flock.c

Apache V2.0.15 Alpha For Linuxhttpd-2_0_15-alpha.tar.Z

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#include "fileio.h"

APR_DECLARE(apr_status_t) apr_file_lock(apr_file_t *thefile, int type)
{
    OVERLAPPED offset;
    DWORD flags, len = 0xffffffff;

    flags = ((type & APR_FLOCK_NONBLOCK) ? LOCKFILE_FAIL_IMMEDIATELY : 0)
          + (((type & APR_FLOCK_TYPEMASK) == APR_FLOCK_SHARED) 
                                       ? 0 : LOCKFILE_EXCLUSIVE_LOCK);
    memset (&offset, 0, sizeof(offset));
    /* Syntax is correct, len is passed for LengthLow and LengthHigh*/
    if (!LockFileEx(thefile->filehand, flags, 0, len, len, &offset))
        return apr_get_os_error();

    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_file_unlock(apr_file_t *thefile)
{
    OVERLAPPED offset;
    DWORD len = 0xffffffff;

    memset (&offset, 0, sizeof(offset));
    /* Syntax is correct, len is passed for LengthLow and LengthHigh*/
    if (!UnlockFileEx(thefile->filehand, 0, len, len, &offset))
        return apr_get_os_error();

    return APR_SUCCESS;
}