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| author | Peter Xu | 2018-06-08 05:55:11 +0200 |
|---|---|---|
| committer | Markus Armbruster | 2018-06-18 15:48:22 +0200 |
| commit | 474514668b47c9d2148b526e379ffbb6764d9a9e (patch) | |
| tree | 093a62a7cd6cf125fb9987e17574c58524df3aa8 /stubs | |
| parent | monitor: move init global earlier (diff) | |
| download | qemu-474514668b47c9d2148b526e379ffbb6764d9a9e.tar.gz qemu-474514668b47c9d2148b526e379ffbb6764d9a9e.tar.xz qemu-474514668b47c9d2148b526e379ffbb6764d9a9e.zip | |
monitor: add lock to protect mon_fdsets
Introduce a new global big lock for mon_fdsets. Take it where needed.
The monitor_fdset_get_fd() handling is a bit tricky: now we need to call
qemu_mutex_unlock() which might pollute errno, so we need to make sure
the correct errno be passed up to the callers. To make things simpler,
we let monitor_fdset_get_fd() return the -errno directly when error
happens, then in qemu_open() we move it back into errno.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180608035511.7439-8-peterx@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'stubs')
| -rw-r--r-- | stubs/fdset.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/stubs/fdset.c b/stubs/fdset.c index 6020cf28c8..4f3edf2ea4 100644 --- a/stubs/fdset.c +++ b/stubs/fdset.c @@ -14,7 +14,7 @@ int monitor_fdset_dup_fd_find(int dup_fd) int monitor_fdset_get_fd(int64_t fdset_id, int flags) { - return -1; + return -ENOENT; } void monitor_fdset_dup_fd_remove(int dupfd) |