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kfraser@localhost.localdomain
b65f717688
version which uses strerror_r(), and tries to cope with the POSIX and GNU versions of that function. Signed-off-by: Keir Fraser <keir@xensource.com>
159 lines
4.0 KiB
C
159 lines
4.0 KiB
C
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#ifndef XC_PRIVATE_H
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#define XC_PRIVATE_H
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#include <unistd.h>
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#include <stdio.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include "xenctrl.h"
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#include <xen/sys/privcmd.h>
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/* valgrind cannot see when a hypercall has filled in some values. For this
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reason, we must zero the privcmd_hypercall_t or domctl/sysctl instance
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before a call, if using valgrind. */
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#ifdef VALGRIND
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#define DECLARE_HYPERCALL privcmd_hypercall_t hypercall = { 0 }
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#define DECLARE_DOMCTL struct xen_domctl domctl = { 0 }
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#define DECLARE_SYSCTL struct xen_sysctl sysctl = { 0 }
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#else
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#define DECLARE_HYPERCALL privcmd_hypercall_t hypercall
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#define DECLARE_DOMCTL struct xen_domctl domctl
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#define DECLARE_SYSCTL struct xen_sysctl sysctl
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#endif
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#undef PAGE_SHIFT
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#undef PAGE_SIZE
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#undef PAGE_MASK
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#define PAGE_SHIFT XC_PAGE_SHIFT
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#define PAGE_SIZE (1UL << PAGE_SHIFT)
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#define PAGE_MASK (~(PAGE_SIZE-1))
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#define DEBUG 1
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#define INFO 1
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#define PROGRESS 0
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#if INFO
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#define IPRINTF(_f, _a...) printf(_f , ## _a)
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#else
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#define IPRINTF(_f, _a...) ((void)0)
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#endif
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#if DEBUG
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#define DPRINTF(_f, _a...) fprintf(stderr, _f , ## _a)
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#else
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#define DPRINTF(_f, _a...) ((void)0)
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#endif
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#if PROGRESS
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#define PPRINTF(_f, _a...) fprintf(stderr, _f , ## _a)
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#else
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#define PPRINTF(_f, _a...)
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#endif
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char *safe_strerror(int errcode);
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void xc_set_error(int code, const char *fmt, ...);
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#define ERROR(_m, _a...) xc_set_error(XC_INTERNAL_ERROR, _m , ## _a )
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#define PERROR(_m, _a...) xc_set_error(XC_INTERNAL_ERROR, _m " (%d = %s)", \
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## _a , errno, safe_strerror(errno))
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int lock_pages(void *addr, size_t len);
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void unlock_pages(void *addr, size_t len);
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static inline void safe_munlock(const void *addr, size_t len)
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{
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int saved_errno = errno;
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(void)munlock(addr, len);
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errno = saved_errno;
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}
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int do_xen_hypercall(int xc_handle, privcmd_hypercall_t *hypercall);
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static inline int do_xen_version(int xc_handle, int cmd, void *dest)
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{
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DECLARE_HYPERCALL;
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hypercall.op = __HYPERVISOR_xen_version;
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hypercall.arg[0] = (unsigned long) cmd;
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hypercall.arg[1] = (unsigned long) dest;
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return do_xen_hypercall(xc_handle, &hypercall);
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}
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static inline int do_domctl(int xc_handle, struct xen_domctl *domctl)
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{
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int ret = -1;
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DECLARE_HYPERCALL;
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domctl->interface_version = XEN_DOMCTL_INTERFACE_VERSION;
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hypercall.op = __HYPERVISOR_domctl;
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hypercall.arg[0] = (unsigned long)domctl;
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if ( lock_pages(domctl, sizeof(*domctl)) != 0 )
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{
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PERROR("Could not lock memory for Xen hypercall");
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goto out1;
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}
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if ( (ret = do_xen_hypercall(xc_handle, &hypercall)) < 0 )
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{
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if ( errno == EACCES )
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DPRINTF("domctl operation failed -- need to"
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" rebuild the user-space tool set?\n");
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}
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unlock_pages(domctl, sizeof(*domctl));
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out1:
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return ret;
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}
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static inline int do_sysctl(int xc_handle, struct xen_sysctl *sysctl)
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{
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int ret = -1;
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DECLARE_HYPERCALL;
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sysctl->interface_version = XEN_SYSCTL_INTERFACE_VERSION;
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hypercall.op = __HYPERVISOR_sysctl;
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hypercall.arg[0] = (unsigned long)sysctl;
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if ( lock_pages(sysctl, sizeof(*sysctl)) != 0 )
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{
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PERROR("Could not lock memory for Xen hypercall");
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goto out1;
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}
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if ( (ret = do_xen_hypercall(xc_handle, &hypercall)) < 0 )
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{
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if ( errno == EACCES )
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DPRINTF("sysctl operation failed -- need to"
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" rebuild the user-space tool set?\n");
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}
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unlock_pages(sysctl, sizeof(*sysctl));
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out1:
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return ret;
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}
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int xc_map_foreign_ranges(int xc_handle, uint32_t dom,
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privcmd_mmap_entry_t *entries, int nr);
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void *map_domain_va_core(unsigned long domfd, int cpu, void *guest_va,
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vcpu_guest_context_t *ctxt);
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int xc_waitdomain_core(int xc_handle, int domain, int *status,
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int options, vcpu_guest_context_t *ctxt);
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#endif /* __XC_PRIVATE_H__ */
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