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Rev Author Line No. Line
6926 serge 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
10051 ace_dent 3 
;; Copyright (C) KolibriOS team 2004-2024. 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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8 
 
7136 dunkaist 9 
ENOENT  =      2
10 
EBADF   =      9
11 
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
6926 serge 16 
 
7136 dunkaist 17 
FILEOP_CLOSE    =     0
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FILEOP_READ     =     1
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FILEOP_WRITE    =     2
6926 serge 20 
 
21 
 
22 
include "futex.inc"
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24 
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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36 
include "pipe.inc"
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38 
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
6927 serge 51 
        dd sys_read         ;10    read()
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        dd sys_write        ;11    write()
6926 serge 53 
        dd sys_posix.fail   ;12    sys_dup3
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        dd sys_pipe2        ;13
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.end:
56 
endg
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58 
align 4
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sys_posix:
9715 Doczom 60 
        cmp     ebx, (sys_posix_call.end - sys_posix_call)/4
6926 serge 61 
        jae     .fail
62 
 
9715 Doczom 63 
        jmp     dword [sys_posix_call + ebx*4]
6926 serge 64 
 
65 
.fail:
9831 dunkaist 66 
        mov     [esp + SYSCALL_STACK.eax], -EBADF
6926 serge 67 
        ret
68 
 
69 
 
70 
;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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75 
align 4
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sys_read:
77 
        cmp     ecx, STDERR_FILENO
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        jbe     .fail
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        cmp     ecx, (PROC.pdt_0 - PROC.htab)/4
80 
        jae     .fail
81 
 
82 
        mov     edi, [current_process]
9715 Doczom 83 
        mov     ebp, [edi + PROC.htab + ecx*4]
6926 serge 84 
 
9884 Doczom 85 
        stdcall is_region_userspace, ebp, 4
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        jz      .fail
87 
 
9715 Doczom 88 
        cmp     [ebp + FILED.magic], 'PIPE'
6926 serge 89 
        jne     .fail
9715 Doczom 90 
        cmp     [ebp + FILED.handle], ecx
6926 serge 91 
        jne     .fail
92 
 
9715 Doczom 93 
        test    [ebp + FILED.mode], F_READ
6929 serge 94 
        jz      .fail
95 
 
9715 Doczom 96 
        mov     ebp, [ebp + FILED.file]
6926 serge 97 
        mov     eax, [ebp]
9715 Doczom 98 
        jmp     dword [eax + FILEOP_READ*4]
6926 serge 99 
.fail:
9831 dunkaist 100 
        mov     [esp + SYSCALL_STACK.eax], -EBADF
6926 serge 101 
        ret
102 
 
6927 serge 103 
;ssize_t write(int fd, const void *buf, size_t count);
104 
; ecx fd
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; edx buf
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; esi count
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108 
align 4
109 
sys_write:
110 
        cmp     ecx, STDERR_FILENO
111 
        jbe     .fail
112 
        cmp     ecx, (PROC.pdt_0 - PROC.htab)/4
113 
        jae     .fail
114 
 
115 
        mov     edi, [current_process]
9715 Doczom 116 
        mov     ebp, [edi + PROC.htab+ecx*4]
6927 serge 117 
 
9884 Doczom 118 
        stdcall is_region_userspace, ebp, 4
119 
        jz      .fail
120 
 
9715 Doczom 121 
        cmp     [ebp + FILED.magic], 'PIPE'
6927 serge 122 
        jne     .fail
9715 Doczom 123 
        cmp     [ebp + FILED.handle], ecx
6927 serge 124 
        jne     .fail
9715 Doczom 125 
        test    [ebp + FILED.mode], F_WRITE
6929 serge 126 
        jz      .fail
6927 serge 127 
 
9715 Doczom 128 
        mov     ebp, [ebp + FILED.file]
6927 serge 129 
        mov     eax, [ebp]
9715 Doczom 130 
        jmp     dword [eax + FILEOP_WRITE*4]
6927 serge 131 
.fail:
9831 dunkaist 132 
        mov     [esp + SYSCALL_STACK.eax], -EBADF
6927 serge 133 
        ret
134