X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=instrumentation%2Fsyscalls%2Fheaders%2Fsyscalls_pointers_override.h;h=d4c7ab04dc4dc7db74a85be30f3a0983e0643496;hb=b7cdc18250880cc44edeef4a4b42c8ac7a135a6d;hp=184f3a96e8c08b0b0604999531e17f70af817e56;hpb=639655f9b4c42d3e82a7e69afbae8d26e69f9be3;p=lttng-modules.git

diff --git a/instrumentation/syscalls/headers/syscalls_pointers_override.h b/instrumentation/syscalls/headers/syscalls_pointers_override.h
index 184f3a96..d4c7ab04 100644
--- a/instrumentation/syscalls/headers/syscalls_pointers_override.h
+++ b/instrumentation/syscalls/headers/syscalls_pointers_override.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) */
+
 #ifndef CREATE_SYSCALL_TABLE
 
 #define OVERRIDE_32_execve
@@ -100,9 +102,8 @@ SC_LTTNG_TRACEPOINT_EVENT(pipe2,
 		}									\
 											\
 		if (inp) {								\
-			tp_locvar->fds_in = kmalloc(					\
-					tp_locvar->nr_ulong * sizeof(unsigned long),	\
-					GFP_ATOMIC | GFP_NOWAIT);			\
+			tp_locvar->fds_in = lttng_tp_mempool_alloc(				\
+					tp_locvar->nr_ulong * sizeof(unsigned long));			\
 			if (!tp_locvar->fds_in)						\
 				goto error;						\
 											\
@@ -113,9 +114,8 @@ SC_LTTNG_TRACEPOINT_EVENT(pipe2,
 				goto error;						\
 		}									\
 		if (outp) {								\
-			tp_locvar->fds_out = kmalloc(					\
-					tp_locvar->nr_ulong * sizeof(unsigned long),	\
-					GFP_ATOMIC | GFP_NOWAIT);			\
+			tp_locvar->fds_out = lttng_tp_mempool_alloc(				\
+					tp_locvar->nr_ulong * sizeof(unsigned long));	\
 			if (!tp_locvar->fds_out)					\
 				goto error;						\
 											\
@@ -126,9 +126,8 @@ SC_LTTNG_TRACEPOINT_EVENT(pipe2,
 				goto error;						\
 		}									\
 		if (exp) {								\
-			tp_locvar->fds_ex = kmalloc(					\
-					tp_locvar->nr_ulong * sizeof(unsigned long),	\
-					GFP_ATOMIC | GFP_NOWAIT);			\
+			tp_locvar->fds_ex = lttng_tp_mempool_alloc(				\
+					tp_locvar->nr_ulong * sizeof(unsigned long));	\
 			if (!tp_locvar->fds_ex)						\
 				goto error;						\
 											\
@@ -221,9 +220,9 @@ end:	; /* Label at end of compound statement. */					\
 	)
 
 #define LTTNG_SYSCALL_SELECT_code_post	\
-	kfree(tp_locvar->fds_in);	\
-	kfree(tp_locvar->fds_out);	\
-	kfree(tp_locvar->fds_ex);
+	lttng_tp_mempool_free(tp_locvar->fds_in);	\
+	lttng_tp_mempool_free(tp_locvar->fds_out);	\
+	lttng_tp_mempool_free(tp_locvar->fds_ex);
 
 #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM)
 #define OVERRIDE_32_select
@@ -413,8 +412,7 @@ static struct lttng_type lttng_pollfd_elem = {
 	{										\
 		int err;								\
 											\
-		tp_locvar->fds = kmalloc(tp_locvar->alloc_fds,				\
-				GFP_ATOMIC | GFP_NOWAIT);				\
+		tp_locvar->fds = lttng_tp_mempool_alloc(tp_locvar->alloc_fds);		\
 		if (!tp_locvar->fds)							\
 			goto error;							\
 		err = lib_ring_buffer_copy_from_user_check_nofault(			\
@@ -494,7 +492,7 @@ end:											\
 	)
 
 #define LTTNG_SYSCALL_POLL_code_post	\
-	kfree(tp_locvar->fds);
+	lttng_tp_mempool_free(tp_locvar->fds);
 
 #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM)
 #define OVERRIDE_32_poll
@@ -761,9 +759,8 @@ static struct lttng_type lttng_epoll_wait_elem = {
 			tp_locvar->fds_length = ret;				\
 		}								\
 										\
-		tp_locvar->events = kmalloc(					\
-			maxalloc * sizeof(struct epoll_event),			\
-			GFP_ATOMIC | GFP_NOWAIT);				\
+		tp_locvar->events = lttng_tp_mempool_alloc(				\
+			maxalloc * sizeof(struct epoll_event));			\
 		if (!tp_locvar->events) {					\
 			tp_locvar->fds_length = 0;				\
 			goto skip_code;						\
@@ -805,7 +802,7 @@ static struct lttng_type lttng_epoll_wait_elem = {
 
 #define LTTNG_SYSCALL_EPOLL_WAIT_code_post	\
 	sc_out(					\
-		kfree(tp_locvar->events);	\
+		lttng_tp_mempool_free(tp_locvar->events);	\
 	)
 
 
@@ -887,4 +884,86 @@ SC_LTTNG_TRACEPOINT_EVENT(socketpair,
 )
 #endif /* (defined(CONFIG_X86_64) && !defined(LTTNG_SC_COMPAT)) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
 
+/*
+ * Enumeration of the open flags, as described in the 'open'
+ * system call man page.
+ */
+SC_LTTNG_TRACEPOINT_ENUM(lttng_file_status_flags,
+	TP_ENUM_VALUES(
+		ctf_enum_value("O_RDONLY", O_RDONLY)
+		ctf_enum_value("O_WRONLY", O_WRONLY)
+		ctf_enum_value("O_RDWR", O_RDWR)
+		ctf_enum_value("O_CREAT", O_CREAT)
+		ctf_enum_value("O_EXCL", O_EXCL)
+		ctf_enum_value("O_NOCTTY", O_NOCTTY)
+		ctf_enum_value("O_TRUNC", O_TRUNC)
+		ctf_enum_value("O_APPEND", O_APPEND)
+		ctf_enum_value("O_NONBLOCK", O_NONBLOCK)
+		ctf_enum_value("O_DSYNC", O_DSYNC)
+		ctf_enum_value("FASYNC", FASYNC)
+		ctf_enum_value("O_DIRECT", O_DIRECT)
+		ctf_enum_value("O_LARGEFILE", O_LARGEFILE)
+		ctf_enum_value("O_DIRECTORY", O_DIRECTORY)
+		ctf_enum_value("O_NOFOLLOW", O_NOFOLLOW)
+		ctf_enum_value("O_NOATIME", O_NOATIME)
+		ctf_enum_value("O_CLOEXEC", O_CLOEXEC)
+		ctf_enum_value("O_SYNC", __O_SYNC)
+		ctf_enum_value("O_PATH", O_PATH)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0))
+		ctf_enum_value("O_TMPFILE", __O_TMPFILE)
+#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) */
+	)
+)
+
+/*
+ * Enumeration of the open flags, as described in the 'open'
+ * system call man page.
+ */
+SC_LTTNG_TRACEPOINT_ENUM(lttng_file_mode,
+	TP_ENUM_VALUES(
+		ctf_enum_value("S_IRWXU", S_IRWXU)
+		ctf_enum_value("S_IRUSR", S_IRUSR)
+		ctf_enum_value("S_IWUSR", S_IWUSR)
+		ctf_enum_value("S_IXUSR", S_IXUSR)
+		ctf_enum_value("S_IRWXG", S_IRWXG)
+		ctf_enum_value("S_IRGRP", S_IRGRP)
+		ctf_enum_value("S_IWGRP", S_IWGRP)
+		ctf_enum_value("S_IXGRP", S_IXGRP)
+		ctf_enum_value("S_IRWXO", S_IRWXO)
+		ctf_enum_value("S_IROTH", S_IROTH)
+		ctf_enum_value("S_IWOTH", S_IWOTH)
+		ctf_enum_value("S_IXOTH", S_IXOTH)
+		ctf_enum_value("S_ISUID", S_ISUID)
+		ctf_enum_value("S_ISGID", S_ISGID)
+		ctf_enum_value("S_ISVTX", S_ISVTX)
+	)
+)
+
+#define OVERRIDE_32_openat
+#define OVERRIDE_64_openat
+SC_LTTNG_TRACEPOINT_EVENT(openat,
+	TP_PROTO(sc_exit(long ret,) int dfd, const char * filename, int flags, umode_t mode),
+	TP_ARGS(sc_exit(ret,) dfd, filename, flags, mode),
+	TP_FIELDS(
+		sc_exit(ctf_integer(long, ret, ret))
+		sc_in(ctf_integer(int, dfd, dfd))
+		sc_in(ctf_user_string(filename, filename))
+		sc_in(ctf_enum(lttng_file_status_flags, int, flags, flags))
+		sc_in(ctf_enum(lttng_file_mode, umode_t, mode, mode))
+	)
+)
+
+#define OVERRIDE_32_open
+#define OVERRIDE_64_open
+SC_LTTNG_TRACEPOINT_EVENT(open,
+	TP_PROTO(sc_exit(long ret,) const char * filename, int flags, umode_t mode),
+	TP_ARGS(sc_exit(ret,) filename, flags, mode),
+	TP_FIELDS(
+		sc_exit(ctf_integer(long, ret, ret))
+		sc_in(ctf_user_string(filename, filename))
+		sc_in(ctf_enum(lttng_file_status_flags, int, flags, flags))
+		sc_in(ctf_enum(lttng_file_mode, umode_t, mode, mode))
+	)
+)
+
 #endif /* CREATE_SYSCALL_TABLE */