69 lines
1.2 KiB
C
69 lines
1.2 KiB
C
#include "os/os.h"
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#include "os/str.h"
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#include "os/mem.h"
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#include "bk_fdtable.h"
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#include "bk_filesystem.h"
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#define MAX_BK_FILE_NUMBER CONFIG_VFS_MAX_FD_NUM
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static struct bk_file files[MAX_BK_FILE_NUMBER];
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int bk_fdtable_init(void) {
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int i;
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for (i = 0; i < MAX_BK_FILE_NUMBER; i++) {
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files[i].magic = 0;
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}
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files[0].magic = BK_FILE_MAGIC; //modify xhh, let fd don't return 0
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return 0;
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}
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struct bk_file * bk_file_get(void) {
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int i;
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for (i = 0; i < MAX_BK_FILE_NUMBER; i++) {
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if (files[i].magic != BK_FILE_MAGIC) {
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files[i].magic = BK_FILE_MAGIC;
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return &files[i];
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}
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}
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return NULL;
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}
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void bk_file_put(struct bk_file *file) {
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file->magic = 0;
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file->filesystem = NULL;
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file->f_ops = NULL;
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file->f_data = NULL;
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#if CONFIG_STARBURST_AIDIALOG_SDK
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file->path = NULL;
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#endif
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}
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struct bk_file *bk_fd_to_file(int fd) {
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if (fd < 0 || fd > MAX_BK_FILE_NUMBER)
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return NULL;
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if (files[fd].magic != BK_FILE_MAGIC)
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return NULL;
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return &files[fd];
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}
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int bk_file_to_fd(struct bk_file *file) {
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if (!file)
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return -1;
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if (file < files || file > files + MAX_BK_FILE_NUMBER)
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return -1;
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return file - files;
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}
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