Method
GioFilecreate_readwrite
Declaration
GFileIOStream*
g_file_create_readwrite (
GFile* file,
GFileCreateFlags flags,
GCancellable* cancellable,
GError** error
)
Description
Creates a new file and returns a stream for reading and writing to it. The file must not already exist.
By default files created are generally readable by everyone,
but if you pass G_FILE_CREATE_PRIVATE
in flags
the file
will be made readable only to the current user, to the level
that is supported on the target filesystem.
If cancellable
is not NULL
, then the operation can be cancelled
by triggering the cancellable object from another thread. If the
operation was cancelled, the error G_IO_ERROR_CANCELLED
will be returned.
If a file or directory with this name already exists, the
G_IO_ERROR_EXISTS
error will be returned. Some file systems don’t
allow all file names, and may return an G_IO_ERROR_INVALID_FILENAME
error, and if the name is too long, G_IO_ERROR_FILENAME_TOO_LONG
will be returned. Other errors are possible too, and depend on what
kind of filesystem the file is on.
Note that in many non-local file cases read and write streams are not supported, so make sure you really need to do read and write streaming, rather than just opening for reading or writing.
Available since: | 2.22 |
Parameters
flags |
GFileCreateFlags |
A set of |
|
cancellable |
GCancellable |
Optional |
|
The argument can be NULL . | |
The data is owned by the caller of the function. | |
error |
GError ** |
The return location for a GError* , or NULL . |
Return value
Returns: | GFileIOStream |
A |
|
The caller of the method takes ownership of the data, and is responsible for freeing it. |