wok-current annotate linld/stuff/src/ISO9660.CPP @ rev 22187

updated xorg-dev-proto (7.5 -> 7.7)
author Hans-G?nter Theisgen
date Mon Nov 11 09:07:45 2019 +0100 (2019-11-11)
parents c19368210c2b
children 53c1379e13fa
rev   line source
pascal@19515 1 #include "crtl.h"
pascal@19515 2 #include "crtlx.h"
pascal@19515 3 #include "iso9660.h"
pascal@19515 4 #define __ROCKRIDGE
pascal@19515 5
pascal@20747 6 #if 1
pascal@20747 7 #define setdirofs(to,sec) (*(int*)((char*)&(to)+1) = *(int*)&(sec)<<(SECTORBITS-8))
pascal@20747 8 #define cpydirofs(to,from) (*(int*)((char*)&(to)+1) = *(int*)((char*)&(from)+1))
pascal@20747 9 #else
pascal@20747 10 #define setdirofs(to,sec) (to = (sec)<<SECTORBITS)
pascal@20747 11 #define cpydirofs(to,from) ((to) = (from))
pascal@20747 12 #endif
pascal@20747 13
pascal@21628 14 int isoroot(void)
pascal@19515 15 {
pascal@19825 16 static const unsigned long root = 16UL * 2048;
pascal@19571 17 struct isostate *x=&isostate;
pascal@21628 18 if (isoreadsector(&root) == -1 || strhead(x->buffer+1,"CD001") == -1) {
pascal@19571 19 //close(x->fd);
pascal@19515 20 return -1;
pascal@19515 21 }
pascal@20747 22 setdirofs(x->dirofs, (* (unsigned long *) (isostate.buffer + 0x9E)));
pascal@20632 23 x->dirsize = filesize2dirsize(* (unsigned long *) (isostate.buffer + 0xA6));
pascal@19515 24 return 0;
pascal@19515 25 }
pascal@19515 26
pascal@20747 27 int isoreaddir(void)
pascal@19515 28 {
pascal@19636 29 char *p;
pascal@19515 30 #ifdef __ROCKRIDGE
pascal@19515 31 char *endname;
pascal@19515 32 #endif
pascal@19571 33 struct isostate *x=&isostate;
pascal@19515 34
pascal@20747 35 if (x->curdirsize == 0xFFFF) {
pascal@19826 36 x->curdirsize = x->dirsize;
pascal@20747 37 cpydirofs(x->curdirofs, x->dirofs);
pascal@19826 38 goto restarted;
pascal@19515 39 }
pascal@20534 40 if (x->curpos >= SECTORSZ || * (short *) (x->buffer + x->curpos) == 0) {
pascal@20538 41 restarted:
pascal@19826 42 if (x->curdirsize < DIRSECTORSZ) return -1;
pascal@20534 43 isoreadsector(&x->curdirofs);
pascal@20453 44 //x->curdirofs += SECTORSZ;
pascal@20453 45 *(int *)((char *) &x->curdirofs+1) += SECTORSZ/256;
pascal@19826 46 x->curdirsize -= DIRSECTORSZ;
pascal@20458 47 x->curpos = 0;
pascal@19515 48 }
pascal@20534 49 p = x->buffer; p += x->curpos;
pascal@21735 50 if ((x->entrysize = * (short *) p) == 0) {
pascal@19515 51 return -1;
pascal@20538 52 }
pascal@19636 53 x->fileofs = (* (unsigned long *) (p + 2)) << SECTORBITS;
pascal@19636 54 x->filesize = * (unsigned long *) (p + 10);
pascal@20543 55 x->filemod = 0x81ED; if (p[25] & 2) ((char *)&(x->filemod))[1] = 0x41;
pascal@20543 56 //x->filemod = (p[25] & 2) ? 0040755 : 0100755;
pascal@20453 57 //x->filemod = 0100755 - ((p[25] & (char)2) << 13);
pascal@19515 58 #ifdef __ROCKRIDGE
pascal@19515 59 endname = NULL;
pascal@19636 60 // p += 34 + (p[32] & -2); ?
pascal@20534 61 p = x->buffer + 34 + ((p[32] + x->curpos) & -2);
pascal@19515 62 do {
pascal@19636 63 int len = p[2];
pascal@20751 64 # if 0
pascal@19636 65 switch (* (short *) p) {
pascal@19515 66 case 0x5850: // PX
pascal@19636 67 x->filemod = * (short *) (p + 4);
pascal@19515 68 break;
pascal@20751 69 case 0x4D4E: // NM
pascal@20751 70 # else
pascal@20751 71 if (* (short *) p == 0x4D4E) {
pascal@20751 72 # endif
pascal@20751 73 x->filename = p + 5;
pascal@20751 74 endname = p + len;
pascal@19515 75 }
pascal@19636 76 p += len;
pascal@21735 77 } while (x->buffer + x->curpos + x->entrysize - 2 > p);
pascal@19515 78 if (endname)
pascal@19515 79 *endname = 0;
pascal@19515 80 else
pascal@19515 81 #endif
pascal@19515 82 {
pascal@20534 83 p = x->buffer + 33; x->filename = p += x->curpos;
pascal@19636 84 p--;
pascal@20453 85 if (((* (short *) p) & 0xFEFF) -1 == 0) {
pascal@20453 86 x->filename = "..";
pascal@20453 87 if ((* (short *) p) == 1)
pascal@20453 88 x->filename++;
pascal@20453 89 }
pascal@20453 90 else {
pascal@19636 91 p += *p; p--;
pascal@19636 92 if (* (short *) (p) != 0x313B) {
pascal@19636 93 p++; p++; // no ;1 to remove
pascal@19636 94 }
pascal@19636 95 if (p[-1] == '.') p--;
pascal@19636 96 *p = 0;
pascal@19515 97 }
pascal@19515 98 }
pascal@21735 99 x->curpos += x->entrysize;
pascal@19515 100 return 0;
pascal@19515 101 }
pascal@19515 102
pascal@19825 103 //#define IS_DIR(x)( ((x) & ~0777) == 040000)
pascal@20454 104 //#define IS_DIR(x)( (char)((x) >> 9) == (char)040)
pascal@20454 105 //#define IS_DIR(x)( (*((char*) &x + 1) & (char)0776) == (char)0100)
pascal@20454 106 #define IS_DIR(x)( (*((char*) &x + 1) & (char)0676) == (char)0)
pascal@21628 107 int _isoopen(void)
pascal@19515 108 {
pascal@21735 109 // char *name, *s, c;
pascal@21735 110 // char _64bits = cpuhaslm();
pascal@19571 111 struct isostate *x=&isostate;
pascal@21735 112 #define name (x->filename2open)
pascal@21754 113 #define c (x->c)
pascal@21754 114 #define _64bits (x->_64bits)
pascal@21735 115 char *s;
pascal@19515 116
pascal@21735 117 _64bits = cpuhaslm();
pascal@20528 118 do {
pascal@21628 119 for (s = (char *) x->filename2open; *s == '/' ; s++) {
pascal@21628 120 isoroot();
pascal@19515 121 }
pascal@19825 122 next:
pascal@20751 123 name = s;
pascal@21754 124 do s++; while (*s && *s != '/');
pascal@21750 125 c = *s; *s = 0;
pascal@21576 126 for (x->curdirsize = 0xFFFF; isoreaddir() != -1;) {
pascal@21735 127 const char *n = name;
pascal@21735 128 #define i (x->tmp)
pascal@21735 129 i = x->filename;
pascal@19825 130 if (_64bits) {
pascal@21628 131 if (strhead(i, n) == -1) continue;
pascal@19825 132 n = "64";
pascal@19825 133 i += s - name; // strlen(name);
pascal@19515 134 }
pascal@19825 135 if (strcmp(i, n)) continue;
pascal@19825 136 *s++ = c;
pascal@19825 137 if (IS_DIR(x->filemod)) {
pascal@20747 138 cpydirofs(x->dirofs, x->fileofs);
pascal@19826 139 x->dirsize = filesize2dirsize(x->filesize);
pascal@19825 140 if (c) goto next;
pascal@19515 141 }
pascal@19825 142 isolseek(&x->fileofs);
pascal@19825 143 return 0;
pascal@19515 144 }
pascal@20528 145 } while ((_64bits ^= CPUMASKLM) == 0);
pascal@19825 146 return -1;
pascal@19515 147 }