X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lttng-syscalls.c;h=bdbaa5e9536462ac8ed1179be569b9a802822e1e;hb=a56b8216002f8bdb622c1fa56e21900bcefa42a1;hp=bcc06b5cd03759db0334756b3433e806c58e3093;hpb=9f36eaed6f91d5897924b551b44d1edd8cee00e2;p=lttng-modules.git

diff --git a/lttng-syscalls.c b/lttng-syscalls.c
index bcc06b5c..bdbaa5e9 100644
--- a/lttng-syscalls.c
+++ b/lttng-syscalls.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
  *
  * lttng-syscalls.c
  *
@@ -18,14 +18,15 @@
 #include <linux/stringify.h>
 #include <linux/file.h>
 #include <linux/anon_inodes.h>
+#include <linux/fcntl.h>
 #include <asm/ptrace.h>
 #include <asm/syscall.h>
 
 #include <lib/bitfield.h>
-#include <wrapper/tracepoint.h>
-#include <wrapper/file.h>
 #include <wrapper/rcu.h>
+#include <wrapper/syscall.h>
 #include <lttng-events.h>
+#include "lttng-tracepoint.h"
 
 #ifndef CONFIG_COMPAT
 # ifndef is_compat_task
@@ -72,6 +73,18 @@ struct mmap_arg_struct;
 struct file_handle;
 struct user_msghdr;
 
+/*
+ * Forward declaration for kernels >= 5.6
+ */
+struct timex;
+struct timeval;
+struct itimerval;
+struct itimerspec;
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
+typedef __kernel_old_time_t time_t;
+#endif
+
 #ifdef IA32_NR_syscalls
 #define NR_compat_syscalls IA32_NR_syscalls
 #else
@@ -361,9 +374,9 @@ struct lttng_syscall_filter {
 static void syscall_entry_unknown(struct lttng_event *event,
 	struct pt_regs *regs, unsigned int id)
 {
-	unsigned long args[UNKNOWN_SYSCALL_NRARGS];
+	unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-	syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
+	lttng_syscall_get_arguments(current, regs, args);
 	if (unlikely(in_compat_syscall()))
 		__event_probe__compat_syscall_entry_unknown(event, id, args);
 	else
@@ -432,9 +445,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
 	case 1:
 	{
 		void (*fptr)(void *__data, unsigned long arg0) = entry->func;
-		unsigned long args[1];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, args[0]);
 		break;
 	}
@@ -443,9 +456,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
 		void (*fptr)(void *__data,
 			unsigned long arg0,
 			unsigned long arg1) = entry->func;
-		unsigned long args[2];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, args[0], args[1]);
 		break;
 	}
@@ -455,9 +468,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
 			unsigned long arg0,
 			unsigned long arg1,
 			unsigned long arg2) = entry->func;
-		unsigned long args[3];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, args[0], args[1], args[2]);
 		break;
 	}
@@ -468,9 +481,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
 			unsigned long arg1,
 			unsigned long arg2,
 			unsigned long arg3) = entry->func;
-		unsigned long args[4];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, args[0], args[1], args[2], args[3]);
 		break;
 	}
@@ -482,9 +495,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
 			unsigned long arg2,
 			unsigned long arg3,
 			unsigned long arg4) = entry->func;
-		unsigned long args[5];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, args[0], args[1], args[2], args[3], args[4]);
 		break;
 	}
@@ -497,9 +510,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
 			unsigned long arg3,
 			unsigned long arg4,
 			unsigned long arg5) = entry->func;
-		unsigned long args[6];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, args[0], args[1], args[2],
 			args[3], args[4], args[5]);
 		break;
@@ -512,9 +525,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
 static void syscall_exit_unknown(struct lttng_event *event,
 	struct pt_regs *regs, int id, long ret)
 {
-	unsigned long args[UNKNOWN_SYSCALL_NRARGS];
+	unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-	syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
+	lttng_syscall_get_arguments(current, regs, args);
 	if (unlikely(in_compat_syscall()))
 		__event_probe__compat_syscall_exit_unknown(event, id, ret,
 			args);
@@ -588,9 +601,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
 		void (*fptr)(void *__data,
 			long ret,
 			unsigned long arg0) = entry->func;
-		unsigned long args[1];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, ret, args[0]);
 		break;
 	}
@@ -600,9 +613,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
 			long ret,
 			unsigned long arg0,
 			unsigned long arg1) = entry->func;
-		unsigned long args[2];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, ret, args[0], args[1]);
 		break;
 	}
@@ -613,9 +626,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
 			unsigned long arg0,
 			unsigned long arg1,
 			unsigned long arg2) = entry->func;
-		unsigned long args[3];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, ret, args[0], args[1], args[2]);
 		break;
 	}
@@ -627,9 +640,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
 			unsigned long arg1,
 			unsigned long arg2,
 			unsigned long arg3) = entry->func;
-		unsigned long args[4];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, ret, args[0], args[1], args[2], args[3]);
 		break;
 	}
@@ -642,9 +655,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
 			unsigned long arg2,
 			unsigned long arg3,
 			unsigned long arg4) = entry->func;
-		unsigned long args[5];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, ret, args[0], args[1], args[2], args[3], args[4]);
 		break;
 	}
@@ -658,9 +671,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
 			unsigned long arg3,
 			unsigned long arg4,
 			unsigned long arg5) = entry->func;
-		unsigned long args[6];
+		unsigned long args[LTTNG_SYSCALL_NR_ARGS];
 
-		syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+		lttng_syscall_get_arguments(current, regs, args);
 		fptr(event, ret, args[0], args[1], args[2],
 			args[3], args[4], args[5]);
 		break;
@@ -747,8 +760,6 @@ int lttng_syscalls_register(struct lttng_channel *chan, void *filter)
 	struct lttng_kernel_event ev;
 	int ret;
 
-	wrapper_vmalloc_sync_all();
-
 	if (!chan->sc_table) {
 		/* create syscall table mapping syscall to events */
 		chan->sc_table = kzalloc(sizeof(struct lttng_event *)
@@ -871,7 +882,7 @@ int lttng_syscalls_register(struct lttng_channel *chan, void *filter)
 		return ret;
 #endif
 	if (!chan->sys_enter_registered) {
-		ret = lttng_wrapper_tracepoint_probe_register("sys_enter",
+		ret = lttng_tracepoint_probe_register("sys_enter",
 				(void *) syscall_entry_probe, chan);
 		if (ret)
 			return ret;
@@ -882,10 +893,10 @@ int lttng_syscalls_register(struct lttng_channel *chan, void *filter)
 	 * conflict with sys_exit syscall entry.
 	 */
 	if (!chan->sys_exit_registered) {
-		ret = lttng_wrapper_tracepoint_probe_register("sys_exit",
+		ret = lttng_tracepoint_probe_register("sys_exit",
 				(void *) syscall_exit_probe, chan);
 		if (ret) {
-			WARN_ON_ONCE(lttng_wrapper_tracepoint_probe_unregister("sys_enter",
+			WARN_ON_ONCE(lttng_tracepoint_probe_unregister("sys_enter",
 				(void *) syscall_entry_probe, chan));
 			return ret;
 		}
@@ -904,15 +915,15 @@ int lttng_syscalls_unregister(struct lttng_channel *chan)
 	if (!chan->sc_table)
 		return 0;
 	if (chan->sys_enter_registered) {
-		ret = lttng_wrapper_tracepoint_probe_unregister("sys_exit",
-				(void *) syscall_exit_probe, chan);
+		ret = lttng_tracepoint_probe_unregister("sys_enter",
+				(void *) syscall_entry_probe, chan);
 		if (ret)
 			return ret;
 		chan->sys_enter_registered = 0;
 	}
 	if (chan->sys_exit_registered) {
-		ret = lttng_wrapper_tracepoint_probe_unregister("sys_enter",
-				(void *) syscall_entry_probe, chan);
+		ret = lttng_tracepoint_probe_unregister("sys_exit",
+				(void *) syscall_exit_probe, chan);
 		if (ret)
 			return ret;
 		chan->sys_exit_registered = 0;
@@ -1283,7 +1294,7 @@ int lttng_abi_syscall_list(void)
 	struct file *syscall_list_file;
 	int file_fd, ret;
 
-	file_fd = lttng_get_unused_fd();
+	file_fd = get_unused_fd_flags(0);
 	if (file_fd < 0) {
 		ret = file_fd;
 		goto fd_error;