kfree(tp_locvar->fds_out); \
kfree(tp_locvar->fds_ex);
-#if defined(CONFIG_X86_32) || defined(CONFIG_X86_64)
+#if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM)
#define OVERRIDE_32_select
#define OVERRIDE_64_select
SC_LTTNG_TRACEPOINT_EVENT_CODE(select,
LTTNG_SYSCALL_SELECT_code_post
)
)
-#endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) */
+#endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM) */
#if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
#define OVERRIDE_32_pselect6
if (!tp_locvar->fds) \
goto error; \
err = lib_ring_buffer_copy_from_user_check_nofault( \
- tp_locvar->fds, ufds, \
- nfds * sizeof(struct pollfd)); \
+ tp_locvar->fds, ufds, tp_locvar->alloc_fds); \
if (err != 0) \
goto error; \
} \
#define LTTNG_SYSCALL_POLL_code_post \
kfree(tp_locvar->fds);
-#if defined(CONFIG_X86_32) || defined(CONFIG_X86_64)
+#if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM)
#define OVERRIDE_32_poll
#define OVERRIDE_64_poll
SC_LTTNG_TRACEPOINT_EVENT_CODE(poll,
LTTNG_SYSCALL_POLL_code_post
)
)
-#endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) */
+#endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM) */
#if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
#define OVERRIDE_32_ppoll
)
#endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
+#include <linux/eventpoll.h>
+
+SC_LTTNG_TRACEPOINT_ENUM(lttng_epoll_op,
+ TP_ENUM_VALUES(
+ ctf_enum_value("EPOLL_CTL_ADD", EPOLL_CTL_ADD)
+ ctf_enum_value("EPOLL_CTL_DEL", EPOLL_CTL_DEL)
+ ctf_enum_value("EPOLL_CTL_MOD", EPOLL_CTL_MOD)
+ )
+)
+
+#ifndef ONCE_LTTNG_TRACE_EPOLL_CTL_H
+#define ONCE_LTTNG_TRACE_EPOLL_CTL_H
+
+#define LTTNG_EPOLL_NRFLAGS (POLLHUP + 1)
+#define EPOLL_FLAGS_PADDING_SIZE (sizeof(uint8_t) * BITS_PER_BYTE) - \
+ ilog2(LTTNG_EPOLL_NRFLAGS - 1)
+
+/*
+ * Only extract the values specified by iBCS2 for now.
+ */
+static struct lttng_event_field lttng_epoll_ctl_events_fields[] = {
+ /* 0x0001 */
+ [ilog2(POLLIN)] = {
+ .name = "EPOLLIN",
+ .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none),
+ },
+ /* 0x0002 */
+ [ilog2(POLLPRI)] = {
+ .name = "EPOLLPRI",
+ .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none),
+ },
+ /* 0x0004 */
+ [ilog2(POLLOUT)] = {
+ .name = "EPOLLOUT",
+ .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none),
+ },
+ /* 0x0008 */
+ [ilog2(POLLERR)] = {
+ .name = "EPOLLERR",
+ .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none),
+ },
+ /* 0x0010 */
+ [ilog2(POLLHUP)] = {
+ .name = "EPOLLHUP",
+ .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none),
+ },
+ [ilog2(LTTNG_EPOLL_NRFLAGS)] = {
+ .name = "padding",
+ .type = __type_integer(int, EPOLL_FLAGS_PADDING_SIZE, 1, 0,
+ __LITTLE_ENDIAN, 10, none),
+ },
+
+};
+
+static struct lttng_event_field lttng_epoll_data_fields[] = {
+ [0] = {
+ .name = "u64",
+ .type = __type_integer(uint64_t, 0, 0, 0, __BYTE_ORDER, 16, none),
+ },
+ [1] = {
+ .name = "fd",
+ .type = __type_integer(int, 0, 0, 0, __BYTE_ORDER, 10, none),
+ },
+};
+
+static struct lttng_event_field epoll_ctl_fields[] = {
+ [0] = {
+ .name = "data_union",
+ .type = {
+ .atype = atype_struct,
+ .u._struct.nr_fields = ARRAY_SIZE(lttng_epoll_data_fields),
+ .u._struct.fields = lttng_epoll_data_fields,
+ }
+ },
+ [1] = {
+ .name = "raw_events",
+ .type = __type_integer(uint32_t, 0, 0, 0, __BYTE_ORDER, 16, none),
+ },
+ [2] = {
+ .name = "events",
+ .type = {
+ .atype = atype_struct,
+ .u._struct.nr_fields = ARRAY_SIZE(lttng_epoll_ctl_events_fields),
+ .u._struct.fields = lttng_epoll_ctl_events_fields,
+ }
+ },
+};
+#endif /* ONCE_LTTNG_TRACE_EPOLL_CTL_H */
+
+#if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
+#define OVERRIDE_32_epoll_ctl
+#define OVERRIDE_64_epoll_ctl
+SC_LTTNG_TRACEPOINT_EVENT_CODE(epoll_ctl,
+ TP_PROTO(sc_exit(long ret,) int epfd, int op, int fd,
+ struct epoll_event __user * uevent),
+ TP_ARGS(sc_exit(ret,) epfd, op, fd, uevent),
+ TP_locvar(
+ struct epoll_event event;
+ int err;
+ ),
+ TP_code_pre(
+ tp_locvar->err = lib_ring_buffer_copy_from_user_check_nofault(
+ &tp_locvar->event, uevent, sizeof(struct epoll_event));
+ ),
+ TP_FIELDS(
+ sc_exit(ctf_integer(long, ret, ret))
+ sc_in(ctf_integer(int, epfd, epfd))
+ sc_in(ctf_enum(lttng_epoll_op, int, op_enum, op))
+ sc_in(ctf_integer(int, fd, fd))
+ sc_in(
+ ctf_custom_field(
+ ctf_custom_type(
+ .atype = atype_struct,
+ .u._struct.nr_fields = ARRAY_SIZE(epoll_ctl_fields),
+ .u._struct.fields = epoll_ctl_fields,
+ ),
+ event,
+ ctf_custom_code(
+ ctf_align(uint64_t)
+ if (!tp_locvar->err) {
+ ctf_integer_type(uint64_t, tp_locvar->event.data)
+ ctf_integer_type(int, tp_locvar->event.data)
+ ctf_integer_bitfield_type(uint32_t,
+ tp_locvar->event.events)
+ ctf_integer_bitfield_type(uint8_t,
+ (uint8_t) tp_locvar->event.events)
+ } else {
+ ctf_integer_type(uint64_t, 0)
+ ctf_integer_type(int, 0)
+ ctf_integer_bitfield_type(uint32_t, 0)
+ ctf_integer_bitfield_type(uint8_t, 0)
+ }
+ )
+ )
+ )
+ ),
+ TP_code_post()
+)
+#endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
+
+#ifndef ONCE_LTTNG_TRACE_EPOLL_H
+#define ONCE_LTTNG_TRACE_EPOLL_H
+
+static struct lttng_event_field lttng_epoll_wait_fields[] = {
+ [0] = {
+ .name = "data_union",
+ .type = {
+ .atype = atype_struct,
+ .u._struct.nr_fields = ARRAY_SIZE(lttng_epoll_data_fields),
+ .u._struct.fields = lttng_epoll_data_fields,
+ }
+ },
+ [1] = {
+ .name = "raw_events",
+ .type = __type_integer(uint32_t, 0, 0, 0, __BYTE_ORDER, 16, none),
+ },
+ [2] = {
+ .name = "events",
+ .type = {
+ .atype = atype_struct,
+ .u._struct.nr_fields = ARRAY_SIZE(lttng_epoll_ctl_events_fields),
+ .u._struct.fields = lttng_epoll_ctl_events_fields,
+ }
+ },
+};
+
+static struct lttng_type lttng_epoll_wait_elem = {
+ .atype = atype_struct,
+ .u._struct.nr_fields = ARRAY_SIZE(lttng_epoll_wait_fields),
+ .u._struct.fields = lttng_epoll_wait_fields,
+};
+
+#endif /* ONCE_LTTNG_TRACE_EPOLL_H */
+
+#define LTTNG_SYSCALL_EPOLL_WAIT_locvar \
+ sc_out( \
+ unsigned int fds_length; \
+ uint8_t overflow; \
+ struct epoll_event *events; \
+ )
+
+#define LTTNG_SYSCALL_EPOLL_WAIT_code_pre \
+ BUILD_BUG_ON(((ARRAY_SIZE(lttng_epoll_ctl_events_fields) - 1) + \
+ EPOLL_FLAGS_PADDING_SIZE) != \
+ sizeof(uint8_t) * BITS_PER_BYTE); \
+ sc_out({ \
+ int err; \
+ unsigned long maxalloc; \
+ \
+ tp_locvar->fds_length = 0; \
+ tp_locvar->events = NULL; \
+ tp_locvar->overflow = 0; \
+ \
+ if (maxevents <= 0 || ret <= 0 || ret > maxevents) \
+ goto skip_code; \
+ \
+ if (maxevents > PAGE_SIZE / sizeof(struct epoll_event)) { \
+ maxalloc = PAGE_SIZE / sizeof(struct epoll_event); \
+ } else { \
+ maxalloc = maxevents; \
+ } \
+ \
+ if (ret > maxalloc) { \
+ tp_locvar->fds_length = maxalloc; \
+ tp_locvar->overflow = 1; \
+ } else { \
+ tp_locvar->fds_length = ret; \
+ } \
+ \
+ tp_locvar->events = kmalloc( \
+ maxalloc * sizeof(struct epoll_event), \
+ GFP_ATOMIC | GFP_NOWAIT); \
+ if (!tp_locvar->events) { \
+ tp_locvar->fds_length = 0; \
+ goto skip_code; \
+ } \
+ \
+ err = lib_ring_buffer_copy_from_user_check_nofault( \
+ tp_locvar->events, uevents, \
+ maxalloc * sizeof(struct epoll_event)); \
+ if (err != 0) \
+ tp_locvar->fds_length = 0; \
+ } \
+ skip_code: \
+ )
+
+#define LTTNG_SYSCALL_EPOLL_WAIT_fds_field \
+ ctf_custom_field( \
+ ctf_custom_type( \
+ .atype = atype_sequence_compound, \
+ .u.sequence_compound.length_name = \
+ "fds_length", \
+ .u.sequence_compound.elem_type = \
+ <tng_epoll_wait_elem, \
+ ), \
+ fds, \
+ ctf_custom_code( \
+ uint32_t i; \
+ \
+ ctf_align(uint64_t) \
+ for (i = 0; i < tp_locvar->fds_length; i++) { \
+ ctf_integer_type(uint64_t, tp_locvar->events[i].data) \
+ ctf_integer_type(int, tp_locvar->events[i].data) \
+ ctf_integer_bitfield_type(uint32_t, \
+ tp_locvar->events[i].events) \
+ ctf_integer_bitfield_type(uint8_t, \
+ (uint8_t) tp_locvar->events[i].events) \
+ } \
+ ) \
+ )
+
+#define LTTNG_SYSCALL_EPOLL_WAIT_code_post \
+ sc_out( \
+ kfree(tp_locvar->events); \
+ )
+
+
+#if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM)
+#define OVERRIDE_32_epoll_wait
+#define OVERRIDE_64_epoll_wait
+SC_LTTNG_TRACEPOINT_EVENT_CODE(epoll_wait,
+ TP_PROTO(sc_exit(long ret,) int epfd, struct epoll_event __user * uevents,
+ int maxevents, int timeout),
+ TP_ARGS(sc_exit(ret,) epfd, uevents, maxevents, timeout),
+ TP_locvar(
+ LTTNG_SYSCALL_EPOLL_WAIT_locvar
+ ),
+ TP_code_pre(
+ LTTNG_SYSCALL_EPOLL_WAIT_code_pre
+ ),
+ TP_FIELDS(
+ sc_exit(ctf_integer(long, ret, ret))
+ sc_in(ctf_integer(int, epfd, epfd))
+ sc_in(ctf_integer(int, maxevents, maxevents))
+ sc_in(ctf_integer(int, timeout, timeout))
+ sc_out(ctf_integer(unsigned int, fds_length, tp_locvar->fds_length))
+ sc_out(ctf_integer(uint8_t, overflow, tp_locvar->overflow))
+ sc_out(
+ LTTNG_SYSCALL_EPOLL_WAIT_fds_field
+ )
+ ),
+ TP_code_post(
+ LTTNG_SYSCALL_EPOLL_WAIT_code_post
+ )
+)
+#endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM) */
+
+#if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
+#define OVERRIDE_32_epoll_pwait
+#define OVERRIDE_64_epoll_pwait
+SC_LTTNG_TRACEPOINT_EVENT_CODE(epoll_pwait,
+ TP_PROTO(sc_exit(long ret,) int epfd, struct epoll_event __user * uevents,
+ int maxevents, int timeout, const sigset_t __user * sigmask, size_t sigsetsize),
+ TP_ARGS(sc_exit(ret,) epfd, uevents, maxevents, timeout, sigmask, sigsetsize),
+ TP_locvar(
+ LTTNG_SYSCALL_EPOLL_WAIT_locvar
+ ),
+ TP_code_pre(
+ LTTNG_SYSCALL_EPOLL_WAIT_code_pre
+ ),
+ TP_FIELDS(
+ sc_exit(ctf_integer(long, ret, ret))
+ sc_in(ctf_integer(int, epfd, epfd))
+ sc_in(ctf_integer(int, maxevents, maxevents))
+ sc_in(ctf_integer(int, timeout, timeout))
+ sc_in(ctf_integer_hex(const sigset_t *, sigmask, sigmask))
+ sc_in(ctf_integer(size_t, sigsetsize, sigsetsize))
+ sc_out(ctf_integer(unsigned int, fds_length, tp_locvar->fds_length))
+ sc_out(ctf_integer(uint8_t, overflow, tp_locvar->overflow))
+ sc_out(
+ LTTNG_SYSCALL_EPOLL_WAIT_fds_field
+ )
+ ),
+ TP_code_post(
+ LTTNG_SYSCALL_EPOLL_WAIT_code_post
+ )
+)
+#endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
+
+#if (defined(CONFIG_X86_64) && !defined(LTTNG_SC_COMPAT)) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
+#define OVERRIDE_32_socketpair
+#define OVERRIDE_64_socketpair
+SC_LTTNG_TRACEPOINT_EVENT(socketpair,
+ TP_PROTO(sc_exit(long ret,) int family, int type, int protocol, int *usockvec),
+ TP_ARGS(sc_exit(ret,) family, type, protocol, usockvec),
+ TP_FIELDS(
+ sc_exit(ctf_integer(long, ret, ret))
+ sc_in(ctf_integer(int, family, family))
+ sc_in(ctf_integer(int, type, type))
+ sc_in(ctf_integer(int, protocol, protocol))
+ sc_out(ctf_user_array(int, socket, usockvec, 2))
+ )
+)
+#endif /* (defined(CONFIG_X86_64) && !defined(LTTNG_SC_COMPAT)) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
+
#endif /* CREATE_SYSCALL_TABLE */
projects / lttng-modules.git / blobdiff