nbdkit_peer_name, nbdkit_peer_pid, nbdkit_peer_uid, nbdkit_peer_gid, nbdkit_peer_security_context - get client address and information for nbdkit
#include <nbdkit-plugin.h>
int nbdkit_peer_name (struct sockaddr *addr, socklen_t *addrlen);
int64_t nbdkit_peer_pid (void);
int64_t nbdkit_peer_uid (void);
int64_t nbdkit_peer_gid (void);
char *nbdkit_peer_security_context (void);Return the peer (client) address, if available. The addr and addrlen parameters behave like getpeername(2). In particular you must initialize addrlen with the size of the buffer pointed to by addr, and if addr is not large enough then the address will be truncated.
In some cases this is not available or the address returned will be meaningless (eg. if there is a proxy between the client and nbdkit). This call uses thread-local magic so no parameter is required to specify the current connection.
(nbdkit ≥ 1.24, Linux only)
Return the peer process ID. This is only available when the client connected over a Unix domain socket.
(nbdkit ≥ 1.24)
Return the peer user ID. This is only available when the client connected over a Unix domain socket.
(nbdkit ≥ 1.24)
Return the peer group ID. This is only available when the client connected over a Unix domain socket.
(nbdkit ≥ 1.36, not Windows)
Return the peer security context (usually the SELinux label, IPSEC label or NetLabel). See the description of SO_PEERSEC in unix(7) and ip(7).
All functions except nbdkit_peer_security_context return 0 on success. If there is an error they call nbdkit_error(3) and return -1.
nbdkit_peer_security_context returns a security context as a string on success. The caller must free this string. On error (which can include missing label or unsupported protocol), nbdkit_error(3) is called and this call returns NULL.
NBDKit.peer_name : unit -> Unix.sockaddr
NBDKit.peer_pid : unit -> int64
NBDKit.peer_uid : unit -> int64
NBDKit.peer_gid : unit -> int64
NBDKit.peer_security_context : unit -> string import nbdkit
pid = nbdkit.peer_pid()
uid = nbdkit.peer_uid()
gid = nbdkit.peer_gid()
security_context = nbdkit.peer_security_context() use nbdkit::*;
pub fn peername<T: SockaddrLike>() ->
std::result::Result<T, Box<dyn error::Error>>nbdkit_peer_name was added in nbdkit 1.16.
nbdkit_peer_pid, nbdkit_peer_uid and nbdkit_peer_gid were added in nbdkit 1.24.
nbdkit_peer_security_context was added in nbdkit 1.36.
nbdkit(1), nbdkit-plugin(3), nbdkit-filter(3), nbdkit-ip-filter(1), getpeername(2), unix(7), ip(7).
Richard W.M. Jones
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