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xen
xenconsole-no-multiple-connections.patch
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File xenconsole-no-multiple-connections.patch of Package xen
Index: xen-4.17.0-testing/tools/console/client/main.c =================================================================== --- xen-4.17.0-testing.orig/tools/console/client/main.c +++ xen-4.17.0-testing/tools/console/client/main.c @@ -100,6 +100,7 @@ static int get_pty_fd(struct xs_handle * * Assumes there is already a watch set in the store for this path. */ { struct timeval tv; + struct flock lock; fd_set watch_fdset; int xs_fd = xs_fileno(xs), pty_fd = -1; time_t start, now; @@ -123,6 +124,14 @@ static int get_pty_fd(struct xs_handle * pty_fd = open(pty_path, O_RDWR | O_NOCTTY); if (pty_fd == -1) warn("Could not open tty `%s'", pty_path); + else { + memset(&lock, 0, sizeof(lock)); + lock.l_type = F_WRLCK; + lock.l_whence = SEEK_SET; + if (fcntl(pty_fd, F_SETLK, &lock) != 0) + err(errno, "Could not lock tty '%s'", + pty_path); + } } free(pty_path); }
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