diff options
| -rw-r--r-- | main.c | 4 | ||||
| -rw-r--r-- | procfs.c | 28 | ||||
| -rw-r--r-- | procfs.h | 5 |
3 files changed, 36 insertions, 1 deletions
@@ -42,6 +42,10 @@ root_make_node (struct node **np) if (! *np) return ENOMEM; + /* Since this one is not created through proc_lookup(), we have to affect an + inode number to it. */ + (*np)->nn_stat.st_ino = * (uint32_t *) "PROC"; + return 0; } @@ -67,6 +67,29 @@ fail: return NULL; } +/* FIXME: possibly not the fastest hash function... */ +ino64_t +procfs_make_ino (struct node *np, const char *filename) +{ + unsigned short x[3]; + + if (! strcmp (filename, ".")) + return np->nn_stat.st_ino; + if (! strcmp (filename, "..")) + return np->nn->parent ? np->nn->parent->nn_stat.st_ino : /* FIXME: */ 42; + + assert (sizeof np->nn_stat.st_ino > sizeof x); + memcpy (x, &np->nn_stat.st_ino, sizeof x); + + while (*filename) + { + x[0] ^= *(filename++); + jrand48 (x); + } + + return jrand48 (x); +} + error_t procfs_get_contents (struct node *np, void **data, size_t *data_len) { if (np->nn->ops->enable_refresh_hack_and_break_readdir && np->nn->contents) @@ -116,7 +139,10 @@ error_t procfs_lookup (struct node *np, const char *name, struct node **npp) { err = np->nn->ops->lookup (np->nn->hook, name, npp); if (! err) - netfs_nref ((*npp)->nn->parent = np); + { + (*npp)->nn_stat.st_ino = procfs_make_ino (np, name); + netfs_nref ((*npp)->nn->parent = np); + } } return err; @@ -51,6 +51,11 @@ struct node *procfs_make_node (const struct procfs_node_ops *ops, void *hook); /* Interface for the libnetfs side. */ +/* Get the inode number which will be given to a child of NP named FILENAME. + This allows us to retreive them for readdir() without creating the + corresponding child nodes. */ +ino64_t procfs_make_ino (struct node *np, const char *filename); + error_t procfs_get_contents (struct node *np, void **data, size_t *data_len); error_t procfs_lookup (struct node *np, const char *name, struct node **npp); void procfs_cleanup (struct node *np); |