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kafs/sys-linux.c  view on Meta::CPAN

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

/* 
 * The struct passed to ioctl to do an AFS system call.  Definition taken from
 * the afs/afs_args.h OpenAFS header.
 */
struct afsprocdata {
    long param4;
    long param3;
    long param2;
    long param1;
    long syscall;
};


/*
 * The workhorse function that does the actual system call.  All the values

kafs/sys-linux.c  view on Meta::CPAN

 * by Arla (at least some versions).
 *
 * Returns -1 and sets errno to ENOSYS if attempting a system call fails and 0
 * otherwise.  If the system call was made, its return status will be stored
 * in rval.
 */
static int
k_syscall(long call, long param1, long param2, long param3, long param4,
          int *rval)
{
    struct afsprocdata syscall_data;
    int fd, oerrno;

    fd = open("/proc/fs/openafs/afs_ioctl", O_RDWR);
    if (fd < 0)
        fd = open("/proc/fs/nnpfs/afs_ioctl", O_RDWR);
    if (fd < 0) {
        errno = ENOSYS;
        return -1;
    }