| /trunk/uspace/srv/vfs/vfs.h |
|---|
| 147,6 → 147,9 |
| * than one task, there will be a separate structure allocated for each task. |
| */ |
| typedef struct { |
| /** Serializes access to this open file. */ |
| futex_t lock; |
| vfs_node_t *node; |
| /** Number of file handles referencing this file. */ |
| /trunk/uspace/srv/vfs/vfs_rdwr.c |
|---|
| 82,6 → 82,12 |
| } |
| /* |
| * Lock the open file structure so that no other thread can manipulate |
| * the same open file at a time. |
| */ |
| futex_down(&file->lock); |
| /* |
| * Lock the file's node so that no other client can read/write to it at |
| * the same time. |
| */ |
| 126,9 → 132,10 |
| rwlock_writer_unlock(&file->node->contents_rwlock); |
| /* |
| * Update the position pointer. |
| * Update the position pointer and unlock the open file. |
| */ |
| file->pos += bytes; |
| futex_up(&file->lock); |
| /* |
| * FS server's reply is the final result of the whole operation we |
| /trunk/uspace/srv/vfs/vfs_file.c |
|---|
| 86,6 → 86,7 |
| if (!files[i]) |
| return ENOMEM; |
| memset(files[i], 0, sizeof(vfs_file_t)); |
| futex_initialize(&files[i]->lock, 1); |
| vfs_file_addref(files[i]); |
| return i; |
| } |