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io: Introduce qio_channel_file_new_dupfd

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Add a new helper function for creating a QIOChannelFile channel with a
duplicated file descriptor. This saves the calling code from having to
do error checking on the dup() call.

Suggested-by: "Daniel P. Berrangé" <berrange@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: "Daniel P. Berrangé" <berrange@redhat.com>
Link: https://lore.kernel.org/r/20240311233335.17299-2-farosas@suse.de
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Fabiano Rosas 2024-03-11 20:33:34 -03:00 • committed by Peter Xu
parent 35ac6831d9
commit 4760cedc61
2 changed files with 30 additions and 0 deletions
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18
include/io/channel-file.h
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@ -68,6 +68,24 @@ struct QIOChannelFile {
QIOChannelFile *
qio_channel_file_new_fd(int fd);
/**
* qio_channel_file_new_dupfd:
* @fd: the file descriptor
* @errp: pointer to initialized error object
*
* Create a new IO channel object for a file represented by the @fd
* parameter. Like qio_channel_file_new_fd(), but the @fd is first
* duplicated with dup().
*
* The channel will own the duplicated file descriptor and will take
* responsibility for closing it, the original FD is owned by the
* caller.
*
* Returns: the new channel object
*/
QIOChannelFile *
qio_channel_file_new_dupfd(int fd, Error **errp);
/**
* qio_channel_file_new_path:
* @path: the file path