xpmem: support for fork()

refs #925

test/mng_mod/issues/925/CT_002.c

@@ -0,0 +1,100 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <xpmem.h>
+
+#define TEST_NAME "CT_002"
+#define CHKANDJUMP(cond, ...)							\
+	do {												\
+		if (cond) {										\
+			fprintf(stderr, " [NG] ");					\
+			fprintf(stderr, __VA_ARGS__);				\
+			fprintf(stderr, " failed\n");				\
+			goto fn_fail;								\
+		}												\
+	} while(0);
+
+#define OKNG(cond, ...)									\
+	do {												\
+		if (cond) {										\
+			CHKANDJUMP(cond, __VA_ARGS__);				\
+		} else {										\
+			fprintf(stdout, " [OK] ");					\
+			fprintf(stdout, __VA_ARGS__);				\
+			fprintf(stdout, "\n");						\
+		}												\
+	} while(0);
+			
+
+#define SZ_MEM 4 * (1ULL << 10)
+#define TEST_VAL 0x1129
+
+int main(int argc, char** argv) {
+	void *mem, *attach;
+	int rc = 0;
+	int status;
+	pid_t pid;
+	xpmem_segid_t segid;
+	xpmem_apid_t apid;
+	struct xpmem_addr addr;
+
+	printf("*** %s start *******************************\n", TEST_NAME);
+
+	mem = mmap(0, SZ_MEM, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+	CHKANDJUMP(mem == NULL, "mmap");
+	memset(mem, 0, SZ_MEM);
+
+	fflush(0);
+	pid = fork();
+	CHKANDJUMP(pid == -1, "fork failed\n");
+
+	if (pid == 0) {
+		/* Child process */
+		rc = xpmem_init();
+		CHKANDJUMP(rc != 0, "xpmem_init in child");
+
+		segid = xpmem_make(mem, SZ_MEM, XPMEM_PERMIT_MODE, (void*)0666);
+		OKNG(segid == -1, "xpmem_make in child");
+
+		apid = xpmem_get(segid, XPMEM_RDWR, XPMEM_PERMIT_MODE, NULL);
+		OKNG(apid == -1, "xpmem_get in child");
+
+		addr.apid = apid;
+		addr.offset = 0;
+		attach = xpmem_attach(addr, SZ_MEM, NULL);
+		OKNG(attach == (void*)-1, "xpmem_attach in child");
+
+		//*((unsigned long*)attach) = TEST_VAL;
+
+		rc = xpmem_detach(attach);
+		OKNG(rc == -1, "xpmem_detach in child");
+
+		rc = xpmem_remove(segid);
+		OKNG(rc == -1, "xpmem_remove in child");
+
+		//OKNG(*((unsigned long*)mem) != TEST_VAL, "validate TEST_VAL");
+
+		fflush(0);
+		_exit(0);
+	} else {
+		/* Parent process */
+		rc = waitpid(pid, &status, 0);
+		CHKANDJUMP(rc == -1, "waitpid failed\n");
+	}
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}