From 95fa0c79a04f3ebebb9f3b68cc05b4b8082b5444 Mon Sep 17 00:00:00 2001 From: Anthony Harivel Date: Wed, 22 May 2024 17:34:50 +0200 Subject: qio: add support for SO_PEERCRED for socket channel The function qio_channel_get_peercred() returns a pointer to the credentials of the peer process connected to this socket. This credentials structure is defined in as follows: struct ucred { pid_t pid; /* Process ID of the sending process */ uid_t uid; /* User ID of the sending process */ gid_t gid; /* Group ID of the sending process */ }; The use of this function is possible only for connected AF_UNIX stream sockets and for AF_UNIX stream and datagram socket pairs. On platform other than Linux, the function return 0. Signed-off-by: Anthony Harivel Link: https://lore.kernel.org/r/20240522153453.1230389-2-aharivel@redhat.com Signed-off-by: Paolo Bonzini --- include/io/channel.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/io/channel.h') diff --git a/include/io/channel.h b/include/io/channel.h index 7986c49..bdf0bca 100644 --- a/include/io/channel.h +++ b/include/io/channel.h @@ -160,6 +160,9 @@ struct QIOChannelClass { void *opaque); int (*io_flush)(QIOChannel *ioc, Error **errp); + int (*io_peerpid)(QIOChannel *ioc, + unsigned int *pid, + Error **errp); }; /* General I/O handling functions */ @@ -981,4 +984,22 @@ int coroutine_mixed_fn qio_channel_writev_full_all(QIOChannel *ioc, int qio_channel_flush(QIOChannel *ioc, Error **errp); +/** + * qio_channel_get_peercred: + * @ioc: the channel object + * @pid: pointer to pid + * @errp: pointer to a NULL-initialized error object + * + * Returns the pid of the peer process connected to this socket. + * + * The use of this function is possible only for connected + * AF_UNIX stream sockets and for AF_UNIX stream and datagram + * socket pairs on Linux. + * Return -1 on error with pid -1 for the non-Linux OS. + * + */ +int qio_channel_get_peerpid(QIOChannel *ioc, + unsigned int *pid, + Error **errp); + #endif /* QIO_CHANNEL_H */ -- cgit v1.1