Move source files into src subdirectory

* src/Makefile.am: New file.
* src/.gitignore: Likewise.
* scno.am: Move into src subdirectory.
* scno.head: Likewise.
* strace-graph: Likewise.
* strace-log-merge: Likewise.
* linux/: Likewise.
* types/: Likewise.
* xlat/: Likewise.
* *.awk: Likewise.
* *.c: Likewise.
* *.h: Likewise.
* *.sh: Likewise.
* .gitignore: Update.
* Makefile.am: Update.
* bootstrap: Update.
* configure.ac: Update.
* debian/rules: Update.
* debian/strace-udeb.install: Update.
* debian/strace.examples: Update.
* debian/strace.install: Update.
* debian/strace64.install: Update.
* m4/gen_bpf_attr_m4.sh: Update.
* m4/mpers.m4: Update.
* tests/Makefile.am: Update.
* tests/init.sh: Update.
* tests/legacy_syscall_info.test: Update.
* tests/strace-log-merge-error.test: Update.
* tests/strace-log-merge-suffix.test: Update.

1 files changed, 111 insertions, 0 deletions

diff --git a/src/epoll.c b/src/epoll.c
new file mode 100644
index 000000000..d87e0b8bc
--- /dev/null
+++ b/src/epoll.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2004-2007 Ulrich Drepper <drepper@redhat.com>
+ * Copyright (c) 2004 Roland McGrath <roland@redhat.com>
+ * Copyright (c) 2005-2015 Dmitry V. Levin <ldv@strace.io>
+ * Copyright (c) 2015-2018 The strace developers.
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include "defs.h"
+#include <fcntl.h>
+#include <sys/epoll.h>
+
+SYS_FUNC(epoll_create)
+{
+	tprintf("%d", (int) tcp->u_arg[0]);
+
+	return RVAL_DECODED | RVAL_FD;
+}
+
+#include "xlat/epollflags.h"
+
+SYS_FUNC(epoll_create1)
+{
+	printflags(epollflags, tcp->u_arg[0], "EPOLL_???");
+
+	return RVAL_DECODED | RVAL_FD;
+}
+
+#include "xlat/epollevents.h"
+
+static void
+print_epoll_data(const epoll_data_t data)
+{
+	/*
+	 * We cannot know what format the tracee uses, so
+	 * print both u32 and u66 which will cover every value.
+	 */
+	tprint_struct_begin();
+	PRINT_FIELD_U(data, u32);
+	tprint_struct_next();
+	PRINT_FIELD_U(data, u64);
+	tprint_struct_end();
+}
+
+static bool
+print_epoll_event(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
+{
+	const struct epoll_event *ev = elem_buf;
+
+	tprint_struct_begin();
+	PRINT_FIELD_FLAGS(*ev, events, epollevents, "EPOLL???");
+	tprint_struct_next();
+	PRINT_FIELD_OBJ_VAL(*ev, data, print_epoll_data);
+	tprint_struct_end();
+
+	return true;
+}
+
+#include "xlat/epollctls.h"
+
+SYS_FUNC(epoll_ctl)
+{
+	printfd(tcp, tcp->u_arg[0]);
+	tprints(", ");
+	const unsigned int op = tcp->u_arg[1];
+	printxval(epollctls, op, "EPOLL_CTL_???");
+	tprints(", ");
+	printfd(tcp, tcp->u_arg[2]);
+	tprints(", ");
+	struct epoll_event ev;
+	if (EPOLL_CTL_DEL == op)
+		printaddr(tcp->u_arg[3]);
+	else if (!umove_or_printaddr(tcp, tcp->u_arg[3], &ev))
+		print_epoll_event(tcp, &ev, sizeof(ev), 0);
+
+	return RVAL_DECODED;
+}
+
+static void
+epoll_wait_common(struct tcb *tcp)
+{
+	if (entering(tcp)) {
+		printfd(tcp, tcp->u_arg[0]);
+		tprints(", ");
+	} else {
+		struct epoll_event ev;
+		print_array(tcp, tcp->u_arg[1], tcp->u_rval, &ev, sizeof(ev),
+			    tfetch_mem, print_epoll_event, 0);
+		tprintf(", %d, %d", (int) tcp->u_arg[2], (int) tcp->u_arg[3]);
+	}
+}
+
+SYS_FUNC(epoll_wait)
+{
+	epoll_wait_common(tcp);
+	return 0;
+}
+
+SYS_FUNC(epoll_pwait)
+{
+	epoll_wait_common(tcp);
+	if (exiting(tcp)) {
+		tprints(", ");
+		/* NB: kernel requires arg[5] == NSIG_BYTES */
+		print_sigset_addr_len(tcp, tcp->u_arg[4], tcp->u_arg[5]);
+		tprintf(", %" PRI_klu, tcp->u_arg[5]);
+	}
+	return 0;
+}