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6926 serge 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
9715 Doczom 3 
;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. ;;
6926 serge 4 
;;  Distributed under terms of the GNU General Public License.  ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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8130 dunkaist 8 
$Revision: 9884 $
6926 serge 9 
 
7136 dunkaist 10 
ENOENT  =      2
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EBADF   =      9
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EFAULT  =     14
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;EINVAL  =     22      11   defined in stack.inc
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ENFILE  =     23
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EMFILE  =     24
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EPIPE   =     32
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7136 dunkaist 18 
FILEOP_CLOSE    =     0
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FILEOP_READ     =     1
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FILEOP_WRITE    =     2
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include "futex.inc"
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iglobal
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align 4
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sys_futex_call:
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        dd sys_futex.destroy        ;1
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        dd sys_futex.wait           ;2
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        dd sys_futex.wake           ;3
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        dd sys_futex.requeue        ;4
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        dd sys_futex.cmp_requeue    ;5
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        dd sys_futex.wait_bitset    ;6
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        dd sys_futex.wake_bitset    ;7
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endg
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include "pipe.inc"
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iglobal
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align 4
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sys_posix_call:
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        dd sys_futex.init   ;0     futex_init
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        dd sys_futex        ;1     futex_destroy
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        dd sys_futex        ;2     futex_wait
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        dd sys_futex        ;3     futex_wake
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        dd sys_futex        ;4     reserved
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        dd sys_futex        ;5     reserved
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        dd sys_futex        ;6     reserved
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        dd sys_futex        ;7     reserved
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        dd sys_posix.fail   ;8     sys_open
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        dd sys_posix.fail   ;9     sys_close
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        dd sys_read         ;10    read()
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        dd sys_write        ;11    write()
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        dd sys_posix.fail   ;12    sys_dup3
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        dd sys_pipe2        ;13
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.end:
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endg
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align 4
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sys_posix:
9715 Doczom 61 
        cmp     ebx, (sys_posix_call.end - sys_posix_call)/4
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        jae     .fail
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9715 Doczom 64 
        jmp     dword [sys_posix_call + ebx*4]
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.fail:
9831 dunkaist 67 
        mov     [esp + SYSCALL_STACK.eax], -EBADF
6926 serge 68 
        ret
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70 
 
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;ssize_t read(int fd, void *buf, size_t count);
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; ecx fd
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; edx buf
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; esi count
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76 
align 4
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sys_read:
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        cmp     ecx, STDERR_FILENO
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        jbe     .fail
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        cmp     ecx, (PROC.pdt_0 - PROC.htab)/4
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        jae     .fail
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83 
        mov     edi, [current_process]
9715 Doczom 84 
        mov     ebp, [edi + PROC.htab + ecx*4]
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9884 Doczom 86 
        stdcall is_region_userspace, ebp, 4
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        jz      .fail
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9715 Doczom 89 
        cmp     [ebp + FILED.magic], 'PIPE'
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        jne     .fail
9715 Doczom 91 
        cmp     [ebp + FILED.handle], ecx
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        jne     .fail
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9715 Doczom 94 
        test    [ebp + FILED.mode], F_READ
6929 serge 95 
        jz      .fail
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9715 Doczom 97 
        mov     ebp, [ebp + FILED.file]
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        mov     eax, [ebp]
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        jmp     dword [eax + FILEOP_READ*4]
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.fail:
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        mov     [esp + SYSCALL_STACK.eax], -EBADF
6926 serge 102 
        ret
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6927 serge 104 
;ssize_t write(int fd, const void *buf, size_t count);
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; ecx fd
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; edx buf
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; esi count
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109 
align 4
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sys_write:
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        cmp     ecx, STDERR_FILENO
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        jbe     .fail
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        cmp     ecx, (PROC.pdt_0 - PROC.htab)/4
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        jae     .fail
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116 
        mov     edi, [current_process]
9715 Doczom 117 
        mov     ebp, [edi + PROC.htab+ecx*4]
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9884 Doczom 119 
        stdcall is_region_userspace, ebp, 4
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        jz      .fail
121 
 
9715 Doczom 122 
        cmp     [ebp + FILED.magic], 'PIPE'
6927 serge 123 
        jne     .fail
9715 Doczom 124 
        cmp     [ebp + FILED.handle], ecx
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        jne     .fail
9715 Doczom 126 
        test    [ebp + FILED.mode], F_WRITE
6929 serge 127 
        jz      .fail
6927 serge 128 
 
9715 Doczom 129 
        mov     ebp, [ebp + FILED.file]
6927 serge 130 
        mov     eax, [ebp]
9715 Doczom 131 
        jmp     dword [eax + FILEOP_WRITE*4]
6927 serge 132 
.fail:
9831 dunkaist 133 
        mov     [esp + SYSCALL_STACK.eax], -EBADF
6927 serge 134 
        ret
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