diff options
Diffstat (limited to 'sysdeps/mach/hurd/sendmsg.c')
| -rw-r--r-- | sysdeps/mach/hurd/sendmsg.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/sendmsg.c b/sysdeps/mach/hurd/sendmsg.c index 796e728824..4774a5c3ee 100644 --- a/sysdeps/mach/hurd/sendmsg.c +++ b/sysdeps/mach/hurd/sendmsg.c @@ -112,6 +112,8 @@ __libc_sendmsg (int fd, const struct msghdr *message, int flags) if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) nports += (cmsg->cmsg_len - CMSG_ALIGN (sizeof (struct cmsghdr))) / sizeof (int); + else if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_CREDS) + nports++; if (nports) ports = __alloca (nports * sizeof (mach_port_t)); @@ -146,6 +148,38 @@ __libc_sendmsg (int fd, const struct msghdr *message, int flags) goto out; } } + else if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_CREDS) + { + /* SCM_CREDS support: send credentials. */ + mach_port_t rendezvous = __mach_reply_port (), reply; + struct cmsgcred *ucredp; + + err = mach_port_insert_right (mach_task_self (), rendezvous, + rendezvous, MACH_MSG_TYPE_MAKE_SEND); + ports[nports++] = rendezvous; + if (err) + goto out; + + ucredp = (struct cmsgcred *) CMSG_DATA(cmsg); + /* Fill in credentials data */ + ucredp->cmcred_pid = __getpid(); + ucredp->cmcred_uid = __getuid(); + ucredp->cmcred_euid = __geteuid(); + ucredp->cmcred_gid = __getgid(); + ucredp->cmcred_ngroups = + __getgroups (sizeof (ucredp->cmcred_groups) / sizeof (gid_t), + ucredp->cmcred_groups); + + /* And make auth server authenticate us. */ + reply = __mach_reply_port(); + err = __USEPORT + (AUTH, __auth_user_authenticate_request (port, + reply, MACH_MSG_TYPE_MAKE_SEND_ONCE, + rendezvous, MACH_MSG_TYPE_MAKE_SEND)); + mach_port_deallocate (__mach_task_self (), reply); + if (err) + goto out; + } } if (addr) |