| 40,6 → 40,8 |
|---|
| #include <string.h> |
| #include <assert.h> |
| #include <bool.h> |
| #include <fibril.h> |
| #include <fibril_sync.h> |
| #include "vfs.h" |
| |
| /** |
| 55,9 → 57,9 |
|---|
| * first VFS_OPEN operation. |
| * |
| * This resource being per-connection and, in the first place, per-fibril, we |
| * don't need to protect it by a futex. |
| * don't need to protect it by a mutex. |
| */ |
| __thread vfs_file_t **files = NULL; |
| fibril_local vfs_file_t **files = NULL; |
| |
| /** Initialize the table of open files. */ |
| bool vfs_files_init(void) |
| 78,19 → 80,23 |
|---|
| */ |
| int vfs_fd_alloc(void) |
| { |
| int i; |
| |
| if (!vfs_files_init()) |
| return ENOMEM; |
| |
| unsigned int i; |
| for (i = 0; i < MAX_OPEN_FILES; i++) { |
| if (!files[i]) { |
| files[i] = (vfs_file_t *) malloc(sizeof(vfs_file_t)); |
| if (!files[i]) |
| return ENOMEM; |
| |
| memset(files[i], 0, sizeof(vfs_file_t)); |
| futex_initialize(&files[i]->lock, 1); |
| fibril_mutex_initialize(&files[i]->lock); |
| vfs_file_addref(files[i]); |
| return i; |
| return (int) i; |
| } |
| } |
| |
| return EMFILE; |
| } |
| |
| 103,10 → 109,15 |
|---|
| */ |
| int vfs_fd_free(int fd) |
| { |
| if (!vfs_files_init()) |
| return ENOMEM; |
| |
| if ((fd < 0) || (fd >= MAX_OPEN_FILES) || (files[fd] == NULL)) |
| return EBADF; |
| |
| vfs_file_delref(files[fd]); |
| files[fd] = NULL; |
| |
| return EOK; |
| } |
| |
| 150,11 → 161,15 |
|---|
| */ |
| vfs_file_t *vfs_file_get(int fd) |
| { |
| if (!vfs_files_init()) |
| return NULL; |
| |
| if ((fd >= 0) && (fd < MAX_OPEN_FILES)) |
| return files[fd]; |
| |
| return NULL; |
| } |
| |
| /** |
| * @} |
| */ |
| */ |