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| Rev 4923 | Rev 5116 | ||
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| 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 2 | ;; ;; |
2 | ;; ;; |
| 3 | ;; Contains ext2 initialization, plus syscall handling code. ;; |
3 | ;; Contains ext2 initialization, plus syscall handling code. ;; |
| 4 | ;; ;; |
4 | ;; ;; |
| 5 | ;; Copyright (C) KolibriOS team 2013-2014. All rights reserved. ;; |
5 | ;; Copyright (C) KolibriOS team 2013-2014. All rights reserved. ;; |
| 6 | ;; Distributed under terms of the GNU General Public License ;; |
6 | ;; Distributed under terms of the GNU General Public License ;; |
| 7 | ;; ;; |
7 | ;; ;; |
| 8 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
8 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 9 | 9 | ||
| 10 | $Revision: 4891 $ |
10 | $Revision: 5089 $ |
| 11 | 11 | ||
| 12 | 12 | ||
| 13 | include 'ext2.inc' |
13 | include 'ext2.inc' |
| 14 | include 'blocks.inc' |
14 | include 'blocks.inc' |
| 15 | include 'inode.inc' |
15 | include 'inode.inc' |
| 16 | include 'resource.inc' |
16 | include 'resource.inc' |
| 17 | 17 | ||
| 18 | iglobal |
18 | iglobal |
| 19 | align 4 |
19 | align 4 |
| 20 | ext2_user_functions: |
20 | ext2_user_functions: |
| 21 | dd ext2_free |
21 | dd ext2_free |
| 22 | dd (ext2_user_functions_end - ext2_user_functions - 4) / 4 |
22 | dd (ext2_user_functions_end - ext2_user_functions - 4) / 4 |
| 23 | dd ext2_Read |
23 | dd ext2_Read |
| 24 | dd ext2_ReadFolder |
24 | dd ext2_ReadFolder |
| 25 | dd ext2_Rewrite |
25 | dd ext2_Rewrite |
| 26 | dd ext2_Write |
26 | dd ext2_Write |
| 27 | dd ext2_SetFileEnd |
27 | dd ext2_SetFileEnd |
| 28 | dd ext2_GetFileInfo |
28 | dd ext2_GetFileInfo |
| 29 | dd ext2_SetFileInfo |
29 | dd ext2_SetFileInfo |
| 30 | dd 0 |
30 | dd 0 |
| 31 | dd ext2_Delete |
31 | dd ext2_Delete |
| 32 | dd ext2_CreateFolder |
32 | dd ext2_CreateFolder |
| 33 | ext2_user_functions_end: |
33 | ext2_user_functions_end: |
| 34 | endg |
34 | endg |
| 35 | 35 | ||
| 36 | ;--------------------------------------------------------------------- |
36 | ;--------------------------------------------------------------------- |
| 37 | ; Locks up an ext2 partition. |
37 | ; Locks up an ext2 partition. |
| 38 | ; Input: ebp = pointer to EXTFS. |
38 | ; Input: ebp = pointer to EXTFS. |
| 39 | ;--------------------------------------------------------------------- |
39 | ;--------------------------------------------------------------------- |
| 40 | proc ext2_lock |
40 | proc ext2_lock |
| 41 | lea ecx, [ebp + EXTFS.lock] |
41 | lea ecx, [ebp + EXTFS.lock] |
| 42 | jmp mutex_lock |
42 | jmp mutex_lock |
| 43 | endp |
43 | endp |
| 44 | 44 | ||
| 45 | ;--------------------------------------------------------------------- |
45 | ;--------------------------------------------------------------------- |
| 46 | ; Unlocks up an ext2 partition. |
46 | ; Unlocks up an ext2 partition. |
| 47 | ; Input: ebp = pointer to EXTFS. |
47 | ; Input: ebp = pointer to EXTFS. |
| 48 | ;--------------------------------------------------------------------- |
48 | ;--------------------------------------------------------------------- |
| 49 | proc ext2_unlock |
49 | proc ext2_unlock |
| 50 | lea ecx, [ebp + EXTFS.lock] |
50 | lea ecx, [ebp + EXTFS.lock] |
| 51 | jmp mutex_unlock |
51 | jmp mutex_unlock |
| 52 | endp |
52 | endp |
| 53 | 53 | ||
| 54 | ;--------------------------------------------------------------------- |
54 | ;--------------------------------------------------------------------- |
| 55 | ; Check if it's a valid ext* superblock. |
55 | ; Check if it's a valid ext* superblock. |
| 56 | ; Input: ebp: first three fields of PARTITION structure. |
56 | ; Input: ebp: first three fields of PARTITION structure. |
| 57 | ; ebx + 512: points to 512-bytes buffer that can be used for anything. |
57 | ; ebx + 512: points to 512-bytes buffer that can be used for anything. |
| 58 | ; Output: eax: clear if can't create partition; set to EXTFS otherwise. |
58 | ; Output: eax: clear if can't create partition; set to EXTFS otherwise. |
| 59 | ;--------------------------------------------------------------------- |
59 | ;--------------------------------------------------------------------- |
| 60 | proc ext2_create_partition |
60 | proc ext2_create_partition |
| 61 | push ebx |
61 | push ebx |
| - | 62 | cmp dword [esi+DISK.MediaInfo.SectorSize], 512 |
|
| - | 63 | jnz .fail |
|
| 62 | 64 | ||
| 63 | mov eax, 2 ; Superblock starts at 1024-bytes. |
65 | mov eax, 2 ; Superblock starts at 1024-bytes. |
| 64 | add ebx, 512 ; Get pointer to fs-specific buffer. |
66 | add ebx, 512 ; Get pointer to fs-specific buffer. |
| 65 | call fs_read32_sys |
67 | call fs_read32_sys |
| 66 | test eax, eax |
68 | test eax, eax |
| 67 | jnz .fail |
69 | jnz .fail |
| 68 | 70 | ||
| 69 | ; Allowed 1KiB, 2KiB, 4KiB, 8KiB. |
71 | ; Allowed 1KiB, 2KiB, 4KiB, 8KiB. |
| 70 | cmp [ebx + EXT2_SB_STRUC.log_block_size], 3 |
72 | cmp [ebx + EXT2_SB_STRUC.log_block_size], 3 |
| 71 | ja .fail |
73 | ja .fail |
| 72 | 74 | ||
| 73 | cmp [ebx + EXT2_SB_STRUC.magic], EXT2_SUPER_MAGIC |
75 | cmp [ebx + EXT2_SB_STRUC.magic], EXT2_SUPER_MAGIC |
| 74 | jne .fail |
76 | jne .fail |
| 75 | 77 | ||
| 76 | cmp [ebx + EXT2_SB_STRUC.state], EXT2_VALID_FS |
78 | cmp [ebx + EXT2_SB_STRUC.state], EXT2_VALID_FS |
| 77 | jne .fail |
79 | jne .fail |
| 78 | 80 | ||
| 79 | ; Can't have no inodes per group. |
81 | ; Can't have no inodes per group. |
| 80 | cmp [ebx + EXT2_SB_STRUC.inodes_per_group], 0 |
82 | cmp [ebx + EXT2_SB_STRUC.inodes_per_group], 0 |
| 81 | je .fail |
83 | je .fail |
| 82 | 84 | ||
| 83 | ; If incompatible features required, unusable superblock. |
85 | ; If incompatible features required, unusable superblock. |
| 84 | mov eax, [ebx + EXT2_SB_STRUC.feature_incompat] |
86 | mov eax, [ebx + EXT2_SB_STRUC.feature_incompat] |
| 85 | test eax, not EXT4_FEATURE_INCOMPAT_SUPP |
87 | test eax, not EXT4_FEATURE_INCOMPAT_SUPP |
| 86 | jz .setup |
88 | jz .setup |
| 87 | 89 | ||
| 88 | .fail: |
90 | .fail: |
| 89 | ; Not a (valid/usable) EXT2 superblock. |
91 | ; Not a (valid/usable) EXT2 superblock. |
| 90 | pop ebx |
92 | pop ebx |
| 91 | xor eax, eax |
93 | xor eax, eax |
| 92 | ret |
94 | ret |
| 93 | 95 | ||
| 94 | .setup: |
96 | .setup: |
| 95 | movi eax, sizeof.EXTFS |
97 | movi eax, sizeof.EXTFS |
| 96 | call malloc |
98 | call malloc |
| 97 | test eax, eax |
99 | test eax, eax |
| 98 | jz ext2_create_partition.fail |
100 | jz ext2_create_partition.fail |
| 99 | 101 | ||
| 100 | ; Store the first sector field. |
102 | ; Store the first sector field. |
| 101 | mov ecx, dword[ebp + PARTITION.FirstSector] |
103 | mov ecx, dword[ebp + PARTITION.FirstSector] |
| 102 | mov dword[eax + EXTFS.FirstSector], ecx |
104 | mov dword[eax + EXTFS.FirstSector], ecx |
| 103 | mov ecx, dword [ebp + PARTITION.FirstSector+4] |
105 | mov ecx, dword [ebp + PARTITION.FirstSector+4] |
| 104 | mov dword [eax + EXTFS.FirstSector+4], ecx |
106 | mov dword [eax + EXTFS.FirstSector+4], ecx |
| 105 | 107 | ||
| 106 | ; The length field. |
108 | ; The length field. |
| 107 | mov ecx, dword[ebp + PARTITION.Length] |
109 | mov ecx, dword[ebp + PARTITION.Length] |
| 108 | mov dword[eax + EXTFS.Length], ecx |
110 | mov dword[eax + EXTFS.Length], ecx |
| 109 | mov ecx, dword[ebp + PARTITION.Length+4] |
111 | mov ecx, dword[ebp + PARTITION.Length+4] |
| 110 | mov dword[eax + EXTFS.Length+4], ecx |
112 | mov dword[eax + EXTFS.Length+4], ecx |
| 111 | 113 | ||
| 112 | ; The disk field. |
114 | ; The disk field. |
| 113 | mov ecx, [ebp + PARTITION.Disk] |
115 | mov ecx, [ebp + PARTITION.Disk] |
| 114 | mov [eax + EXTFS.Disk], ecx |
116 | mov [eax + EXTFS.Disk], ecx |
| 115 | 117 | ||
| 116 | mov [eax + EXTFS.FSUserFunctions], ext2_user_functions |
118 | mov [eax + EXTFS.FSUserFunctions], ext2_user_functions |
| 117 | 119 | ||
| 118 | push ebp esi edi |
120 | push ebp esi edi |
| 119 | 121 | ||
| 120 | mov ebp, eax |
122 | mov ebp, eax |
| 121 | lea ecx, [eax + EXTFS.lock] |
123 | lea ecx, [eax + EXTFS.lock] |
| 122 | call mutex_init |
124 | call mutex_init |
| 123 | 125 | ||
| 124 | ; Copy superblock from buffer to reserved memory. |
126 | ; Copy superblock from buffer to reserved memory. |
| 125 | mov esi, ebx |
127 | mov esi, ebx |
| 126 | lea edi, [ebp + EXTFS.superblock] |
128 | lea edi, [ebp + EXTFS.superblock] |
| 127 | mov ecx, 512/4 |
129 | mov ecx, 512/4 |
| 128 | rep movsd |
130 | rep movsd |
| 129 | 131 | ||
| 130 | ; Get total groups. |
132 | ; Get total groups. |
| 131 | mov eax, [ebx + EXT2_SB_STRUC.blocks_count] |
133 | mov eax, [ebx + EXT2_SB_STRUC.blocks_count] |
| 132 | sub eax, [ebx + EXT2_SB_STRUC.first_data_block] |
134 | sub eax, [ebx + EXT2_SB_STRUC.first_data_block] |
| 133 | dec eax |
135 | dec eax |
| 134 | xor edx, edx |
136 | xor edx, edx |
| 135 | div [ebx + EXT2_SB_STRUC.blocks_per_group] |
137 | div [ebx + EXT2_SB_STRUC.blocks_per_group] |
| 136 | inc eax |
138 | inc eax |
| 137 | mov [ebp + EXTFS.groups_count], eax |
139 | mov [ebp + EXTFS.groups_count], eax |
| 138 | 140 | ||
| 139 | ; Get log(block_size), such that 1,2,3,4 equ 1KiB,2KiB,4KiB,8KiB. |
141 | ; Get log(block_size), such that 1,2,3,4 equ 1KiB,2KiB,4KiB,8KiB. |
| 140 | mov ecx, [ebx + EXT2_SB_STRUC.log_block_size] |
142 | mov ecx, [ebx + EXT2_SB_STRUC.log_block_size] |
| 141 | inc ecx |
143 | inc ecx |
| 142 | mov [ebp + EXTFS.log_block_size], ecx |
144 | mov [ebp + EXTFS.log_block_size], ecx |
| 143 | 145 | ||
| 144 | ; 512-byte blocks in ext2 blocks. |
146 | ; 512-byte blocks in ext2 blocks. |
| 145 | mov eax, 1 |
147 | mov eax, 1 |
| 146 | shl eax, cl |
148 | shl eax, cl |
| 147 | mov [ebp + EXTFS.count_block_in_block], eax |
149 | mov [ebp + EXTFS.count_block_in_block], eax |
| 148 | 150 | ||
| 149 | ; Get block_size/4 (we'll find square later). |
151 | ; Get block_size/4 (we'll find square later). |
| 150 | shl eax, 7 |
152 | shl eax, 7 |
| 151 | mov [ebp + EXTFS.count_pointer_in_block], eax |
153 | mov [ebp + EXTFS.count_pointer_in_block], eax |
| 152 | mov edx, eax |
154 | mov edx, eax |
| 153 | 155 | ||
| 154 | ; Get block size. |
156 | ; Get block size. |
| 155 | shl eax, 2 |
157 | shl eax, 2 |
| 156 | mov [ebp + EXTFS.block_size], eax |
158 | mov [ebp + EXTFS.block_size], eax |
| 157 | 159 | ||
| 158 | ; Save block size for 2 kernel_alloc calls. |
160 | ; Save block size for 2 kernel_alloc calls. |
| 159 | push eax eax |
161 | push eax eax |
| 160 | 162 | ||
| 161 | mov eax, edx |
163 | mov eax, edx |
| 162 | mul edx |
164 | mul edx |
| 163 | mov [ebp + EXTFS.count_pointer_in_block_square], eax |
165 | mov [ebp + EXTFS.count_pointer_in_block_square], eax |
| 164 | 166 | ||
| 165 | ; Have temporary block storage for get_inode procedure, and one for global procedure. |
167 | ; Have temporary block storage for get_inode procedure, and one for global procedure. |
| 166 | KERNEL_ALLOC [ebp + EXTFS.ext2_save_block], .error |
168 | KERNEL_ALLOC [ebp + EXTFS.ext2_save_block], .error |
| 167 | KERNEL_ALLOC [ebp + EXTFS.ext2_temp_block], .error |
169 | KERNEL_ALLOC [ebp + EXTFS.ext2_temp_block], .error |
| 168 | 170 | ||
| 169 | mov [ebp + EXTFS.partition_flags], 0x00000000 |
171 | mov [ebp + EXTFS.partition_flags], 0x00000000 |
| 170 | mov eax, [ebx + EXT2_SB_STRUC.feature_ro_compat] |
172 | mov eax, [ebx + EXT2_SB_STRUC.feature_ro_compat] |
| 171 | and eax, not EXT2_FEATURE_RO_COMPAT_SUPP |
173 | and eax, not EXT2_FEATURE_RO_COMPAT_SUPP |
| 172 | jnz .read_only |
174 | jnz .read_only |
| 173 | 175 | ||
| 174 | mov eax, [ebx + EXT2_SB_STRUC.feature_incompat] |
176 | mov eax, [ebx + EXT2_SB_STRUC.feature_incompat] |
| 175 | and eax, EXT4_FEATURE_INCOMPAT_W_NOT_SUPP |
177 | and eax, EXT4_FEATURE_INCOMPAT_W_NOT_SUPP |
| 176 | jz @F |
178 | jz @F |
| 177 | 179 | ||
| 178 | .read_only: |
180 | .read_only: |
| 179 | ; Mark as read-only. |
181 | ; Mark as read-only. |
| 180 | or [ebp + EXTFS.partition_flags], EXT2_RO |
182 | or [ebp + EXTFS.partition_flags], EXT2_RO |
| 181 | @@: |
183 | @@: |
| 182 | mov ecx, [ebx + EXT2_SB_STRUC.blocks_per_group] |
184 | mov ecx, [ebx + EXT2_SB_STRUC.blocks_per_group] |
| 183 | mov [ebp + EXTFS.blocks_per_group], ecx |
185 | mov [ebp + EXTFS.blocks_per_group], ecx |
| 184 | 186 | ||
| 185 | movzx ecx, word[ebx + EXT2_SB_STRUC.inode_size] |
187 | movzx ecx, word[ebx + EXT2_SB_STRUC.inode_size] |
| 186 | mov [ebp + EXTFS.inode_size], ecx |
188 | mov [ebp + EXTFS.inode_size], ecx |
| 187 | 189 | ||
| 188 | ; Allocate for three inodes (loop would be overkill). |
190 | ; Allocate for three inodes (loop would be overkill). |
| 189 | push ecx ecx ecx |
191 | push ecx ecx ecx |
| 190 | 192 | ||
| 191 | KERNEL_ALLOC [ebp + EXTFS.ext2_save_inode], .error |
193 | KERNEL_ALLOC [ebp + EXTFS.ext2_save_inode], .error |
| 192 | KERNEL_ALLOC [ebp + EXTFS.ext2_temp_inode], .error |
194 | KERNEL_ALLOC [ebp + EXTFS.ext2_temp_inode], .error |
| 193 | KERNEL_ALLOC [ebp + EXTFS.root_inode], .error |
195 | KERNEL_ALLOC [ebp + EXTFS.root_inode], .error |
| 194 | 196 | ||
| 195 | ; Read root inode. |
197 | ; Read root inode. |
| 196 | mov ebx, eax |
198 | mov ebx, eax |
| 197 | mov eax, EXT2_ROOT_INO |
199 | mov eax, EXT2_ROOT_INO |
| 198 | call ext2_inode_read |
200 | call ext2_inode_read |
| 199 | 201 | ||
| 200 | test eax, eax |
202 | test eax, eax |
| 201 | jnz .error |
203 | jnz .error |
| 202 | 204 | ||
| 203 | ;call ext2_sb_update |
205 | ;call ext2_sb_update |
| 204 | ; Sync the disk. |
206 | ; Sync the disk. |
| 205 | ;mov esi, [ebp + PARTITION.Disk] |
207 | ;mov esi, [ebp + PARTITION.Disk] |
| 206 | ;call disk_sync ; eax contains error code, if any. |
208 | ;call disk_sync ; eax contains error code, if any. |
| 207 | 209 | ||
| 208 | mov eax, ebp ; Return pointer to EXTFS. |
210 | mov eax, ebp ; Return pointer to EXTFS. |
| 209 | pop edi esi ebp ebx |
211 | pop edi esi ebp ebx |
| 210 | ret |
212 | ret |
| 211 | 213 | ||
| 212 | ; Error in setting up. |
214 | ; Error in setting up. |
| 213 | .error: |
215 | .error: |
| 214 | ; Free save block. |
216 | ; Free save block. |
| 215 | KERNEL_FREE [ebp + EXTFS.ext2_save_block], .fail |
217 | KERNEL_FREE [ebp + EXTFS.ext2_save_block], .fail |
| 216 | 218 | ||
| 217 | ; Temporary block. |
219 | ; Temporary block. |
| 218 | KERNEL_FREE [ebp + EXTFS.ext2_temp_block], .fail |
220 | KERNEL_FREE [ebp + EXTFS.ext2_temp_block], .fail |
| 219 | 221 | ||
| 220 | ; All inodes. |
222 | ; All inodes. |
| 221 | KERNEL_FREE [ebp + EXTFS.ext2_save_inode], .fail |
223 | KERNEL_FREE [ebp + EXTFS.ext2_save_inode], .fail |
| 222 | KERNEL_FREE [ebp + EXTFS.ext2_temp_inode], .fail |
224 | KERNEL_FREE [ebp + EXTFS.ext2_temp_inode], .fail |
| 223 | KERNEL_FREE [ebp + EXTFS.root_inode], .fail |
225 | KERNEL_FREE [ebp + EXTFS.root_inode], .fail |
| 224 | 226 | ||
| 225 | mov eax, ebp |
227 | mov eax, ebp |
| 226 | call free |
228 | call free |
| 227 | 229 | ||
| 228 | jmp .fail |
230 | jmp .fail |
| 229 | endp |
231 | endp |
| 230 | 232 | ||
| 231 | ; FUNCTIONS PROVIDED BY SYSCALLS. |
233 | ; FUNCTIONS PROVIDED BY SYSCALLS. |
| 232 | 234 | ||
| 233 | ;--------------------------------------------------------------------- |
235 | ;--------------------------------------------------------------------- |
| 234 | ; Frees up all ext2 structures. |
236 | ; Frees up all ext2 structures. |
| 235 | ; Input: eax = pointer to EXTFS. |
237 | ; Input: eax = pointer to EXTFS. |
| 236 | ;--------------------------------------------------------------------- |
238 | ;--------------------------------------------------------------------- |
| 237 | proc ext2_free |
239 | proc ext2_free |
| 238 | push ebp |
240 | push ebp |
| 239 | 241 | ||
| 240 | xchg ebp, eax |
242 | xchg ebp, eax |
| 241 | stdcall kernel_free, [ebp+EXTFS.ext2_save_block] |
243 | stdcall kernel_free, [ebp+EXTFS.ext2_save_block] |
| 242 | stdcall kernel_free, [ebp+EXTFS.ext2_temp_block] |
244 | stdcall kernel_free, [ebp+EXTFS.ext2_temp_block] |
| 243 | stdcall kernel_free, [ebp+EXTFS.ext2_save_inode] |
245 | stdcall kernel_free, [ebp+EXTFS.ext2_save_inode] |
| 244 | stdcall kernel_free, [ebp+EXTFS.ext2_temp_inode] |
246 | stdcall kernel_free, [ebp+EXTFS.ext2_temp_inode] |
| 245 | stdcall kernel_free, [ebp+EXTFS.root_inode] |
247 | stdcall kernel_free, [ebp+EXTFS.root_inode] |
| 246 | 248 | ||
| 247 | xchg ebp, eax |
249 | xchg ebp, eax |
| 248 | call free |
250 | call free |
| 249 | 251 | ||
| 250 | pop ebp |
252 | pop ebp |
| 251 | ret |
253 | ret |
| 252 | endp |
254 | endp |
| 253 | 255 | ||
| 254 | ;--------------------------------------------------------------------- |
256 | ;--------------------------------------------------------------------- |
| 255 | ; Read disk folder. |
257 | ; Read disk folder. |
| 256 | ; Input: ebp = pointer to EXTFS structure. |
258 | ; Input: ebp = pointer to EXTFS structure. |
| 257 | ; esi + [esp + 4] = file name. |
259 | ; esi + [esp + 4] = file name. |
| 258 | ; ebx = pointer to parameters from sysfunc 70. |
260 | ; ebx = pointer to parameters from sysfunc 70. |
| 259 | ; Output: ebx = blocks read (or 0xFFFFFFFF, folder not found) |
261 | ; Output: ebx = blocks read (or 0xFFFFFFFF, folder not found) |
| 260 | ; eax = error code (0 implies no error) |
262 | ; eax = error code (0 implies no error) |
| 261 | ;--------------------------------------------------------------------- |
263 | ;--------------------------------------------------------------------- |
| 262 | ext2_ReadFolder: |
264 | ext2_ReadFolder: |
| 263 | ;DEBUGF 1, "Reading folder.\n" |
265 | ;DEBUGF 1, "Reading folder.\n" |
| 264 | call ext2_lock |
266 | call ext2_lock |
| 265 | cmp byte [esi], 0 |
267 | cmp byte [esi], 0 |
| 266 | jz .root_folder |
268 | jz .root_folder |
| 267 | 269 | ||
| 268 | push ebx |
270 | push ebx |
| 269 | stdcall ext2_inode_find, [esp + 4 + 4] ; Get inode. |
271 | stdcall ext2_inode_find, [esp + 4 + 4] ; Get inode. |
| 270 | pop ebx |
272 | pop ebx |
| 271 | 273 | ||
| 272 | mov esi, [ebp + EXTFS.ext2_save_inode] |
274 | mov esi, [ebp + EXTFS.ext2_save_inode] |
| 273 | test eax, eax |
275 | test eax, eax |
| 274 | jnz .error_ret |
276 | jnz .error_ret |
| 275 | 277 | ||
| 276 | ; If not a directory, then return with error. |
278 | ; If not a directory, then return with error. |
| 277 | test [esi + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR |
279 | test [esi + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR |
| 278 | jz .error_not_found |
280 | jz .error_not_found |
| 279 | jmp @F |
281 | jmp @F |
| 280 | 282 | ||
| 281 | .root_folder: |
283 | .root_folder: |
| 282 | mov esi, [ebp + EXTFS.root_inode] |
284 | mov esi, [ebp + EXTFS.root_inode] |
| 283 | test [esi + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR |
285 | test [esi + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR |
| 284 | jz .error_root |
286 | jz .error_root |
| 285 | 287 | ||
| 286 | ; Copy the inode. |
288 | ; Copy the inode. |
| 287 | mov edi, [ebp + EXTFS.ext2_save_inode] |
289 | mov edi, [ebp + EXTFS.ext2_save_inode] |
| 288 | mov ecx, [ebp + EXTFS.inode_size] |
290 | mov ecx, [ebp + EXTFS.inode_size] |
| 289 | shr ecx, 2 |
291 | shr ecx, 2 |
| 290 | 292 | ||
| 291 | push edi |
293 | push edi |
| 292 | rep movsd |
294 | rep movsd |
| 293 | pop esi |
295 | pop esi |
| 294 | 296 | ||
| 295 | @@: |
297 | @@: |
| 296 | cmp [esi + EXT2_INODE_STRUC.i_size], 0 ; Folder is empty. |
298 | cmp [esi + EXT2_INODE_STRUC.i_size], 0 ; Folder is empty. |
| 297 | je .error_empty_dir |
299 | je .error_empty_dir |
| 298 | 300 | ||
| 299 | mov edx, [ebx + 16] |
301 | mov edx, [ebx + 16] |
| 300 | push edx ; Result address [edi + 28]. |
302 | push edx ; Result address [edi + 28]. |
| 301 | push 0 ; End of the current block in folder [edi + 24] |
303 | push 0 ; End of the current block in folder [edi + 24] |
| 302 | push dword[ebx + 12] ; Blocks to read [edi + 20] |
304 | push dword[ebx + 12] ; Blocks to read [edi + 20] |
| 303 | push dword[ebx + 4] ; The first wanted file [edi + 16] |
305 | push dword[ebx + 4] ; The first wanted file [edi + 16] |
| 304 | push dword[ebx + 8] ; Flags [edi + 12] |
306 | push dword[ebx + 8] ; Flags [edi + 12] |
| 305 | push 0 ; Read files [edi + 8] |
307 | push 0 ; Read files [edi + 8] |
| 306 | push 0 ; Files in folder [edi + 4] |
308 | push 0 ; Files in folder [edi + 4] |
| 307 | push 0 ; Number of blocks read in dir (and current block index) [edi] |
309 | push 0 ; Number of blocks read in dir (and current block index) [edi] |
| 308 | 310 | ||
| 309 | ; Fill header with zeroes. |
311 | ; Fill header with zeroes. |
| 310 | mov edi, edx |
312 | mov edi, edx |
| 311 | mov ecx, 32/4 |
313 | mov ecx, 32/4 |
| 312 | rep stosd |
314 | rep stosd |
| 313 | 315 | ||
| 314 | mov edi, esp ; edi = pointer to local variables. |
316 | mov edi, esp ; edi = pointer to local variables. |
| 315 | add edx, 32 ; edx = mem to return. |
317 | add edx, 32 ; edx = mem to return. |
| 316 | 318 | ||
| 317 | xor ecx, ecx ; Get number of first block. |
319 | xor ecx, ecx ; Get number of first block. |
| 318 | call ext2_inode_get_block |
320 | call ext2_inode_get_block |
| 319 | test eax, eax |
321 | test eax, eax |
| 320 | jnz .error_get_block |
322 | jnz .error_get_block |
| 321 | 323 | ||
| 322 | mov eax, ecx |
324 | mov eax, ecx |
| 323 | mov ebx, [ebp + EXTFS.ext2_save_block] |
325 | mov ebx, [ebp + EXTFS.ext2_save_block] |
| 324 | call ext2_block_read ; Read the block. |
326 | call ext2_block_read ; Read the block. |
| 325 | test eax, eax |
327 | test eax, eax |
| 326 | jnz .error_get_block |
328 | jnz .error_get_block |
| 327 | 329 | ||
| 328 | mov eax, ebx ; esi: current directory record |
330 | mov eax, ebx ; esi: current directory record |
| 329 | add eax, [ebp + EXTFS.block_size] |
331 | add eax, [ebp + EXTFS.block_size] |
| 330 | 332 | ||
| 331 | mov [edi + 24], eax |
333 | mov [edi + 24], eax |
| 332 | 334 | ||
| 333 | mov ecx, [edi + 16] ; ecx = first wanted (flags ommited) |
335 | mov ecx, [edi + 16] ; ecx = first wanted (flags ommited) |
| 334 | 336 | ||
| 335 | .find_wanted_start: |
337 | .find_wanted_start: |
| 336 | jecxz .find_wanted_end |
338 | jecxz .find_wanted_end |
| 337 | 339 | ||
| 338 | .find_wanted_cycle: |
340 | .find_wanted_cycle: |
| 339 | cmp [ebx + EXT2_DIR_STRUC.inode], 0 ; Don't count unused inode in total files. |
341 | cmp [ebx + EXT2_DIR_STRUC.inode], 0 ; Don't count unused inode in total files. |
| 340 | jz @F |
342 | jz @F |
| 341 | 343 | ||
| 342 | inc dword [edi + 4] ; EXT2 files in folder. |
344 | inc dword [edi + 4] ; EXT2 files in folder. |
| 343 | dec ecx |
345 | dec ecx |
| 344 | @@: |
346 | @@: |
| 345 | movzx eax, [ebx + EXT2_DIR_STRUC.rec_len] |
347 | movzx eax, [ebx + EXT2_DIR_STRUC.rec_len] |
| 346 | 348 | ||
| 347 | cmp eax, 12 ; Minimum record length. |
349 | cmp eax, 12 ; Minimum record length. |
| 348 | jb .error_bad_len |
350 | jb .error_bad_len |
| 349 | test eax, 0x3 ; Record length must be divisible by four. |
351 | test eax, 0x3 ; Record length must be divisible by four. |
| 350 | jnz .error_bad_len |
352 | jnz .error_bad_len |
| 351 | 353 | ||
| 352 | sub [esi + EXT2_INODE_STRUC.i_size], eax ; Subtract "processed record" length directly from inode. |
354 | sub [esi + EXT2_INODE_STRUC.i_size], eax ; Subtract "processed record" length directly from inode. |
| 353 | add ebx, eax ; Go to next record. |
355 | add ebx, eax ; Go to next record. |
| 354 | cmp ebx, [edi + 24] ; If not reached the next block, continue. |
356 | cmp ebx, [edi + 24] ; If not reached the next block, continue. |
| 355 | jb .find_wanted_start |
357 | jb .find_wanted_start |
| 356 | 358 | ||
| 357 | push .find_wanted_start |
359 | push .find_wanted_start |
| 358 | .end_block: ; Get the next block. |
360 | .end_block: ; Get the next block. |
| 359 | cmp [esi + EXT2_INODE_STRUC.i_size], 0 |
361 | cmp [esi + EXT2_INODE_STRUC.i_size], 0 |
| 360 | jle .end_dir |
362 | jle .end_dir |
| 361 | 363 | ||
| 362 | inc dword [edi] ; Number of blocks read. |
364 | inc dword [edi] ; Number of blocks read. |
| 363 | 365 | ||
| 364 | ; Read the next block. |
366 | ; Read the next block. |
| 365 | push ecx |
367 | push ecx |
| 366 | mov ecx, [edi] |
368 | mov ecx, [edi] |
| 367 | call ext2_inode_get_block |
369 | call ext2_inode_get_block |
| 368 | test eax, eax |
370 | test eax, eax |
| 369 | jnz .error_get_block |
371 | jnz .error_get_block |
| 370 | 372 | ||
| 371 | mov eax, ecx |
373 | mov eax, ecx |
| 372 | mov ebx, [ebp + EXTFS.ext2_save_block] |
374 | mov ebx, [ebp + EXTFS.ext2_save_block] |
| 373 | call ext2_block_read |
375 | call ext2_block_read |
| 374 | test eax, eax |
376 | test eax, eax |
| 375 | jnz .error_get_block |
377 | jnz .error_get_block |
| 376 | pop ecx |
378 | pop ecx |
| 377 | 379 | ||
| 378 | mov eax, ebx |
380 | mov eax, ebx |
| 379 | add eax, [ebp + EXTFS.block_size] |
381 | add eax, [ebp + EXTFS.block_size] |
| 380 | mov [edi + 24], eax ; Update the end of the current block variable. |
382 | mov [edi + 24], eax ; Update the end of the current block variable. |
| 381 | ret |
383 | ret |
| 382 | 384 | ||
| 383 | .wanted_end: |
385 | .wanted_end: |
| 384 | loop .find_wanted_cycle ; Skip files till we reach wanted one. |
386 | loop .find_wanted_cycle ; Skip files till we reach wanted one. |
| 385 | 387 | ||
| 386 | ; First requisite file. |
388 | ; First requisite file. |
| 387 | .find_wanted_end: |
389 | .find_wanted_end: |
| 388 | mov ecx, [edi + 20] |
390 | mov ecx, [edi + 20] |
| 389 | .wanted_start: ; Look for first_wanted + count. |
391 | .wanted_start: ; Look for first_wanted + count. |
| 390 | jecxz .wanted_end |
392 | jecxz .wanted_end |
| 391 | 393 | ||
| 392 | cmp [ebx + EXT2_DIR_STRUC.inode], 0 ; if (inode == 0): not used; |
394 | cmp [ebx + EXT2_DIR_STRUC.inode], 0 ; if (inode == 0): not used; |
| 393 | jz .empty_rec |
395 | jz .empty_rec |
| 394 | 396 | ||
| 395 | ; Increment "files in dir" and "read files" count. |
397 | ; Increment "files in dir" and "read files" count. |
| 396 | inc dword [edi + 8] |
398 | inc dword [edi + 8] |
| 397 | inc dword [edi + 4] |
399 | inc dword [edi + 4] |
| 398 | 400 | ||
| 399 | push edi ecx |
401 | push edi ecx |
| 400 | mov edi, edx ; Zero out till the name field. |
402 | mov edi, edx ; Zero out till the name field. |
| 401 | xor eax, eax |
403 | xor eax, eax |
| 402 | mov ecx, 40 / 4 |
404 | mov ecx, 40 / 4 |
| 403 | rep stosd |
405 | rep stosd |
| 404 | pop ecx edi |
406 | pop ecx edi |
| 405 | 407 | ||
| 406 | push ebx edi edx |
408 | push ebx edi edx |
| 407 | mov eax, [ebx + EXT2_DIR_STRUC.inode] ; Get the child inode. |
409 | mov eax, [ebx + EXT2_DIR_STRUC.inode] ; Get the child inode. |
| 408 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
410 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
| 409 | call ext2_inode_read |
411 | call ext2_inode_read |
| 410 | test eax, eax |
412 | test eax, eax |
| 411 | jnz .error_read_subinode |
413 | jnz .error_read_subinode |
| 412 | 414 | ||
| 413 | lea edi, [edx + 8] |
415 | lea edi, [edx + 8] |
| 414 | 416 | ||
| 415 | mov eax, [ebx + EXT2_INODE_STRUC.i_ctime] ; Convert time in NTFS format. |
417 | mov eax, [ebx + EXT2_INODE_STRUC.i_ctime] ; Convert time in NTFS format. |
| 416 | xor edx, edx |
418 | xor edx, edx |
| 417 | add eax, 3054539008 ; (369 * 365 + 89) * 24 * 3600 |
419 | add eax, 3054539008 ; (369 * 365 + 89) * 24 * 3600 |
| 418 | adc edx, 2 |
420 | adc edx, 2 |
| 419 | call ntfs_datetime_to_bdfe.sec |
421 | call ntfs_datetime_to_bdfe.sec |
| 420 | 422 | ||
| 421 | mov eax, [ebx + EXT2_INODE_STRUC.i_atime] |
423 | mov eax, [ebx + EXT2_INODE_STRUC.i_atime] |
| 422 | xor edx, edx |
424 | xor edx, edx |
| 423 | add eax, 3054539008 |
425 | add eax, 3054539008 |
| 424 | adc edx, 2 |
426 | adc edx, 2 |
| 425 | call ntfs_datetime_to_bdfe.sec |
427 | call ntfs_datetime_to_bdfe.sec |
| 426 | 428 | ||
| 427 | mov eax, [ebx + EXT2_INODE_STRUC.i_mtime] |
429 | mov eax, [ebx + EXT2_INODE_STRUC.i_mtime] |
| 428 | xor edx, edx |
430 | xor edx, edx |
| 429 | add eax, 3054539008 |
431 | add eax, 3054539008 |
| 430 | adc edx, 2 |
432 | adc edx, 2 |
| 431 | call ntfs_datetime_to_bdfe.sec |
433 | call ntfs_datetime_to_bdfe.sec |
| 432 | 434 | ||
| 433 | pop edx |
435 | pop edx |
| 434 | test [ebx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR ; If folder, don't report size. |
436 | test [ebx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR ; If folder, don't report size. |
| 435 | jnz @F |
437 | jnz @F |
| 436 | 438 | ||
| 437 | mov eax, [ebx + EXT2_INODE_STRUC.i_size] ; Low size |
439 | mov eax, [ebx + EXT2_INODE_STRUC.i_size] ; Low size |
| 438 | stosd |
440 | stosd |
| 439 | mov eax, [ebx + EXT2_INODE_STRUC.i_dir_acl] ; High size |
441 | mov eax, [ebx + EXT2_INODE_STRUC.i_dir_acl] ; High size |
| 440 | stosd |
442 | stosd |
| 441 | 443 | ||
| 442 | xor dword [edx], FS_FT_DIR ; Mark as file. |
444 | xor dword [edx], FS_FT_DIR ; Mark as file. |
| 443 | @@: |
445 | @@: |
| 444 | xor dword [edx], FS_FT_DIR ; Mark as directory. |
446 | xor dword [edx], FS_FT_DIR ; Mark as directory. |
| 445 | 447 | ||
| 446 | ; Copy name after converting from UTF-8 to CP866. |
448 | ; Copy name after converting from UTF-8 to CP866. |
| 447 | push ecx esi |
449 | push ecx esi |
| 448 | mov esi, [esp + 12] |
450 | mov esi, [esp + 12] |
| 449 | movzx ecx, [esi + EXT2_DIR_STRUC.name_len] |
451 | movzx ecx, [esi + EXT2_DIR_STRUC.name_len] |
| 450 | lea edi, [edx + 40] |
452 | lea edi, [edx + 40] |
| 451 | lea esi, [esi + EXT2_DIR_STRUC.name] |
453 | lea esi, [esi + EXT2_DIR_STRUC.name] |
| 452 | call utf8_to_cp866 |
454 | call utf8_to_cp866 |
| 453 | and byte [edi], 0 |
455 | and byte [edi], 0 |
| 454 | pop esi ecx edi ebx |
456 | pop esi ecx edi ebx |
| 455 | 457 | ||
| 456 | cmp byte [edx + 40], '.' ; If it begins with ".", mark it as hidden. |
458 | cmp byte [edx + 40], '.' ; If it begins with ".", mark it as hidden. |
| 457 | jne @F |
459 | jne @F |
| 458 | or dword [edx], FS_FT_HIDDEN |
460 | or dword [edx], FS_FT_HIDDEN |
| 459 | 461 | ||
| 460 | @@: |
462 | @@: |
| 461 | add edx, 40 + 264 ; Go to next record. |
463 | add edx, 40 + 264 ; Go to next record. |
| 462 | dec ecx |
464 | dec ecx |
| 463 | .empty_rec: |
465 | .empty_rec: |
| 464 | movzx eax, [ebx + EXT2_DIR_STRUC.rec_len] |
466 | movzx eax, [ebx + EXT2_DIR_STRUC.rec_len] |
| 465 | 467 | ||
| 466 | cmp eax, 12 ; Illegal length. |
468 | cmp eax, 12 ; Illegal length. |
| 467 | jb .error_bad_len |
469 | jb .error_bad_len |
| 468 | test eax, 0x3 ; Not a multiple of four. |
470 | test eax, 0x3 ; Not a multiple of four. |
| 469 | jnz .error_bad_len |
471 | jnz .error_bad_len |
| 470 | 472 | ||
| 471 | sub [esi + EXT2_INODE_STRUC.i_size], eax ; Subtract directly from the inode. |
473 | sub [esi + EXT2_INODE_STRUC.i_size], eax ; Subtract directly from the inode. |
| 472 | add ebx, eax |
474 | add ebx, eax |
| 473 | cmp ebx, [edi + 24] ; Are we at the end of the block? |
475 | cmp ebx, [edi + 24] ; Are we at the end of the block? |
| 474 | jb .wanted_start |
476 | jb .wanted_start |
| 475 | 477 | ||
| 476 | push .wanted_start |
478 | push .wanted_start |
| 477 | jmp .end_block |
479 | jmp .end_block |
| 478 | 480 | ||
| 479 | .end_dir: ; End of the directory. |
481 | .end_dir: ; End of the directory. |
| 480 | call ext2_unlock |
482 | call ext2_unlock |
| 481 | mov edx, [edi + 28] ; Address of where to return data. |
483 | mov edx, [edi + 28] ; Address of where to return data. |
| 482 | mov ebx, [edi + 8] ; EXT2_read_in_folder |
484 | mov ebx, [edi + 8] ; EXT2_read_in_folder |
| 483 | mov ecx, [edi + 4] ; EXT2_files_in_folder |
485 | mov ecx, [edi + 4] ; EXT2_files_in_folder |
| 484 | mov dword [edx], 1 ; Version |
486 | mov dword [edx], 1 ; Version |
| 485 | mov [edx + 4], ebx |
487 | mov [edx + 4], ebx |
| 486 | mov [edx + 8], ecx |
488 | mov [edx + 8], ecx |
| 487 | 489 | ||
| 488 | lea esp, [edi + 32] |
490 | lea esp, [edi + 32] |
| 489 | 491 | ||
| 490 | xor eax, eax ; Reserved in current implementation. |
492 | xor eax, eax ; Reserved in current implementation. |
| 491 | lea edi, [edx + 12] |
493 | lea edi, [edx + 12] |
| 492 | mov ecx, 20 / 4 |
494 | mov ecx, 20 / 4 |
| 493 | rep stosd |
495 | rep stosd |
| 494 | 496 | ||
| 495 | ;DEBUGF 1, "Returning with: %x.\n", eax |
497 | ;DEBUGF 1, "Returning with: %x.\n", eax |
| 496 | ret |
498 | ret |
| 497 | 499 | ||
| 498 | .error_bad_len: |
500 | .error_bad_len: |
| 499 | mov eax, ERROR_FS_FAIL |
501 | mov eax, ERROR_FS_FAIL |
| 500 | 502 | ||
| 501 | .error_read_subinode: |
503 | .error_read_subinode: |
| 502 | .error_get_block: |
504 | .error_get_block: |
| 503 | ; Fix the stack. |
505 | ; Fix the stack. |
| 504 | lea esp, [edi + 32] |
506 | lea esp, [edi + 32] |
| 505 | 507 | ||
| 506 | .error_ret: |
508 | .error_ret: |
| 507 | or ebx, -1 |
509 | or ebx, -1 |
| 508 | push eax |
510 | push eax |
| 509 | call ext2_unlock |
511 | call ext2_unlock |
| 510 | pop eax |
512 | pop eax |
| 511 | ;DEBUGF 1, "Returning with: %x.\n", eax |
513 | ;DEBUGF 1, "Returning with: %x.\n", eax |
| 512 | ret |
514 | ret |
| 513 | 515 | ||
| 514 | .error_empty_dir: ; inode of folder without blocks. |
516 | .error_empty_dir: ; inode of folder without blocks. |
| 515 | .error_root: ; Root has to be a folder. |
517 | .error_root: ; Root has to be a folder. |
| 516 | mov eax, ERROR_FS_FAIL |
518 | mov eax, ERROR_FS_FAIL |
| 517 | jmp .error_ret |
519 | jmp .error_ret |
| 518 | 520 | ||
| 519 | .error_not_found: ; Directory not found. |
521 | .error_not_found: ; Directory not found. |
| 520 | mov eax, ERROR_FILE_NOT_FOUND |
522 | mov eax, ERROR_FILE_NOT_FOUND |
| 521 | jmp .error_ret |
523 | jmp .error_ret |
| 522 | 524 | ||
| 523 | ;--------------------------------------------------------------------- |
525 | ;--------------------------------------------------------------------- |
| 524 | ; Read file from the hard disk. |
526 | ; Read file from the hard disk. |
| 525 | ; Input: esi + [esp + 4] = points to file name. |
527 | ; Input: esi + [esp + 4] = points to file name. |
| 526 | ; ebx = pointer to paramteres from sysfunc 70. |
528 | ; ebx = pointer to paramteres from sysfunc 70. |
| 527 | ; ebp = pointer to EXTFS structure. |
529 | ; ebp = pointer to EXTFS structure. |
| 528 | ; Output: ebx = bytes read (0xFFFFFFFF -> file not found) |
530 | ; Output: ebx = bytes read (0xFFFFFFFF -> file not found) |
| 529 | ; eax = error code (0 implies no error) |
531 | ; eax = error code (0 implies no error) |
| 530 | ;--------------------------------------------------------------------- |
532 | ;--------------------------------------------------------------------- |
| 531 | ext2_Read: |
533 | ext2_Read: |
| 532 | ;DEBUGF 1, "Attempting read.\n" |
534 | ;DEBUGF 1, "Attempting read.\n" |
| 533 | call ext2_lock |
535 | call ext2_lock |
| 534 | cmp byte [esi], 0 |
536 | cmp byte [esi], 0 |
| 535 | jnz @F |
537 | jnz @F |
| 536 | 538 | ||
| 537 | .this_is_nofile: |
539 | .this_is_nofile: |
| 538 | call ext2_unlock |
540 | call ext2_unlock |
| 539 | or ebx, -1 |
541 | or ebx, -1 |
| 540 | mov eax, ERROR_ACCESS_DENIED |
542 | mov eax, ERROR_ACCESS_DENIED |
| 541 | ret |
543 | ret |
| 542 | 544 | ||
| 543 | @@: |
545 | @@: |
| 544 | push ebx |
546 | push ebx |
| 545 | stdcall ext2_inode_find, [esp + 4 + 4] |
547 | stdcall ext2_inode_find, [esp + 4 + 4] |
| 546 | pop ebx |
548 | pop ebx |
| 547 | 549 | ||
| 548 | mov esi, [ebp + EXTFS.ext2_save_inode] |
550 | mov esi, [ebp + EXTFS.ext2_save_inode] |
| 549 | test eax, eax |
551 | test eax, eax |
| 550 | jz @F |
552 | jz @F |
| 551 | 553 | ||
| 552 | call ext2_unlock |
554 | call ext2_unlock |
| 553 | or ebx, -1 |
555 | or ebx, -1 |
| 554 | mov eax, ERROR_FILE_NOT_FOUND |
556 | mov eax, ERROR_FILE_NOT_FOUND |
| 555 | ret |
557 | ret |
| 556 | 558 | ||
| 557 | @@: |
559 | @@: |
| 558 | mov ax, [esi + EXT2_INODE_STRUC.i_mode] |
560 | mov ax, [esi + EXT2_INODE_STRUC.i_mode] |
| 559 | and ax, EXT2_S_IFMT ; Leave the file format in AX. |
561 | and ax, EXT2_S_IFMT ; Leave the file format in AX. |
| 560 | 562 | ||
| 561 | ; Check if file. |
563 | ; Check if file. |
| 562 | cmp ax, EXT2_S_IFREG |
564 | cmp ax, EXT2_S_IFREG |
| 563 | jne .this_is_nofile |
565 | jne .this_is_nofile |
| 564 | 566 | ||
| 565 | mov edi, [ebx + 16] |
567 | mov edi, [ebx + 16] |
| 566 | mov ecx, [ebx + 12] |
568 | mov ecx, [ebx + 12] |
| 567 | 569 | ||
| 568 | mov eax, [ebx + 4] |
570 | mov eax, [ebx + 4] |
| 569 | mov edx, [ebx + 8] ; edx:eax = start byte number. |
571 | mov edx, [ebx + 8] ; edx:eax = start byte number. |
| 570 | 572 | ||
| 571 | ; Check if file is big enough for us. |
573 | ; Check if file is big enough for us. |
| 572 | cmp [esi + EXT2_INODE_STRUC.i_dir_acl], edx |
574 | cmp [esi + EXT2_INODE_STRUC.i_dir_acl], edx |
| 573 | ja .size_greater |
575 | ja .size_greater |
| 574 | jb .size_less |
576 | jb .size_less |
| 575 | 577 | ||
| 576 | cmp [esi + EXT2_INODE_STRUC.i_size], eax |
578 | cmp [esi + EXT2_INODE_STRUC.i_size], eax |
| 577 | ja .size_greater |
579 | ja .size_greater |
| 578 | 580 | ||
| 579 | .size_less: |
581 | .size_less: |
| 580 | call ext2_unlock |
582 | call ext2_unlock |
| 581 | xor ebx, ebx |
583 | xor ebx, ebx |
| 582 | mov eax, ERROR_END_OF_FILE |
584 | mov eax, ERROR_END_OF_FILE |
| 583 | ret |
585 | ret |
| 584 | 586 | ||
| 585 | @@: |
587 | @@: |
| 586 | .size_greater: |
588 | .size_greater: |
| 587 | add eax, ecx ; Get last byte. |
589 | add eax, ecx ; Get last byte. |
| 588 | adc edx, 0 |
590 | adc edx, 0 |
| 589 | 591 | ||
| 590 | ; Check if we've to read whole file, or till requested. |
592 | ; Check if we've to read whole file, or till requested. |
| 591 | cmp [esi + EXT2_INODE_STRUC.i_dir_acl], edx |
593 | cmp [esi + EXT2_INODE_STRUC.i_dir_acl], edx |
| 592 | ja .read_till_requested |
594 | ja .read_till_requested |
| 593 | jb .read_whole_file |
595 | jb .read_whole_file |
| 594 | cmp [esi + EXT2_INODE_STRUC.i_size], eax |
596 | cmp [esi + EXT2_INODE_STRUC.i_size], eax |
| 595 | jae .read_till_requested |
597 | jae .read_till_requested |
| 596 | 598 | ||
| 597 | .read_whole_file: |
599 | .read_whole_file: |
| 598 | push 1 ; Read till the end of file. |
600 | push 1 ; Read till the end of file. |
| 599 | mov ecx, [esi + EXT2_INODE_STRUC.i_size] |
601 | mov ecx, [esi + EXT2_INODE_STRUC.i_size] |
| 600 | sub ecx, [ebx + 4] ; To read = (size - starting byte) |
602 | sub ecx, [ebx + 4] ; To read = (size - starting byte) |
| 601 | jmp @F |
603 | jmp @F |
| 602 | 604 | ||
| 603 | .read_till_requested: |
605 | .read_till_requested: |
| 604 | push 0 ; Read as much as requested. |
606 | push 0 ; Read as much as requested. |
| 605 | 607 | ||
| 606 | @@: |
608 | @@: |
| 607 | ; ecx = bytes to read. |
609 | ; ecx = bytes to read. |
| 608 | ; edi = return memory |
610 | ; edi = return memory |
| 609 | ; [esi] = starting byte. |
611 | ; [esi] = starting byte. |
| 610 | 612 | ||
| 611 | push ecx ; Number of bytes to read. |
613 | push ecx ; Number of bytes to read. |
| 612 | 614 | ||
| 613 | ; Get part of the first block. |
615 | ; Get part of the first block. |
| 614 | mov edx, [ebx + 8] |
616 | mov edx, [ebx + 8] |
| 615 | mov eax, [ebx + 4] |
617 | mov eax, [ebx + 4] |
| 616 | div [ebp + EXTFS.block_size] |
618 | div [ebp + EXTFS.block_size] |
| 617 | 619 | ||
| 618 | push eax ; Save block counter to stack. |
620 | push eax ; Save block counter to stack. |
| 619 | 621 | ||
| 620 | push ecx |
622 | push ecx |
| 621 | mov ecx, eax |
623 | mov ecx, eax |
| 622 | call ext2_inode_get_block |
624 | call ext2_inode_get_block |
| 623 | test eax, eax |
625 | test eax, eax |
| 624 | jnz .error_at_first_block |
626 | jnz .error_at_first_block |
| 625 | 627 | ||
| 626 | mov ebx, [ebp + EXTFS.ext2_save_block] |
628 | mov ebx, [ebp + EXTFS.ext2_save_block] |
| 627 | mov eax, ecx |
629 | mov eax, ecx |
| 628 | call ext2_block_read |
630 | call ext2_block_read |
| 629 | test eax, eax |
631 | test eax, eax |
| 630 | jnz .error_at_first_block |
632 | jnz .error_at_first_block |
| 631 | 633 | ||
| 632 | pop ecx |
634 | pop ecx |
| 633 | ; Get index inside block. |
635 | ; Get index inside block. |
| 634 | add ebx, edx |
636 | add ebx, edx |
| 635 | 637 | ||
| 636 | neg edx |
638 | neg edx |
| 637 | add edx, [ebp + EXTFS.block_size] ; Get number of bytes in this block. |
639 | add edx, [ebp + EXTFS.block_size] ; Get number of bytes in this block. |
| 638 | 640 | ||
| 639 | ; If it's smaller than total bytes to read, then only one block. |
641 | ; If it's smaller than total bytes to read, then only one block. |
| 640 | cmp ecx, edx |
642 | cmp ecx, edx |
| 641 | jbe .only_one_block |
643 | jbe .only_one_block |
| 642 | 644 | ||
| 643 | mov eax, ecx |
645 | mov eax, ecx |
| 644 | sub eax, edx |
646 | sub eax, edx |
| 645 | mov ecx, edx |
647 | mov ecx, edx |
| 646 | 648 | ||
| 647 | push esi |
649 | push esi |
| 648 | mov esi, ebx |
650 | mov esi, ebx |
| 649 | rep movsb ; Copy part of 1st block. |
651 | rep movsb ; Copy part of 1st block. |
| 650 | pop esi |
652 | pop esi |
| 651 | 653 | ||
| 652 | ; eax -> bytes to read. |
654 | ; eax -> bytes to read. |
| 653 | .calc_blocks_count: |
655 | .calc_blocks_count: |
| 654 | mov ebx, edi ; Read the block in ebx. |
656 | mov ebx, edi ; Read the block in ebx. |
| 655 | xor edx, edx |
657 | xor edx, edx |
| 656 | div [ebp + EXTFS.block_size] ; Get number of bytes in last block in edx. |
658 | div [ebp + EXTFS.block_size] ; Get number of bytes in last block in edx. |
| 657 | mov edi, eax ; Get number of blocks in edi. |
659 | mov edi, eax ; Get number of blocks in edi. |
| 658 | 660 | ||
| 659 | @@: |
661 | @@: |
| 660 | ; Test if all blocks are done. |
662 | ; Test if all blocks are done. |
| 661 | test edi, edi |
663 | test edi, edi |
| 662 | jz .finish_block |
664 | jz .finish_block |
| 663 | 665 | ||
| 664 | inc dword [esp] |
666 | inc dword [esp] |
| 665 | mov ecx, [esp] |
667 | mov ecx, [esp] |
| 666 | call ext2_inode_get_block |
668 | call ext2_inode_get_block |
| 667 | 669 | ||
| 668 | test eax, eax |
670 | test eax, eax |
| 669 | jnz .error_at_read_cycle |
671 | jnz .error_at_read_cycle |
| 670 | 672 | ||
| 671 | mov eax, ecx ; ebx already contains desired values. |
673 | mov eax, ecx ; ebx already contains desired values. |
| 672 | call ext2_block_read |
674 | call ext2_block_read |
| 673 | 675 | ||
| 674 | test eax, eax |
676 | test eax, eax |
| 675 | jnz .error_at_read_cycle |
677 | jnz .error_at_read_cycle |
| 676 | 678 | ||
| 677 | add ebx, [ebp + EXTFS.block_size] |
679 | add ebx, [ebp + EXTFS.block_size] |
| 678 | 680 | ||
| 679 | dec edi |
681 | dec edi |
| 680 | jmp @B |
682 | jmp @B |
| 681 | 683 | ||
| 682 | ; In edx -- number of bytes in the last block. |
684 | ; In edx -- number of bytes in the last block. |
| 683 | .finish_block: |
685 | .finish_block: |
| 684 | test edx, edx |
686 | test edx, edx |
| 685 | jz .end_read |
687 | jz .end_read |
| 686 | 688 | ||
| 687 | pop ecx ; Pop block counter in ECX. |
689 | pop ecx ; Pop block counter in ECX. |
| 688 | inc ecx |
690 | inc ecx |
| 689 | call ext2_inode_get_block |
691 | call ext2_inode_get_block |
| 690 | 692 | ||
| 691 | test eax, eax |
693 | test eax, eax |
| 692 | jnz .error_at_finish_block |
694 | jnz .error_at_finish_block |
| 693 | 695 | ||
| 694 | mov edi, ebx |
696 | mov edi, ebx |
| 695 | mov eax, ecx |
697 | mov eax, ecx |
| 696 | mov ebx, [ebp + EXTFS.ext2_save_block] |
698 | mov ebx, [ebp + EXTFS.ext2_save_block] |
| 697 | call ext2_block_read |
699 | call ext2_block_read |
| 698 | 700 | ||
| 699 | test eax, eax |
701 | test eax, eax |
| 700 | jnz .error_at_finish_block |
702 | jnz .error_at_finish_block |
| 701 | 703 | ||
| 702 | mov ecx, edx |
704 | mov ecx, edx |
| 703 | mov esi, ebx |
705 | mov esi, ebx |
| 704 | rep movsb ; Copy last piece of block. |
706 | rep movsb ; Copy last piece of block. |
| 705 | jmp @F |
707 | jmp @F |
| 706 | 708 | ||
| 707 | .end_read: |
709 | .end_read: |
| 708 | pop ecx ; Pop block counter in ECX. |
710 | pop ecx ; Pop block counter in ECX. |
| 709 | @@: |
711 | @@: |
| 710 | pop ebx ; Number of bytes read. |
712 | pop ebx ; Number of bytes read. |
| 711 | call ext2_unlock |
713 | call ext2_unlock |
| 712 | pop eax ; If we were asked to read more, say EOF. |
714 | pop eax ; If we were asked to read more, say EOF. |
| 713 | test eax, eax |
715 | test eax, eax |
| 714 | jz @F |
716 | jz @F |
| 715 | 717 | ||
| 716 | mov eax, ERROR_END_OF_FILE |
718 | mov eax, ERROR_END_OF_FILE |
| 717 | ret |
719 | ret |
| 718 | @@: |
720 | @@: |
| 719 | xor eax, eax |
721 | xor eax, eax |
| 720 | ;DEBUGF 1, "Returning with: %x.\n", eax |
722 | ;DEBUGF 1, "Returning with: %x.\n", eax |
| 721 | ret |
723 | ret |
| 722 | 724 | ||
| 723 | .only_one_block: |
725 | .only_one_block: |
| 724 | mov esi, ebx |
726 | mov esi, ebx |
| 725 | rep movsb ; Copy last piece of block. |
727 | rep movsb ; Copy last piece of block. |
| 726 | jmp .end_read |
728 | jmp .end_read |
| 727 | 729 | ||
| 728 | .error_at_first_block: |
730 | .error_at_first_block: |
| 729 | pop edx |
731 | pop edx |
| 730 | .error_at_read_cycle: |
732 | .error_at_read_cycle: |
| 731 | pop ebx |
733 | pop ebx |
| 732 | .error_at_finish_block: |
734 | .error_at_finish_block: |
| 733 | pop ecx edx |
735 | pop ecx edx |
| 734 | or ebx, -1 |
736 | or ebx, -1 |
| 735 | push eax |
737 | push eax |
| 736 | call ext2_unlock |
738 | call ext2_unlock |
| 737 | pop eax |
739 | pop eax |
| 738 | 740 | ||
| 739 | ;DEBUGF 1, "Returning with: %x.\n", eax |
741 | ;DEBUGF 1, "Returning with: %x.\n", eax |
| 740 | ret |
742 | ret |
| 741 | 743 | ||
| 742 | ;--------------------------------------------------------------------- |
744 | ;--------------------------------------------------------------------- |
| 743 | ; Read file information from block device. |
745 | ; Read file information from block device. |
| 744 | ; Input: esi + [esp + 4] = file name. |
746 | ; Input: esi + [esp + 4] = file name. |
| 745 | ; ebx = pointer to paramteres from sysfunc 70. |
747 | ; ebx = pointer to paramteres from sysfunc 70. |
| 746 | ; ebp = pointer to EXTFS structure. |
748 | ; ebp = pointer to EXTFS structure. |
| 747 | ; Output: eax = error code. |
749 | ; Output: eax = error code. |
| 748 | ;--------------------------------------------------------------------- |
750 | ;--------------------------------------------------------------------- |
| 749 | ext2_GetFileInfo: |
751 | ext2_GetFileInfo: |
| 750 | ;DEBUGF 1, "Calling for file info, for: %s.\n", esi |
752 | ;DEBUGF 1, "Calling for file info, for: %s.\n", esi |
| 751 | call ext2_lock |
753 | call ext2_lock |
| 752 | mov edx, [ebx + 16] |
754 | mov edx, [ebx + 16] |
| 753 | cmp byte [esi], 0 |
755 | cmp byte [esi], 0 |
| 754 | jz .is_root |
756 | jz .is_root |
| 755 | 757 | ||
| 756 | push edx |
758 | push edx |
| 757 | stdcall ext2_inode_find, [esp + 4 + 4] |
759 | stdcall ext2_inode_find, [esp + 4 + 4] |
| 758 | mov ebx, edx |
760 | mov ebx, edx |
| 759 | pop edx |
761 | pop edx |
| 760 | 762 | ||
| 761 | mov esi, [ebp + EXTFS.ext2_save_inode] |
763 | mov esi, [ebp + EXTFS.ext2_save_inode] |
| 762 | test eax, eax |
764 | test eax, eax |
| 763 | jz @F |
765 | jz @F |
| 764 | 766 | ||
| 765 | push eax |
767 | push eax |
| 766 | call ext2_unlock |
768 | call ext2_unlock |
| 767 | pop eax |
769 | pop eax |
| 768 | ;DEBUGF 1, "Returning with: %x.\n", eax |
770 | ;DEBUGF 1, "Returning with: %x.\n", eax |
| 769 | ret |
771 | ret |
| 770 | 772 | ||
| 771 | .is_root: |
773 | .is_root: |
| 772 | xor ebx, ebx ; Clear out first char, since we don't want to set hidden flag on root. |
774 | xor ebx, ebx ; Clear out first char, since we don't want to set hidden flag on root. |
| 773 | mov esi, [ebp + EXTFS.root_inode] |
775 | mov esi, [ebp + EXTFS.root_inode] |
| 774 | 776 | ||
| 775 | @@: |
777 | @@: |
| 776 | xor eax, eax |
778 | xor eax, eax |
| 777 | mov edi, edx |
779 | mov edi, edx |
| 778 | mov ecx, 40/4 |
780 | mov ecx, 40/4 |
| 779 | rep stosd ; Zero fill buffer. |
781 | rep stosd ; Zero fill buffer. |
| 780 | 782 | ||
| 781 | cmp bl, '.' |
783 | cmp bl, '.' |
| 782 | jne @F |
784 | jne @F |
| 783 | or dword [edx], FS_FT_HIDDEN |
785 | or dword [edx], FS_FT_HIDDEN |
| 784 | 786 | ||
| 785 | @@: |
787 | @@: |
| 786 | test [esi + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR |
788 | test [esi + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR |
| 787 | jnz @F ; If a directory, don't put in file size. |
789 | jnz @F ; If a directory, don't put in file size. |
| 788 | 790 | ||
| 789 | mov eax, [esi + EXT2_INODE_STRUC.i_size] ; Low file size. |
791 | mov eax, [esi + EXT2_INODE_STRUC.i_size] ; Low file size. |
| 790 | mov ebx, [esi + EXT2_INODE_STRUC.i_dir_acl] ; High file size. |
792 | mov ebx, [esi + EXT2_INODE_STRUC.i_dir_acl] ; High file size. |
| 791 | mov dword [edx+32], eax |
793 | mov dword [edx+32], eax |
| 792 | mov dword [edx+36], ebx |
794 | mov dword [edx+36], ebx |
| 793 | 795 | ||
| 794 | xor dword [edx], FS_FT_DIR ; Next XOR will clean this, to mark it as a file. |
796 | xor dword [edx], FS_FT_DIR ; Next XOR will clean this, to mark it as a file. |
| 795 | @@: |
797 | @@: |
| 796 | xor dword [edx], FS_FT_DIR ; Mark as directory. |
798 | xor dword [edx], FS_FT_DIR ; Mark as directory. |
| 797 | 799 | ||
| 798 | lea edi, [edx + 8] |
800 | lea edi, [edx + 8] |
| 799 | 801 | ||
| 800 | ; Store all time. |
802 | ; Store all time. |
| 801 | mov eax, [esi + EXT2_INODE_STRUC.i_ctime] |
803 | mov eax, [esi + EXT2_INODE_STRUC.i_ctime] |
| 802 | xor edx, edx |
804 | xor edx, edx |
| 803 | add eax, 3054539008 |
805 | add eax, 3054539008 |
| 804 | adc edx, 2 |
806 | adc edx, 2 |
| 805 | call ntfs_datetime_to_bdfe.sec |
807 | call ntfs_datetime_to_bdfe.sec |
| 806 | 808 | ||
| 807 | mov eax, [esi + EXT2_INODE_STRUC.i_atime] |
809 | mov eax, [esi + EXT2_INODE_STRUC.i_atime] |
| 808 | xor edx, edx |
810 | xor edx, edx |
| 809 | add eax, 3054539008 |
811 | add eax, 3054539008 |
| 810 | adc edx, 2 |
812 | adc edx, 2 |
| 811 | call ntfs_datetime_to_bdfe.sec |
813 | call ntfs_datetime_to_bdfe.sec |
| 812 | 814 | ||
| 813 | mov eax, [esi + EXT2_INODE_STRUC.i_mtime] |
815 | mov eax, [esi + EXT2_INODE_STRUC.i_mtime] |
| 814 | xor edx, edx |
816 | xor edx, edx |
| 815 | add eax, 3054539008 |
817 | add eax, 3054539008 |
| 816 | adc edx, 2 |
818 | adc edx, 2 |
| 817 | call ntfs_datetime_to_bdfe.sec |
819 | call ntfs_datetime_to_bdfe.sec |
| 818 | 820 | ||
| 819 | call ext2_unlock |
821 | call ext2_unlock |
| 820 | xor eax, eax |
822 | xor eax, eax |
| 821 | ;DEBUGF 1, "Returning with: %x.\n", eax |
823 | ;DEBUGF 1, "Returning with: %x.\n", eax |
| 822 | ret |
824 | ret |
| 823 | 825 | ||
| 824 | ;--------------------------------------------------------------------- |
826 | ;--------------------------------------------------------------------- |
| 825 | ; Set file information for block device. |
827 | ; Set file information for block device. |
| 826 | ; Input: esi + [esp + 4] = file name. |
828 | ; Input: esi + [esp + 4] = file name. |
| 827 | ; ebx = pointer to paramteres from sysfunc 70. |
829 | ; ebx = pointer to paramteres from sysfunc 70. |
| 828 | ; ebp = pointer to EXTFS structure. |
830 | ; ebp = pointer to EXTFS structure. |
| 829 | ; Output: eax = error code. |
831 | ; Output: eax = error code. |
| 830 | ;--------------------------------------------------------------------- |
832 | ;--------------------------------------------------------------------- |
| 831 | ext2_SetFileInfo: |
833 | ext2_SetFileInfo: |
| 832 | test [ebp + EXTFS.partition_flags], EXT2_RO |
834 | test [ebp + EXTFS.partition_flags], EXT2_RO |
| 833 | jz @F |
835 | jz @F |
| 834 | 836 | ||
| 835 | mov eax, ERROR_UNSUPPORTED_FS |
837 | mov eax, ERROR_UNSUPPORTED_FS |
| 836 | ret |
838 | ret |
| 837 | 839 | ||
| 838 | @@: |
840 | @@: |
| 839 | push edx esi edi ebx |
841 | push edx esi edi ebx |
| 840 | call ext2_lock |
842 | call ext2_lock |
| 841 | mov edx, [ebx + 16] |
843 | mov edx, [ebx + 16] |
| 842 | 844 | ||
| 843 | ; Is this read-only? |
845 | ; Is this read-only? |
| 844 | test [ebp + EXTFS.partition_flags], EXT2_RO |
846 | test [ebp + EXTFS.partition_flags], EXT2_RO |
| 845 | jnz .fail |
847 | jnz .fail |
| 846 | 848 | ||
| 847 | ; Not supported for root. |
849 | ; Not supported for root. |
| 848 | cmp byte [esi], 0 |
850 | cmp byte [esi], 0 |
| 849 | je .fail |
851 | je .fail |
| 850 | 852 | ||
| 851 | .get_inode: |
853 | .get_inode: |
| 852 | push edx |
854 | push edx |
| 853 | stdcall ext2_inode_find, [esp + 4 + 20] |
855 | stdcall ext2_inode_find, [esp + 4 + 20] |
| 854 | pop edx |
856 | pop edx |
| 855 | 857 | ||
| 856 | test eax, eax |
858 | test eax, eax |
| 857 | jnz @F |
859 | jnz @F |
| 858 | 860 | ||
| 859 | ; Save inode number. |
861 | ; Save inode number. |
| 860 | push esi |
862 | push esi |
| 861 | mov esi, [ebp + EXTFS.ext2_save_inode] |
863 | mov esi, [ebp + EXTFS.ext2_save_inode] |
| 862 | 864 | ||
| 863 | ; From the BDFE, we ignore read-only file flags, hidden file flags; |
865 | ; From the BDFE, we ignore read-only file flags, hidden file flags; |
| 864 | ; We ignore system file flags, file was archived or not. |
866 | ; We ignore system file flags, file was archived or not. |
| 865 | 867 | ||
| 866 | ; Also ignored is file creation time. ext2 stores "inode modification" |
868 | ; Also ignored is file creation time. ext2 stores "inode modification" |
| 867 | ; time in the ctime field, which is updated by the respective inode_write |
869 | ; time in the ctime field, which is updated by the respective inode_write |
| 868 | ; procedure, and any writes on it would be overwritten anyway. |
870 | ; procedure, and any writes on it would be overwritten anyway. |
| 869 | 871 | ||
| 870 | ; Access time. |
872 | ; Access time. |
| 871 | lea edi, [esi + EXT2_INODE_STRUC.i_atime] |
873 | lea edi, [esi + EXT2_INODE_STRUC.i_atime] |
| 872 | lea esi, [edx + 16] |
874 | lea esi, [edx + 16] |
| 873 | call bdfe_to_unix_time |
875 | call bdfe_to_unix_time |
| 874 | 876 | ||
| 875 | ; Modification time. |
877 | ; Modification time. |
| 876 | add esi, 8 |
878 | add esi, 8 |
| 877 | add edi, 8 |
879 | add edi, 8 |
| 878 | call bdfe_to_unix_time |
880 | call bdfe_to_unix_time |
| 879 | 881 | ||
| 880 | mov ebx, [ebp + EXTFS.ext2_save_inode] ; Get address of inode into ebx. |
882 | mov ebx, [ebp + EXTFS.ext2_save_inode] ; Get address of inode into ebx. |
| 881 | pop eax ; Get inode number in eax. |
883 | pop eax ; Get inode number in eax. |
| 882 | call ext2_inode_write ; eax contains error code, if any. |
884 | call ext2_inode_write ; eax contains error code, if any. |
| 883 | test eax, eax |
885 | test eax, eax |
| 884 | jnz @F |
886 | jnz @F |
| 885 | 887 | ||
| 886 | call ext2_sb_update |
888 | call ext2_sb_update |
| 887 | ; Sync the disk. |
889 | ; Sync the disk. |
| 888 | mov esi, [ebp + PARTITION.Disk] |
890 | mov esi, [ebp + PARTITION.Disk] |
| 889 | call disk_sync ; eax contains error code, if any. |
891 | call disk_sync ; eax contains error code, if any. |
| 890 | 892 | ||
| 891 | @@: |
893 | @@: |
| 892 | push eax |
894 | push eax |
| 893 | call ext2_unlock |
895 | call ext2_unlock |
| 894 | pop eax |
896 | pop eax |
| 895 | 897 | ||
| 896 | pop ebx edi esi edx |
898 | pop ebx edi esi edx |
| 897 | ret |
899 | ret |
| 898 | 900 | ||
| 899 | .fail: |
901 | .fail: |
| 900 | call ext2_sb_update |
902 | call ext2_sb_update |
| 901 | ; Sync the disk. |
903 | ; Sync the disk. |
| 902 | mov esi, [ebp + PARTITION.Disk] |
904 | mov esi, [ebp + PARTITION.Disk] |
| 903 | call disk_sync ; eax contains error code, if any. |
905 | call disk_sync ; eax contains error code, if any. |
| 904 | 906 | ||
| 905 | mov eax, ERROR_UNSUPPORTED_FS |
907 | mov eax, ERROR_UNSUPPORTED_FS |
| 906 | jmp @B |
908 | jmp @B |
| 907 | 909 | ||
| 908 | ;--------------------------------------------------------------------- |
910 | ;--------------------------------------------------------------------- |
| 909 | ; Set file information for block device. |
911 | ; Set file information for block device. |
| 910 | ; Input: esi + [esp + 4] = file name. |
912 | ; Input: esi + [esp + 4] = file name. |
| 911 | ; ebx = pointer to paramteres from sysfunc 70. |
913 | ; ebx = pointer to paramteres from sysfunc 70. |
| 912 | ; ebp = pointer to EXTFS structure. |
914 | ; ebp = pointer to EXTFS structure. |
| 913 | ; Output: eax = error code. |
915 | ; Output: eax = error code. |
| 914 | ;--------------------------------------------------------------------- |
916 | ;--------------------------------------------------------------------- |
| 915 | ext2_Delete: |
917 | ext2_Delete: |
| 916 | ;DEBUGF 1, "Attempting Delete.\n" |
918 | ;DEBUGF 1, "Attempting Delete.\n" |
| 917 | test [ebp + EXTFS.partition_flags], EXT2_RO |
919 | test [ebp + EXTFS.partition_flags], EXT2_RO |
| 918 | jz @F |
920 | jz @F |
| 919 | 921 | ||
| 920 | mov eax, ERROR_UNSUPPORTED_FS |
922 | mov eax, ERROR_UNSUPPORTED_FS |
| 921 | ret |
923 | ret |
| 922 | 924 | ||
| 923 | @@: |
925 | @@: |
| 924 | push ebx ecx edx esi edi |
926 | push ebx ecx edx esi edi |
| 925 | call ext2_lock |
927 | call ext2_lock |
| 926 | 928 | ||
| 927 | add esi, [esp + 20 + 4] |
929 | add esi, [esp + 20 + 4] |
| 928 | 930 | ||
| 929 | ; Can't delete root. |
931 | ; Can't delete root. |
| 930 | cmp byte [esi], 0 |
932 | cmp byte [esi], 0 |
| 931 | jz .error_access_denied |
933 | jz .error_access_denied |
| 932 | 934 | ||
| 933 | push esi |
935 | push esi |
| 934 | stdcall ext2_inode_find, 0 |
936 | stdcall ext2_inode_find, 0 |
| 935 | mov ebx, esi |
937 | mov ebx, esi |
| 936 | pop esi |
938 | pop esi |
| 937 | 939 | ||
| 938 | test eax, eax |
940 | test eax, eax |
| 939 | jnz .error_access_denied |
941 | jnz .error_access_denied |
| 940 | 942 | ||
| 941 | mov edx, [ebp + EXTFS.ext2_save_inode] |
943 | mov edx, [ebp + EXTFS.ext2_save_inode] |
| 942 | movzx edx, [edx + EXT2_INODE_STRUC.i_mode] |
944 | movzx edx, [edx + EXT2_INODE_STRUC.i_mode] |
| 943 | and edx, EXT2_S_IFMT ; Get the mask. |
945 | and edx, EXT2_S_IFMT ; Get the mask. |
| 944 | cmp edx, EXT2_S_IFDIR |
946 | cmp edx, EXT2_S_IFDIR |
| 945 | jne @F ; If not a directory, we don't need to check if it's empty. |
947 | jne @F ; If not a directory, we don't need to check if it's empty. |
| 946 | 948 | ||
| 947 | call ext2_dir_empty ; 0 means directory is empty. |
949 | call ext2_dir_empty ; 0 means directory is empty. |
| 948 | 950 | ||
| 949 | test eax, eax |
951 | test eax, eax |
| 950 | jnz .error_access_denied |
952 | jnz .error_access_denied |
| 951 | 953 | ||
| 952 | @@: |
954 | @@: |
| 953 | ; Find parent. |
955 | ; Find parent. |
| 954 | call ext2_inode_find_parent |
956 | call ext2_inode_find_parent |
| 955 | test eax, eax |
957 | test eax, eax |
| 956 | jnz .error_access_denied |
958 | jnz .error_access_denied |
| 957 | mov eax, esi |
959 | mov eax, esi |
| 958 | 960 | ||
| 959 | ; Save file/dir & parent inode. |
961 | ; Save file/dir & parent inode. |
| 960 | push ebx eax |
962 | push ebx eax |
| 961 | 963 | ||
| 962 | cmp edx, EXT2_S_IFDIR |
964 | cmp edx, EXT2_S_IFDIR |
| 963 | jne @F |
965 | jne @F |
| 964 | 966 | ||
| 965 | ; Unlink '.' |
967 | ; Unlink '.' |
| 966 | mov eax, [esp + 4] |
968 | mov eax, [esp + 4] |
| 967 | call ext2_inode_unlink |
969 | call ext2_inode_unlink |
| 968 | cmp eax, 0xFFFFFFFF |
970 | cmp eax, 0xFFFFFFFF |
| 969 | je .error_stack8 |
971 | je .error_stack8 |
| 970 | 972 | ||
| 971 | ; Unlink '..' |
973 | ; Unlink '..' |
| 972 | mov eax, [esp + 4] |
974 | mov eax, [esp + 4] |
| 973 | mov ebx, [esp] |
975 | mov ebx, [esp] |
| 974 | call ext2_inode_unlink |
976 | call ext2_inode_unlink |
| 975 | cmp eax, 0xFFFFFFFF |
977 | cmp eax, 0xFFFFFFFF |
| 976 | je .error_stack8 |
978 | je .error_stack8 |
| 977 | 979 | ||
| 978 | @@: |
980 | @@: |
| 979 | pop eax |
981 | pop eax |
| 980 | mov ebx, [esp] |
982 | mov ebx, [esp] |
| 981 | ; Unlink the inode. |
983 | ; Unlink the inode. |
| 982 | call ext2_inode_unlink |
984 | call ext2_inode_unlink |
| 983 | cmp eax, 0xFFFFFFFF |
985 | cmp eax, 0xFFFFFFFF |
| 984 | je .error_stack4 |
986 | je .error_stack4 |
| 985 | 987 | ||
| 986 | ; If hardlinks aren't zero, shouldn't completely free. |
988 | ; If hardlinks aren't zero, shouldn't completely free. |
| 987 | test eax, eax |
989 | test eax, eax |
| 988 | jz @F |
990 | jz @F |
| 989 | 991 | ||
| 990 | add esp, 4 |
992 | add esp, 4 |
| 991 | jmp .disk_sync |
993 | jmp .disk_sync |
| 992 | 994 | ||
| 993 | @@: |
995 | @@: |
| 994 | ; Read the inode. |
996 | ; Read the inode. |
| 995 | mov eax, [esp] |
997 | mov eax, [esp] |
| 996 | mov ebx, [ebp + EXTFS.ext2_save_inode] |
998 | mov ebx, [ebp + EXTFS.ext2_save_inode] |
| 997 | call ext2_inode_read |
999 | call ext2_inode_read |
| 998 | test eax, eax |
1000 | test eax, eax |
| 999 | jnz .error_stack4 |
1001 | jnz .error_stack4 |
| 1000 | 1002 | ||
| 1001 | ; Free inode data. |
1003 | ; Free inode data. |
| 1002 | mov esi, [ebp + EXTFS.ext2_save_inode] |
1004 | mov esi, [ebp + EXTFS.ext2_save_inode] |
| 1003 | xor ecx, ecx |
1005 | xor ecx, ecx |
| 1004 | 1006 | ||
| 1005 | @@: |
1007 | @@: |
| 1006 | push ecx |
1008 | push ecx |
| 1007 | call ext2_inode_get_block |
1009 | call ext2_inode_get_block |
| 1008 | test eax, eax |
1010 | test eax, eax |
| 1009 | jnz .error_stack8 |
1011 | jnz .error_stack8 |
| 1010 | mov eax, ecx |
1012 | mov eax, ecx |
| 1011 | pop ecx |
1013 | pop ecx |
| 1012 | 1014 | ||
| 1013 | ; If 0, we're done. |
1015 | ; If 0, we're done. |
| 1014 | test eax, eax |
1016 | test eax, eax |
| 1015 | jz @F |
1017 | jz @F |
| 1016 | 1018 | ||
| 1017 | call ext2_block_free |
1019 | call ext2_block_free |
| 1018 | test eax, eax |
1020 | test eax, eax |
| 1019 | jnz .error_stack4 |
1021 | jnz .error_stack4 |
| 1020 | 1022 | ||
| 1021 | inc ecx |
1023 | inc ecx |
| 1022 | jmp @B |
1024 | jmp @B |
| 1023 | 1025 | ||
| 1024 | @@: |
1026 | @@: |
| 1025 | ; Free indirect blocks. |
1027 | ; Free indirect blocks. |
| 1026 | call ext2_inode_free_indirect_blocks |
1028 | call ext2_inode_free_indirect_blocks |
| 1027 | test eax, eax |
1029 | test eax, eax |
| 1028 | jnz .error_stack4 |
1030 | jnz .error_stack4 |
| 1029 | 1031 | ||
| 1030 | ; Clear the inode, and add deletion time. |
1032 | ; Clear the inode, and add deletion time. |
| 1031 | mov edi, [ebp + EXTFS.ext2_save_inode] |
1033 | mov edi, [ebp + EXTFS.ext2_save_inode] |
| 1032 | xor eax, eax |
1034 | xor eax, eax |
| 1033 | mov ecx, [ebp + EXTFS.inode_size] |
1035 | mov ecx, [ebp + EXTFS.inode_size] |
| 1034 | rep stosb |
1036 | rep stosb |
| 1035 | 1037 | ||
| 1036 | mov edi, [ebp + EXTFS.ext2_save_inode] |
1038 | mov edi, [ebp + EXTFS.ext2_save_inode] |
| 1037 | add edi, EXT2_INODE_STRUC.i_dtime |
1039 | add edi, EXT2_INODE_STRUC.i_dtime |
| 1038 | call current_unix_time |
1040 | call current_unix_time |
| 1039 | 1041 | ||
| 1040 | ; Write the inode. |
1042 | ; Write the inode. |
| 1041 | mov eax, [esp] |
1043 | mov eax, [esp] |
| 1042 | mov ebx, [ebp + EXTFS.ext2_save_inode] |
1044 | mov ebx, [ebp + EXTFS.ext2_save_inode] |
| 1043 | call ext2_inode_write |
1045 | call ext2_inode_write |
| 1044 | test eax, eax |
1046 | test eax, eax |
| 1045 | jnz .error_stack4 |
1047 | jnz .error_stack4 |
| 1046 | 1048 | ||
| 1047 | ; Check if directory. |
1049 | ; Check if directory. |
| 1048 | cmp edx, EXT2_S_IFDIR |
1050 | cmp edx, EXT2_S_IFDIR |
| 1049 | jne @F |
1051 | jne @F |
| 1050 | 1052 | ||
| 1051 | ; If it is, decrement used_dirs_count. |
1053 | ; If it is, decrement used_dirs_count. |
| 1052 | 1054 | ||
| 1053 | ; Get block group. |
1055 | ; Get block group. |
| 1054 | mov eax, [esp] |
1056 | mov eax, [esp] |
| 1055 | dec eax |
1057 | dec eax |
| 1056 | xor edx, edx |
1058 | xor edx, edx |
| 1057 | div [ebp + EXTFS.superblock + EXT2_SB_STRUC.inodes_per_group] |
1059 | div [ebp + EXTFS.superblock + EXT2_SB_STRUC.inodes_per_group] |
| 1058 | 1060 | ||
| 1059 | push eax |
1061 | push eax |
| 1060 | call ext2_bg_read_desc |
1062 | call ext2_bg_read_desc |
| 1061 | test eax, eax |
1063 | test eax, eax |
| 1062 | jz .error_stack8 |
1064 | jz .error_stack8 |
| 1063 | 1065 | ||
| 1064 | dec [eax + EXT2_BLOCK_GROUP_DESC.used_dirs_count] |
1066 | dec [eax + EXT2_BLOCK_GROUP_DESC.used_dirs_count] |
| 1065 | 1067 | ||
| 1066 | pop eax |
1068 | pop eax |
| 1067 | call ext2_bg_write_desc |
1069 | call ext2_bg_write_desc |
| 1068 | 1070 | ||
| 1069 | @@: |
1071 | @@: |
| 1070 | pop eax |
1072 | pop eax |
| 1071 | call ext2_inode_free |
1073 | call ext2_inode_free |
| 1072 | test eax, eax |
1074 | test eax, eax |
| 1073 | jnz .error_access_denied |
1075 | jnz .error_access_denied |
| 1074 | 1076 | ||
| 1075 | .disk_sync: |
1077 | .disk_sync: |
| 1076 | call ext2_sb_update |
1078 | call ext2_sb_update |
| 1077 | 1079 | ||
| 1078 | ; Sync the disk. |
1080 | ; Sync the disk. |
| 1079 | mov esi, [ebp + PARTITION.Disk] |
1081 | mov esi, [ebp + PARTITION.Disk] |
| 1080 | call disk_sync ; eax contains error code, if any. |
1082 | call disk_sync ; eax contains error code, if any. |
| 1081 | 1083 | ||
| 1082 | .return: |
1084 | .return: |
| 1083 | push eax |
1085 | push eax |
| 1084 | call ext2_unlock |
1086 | call ext2_unlock |
| 1085 | pop eax |
1087 | pop eax |
| 1086 | 1088 | ||
| 1087 | pop edi esi edx ecx ebx |
1089 | pop edi esi edx ecx ebx |
| 1088 | ;DEBUGF 1, "And returning with: %x.\n", eax |
1090 | ;DEBUGF 1, "And returning with: %x.\n", eax |
| 1089 | ret |
1091 | ret |
| 1090 | 1092 | ||
| 1091 | .error_stack8: |
1093 | .error_stack8: |
| 1092 | add esp, 4 |
1094 | add esp, 4 |
| 1093 | .error_stack4: |
1095 | .error_stack4: |
| 1094 | add esp, 4 |
1096 | add esp, 4 |
| 1095 | .error_access_denied: |
1097 | .error_access_denied: |
| 1096 | call ext2_sb_update |
1098 | call ext2_sb_update |
| 1097 | 1099 | ||
| 1098 | ; Sync the disk. |
1100 | ; Sync the disk. |
| 1099 | mov esi, [ebp + PARTITION.Disk] |
1101 | mov esi, [ebp + PARTITION.Disk] |
| 1100 | call disk_sync ; eax contains error code, if any. |
1102 | call disk_sync ; eax contains error code, if any. |
| 1101 | 1103 | ||
| 1102 | mov eax, ERROR_ACCESS_DENIED |
1104 | mov eax, ERROR_ACCESS_DENIED |
| 1103 | jmp .return |
1105 | jmp .return |
| 1104 | 1106 | ||
| 1105 | ;--------------------------------------------------------------------- |
1107 | ;--------------------------------------------------------------------- |
| 1106 | ; Set file information for block device. |
1108 | ; Set file information for block device. |
| 1107 | ; Input: esi + [esp + 4] = file name. |
1109 | ; Input: esi + [esp + 4] = file name. |
| 1108 | ; ebx = pointer to paramteres from sysfunc 70. |
1110 | ; ebx = pointer to paramteres from sysfunc 70. |
| 1109 | ; ebp = pointer to EXTFS structure. |
1111 | ; ebp = pointer to EXTFS structure. |
| 1110 | ; Output: eax = error code. |
1112 | ; Output: eax = error code. |
| 1111 | ;--------------------------------------------------------------------- |
1113 | ;--------------------------------------------------------------------- |
| 1112 | ext2_CreateFolder: |
1114 | ext2_CreateFolder: |
| 1113 | ;DEBUGF 1, "Attempting to create folder.\n" |
1115 | ;DEBUGF 1, "Attempting to create folder.\n" |
| 1114 | test [ebp + EXTFS.partition_flags], EXT2_RO |
1116 | test [ebp + EXTFS.partition_flags], EXT2_RO |
| 1115 | jz @F |
1117 | jz @F |
| 1116 | 1118 | ||
| 1117 | mov eax, ERROR_UNSUPPORTED_FS |
1119 | mov eax, ERROR_UNSUPPORTED_FS |
| 1118 | ret |
1120 | ret |
| 1119 | 1121 | ||
| 1120 | @@: |
1122 | @@: |
| 1121 | push ebx ecx edx esi edi |
1123 | push ebx ecx edx esi edi |
| 1122 | call ext2_lock |
1124 | call ext2_lock |
| 1123 | 1125 | ||
| 1124 | add esi, [esp + 20 + 4] |
1126 | add esi, [esp + 20 + 4] |
| 1125 | 1127 | ||
| 1126 | ; Can't create root, but for CreateFolder already existing directory is success. |
1128 | ; Can't create root, but for CreateFolder already existing directory is success. |
| 1127 | cmp byte [esi], 0 |
1129 | cmp byte [esi], 0 |
| 1128 | jz .success |
1130 | jz .success |
| 1129 | 1131 | ||
| 1130 | push esi |
1132 | push esi |
| 1131 | stdcall ext2_inode_find, 0 |
1133 | stdcall ext2_inode_find, 0 |
| 1132 | pop esi |
1134 | pop esi |
| 1133 | 1135 | ||
| 1134 | ; If the directory is there, we've succeeded. |
1136 | ; If the directory is there, we've succeeded. |
| 1135 | test eax, eax |
1137 | test eax, eax |
| 1136 | jz .success |
1138 | jz .success |
| 1137 | 1139 | ||
| 1138 | ; Find parent. |
1140 | ; Find parent. |
| 1139 | call ext2_inode_find_parent |
1141 | call ext2_inode_find_parent |
| 1140 | test eax, eax |
1142 | test eax, eax |
| 1141 | jnz .error |
1143 | jnz .error |
| 1142 | 1144 | ||
| 1143 | ; Inode ID for preference. |
1145 | ; Inode ID for preference. |
| 1144 | mov eax, esi |
1146 | mov eax, esi |
| 1145 | call ext2_inode_alloc |
1147 | call ext2_inode_alloc |
| 1146 | test eax, eax |
1148 | test eax, eax |
| 1147 | jnz .error_full |
1149 | jnz .error_full |
| 1148 | 1150 | ||
| 1149 | ; Save allocated inode in EDX; filename is in EDI; parent ID in ESI. |
1151 | ; Save allocated inode in EDX; filename is in EDI; parent ID in ESI. |
| 1150 | mov edx, ebx |
1152 | mov edx, ebx |
| 1151 | 1153 | ||
| 1152 | push edi |
1154 | push edi |
| 1153 | 1155 | ||
| 1154 | xor al, al |
1156 | xor al, al |
| 1155 | mov edi, [ebp + EXTFS.ext2_temp_inode] |
1157 | mov edi, [ebp + EXTFS.ext2_temp_inode] |
| 1156 | mov ecx, [ebp + EXTFS.inode_size] |
1158 | mov ecx, [ebp + EXTFS.inode_size] |
| 1157 | rep stosb |
1159 | rep stosb |
| 1158 | 1160 | ||
| 1159 | mov edi, [ebp + EXTFS.ext2_temp_inode] |
1161 | mov edi, [ebp + EXTFS.ext2_temp_inode] |
| 1160 | add edi, EXT2_INODE_STRUC.i_atime |
1162 | add edi, EXT2_INODE_STRUC.i_atime |
| 1161 | call current_unix_time |
1163 | call current_unix_time |
| 1162 | 1164 | ||
| 1163 | add edi, 8 |
1165 | add edi, 8 |
| 1164 | call current_unix_time |
1166 | call current_unix_time |
| 1165 | 1167 | ||
| 1166 | pop edi |
1168 | pop edi |
| 1167 | 1169 | ||
| 1168 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
1170 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
| 1169 | mov [ebx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR or PERMISSIONS |
1171 | mov [ebx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFDIR or PERMISSIONS |
| 1170 | mov eax, edx |
1172 | mov eax, edx |
| 1171 | call ext2_inode_write |
1173 | call ext2_inode_write |
| 1172 | test eax, eax |
1174 | test eax, eax |
| 1173 | jnz .error |
1175 | jnz .error |
| 1174 | 1176 | ||
| 1175 | ; Link to self. |
1177 | ; Link to self. |
| 1176 | push edx esi |
1178 | push edx esi |
| 1177 | 1179 | ||
| 1178 | mov eax, edx |
1180 | mov eax, edx |
| 1179 | mov ebx, eax |
1181 | mov ebx, eax |
| 1180 | mov dl, EXT2_FT_DIR |
1182 | mov dl, EXT2_FT_DIR |
| 1181 | mov esi, self_link |
1183 | mov esi, self_link |
| 1182 | call ext2_inode_link |
1184 | call ext2_inode_link |
| 1183 | 1185 | ||
| 1184 | pop esi edx |
1186 | pop esi edx |
| 1185 | 1187 | ||
| 1186 | test eax, eax |
1188 | test eax, eax |
| 1187 | jnz .error |
1189 | jnz .error |
| 1188 | 1190 | ||
| 1189 | ; Link to parent. |
1191 | ; Link to parent. |
| 1190 | push edx esi |
1192 | push edx esi |
| 1191 | 1193 | ||
| 1192 | mov eax, ebx |
1194 | mov eax, ebx |
| 1193 | mov ebx, esi |
1195 | mov ebx, esi |
| 1194 | mov dl, EXT2_FT_DIR |
1196 | mov dl, EXT2_FT_DIR |
| 1195 | mov esi, parent_link |
1197 | mov esi, parent_link |
| 1196 | call ext2_inode_link |
1198 | call ext2_inode_link |
| 1197 | 1199 | ||
| 1198 | pop esi edx |
1200 | pop esi edx |
| 1199 | 1201 | ||
| 1200 | test eax, eax |
1202 | test eax, eax |
| 1201 | jnz .error |
1203 | jnz .error |
| 1202 | 1204 | ||
| 1203 | ; Link parent to child. |
1205 | ; Link parent to child. |
| 1204 | mov eax, esi |
1206 | mov eax, esi |
| 1205 | mov ebx, edx |
1207 | mov ebx, edx |
| 1206 | mov esi, edi |
1208 | mov esi, edi |
| 1207 | mov dl, EXT2_FT_DIR |
1209 | mov dl, EXT2_FT_DIR |
| 1208 | call ext2_inode_link |
1210 | call ext2_inode_link |
| 1209 | test eax, eax |
1211 | test eax, eax |
| 1210 | jnz .error |
1212 | jnz .error |
| 1211 | 1213 | ||
| 1212 | ; Get block group descriptor for allocated inode's block. |
1214 | ; Get block group descriptor for allocated inode's block. |
| 1213 | mov eax, ebx |
1215 | mov eax, ebx |
| 1214 | dec eax |
1216 | dec eax |
| 1215 | xor edx, edx |
1217 | xor edx, edx |
| 1216 | 1218 | ||
| 1217 | ; EAX = block group. |
1219 | ; EAX = block group. |
| 1218 | div [ebp + EXTFS.superblock + EXT2_SB_STRUC.inodes_per_group] |
1220 | div [ebp + EXTFS.superblock + EXT2_SB_STRUC.inodes_per_group] |
| 1219 | mov edx, eax |
1221 | mov edx, eax |
| 1220 | 1222 | ||
| 1221 | call ext2_bg_read_desc |
1223 | call ext2_bg_read_desc |
| 1222 | test eax, eax |
1224 | test eax, eax |
| 1223 | jz .error |
1225 | jz .error |
| 1224 | 1226 | ||
| 1225 | inc [eax + EXT2_BLOCK_GROUP_DESC.used_dirs_count] |
1227 | inc [eax + EXT2_BLOCK_GROUP_DESC.used_dirs_count] |
| 1226 | mov eax, edx |
1228 | mov eax, edx |
| 1227 | call ext2_bg_write_desc |
1229 | call ext2_bg_write_desc |
| 1228 | test eax, eax |
1230 | test eax, eax |
| 1229 | jnz .error |
1231 | jnz .error |
| 1230 | 1232 | ||
| 1231 | .success: |
1233 | .success: |
| 1232 | call ext2_sb_update |
1234 | call ext2_sb_update |
| 1233 | 1235 | ||
| 1234 | ; Sync the disk. |
1236 | ; Sync the disk. |
| 1235 | mov esi, [ebp + PARTITION.Disk] |
1237 | mov esi, [ebp + PARTITION.Disk] |
| 1236 | call disk_sync ; eax contains error code, if any. |
1238 | call disk_sync ; eax contains error code, if any. |
| 1237 | 1239 | ||
| 1238 | .return: |
1240 | .return: |
| 1239 | push eax |
1241 | push eax |
| 1240 | call ext2_unlock |
1242 | call ext2_unlock |
| 1241 | pop eax |
1243 | pop eax |
| 1242 | 1244 | ||
| 1243 | pop edi esi edx ecx ebx |
1245 | pop edi esi edx ecx ebx |
| 1244 | ;DEBUGF 1, "Returning with: %x.\n", eax |
1246 | ;DEBUGF 1, "Returning with: %x.\n", eax |
| 1245 | ret |
1247 | ret |
| 1246 | 1248 | ||
| 1247 | .error: |
1249 | .error: |
| 1248 | call ext2_sb_update |
1250 | call ext2_sb_update |
| 1249 | 1251 | ||
| 1250 | ; Sync the disk. |
1252 | ; Sync the disk. |
| 1251 | mov esi, [ebp + PARTITION.Disk] |
1253 | mov esi, [ebp + PARTITION.Disk] |
| 1252 | call disk_sync ; eax contains error code, if any. |
1254 | call disk_sync ; eax contains error code, if any. |
| 1253 | 1255 | ||
| 1254 | mov eax, ERROR_ACCESS_DENIED |
1256 | mov eax, ERROR_ACCESS_DENIED |
| 1255 | jmp .return |
1257 | jmp .return |
| 1256 | 1258 | ||
| 1257 | .error_full: |
1259 | .error_full: |
| 1258 | mov eax, ERROR_DISK_FULL |
1260 | mov eax, ERROR_DISK_FULL |
| 1259 | jmp .return |
1261 | jmp .return |
| 1260 | 1262 | ||
| 1261 | self_link db ".", 0 |
1263 | self_link db ".", 0 |
| 1262 | parent_link db "..", 0 |
1264 | parent_link db "..", 0 |
| 1263 | 1265 | ||
| 1264 | ;--------------------------------------------------------------------- |
1266 | ;--------------------------------------------------------------------- |
| 1265 | ; Rewrite a file. |
1267 | ; Rewrite a file. |
| 1266 | ; Input: esi + [esp + 4] = file name. |
1268 | ; Input: esi + [esp + 4] = file name. |
| 1267 | ; ebx = pointer to paramteres from sysfunc 70. |
1269 | ; ebx = pointer to paramteres from sysfunc 70. |
| 1268 | ; ebp = pointer to EXTFS structure. |
1270 | ; ebp = pointer to EXTFS structure. |
| 1269 | ; Output: eax = error code. |
1271 | ; Output: eax = error code. |
| 1270 | ; ebx = bytes written. |
1272 | ; ebx = bytes written. |
| 1271 | ;--------------------------------------------------------------------- |
1273 | ;--------------------------------------------------------------------- |
| 1272 | ext2_Rewrite: |
1274 | ext2_Rewrite: |
| 1273 | ;DEBUGF 1, "Attempting Rewrite.\n" |
1275 | ;DEBUGF 1, "Attempting Rewrite.\n" |
| 1274 | test [ebp + EXTFS.partition_flags], EXT2_RO |
1276 | test [ebp + EXTFS.partition_flags], EXT2_RO |
| 1275 | jz @F |
1277 | jz @F |
| 1276 | 1278 | ||
| 1277 | mov eax, ERROR_UNSUPPORTED_FS |
1279 | mov eax, ERROR_UNSUPPORTED_FS |
| 1278 | ret |
1280 | ret |
| 1279 | 1281 | ||
| 1280 | @@: |
1282 | @@: |
| 1281 | push ecx edx esi edi |
1283 | push ecx edx esi edi |
| 1282 | pushad |
1284 | pushad |
| 1283 | 1285 | ||
| 1284 | call ext2_lock |
1286 | call ext2_lock |
| 1285 | 1287 | ||
| 1286 | add esi, [esp + 16 + 32 + 4] |
1288 | add esi, [esp + 16 + 32 + 4] |
| 1287 | ; Can't create root. |
1289 | ; Can't create root. |
| 1288 | cmp byte [esi], 0 |
1290 | cmp byte [esi], 0 |
| 1289 | jz .error_access_denied |
1291 | jz .error_access_denied |
| 1290 | 1292 | ||
| 1291 | push esi |
1293 | push esi |
| 1292 | stdcall ext2_inode_find, 0 |
1294 | stdcall ext2_inode_find, 0 |
| 1293 | pop esi |
1295 | pop esi |
| 1294 | 1296 | ||
| 1295 | ; If the file is there, delete it. |
1297 | ; If the file is there, delete it. |
| 1296 | test eax, eax |
1298 | test eax, eax |
| 1297 | jnz @F |
1299 | jnz @F |
| 1298 | 1300 | ||
| 1299 | pushad |
1301 | pushad |
| 1300 | 1302 | ||
| 1301 | push eax |
1303 | push eax |
| 1302 | call ext2_unlock |
1304 | call ext2_unlock |
| 1303 | pop eax |
1305 | pop eax |
| 1304 | 1306 | ||
| 1305 | push dword 0x00000000 |
1307 | push dword 0x00000000 |
| 1306 | call ext2_Delete |
1308 | call ext2_Delete |
| 1307 | add esp, 4 |
1309 | add esp, 4 |
| 1308 | 1310 | ||
| 1309 | push eax |
1311 | push eax |
| 1310 | call ext2_lock |
1312 | call ext2_lock |
| 1311 | pop eax |
1313 | pop eax |
| 1312 | 1314 | ||
| 1313 | test eax, eax |
1315 | test eax, eax |
| 1314 | jnz .error_access_denied_delete |
1316 | jnz .error_access_denied_delete |
| 1315 | 1317 | ||
| 1316 | popad |
1318 | popad |
| 1317 | @@: |
1319 | @@: |
| 1318 | ; Find parent. |
1320 | ; Find parent. |
| 1319 | call ext2_inode_find_parent |
1321 | call ext2_inode_find_parent |
| 1320 | test eax, eax |
1322 | test eax, eax |
| 1321 | jnz .error_access_denied |
1323 | jnz .error_access_denied |
| 1322 | 1324 | ||
| 1323 | ; Inode ID for preference. |
1325 | ; Inode ID for preference. |
| 1324 | mov eax, esi |
1326 | mov eax, esi |
| 1325 | call ext2_inode_alloc |
1327 | call ext2_inode_alloc |
| 1326 | test eax, eax |
1328 | test eax, eax |
| 1327 | jnz .error_full |
1329 | jnz .error_full |
| 1328 | 1330 | ||
| 1329 | ; Save allocated inode in EDX; filename is in EDI; parent ID in ESI. |
1331 | ; Save allocated inode in EDX; filename is in EDI; parent ID in ESI. |
| 1330 | mov edx, ebx |
1332 | mov edx, ebx |
| 1331 | 1333 | ||
| 1332 | push edi |
1334 | push edi |
| 1333 | 1335 | ||
| 1334 | xor al, al |
1336 | xor al, al |
| 1335 | mov edi, [ebp + EXTFS.ext2_temp_inode] |
1337 | mov edi, [ebp + EXTFS.ext2_temp_inode] |
| 1336 | mov ecx, [ebp + EXTFS.inode_size] |
1338 | mov ecx, [ebp + EXTFS.inode_size] |
| 1337 | rep stosb |
1339 | rep stosb |
| 1338 | 1340 | ||
| 1339 | mov edi, [ebp + EXTFS.ext2_temp_inode] |
1341 | mov edi, [ebp + EXTFS.ext2_temp_inode] |
| 1340 | add edi, EXT2_INODE_STRUC.i_atime |
1342 | add edi, EXT2_INODE_STRUC.i_atime |
| 1341 | call current_unix_time |
1343 | call current_unix_time |
| 1342 | 1344 | ||
| 1343 | add edi, 8 |
1345 | add edi, 8 |
| 1344 | call current_unix_time |
1346 | call current_unix_time |
| 1345 | 1347 | ||
| 1346 | pop edi |
1348 | pop edi |
| 1347 | 1349 | ||
| 1348 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
1350 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
| 1349 | mov [ebx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFREG or PERMISSIONS |
1351 | mov [ebx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFREG or PERMISSIONS |
| 1350 | mov eax, edx |
1352 | mov eax, edx |
| 1351 | call ext2_inode_write |
1353 | call ext2_inode_write |
| 1352 | test eax, eax |
1354 | test eax, eax |
| 1353 | jnz .error |
1355 | jnz .error |
| 1354 | 1356 | ||
| 1355 | ; Link parent to child. |
1357 | ; Link parent to child. |
| 1356 | mov eax, esi |
1358 | mov eax, esi |
| 1357 | mov ebx, edx |
1359 | mov ebx, edx |
| 1358 | mov esi, edi |
1360 | mov esi, edi |
| 1359 | mov dl, EXT2_FT_REG_FILE |
1361 | mov dl, EXT2_FT_REG_FILE |
| 1360 | call ext2_inode_link |
1362 | call ext2_inode_link |
| 1361 | test eax, eax |
1363 | test eax, eax |
| 1362 | jnz .error |
1364 | jnz .error |
| 1363 | 1365 | ||
| 1364 | popad |
1366 | popad |
| 1365 | push eax |
1367 | push eax |
| 1366 | call ext2_unlock |
1368 | call ext2_unlock |
| 1367 | pop eax |
1369 | pop eax |
| 1368 | 1370 | ||
| 1369 | push dword 0x00000000 |
1371 | push dword 0x00000000 |
| 1370 | call ext2_Write |
1372 | call ext2_Write |
| 1371 | add esp, 4 |
1373 | add esp, 4 |
| 1372 | 1374 | ||
| 1373 | push eax |
1375 | push eax |
| 1374 | call ext2_lock |
1376 | call ext2_lock |
| 1375 | pop eax |
1377 | pop eax |
| 1376 | 1378 | ||
| 1377 | .success: |
1379 | .success: |
| 1378 | push eax |
1380 | push eax |
| 1379 | call ext2_sb_update |
1381 | call ext2_sb_update |
| 1380 | 1382 | ||
| 1381 | ; Sync the disk. |
1383 | ; Sync the disk. |
| 1382 | mov esi, [ebp + PARTITION.Disk] |
1384 | mov esi, [ebp + PARTITION.Disk] |
| 1383 | call disk_sync ; eax contains error code, if any. |
1385 | call disk_sync ; eax contains error code, if any. |
| 1384 | pop eax |
1386 | pop eax |
| 1385 | 1387 | ||
| 1386 | .return: |
1388 | .return: |
| 1387 | push eax |
1389 | push eax |
| 1388 | call ext2_unlock |
1390 | call ext2_unlock |
| 1389 | pop eax |
1391 | pop eax |
| 1390 | 1392 | ||
| 1391 | pop edi esi edx ecx |
1393 | pop edi esi edx ecx |
| 1392 | 1394 | ||
| 1393 | ;DEBUGF 1, "And returning with: %x.\n", eax |
1395 | ;DEBUGF 1, "And returning with: %x.\n", eax |
| 1394 | ret |
1396 | ret |
| 1395 | 1397 | ||
| 1396 | .error: |
1398 | .error: |
| 1397 | mov eax, ERROR_ACCESS_DENIED |
1399 | mov eax, ERROR_ACCESS_DENIED |
| 1398 | jmp .success |
1400 | jmp .success |
| 1399 | 1401 | ||
| 1400 | .error_access_denied_delete: |
1402 | .error_access_denied_delete: |
| 1401 | popad |
1403 | popad |
| 1402 | 1404 | ||
| 1403 | .error_access_denied: |
1405 | .error_access_denied: |
| 1404 | popad |
1406 | popad |
| 1405 | xor ebx, ebx |
1407 | xor ebx, ebx |
| 1406 | 1408 | ||
| 1407 | mov eax, ERROR_ACCESS_DENIED |
1409 | mov eax, ERROR_ACCESS_DENIED |
| 1408 | jmp .return |
1410 | jmp .return |
| 1409 | 1411 | ||
| 1410 | .error_full: |
1412 | .error_full: |
| 1411 | popad |
1413 | popad |
| 1412 | xor ebx, ebx |
1414 | xor ebx, ebx |
| 1413 | 1415 | ||
| 1414 | mov eax, ERROR_DISK_FULL |
1416 | mov eax, ERROR_DISK_FULL |
| 1415 | jmp .return |
1417 | jmp .return |
| 1416 | 1418 | ||
| 1417 | ;--------------------------------------------------------------------- |
1419 | ;--------------------------------------------------------------------- |
| 1418 | ; Write to a file. |
1420 | ; Write to a file. |
| 1419 | ; Input: esi + [esp + 4] = file name. |
1421 | ; Input: esi + [esp + 4] = file name. |
| 1420 | ; ebx = pointer to paramteres from sysfunc 70. |
1422 | ; ebx = pointer to paramteres from sysfunc 70. |
| 1421 | ; ebp = pointer to EXTFS structure. |
1423 | ; ebp = pointer to EXTFS structure. |
| 1422 | ; Output: eax = error code. |
1424 | ; Output: eax = error code. |
| 1423 | ; ebx = number of bytes written. |
1425 | ; ebx = number of bytes written. |
| 1424 | ;--------------------------------------------------------------------- |
1426 | ;--------------------------------------------------------------------- |
| 1425 | ext2_Write: |
1427 | ext2_Write: |
| 1426 | ;DEBUGF 1, "Attempting write, " |
1428 | ;DEBUGF 1, "Attempting write, " |
| 1427 | test [ebp + EXTFS.partition_flags], EXT2_RO |
1429 | test [ebp + EXTFS.partition_flags], EXT2_RO |
| 1428 | jz @F |
1430 | jz @F |
| 1429 | 1431 | ||
| 1430 | mov eax, ERROR_UNSUPPORTED_FS |
1432 | mov eax, ERROR_UNSUPPORTED_FS |
| 1431 | ret |
1433 | ret |
| 1432 | 1434 | ||
| 1433 | @@: |
1435 | @@: |
| 1434 | push ecx edx esi edi |
1436 | push ecx edx esi edi |
| 1435 | call ext2_lock |
1437 | call ext2_lock |
| 1436 | 1438 | ||
| 1437 | add esi, [esp + 16 + 4] |
1439 | add esi, [esp + 16 + 4] |
| 1438 | 1440 | ||
| 1439 | ; Can't write to root. |
1441 | ; Can't write to root. |
| 1440 | cmp byte [esi], 0 |
1442 | cmp byte [esi], 0 |
| 1441 | jz .error |
1443 | jz .error |
| 1442 | 1444 | ||
| 1443 | push ebx ecx edx |
1445 | push ebx ecx edx |
| 1444 | stdcall ext2_inode_find, 0 |
1446 | stdcall ext2_inode_find, 0 |
| 1445 | pop edx ecx ebx |
1447 | pop edx ecx ebx |
| 1446 | ; If file not there, error. |
1448 | ; If file not there, error. |
| 1447 | xor ecx, ecx |
1449 | xor ecx, ecx |
| 1448 | test eax, eax |
1450 | test eax, eax |
| 1449 | jnz .error_file_not_found |
1451 | jnz .error_file_not_found |
| 1450 | 1452 | ||
| 1451 | ; Save the inode. |
1453 | ; Save the inode. |
| 1452 | push esi |
1454 | push esi |
| 1453 | 1455 | ||
| 1454 | ; Check if it's a file. |
1456 | ; Check if it's a file. |
| 1455 | mov edx, [ebp + EXTFS.ext2_save_inode] |
1457 | mov edx, [ebp + EXTFS.ext2_save_inode] |
| 1456 | test [edx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFREG |
1458 | test [edx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFREG |
| 1457 | jz .error |
1459 | jz .error |
| 1458 | 1460 | ||
| 1459 | mov eax, esi |
1461 | mov eax, esi |
| 1460 | mov ecx, [ebx + 4] |
1462 | mov ecx, [ebx + 4] |
| 1461 | 1463 | ||
| 1462 | call ext2_inode_extend |
1464 | call ext2_inode_extend |
| 1463 | xor ecx, ecx |
1465 | xor ecx, ecx |
| 1464 | test eax, eax |
1466 | test eax, eax |
| 1465 | jnz .error_device |
1467 | jnz .error_device |
| 1466 | 1468 | ||
| 1467 | ; ECX contains the size to write, and ESI points to it. |
1469 | ; ECX contains the size to write, and ESI points to it. |
| 1468 | mov ecx, [ebx + 0x0C] |
1470 | mov ecx, [ebx + 0x0C] |
| 1469 | mov esi, [ebx + 0x10] |
1471 | mov esi, [ebx + 0x10] |
| 1470 | 1472 | ||
| 1471 | ; Save the size of the inode. |
1473 | ; Save the size of the inode. |
| 1472 | mov eax, [edx + EXT2_INODE_STRUC.i_size] |
1474 | mov eax, [edx + EXT2_INODE_STRUC.i_size] |
| 1473 | push eax |
1475 | push eax |
| 1474 | 1476 | ||
| 1475 | xor edx, edx |
1477 | xor edx, edx |
| 1476 | div [ebp + EXTFS.block_size] |
1478 | div [ebp + EXTFS.block_size] |
| 1477 | 1479 | ||
| 1478 | test edx, edx |
1480 | test edx, edx |
| 1479 | jz .start_aligned |
1481 | jz .start_aligned |
| 1480 | 1482 | ||
| 1481 | ; Start isn't aligned, so deal with the non-aligned bytes. |
1483 | ; Start isn't aligned, so deal with the non-aligned bytes. |
| 1482 | mov ebx, [ebp + EXTFS.block_size] |
1484 | mov ebx, [ebp + EXTFS.block_size] |
| 1483 | sub ebx, edx |
1485 | sub ebx, edx |
| 1484 | 1486 | ||
| 1485 | cmp ebx, ecx |
1487 | cmp ebx, ecx |
| 1486 | jbe @F |
1488 | jbe @F |
| 1487 | 1489 | ||
| 1488 | ; If the size to copy fits in current block, limit to that, instead of the entire block. |
1490 | ; If the size to copy fits in current block, limit to that, instead of the entire block. |
| 1489 | mov ebx, ecx |
1491 | mov ebx, ecx |
| 1490 | 1492 | ||
| 1491 | @@: |
1493 | @@: |
| 1492 | ; Copy EBX bytes, in EAX indexed block. |
1494 | ; Copy EBX bytes, in EAX indexed block. |
| 1493 | push eax |
1495 | push eax |
| 1494 | call ext2_inode_read_entry |
1496 | call ext2_inode_read_entry |
| 1495 | test eax, eax |
1497 | test eax, eax |
| 1496 | pop eax |
1498 | pop eax |
| 1497 | jnz .error_inode_size |
1499 | jnz .error_inode_size |
| 1498 | 1500 | ||
| 1499 | push ecx |
1501 | push ecx |
| 1500 | 1502 | ||
| 1501 | mov ecx, ebx |
1503 | mov ecx, ebx |
| 1502 | mov edi, ebx |
1504 | mov edi, ebx |
| 1503 | add edi, edx |
1505 | add edi, edx |
| 1504 | rep movsb |
1506 | rep movsb |
| 1505 | 1507 | ||
| 1506 | pop ecx |
1508 | pop ecx |
| 1507 | 1509 | ||
| 1508 | ; Write the block. |
1510 | ; Write the block. |
| 1509 | call ext2_inode_write_entry |
1511 | call ext2_inode_write_entry |
| 1510 | test eax, eax |
1512 | test eax, eax |
| 1511 | jnz .error_inode_size |
1513 | jnz .error_inode_size |
| 1512 | 1514 | ||
| 1513 | add [esp], ebx |
1515 | add [esp], ebx |
| 1514 | sub ecx, ebx |
1516 | sub ecx, ebx |
| 1515 | jz .write_inode |
1517 | jz .write_inode |
| 1516 | 1518 | ||
| 1517 | .start_aligned: |
1519 | .start_aligned: |
| 1518 | cmp ecx, [ebp + EXTFS.block_size] |
1520 | cmp ecx, [ebp + EXTFS.block_size] |
| 1519 | jb @F |
1521 | jb @F |
| 1520 | 1522 | ||
| 1521 | mov eax, [esp] |
1523 | mov eax, [esp] |
| 1522 | xor edx, edx |
1524 | xor edx, edx |
| 1523 | div [ebp + EXTFS.block_size] |
1525 | div [ebp + EXTFS.block_size] |
| 1524 | 1526 | ||
| 1525 | push eax |
1527 | push eax |
| 1526 | mov edx, [esp + 8] |
1528 | mov edx, [esp + 8] |
| 1527 | call ext2_inode_blank_entry |
1529 | call ext2_inode_blank_entry |
| 1528 | test eax, eax |
1530 | test eax, eax |
| 1529 | pop eax |
1531 | pop eax |
| 1530 | jnz .error_inode_size |
1532 | jnz .error_inode_size |
| 1531 | 1533 | ||
| 1532 | push ecx |
1534 | push ecx |
| 1533 | 1535 | ||
| 1534 | mov ecx, [ebp + EXTFS.block_size] |
1536 | mov ecx, [ebp + EXTFS.block_size] |
| 1535 | mov edi, [ebp + EXTFS.ext2_save_block] |
1537 | mov edi, [ebp + EXTFS.ext2_save_block] |
| 1536 | rep movsb |
1538 | rep movsb |
| 1537 | 1539 | ||
| 1538 | pop ecx |
1540 | pop ecx |
| 1539 | 1541 | ||
| 1540 | call ext2_inode_write_entry |
1542 | call ext2_inode_write_entry |
| 1541 | test eax, eax |
1543 | test eax, eax |
| 1542 | jnz .error_inode_size |
1544 | jnz .error_inode_size |
| 1543 | 1545 | ||
| 1544 | mov eax, [ebp + EXTFS.block_size] |
1546 | mov eax, [ebp + EXTFS.block_size] |
| 1545 | sub ecx, eax |
1547 | sub ecx, eax |
| 1546 | add [esp], eax |
1548 | add [esp], eax |
| 1547 | jmp .start_aligned |
1549 | jmp .start_aligned |
| 1548 | 1550 | ||
| 1549 | ; Handle the remaining bytes. |
1551 | ; Handle the remaining bytes. |
| 1550 | @@: |
1552 | @@: |
| 1551 | test ecx, ecx |
1553 | test ecx, ecx |
| 1552 | jz .write_inode |
1554 | jz .write_inode |
| 1553 | 1555 | ||
| 1554 | mov eax, [esp] |
1556 | mov eax, [esp] |
| 1555 | xor edx, edx |
1557 | xor edx, edx |
| 1556 | div [ebp + EXTFS.block_size] |
1558 | div [ebp + EXTFS.block_size] |
| 1557 | 1559 | ||
| 1558 | push eax |
1560 | push eax |
| 1559 | call ext2_inode_read_entry |
1561 | call ext2_inode_read_entry |
| 1560 | test eax, eax |
1562 | test eax, eax |
| 1561 | pop eax |
1563 | pop eax |
| 1562 | jz @F |
1564 | jz @F |
| 1563 | 1565 | ||
| 1564 | push eax |
1566 | push eax |
| 1565 | mov edx, [esp + 8] |
1567 | mov edx, [esp + 8] |
| 1566 | 1568 | ||
| 1567 | call ext2_inode_blank_entry |
1569 | call ext2_inode_blank_entry |
| 1568 | test eax, eax |
1570 | test eax, eax |
| 1569 | pop eax |
1571 | pop eax |
| 1570 | jnz .error_inode_size |
1572 | jnz .error_inode_size |
| 1571 | 1573 | ||
| 1572 | @@: |
1574 | @@: |
| 1573 | push ecx |
1575 | push ecx |
| 1574 | mov edi, [ebp + EXTFS.ext2_save_block] |
1576 | mov edi, [ebp + EXTFS.ext2_save_block] |
| 1575 | rep movsb |
1577 | rep movsb |
| 1576 | pop ecx |
1578 | pop ecx |
| 1577 | 1579 | ||
| 1578 | call ext2_inode_write_entry |
1580 | call ext2_inode_write_entry |
| 1579 | test eax, eax |
1581 | test eax, eax |
| 1580 | jnz .error_inode_size |
1582 | jnz .error_inode_size |
| 1581 | 1583 | ||
| 1582 | add [esp], ecx |
1584 | add [esp], ecx |
| 1583 | xor ecx, ecx |
1585 | xor ecx, ecx |
| 1584 | 1586 | ||
| 1585 | .write_inode: |
1587 | .write_inode: |
| 1586 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
1588 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
| 1587 | pop eax |
1589 | pop eax |
| 1588 | mov [ebx + EXT2_INODE_STRUC.i_size], eax |
1590 | mov [ebx + EXT2_INODE_STRUC.i_size], eax |
| 1589 | mov eax, [esp] |
1591 | mov eax, [esp] |
| 1590 | 1592 | ||
| 1591 | call ext2_inode_write |
1593 | call ext2_inode_write |
| 1592 | test eax, eax |
1594 | test eax, eax |
| 1593 | jnz .error_device |
1595 | jnz .error_device |
| 1594 | 1596 | ||
| 1595 | .success: |
1597 | .success: |
| 1596 | call ext2_sb_update |
1598 | call ext2_sb_update |
| 1597 | 1599 | ||
| 1598 | ; Sync the disk. |
1600 | ; Sync the disk. |
| 1599 | mov esi, [ebp + PARTITION.Disk] |
1601 | mov esi, [ebp + PARTITION.Disk] |
| 1600 | call disk_sync ; eax contains error code, if any. |
1602 | call disk_sync ; eax contains error code, if any. |
| 1601 | 1603 | ||
| 1602 | .return: |
1604 | .return: |
| 1603 | push eax |
1605 | push eax |
| 1604 | call ext2_unlock |
1606 | call ext2_unlock |
| 1605 | pop eax |
1607 | pop eax |
| 1606 | 1608 | ||
| 1607 | add esp, 4 |
1609 | add esp, 4 |
| 1608 | 1610 | ||
| 1609 | mov ebx, [esp + 12] |
1611 | mov ebx, [esp + 12] |
| 1610 | sub ebx, ecx |
1612 | sub ebx, ecx |
| 1611 | pop edi esi edx ecx |
1613 | pop edi esi edx ecx |
| 1612 | 1614 | ||
| 1613 | ;DEBUGF 1, "and returning with: %x.\n", eax |
1615 | ;DEBUGF 1, "and returning with: %x.\n", eax |
| 1614 | ret |
1616 | ret |
| 1615 | 1617 | ||
| 1616 | .error: |
1618 | .error: |
| 1617 | mov eax, ERROR_ACCESS_DENIED |
1619 | mov eax, ERROR_ACCESS_DENIED |
| 1618 | jmp .return |
1620 | jmp .return |
| 1619 | 1621 | ||
| 1620 | .error_file_not_found: |
1622 | .error_file_not_found: |
| 1621 | mov eax, ERROR_FILE_NOT_FOUND |
1623 | mov eax, ERROR_FILE_NOT_FOUND |
| 1622 | jmp .return |
1624 | jmp .return |
| 1623 | 1625 | ||
| 1624 | .error_inode_size: |
1626 | .error_inode_size: |
| 1625 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
1627 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
| 1626 | pop eax |
1628 | pop eax |
| 1627 | mov [ebx + EXT2_INODE_STRUC.i_size], eax |
1629 | mov [ebx + EXT2_INODE_STRUC.i_size], eax |
| 1628 | mov eax, [esp] |
1630 | mov eax, [esp] |
| 1629 | 1631 | ||
| 1630 | call ext2_inode_write |
1632 | call ext2_inode_write |
| 1631 | 1633 | ||
| 1632 | .error_device: |
1634 | .error_device: |
| 1633 | call ext2_sb_update |
1635 | call ext2_sb_update |
| 1634 | 1636 | ||
| 1635 | ; Sync the disk. |
1637 | ; Sync the disk. |
| 1636 | mov esi, [ebp + PARTITION.Disk] |
1638 | mov esi, [ebp + PARTITION.Disk] |
| 1637 | call disk_sync ; eax contains error code, if any. |
1639 | call disk_sync ; eax contains error code, if any. |
| 1638 | 1640 | ||
| 1639 | mov eax, ERROR_DEVICE |
1641 | mov eax, ERROR_DEVICE |
| 1640 | jmp .return |
1642 | jmp .return |
| 1641 | 1643 | ||
| 1642 | ;--------------------------------------------------------------------- |
1644 | ;--------------------------------------------------------------------- |
| 1643 | ; Set the end of a file. |
1645 | ; Set the end of a file. |
| 1644 | ; Input: esi + [esp + 4] = file name. |
1646 | ; Input: esi + [esp + 4] = file name. |
| 1645 | ; ebx = pointer to paramteres from sysfunc 70. |
1647 | ; ebx = pointer to paramteres from sysfunc 70. |
| 1646 | ; ebp = pointer to EXTFS structure. |
1648 | ; ebp = pointer to EXTFS structure. |
| 1647 | ; Output: eax = error code. |
1649 | ; Output: eax = error code. |
| 1648 | ;--------------------------------------------------------------------- |
1650 | ;--------------------------------------------------------------------- |
| 1649 | ext2_SetFileEnd: |
1651 | ext2_SetFileEnd: |
| 1650 | test [ebp + EXTFS.partition_flags], EXT2_RO |
1652 | test [ebp + EXTFS.partition_flags], EXT2_RO |
| 1651 | jz @F |
1653 | jz @F |
| 1652 | 1654 | ||
| 1653 | mov eax, ERROR_UNSUPPORTED_FS |
1655 | mov eax, ERROR_UNSUPPORTED_FS |
| 1654 | ret |
1656 | ret |
| 1655 | 1657 | ||
| 1656 | @@: |
1658 | @@: |
| 1657 | push ebx ecx edx esi edi |
1659 | push ebx ecx edx esi edi |
| 1658 | call ext2_lock |
1660 | call ext2_lock |
| 1659 | 1661 | ||
| 1660 | add esi, [esp + 20 + 4] |
1662 | add esi, [esp + 20 + 4] |
| 1661 | 1663 | ||
| 1662 | ; Can't write to root. |
1664 | ; Can't write to root. |
| 1663 | cmp byte [esi], 0 |
1665 | cmp byte [esi], 0 |
| 1664 | jz .error |
1666 | jz .error |
| 1665 | 1667 | ||
| 1666 | stdcall ext2_inode_find, 0 |
1668 | stdcall ext2_inode_find, 0 |
| 1667 | ; If file not there, error. |
1669 | ; If file not there, error. |
| 1668 | test eax, eax |
1670 | test eax, eax |
| 1669 | jnz .error_file_not_found |
1671 | jnz .error_file_not_found |
| 1670 | 1672 | ||
| 1671 | ; Check if it's a file. |
1673 | ; Check if it's a file. |
| 1672 | mov edx, [ebp + EXTFS.ext2_save_inode] |
1674 | mov edx, [ebp + EXTFS.ext2_save_inode] |
| 1673 | cmp [edx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFREG |
1675 | cmp [edx + EXT2_INODE_STRUC.i_mode], EXT2_S_IFREG |
| 1674 | jne .error |
1676 | jne .error |
| 1675 | 1677 | ||
| 1676 | mov eax, esi |
1678 | mov eax, esi |
| 1677 | mov ecx, [ebx + 4] |
1679 | mov ecx, [ebx + 4] |
| 1678 | call ext2_inode_extend |
1680 | call ext2_inode_extend |
| 1679 | test eax, eax |
1681 | test eax, eax |
| 1680 | jnz .error_disk_full |
1682 | jnz .error_disk_full |
| 1681 | 1683 | ||
| 1682 | mov eax, esi |
1684 | mov eax, esi |
| 1683 | call ext2_inode_truncate |
1685 | call ext2_inode_truncate |
| 1684 | test eax, eax |
1686 | test eax, eax |
| 1685 | jnz .error_disk_full |
1687 | jnz .error_disk_full |
| 1686 | 1688 | ||
| 1687 | mov eax, esi |
1689 | mov eax, esi |
| 1688 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
1690 | mov ebx, [ebp + EXTFS.ext2_temp_inode] |
| 1689 | call ext2_inode_write |
1691 | call ext2_inode_write |
| 1690 | 1692 | ||
| 1691 | call ext2_sb_update |
1693 | call ext2_sb_update |
| 1692 | 1694 | ||
| 1693 | ; Sync the disk. |
1695 | ; Sync the disk. |
| 1694 | mov esi, [ebp + PARTITION.Disk] |
1696 | mov esi, [ebp + PARTITION.Disk] |
| 1695 | call disk_sync ; eax contains error code, if any. |
1697 | call disk_sync ; eax contains error code, if any. |
| 1696 | 1698 | ||
| 1697 | .return: |
1699 | .return: |
| 1698 | push eax |
1700 | push eax |
| 1699 | call ext2_unlock |
1701 | call ext2_unlock |
| 1700 | pop eax |
1702 | pop eax |
| 1701 | 1703 | ||
| 1702 | pop edi esi edx ecx ebx |
1704 | pop edi esi edx ecx ebx |
| 1703 | ret |
1705 | ret |
| 1704 | 1706 | ||
| 1705 | .error: |
1707 | .error: |
| 1706 | mov eax, ERROR_ACCESS_DENIED |
1708 | mov eax, ERROR_ACCESS_DENIED |
| 1707 | jmp .return |
1709 | jmp .return |
| 1708 | 1710 | ||
| 1709 | .error_file_not_found: |
1711 | .error_file_not_found: |
| 1710 | mov eax, ERROR_FILE_NOT_FOUND |
1712 | mov eax, ERROR_FILE_NOT_FOUND |
| 1711 | jmp .return |
1713 | jmp .return |
| 1712 | 1714 | ||
| 1713 | .error_disk_full: |
1715 | .error_disk_full: |
| 1714 | call ext2_sb_update |
1716 | call ext2_sb_update |
| 1715 | 1717 | ||
| 1716 | ; Sync the disk. |
1718 | ; Sync the disk. |
| 1717 | mov esi, [ebp + PARTITION.Disk] |
1719 | mov esi, [ebp + PARTITION.Disk] |
| 1718 | call disk_sync ; eax contains error code, if any. |
1720 | call disk_sync ; eax contains error code, if any. |
| 1719 | 1721 | ||
| 1720 | mov eax, ERROR_DISK_FULL |
1722 | mov eax, ERROR_DISK_FULL |
| 1721 | jmp .return |
1723 | jmp .return |