X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fntdb%2Ftest%2Fapi-82-lockattr.c;fp=ccan%2Fntdb%2Ftest%2Fapi-82-lockattr.c;h=f71600c182b4478a7cb5d1a7d1007a10c6ec9292;hp=0000000000000000000000000000000000000000;hb=d69ef83fcc2434ddaced1831184fb761ae6f09d3;hpb=ed95d8600afe1564ffd1783ae9ea0ef6324904dc

diff --git a/ccan/ntdb/test/api-82-lockattr.c b/ccan/ntdb/test/api-82-lockattr.c
new file mode 100644
index 00000000..f71600c1
--- /dev/null
+++ b/ccan/ntdb/test/api-82-lockattr.c
@@ -0,0 +1,237 @@
+#include "private.h" // for ntdb_fcntl_unlock
+#include "ntdb.h"
+#include "tap-interface.h"
+#include <errno.h>
+#include "logging.h"
+
+static int mylock(int fd, int rw, off_t off, off_t len, bool waitflag,
+		  void *_err)
+{
+	int *lock_err = _err;
+	struct flock fl;
+	int ret;
+
+	if (*lock_err) {
+		errno = *lock_err;
+		return -1;
+	}
+
+	do {
+		fl.l_type = rw;
+		fl.l_whence = SEEK_SET;
+		fl.l_start = off;
+		fl.l_len = len;
+
+		if (waitflag)
+			ret = fcntl(fd, F_SETLKW, &fl);
+		else
+			ret = fcntl(fd, F_SETLK, &fl);
+	} while (ret != 0 && errno == EINTR);
+
+	return ret;
+}
+
+static int trav_err;
+static int trav(struct ntdb_context *ntdb, NTDB_DATA k, NTDB_DATA d, int *terr)
+{
+	*terr = trav_err;
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	unsigned int i;
+	struct ntdb_context *ntdb;
+	int flags[] = { NTDB_DEFAULT, NTDB_NOMMAP,
+			NTDB_CONVERT, NTDB_NOMMAP|NTDB_CONVERT };
+	union ntdb_attribute lock_attr;
+	NTDB_DATA key = ntdb_mkdata("key", 3);
+	NTDB_DATA data = ntdb_mkdata("data", 4);
+	int lock_err;
+
+	lock_attr.base.attr = NTDB_ATTRIBUTE_FLOCK;
+	lock_attr.base.next = &tap_log_attr;
+	lock_attr.flock.lock = mylock;
+	lock_attr.flock.unlock = ntdb_fcntl_unlock;
+	lock_attr.flock.data = &lock_err;
+
+	plan_tests(sizeof(flags) / sizeof(flags[0]) * 81);
+
+	for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+		NTDB_DATA d;
+
+		/* Nonblocking open; expect no error message. */
+		lock_err = EAGAIN;
+		ntdb = ntdb_open("run-82-lockattr.ntdb", flags[i]|MAYBE_NOSYNC,
+				 O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
+		ok(errno == lock_err, "Errno is %u", errno);
+		ok1(!ntdb);
+		ok1(tap_log_messages == 0);
+
+		lock_err = EINTR;
+		ntdb = ntdb_open("run-82-lockattr.ntdb", flags[i]|MAYBE_NOSYNC,
+				 O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
+		ok(errno == lock_err, "Errno is %u", errno);
+		ok1(!ntdb);
+		ok1(tap_log_messages == 0);
+
+		/* Forced fail open. */
+		lock_err = ENOMEM;
+		ntdb = ntdb_open("run-82-lockattr.ntdb", flags[i]|MAYBE_NOSYNC,
+				 O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
+		ok1(errno == lock_err);
+		ok1(!ntdb);
+		ok1(tap_log_messages == 1);
+		tap_log_messages = 0;
+
+		lock_err = 0;
+		ntdb = ntdb_open("run-82-lockattr.ntdb", flags[i]|MAYBE_NOSYNC,
+				 O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
+		if (!ok1(ntdb))
+			continue;
+		ok1(tap_log_messages == 0);
+
+		/* Nonblocking store. */
+		lock_err = EAGAIN;
+		ok1(ntdb_store(ntdb, key, data, NTDB_REPLACE) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = EINTR;
+		ok1(ntdb_store(ntdb, key, data, NTDB_REPLACE) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = ENOMEM;
+		ok1(ntdb_store(ntdb, key, data, NTDB_REPLACE) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 1);
+		tap_log_messages = 0;
+
+		/* Nonblocking fetch. */
+		lock_err = EAGAIN;
+		ok1(!ntdb_exists(ntdb, key));
+		ok1(tap_log_messages == 0);
+		lock_err = EINTR;
+		ok1(!ntdb_exists(ntdb, key));
+		ok1(tap_log_messages == 0);
+		lock_err = ENOMEM;
+		ok1(!ntdb_exists(ntdb, key));
+		ok1(tap_log_messages == 1);
+		tap_log_messages = 0;
+
+		lock_err = EAGAIN;
+		ok1(ntdb_fetch(ntdb, key, &d) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = EINTR;
+		ok1(ntdb_fetch(ntdb, key, &d) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = ENOMEM;
+		ok1(ntdb_fetch(ntdb, key, &d) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 1);
+		tap_log_messages = 0;
+
+		/* Nonblocking delete. */
+		lock_err = EAGAIN;
+		ok1(ntdb_delete(ntdb, key) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = EINTR;
+		ok1(ntdb_delete(ntdb, key) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = ENOMEM;
+		ok1(ntdb_delete(ntdb, key) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 1);
+		tap_log_messages = 0;
+
+		/* Nonblocking locks. */
+		lock_err = EAGAIN;
+		ok1(ntdb_chainlock(ntdb, key) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = EINTR;
+		ok1(ntdb_chainlock(ntdb, key) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = ENOMEM;
+		ok1(ntdb_chainlock(ntdb, key) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 1);
+		tap_log_messages = 0;
+
+		lock_err = EAGAIN;
+		ok1(ntdb_chainlock_read(ntdb, key) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = EINTR;
+		ok1(ntdb_chainlock_read(ntdb, key) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = ENOMEM;
+		ok1(ntdb_chainlock_read(ntdb, key) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 1);
+		tap_log_messages = 0;
+
+		lock_err = EAGAIN;
+		ok1(ntdb_lockall(ntdb) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = EINTR;
+		ok1(ntdb_lockall(ntdb) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = ENOMEM;
+		ok1(ntdb_lockall(ntdb) == NTDB_ERR_LOCK);
+		/* This actually does divide and conquer. */
+		ok1(tap_log_messages > 0);
+		tap_log_messages = 0;
+
+		lock_err = EAGAIN;
+		ok1(ntdb_lockall_read(ntdb) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = EINTR;
+		ok1(ntdb_lockall_read(ntdb) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = ENOMEM;
+		ok1(ntdb_lockall_read(ntdb) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages > 0);
+		tap_log_messages = 0;
+
+		/* Nonblocking traverse; go nonblock partway through. */
+		lock_err = 0;
+		ok1(ntdb_store(ntdb, key, data, NTDB_REPLACE) == 0);
+		/* Need two entries to ensure two lock attempts! */
+		ok1(ntdb_store(ntdb, ntdb_mkdata("key2", 4), data,
+			       NTDB_REPLACE) == 0);
+		trav_err = EAGAIN;
+		ok1(ntdb_traverse(ntdb, trav, &lock_err) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		trav_err = EINTR;
+		lock_err = 0;
+		ok1(ntdb_traverse(ntdb, trav, &lock_err) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		trav_err = ENOMEM;
+		lock_err = 0;
+		ok1(ntdb_traverse(ntdb, trav, &lock_err) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 1);
+		tap_log_messages = 0;
+
+		/* Nonblocking transactions. */
+		lock_err = EAGAIN;
+		ok1(ntdb_transaction_start(ntdb) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = EINTR;
+		ok1(ntdb_transaction_start(ntdb) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+		lock_err = ENOMEM;
+		ok1(ntdb_transaction_start(ntdb) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 1);
+		tap_log_messages = 0;
+
+		/* Nonblocking transaction prepare. */
+		lock_err = 0;
+		ok1(ntdb_transaction_start(ntdb) == 0);
+		ok1(ntdb_delete(ntdb, key) == 0);
+
+		lock_err = EAGAIN;
+		ok1(ntdb_transaction_prepare_commit(ntdb) == NTDB_ERR_LOCK);
+		ok1(tap_log_messages == 0);
+
+		lock_err = 0;
+		ok1(ntdb_transaction_prepare_commit(ntdb) == 0);
+		ok1(ntdb_transaction_commit(ntdb) == 0);
+
+		/* And the transaction was committed, right? */
+		ok1(!ntdb_exists(ntdb, key));
+		ntdb_close(ntdb);
+		ok1(tap_log_messages == 0);
+	}
+	return exit_status();
+}