Attachment 947515 Details for Bug 1076959 – test2.c

test2.c

test2.c (text/plain), 1017 bytes, created by Michal Privoznik on 2014-10-16 08:45:25 UTC

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Creator: Michal Privoznik

Created: 2014-10-16 08:45:25 UTC

Size: 1017 bytes

patch

obsolete

>/*
> * Small /dev/kvm inspection program
> *
> * gcc test2.c -o test2 && ./test2
> */
>
>#include <stdio.h>
>#include <linux/kvm.h>
>#include <sys/types.h>
>#include <sys/stat.h>
>#include <fcntl.h>
>#include <errno.h>
>#include <string.h>
>#include <stdlib.h>
>
>int main(void)
>{
>    int ret = EXIT_FAILURE;
>    int kvmfd = -1;
>    int ioctlret;
>
>    printf("Trying to open /dev/kvm ...");
>    fflush(stdout);
>
>    if ((kvmfd = open("/dev/kvm", O_RDONLY)) < 0) {
>        printf(" failed kvmfd=%d errno=%s\n", kvmfd, strerror(errno));
>        goto cleanup;
>    }
>
>    printf(" success kvmfd=%d\n", kvmfd);
>
>    printf("Querying KVM_CAP_IOMMU ...");
>    fflush(stdout);
>
>#ifdef KVM_CAP_IOMMU
>    if ((ioctlret = ioctl(kvmfd, KVM_CHECK_EXTENSION, KVM_CAP_IOMMU)) <= 0) {
>        printf(" failed, ioctl ret=%d\n", ioctlret);
>        goto cleanup;
>    }
>
>    printf(" success ioctlret=%d\n", ioctlret);
>    ret = EXIT_SUCCESS;
>#else
>    printf(" failed KVM_CAP_IOMMU undefined\n");
>#endif
>
> cleanup:
>    close(kvmfd);
>    return ret;
>}

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Attachments on bug 1076959: 947515