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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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12
io/channel-file.c
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@ -45,6 +45,18 @@ qio_channel_file_new_fd(int fd)
return ioc;
}
QIOChannelFile *
qio_channel_file_new_dupfd(int fd, Error **errp)
{
int newfd = dup(fd);
if (newfd < 0) {
error_setg_errno(errp, errno, "Could not dup FD %d", fd);
return NULL;
}
return qio_channel_file_new_fd(newfd);
}
QIOChannelFile *
qio_channel_file_new_path(const char *path,