FreeCalypso > hg > freecalypso-tools

annotate target-utils/libtiffs/init.c @ 1012:11391cb6bdc0

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patch from fixeria: doc change from SE K2x0 to K2xx Since their discovery in late 2022, Sony Ericsson K200 and K220 phones were collectively referred to as SE K2x0 in FreeCalypso documentation. However, now that SE K205 has been discovered as yet another member of the same family (same PCBA in different case), it makes more sense to refer to the whole family as SE K2xx.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 23 Sep 2024 12:23:20 +0000
parents c10a65f7563e
children
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1 #include "types.h"
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2 #include "struct.h"
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3 #include "globals.h"
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4 #include "macros.h"
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5
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6 static const u8 ffs_sector_signature[6] = {'F', 'f', 's', '#', 0x10, 0x02};
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7
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8 static
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9 find_indexblk()
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10 {
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11 u32 sector_addr;
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12 u8 *sector_ptr;
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13 int i;
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14
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15 printf("Looking for TIFFS active index block\n");
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16 sector_addr = tiffs_base_addr;
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17 for (i = 0; i < tiffs_nsectors; i++) {
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18 sector_ptr = (u8 *) sector_addr;
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19 if (!bcmp(sector_ptr, ffs_sector_signature, 6) &&
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20 sector_ptr[8] == 0xAB) {
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21 printf("Found at %08X\n", sector_addr);
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22 tiffs_active_index = (struct inode *) sector_ptr;
0
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23 return(0);
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24 }
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25 sector_addr += tiffs_sector_size;
0
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26 }
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27 printf("Error: Not found in any of the %d candidate sectors\n",
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28 tiffs_nsectors);
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29 return(-1);
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30 }
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31
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32 static
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33 find_rootino()
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34 {
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35 int ino;
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36 struct inode *irec;
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37
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38 printf("Looking for the root inode\n");
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39 for (ino = 1; ; ino++) {
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40 if (ino >= tiffs_sector_size >> 4) {
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41 printf("Error: Hit end of sector, no root inode found\n");
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42 return(-1);
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43 }
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44 irec = tiffs_active_index + ino;
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45 if (irec->type == OBJTYPE_DIR && *inode_to_dataptr(irec) == '/')
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46 break;
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47 }
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48 printf("Found at inode #%x\n", ino);
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49 tiffs_root_ino = ino;
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50 return(0);
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51 }
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53 tiffs_init()
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54 {
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55 int stat;
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56
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57 if (tiffs_init_done)
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58 return(0);
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59 stat = find_indexblk();
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60 if (stat < 0)
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61 return(stat);
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62 stat = find_rootino();
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63 if (stat < 0)
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64 return(stat);
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65 tiffs_init_done = 1;
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66 return(0);
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67 }