diff options
Diffstat (limited to 'procfs.h')
| -rw-r--r-- | procfs.h | 14 |
1 files changed, 8 insertions, 6 deletions
@@ -16,9 +16,11 @@ struct procfs_node_ops symlink or directory, as determined by the file mode in netnode->nn_stat. For regular files and symlinks, they are what you would expect; for directories, they are an argz vector of the - names of the entries. */ - error_t (*get_contents) (void *hook, char **contents, size_t *contents_len); - void (*cleanup_contents) (void *hook, char *contents, size_t contents_len); + names of the entries. If upon return, *CONTENTS_LEN is negative or + unchanged, the call is considered to have failed because of a memory + allocation error. */ + error_t (*get_contents) (void *hook, char **contents, ssize_t *contents_len); + void (*cleanup_contents) (void *hook, char *contents, ssize_t contents_len); /* Lookup NAME in this directory, and store the result in *np. The returned node should be created by lookup() using procfs_make_node() @@ -41,8 +43,8 @@ struct procfs_node_ops }; /* These helper functions can be used as procfs_node_ops.cleanup_contents. */ -void procfs_cleanup_contents_with_free (void *, char *, size_t); -void procfs_cleanup_contents_with_vm_deallocate (void *, char *, size_t); +void procfs_cleanup_contents_with_free (void *, char *, ssize_t); +void procfs_cleanup_contents_with_vm_deallocate (void *, char *, ssize_t); /* Create a new node and return it. Returns NULL if it fails to allocate enough memory. In this case, ops->cleanup will be invoked. */ @@ -69,7 +71,7 @@ void procfs_node_chtype (struct node *np, mode_t type); corresponding child nodes. */ ino64_t procfs_make_ino (struct node *np, const char *filename); -error_t procfs_get_contents (struct node *np, char **data, size_t *data_len); +error_t procfs_get_contents (struct node *np, char **data, ssize_t *data_len); error_t procfs_lookup (struct node *np, const char *name, struct node **npp); void procfs_cleanup (struct node *np); |