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migration/qemu-file: add utility methods for working with seekable channels

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Add utility methods that will be needed when implementing 'mapped-ram'
migration capability.

Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: "Daniel P. Berrangé" <berrange@redhat.com>
Link: https://lore.kernel.org/r/20240229153017.2221-7-farosas@suse.de
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Fabiano Rosas 2024-02-29 12:30:00 -03:00 • committed by Peter Xu
parent c05dfcb7f2
commit 7f5b50a401
3 changed files with 114 additions and 0 deletions
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6
migration/qemu-file.h
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@ -75,6 +75,12 @@ QEMUFile *qemu_file_get_return_path(QEMUFile *f);
int qemu_fflush(QEMUFile *f);
void qemu_file_set_blocking(QEMUFile *f, bool block);
int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size);
void qemu_set_offset(QEMUFile *f, off_t off, int whence);
off_t qemu_get_offset(QEMUFile *f);
void qemu_put_buffer_at(QEMUFile *f, const uint8_t *buf, size_t buflen,
off_t pos);
size_t qemu_get_buffer_at(QEMUFile *f, const uint8_t *buf, size_t buflen,
off_t pos);
QIOChannel *qemu_file_get_ioc(QEMUFile *file);