574 lines
19 KiB
C
574 lines
19 KiB
C
/*
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* sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
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*
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* Copyright (C) 2001 IBM
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* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
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*
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* These routines maintain argument size conversion between 32bit and 64bit
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* environment.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/file.h>
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#include <linux/signal.h>
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#include <linux/resource.h>
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#include <linux/times.h>
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#include <linux/smp.h>
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#include <linux/sem.h>
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#include <linux/msg.h>
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#include <linux/shm.h>
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#include <linux/poll.h>
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#include <linux/personality.h>
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#include <linux/stat.h>
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#include <linux/mman.h>
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#include <linux/in.h>
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#include <linux/syscalls.h>
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#include <linux/unistd.h>
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#include <linux/sysctl.h>
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#include <linux/binfmts.h>
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#include <linux/security.h>
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#include <linux/compat.h>
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#include <linux/ptrace.h>
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#include <linux/elf.h>
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#include <linux/ipc.h>
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#include <linux/slab.h>
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#include <asm/ptrace.h>
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#include <asm/types.h>
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#include <asm/uaccess.h>
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#include <asm/unistd.h>
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#include <asm/time.h>
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#include <asm/mmu_context.h>
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#include <asm/ppc-pci.h>
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#include <asm/syscalls.h>
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#include <asm/switch_to.h>
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asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
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compat_ulong_t __user *outp, compat_ulong_t __user *exp,
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compat_uptr_t tvp_x)
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{
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/* sign extend n */
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return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
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}
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/* Note: it is necessary to treat option as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sysfs(u32 option, u32 arg1, u32 arg2)
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{
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return sys_sysfs((int)option, arg1, arg2);
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}
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#ifdef CONFIG_SYSVIPC
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long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
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u32 fifth)
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{
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int version;
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version = call >> 16; /* hack for backward compatibility */
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call &= 0xffff;
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switch (call) {
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case SEMTIMEDOP:
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if (fifth)
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/* sign extend semid */
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return compat_sys_semtimedop((int)first,
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compat_ptr(ptr), second,
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compat_ptr(fifth));
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/* else fall through for normal semop() */
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case SEMOP:
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/* struct sembuf is the same on 32 and 64bit :)) */
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/* sign extend semid */
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return sys_semtimedop((int)first, compat_ptr(ptr), second,
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NULL);
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case SEMGET:
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/* sign extend key, nsems */
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return sys_semget((int)first, (int)second, third);
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case SEMCTL:
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/* sign extend semid, semnum */
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return compat_sys_semctl((int)first, (int)second, third,
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compat_ptr(ptr));
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case MSGSND:
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/* sign extend msqid */
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return compat_sys_msgsnd((int)first, (int)second, third,
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compat_ptr(ptr));
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case MSGRCV:
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/* sign extend msqid, msgtyp */
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return compat_sys_msgrcv((int)first, second, (int)fifth,
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third, version, compat_ptr(ptr));
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case MSGGET:
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/* sign extend key */
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return sys_msgget((int)first, second);
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case MSGCTL:
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/* sign extend msqid */
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return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
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case SHMAT:
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/* sign extend shmid */
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return compat_sys_shmat((int)first, second, third, version,
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compat_ptr(ptr));
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case SHMDT:
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return sys_shmdt(compat_ptr(ptr));
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case SHMGET:
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/* sign extend key_t */
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return sys_shmget((int)first, second, third);
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case SHMCTL:
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/* sign extend shmid */
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return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
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default:
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return -ENOSYS;
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}
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return -ENOSYS;
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}
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#endif
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/* Note: it is necessary to treat out_fd and in_fd as unsigned ints,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sendfile_wrapper(u32 out_fd, u32 in_fd,
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compat_off_t __user *offset, u32 count)
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{
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return compat_sys_sendfile((int)out_fd, (int)in_fd, offset, count);
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}
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asmlinkage long compat_sys_sendfile64_wrapper(u32 out_fd, u32 in_fd,
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compat_loff_t __user *offset, u32 count)
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{
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return sys_sendfile((int)out_fd, (int)in_fd,
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(off_t __user *)offset, count);
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}
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/* Note: it is necessary to treat option as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
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{
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return sys_prctl((int)option,
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(unsigned long) arg2,
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(unsigned long) arg3,
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(unsigned long) arg4,
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(unsigned long) arg5);
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}
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/* Note: it is necessary to treat pid as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
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{
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struct timespec t;
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int ret;
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mm_segment_t old_fs = get_fs ();
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/* The __user pointer cast is valid because of the set_fs() */
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set_fs (KERNEL_DS);
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ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
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set_fs (old_fs);
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if (put_compat_timespec(&t, interval))
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return -EFAULT;
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return ret;
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}
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/* Note: it is necessary to treat mode as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_access(const char __user * filename, u32 mode)
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{
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return sys_access(filename, (int)mode);
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}
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/* Note: it is necessary to treat mode as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_creat(const char __user * pathname, u32 mode)
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{
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return sys_creat(pathname, (int)mode);
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}
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/* Note: it is necessary to treat pid and options as unsigned ints,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
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{
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return sys_waitpid((int)pid, stat_addr, (int)options);
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}
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/* Note: it is necessary to treat gidsetsize as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_getgroups(u32 gidsetsize, gid_t __user *grouplist)
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{
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return sys_getgroups((int)gidsetsize, grouplist);
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}
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/* Note: it is necessary to treat pid as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_getpgid(u32 pid)
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{
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return sys_getpgid((int)pid);
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}
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/* Note: it is necessary to treat pid as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_getsid(u32 pid)
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{
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return sys_getsid((int)pid);
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}
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/* Note: it is necessary to treat pid and sig as unsigned ints,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_kill(u32 pid, u32 sig)
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{
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return sys_kill((int)pid, (int)sig);
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}
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/* Note: it is necessary to treat mode as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_mkdir(const char __user * pathname, u32 mode)
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{
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return sys_mkdir(pathname, (int)mode);
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}
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long compat_sys_nice(u32 increment)
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{
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/* sign extend increment */
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return sys_nice((int)increment);
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}
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off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
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{
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/* sign extend n */
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return sys_lseek(fd, (int)offset, origin);
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}
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long compat_sys_truncate(const char __user * path, u32 length)
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{
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/* sign extend length */
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return sys_truncate(path, (int)length);
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}
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long compat_sys_ftruncate(int fd, u32 length)
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{
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/* sign extend length */
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return sys_ftruncate(fd, (int)length);
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}
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/* Note: it is necessary to treat bufsiz as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_readlink(const char __user * path, char __user * buf, u32 bufsiz)
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{
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return sys_readlink(path, buf, (int)bufsiz);
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}
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/* Note: it is necessary to treat option as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sched_get_priority_max(u32 policy)
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{
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return sys_sched_get_priority_max((int)policy);
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}
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/* Note: it is necessary to treat policy as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sched_get_priority_min(u32 policy)
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{
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return sys_sched_get_priority_min((int)policy);
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}
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/* Note: it is necessary to treat pid as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sched_getparam(u32 pid, struct sched_param __user *param)
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{
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return sys_sched_getparam((int)pid, param);
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}
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/* Note: it is necessary to treat pid as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sched_getscheduler(u32 pid)
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{
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return sys_sched_getscheduler((int)pid);
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}
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/* Note: it is necessary to treat pid as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sched_setparam(u32 pid, struct sched_param __user *param)
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{
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return sys_sched_setparam((int)pid, param);
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}
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/* Note: it is necessary to treat pid and policy as unsigned ints,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
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{
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return sys_sched_setscheduler((int)pid, (int)policy, param);
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}
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/* Note: it is necessary to treat len as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_setdomainname(char __user *name, u32 len)
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{
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return sys_setdomainname(name, (int)len);
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}
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/* Note: it is necessary to treat gidsetsize as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_setgroups(u32 gidsetsize, gid_t __user *grouplist)
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{
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return sys_setgroups((int)gidsetsize, grouplist);
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}
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asmlinkage long compat_sys_sethostname(char __user *name, u32 len)
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{
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/* sign extend len */
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return sys_sethostname(name, (int)len);
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}
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/* Note: it is necessary to treat pid and pgid as unsigned ints,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_setpgid(u32 pid, u32 pgid)
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{
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return sys_setpgid((int)pid, (int)pgid);
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}
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long compat_sys_getpriority(u32 which, u32 who)
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{
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/* sign extend which and who */
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return sys_getpriority((int)which, (int)who);
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}
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long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
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{
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/* sign extend which, who and niceval */
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return sys_setpriority((int)which, (int)who, (int)niceval);
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}
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long compat_sys_ioprio_get(u32 which, u32 who)
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{
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/* sign extend which and who */
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return sys_ioprio_get((int)which, (int)who);
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}
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long compat_sys_ioprio_set(u32 which, u32 who, u32 ioprio)
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{
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/* sign extend which, who and ioprio */
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return sys_ioprio_set((int)which, (int)who, (int)ioprio);
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}
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/* Note: it is necessary to treat newmask as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_ssetmask(u32 newmask)
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{
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return sys_ssetmask((int) newmask);
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}
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asmlinkage long compat_sys_syslog(u32 type, char __user * buf, u32 len)
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{
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/* sign extend len */
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return sys_syslog(type, buf, (int)len);
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}
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/* Note: it is necessary to treat mask as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_umask(u32 mask)
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{
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return sys_umask((int)mask);
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}
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unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
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unsigned long prot, unsigned long flags,
|
|
unsigned long fd, unsigned long pgoff)
|
|
{
|
|
/* This should remain 12 even if PAGE_SIZE changes */
|
|
return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
|
|
}
|
|
|
|
long compat_sys_tgkill(u32 tgid, u32 pid, int sig)
|
|
{
|
|
/* sign extend tgid, pid */
|
|
return sys_tgkill((int)tgid, (int)pid, sig);
|
|
}
|
|
|
|
/*
|
|
* long long munging:
|
|
* The 32 bit ABI passes long longs in an odd even register pair.
|
|
*/
|
|
|
|
compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
|
|
u32 reg6, u32 poshi, u32 poslo)
|
|
{
|
|
return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
|
|
}
|
|
|
|
compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count,
|
|
u32 reg6, u32 poshi, u32 poslo)
|
|
{
|
|
return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
|
|
}
|
|
|
|
compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
|
|
{
|
|
return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
|
|
}
|
|
|
|
asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
|
|
unsigned long high, unsigned long low)
|
|
{
|
|
return sys_truncate(path, (high << 32) | low);
|
|
}
|
|
|
|
asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
|
|
u32 lenhi, u32 lenlo)
|
|
{
|
|
return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
|
|
((loff_t)lenhi << 32) | lenlo);
|
|
}
|
|
|
|
asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
|
|
unsigned long low)
|
|
{
|
|
return sys_ftruncate(fd, (high << 32) | low);
|
|
}
|
|
|
|
long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
|
|
size_t len)
|
|
{
|
|
return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
|
|
buf, len);
|
|
}
|
|
|
|
long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
|
|
size_t len, int advice)
|
|
{
|
|
return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
|
|
advice);
|
|
}
|
|
|
|
asmlinkage long compat_sys_add_key(const char __user *_type,
|
|
const char __user *_description,
|
|
const void __user *_payload,
|
|
u32 plen,
|
|
u32 ringid)
|
|
{
|
|
return sys_add_key(_type, _description, _payload, plen, ringid);
|
|
}
|
|
|
|
asmlinkage long compat_sys_request_key(const char __user *_type,
|
|
const char __user *_description,
|
|
const char __user *_callout_info,
|
|
u32 destringid)
|
|
{
|
|
return sys_request_key(_type, _description, _callout_info, destringid);
|
|
}
|
|
|
|
asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
|
|
unsigned offset_hi, unsigned offset_lo,
|
|
unsigned nbytes_hi, unsigned nbytes_lo)
|
|
{
|
|
loff_t offset = ((loff_t)offset_hi << 32) | offset_lo;
|
|
loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo;
|
|
|
|
return sys_sync_file_range(fd, offset, nbytes, flags);
|
|
}
|
|
|
|
asmlinkage long compat_sys_fanotify_mark(int fanotify_fd, unsigned int flags,
|
|
unsigned mask_hi, unsigned mask_lo,
|
|
int dfd, const char __user *pathname)
|
|
{
|
|
u64 mask = ((u64)mask_hi << 32) | mask_lo;
|
|
return sys_fanotify_mark(fanotify_fd, flags, mask, dfd, pathname);
|
|
}
|