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-rw-r--r--src/bus.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/bus.c b/src/bus.c
index 25bfbd8..ff2abeb 100644
--- a/src/bus.c
+++ b/src/bus.c
@@ -595,6 +595,7 @@ bus_close(bus_t *bus)
t(close_shared_memory(bus));
bus->message = NULL;
return 0;
+
fail:
return -1;
}
@@ -622,6 +623,7 @@ bus_write(const bus_t *bus, const char *message)
t(acquire_semaphore(bus, N, SEM_UNDO)); state--;
t(release_semaphore(bus, X, SEM_UNDO));
return 0;
+
fail:
saved_errno = errno;
if (state > 0)
@@ -674,6 +676,7 @@ bus_read(const bus_t *bus, int (*callback)(const char *message, void *user_data)
t(release_semaphore(bus, S, SEM_UNDO)); state--;
t(acquire_semaphore(bus, W, SEM_UNDO)); state--;
}
+
fail:
saved_errno = errno;
if (state > 1)
@@ -722,6 +725,7 @@ bus_poll(bus_t *bus)
t(release_semaphore(bus, Q, 0));
t(zero_semaphore(bus, Q, 0));
return bus->message;
+
fail:
saved_errno = errno;
if (state > 1)