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authorPaul E. Murphy <murphyp@linux.vnet.ibm.com>2016-01-19 13:42:44 -0600
committerTulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>2016-01-22 14:21:03 -0200
commitfad7e4d70665a228f23761cdffe5da674ca768be (patch)
tree3dbe6a99840229ad79f5eb182487f2d555efee90 /nptl/tst-setuid3.c
parentaf8ea0f449af7d3847351a4a5bafcd435a22ac31 (diff)
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Fix nptl/tst-setuid3.c
pthread_barrier_wait can return either PTHREAD_BARRIER_SERIAL_THREAD or 0. Posix makes no guarantees about which thread return the unique value. Additionally, pthread_join was not called despite seemingly checking for the error.
Diffstat (limited to 'nptl/tst-setuid3.c')
-rw-r--r--nptl/tst-setuid3.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/nptl/tst-setuid3.c b/nptl/tst-setuid3.c
index e017934..40dbb2a 100644
--- a/nptl/tst-setuid3.c
+++ b/nptl/tst-setuid3.c
@@ -33,14 +33,21 @@ static pthread_barrier_t barrier2;
#define FAIL_ERR(fmt, ...) \
do { printf ("FAIL: " fmt ": %m\n", __VA_ARGS__); _exit (1); } while (0)
+/* True if x is not a successful return code from pthread_barrier_wait. */
+static inline bool
+is_invalid_barrier_ret (int x)
+{
+ return x != 0 && x != PTHREAD_BARRIER_SERIAL_THREAD;
+}
+
static void *
thread_func (void *ctx __attribute__ ((unused)))
{
int ret = pthread_barrier_wait (&barrier1);
- if (ret != PTHREAD_BARRIER_SERIAL_THREAD && ret != 0)
+ if (is_invalid_barrier_ret (ret))
FAIL ("pthread_barrier_wait (barrier1) (on thread): %d", ret);
ret = pthread_barrier_wait (&barrier2);
- if (ret != PTHREAD_BARRIER_SERIAL_THREAD && ret != 0)
+ if (is_invalid_barrier_ret (ret))
FAIL ("pthread_barrier_wait (barrier2) (on thread): %d", ret);
return NULL;
}
@@ -86,7 +93,7 @@ do_test (void)
/* Ensure that the thread is running properly. */
ret = pthread_barrier_wait (&barrier1);
- if (ret != 0)
+ if (is_invalid_barrier_ret (ret))
FAIL ("pthread_barrier_wait (barrier1): %d", ret);
setuid_failure (2);
@@ -97,10 +104,11 @@ do_test (void)
/* Shutdown. */
ret = pthread_barrier_wait (&barrier2);
- if (ret != PTHREAD_BARRIER_SERIAL_THREAD && ret != 0)
+ if (is_invalid_barrier_ret (ret))
FAIL ("pthread_barrier_wait (barrier2): %d", ret);
- if (ret != PTHREAD_BARRIER_SERIAL_THREAD && ret != 0)
+ ret = pthread_join (thread, NULL);
+ if (ret != 0)
FAIL ("pthread_join: %d", ret);
return 0;