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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6725 | siemargl | 1 | /* |
| 2 | Kolibri OS port for gcc 5.4 |
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| 3 | |||
| 4 | Started by Siemargl @Nov 2016 |
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| 5 | |||
| 6 | Contains realisation of directory handling functions: |
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| 7 | mkdir() |
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| 8 | closedir() |
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| 9 | opendir() |
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| 10 | readdir() |
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| 11 | rewinddir() |
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| 12 | |||
| 13 | !!non reentrant |
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| 14 | */ |
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| 15 | |||
| 16 | #include |
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| 17 | #include |
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| 18 | #include |
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| 19 | #include |
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| 20 | #include |
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| 21 | #include |
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| 22 | #include "kos32sys1.h" |
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| 23 | |||
| 24 | /* defined in newlib headers |
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| 25 | int _EXFUN(mkdir,( const char *_path, mode_t __mode )); |
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| 26 | |||
| 27 | struct dirent { |
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| 28 | char d_namlen; |
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| 29 | char d_name[256]; |
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| 30 | }; |
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| 31 | |||
| 32 | typedef struct |
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| 33 | { |
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| 34 | // struct systree_info2 fileinfo; |
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| 35 | struct dirent entry; |
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| 36 | // __u8 bdfeheader[0x20]; |
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| 37 | // struct bdfe_item bdfebase; |
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| 38 | // __u8 bdfename[264]; |
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| 39 | } DIR; |
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| 40 | |||
| 41 | int closedir(DIR *dirp); |
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| 42 | DIR * opendir(const char *_dirname); |
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| 43 | struct dirent * readdir(DIR *_dirp); |
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| 44 | void rewinddir(DIR *_dirp); |
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| 45 | */ |
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| 46 | |||
| 47 | static int32_t lastread_block = -1; // non reentrant, must me -1ed in closedir, or will assert |
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| 48 | static uint32_t lastread_dir_size; |
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| 49 | static DIR lastread_dir; |
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| 50 | |||
| 51 | DIR *opendir(const char *_dirname) |
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| 52 | { |
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| 53 | assert(sizeof(struct fs_dirinfo) == 25); // check struct aligment |
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| 54 | assert(lastread_block == -1); |
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| 55 | |||
| 56 | struct fs_dirinfo di; |
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| 57 | struct fs_dirheader dhead; |
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| 58 | |||
| 59 | memset(&di, 0, sizeof di); |
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| 60 | di.ppath = (char*)_dirname; |
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| 61 | di.retval = (uint32_t)&dhead; |
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| 62 | int rc = sf_file(1, &di); // read dir size |
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| 63 | if(rc) { |
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| 64 | fprintf(stderr, "Error reading dir size %s\n", _dirname); |
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| 65 | errno = rc; |
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| 66 | return NULL; |
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| 67 | } |
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| 68 | lastread_dir_size = dhead.totl_blocks; |
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| 69 | |||
| 70 | lastread_dir.entry.d_namlen = strlen(_dirname); |
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| 71 | assert (lastread_dir.entry.d_namlen < sizeof(lastread_dir.entry.d_name)); |
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| 72 | strcpy(lastread_dir.entry.d_name, _dirname); |
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| 73 | |||
| 74 | return &lastread_dir; |
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| 75 | }; |
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| 76 | |||
| 77 | |||
| 78 | int closedir(DIR *dirp) |
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| 79 | { |
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| 80 | assert (lastread_block != -1); // was opened |
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| 81 | |||
| 82 | if (!dirp || lastread_block == -1) |
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| 83 | { |
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| 84 | errno = EBADF; |
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| 85 | return -1; |
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| 86 | } |
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| 87 | lastread_block = -1; |
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| 88 | lastread_dir_size = 0; |
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| 89 | lastread_dir.entry.d_namlen = 0; |
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| 90 | lastread_dir.entry.d_name[0] = '\0'; |
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| 91 | |||
| 92 | return 0; |
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| 93 | }; |
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| 94 | |||
| 95 | |||
| 96 | struct dirent* readdir(DIR *dirp) |
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| 97 | { |
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| 98 | assert (lastread_block != -1); // was opened |
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| 99 | |||
| 100 | if (!dirp || lastread_block == -1) |
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| 101 | { |
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| 102 | errno = EBADF; |
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| 103 | return NULL; |
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| 104 | } |
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| 105 | struct fs_dirinfo di; |
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| 106 | |||
| 107 | assert (lastread_block != -1); // was opened |
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| 108 | |||
| 109 | char retdir[sizeof(struct fs_dirheader) + sizeof(struct fsBDFE)]; // 1 block w/cp866 encoding |
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| 110 | struct fsBDFE *bdfe = (struct fsBDFE *)(retdir + sizeof(struct fs_dirheader)); |
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| 111 | memset(&di, 0, sizeof di); |
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| 112 | di.ppath = dirp->entry.d_name; |
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| 113 | di.retval = (uint32_t)retdir; |
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| 114 | di.start = lastread_block; |
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| 115 | di.size = 1; |
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| 116 | |||
| 117 | int rc = sf_file(1, &di); // read dir |
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| 118 | if(rc) { |
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| 119 | fprintf(stderr, "Error %d reading dir item %s", rc, dirp->entry.d_name); |
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| 120 | errno = rc; |
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| 121 | return NULL; |
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| 122 | } |
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| 123 | |||
| 124 | static struct dirent ent; |
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| 125 | ent.d_namlen = strlen(bdfe->fname); |
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| 126 | assert (ent.d_namlen < sizeof(ent.d_name)); |
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| 127 | strcpy(ent.d_name, bdfe->fname); |
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| 128 | lastread_block++; |
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| 129 | |||
| 130 | return &ent; |
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| 131 | }; |
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| 132 | |||
| 133 | |||
| 134 | void rewinddir(DIR *dirp) |
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| 135 | { |
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| 136 | if (!dirp || lastread_block == -1) |
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| 137 | { |
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| 138 | return; |
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| 139 | } |
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| 140 | |||
| 141 | lastread_block = 0; |
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| 142 | } |
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| 143 | |||
| 144 | |||
| 145 | int mkdir(const char *_path, mode_t m) |
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| 146 | { |
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| 147 | struct fs_dirinfo di; |
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| 148 | memset(&di, 0, sizeof di); |
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| 149 | di.ppath = (char*)_path; |
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| 150 | |||
| 151 | int rc = sf_file(9, &di); // creat dir |
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| 152 | if(rc) { |
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| 153 | fprintf(stderr, "Error %d creating dir item %s", rc, _path); |
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| 154 | errno = rc; |
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| 155 | return -1; |
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| 156 | } |
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| 157 | |||
| 158 | return 0; |
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| 159 | } |
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| 160 | |||
| 161 | |||
| 162 | /* tested example |
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| 163 | void* read_folderdata(char* name) |
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| 164 | { |
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| 165 | struct fs_dirinfo di; |
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| 166 | struct fs_dirheader dhead; |
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| 167 | assert(sizeof di == 25); |
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| 168 | |||
| 169 | memset(&di, 0, sizeof di); |
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| 170 | di.ppath = name; |
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| 171 | di.retval = (uint32_t)&dhead; |
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| 172 | int rc = sf_file(1, &di); // read dir size |
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| 173 | if(rc) { |
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| 174 | debug_board_printf("Error reading dir size %s", name); |
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| 175 | exit(1); |
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| 176 | } |
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| 177 | di.size = dhead.totl_blocks; |
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| 178 | |||
| 179 | char *retdir = malloc(sizeof dhead + dhead.totl_blocks * sizeof(struct fsBDFE)); |
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| 180 | if(!retdir) { |
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| 181 | debug_board_printf("No memory for dir %s", name); |
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| 182 | exit(1); |
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| 183 | } |
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| 184 | di.retval = (uint32_t)retdir; |
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| 185 | rc = sf_file(1, &di); // read dir |
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| 186 | if(rc) { |
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| 187 | debug_board_printf("Error 2 reading dir size %s", name); |
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| 188 | exit(1); |
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| 189 | } |
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| 190 | |||
| 191 | // manual clear mark flag (random junk in fname free space) |
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| 192 | int i; |
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| 193 | for (i = 0; i < dhead.totl_blocks; i++) |
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| 194 | ((struct fsBDFE*)(retdir+32))[i].fname[259] = 0; |
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| 195 | |||
| 196 | debug_board_printf("Loaded dir [%s] etnries %d,\n first file [%s]\n", name, ((struct fs_dirheader*)(retdir))->curn_blocks, ((struct fsBDFE*)(retdir+32))->fname); |
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| 197 | |||
| 198 | return retdir; |
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| 199 | } |
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| 200 | */ |