X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Futils.c;h=b345100ea0fa5ad6517d28c72cbc53a5bd87e391;hb=c138a39bf483662d3aa07bf4740f265a1f1c0f13;hp=d0f050c0ff14d12e79f4f36d2e7adddb807e341d;hpb=00a52467faf94a4f07cfcc2fe3c9590d9cff3872;p=lttng-tools.git

diff --git a/src/common/utils.c b/src/common/utils.c
index d0f050c0f..b345100ea 100644
--- a/src/common/utils.c
+++ b/src/common/utils.c
@@ -142,6 +142,48 @@ error:
 	return ret;
 }
 
+/*
+ * Create pipe and set fd flags to FD_CLOEXEC and O_NONBLOCK.
+ *
+ * Make sure the pipe opened by this function are closed at some point. Use
+ * utils_close_pipe(). Using pipe() and fcntl rather than pipe2() to
+ * support OSes other than Linux 2.6.23+.
+ */
+LTTNG_HIDDEN
+int utils_create_pipe_cloexec_nonblock(int *dst)
+{
+	int ret, i;
+
+	if (dst == NULL) {
+		return -1;
+	}
+
+	ret = utils_create_pipe(dst);
+	if (ret < 0) {
+		goto error;
+	}
+
+	for (i = 0; i < 2; i++) {
+		ret = fcntl(dst[i], F_SETFD, FD_CLOEXEC);
+		if (ret < 0) {
+			PERROR("fcntl pipe cloexec");
+			goto error;
+		}
+		/*
+		 * Note: we override any flag that could have been
+		 * previously set on the fd.
+		 */
+		ret = fcntl(dst[i], F_SETFL, O_NONBLOCK);
+		if (ret < 0) {
+			PERROR("fcntl pipe nonblock");
+			goto error;
+		}
+	}
+
+error:
+	return ret;
+}
+
 /*
  * Close both read and write side of the pipe.
  */
@@ -597,3 +639,30 @@ char *utils_get_home_dir(void)
 	}
 	return getenv(DEFAULT_LTTNG_FALLBACK_HOME_ENV_VAR);
 }
+
+/*
+ * With the given format, fill dst with the time of len maximum siz.
+ *
+ * Return amount of bytes set in the buffer or else 0 on error.
+ */
+LTTNG_HIDDEN
+size_t utils_get_current_time_str(const char *format, char *dst, size_t len)
+{
+	size_t ret;
+	time_t rawtime;
+	struct tm *timeinfo;
+
+	assert(format);
+	assert(dst);
+
+	/* Get date and time for session path */
+	time(&rawtime);
+	timeinfo = localtime(&rawtime);
+	ret = strftime(dst, len, format, timeinfo);
+	if (ret == 0) {
+		ERR("Unable to strftime with format %s at dst %p of len %lu", format,
+				dst, len);
+	}
+
+	return ret;
+}