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Rev | Author | Line No. | Line |
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1 | ha | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; System service for filesystem call ;; |
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4 | ;; (C) 2004 Ville Turjanmaa, License: GPL ;; |
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5 | ;; ;; |
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6 | ;; 15.01.2005 get file size/attr/date, file_append (only for hd) - ATV ;; |
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7 | ;; 23.11.2004 test if hd/partition is set - ATV ;; |
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8 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
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9 | ;; 08.11.2004 expand_pathz and rename (only for hd) - ATV ;; |
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10 | ;; 20.10.2004 Makedir/Removedir (only for hd) - ATV ;; |
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11 | ;; ;; |
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12 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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13 | |||
14 | iglobal |
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15 | dir0: db 'HARDDISK ' |
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16 | db 'RAMDISK ' |
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17 | db 'FLOPPYDISK ' |
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18 | db 0 |
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19 | |||
20 | dir1: db 'FIRST ' |
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21 | db 'SECOND ' |
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22 | db 'THIRD ' |
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23 | db 'FOURTH ' |
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24 | db 0 |
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25 | |||
26 | not_select_IDE db 0 |
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27 | |||
28 | hd_address_table: dd 0x1f0,0x00,0x1f0,0x10 |
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29 | dd 0x170,0x00,0x170,0x10 |
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30 | endg |
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31 | |||
32 | file_system: |
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33 | ; IN: |
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34 | ; |
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35 | ; eax = 0 ; read file /RamDisk/First 6 /HardDisk/First 30 |
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36 | ; eax = 1 ; write file /RamDisk/First 33 /HardDisk/First 56 |
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37 | ; eax = 2 ; delete file /RamDisk/First 32 /HardDisk/First 57 |
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38 | ; eax = 3 ; append to a file /RamDisk/First ?? /HardDisk/First ?? |
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39 | ; eax = 4 ; makedir |
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40 | ; eax = 5 ; rename file/directory |
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41 | ; eax = 8 ; lba read |
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42 | ; eax = 12 ; get_filesize |
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43 | ; eax = 13 ; get_fileattr |
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44 | ; eax = 14 ; get_filedate |
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45 | ; eax = 15 ; get_disk_info |
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46 | ; eax = 16 ; start application |
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47 | ; |
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48 | ; OUT: |
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49 | ; |
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50 | ; eax = 0 : read ok |
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61 | halyavin | 51 | ; eax = 1 : no hd base and/or partition defined |
1 | ha | 52 | ; eax = 2 : yet unsupported FS |
53 | ; eax = 3 : unknown FS |
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54 | ; eax = 4 : partition not defined at hd |
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55 | ; eax = 5 : file not found |
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56 | ; eax = 6 : end of file |
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57 | ; eax = 7 : memory pointer not in application area |
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58 | ; eax = 8 : disk full |
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59 | ; eax = 9 : fat table corrupted |
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60 | ; eax = 10 : access denied |
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61 | ; |
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62 | ; ebx = size |
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63 | |||
61 | halyavin | 64 | ; \begin{diamond}[18.03.2006] |
65 | ; for subfunction 16 (start application) error codes must be negative |
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66 | ; because positive values are valid PIDs |
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67 | ; so possible return values are: |
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68 | ; eax > 0 : process created, eax=PID |
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69 | |||
70 | ; -0x10 <= eax < 0 : -eax is filesystem error code: |
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71 | ; eax = -1 = 0xFFFFFFFF : no hd base and/or partition defined |
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72 | ; eax = -3 = 0xFFFFFFFD : unknown FS |
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73 | ; eax = -5 = 0xFFFFFFFB : file not found |
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74 | ; eax = -6 = 0xFFFFFFFA : unexpected end of file (probably not executable file) |
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75 | ; eax = -9 = 0xFFFFFFF7 : fat table corrupted |
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76 | ; eax = -10 = 0xFFFFFFF6 : access denied |
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77 | |||
78 | ; -0x20 <= eax < -0x10: eax is process creation error code: |
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79 | ; eax = -0x20 = 0xFFFFFFE0 : too many processes |
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80 | ; eax = -0x1F = 0xFFFFFFE1 : not Menuet/Kolibri executable |
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81 | ; eax = -0x1E = 0xFFFFFFE2 : no memory |
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82 | |||
83 | ; ebx is not changed |
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84 | |||
85 | ; \end{diamond}[18.03.2006] |
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86 | |||
1 | ha | 87 | ; Extract parameters |
61 | halyavin | 88 | add eax, std_application_base_address ; abs start of info block |
1 | ha | 89 | |
90 | cmp dword [eax+0],12 ; Get file size |
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91 | je fs_read |
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92 | cmp dword [eax+0],13 ; Get file attribute |
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93 | je fs_read |
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94 | cmp dword [eax+0],14 ; Get file date/time |
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95 | je fs_read |
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96 | cmp dword [eax+0],15 ; GET_DISK_INFO |
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97 | je fs_info |
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98 | cmp dword [eax+0],16 ; RUN - dont care about read&write blocks |
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99 | je fs_read |
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100 | cmp dword [eax+0],5 ; RENAME - dont care about read&write blocks |
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101 | je fs_read |
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102 | cmp dword [eax+0],4 ; MAKEDIR - dont care about read&write blocks |
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103 | je fs_read |
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104 | cmp dword [eax+0],2 ; DELETE - dont care about read&write blocks |
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105 | je fs_read |
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106 | |||
107 | cmp dword [0x3000],1 ; no memory checks for kernel requests |
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108 | jz no_checks_for_kernel |
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109 | mov edx,eax |
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110 | cmp dword [eax+0],1 |
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111 | jz .check_for_write_op |
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112 | cmp dword [eax+0],3 |
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113 | jnz .usual_check |
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114 | .check_for_write_op: |
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115 | mov ebx,[eax+12] |
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116 | add ebx,std_application_base_address |
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117 | mov ecx,[eax+8] |
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118 | call check_region |
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119 | test eax,eax |
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120 | jnz area_in_app_mem |
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121 | |||
122 | .error_output: |
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123 | mov esi,buffer_failed |
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124 | call sys_msg_board_str |
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61 | halyavin | 125 | ; mov eax,7 |
1 | ha | 126 | mov dword [esp+36],7 |
127 | ret |
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128 | iglobal |
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61 | halyavin | 129 | buffer_failed db 'K : Buffer check failed',13,10,0 |
1 | ha | 130 | endg |
131 | .usual_check: |
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132 | cmp dword [eax+0],0 |
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133 | mov ecx,512 |
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134 | jnz .small_size |
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135 | mov ecx,[eax+8] |
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136 | shl ecx,9 |
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137 | .small_size: |
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138 | mov ebx,[eax+12] |
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139 | add ebx,std_application_base_address |
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140 | call check_region |
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141 | test eax,eax |
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142 | jz .error_output |
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143 | area_in_app_mem: |
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144 | mov eax,edx |
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145 | no_checks_for_kernel: |
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146 | |||
147 | |||
148 | cmp dword [eax+0],3 ; APPEND - allow write 0 bytes (truncate) |
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149 | je fs_read |
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150 | cmp dword [eax+8],0 ; read or write 0 blocks/bytes ? |
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151 | jne fs_read |
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61 | halyavin | 152 | and dword [esp+36],0 |
1 | ha | 153 | ret |
154 | fs_read: |
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155 | |||
156 | mov ebx,[eax+20] ; program wants root directory ? |
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157 | test bl,bl |
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158 | je fs_getroot |
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159 | test bh,bh |
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160 | jne fs_noroot |
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161 | fs_getroot: |
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61 | halyavin | 162 | ; \begin{diamond}[18.03.2006] |
163 | ; root - only read is allowed |
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164 | ; other operations return "access denied", eax=10 |
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165 | ; (execute operation returns eax=-10) |
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166 | cmp dword [eax], 0 |
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167 | jz .read_root |
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168 | mov ecx, 10 |
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169 | cmp dword [eax], 16 |
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170 | jnz @f |
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171 | neg ecx |
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172 | @@: mov [esp+36], ecx |
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173 | ret |
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174 | .read_root: |
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175 | ; \end{diamond}[18.03.2006] |
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1 | ha | 176 | mov esi,dir0 |
177 | mov edi,[eax+12] |
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61 | halyavin | 178 | add edi,std_application_base_address |
1 | ha | 179 | mov ecx,11 |
61 | halyavin | 180 | push ecx |
181 | ; cld ; already is |
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1 | ha | 182 | rep movsb |
61 | halyavin | 183 | mov al,0x10 |
1 | ha | 184 | stosb |
185 | add edi,32-11-1 |
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61 | halyavin | 186 | pop ecx |
1 | ha | 187 | rep movsb |
188 | stosb |
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61 | halyavin | 189 | and dword [esp+36],0 ; ok read |
1 | ha | 190 | mov dword [esp+24],32*2 ; size of root |
191 | ret |
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192 | |||
193 | fs_info: ;start of code - Mihasik |
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61 | halyavin | 194 | push eax |
1 | ha | 195 | cmp [eax+21],byte 'h' |
196 | je fs_info_h |
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197 | cmp [eax+21],byte 'H' |
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198 | je fs_info_h |
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199 | cmp [eax+21],byte 'r' |
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200 | je fs_info_r |
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201 | cmp [eax+21],byte 'R' |
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202 | je fs_info_r |
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203 | mov eax,3 ;if unknown disk |
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204 | xor ebx,ebx |
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205 | xor ecx,ecx |
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206 | xor edx,edx |
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207 | jmp fs_info1 |
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208 | fs_info_r: |
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209 | call ramdisk_free_space ;if ramdisk |
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210 | mov ecx,edi ;free space in ecx |
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211 | shr ecx,9 ;free clusters |
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212 | mov ebx,2847 ;total clusters |
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213 | mov edx,512 ;cluster size |
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214 | xor eax,eax ;always 0 |
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215 | jmp fs_info1 |
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216 | fs_info_h: ;if harddisk |
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217 | call get_hd_info |
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218 | fs_info1: |
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219 | pop edi |
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220 | mov [esp+36],eax |
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221 | mov [esp+24],ebx ; total clusters on disk |
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222 | mov [esp+32],ecx ; free clusters on disk |
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223 | mov [edi],edx ; cluster size in bytes |
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224 | ret ;end of code - Mihasik |
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225 | |||
226 | fs_noroot: |
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227 | |||
61 | halyavin | 228 | push dword [eax+0] ; read/write/delete/.../makedir/rename/lba/run |
229 | push dword [eax+4] ; 512 block number to read |
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230 | push dword [eax+8] ; bytes to write/append or 512 blocks to read |
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1 | ha | 231 | mov ebx,[eax+12] |
61 | halyavin | 232 | add ebx,std_application_base_address |
1 | ha | 233 | push ebx ; abs start of return/save area |
234 | |||
235 | lea esi,[eax+20] ; abs start of dir + filename |
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61 | halyavin | 236 | mov edi,[eax+16] |
237 | add edi,std_application_base_address ; abs start of work area |
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1 | ha | 238 | |
239 | call expand_pathz |
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240 | |||
241 | push edi ; dir start |
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242 | push ebx ; name of file start |
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243 | |||
244 | mov eax,[edi+1] |
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245 | cmp eax,'RD ' |
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246 | je fs_yesramdisk |
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61 | halyavin | 247 | cmp eax,'RAMD' |
1 | ha | 248 | jne fs_noramdisk |
249 | |||
250 | fs_yesramdisk: |
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251 | |||
252 | cmp byte [edi+1+11],0 |
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253 | je fs_give_dir1 |
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254 | |||
255 | mov eax,[edi+1+12] |
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256 | cmp eax,'1 ' |
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257 | je fs_yesramdisk_first |
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61 | halyavin | 258 | cmp eax,'FIRS' |
1 | ha | 259 | jne fs_noramdisk |
260 | |||
261 | fs_yesramdisk_first: |
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262 | |||
263 | cmp dword [esp+20],8 ; LBA read ramdisk |
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264 | jne fs_no_LBA_read_ramdisk |
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265 | |||
266 | mov eax,[esp+16] ; LBA block to read |
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267 | mov ecx,[esp+8] ; abs pointer to return area |
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268 | |||
269 | call LBA_read_ramdisk |
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270 | jmp file_system_return |
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271 | |||
272 | |||
273 | fs_no_LBA_read_ramdisk: |
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274 | |||
275 | cmp dword [esp+20],0 ; READ |
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276 | jne fs_noramdisk_read |
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277 | |||
278 | mov eax,[esp+4] ; fname |
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279 | add eax,2*12+1 |
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280 | mov ebx,[esp+16] ; block start |
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281 | inc ebx |
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282 | mov ecx,[esp+12] ; block count |
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283 | mov edx,[esp+8] ; return |
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284 | mov esi,[esp+0] |
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285 | sub esi,eax |
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286 | add esi,12+1 ; file name length |
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287 | call fileread |
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288 | |||
289 | jmp file_system_return |
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290 | |||
291 | |||
292 | fs_noramdisk_read: |
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293 | |||
294 | cmp dword [esp+20],1 ; WRITE |
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295 | jne fs_noramdisk_write |
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296 | |||
297 | mov eax,[esp+4] ; fname |
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298 | add eax,2*12+1 |
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299 | mov ebx,[esp+8] ; buffer |
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300 | mov ecx,[esp+12] ; count to write |
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301 | mov edx,0 ; create new |
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302 | call filesave |
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303 | |||
304 | ; eax=0 ok - eax=1 not enough free space |
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305 | |||
306 | jmp file_system_return |
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307 | |||
308 | fs_noramdisk_write: |
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309 | |||
310 | cmp dword [esp+20],16 ; START APPLICATION |
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311 | jne fs_noramdisk_start_application |
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312 | |||
313 | mov eax,[esp+4] ; fname |
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314 | add eax,2*12+1 |
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315 | |||
316 | xor ebx,ebx ; parameters to pass |
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61 | halyavin | 317 | cmp dword [esp+12],ebx;0 |
1 | ha | 318 | je no_fl_start_param |
61 | halyavin | 319 | mov ebx, [esp+12] |
320 | add ebx, std_application_base_address |
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1 | ha | 321 | no_fl_start_param: |
40 | halyavin | 322 | mov edx,[esp+16] ; flags |
1 | ha | 323 | |
324 | call start_application_fl |
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325 | |||
61 | halyavin | 326 | jmp file_system_startapp_return |
1 | ha | 327 | |
328 | fs_noramdisk_start_application: ;there's new code - Mihasik |
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329 | cmp dword [esp+20],2 ;DELETE |
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330 | jne fs_noramdisk_delete |
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331 | mov eax,[esp+4] ; fname |
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332 | add eax,2*12+1 |
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333 | call filedelete |
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334 | jmp file_system_return |
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335 | |||
336 | fs_noramdisk_delete: |
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337 | cmp dword [esp+20],12 ;GET TIME,DATE,SIZE AND ATTRS |
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338 | jb fs_noramdisk_getinfo |
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339 | cmp dword [esp+20],14 |
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340 | ja fs_noramdisk_getinfo |
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341 | mov eax,[esp+4] ; fname |
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342 | add eax,2*12+1 |
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343 | mov ebx,[esp+20] |
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344 | mov ecx,[esp+0] |
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345 | sub ecx,eax |
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346 | add ecx,12+1 ; file name length |
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347 | call rd_getfileinfo |
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348 | jmp file_system_return |
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349 | fs_noramdisk_getinfo: ;End of code - Mihasik |
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350 | |||
351 | fs_noramdisk: |
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352 | |||
353 | ;******************************************************************** |
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354 | mov eax,[edi+1] |
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355 | cmp eax,'FD ' |
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356 | je fs_yesflpdisk |
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61 | halyavin | 357 | cmp eax,'FLOP' |
1 | ha | 358 | jne fs_noflpdisk |
359 | |||
360 | fs_yesflpdisk: |
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361 | call reserve_flp |
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362 | |||
363 | cmp byte [edi+1+11],0 |
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364 | je fs_give_dir1 |
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365 | |||
366 | mov eax,[edi+1+12] |
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367 | cmp eax,'1 ' |
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368 | je fs_yesflpdisk_first |
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61 | halyavin | 369 | cmp eax,'FIRS' |
1 | ha | 370 | je fs_yesflpdisk_first |
371 | cmp eax,'2 ' |
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372 | je fs_yesflpdisk_second |
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61 | halyavin | 373 | cmp eax,'SECO' |
1 | ha | 374 | jne fs_noflpdisk |
375 | jmp fs_yesflpdisk_second |
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376 | |||
377 | fs_yesflpdisk_first: |
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378 | mov [flp_number],1 |
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379 | jmp fs_yesflpdisk_start |
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380 | fs_yesflpdisk_second: |
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381 | mov [flp_number],2 |
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382 | fs_yesflpdisk_start: |
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383 | cmp dword [esp+20],0 ; READ |
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384 | jne fs_noflpdisk_read |
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385 | |||
386 | mov eax,[esp+4] ; fname |
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387 | add eax,2*12+1 |
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388 | mov ebx,[esp+16] ; block start |
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389 | inc ebx |
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390 | mov ecx,[esp+12] ; block count |
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391 | mov edx,[esp+8] ; return |
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392 | mov esi,[esp+0] |
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393 | sub esi,eax |
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394 | add esi,12+1 ; file name length |
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395 | call floppy_fileread |
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396 | |||
397 | jmp file_system_return |
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398 | |||
399 | |||
400 | fs_noflpdisk_read: |
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401 | |||
402 | cmp dword [esp+20],1 ; WRITE |
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403 | jne fs_noflpdisk_write |
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404 | |||
405 | mov eax,[esp+4] ; fname |
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406 | add eax,2*12+1 |
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407 | mov ebx,[esp+8] ; buffer |
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408 | mov ecx,[esp+12] ; count to write |
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409 | mov edx,0 ; create new |
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410 | call floppy_filesave |
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411 | |||
412 | ; eax=0 ok - eax=1 not enough free space |
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413 | |||
414 | jmp file_system_return |
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415 | |||
416 | fs_noflpdisk_write: |
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417 | |||
418 | cmp dword [esp+20],2 ; DELETE |
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419 | jne fs_noflpdisk_delete |
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420 | |||
421 | mov eax,[esp+4] ; fname |
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422 | add eax,2*12+1 |
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423 | call floppy_filedelete |
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424 | mov [flp_status],0 |
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425 | jmp file_system_return |
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426 | |||
427 | fs_noflpdisk_delete: |
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428 | cmp dword [esp+20],16 ; START APPLICATION |
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429 | jne fs_noflpdisk_start_application |
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430 | |||
431 | mov eax,[esp+4] ; fname |
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432 | add eax,2*12+1 |
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433 | |||
434 | xor ebx,ebx ; parameters to pass |
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61 | halyavin | 435 | cmp dword [esp+12],ebx;0 |
1 | ha | 436 | je no_flp_start_param |
437 | mov ebx,[0x3010] |
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438 | mov ebx,[ebx+0x10] |
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439 | add ebx,[esp+12] |
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440 | |||
441 | no_flp_start_param: |
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40 | halyavin | 442 | mov edx,[esp+16] ; flags |
1 | ha | 443 | |
444 | call start_application_floppy |
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445 | |||
61 | halyavin | 446 | file_system_startapp_return: |
447 | mov ebx, [esp+24+24] ; do not modify ebx in application |
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1 | ha | 448 | jmp file_system_return |
449 | |||
450 | fs_noflpdisk_start_application: |
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451 | |||
452 | fs_noflpdisk: |
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453 | ;***************************************************************** |
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454 | |||
455 | mov eax,[edi+1] |
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456 | cmp eax,'HD0 ' |
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457 | je fs_yesharddisk_IDE0 |
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458 | cmp eax,'HD1 ' |
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459 | je fs_yesharddisk_IDE1 |
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460 | cmp eax,'HD2 ' |
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461 | je fs_yesharddisk_IDE2 |
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462 | cmp eax,'HD3 ' |
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463 | je fs_yesharddisk_IDE3 |
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464 | jmp old_path_harddisk |
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465 | fs_yesharddisk_IDE0: |
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466 | call reserve_hd1 |
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467 | mov [hdbase],0x1f0 |
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468 | mov [hdid],0x0 |
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469 | mov [hdpos],1 |
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470 | jmp fs_yesharddisk_partition |
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471 | fs_yesharddisk_IDE1: |
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472 | call reserve_hd1 |
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473 | mov [hdbase],0x1f0 |
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474 | mov [hdid],0x10 |
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475 | mov [hdpos],2 |
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476 | jmp fs_yesharddisk_partition |
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477 | fs_yesharddisk_IDE2: |
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478 | call reserve_hd1 |
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479 | mov [hdbase],0x170 |
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480 | mov [hdid],0x0 |
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481 | mov [hdpos],3 |
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482 | jmp fs_yesharddisk_partition |
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483 | fs_yesharddisk_IDE3: |
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484 | call reserve_hd1 |
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485 | mov [hdbase],0x170 |
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486 | mov [hdid],0x10 |
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487 | mov [hdpos],4 |
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488 | fs_yesharddisk_partition: |
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489 | ; call choice_necessity_partition |
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490 | ; jmp fs_yesharddisk_all |
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491 | jmp fs_for_new_semantic |
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492 | |||
493 | choice_necessity_partition: |
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494 | mov eax,[edi+1+12] |
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495 | call StringToNumber |
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496 | mov [fat32part],eax |
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497 | choice_necessity_partition_1: |
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498 | mov ecx,[hdpos] |
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499 | xor eax,eax |
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61 | halyavin | 500 | mov [0xfe10], eax ; entries in hd cache |
1 | ha | 501 | mov edx,0x40002 |
502 | search_partition_array: |
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503 | mov bl,[edx] |
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504 | movzx ebx,bl |
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505 | add eax,ebx |
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506 | inc edx |
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507 | loop search_partition_array |
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508 | sub eax,ebx |
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509 | add eax,[fat32part] |
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510 | dec eax |
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511 | xor edx,edx |
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512 | imul eax,100 |
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513 | add eax,0x4000a |
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514 | mov [transfer_adress],eax |
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515 | call partition_data_transfer_1 |
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516 | ret |
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517 | |||
518 | old_path_harddisk: |
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519 | mov eax,[edi+1] |
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520 | cmp eax,'HD ' |
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521 | je fs_yesharddisk |
||
61 | halyavin | 522 | cmp eax,'HARD' |
1 | ha | 523 | jne fs_noharddisk |
524 | |||
525 | fs_yesharddisk: |
||
526 | call reserve_hd1 |
||
527 | |||
528 | cmp dword [esp+20],8 ; LBA read |
||
529 | jne fs_no_LBA_read |
||
530 | mov eax,[esp+16] ; LBA block to read |
||
531 | lea ebx,[edi+1+12] ; pointer to FIRST/SECOND/THIRD/FOURTH |
||
532 | mov ecx,[esp+8] ; abs pointer to return area |
||
533 | call LBA_read |
||
534 | jmp file_system_return |
||
535 | |||
536 | fs_no_LBA_read: |
||
537 | |||
538 | cmp byte [edi+1+11],0 ; directory read |
||
539 | je fs_give_dir1 |
||
540 | fs_for_new_semantic: |
||
541 | call choice_necessity_partition |
||
542 | |||
543 | fs_yesharddisk_all: |
||
544 | mov eax,1 |
||
61 | halyavin | 545 | cmp dword [esp+20], 16 |
546 | jnz @f |
||
547 | neg eax |
||
548 | @@: mov ebx, [esp+24+24] |
||
1 | ha | 549 | cmp [hdpos],0 ; is hd base set? |
550 | jz file_system_return ; no |
||
551 | cmp [fat32part],0 ; is partition set? |
||
552 | jz file_system_return ; no |
||
553 | |||
554 | cmp dword [esp+20],0 ; READ |
||
555 | jne fs_noharddisk_read |
||
556 | |||
557 | mov eax,[esp+0] ; /fname |
||
558 | lea edi,[eax+12] |
||
559 | mov byte [eax],0 ; path to asciiz |
||
560 | inc eax ; filename start |
||
561 | |||
562 | mov ebx,[esp+12] ; count to read |
||
563 | mov ecx,[esp+8] ; buffer |
||
564 | mov edx,[esp+4] |
||
565 | add edx,12*2 ; dir start |
||
566 | sub edi,edx ; path length |
||
567 | mov esi,[esp+16] ; blocks to read |
||
568 | |||
569 | call file_read |
||
570 | |||
571 | mov edi,[esp+0] |
||
572 | mov byte [edi],'/' |
||
573 | |||
574 | jmp file_system_return |
||
575 | |||
576 | fs_noharddisk_read: |
||
577 | |||
578 | |||
579 | cmp dword [esp+20],1 ; WRITE |
||
580 | jne fs_noharddisk_write |
||
581 | |||
582 | mov eax,[esp+0] ; /fname |
||
583 | mov byte [eax],0 ; path to asciiz |
||
584 | inc eax ; filename start |
||
585 | |||
586 | mov ebx,[esp+12] ; count to write |
||
587 | mov ecx,[esp+8] ; buffer |
||
588 | mov edx,[esp+4] |
||
589 | add edx,12*2 ; path start |
||
590 | |||
591 | call file_write |
||
592 | |||
593 | mov edi,[esp+0] |
||
594 | mov byte [edi],'/' |
||
595 | |||
596 | ; eax=0 ok - eax=1 not enough free space |
||
597 | |||
598 | jmp file_system_return |
||
599 | |||
600 | |||
601 | fs_noharddisk_write: |
||
602 | |||
603 | cmp dword [esp+20],2 ; DELETE |
||
604 | jne fs_noharddisk_delete |
||
605 | |||
606 | mov eax,[esp+0] ; /dirname or /filename |
||
607 | mov byte [eax],0 ; path to asciiz |
||
608 | inc eax ; filename start |
||
609 | mov edx,[esp+4] |
||
610 | add edx,12*2 ; path start |
||
611 | |||
612 | call removedir |
||
613 | |||
614 | mov edi,[esp+0] |
||
615 | mov byte [edi],'/' |
||
616 | |||
617 | jmp file_system_return |
||
618 | |||
619 | fs_noharddisk_delete: |
||
620 | |||
621 | cmp dword [esp+20],3 ; APPEND |
||
622 | jne fs_noharddisk_append |
||
623 | |||
624 | mov eax,[esp+0] ; /dirname or /filename |
||
625 | mov byte [eax],0 ; path to asciiz |
||
626 | inc eax ; filename start |
||
627 | mov edx,[esp+4] |
||
628 | add edx,12*2 ; path start |
||
629 | mov ecx,[esp+8] ; buffer |
||
630 | mov ebx,[esp+12] ; count to write |
||
631 | mov esi,[esp+16] ; bytes to skip over |
||
632 | |||
633 | call file_append |
||
634 | |||
635 | mov edi,[esp+0] |
||
636 | mov byte [edi],'/' |
||
637 | |||
638 | jmp file_system_return |
||
639 | |||
640 | fs_noharddisk_append: |
||
641 | |||
642 | cmp dword [esp+20],4 ; MAKEDIR |
||
643 | jne fs_noharddisk_makedir |
||
644 | |||
645 | mov eax,[esp+0] ; /dirname |
||
646 | mov byte [eax],0 ; path to asciiz |
||
647 | inc eax ; filename start |
||
648 | mov edx,[esp+4] |
||
649 | add edx,12*2 ; path start |
||
650 | |||
651 | call makedir |
||
652 | |||
653 | mov edi,[esp+0] |
||
654 | mov byte [edi],'/' |
||
655 | |||
656 | jmp file_system_return |
||
657 | |||
658 | fs_noharddisk_makedir: |
||
659 | |||
660 | cmp dword [esp+20],5 ; RENAME |
||
661 | jne fs_noharddisk_rename |
||
662 | |||
663 | mov edi,[esp+0] ; start of source file name |
||
664 | add edi,12+1 ; continue after name |
||
665 | call expand_pathz ; convert destination name |
||
666 | |||
667 | mov eax,[edi+1] |
||
668 | cmp eax,'HD ' |
||
669 | je fs_rename_test1 |
||
61 | halyavin | 670 | cmp eax,'HARD' |
1 | ha | 671 | jne fs_rename_error |
672 | |||
673 | fs_rename_test1: |
||
674 | mov eax,[edi+1+12] |
||
675 | cmp eax,'1 ' |
||
676 | je fs_rename_start |
||
61 | halyavin | 677 | cmp eax,'FIRS' |
1 | ha | 678 | jne fs_rename_error |
679 | |||
680 | fs_rename_start: |
||
681 | mov byte [ebx],0 ; path to asciiz |
||
682 | inc ebx ; filename start |
||
683 | add edi,12*2 ; path start |
||
684 | cmp byte [ebx],0 |
||
685 | je fs_rename_error |
||
686 | cmp byte [ebx],32 |
||
687 | je fs_rename_error |
||
688 | |||
689 | mov eax,[esp+0] ; /filename |
||
690 | mov byte [eax],0 ; path to asciiz |
||
691 | inc eax ; filename start |
||
692 | mov edx,[esp+4] |
||
693 | add edx,12*2 ; path start |
||
694 | |||
695 | call rename |
||
696 | |||
697 | mov edi,[esp+0] |
||
698 | mov byte [edi],'/' |
||
699 | |||
700 | jmp file_system_return |
||
701 | |||
702 | fs_rename_error: |
||
703 | mov eax,4 ; partition not defined at hd |
||
704 | jmp file_system_return |
||
705 | |||
706 | fs_noharddisk_rename: |
||
707 | |||
708 | cmp dword [esp+20],12 ; get FILESIZE |
||
709 | jne fs_noharddisk_get_filesize |
||
710 | |||
711 | mov eax,[esp+0] ; /fname |
||
712 | lea edi,[eax+12] |
||
713 | mov byte [eax],0 ; path to asciiz |
||
714 | inc eax ; filename start |
||
715 | mov edx,[esp+4] |
||
716 | add edx,12*2 ; path start |
||
717 | sub edi,edx ; path length |
||
718 | |||
719 | call get_filesize |
||
720 | |||
721 | mov edi,[esp+0] |
||
722 | mov byte [edi],'/' |
||
723 | |||
724 | jmp file_system_return |
||
725 | |||
726 | fs_noharddisk_get_filesize: |
||
727 | |||
728 | cmp dword [esp+20],13 ; get FILEATTR |
||
729 | jne fs_noharddisk_get_fileattr |
||
730 | |||
731 | mov eax,[esp+0] ; /dirname |
||
732 | mov byte [eax],0 ; path to asciiz |
||
733 | inc eax ; filename start |
||
734 | mov edx,[esp+4] |
||
735 | add edx,12*2 ; path start |
||
736 | |||
737 | call get_fileattr |
||
738 | |||
739 | mov edi,[esp+0] |
||
740 | mov byte [edi],'/' |
||
741 | |||
742 | jmp file_system_return |
||
743 | |||
744 | fs_noharddisk_get_fileattr: |
||
745 | |||
746 | cmp dword [esp+20],14 ; get FILEDATE |
||
747 | jne fs_noharddisk_get_filedate |
||
748 | |||
749 | mov eax,[esp+0] ; /dirname |
||
750 | mov byte [eax],0 ; path to asciiz |
||
751 | inc eax ; filename start |
||
752 | mov edx,[esp+4] |
||
753 | add edx,12*2 ; path start |
||
754 | |||
755 | call get_filedate |
||
756 | |||
757 | mov edi,[esp+0] |
||
758 | mov byte [edi],'/' |
||
759 | |||
760 | jmp file_system_return |
||
761 | |||
762 | fs_noharddisk_get_filedate: |
||
763 | |||
764 | cmp dword [esp+20],16 ; START APPLICATION |
||
765 | jne fs_noharddisk_start_application |
||
766 | |||
767 | mov eax,[esp+4] ; fname |
||
768 | add eax,12*2 |
||
769 | |||
770 | mov ebx,[esp+0] ; length |
||
771 | sub ebx,eax |
||
772 | add ebx,12 |
||
773 | |||
774 | mov ecx,[esp+4] ; work area |
||
775 | add ecx,512 |
||
776 | |||
777 | xor ebp,ebp ; parameters to pass |
||
61 | halyavin | 778 | cmp dword [esp+12],ebp;0 |
1 | ha | 779 | je no_hd_start_param |
61 | halyavin | 780 | mov ebp, [esp+12] |
781 | add ebp, std_application_base_address |
||
1 | ha | 782 | no_hd_start_param: |
40 | halyavin | 783 | mov edx,[esp+16] ; flags |
1 | ha | 784 | |
785 | call start_application_hd |
||
786 | |||
61 | halyavin | 787 | jmp file_system_startapp_return |
1 | ha | 788 | |
789 | fs_noharddisk_start_application: |
||
790 | |||
791 | fs_noharddisk: |
||
61 | halyavin | 792 | ; \begin{diamond}[18.03.2006] |
793 | mov eax, 5 ; file not found |
||
794 | ; а может быть, возвращать другой код ошибки? |
||
795 | cmp dword [esp+20], 16 |
||
796 | jnz @f |
||
797 | neg eax |
||
798 | @@: mov ebx, [esp+24+24] ; do not change ebx in application |
||
799 | ; \end{diamond}[18.03.2006] |
||
1 | ha | 800 | |
801 | file_system_return: |
||
802 | |||
803 | add esp,24 |
||
804 | |||
805 | mov [esp+36],eax |
||
806 | mov [esp+24],ebx |
||
807 | ret |
||
808 | |||
809 | |||
810 | fs_give_dir1: |
||
811 | |||
61 | halyavin | 812 | ; \begin{diamond}[18.03.2006] |
813 | ; /RD,/FD,/HD - only read is allowed |
||
814 | ; other operations return "access denied", eax=10 |
||
815 | ; (execute operation returns eax=-10) |
||
816 | cmp dword [esp+20], 0 |
||
817 | jz .read |
||
818 | add esp, 20 |
||
819 | pop ecx |
||
820 | mov eax, 10 |
||
821 | cmp ecx, 16 |
||
822 | jnz @f |
||
823 | neg eax |
||
824 | @@: mov [esp+36], eax |
||
825 | ret |
||
826 | .read: |
||
827 | ; \end{diamond}[18.03.2006] |
||
828 | mov al,0x10 |
||
1 | ha | 829 | mov ebx,1 |
830 | mov edi,[esp+8] |
||
831 | mov esi,dir1 |
||
832 | fs_d1_new: |
||
833 | mov ecx,11 |
||
61 | halyavin | 834 | ; cld |
1 | ha | 835 | rep movsb |
836 | stosb |
||
837 | add edi,32-11-1 |
||
838 | dec ebx |
||
839 | jne fs_d1_new |
||
840 | |||
841 | add esp,24 |
||
842 | |||
61 | halyavin | 843 | and dword [esp+36],0 ; ok read |
1 | ha | 844 | mov dword [esp+24],32*1 ; dir/data size |
845 | ret |
||
846 | |||
847 | |||
848 | |||
849 | LBA_read_ramdisk: |
||
850 | |||
851 | cmp [lba_read_enabled],1 |
||
852 | je lbarrl1 |
||
853 | |||
854 | xor ebx,ebx |
||
855 | mov eax,2 |
||
856 | ret |
||
857 | |||
858 | lbarrl1: |
||
859 | |||
860 | cmp eax,18*2*80 |
||
861 | jb lbarrl2 |
||
862 | xor ebx,ebx |
||
863 | mov eax,3 |
||
864 | ret |
||
865 | |||
866 | lbarrl2: |
||
867 | |||
868 | pushad |
||
869 | |||
870 | call restorefatchain |
||
871 | |||
872 | mov edi,ecx |
||
873 | mov esi,eax |
||
874 | |||
875 | shl esi,9 |
||
876 | add esi,0x100000 |
||
877 | mov ecx,512/4 |
||
61 | halyavin | 878 | ; cld |
1 | ha | 879 | rep movsd |
880 | |||
881 | popad |
||
882 | |||
883 | xor ebx,ebx |
||
884 | xor eax,eax |
||
885 | ret |
||
886 | |||
887 | LBA_read: |
||
888 | |||
889 | ; IN: |
||
890 | ; |
||
891 | ; eax = LBA block to read |
||
892 | ; ebx = pointer to FIRST/SECOND/THIRD/FOURTH |
||
893 | ; ecx = abs pointer to return area |
||
894 | |||
895 | cmp [lba_read_enabled],1 |
||
896 | je lbarl1 |
||
897 | mov eax,2 |
||
898 | ret |
||
899 | |||
900 | lbarl1: |
||
901 | |||
902 | ; call reserve_hd1 |
||
903 | |||
904 | push eax |
||
905 | push ecx |
||
906 | |||
907 | mov edi,hd_address_table |
||
908 | mov esi,dir1 |
||
909 | mov eax,[ebx] |
||
910 | mov edx,'1 ' |
||
911 | mov ecx,4 |
||
912 | blar0: |
||
913 | cmp eax,[esi] |
||
914 | je blar2 |
||
915 | cmp eax,edx |
||
916 | je blar2 |
||
917 | inc edx |
||
918 | add edi,8 |
||
919 | add esi,11 |
||
920 | dec ecx |
||
921 | jnz blar0 |
||
922 | |||
923 | mov eax,1 |
||
924 | mov ebx,1 |
||
925 | jmp LBA_read_ret |
||
926 | |||
927 | blar2: |
||
928 | mov eax,[edi+0] |
||
929 | mov ebx,[edi+4] |
||
930 | |||
931 | call wait_for_hd_idle |
||
932 | |||
933 | ; eax = hd port |
||
934 | ; ebx = set for primary (0x00) or slave (0x10) |
||
935 | |||
936 | cli |
||
937 | |||
938 | mov edx,eax |
||
939 | inc edx |
||
940 | xor eax,eax |
||
941 | out dx,al |
||
942 | inc edx |
||
943 | inc eax |
||
944 | out dx,al |
||
945 | inc edx |
||
946 | mov eax,[esp+4] |
||
947 | out dx,al |
||
948 | shr eax,8 |
||
949 | inc edx |
||
950 | out dx,al |
||
951 | shr eax,8 |
||
952 | inc edx |
||
953 | out dx,al |
||
954 | shr eax,8 |
||
955 | inc edx |
||
956 | and al,1+2+4+8 |
||
957 | add al,bl |
||
958 | add al,128+64+32 |
||
959 | out dx,al |
||
960 | |||
961 | inc edx |
||
962 | mov al,20h |
||
963 | out dx,al |
||
964 | |||
965 | sti |
||
966 | |||
967 | call wait_for_sector_buffer |
||
968 | |||
969 | cli |
||
970 | |||
971 | mov edi,[esp+0] |
||
972 | mov ecx,256 |
||
973 | sub edx,7 |
||
974 | cld |
||
975 | rep insw |
||
976 | |||
977 | sti |
||
978 | |||
979 | xor eax,eax |
||
980 | xor ebx,ebx |
||
981 | |||
982 | LBA_read_ret: |
||
983 | |||
984 | mov [hd1_status],0 |
||
985 | add esp,2*4 |
||
986 | |||
987 | ret |
||
988 | |||
989 | |||
990 | expand_pathz: |
||
991 | ; IN: |
||
992 | ; esi = asciiz path & file |
||
993 | ; edi = buffer for path & file name |
||
994 | ; OUT: |
||
995 | ; edi = directory & file : / 11 + / 11 + / 11 - zero terminated |
||
996 | ; ebx = /file name - zero terminated |
||
997 | ; esi = pointer after source |
||
998 | |||
999 | push eax |
||
1000 | push ecx |
||
1001 | push edi ;[esp+0] |
||
1002 | |||
1003 | pathz_start: |
||
1004 | mov byte [edi],'/' |
||
1005 | inc edi |
||
1006 | mov al,32 |
||
1007 | mov ecx,11 |
||
1008 | cld |
||
1009 | rep stosb ; clear filename area |
||
1010 | sub edi,11 |
||
1011 | mov ebx,edi ; start of dir/file name |
||
1012 | |||
1013 | pathz_new_char: |
||
1014 | mov al,[esi] |
||
1015 | inc esi |
||
1016 | cmp al,0 |
||
1017 | je pathz_end |
||
1018 | |||
1019 | cmp al,'/' |
||
1020 | jne pathz_not_path |
||
1021 | cmp edi,ebx ; skip first '/' |
||
1022 | jz pathz_new_char |
||
1023 | lea edi,[ebx+11] ; start of next directory |
||
1024 | jmp pathz_start |
||
1025 | |||
1026 | pathz_not_path: |
||
1027 | cmp al,'.' |
||
1028 | jne pathz_not_ext |
||
1029 | lea edi,[ebx+8] ; start of extension |
||
1030 | jmp pathz_new_char |
||
1031 | |||
1032 | pathz_not_ext: |
||
1033 | cmp al,'a' |
||
1034 | jb pathz_not_low |
||
1035 | cmp al,'z' |
||
1036 | ja pathz_not_low |
||
1037 | sub al,0x20 ; char to uppercase |
||
1038 | |||
1039 | pathz_not_low: |
||
1040 | mov [edi],al |
||
1041 | inc edi |
||
1042 | mov eax,[esp+0] ; start_of_dest_path |
||
1043 | add eax,512 ; keep maximum path under 512 bytes |
||
1044 | cmp edi,eax |
||
1045 | jb pathz_new_char |
||
1046 | |||
1047 | pathz_end: |
||
1048 | cmp ebx,edi ; if path end with '/' |
||
1049 | jnz pathz_put_zero ; go back 1 level |
||
1050 | sub ebx,12 |
||
1051 | |||
1052 | pathz_put_zero: |
||
1053 | mov byte [ebx+11],0 |
||
1054 | dec ebx ; include '/' char into file name |
||
1055 | pop edi |
||
1056 | pop ecx |
||
1057 | pop eax |
||
1058 | ret |
||
1059 | |||
1060 | ;******************************************* |
||
1061 | ;* string to number |
||
1062 | ;* input eax - 4 byte string |
||
1063 | ;* output eax - number |
||
1064 | ;******************************************* |
||
1065 | StringToNumber: |
||
1066 | ; ПЕРЕВОД СТРОКОВОГО ЧИСЛА В ЧИСЛОВОЙ ВИД |
||
1067 | ; Вход: |
||
1068 | ; EDI - адрес строки с числом. Конец числа отмечен кодом 0Dh |
||
1069 | ; Выход: |
||
1070 | ; CF - индикатор ошибок: |
||
1071 | ; 0 - ошибок нет; |
||
1072 | ; 1 - ошибка |
||
1073 | ; Если CF=0, то AX - число. |
||
1074 | |||
1075 | push bx |
||
1076 | push cx |
||
1077 | push dx |
||
1078 | push edi |
||
1079 | mov [partition_string],eax |
||
1080 | mov edi,partition_string |
||
1081 | xor cx,cx |
||
1082 | i1: |
||
1083 | mov al,[edi] |
||
1084 | cmp al,32 ;13 |
||
1085 | je i_exit |
||
1086 | ; cmp al,'0' |
||
1087 | ; jb err |
||
1088 | ; cmp al,'9' |
||
1089 | ; ja err |
||
1090 | sub al,48 |
||
1091 | shl cx,1 |
||
1092 | jc err |
||
1093 | mov bx,cx |
||
1094 | shl cx,1 |
||
1095 | jc err |
||
1096 | shl cx,1 |
||
1097 | jc err |
||
1098 | add cx,bx |
||
1099 | jc err |
||
1100 | cbw |
||
1101 | add cx,ax |
||
1102 | jc err |
||
1103 | i3: |
||
1104 | inc edi |
||
1105 | jmp i1 |
||
1106 | i_exit: |
||
1107 | mov ax,cx |
||
1108 | clc |
||
1109 | i4: |
||
1110 | movzx eax,ax |
||
1111 | pop edi |
||
1112 | pop dx |
||
1113 | pop cx |
||
1114 | pop bx |
||
1115 | ret |
||
1116 | |||
1117 | err: |
||
1118 | stc |
||
1119 | jmp i4 |
||
1120 | |||
1121 | partition_string: dd 0 |
||
1122 | db 32>=>>=> |