X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=src%2Flttng-syscalls.h;h=ce63973f8f6e430f8c09ca6a1d37ddd3eda3e7f6;hb=d4c1b1de04e5b67db563ed5dd3d229239720c3fb;hp=9a9d9173312fd9143872b6a882a62b82b5efff86;hpb=ebcc64cde7d40a8c9a57b410e209f012531975fe;p=lttng-modules.git

diff --git a/src/lttng-syscalls.h b/src/lttng-syscalls.h
index 9a9d9173..ce63973f 100644
--- a/src/lttng-syscalls.h
+++ b/src/lttng-syscalls.h
@@ -1,13 +1,90 @@
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
+ * lttng-syscalls.h
+ *
+ * LTTng syscall header.
+ *
+ * Copyright (C) 2021 Francis Deslauriers <francis.deslauriers@efficios.com>
+ */
+
 #ifndef LTTNG_SYSCALLS_H
 #define LTTNG_SYSCALLS_H
 
-#include <stddef.h>
+#include <asm/ptrace.h>
+#include <linux/compat.h>
+#include <linux/fcntl.h>
+#include <linux/in.h>
+#include <linux/in6.h>
+#include <linux/mman.h>
+#include <linux/posix_types.h>
 
 #include <lttng/events.h>
+#include <lttng/kernel-version.h>
+
+/*
+ * Forward declarations allowing LTTng to build its system call instrumentation
+ * against old kernels which do not declare the more recent system call
+ * argument structure types.
+ */
+struct clone_args;
+struct file_handle;
+struct futex_waitv;
+struct io_uring_params;
+struct mmap_arg_struct;
+struct mmsghdr;
+struct mount_attr;
+struct oldold_utsname;
+struct old_utsname;
+struct old_itimerspec32;
+struct old_timespec32;
+struct old_timeval32;
+struct old_timex32;
+struct old_utimbuf32;
+struct open_how;
+struct rlimit64;
+struct rseq;
+struct sched_attr;
+struct sel_arg_struct;
+struct statx;
+struct user_msghdr;
+
+struct __aio_sigset;
+struct __kernel_old_itimerval;
+struct __kernel_timespec;
+struct __kernel_timex;
+struct __kernel_old_timeval;
+struct __kernel_itimerspec;
+
+union bpf_attr;
+
+#ifndef __kernel_long_t
+typedef long __kernel_long_t;
+#endif
+
+typedef __kernel_long_t __kernel_old_time_t;
+typedef int __bitwise __kernel_rwf_t;
+typedef __kernel_rwf_t rwf_t;
+typedef s32 old_time32_t;
+
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
+/*
+ * Forward declaration and typedef for old types expected by MIPS and POWER
+ * system call instrumentation when building against kernel >= 5.6.0. To be
+ * removed after those system call instrumentation headers are regenerated
+ * against a recent kernel.
+ */
+typedef __kernel_old_time_t time_t;
+
+struct itimerspec;
+struct itimerval;
+struct timeval;
+struct timex;
+#endif
+
 struct trace_syscall_entry {
 	void *event_func;
 	const struct lttng_kernel_event_desc *desc;
-	const struct lttng_kernel_event_field **fields;
+	const struct lttng_kernel_event_field * const *fields;
 	unsigned int nrargs;
 };
 
@@ -15,4 +92,18 @@ struct trace_syscall_table {
 	const struct trace_syscall_entry *table;
 	const size_t len;
 };
+
+extern
+void syscall_entry_event_probe(void *__data, struct pt_regs *regs, long id);
+
+extern
+void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret);
+
+extern
+void syscall_entry_event_notifier_probe(void *__data, struct pt_regs *regs,
+		long id);
+extern
+void syscall_exit_event_notifier_probe(void *__data, struct pt_regs *regs,
+		long ret);
+
 #endif /* LTTNG_SYSCALLS_H */