$NetBSD: patch-ab,v 1.3 2008/02/17 16:29:03 bouyer Exp $ --- libxc/xc_netbsd.c.orig 2008-02-17 15:12:36.000000000 +0100 +++ libxc/xc_netbsd.c 2008-02-17 15:20:03.000000000 +0100 @@ -0,0 +1,279 @@ +/****************************************************************************** + * + * Copyright 2006 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, version 2 of the + * License. + */ + +#include "xc_private.h" + +#include +#include +#include +#include + +int xc_interface_open(void) +{ + int flags, saved_errno; + int fd = open("/kern/xen/privcmd", O_RDWR); + + if ( fd == -1 ) + { + PERROR("Could not obtain handle on privileged command interface"); + return -1; + } + + /* Although we return the file handle as the 'xc handle' the API + does not specify / guarentee that this integer is in fact + a file handle. Thus we must take responsiblity to ensure + it doesn't propagate (ie leak) outside the process */ + if ( (flags = fcntl(fd, F_GETFD)) < 0 ) + { + PERROR("Could not get file handle flags"); + goto error; + } + flags |= FD_CLOEXEC; + if ( fcntl(fd, F_SETFD, flags) < 0 ) + { + PERROR("Could not set file handle flags"); + goto error; + } + + return fd; + + error: + saved_errno = errno; + close(fd); + errno = saved_errno; + return -1; +} + +int xc_interface_close(int xc_handle) +{ + return close(xc_handle); +} + +void *xc_map_foreign_batch(int xc_handle, uint32_t dom, int prot, + xen_pfn_t *arr, int num) +{ + privcmd_mmapbatch_t ioctlx; + void *addr; + addr = mmap(NULL, num*PAGE_SIZE, prot, MAP_ANON | MAP_SHARED, -1, 0); + if ( addr == MAP_FAILED ) + return NULL; + + ioctlx.num=num; + ioctlx.dom=dom; + ioctlx.addr=(unsigned long)addr; + ioctlx.arr=arr; + if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 ) + { + int saved_errno = errno; + perror("XXXXXXXX"); + (void)munmap(addr, num*PAGE_SIZE); + errno = saved_errno; + return NULL; + } + return addr; + +} + +void *xc_map_foreign_range(int xc_handle, uint32_t dom, + int size, int prot, + unsigned long mfn) +{ + privcmd_mmap_t ioctlx; + privcmd_mmap_entry_t entry; + void *addr; + addr = mmap(NULL, size, prot, MAP_ANON | MAP_SHARED, -1, 0); + if ( addr == MAP_FAILED ) + return NULL; + + ioctlx.num=1; + ioctlx.dom=dom; + ioctlx.entry=&entry; + entry.va=(unsigned long) addr; + entry.mfn=mfn; + entry.npages=(size+PAGE_SIZE-1)>>PAGE_SHIFT; + if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx) < 0 ) + { + int saved_errno = errno; + (void)munmap(addr, size); + errno = saved_errno; + return NULL; + } + return addr; +} + +int xc_map_foreign_ranges(int xc_handle, uint32_t dom, + privcmd_mmap_entry_t *entries, int nr) +{ + privcmd_mmap_t ioctlx; + int err; + + ioctlx.num = nr; + ioctlx.dom = dom; + ioctlx.entry = entries; + + err = ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx); + if (err == 0) + return 0; + else + return -errno; +} + +static int do_privcmd(int xc_handle, unsigned int cmd, unsigned long data) +{ + int err = ioctl(xc_handle, cmd, data); + if (err == 0) + return 0; + else + return -errno; +} + +int do_xen_hypercall(int xc_handle, privcmd_hypercall_t *hypercall) +{ +#ifdef __PKGSRC_PRIVCMD_H__ + /* old IOCTL */ + return do_privcmd(xc_handle, + IOCTL_PRIVCMD_HYPERCALL, + (unsigned long)hypercall); +#else + int error = do_privcmd(xc_handle, + IOCTL_PRIVCMD_HYPERCALL, + (unsigned long)hypercall); + if (error) + return error; + else + return (hypercall->retval); +#endif +} + +#define EVTCHN_DEV_NAME "/dev/xenevt" + +int xc_evtchn_open(void) +{ + return open(EVTCHN_DEV_NAME, O_NONBLOCK|O_RDWR); +} + +int xc_evtchn_close(int xce_handle) +{ + return close(xce_handle); +} + +int xc_evtchn_fd(int xce_handle) +{ + return xce_handle; +} + +int xc_evtchn_notify(int xce_handle, evtchn_port_t port) +{ + struct ioctl_evtchn_notify notify; + + notify.port = port; + + return ioctl(xce_handle, IOCTL_EVTCHN_NOTIFY, ¬ify); +} + +evtchn_port_or_error_t xc_evtchn_bind_interdomain(int xce_handle, int domid, + evtchn_port_t remote_port) +{ + struct ioctl_evtchn_bind_interdomain bind; + int ret; + + bind.remote_domain = domid; + bind.remote_port = remote_port; + + ret = ioctl(xce_handle, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind); + if (ret == 0) + return bind.port; + else + return -1; +} + +int xc_evtchn_unbind(int xce_handle, evtchn_port_t port) +{ + struct ioctl_evtchn_unbind unbind; + + unbind.port = port; + + return ioctl(xce_handle, IOCTL_EVTCHN_UNBIND, &unbind); +} + +evtchn_port_or_error_t xc_evtchn_bind_virq(int xce_handle, unsigned int virq) +{ + struct ioctl_evtchn_bind_virq bind; + int err; + + bind.virq = virq; + + err = ioctl(xce_handle, IOCTL_EVTCHN_BIND_VIRQ, &bind); + if (err) + return -1; + else + return bind.port; +} + +static int dorw(int fd, char *data, size_t size, int do_write) +{ + size_t offset = 0; + ssize_t len; + + while ( offset < size ) + { + if (do_write) + len = write(fd, data + offset, size - offset); + else + len = read(fd, data + offset, size - offset); + + if ( len == -1 ) + { + if ( errno == EINTR ) + continue; + return -1; + } + + offset += len; + } + + return 0; +} + +evtchn_port_or_error_t xc_evtchn_pending(int xce_handle) +{ + evtchn_port_t port; + + if ( dorw(xce_handle, (char *)&port, sizeof(port), 0) == -1 ) + return -1; + + return port; +} + +int xc_evtchn_unmask(int xce_handle, evtchn_port_t port) +{ + return dorw(xce_handle, (char *)&port, sizeof(port), 1); +} + +/* Optionally flush file to disk and discard page cache */ +void discard_file_cache(int fd, int flush) +{ + + if ( flush && (fsync(fd) < 0) ) + { + /*PERROR("Failed to flush file: %s", strerror(errno));*/ + } +} + +/* + * Local variables: + * mode: C + * c-set-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */