call_table32)
 	.llong .sys32_sched_getaffinity
 	.llong .sys_ni_syscall		/* reserved for security */
 	.llong .sys_ni_syscall		/* 225 - reserved for tux */
+	.llong .sys32_sendfile64
 
-	.rept NR_syscalls-225
+	.rept NR_syscalls-226
 		.llong .sys_ni_syscall
 	.endr
 #endif
@@ -839,7 +840,7 @@ _GLOBAL(sys_call_table)
 	.llong .sys_ni_syscall			/* old profil syscall holder */
 	.llong .sys_statfs
 	.llong .sys_fstatfs	/* 100 */
-	.llong .sys_ni_syscall		/* old ioperm syscall holder */
+	.llong .sys_ioperm
 	.llong .sys_socketcall
 	.llong .sys_syslog
 	.llong .sys_setitimer
@@ -964,7 +965,8 @@ _GLOBAL(sys_call_table)
 	.llong .sys_sched_getaffinity
 	.llong .sys_ni_syscall		/* reserved for security */
 	.llong .sys_ni_syscall		/* reserved for tux */
+	.llong .sys_ni_syscall		/* reserved for sendfile64 */
 
-	.rept NR_syscalls-225
-	.llong .sys_ni_syscall
+	.rept NR_syscalls-226
+		.llong .sys_ni_syscall
 	.endr

arch/ppc64/kernel/sys_ppc32.c

@@ -2785,6 +2785,27 @@ asmlinkage long sys32_sendfile(u32 out_fd, u32 in_fd, __kernel_off_t32* offset,
 	return ret;
 }
 
+extern asmlinkage ssize_t sys_sendfile64(int out_fd, int in_fd, loff_t *offset, size_t count);
+
+asmlinkage int sys32_sendfile64(int out_fd, int in_fd, __kernel_loff_t32 *offset, s32 count)
+{
+	mm_segment_t old_fs = get_fs();
+	int ret;
+	loff_t lof;
+	
+	if (offset && get_user(lof, offset))
+		return -EFAULT;
+		
+	set_fs(KERNEL_DS);
+	ret = sys_sendfile64(out_fd, in_fd, offset ? &lof : NULL, count);
+	set_fs(old_fs);
+	
+	if (offset && put_user(lof, offset))
+		return -EFAULT;
+		
+	return ret;
+}
+
 extern asmlinkage int sys_setsockopt(int fd, int level, int optname, char *optval, int optlen);
 
 asmlinkage long sys32_setsockopt(int fd, int level, int optname, char* optval, int optlen)
@@ -4249,6 +4270,11 @@ asmlinkage int sys32_sched_getaffinity(__kernel_pid_t32 pid, unsigned int len,
 
 	return ret;
 }
+
+extern unsigned long sys_mmap(unsigned long addr, size_t len,
+			      unsigned long prot, unsigned long flags,
+			      unsigned long fd, off_t offset);
+
 unsigned long sys32_mmap2(unsigned long addr, size_t len,
 			  unsigned long prot, unsigned long flags,
 			  unsigned long fd, unsigned long pgoff)

include/asm-ppc64/unistd.h

@@ -235,6 +235,7 @@
 #define __NR_sched_getaffinity	223
 #define __NR_security		224
 #define __NR_tuxcall		225
+#define __NR_sendfile64		226
 
 #define __NR(n)	#n