X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=src%2Flttng-syscalls.c;h=6b52b69bbf7dd2c3d0f50e2dfaa6b2f2d96a160f;hb=5bcf4dbd5953ee62fc967b38f59cd25b6fec2111;hp=dfb00cbb7043d58ac780abb8cfc4662405d02aba;hpb=e2d5dbc7d09c7aa4f7c391fcdd4dfc95ba1ed326;p=lttng-modules.git diff --git a/src/lttng-syscalls.c b/src/lttng-syscalls.c index dfb00cbb..6b52b69b 100644 --- a/src/lttng-syscalls.c +++ b/src/lttng-syscalls.c @@ -29,8 +29,11 @@ #include #include #include +#include #include +#include "lttng-syscalls.h" + #ifndef CONFIG_COMPAT # ifndef is_compat_task # define is_compat_task() (0) @@ -59,15 +62,11 @@ enum sc_type { #define SYSCALL_EXIT_STR __stringify(SYSCALL_EXIT_TOK) #define COMPAT_SYSCALL_EXIT_STR __stringify(COMPAT_SYSCALL_EXIT_TOK) -static void syscall_entry_event_probe(void *__data, struct pt_regs *regs, long id); -static void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret); -static void syscall_entry_event_notifier_probe(void *__data, struct pt_regs *regs, long id); -static void syscall_exit_event_notifier_probe(void *__data, struct pt_regs *regs, long ret); @@ -117,260 +116,15 @@ typedef __kernel_old_time_t time_t; #include #undef TRACE_SYSTEM -#define SC_ENTER - -#undef sc_exit -#define sc_exit(...) -#undef sc_in -#define sc_in(...) __VA_ARGS__ -#undef sc_out -#define sc_out(...) -#undef sc_inout -#define sc_inout(...) __VA_ARGS__ - -/* Hijack probe callback for system call enter */ -#undef TP_PROBE_CB -#define TP_PROBE_CB(_template) &syscall_entry_event_probe -#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \ - LTTNG_TRACEPOINT_EVENT(syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \ - PARAMS(_fields)) -#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ - LTTNG_TRACEPOINT_EVENT_CODE(syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \ - PARAMS(_locvar), PARAMS(_code_pre), \ - PARAMS(_fields), PARAMS(_code_post)) -#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ - LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(syscall_entry_##_name, PARAMS(_fields)) -#define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name) \ - LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(syscall_entry_##_template, syscall_entry_##_name) -/* Enumerations only defined at first inclusion. */ -#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values) \ - LTTNG_TRACEPOINT_ENUM(_name, PARAMS(_values)) -#undef TRACE_SYSTEM -#define TRACE_SYSTEM syscall_entry_integers -#define TRACE_INCLUDE_FILE syscalls_integers -#include -#undef TRACE_INCLUDE_FILE -#undef TRACE_SYSTEM -#define TRACE_SYSTEM syscall_entry_pointers -#define TRACE_INCLUDE_FILE syscalls_pointers -#include -#undef TRACE_INCLUDE_FILE -#undef TRACE_SYSTEM -#undef SC_LTTNG_TRACEPOINT_ENUM -#undef SC_LTTNG_TRACEPOINT_EVENT_CODE -#undef SC_LTTNG_TRACEPOINT_EVENT -#undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS -#undef SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS -#undef TP_PROBE_CB -#undef _TRACE_SYSCALLS_INTEGERS_H -#undef _TRACE_SYSCALLS_POINTERS_H - -/* Hijack probe callback for compat system call enter */ -#define TP_PROBE_CB(_template) &syscall_entry_event_probe -#define LTTNG_SC_COMPAT -#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \ - LTTNG_TRACEPOINT_EVENT(compat_syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \ - PARAMS(_fields)) -#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ - LTTNG_TRACEPOINT_EVENT_CODE(compat_syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \ - PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) -#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ - LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(compat_syscall_entry_##_name, PARAMS(_fields)) -#define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name) \ - LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(compat_syscall_entry_##_template, \ - compat_syscall_entry_##_name) -/* Enumerations only defined at inital inclusion (not here). */ -#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values) -#define TRACE_SYSTEM compat_syscall_entry_integers -#define TRACE_INCLUDE_FILE compat_syscalls_integers -#include -#undef TRACE_INCLUDE_FILE -#undef TRACE_SYSTEM -#define TRACE_SYSTEM compat_syscall_entry_pointers -#define TRACE_INCLUDE_FILE compat_syscalls_pointers -#include -#undef TRACE_INCLUDE_FILE -#undef TRACE_SYSTEM -#undef SC_LTTNG_TRACEPOINT_ENUM -#undef SC_LTTNG_TRACEPOINT_EVENT_CODE -#undef SC_LTTNG_TRACEPOINT_EVENT -#undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS -#undef SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS -#undef TP_PROBE_CB -#undef _TRACE_SYSCALLS_INTEGERS_H -#undef _TRACE_SYSCALLS_POINTERS_H -#undef LTTNG_SC_COMPAT - -#undef SC_ENTER - -#define SC_EXIT - -#undef sc_exit -#define sc_exit(...) __VA_ARGS__ -#undef sc_in -#define sc_in(...) -#undef sc_out -#define sc_out(...) __VA_ARGS__ -#undef sc_inout -#define sc_inout(...) __VA_ARGS__ - -/* Hijack probe callback for system call exit */ -#define TP_PROBE_CB(_template) &syscall_exit_event_probe -#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \ - LTTNG_TRACEPOINT_EVENT(syscall_exit_##_name, PARAMS(_proto), PARAMS(_args), \ - PARAMS(_fields)) -#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ - LTTNG_TRACEPOINT_EVENT_CODE(syscall_exit_##_name, PARAMS(_proto), PARAMS(_args), \ - PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) -#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ - LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(syscall_exit_##_name, PARAMS(_fields)) -#define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name) \ - LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(syscall_exit_##_template, \ - syscall_exit_##_name) -/* Enumerations only defined at inital inclusion (not here). */ -#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values) -#define TRACE_SYSTEM syscall_exit_integers -#define TRACE_INCLUDE_FILE syscalls_integers -#include -#undef TRACE_INCLUDE_FILE -#undef TRACE_SYSTEM -#define TRACE_SYSTEM syscall_exit_pointers -#define TRACE_INCLUDE_FILE syscalls_pointers -#include -#undef TRACE_INCLUDE_FILE -#undef TRACE_SYSTEM -#undef SC_LTTNG_TRACEPOINT_ENUM -#undef SC_LTTNG_TRACEPOINT_EVENT_CODE -#undef SC_LTTNG_TRACEPOINT_EVENT -#undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS -#undef SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS -#undef TP_PROBE_CB -#undef _TRACE_SYSCALLS_INTEGERS_H -#undef _TRACE_SYSCALLS_POINTERS_H - - -/* Hijack probe callback for compat system call exit */ -#define TP_PROBE_CB(_template) &syscall_exit_event_probe -#define LTTNG_SC_COMPAT -#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \ - LTTNG_TRACEPOINT_EVENT(compat_syscall_exit_##_name, PARAMS(_proto), PARAMS(_args), \ - PARAMS(_fields)) -#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ - LTTNG_TRACEPOINT_EVENT_CODE(compat_syscall_exit_##_name, PARAMS(_proto), PARAMS(_args), \ - PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) -#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ - LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(compat_syscall_exit_##_name, PARAMS(_fields)) -#define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name) \ - LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(compat_syscall_exit_##_template, \ - compat_syscall_exit_##_name) -/* Enumerations only defined at inital inclusion (not here). */ -#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values) -#define TRACE_SYSTEM compat_syscall_exit_integers -#define TRACE_INCLUDE_FILE compat_syscalls_integers -#include -#undef TRACE_INCLUDE_FILE -#undef TRACE_SYSTEM -#define TRACE_SYSTEM compat_syscall_exit_pointers -#define TRACE_INCLUDE_FILE compat_syscalls_pointers -#include -#undef TRACE_INCLUDE_FILE -#undef TRACE_SYSTEM -#undef SC_LTTNG_TRACEPOINT_ENUM -#undef SC_LTTNG_TRACEPOINT_EVENT_CODE -#undef SC_LTTNG_TRACEPOINT_EVENT -#undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS -#undef SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS #undef TP_PROBE_CB -#undef _TRACE_SYSCALLS_INTEGERS_H -#undef _TRACE_SYSCALLS_POINTERS_H -#undef LTTNG_SC_COMPAT -#undef SC_EXIT - -#undef TP_MODULE_NOINIT -#undef LTTNG_PACKAGE_BUILD -#undef CREATE_TRACE_POINTS - -struct trace_syscall_entry { - void *event_func; - const struct lttng_kernel_event_desc *desc; - const struct lttng_kernel_event_field **fields; - unsigned int nrargs; -}; - -#define CREATE_SYSCALL_TABLE - -#define SC_ENTER - -#undef sc_exit -#define sc_exit(...) - -#undef TRACE_SYSCALL_TABLE -#define TRACE_SYSCALL_TABLE(_template, _name, _nr, _nrargs) \ - [ _nr ] = { \ - .event_func = __event_probe__syscall_entry_##_template, \ - .nrargs = (_nrargs), \ - .fields = __event_fields___syscall_entry_##_template, \ - .desc = &__event_desc___syscall_entry_##_name, \ - }, - -/* Event syscall enter tracing table */ -static const struct trace_syscall_entry sc_table[] = { -#include -#include -}; - -#undef TRACE_SYSCALL_TABLE -#define TRACE_SYSCALL_TABLE(_template, _name, _nr, _nrargs) \ - [ _nr ] = { \ - .event_func = __event_probe__compat_syscall_entry_##_template, \ - .nrargs = (_nrargs), \ - .fields = __event_fields___compat_syscall_entry_##_template, \ - .desc = &__event_desc___compat_syscall_entry_##_name, \ - }, - -/* Event compat syscall enter table */ -const struct trace_syscall_entry compat_sc_table[] = { -#include -#include -}; - -#undef SC_ENTER - -#define SC_EXIT - -#undef sc_exit -#define sc_exit(...) __VA_ARGS__ - -#undef TRACE_SYSCALL_TABLE -#define TRACE_SYSCALL_TABLE(_template, _name, _nr, _nrargs) \ - [ _nr ] = { \ - .event_func = __event_probe__syscall_exit_##_template, \ - .nrargs = (_nrargs), \ - .fields = __event_fields___syscall_exit_##_template, \ - .desc = &__event_desc___syscall_exit_##_name, \ - }, +extern const struct trace_syscall_table sc_table; +extern const struct trace_syscall_table compat_sc_table; /* Event syscall exit table */ -static const struct trace_syscall_entry sc_exit_table[] = { -#include -#include -}; +extern const struct trace_syscall_table sc_exit_table; +extern const struct trace_syscall_table compat_sc_exit_table; -#undef TRACE_SYSCALL_TABLE -#define TRACE_SYSCALL_TABLE(_template, _name, _nr, _nrargs) \ - [ _nr ] = { \ - .event_func = __event_probe__compat_syscall_exit_##_template, \ - .nrargs = (_nrargs), \ - .fields = __event_fields___compat_syscall_exit_##_template, \ - .desc = &__event_desc___compat_syscall_exit_##_name, \ - }, - -/* Event compat syscall exit table */ -const struct trace_syscall_entry compat_sc_exit_table[] = { -#include -#include -}; #undef SC_EXIT @@ -515,8 +269,8 @@ void syscall_entry_event_probe(void *__data, struct pt_regs *regs, long id) /* System call filtered out. */ return; } - table = compat_sc_table; - table_len = ARRAY_SIZE(compat_sc_table); + table = compat_sc_table.table; + table_len = compat_sc_table.len; unknown_action_list = &chan->sc_compat_unknown; } else { struct lttng_syscall_filter *filter = chan->sc_filter; @@ -526,8 +280,8 @@ void syscall_entry_event_probe(void *__data, struct pt_regs *regs, long id) /* System call filtered out. */ return; } - table = sc_table; - table_len = ARRAY_SIZE(sc_table); + table = sc_table.table; + table_len = sc_table.len; unknown_action_list = &chan->sc_unknown; } if (unlikely(id < 0 || id >= table_len)) { @@ -569,8 +323,8 @@ void syscall_entry_event_notifier_probe(void *__data, struct pt_regs *regs, /* System call filtered out. */ return; } - table = compat_sc_table; - table_len = ARRAY_SIZE(compat_sc_table); + table = compat_sc_table.table; + table_len = compat_sc_table.len; unknown_dispatch_list = &group->event_notifier_compat_unknown_syscall_dispatch; } else { struct lttng_syscall_filter *filter = group->sc_filter; @@ -581,8 +335,8 @@ void syscall_entry_event_notifier_probe(void *__data, struct pt_regs *regs, /* System call filtered out. */ return; } - table = sc_table; - table_len = ARRAY_SIZE(sc_table); + table = sc_table.table; + table_len = sc_table.len; unknown_dispatch_list = &group->event_notifier_unknown_syscall_dispatch; } /* Check if the syscall id is out of bound. */ @@ -754,8 +508,8 @@ void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret) /* System call filtered out. */ return; } - table = compat_sc_exit_table; - table_len = ARRAY_SIZE(compat_sc_exit_table); + table = compat_sc_exit_table.table; + table_len = compat_sc_exit_table.len; unknown_action_list = &chan->compat_sc_exit_unknown; } else { struct lttng_syscall_filter *filter = chan->sc_filter; @@ -765,8 +519,8 @@ void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret) /* System call filtered out. */ return; } - table = sc_exit_table; - table_len = ARRAY_SIZE(sc_exit_table); + table = sc_exit_table.table; + table_len = sc_exit_table.len; unknown_action_list = &chan->sc_exit_unknown; } if (unlikely(id < 0 || id >= table_len)) { @@ -792,7 +546,6 @@ void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret) regs, ret); } -static void syscall_exit_event_notifier_probe(void *__data, struct pt_regs *regs, long ret) { @@ -813,8 +566,8 @@ void syscall_exit_event_notifier_probe(void *__data, struct pt_regs *regs, /* System call filtered out. */ return; } - table = compat_sc_exit_table; - table_len = ARRAY_SIZE(compat_sc_exit_table); + table = compat_sc_exit_table.table; + table_len = compat_sc_exit_table.len; unknown_dispatch_list = &group->event_notifier_exit_compat_unknown_syscall_dispatch; } else { struct lttng_syscall_filter *filter = group->sc_filter; @@ -825,8 +578,8 @@ void syscall_exit_event_notifier_probe(void *__data, struct pt_regs *regs, /* System call filtered out. */ return; } - table = sc_exit_table; - table_len = ARRAY_SIZE(sc_exit_table); + table = sc_exit_table.table; + table_len = sc_exit_table.len; unknown_dispatch_list = &group->event_notifier_exit_unknown_syscall_dispatch; } /* Check if the syscall id is out of bound. */ @@ -864,7 +617,7 @@ int lttng_create_syscall_event_if_missing(const struct trace_syscall_entry *tabl enum sc_type type) { struct lttng_channel *chan = event_enabler->chan; - struct lttng_session *session = chan->session; + struct lttng_kernel_session *session = chan->session; unsigned int i; /* Allocate events for each syscall matching enabler, insert into table */ @@ -887,7 +640,7 @@ int lttng_create_syscall_event_if_missing(const struct trace_syscall_entry *tabl * Check if already created. */ head = utils_borrow_hash_table_bucket( - session->events_ht.table, LTTNG_EVENT_HT_SIZE, + session->priv->events_ht.table, LTTNG_EVENT_HT_SIZE, desc->event_name); lttng_hlist_for_each_entry(event_recorder_priv, head, hlist) { if (event_recorder_priv->parent.desc == desc @@ -950,14 +703,14 @@ int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler) if (!chan->sc_table) { /* create syscall table mapping syscall to events */ chan->sc_table = kzalloc(sizeof(struct lttng_kernel_event_recorder *) - * ARRAY_SIZE(sc_table), GFP_KERNEL); + * sc_table.len, GFP_KERNEL); if (!chan->sc_table) return -ENOMEM; } if (!chan->sc_exit_table) { /* create syscall table mapping syscall to events */ chan->sc_exit_table = kzalloc(sizeof(struct lttng_kernel_event_recorder *) - * ARRAY_SIZE(sc_exit_table), GFP_KERNEL); + * sc_exit_table.len, GFP_KERNEL); if (!chan->sc_exit_table) return -ENOMEM; } @@ -967,7 +720,7 @@ int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler) if (!chan->compat_sc_table) { /* create syscall table mapping compat syscall to events */ chan->compat_sc_table = kzalloc(sizeof(struct lttng_kernel_event_recorder *) - * ARRAY_SIZE(compat_sc_table), GFP_KERNEL); + * compat_sc_table.len, GFP_KERNEL); if (!chan->compat_sc_table) return -ENOMEM; } @@ -975,7 +728,7 @@ int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler) if (!chan->compat_sc_exit_table) { /* create syscall table mapping compat syscall to events */ chan->compat_sc_exit_table = kzalloc(sizeof(struct lttng_kernel_event_recorder *) - * ARRAY_SIZE(compat_sc_exit_table), GFP_KERNEL); + * compat_sc_exit_table.len, GFP_KERNEL); if (!chan->compat_sc_exit_table) return -ENOMEM; } @@ -1060,21 +813,21 @@ int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler) hlist_add_head(&event_recorder->priv->parent.u.syscall.node, &chan->sc_exit_unknown); } - ret = lttng_create_syscall_event_if_missing(sc_table, ARRAY_SIZE(sc_table), + ret = lttng_create_syscall_event_if_missing(sc_table.table, sc_table.len, chan->sc_table, event_enabler, SC_TYPE_ENTRY); if (ret) return ret; - ret = lttng_create_syscall_event_if_missing(sc_exit_table, ARRAY_SIZE(sc_exit_table), + ret = lttng_create_syscall_event_if_missing(sc_exit_table.table, sc_exit_table.len, chan->sc_exit_table, event_enabler, SC_TYPE_EXIT); if (ret) return ret; #ifdef CONFIG_COMPAT - ret = lttng_create_syscall_event_if_missing(compat_sc_table, ARRAY_SIZE(compat_sc_table), + ret = lttng_create_syscall_event_if_missing(compat_sc_table.table, compat_sc_table.len, chan->compat_sc_table, event_enabler, SC_TYPE_COMPAT_ENTRY); if (ret) return ret; - ret = lttng_create_syscall_event_if_missing(compat_sc_exit_table, ARRAY_SIZE(compat_sc_exit_table), + ret = lttng_create_syscall_event_if_missing(compat_sc_exit_table.table, compat_sc_exit_table.len, chan->compat_sc_exit_table, event_enabler, SC_TYPE_COMPAT_EXIT); if (ret) return ret; @@ -1125,13 +878,13 @@ int lttng_syscalls_register_event_notifier( if (!group->event_notifier_syscall_dispatch) { group->event_notifier_syscall_dispatch = - kzalloc(sizeof(struct hlist_head) * ARRAY_SIZE(sc_table), + kzalloc(sizeof(struct hlist_head) * sc_table.len, GFP_KERNEL); if (!group->event_notifier_syscall_dispatch) return -ENOMEM; /* Initialize all list_head */ - for (i = 0; i < ARRAY_SIZE(sc_table); i++) + for (i = 0; i < sc_table.len; i++) INIT_HLIST_HEAD(&group->event_notifier_syscall_dispatch[i]); /* Init the unknown syscall notifier list. */ @@ -1140,13 +893,13 @@ int lttng_syscalls_register_event_notifier( if (!group->event_notifier_exit_syscall_dispatch) { group->event_notifier_exit_syscall_dispatch = - kzalloc(sizeof(struct hlist_head) * ARRAY_SIZE(sc_table), + kzalloc(sizeof(struct hlist_head) * sc_table.len, GFP_KERNEL); if (!group->event_notifier_exit_syscall_dispatch) return -ENOMEM; /* Initialize all list_head */ - for (i = 0; i < ARRAY_SIZE(sc_table); i++) + for (i = 0; i < sc_table.len; i++) INIT_HLIST_HEAD(&group->event_notifier_exit_syscall_dispatch[i]); /* Init the unknown exit syscall notifier list. */ @@ -1156,13 +909,13 @@ int lttng_syscalls_register_event_notifier( #ifdef CONFIG_COMPAT if (!group->event_notifier_compat_syscall_dispatch) { group->event_notifier_compat_syscall_dispatch = - kzalloc(sizeof(struct hlist_head) * ARRAY_SIZE(compat_sc_table), + kzalloc(sizeof(struct hlist_head) * compat_sc_table.len, GFP_KERNEL); if (!group->event_notifier_syscall_dispatch) return -ENOMEM; /* Initialize all list_head */ - for (i = 0; i < ARRAY_SIZE(compat_sc_table); i++) + for (i = 0; i < compat_sc_table.len; i++) INIT_HLIST_HEAD(&group->event_notifier_compat_syscall_dispatch[i]); /* Init the unknown syscall notifier list. */ @@ -1171,13 +924,13 @@ int lttng_syscalls_register_event_notifier( if (!group->event_notifier_exit_compat_syscall_dispatch) { group->event_notifier_exit_compat_syscall_dispatch = - kzalloc(sizeof(struct hlist_head) * ARRAY_SIZE(compat_sc_exit_table), + kzalloc(sizeof(struct hlist_head) * compat_sc_exit_table.len, GFP_KERNEL); if (!group->event_notifier_exit_syscall_dispatch) return -ENOMEM; /* Initialize all list_head */ - for (i = 0; i < ARRAY_SIZE(compat_sc_exit_table); i++) + for (i = 0; i < compat_sc_exit_table.len; i++) INIT_HLIST_HEAD(&group->event_notifier_exit_compat_syscall_dispatch[i]); /* Init the unknown exit syscall notifier list. */ @@ -1399,12 +1152,12 @@ int lttng_syscalls_create_matching_event_notifiers( if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRY || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT) { ret = create_matching_event_notifiers(event_notifier_enabler, - sc_table, ARRAY_SIZE(sc_table), SC_TYPE_ENTRY); + sc_table.table, sc_table.len, SC_TYPE_ENTRY); if (ret) goto end; ret = create_matching_event_notifiers(event_notifier_enabler, - compat_sc_table, ARRAY_SIZE(compat_sc_table), + compat_sc_table.table, compat_sc_table.len, SC_TYPE_COMPAT_ENTRY); if (ret) goto end; @@ -1422,7 +1175,7 @@ int lttng_syscalls_create_matching_event_notifiers( if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_EXIT || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT) { ret = create_matching_event_notifiers(event_notifier_enabler, - sc_exit_table, ARRAY_SIZE(sc_exit_table), + sc_exit_table.table, sc_exit_table.len, SC_TYPE_EXIT); if (ret) goto end; @@ -1433,7 +1186,7 @@ int lttng_syscalls_create_matching_event_notifiers( goto end; ret = create_matching_event_notifiers(event_notifier_enabler, - compat_sc_exit_table, ARRAY_SIZE(compat_sc_exit_table), + compat_sc_exit_table.table, compat_sc_exit_table.len, SC_TYPE_COMPAT_EXIT); if (ret) goto end; @@ -1526,11 +1279,11 @@ int get_syscall_nr(const char *syscall_name) int syscall_nr = -1; int i; - for (i = 0; i < ARRAY_SIZE(sc_table); i++) { + for (i = 0; i < sc_table.len; i++) { const struct trace_syscall_entry *entry; const char *it_name; - entry = &sc_table[i]; + entry = &sc_table.table[i]; if (!entry->desc) continue; it_name = entry->desc->event_name; @@ -1549,11 +1302,11 @@ int get_compat_syscall_nr(const char *syscall_name) int syscall_nr = -1; int i; - for (i = 0; i < ARRAY_SIZE(compat_sc_table); i++) { + for (i = 0; i < compat_sc_table.len; i++) { const struct trace_syscall_entry *entry; const char *it_name; - entry = &compat_sc_table[i]; + entry = &compat_sc_table.table[i]; if (!entry->desc) continue; it_name = entry->desc->event_name; @@ -1569,7 +1322,7 @@ int get_compat_syscall_nr(const char *syscall_name) static uint32_t get_sc_tables_len(void) { - return ARRAY_SIZE(sc_table) + ARRAY_SIZE(compat_sc_table); + return sc_table.len + compat_sc_table.len; } static @@ -1827,14 +1580,14 @@ const struct trace_syscall_entry *syscall_list_get_entry(loff_t *pos) const struct trace_syscall_entry *entry; int iter = 0; - for (entry = sc_table; - entry < sc_table + ARRAY_SIZE(sc_table); + for (entry = sc_table.table; + entry < sc_table.table + sc_table.len; entry++) { if (iter++ >= *pos) return entry; } - for (entry = compat_sc_table; - entry < compat_sc_table + ARRAY_SIZE(compat_sc_table); + for (entry = compat_sc_table.table; + entry < compat_sc_table.table + compat_sc_table.len; entry++) { if (iter++ >= *pos) return entry; @@ -1866,21 +1619,21 @@ int get_sc_table(const struct trace_syscall_entry *entry, const struct trace_syscall_entry **table, unsigned int *bitness) { - if (entry >= sc_table && entry < sc_table + ARRAY_SIZE(sc_table)) { + if (entry >= sc_table.table && entry < sc_table.table + sc_table.len) { if (bitness) *bitness = BITS_PER_LONG; if (table) - *table = sc_table; + *table = sc_table.table; return 0; } - if (!(entry >= compat_sc_table - && entry < compat_sc_table + ARRAY_SIZE(compat_sc_table))) { + if (!(entry >= compat_sc_table.table + && entry < compat_sc_table.table + compat_sc_table.len)) { return -EINVAL; } if (bitness) *bitness = 32; if (table) - *table = compat_sc_table; + *table = compat_sc_table.table; return 0; } @@ -1898,11 +1651,11 @@ int syscall_list_show(struct seq_file *m, void *p) return ret; if (!entry->desc) return 0; - if (table == sc_table) { + if (table == sc_table.table) { index = entry - table; name = &entry->desc->event_name[strlen(SYSCALL_ENTRY_STR)]; } else { - index = (entry - table) + ARRAY_SIZE(sc_table); + index = (entry - table) + sc_table.len; name = &entry->desc->event_name[strlen(COMPAT_SYSCALL_ENTRY_STR)]; } seq_printf(m, "syscall { index = %lu; name = %s; bitness = %u; };\n", @@ -1957,7 +1710,7 @@ long lttng_channel_syscall_mask(struct lttng_channel *channel, return -ENOMEM; filter = channel->sc_filter; - for (bit = 0; bit < ARRAY_SIZE(sc_table); bit++) { + for (bit = 0; bit < sc_table.len; bit++) { char state; if (channel->sc_table) { @@ -1978,9 +1731,9 @@ long lttng_channel_syscall_mask(struct lttng_channel *channel, if (channel->compat_sc_table) { if (!(READ_ONCE(channel->syscall_all_entry) || READ_ONCE(channel->syscall_all_exit)) && filter) - state = test_bit(bit - ARRAY_SIZE(sc_table), + state = test_bit(bit - sc_table.len, filter->sc_compat_entry) - || test_bit(bit - ARRAY_SIZE(sc_table), + || test_bit(bit - sc_table.len, filter->sc_compat_exit); else state = 1;