|
@@ -10,8 +10,10 @@
|
|
|
#include <stdio.h>
|
|
|
#include <stdlib.h>
|
|
|
#else
|
|
|
+#include <stdlib.h>
|
|
|
#include <sys/mman.h>
|
|
|
#include <sys/types.h>
|
|
|
+#include <sys/stat.h>
|
|
|
#include <unistd.h>
|
|
|
#include <fcntl.h>
|
|
|
#endif
|
|
@@ -19,20 +21,7 @@
|
|
|
#define __miniffs_internal
|
|
|
#include <miniffs.h>
|
|
|
|
|
|
-/* Exported API */
|
|
|
-miniffs_t *miniffs_openfs(char *host_file)
|
|
|
-{
|
|
|
- return NULL;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/* Some internal functions */
|
|
|
-void *miniffs_getfileaddr(miniffs_t *fs, fileentry_t *fent)
|
|
|
-{
|
|
|
-
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
+/* Internal functions */
|
|
|
size_t host_map_file(char *filename, char **dest)
|
|
|
{
|
|
|
char *ret_ptr;
|
|
@@ -55,7 +44,7 @@ size_t host_map_file(char *filename, char **dest)
|
|
|
|
|
|
fd = open(filename, O_RDWR);
|
|
|
fstat(fd, &FileStat);
|
|
|
- ret_ptr = (char *)mmap(NULL, FileStat.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
|
|
+ ret_ptr = (char *)mmap(NULL, FileStat.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
|
|
|
close(fd);
|
|
|
fileSize = FileStat.st_size;
|
|
|
if (ret_ptr == MAP_FAILED)
|
|
@@ -77,4 +66,43 @@ void host_unmap_file(char **dest, size_t length)
|
|
|
#endif
|
|
|
|
|
|
*dest = NULL;
|
|
|
-}
|
|
|
+}
|
|
|
+
|
|
|
+/* Exported API */
|
|
|
+miniffs_t *miniffs_openfs(char *host_file)
|
|
|
+{
|
|
|
+ miniffs_t *fs = NULL;
|
|
|
+
|
|
|
+ fs = (miniffs_t *)calloc(1, sizeof(miniffs_t));
|
|
|
+ if (fs == NULL)
|
|
|
+ {
|
|
|
+ miniffs_seterror(MINIFFS_ALLOCATION_ERROR);
|
|
|
+ goto exit;
|
|
|
+ }
|
|
|
+
|
|
|
+ host_map_file(host_file, (char **)&fs->memoryOffset);
|
|
|
+
|
|
|
+ fs->header = (miniffs_header_t *)fs->memoryOffset;
|
|
|
+
|
|
|
+ if (!miniffs_isvalidfs(fs))
|
|
|
+ {
|
|
|
+ miniffs_seterror(MINIFFS_INVALID_FS);
|
|
|
+ goto free_and_exit;
|
|
|
+ }
|
|
|
+
|
|
|
+ goto exit;
|
|
|
+
|
|
|
+ free_and_exit:
|
|
|
+ free(fs);
|
|
|
+ fs = NULL;
|
|
|
+
|
|
|
+ exit:
|
|
|
+ return fs;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/* Some internal functions */
|
|
|
+void *miniffs_getfileaddr(miniffs_t *fs, fileentry_t *fent)
|
|
|
+{
|
|
|
+ return fs->memoryOffset + fent->offset;
|
|
|
+}
|