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xianfeng |
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1995 - 2000, 2001 by Ralf Baechle
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* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
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* Copyright (C) 2001 MIPS Technologies, Inc.
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* Copyright (C) 2004 Thiemo Seufer
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*
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* Hairy, the userspace application uses a different argument passing
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* convention than the kernel, so we have to translate things from o32
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* to ABI64 calling convention. 64-bit syscalls are also processed
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* here for now.
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*/
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#include
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#include
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#include
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#include
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#include
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#include
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#include
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#include
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#include
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#include
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.align 5
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NESTED(handle_sys, PT_SIZE, sp)
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.set noat
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SAVE_SOME
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TRACE_IRQS_ON_RELOAD
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STI
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.set at
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ld t1, PT_EPC(sp) # skip syscall on return
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dsubu t0, v0, __NR_O32_Linux # check syscall number
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sltiu t0, t0, __NR_O32_Linux_syscalls + 1
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daddiu t1, 4 # skip to next instruction
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sd t1, PT_EPC(sp)
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beqz t0, not_o32_scall
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#if 0
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SAVE_ALL
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move a1, v0
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PRINT("Scall %ld\n")
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RESTORE_ALL
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#endif
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/* We don't want to stumble over broken sign extensions from
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userland. O32 does never use the upper half. */
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sll a0, a0, 0
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sll a1, a1, 0
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sll a2, a2, 0
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sll a3, a3, 0
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dsll t0, v0, 3 # offset into table
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ld t2, (sys_call_table - (__NR_O32_Linux * 8))(t0)
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sd a3, PT_R26(sp) # save a3 for syscall restarting
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/*
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* More than four arguments. Try to deal with it by copying the
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* stack arguments from the user stack to the kernel stack.
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* This Sucks (TM).
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*
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* We intentionally keep the kernel stack a little below the top of
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* userspace so we don't have to do a slower byte accurate check here.
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*/
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ld t0, PT_R29(sp) # get old user stack pointer
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daddu t1, t0, 32
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bltz t1, bad_stack
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1: lw a4, 16(t0) # argument #5 from usp
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2: lw a5, 20(t0) # argument #6 from usp
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3: lw a6, 24(t0) # argument #7 from usp
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4: lw a7, 28(t0) # argument #8 from usp (for indirect syscalls)
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.section __ex_table,"a"
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PTR 1b, bad_stack
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PTR 2b, bad_stack
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PTR 3b, bad_stack
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PTR 4b, bad_stack
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.previous
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li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
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LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
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and t0, t1, t0
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bnez t0, trace_a_syscall
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jalr t2 # Do The Real Thing (TM)
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li t0, -EMAXERRNO - 1 # error?
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sltu t0, t0, v0
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sd t0, PT_R7(sp) # set error flag
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beqz t0, 1f
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dnegu v0 # error
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sd v0, PT_R0(sp) # flag for syscall restarting
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1: sd v0, PT_R2(sp) # result
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o32_syscall_exit:
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local_irq_disable # make need_resched and
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# signals dont change between
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# sampling and return
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LONG_L a2, TI_FLAGS($28)
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li t0, _TIF_ALLWORK_MASK
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and t0, a2, t0
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bnez t0, o32_syscall_exit_work
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j restore_partial
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o32_syscall_exit_work:
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j syscall_exit_work_partial
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/* ------------------------------------------------------------------------ */
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trace_a_syscall:
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SAVE_STATIC
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sd a4, PT_R8(sp) # Save argument registers
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sd a5, PT_R9(sp)
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sd a6, PT_R10(sp)
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sd a7, PT_R11(sp) # For indirect syscalls
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move s0, t2 # Save syscall pointer
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move a0, sp
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li a1, 0
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jal do_syscall_trace
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move t0, s0
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RESTORE_STATIC
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ld a0, PT_R4(sp) # Restore argument registers
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ld a1, PT_R5(sp)
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ld a2, PT_R6(sp)
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ld a3, PT_R7(sp)
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ld a4, PT_R8(sp)
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ld a5, PT_R9(sp)
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ld a6, PT_R10(sp)
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ld a7, PT_R11(sp) # For indirect syscalls
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jalr t0
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li t0, -EMAXERRNO - 1 # error?
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sltu t0, t0, v0
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sd t0, PT_R7(sp) # set error flag
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beqz t0, 1f
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dnegu v0 # error
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sd v0, PT_R0(sp) # set flag for syscall restarting
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1: sd v0, PT_R2(sp) # result
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j syscall_exit
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/* ------------------------------------------------------------------------ */
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/*
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* The stackpointer for a call with more than 4 arguments is bad.
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*/
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bad_stack:
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dnegu v0 # error
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sd v0, PT_R0(sp)
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sd v0, PT_R2(sp)
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li t0, 1 # set error flag
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sd t0, PT_R7(sp)
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j o32_syscall_exit
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not_o32_scall:
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/*
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* This is not an o32 compatibility syscall, pass it on
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* to the 64-bit syscall handlers.
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*/
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#ifdef CONFIG_MIPS32_N32
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j handle_sysn32
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#else
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j handle_sys64
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#endif
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END(handle_sys)
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LEAF(sys32_syscall)
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sltu v0, a0, __NR_O32_Linux + __NR_O32_Linux_syscalls + 1
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beqz v0, einval
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dsll v0, a0, 3
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ld t2, (sys_call_table - (__NR_O32_Linux * 8))(v0)
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li v1, 4000 # indirect syscall number
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beq a0, v1, einval # do not recurse
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move a0, a1 # shift argument registers
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move a1, a2
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move a2, a3
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move a3, a4
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move a4, a5
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move a5, a6
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move a6, a7
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sd a0, PT_R4(sp) # ... and push back a0 - a3, some
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sd a1, PT_R5(sp) # syscalls expect them there
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sd a2, PT_R6(sp)
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sd a3, PT_R7(sp)
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sd a3, PT_R26(sp) # update a3 for syscall restarting
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jr t2
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/* Unreached */
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einval: li v0, -EINVAL
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jr ra
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END(sys32_syscall)
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.align 3
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.type sys_call_table,@object
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sys_call_table:
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PTR sys32_syscall /* 4000 */
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PTR sys_exit
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PTR sys_fork
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PTR sys_read
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PTR sys_write
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PTR compat_sys_open /* 4005 */
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PTR sys_close
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PTR sys_waitpid
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PTR sys_creat
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PTR sys_link
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PTR sys_unlink /* 4010 */
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PTR sys32_execve
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PTR sys_chdir
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PTR compat_sys_time
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PTR sys_mknod
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PTR sys_chmod /* 4015 */
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PTR sys_lchown
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PTR sys_ni_syscall
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PTR sys_ni_syscall /* was sys_stat */
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PTR sys_lseek
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| 228 |
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PTR sys_getpid /* 4020 */
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PTR compat_sys_mount
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PTR sys_oldumount
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PTR sys_setuid
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PTR sys_getuid
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PTR compat_sys_stime /* 4025 */
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PTR sys32_ptrace
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PTR sys_alarm
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PTR sys_ni_syscall /* was sys_fstat */
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PTR sys_pause
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| 238 |
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PTR compat_sys_utime /* 4030 */
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PTR sys_ni_syscall
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| 240 |
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PTR sys_ni_syscall
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| 241 |
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PTR sys_access
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| 242 |
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PTR sys_nice
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| 243 |
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PTR sys_ni_syscall /* 4035 */
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| 244 |
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PTR sys_sync
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| 245 |
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PTR sys_kill
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| 246 |
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PTR sys_rename
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| 247 |
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PTR sys_mkdir
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| 248 |
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PTR sys_rmdir /* 4040 */
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| 249 |
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PTR sys_dup
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| 250 |
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PTR sys_pipe
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| 251 |
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PTR compat_sys_times
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| 252 |
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PTR sys_ni_syscall
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| 253 |
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PTR sys_brk /* 4045 */
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| 254 |
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PTR sys_setgid
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| 255 |
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PTR sys_getgid
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| 256 |
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PTR sys_ni_syscall /* was signal 2 */
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| 257 |
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PTR sys_geteuid
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| 258 |
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PTR sys_getegid /* 4050 */
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| 259 |
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PTR sys_acct
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| 260 |
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PTR sys_umount
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| 261 |
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PTR sys_ni_syscall
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| 262 |
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PTR compat_sys_ioctl
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| 263 |
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PTR compat_sys_fcntl /* 4055 */
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| 264 |
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PTR sys_ni_syscall
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| 265 |
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PTR sys_setpgid
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| 266 |
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PTR sys_ni_syscall
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| 267 |
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PTR sys_olduname
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| 268 |
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PTR sys_umask /* 4060 */
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| 269 |
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PTR sys_chroot
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| 270 |
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PTR sys32_ustat
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| 271 |
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PTR sys_dup2
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| 272 |
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PTR sys_getppid
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| 273 |
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PTR sys_getpgrp /* 4065 */
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| 274 |
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PTR sys_setsid
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| 275 |
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PTR sys32_sigaction
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| 276 |
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PTR sys_sgetmask
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| 277 |
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PTR sys_ssetmask
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| 278 |
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PTR sys_setreuid /* 4070 */
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| 279 |
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PTR sys_setregid
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| 280 |
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PTR sys32_sigsuspend
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| 281 |
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PTR compat_sys_sigpending
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| 282 |
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PTR sys_sethostname
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| 283 |
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PTR compat_sys_setrlimit /* 4075 */
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| 284 |
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PTR compat_sys_getrlimit
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| 285 |
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PTR compat_sys_getrusage
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| 286 |
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PTR sys32_gettimeofday
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| 287 |
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PTR sys32_settimeofday
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| 288 |
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PTR sys_getgroups /* 4080 */
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| 289 |
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PTR sys_setgroups
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| 290 |
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PTR sys_ni_syscall /* old_select */
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| 291 |
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PTR sys_symlink
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| 292 |
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PTR sys_ni_syscall /* was sys_lstat */
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| 293 |
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PTR sys_readlink /* 4085 */
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| 294 |
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PTR sys_uselib
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| 295 |
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PTR sys_swapon
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| 296 |
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PTR sys_reboot
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| 297 |
|
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PTR compat_sys_old_readdir
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| 298 |
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PTR old_mmap /* 4090 */
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| 299 |
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PTR sys_munmap
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| 300 |
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PTR sys_truncate
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| 301 |
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PTR sys_ftruncate
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| 302 |
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PTR sys_fchmod
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| 303 |
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PTR sys_fchown /* 4095 */
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| 304 |
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PTR sys_getpriority
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| 305 |
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PTR sys_setpriority
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| 306 |
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PTR sys_ni_syscall
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| 307 |
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PTR compat_sys_statfs
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| 308 |
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PTR compat_sys_fstatfs /* 4100 */
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| 309 |
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PTR sys_ni_syscall /* sys_ioperm */
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| 310 |
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PTR compat_sys_socketcall
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| 311 |
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PTR sys_syslog
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| 312 |
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PTR compat_sys_setitimer
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| 313 |
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PTR compat_sys_getitimer /* 4105 */
|
| 314 |
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PTR compat_sys_newstat
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| 315 |
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PTR compat_sys_newlstat
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| 316 |
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PTR compat_sys_newfstat
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| 317 |
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PTR sys_uname
|
| 318 |
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PTR sys_ni_syscall /* sys_ioperm *//* 4110 */
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| 319 |
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PTR sys_vhangup
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| 320 |
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PTR sys_ni_syscall /* was sys_idle */
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| 321 |
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PTR sys_ni_syscall /* sys_vm86 */
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| 322 |
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PTR compat_sys_wait4
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| 323 |
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PTR sys_swapoff /* 4115 */
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| 324 |
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PTR compat_sys_sysinfo
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| 325 |
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PTR sys32_ipc
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| 326 |
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PTR sys_fsync
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| 327 |
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PTR sys32_sigreturn
|
| 328 |
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PTR sys32_clone /* 4120 */
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| 329 |
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PTR sys_setdomainname
|
| 330 |
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PTR sys32_newuname
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| 331 |
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PTR sys_ni_syscall /* sys_modify_ldt */
|
| 332 |
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PTR compat_sys_adjtimex
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| 333 |
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PTR sys_mprotect /* 4125 */
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| 334 |
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PTR compat_sys_sigprocmask
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| 335 |
|
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PTR sys_ni_syscall /* was creat_module */
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| 336 |
|
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PTR sys_init_module
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| 337 |
|
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PTR sys_delete_module
|
| 338 |
|
|
PTR sys_ni_syscall /* 4130, get_kernel_syms */
|
| 339 |
|
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PTR sys_quotactl
|
| 340 |
|
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PTR sys_getpgid
|
| 341 |
|
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PTR sys_fchdir
|
| 342 |
|
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PTR sys_bdflush
|
| 343 |
|
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PTR sys_sysfs /* 4135 */
|
| 344 |
|
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PTR sys32_personality
|
| 345 |
|
|
PTR sys_ni_syscall /* for afs_syscall */
|
| 346 |
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PTR sys_setfsuid
|
| 347 |
|
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PTR sys_setfsgid
|
| 348 |
|
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PTR sys32_llseek /* 4140 */
|
| 349 |
|
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PTR compat_sys_getdents
|
| 350 |
|
|
PTR compat_sys_select
|
| 351 |
|
|
PTR sys_flock
|
| 352 |
|
|
PTR sys_msync
|
| 353 |
|
|
PTR compat_sys_readv /* 4145 */
|
| 354 |
|
|
PTR compat_sys_writev
|
| 355 |
|
|
PTR sys_cacheflush
|
| 356 |
|
|
PTR sys_cachectl
|
| 357 |
|
|
PTR sys_sysmips
|
| 358 |
|
|
PTR sys_ni_syscall /* 4150 */
|
| 359 |
|
|
PTR sys_getsid
|
| 360 |
|
|
PTR sys_fdatasync
|
| 361 |
|
|
PTR sys32_sysctl
|
| 362 |
|
|
PTR sys_mlock
|
| 363 |
|
|
PTR sys_munlock /* 4155 */
|
| 364 |
|
|
PTR sys_mlockall
|
| 365 |
|
|
PTR sys_munlockall
|
| 366 |
|
|
PTR sys_sched_setparam
|
| 367 |
|
|
PTR sys_sched_getparam
|
| 368 |
|
|
PTR sys_sched_setscheduler /* 4160 */
|
| 369 |
|
|
PTR sys_sched_getscheduler
|
| 370 |
|
|
PTR sys_sched_yield
|
| 371 |
|
|
PTR sys_sched_get_priority_max
|
| 372 |
|
|
PTR sys_sched_get_priority_min
|
| 373 |
|
|
PTR sys32_sched_rr_get_interval /* 4165 */
|
| 374 |
|
|
PTR compat_sys_nanosleep
|
| 375 |
|
|
PTR sys_mremap
|
| 376 |
|
|
PTR sys_accept
|
| 377 |
|
|
PTR sys_bind
|
| 378 |
|
|
PTR sys_connect /* 4170 */
|
| 379 |
|
|
PTR sys_getpeername
|
| 380 |
|
|
PTR sys_getsockname
|
| 381 |
|
|
PTR sys_getsockopt
|
| 382 |
|
|
PTR sys_listen
|
| 383 |
|
|
PTR sys_recv /* 4175 */
|
| 384 |
|
|
PTR sys_recvfrom
|
| 385 |
|
|
PTR compat_sys_recvmsg
|
| 386 |
|
|
PTR sys_send
|
| 387 |
|
|
PTR compat_sys_sendmsg
|
| 388 |
|
|
PTR sys_sendto /* 4180 */
|
| 389 |
|
|
PTR compat_sys_setsockopt
|
| 390 |
|
|
PTR sys_shutdown
|
| 391 |
|
|
PTR sys_socket
|
| 392 |
|
|
PTR sys_socketpair
|
| 393 |
|
|
PTR sys_setresuid /* 4185 */
|
| 394 |
|
|
PTR sys_getresuid
|
| 395 |
|
|
PTR sys_ni_syscall /* was query_module */
|
| 396 |
|
|
PTR sys_poll
|
| 397 |
|
|
PTR compat_sys_nfsservctl
|
| 398 |
|
|
PTR sys_setresgid /* 4190 */
|
| 399 |
|
|
PTR sys_getresgid
|
| 400 |
|
|
PTR sys_prctl
|
| 401 |
|
|
PTR sys32_rt_sigreturn
|
| 402 |
|
|
PTR sys32_rt_sigaction
|
| 403 |
|
|
PTR sys32_rt_sigprocmask /* 4195 */
|
| 404 |
|
|
PTR sys32_rt_sigpending
|
| 405 |
|
|
PTR compat_sys_rt_sigtimedwait
|
| 406 |
|
|
PTR sys32_rt_sigqueueinfo
|
| 407 |
|
|
PTR sys32_rt_sigsuspend
|
| 408 |
|
|
PTR sys32_pread /* 4200 */
|
| 409 |
|
|
PTR sys32_pwrite
|
| 410 |
|
|
PTR sys_chown
|
| 411 |
|
|
PTR sys_getcwd
|
| 412 |
|
|
PTR sys_capget
|
| 413 |
|
|
PTR sys_capset /* 4205 */
|
| 414 |
|
|
PTR sys32_sigaltstack
|
| 415 |
|
|
PTR sys32_sendfile
|
| 416 |
|
|
PTR sys_ni_syscall
|
| 417 |
|
|
PTR sys_ni_syscall
|
| 418 |
|
|
PTR sys32_mmap2 /* 4210 */
|
| 419 |
|
|
PTR sys32_truncate64
|
| 420 |
|
|
PTR sys32_ftruncate64
|
| 421 |
|
|
PTR sys_newstat
|
| 422 |
|
|
PTR sys_newlstat
|
| 423 |
|
|
PTR sys_newfstat /* 4215 */
|
| 424 |
|
|
PTR sys_pivot_root
|
| 425 |
|
|
PTR sys_mincore
|
| 426 |
|
|
PTR sys_madvise
|
| 427 |
|
|
PTR sys_getdents64
|
| 428 |
|
|
PTR compat_sys_fcntl64 /* 4220 */
|
| 429 |
|
|
PTR sys_ni_syscall
|
| 430 |
|
|
PTR sys_gettid
|
| 431 |
|
|
PTR sys32_readahead
|
| 432 |
|
|
PTR sys_setxattr
|
| 433 |
|
|
PTR sys_lsetxattr /* 4225 */
|
| 434 |
|
|
PTR sys_fsetxattr
|
| 435 |
|
|
PTR sys_getxattr
|
| 436 |
|
|
PTR sys_lgetxattr
|
| 437 |
|
|
PTR sys_fgetxattr
|
| 438 |
|
|
PTR sys_listxattr /* 4230 */
|
| 439 |
|
|
PTR sys_llistxattr
|
| 440 |
|
|
PTR sys_flistxattr
|
| 441 |
|
|
PTR sys_removexattr
|
| 442 |
|
|
PTR sys_lremovexattr
|
| 443 |
|
|
PTR sys_fremovexattr /* 4235 */
|
| 444 |
|
|
PTR sys_tkill
|
| 445 |
|
|
PTR sys_sendfile64
|
| 446 |
|
|
PTR compat_sys_futex
|
| 447 |
|
|
PTR compat_sys_sched_setaffinity
|
| 448 |
|
|
PTR compat_sys_sched_getaffinity /* 4240 */
|
| 449 |
|
|
PTR sys_io_setup
|
| 450 |
|
|
PTR sys_io_destroy
|
| 451 |
|
|
PTR sys_io_getevents
|
| 452 |
|
|
PTR sys_io_submit
|
| 453 |
|
|
PTR sys_io_cancel /* 4245 */
|
| 454 |
|
|
PTR sys_exit_group
|
| 455 |
|
|
PTR sys_lookup_dcookie
|
| 456 |
|
|
PTR sys_epoll_create
|
| 457 |
|
|
PTR sys_epoll_ctl
|
| 458 |
|
|
PTR sys_epoll_wait /* 4250 */
|
| 459 |
|
|
PTR sys_remap_file_pages
|
| 460 |
|
|
PTR sys_set_tid_address
|
| 461 |
|
|
PTR sys_restart_syscall
|
| 462 |
|
|
PTR sys32_fadvise64_64
|
| 463 |
|
|
PTR compat_sys_statfs64 /* 4255 */
|
| 464 |
|
|
PTR compat_sys_fstatfs64
|
| 465 |
|
|
PTR compat_sys_timer_create
|
| 466 |
|
|
PTR compat_sys_timer_settime
|
| 467 |
|
|
PTR compat_sys_timer_gettime
|
| 468 |
|
|
PTR sys_timer_getoverrun /* 4260 */
|
| 469 |
|
|
PTR sys_timer_delete
|
| 470 |
|
|
PTR compat_sys_clock_settime
|
| 471 |
|
|
PTR compat_sys_clock_gettime
|
| 472 |
|
|
PTR compat_sys_clock_getres
|
| 473 |
|
|
PTR compat_sys_clock_nanosleep /* 4265 */
|
| 474 |
|
|
PTR sys_tgkill
|
| 475 |
|
|
PTR compat_sys_utimes
|
| 476 |
|
|
PTR sys_ni_syscall /* sys_mbind */
|
| 477 |
|
|
PTR sys_ni_syscall /* sys_get_mempolicy */
|
| 478 |
|
|
PTR sys_ni_syscall /* 4270 sys_set_mempolicy */
|
| 479 |
|
|
PTR compat_sys_mq_open
|
| 480 |
|
|
PTR sys_mq_unlink
|
| 481 |
|
|
PTR compat_sys_mq_timedsend
|
| 482 |
|
|
PTR compat_sys_mq_timedreceive
|
| 483 |
|
|
PTR compat_sys_mq_notify /* 4275 */
|
| 484 |
|
|
PTR compat_sys_mq_getsetattr
|
| 485 |
|
|
PTR sys_ni_syscall /* sys_vserver */
|
| 486 |
|
|
PTR sys32_waitid
|
| 487 |
|
|
PTR sys_ni_syscall /* available, was setaltroot */
|
| 488 |
|
|
PTR sys_add_key /* 4280 */
|
| 489 |
|
|
PTR sys_request_key
|
| 490 |
|
|
PTR sys_keyctl
|
| 491 |
|
|
PTR sys_set_thread_area
|
| 492 |
|
|
PTR sys_inotify_init
|
| 493 |
|
|
PTR sys_inotify_add_watch /* 4285 */
|
| 494 |
|
|
PTR sys_inotify_rm_watch
|
| 495 |
|
|
PTR sys_migrate_pages
|
| 496 |
|
|
PTR compat_sys_openat
|
| 497 |
|
|
PTR sys_mkdirat
|
| 498 |
|
|
PTR sys_mknodat /* 4290 */
|
| 499 |
|
|
PTR sys_fchownat
|
| 500 |
|
|
PTR compat_sys_futimesat
|
| 501 |
|
|
PTR sys_newfstatat
|
| 502 |
|
|
PTR sys_unlinkat
|
| 503 |
|
|
PTR sys_renameat /* 4295 */
|
| 504 |
|
|
PTR sys_linkat
|
| 505 |
|
|
PTR sys_symlinkat
|
| 506 |
|
|
PTR sys_readlinkat
|
| 507 |
|
|
PTR sys_fchmodat
|
| 508 |
|
|
PTR sys_faccessat /* 4300 */
|
| 509 |
|
|
PTR compat_sys_pselect6
|
| 510 |
|
|
PTR sys_ppoll
|
| 511 |
|
|
PTR sys_unshare
|
| 512 |
|
|
PTR sys_splice
|
| 513 |
|
|
PTR sys32_sync_file_range /* 4305 */
|
| 514 |
|
|
PTR sys_tee
|
| 515 |
|
|
PTR sys_vmsplice
|
| 516 |
|
|
PTR compat_sys_move_pages
|
| 517 |
|
|
PTR compat_sys_set_robust_list
|
| 518 |
|
|
PTR compat_sys_get_robust_list /* 4310 */
|
| 519 |
|
|
PTR compat_sys_kexec_load
|
| 520 |
|
|
PTR sys_getcpu
|
| 521 |
|
|
PTR compat_sys_epoll_pwait
|
| 522 |
|
|
PTR sys_ioprio_set
|
| 523 |
|
|
PTR sys_ioprio_get /* 4315 */
|
| 524 |
|
|
PTR compat_sys_utimensat
|
| 525 |
|
|
PTR compat_sys_signalfd
|
| 526 |
|
|
PTR compat_sys_timerfd
|
| 527 |
|
|
PTR sys_eventfd
|
| 528 |
|
|
PTR sys32_fallocate /* 4320 */
|
| 529 |
|
|
.size sys_call_table,.-sys_call_table
|
