cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

passthrough_helpers.h (2043B)

      1/*
      2 * FUSE: Filesystem in Userspace
      3 *
      4 * Redistribution and use in source and binary forms, with or without
      5 * modification, are permitted provided that the following conditions
      6 * are met:
      7 * 1. Redistributions of source code must retain the above copyright
      8 *    notice, this list of conditions and the following disclaimer.
      9 * 2. Redistributions in binary form must reproduce the above copyright
     10 *    notice, this list of conditions and the following disclaimer in the
     11 *    documentation and/or other materials provided with the distribution.
     12 *
     13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     23 * SUCH DAMAGE
     24 */
     25
     26/*
     27 * Creates files on the underlying file system in response to a FUSE_MKNOD
     28 * operation
     29 */
     30static int mknod_wrapper(int dirfd, const char *path, const char *link,
     31                         int mode, dev_t rdev)
     32{
     33    int res;
     34
     35    if (S_ISREG(mode)) {
     36        res = openat(dirfd, path, O_CREAT | O_EXCL | O_WRONLY, mode);
     37        if (res >= 0) {
     38            res = close(res);
     39        }
     40    } else if (S_ISDIR(mode)) {
     41        res = mkdirat(dirfd, path, mode);
     42    } else if (S_ISLNK(mode) && link != NULL) {
     43        res = symlinkat(link, dirfd, path);
     44    } else if (S_ISFIFO(mode)) {
     45        res = mkfifoat(dirfd, path, mode);
     46    } else {
     47        res = mknodat(dirfd, path, mode, rdev);
     48    }
     49
     50    return res;
     51}