X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fkernel-ctl%2Fkernel-ctl.c;h=386685c2a593947b154bf87f91757a601d565d92;hp=6a256fefd00fa06b107c61aff78ea09151e63627;hb=2463b7879c00298daa79744cdaae82ac061a4ed8;hpb=f22dd89135f6b1749cd75735f04e3cb309da12c1 diff --git a/src/common/kernel-ctl/kernel-ctl.c b/src/common/kernel-ctl/kernel-ctl.c index 6a256fefd..386685c2a 100644 --- a/src/common/kernel-ctl/kernel-ctl.c +++ b/src/common/kernel-ctl/kernel-ctl.c @@ -1,30 +1,23 @@ /* - * Copyright (C) 2011 - Julien Desfossez - * Mathieu Desnoyers - * 2016 - Jérémie Galarneau + * Copyright (C) 2011 Julien Desfossez + * Copyright (C) 2011 Mathieu Desnoyers + * Copyright (C) 2016 Jérémie Galarneau * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2 only, - * as published by the Free Software Foundation. + * SPDX-License-Identifier: GPL-2.0-only * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ +#include "lttng/tracker.h" #define _LGPL_SOURCE #define __USE_LINUX_IOCTL_DEFS #include #include #include +#include #include #include #include +#include #include "kernel-ctl.h" #include "kernel-ioctl.h" @@ -228,6 +221,67 @@ int kernctl_list_tracker_pids(int fd) return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS); } +static enum lttng_kernel_tracker_type get_kernel_tracker_type( + enum lttng_process_attr process_attr) +{ + switch (process_attr) { + case LTTNG_PROCESS_ATTR_PROCESS_ID: + return LTTNG_KERNEL_TRACKER_PID; + case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: + return LTTNG_KERNEL_TRACKER_VPID; + case LTTNG_PROCESS_ATTR_USER_ID: + return LTTNG_KERNEL_TRACKER_UID; + case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: + return LTTNG_KERNEL_TRACKER_VUID; + case LTTNG_PROCESS_ATTR_GROUP_ID: + return LTTNG_KERNEL_TRACKER_GID; + case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: + return LTTNG_KERNEL_TRACKER_VGID; + default: + return LTTNG_KERNEL_TRACKER_UNKNOWN; + } +} + +int kernctl_track_id(int fd, enum lttng_process_attr process_attr, int id) +{ + struct lttng_kernel_tracker_args args; + + args.id = id; + args.type = get_kernel_tracker_type(process_attr); + if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) { + errno = EINVAL; + return -1; + } + return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_TRACK_ID, &args); +} + +int kernctl_untrack_id(int fd, enum lttng_process_attr process_attr, int id) +{ + struct lttng_kernel_tracker_args args; + + args.id = id; + args.type = get_kernel_tracker_type(process_attr); + if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) { + errno = EINVAL; + return -1; + } + return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_UNTRACK_ID, &args); +} + +int kernctl_list_tracker_ids(int fd, enum lttng_process_attr process_attr) +{ + struct lttng_kernel_tracker_args args; + + args.id = -1; + args.type = get_kernel_tracker_type(process_attr); + if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) { + errno = EINVAL; + return -1; + } + return LTTNG_IOCTL_NO_CHECK( + fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_IDS, &args); +} + int kernctl_session_regenerate_metadata(int fd) { return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_METADATA_REGEN); @@ -238,6 +292,39 @@ int kernctl_session_regenerate_statedump(int fd) return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_STATEDUMP); } +int kernctl_session_set_name(int fd, const char *name) +{ + int ret; + struct lttng_kernel_session_name session_name; + + ret = lttng_strncpy(session_name.name, name, sizeof(session_name.name)); + if (ret) { + goto end; + } + + ret = LTTNG_IOCTL_CHECK( + fd, LTTNG_KERNEL_SESSION_SET_NAME, &session_name); +end: + return ret; +} + +int kernctl_session_set_creation_time(int fd, time_t time) +{ + int ret; + struct lttng_kernel_session_creation_time creation_time; + + ret = time_to_iso8601_str(time, creation_time.iso8601, + sizeof(creation_time.iso8601)); + if (ret) { + goto end; + } + + ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_SET_CREATION_TIME, + &creation_time); +end: + return ret; +} + int kernctl_create_stream(int fd) { return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_STREAM, @@ -331,7 +418,51 @@ int kernctl_stop_session(int fd) LTTNG_KERNEL_SESSION_STOP); } -int kernctl_filter(int fd, struct lttng_filter_bytecode *filter) +int kernctl_create_trigger_group(int fd) +{ + return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_TRIGGER_GROUP_CREATE); +} + +int kernctl_create_trigger_group_notification_fd(int group_fd) +{ + return LTTNG_IOCTL_NO_CHECK(group_fd, LTTNG_KERNEL_TRIGGER_GROUP_NOTIFICATION_FD); +} + +int kernctl_create_trigger_group_error_counter(int group_fd, struct lttng_kernel_counter_conf *error_counter_conf) +{ + return LTTNG_IOCTL_NO_CHECK(group_fd, LTTNG_KERNEL_COUNTER, error_counter_conf); +} + +int kernctl_counter_get_value(int counter_fd, struct lttng_kernel_counter_value *value) +{ + return LTTNG_IOCTL_NO_CHECK(counter_fd, LTTNG_KERNEL_COUNTER_VALUE, value); +} + +int kernctl_create_trigger(int group_fd, struct lttng_kernel_trigger *trigger) +{ + return LTTNG_IOCTL_NO_CHECK(group_fd, LTTNG_KERNEL_TRIGGER_CREATE, trigger); +} + +int kernctl_capture(int fd, const struct lttng_bytecode *capture) +{ + struct lttng_kernel_capture_bytecode *kb; + uint32_t len; + int ret; + + /* Translate bytecode to kernel bytecode */ + kb = zmalloc(sizeof(*kb) + capture->len); + if (!kb) + return -ENOMEM; + kb->len = len = capture->len; + kb->reloc_offset = capture->reloc_table_offset; + kb->seqnum = capture->seqnum; + memcpy(kb->data, capture->data, len); + ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_CAPTURE, kb); + free(kb); + return ret; +} + +int kernctl_filter(int fd, const struct lttng_bytecode *filter) { struct lttng_kernel_filter_bytecode *kb; uint32_t len; @@ -350,6 +481,11 @@ int kernctl_filter(int fd, struct lttng_filter_bytecode *filter) return ret; } +int kernctl_add_callsite(int fd, struct lttng_kernel_event_callsite *callsite) +{ + return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ADD_CALLSITE, callsite); +} + int kernctl_tracepoint_list(int fd) { return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_TRACEPOINT_LIST, @@ -413,12 +549,28 @@ int kernctl_buffer_flush_empty(int fd) return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_FLUSH_EMPTY); } +int kernctl_buffer_clear(int fd) +{ + return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_CLEAR); +} + +int kernctl_get_next_subbuf_metadata_check(int fd, bool *consistent) +{ + return LTTNG_IOCTL_NO_CHECK(fd, + RING_RING_BUFFER_GET_NEXT_SUBBUF_METADATA_CHECK, + consistent); +} + /* returns the version of the metadata. */ int kernctl_get_metadata_version(int fd, uint64_t *version) { return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_METADATA_VERSION, version); } +int kernctl_metadata_cache_dump(int fd) +{ + return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_METADATA_CACHE_DUMP); +} /* Buffer operations */