26 lines
874 B
Diff
26 lines
874 B
Diff
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Index: xen-4.1.0-testing/tools/console/client/main.c
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===================================================================
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--- xen-4.1.0-testing.orig/tools/console/client/main.c
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+++ xen-4.1.0-testing/tools/console/client/main.c
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@@ -96,6 +96,7 @@ static int get_pty_fd(struct xs_handle *
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* Assumes there is already a watch set in the store for this path. */
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{
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struct timeval tv;
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+ struct flock lock;
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fd_set watch_fdset;
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int xs_fd = xs_fileno(xs), pty_fd = -1;
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int start, now;
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@@ -122,6 +123,12 @@ static int get_pty_fd(struct xs_handle *
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if (pty_fd == -1)
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err(errno, "Could not open tty `%s'",
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pty_path);
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+ memset(&lock, 0, sizeof(lock));
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+ lock.l_type = F_WRLCK;
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+ lock.l_whence = SEEK_SET;
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+ if (fcntl(pty_fd, F_SETLK, &lock) != 0)
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+ err(errno, "Could not lock tty '%s'",
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+ pty_path);
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free(pty_path);
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}
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}
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