| Adrien Destugues | 613f859 | 2017-06-05 20:19:46 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017, Adrien Destugues, pulkomandy@pulkomandy.tk |
| 3 | * Distributed under terms of the MIT license. |
| 4 | */ |
| 5 | |
| 6 | |
| 7 | #include "cfs-fatfs.h" |
| 8 | |
| 9 | #include "cfs.h" |
| 10 | #include "cfs-service.h" |
| 11 | |
| 12 | #include "fatfs/ff.h" |
| 13 | |
| 14 | #include <stdlib.h> |
| 15 | |
| 16 | static int s_open(const char *n, int f); |
| 17 | static void s_close(int f); |
| 18 | static int s_read(int f, char *b, unsigned int l); |
| 19 | static int s_write(int f, char *b, unsigned int l); |
| 20 | static int s_opendir(struct cfs_dir *p, const char *n); |
| 21 | static int s_readdir(struct cfs_dir *p, struct cfs_dirent *e); |
| 22 | static int s_closedir(struct cfs_dir *p); |
| 23 | |
| 24 | static const struct cfs_service_interface interface = |
| 25 | { |
| 26 | CFS_SERVICE_VERSION, |
| 27 | s_open, |
| 28 | s_close, |
| 29 | s_read, |
| 30 | s_write, |
| 31 | f_opendir, |
| 32 | s_readdir, |
| 33 | f_closedir |
| 34 | }; |
| 35 | |
| 36 | EK_EVENTHANDLER(eventhandler, ev, data); |
| 37 | EK_PROCESS(proc, CFS_SERVICE_NAME, EK_PRIO_NORMAL, |
| 38 | eventhandler, NULL, (void *)&interface); |
| 39 | /*---------------------------------------------------------------------------*/ |
| 40 | EK_PROCESS_INIT(cfs_fatfs_init, arg) |
| 41 | { |
| 42 | arg_free(arg); |
| 43 | ek_service_start(CFS_SERVICE_NAME, &proc); |
| 44 | } |
| 45 | /*---------------------------------------------------------------------------*/ |
| 46 | EK_EVENTHANDLER(eventhandler, ev, data) |
| 47 | { |
| 48 | switch(ev) { |
| 49 | case EK_EVENT_INIT: |
| 50 | break; |
| 51 | case EK_EVENT_REQUEST_REPLACE: |
| 52 | ek_replace((struct ek_proc *)data, &interface); |
| 53 | break; |
| 54 | case EK_EVENT_REQUEST_EXIT: |
| 55 | ek_exit(); |
| 56 | break; |
| 57 | } |
| 58 | } |
| 59 | /*---------------------------------------------------------------------------*/ |
| 60 | |
| 61 | static int s_open(const char* n, int f) |
| 62 | { |
| 63 | int mode; |
| 64 | if (f == CFS_READ) |
| 65 | mode = FA_READ | FA_OPEN_EXISTING; |
| 66 | else |
| 67 | mode = FA_WRITE | FA_CREATE_ALWAYS; |
| 68 | FIL* ptr = malloc(sizeof(FIL)); |
| 69 | FRESULT r = f_open(ptr, n, mode); |
| 70 | |
| 71 | if (r != FR_OK) { |
| 72 | free(ptr); |
| 73 | return -1; |
| 74 | } |
| 75 | return ptr; |
| 76 | } |
| 77 | |
| 78 | static void |
| 79 | s_close(int f) |
| 80 | { |
| 81 | f_close(f); |
| 82 | free(f); |
| 83 | } |
| 84 | |
| 85 | static int s_read(int f, char* b, unsigned int l) |
| 86 | { |
| 87 | if (f == -1) |
| 88 | return -1; |
| 89 | |
| 90 | int r = 0; |
| 91 | f_read(f, b, l, &r); |
| 92 | return r; |
| 93 | } |
| 94 | |
| 95 | static int s_write(int f, char* b, unsigned int l) |
| 96 | { |
| 97 | int r = 0; |
| 98 | f_write(f, b, l, &r); |
| 99 | return r; |
| 100 | } |
| 101 | |
| 102 | |
| 103 | static int s_readdir(struct cfs_dir *p, struct cfs_dirent *e) |
| 104 | { |
| 105 | FILINFO info; |
| 106 | f_readdir(p, &info); |
| 107 | |
| 108 | strncpy(e->name, info.fname, 13); |
| 109 | e->size = info.fsize; |
| 110 | |
| 111 | return 0; |
| 112 | } |