iofunc_rename()

Выполнить проверки доступа для сообщения _IO_CONNECT_RENAME

Прототип:

#include <sys/iofunc.h>
                                       
int iofunc_rename( resmgr_context_t *ctp,
                   io_rename_t *msg,
                   iofunc_attr_t *oldattr,
                   iofunc_attr_t *olddattr,
                   iofunc_attr_t *newattr,
                   iofunc_attr_t *newdattr,
                   struct _client_info *info );

Аргументы:

ctp: A pointer to a resmgr_context_t structure that the resource-manager library uses to pass context information between functions.
msg: A pointer to the io_rename_t structure that contains the message that the resource manager received.
oldattr: A pointer to the iofunc_attr_t structure that describes the characteristics of the resource.
olddattr: NULL, or a pointer to the iofunc_attr_t structure that describes the characteristics of the parent directory.
newattr: A pointer to the iofunc_attr_t structure that describes the characteristics of the target, if it exists.
newdattr: NULL, or a pointer to the iofunc_attr_t structure that describes the characteristics of the parent directory of the target.
info: NULL, or a pointer to a struct _client_info that contains the information about a client connection.

The function iofunc_rename() does permission checks for the _IO_CONNECT message (subtype _IO_CONNECT_RENAME) for context ctp. The newattr argument is the attribute of the target if it already exists.

This function is similar to iofunc_open(). The iofunc_rename() function checks to see if the client (described by the optional info structure) has access to open the resource (name passed in the msg structure). The attr structure describes the resource's attributes.

The info argument can be passed as NULL, in which case iofunc_rename() obtains the client information itself via a call to iofunc_client_info(). It is, of course, more efficient to get the client information once, rather than call this function with NULL every time.

Возвращаемое значение:

EACCES: The client doesn't have permissions to do the operation.
EBADFSYS: NULL was passed in oldattr, olddattr, or newdattr.
EFAULT: A fault occurred when the kernel tried to access the info buffer.
EINVAL: The oldattr and newdattr have identical values, the client process is no longer valid, or attempt to remove the parent (".") directory.
EISDIR: The old link is a directory but the new link isn't a directory.
ENOTDIR: Attempt to unlink a nondirectory entry using directory semantics (e.g. "rmdir file").
ENOTEMPTY: Attempt to remove a directory that isn't empty.
EOK: Successful completion or there was already a newattr entry.
EPERM: The group ID or owner ID didn't match.
EROFS: Attempt to remove an entry on a read-only filesystem.

Классификация:

ЗОСРВ «Нейтрино»

Точка остановки потока: Нет
Обработчик прерываний: Нет
Обработчик сигналов: Да
В потоке: Да

Тематические ссылки:

struct _client_info, io_rename_t, struct _io_connect, struct _io_connect_link_reply, struct _io_connect_ftype_reply, iofunc_client_info(), iofunc_open(), resmgr_context_t

Предыдущий раздел: Описание API системной библиотеки