X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust-ctl%2Fustctl.c;h=7a76b7dda32841c186e8cef862e0a4689e3c6a2f;hb=e695af517bcaa72a426cbb15d3b5b578e46eb320;hp=964a5586677a3dc4c68d9046a8fa9a51bac1b39c;hpb=9d335227b11499758dc06d97822ba2ebeeb0fd5c;p=lttng-ust.git diff --git a/liblttng-ust-ctl/ustctl.c b/liblttng-ust-ctl/ustctl.c index 964a5586..7a76b7dd 100644 --- a/liblttng-ust-ctl/ustctl.c +++ b/liblttng-ust-ctl/ustctl.c @@ -2,19 +2,18 @@ * Copyright (C) 2011 - Julien Desfossez * Mathieu Desnoyers * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; only version 2 - * of the License. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * 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. */ #define _GNU_SOURCE @@ -52,9 +51,8 @@ int ustctl_release_handle(int sock, int handle) lum.handle = handle; lum.cmd = LTTNG_UST_RELEASE; ret = ustcomm_send_app_cmd(sock, &lum, &lur); - if (ret < 0) { + if (ret) return ret; - } } return 0; } @@ -66,15 +64,20 @@ int ustctl_release_object(int sock, struct lttng_ust_object_data *data) { int ret; + if (!data) + return -EINVAL; + if (data->shm_fd >= 0) { ret = close(data->shm_fd); if (ret < 0) { + ret = -errno; return ret; } } if (data->wait_fd >= 0) { ret = close(data->wait_fd); if (ret < 0) { + ret = -errno; return ret; } } @@ -97,14 +100,7 @@ int ustctl_register_done(int sock) ret = ustcomm_send_app_cmd(sock, &lum, &lur); if (ret) return ret; - if (lur.ret_code != USTCOMM_OK) { - DBG("Return code: %s", ustcomm_get_readable_code(lur.ret_code)); - goto error; - } return 0; - -error: - return -1; } /* @@ -138,6 +134,9 @@ int ustctl_open_metadata(int sock, int session_handle, struct lttng_ust_object_data *metadata_data; int ret, err = 0; + if (!chops || !_metadata_data) + return -EINVAL; + metadata_data = malloc(sizeof(*metadata_data)); if (!metadata_data) return -ENOMEM; @@ -157,17 +156,13 @@ int ustctl_open_metadata(int sock, int session_handle, free(metadata_data); return ret; } - if (lur.ret_code != USTCOMM_OK) { - free(metadata_data); - return lur.ret_code; - } metadata_data->handle = lur.ret_val; DBG("received metadata handle %u", metadata_data->handle); metadata_data->memory_map_size = lur.u.channel.memory_map_size; /* get shm fd */ ret = ustcomm_recv_fd(sock); if (ret < 0) - err = 1; + err = ret; else metadata_data->shm_fd = ret; /* @@ -177,7 +172,7 @@ int ustctl_open_metadata(int sock, int session_handle, /* get wait fd */ ret = ustcomm_recv_fd(sock); if (ret < 0) - err = 1; + err = ret; else metadata_data->wait_fd = ret; if (err) @@ -188,7 +183,7 @@ int ustctl_open_metadata(int sock, int session_handle, error: (void) ustctl_release_object(sock, metadata_data); free(metadata_data); - return -EINVAL; + return err; } int ustctl_create_channel(int sock, int session_handle, @@ -200,6 +195,9 @@ int ustctl_create_channel(int sock, int session_handle, struct lttng_ust_object_data *channel_data; int ret, err = 0; + if (!chops || !_channel_data) + return -EINVAL; + channel_data = malloc(sizeof(*channel_data)); if (!channel_data) return -ENOMEM; @@ -219,17 +217,13 @@ int ustctl_create_channel(int sock, int session_handle, free(channel_data); return ret; } - if (lur.ret_code != USTCOMM_OK) { - free(channel_data); - return lur.ret_code; - } channel_data->handle = lur.ret_val; DBG("received channel handle %u", channel_data->handle); channel_data->memory_map_size = lur.u.channel.memory_map_size; /* get shm fd */ ret = ustcomm_recv_fd(sock); if (ret < 0) - err = 1; + err = ret; else channel_data->shm_fd = ret; /* @@ -239,7 +233,7 @@ int ustctl_create_channel(int sock, int session_handle, /* get wait fd */ ret = ustcomm_recv_fd(sock); if (ret < 0) - err = 1; + err = ret; else channel_data->wait_fd = ret; if (err) @@ -250,13 +244,14 @@ int ustctl_create_channel(int sock, int session_handle, error: (void) ustctl_release_object(sock, channel_data); free(channel_data); - return -EINVAL; + return err; } /* * Return -ENOENT if no more stream is available for creation. * Return 0 on success. - * Return negative error value on error. + * Return negative error value on system error. + * Return positive error value on UST error. */ int ustctl_create_stream(int sock, struct lttng_ust_object_data *channel_data, struct lttng_ust_object_data **_stream_data) @@ -266,6 +261,9 @@ int ustctl_create_stream(int sock, struct lttng_ust_object_data *channel_data, struct lttng_ust_object_data *stream_data; int ret, fd, err = 0; + if (!channel_data || !_stream_data) + return -EINVAL; + stream_data = malloc(sizeof(*stream_data)); if (!stream_data) return -ENOMEM; @@ -278,18 +276,13 @@ int ustctl_create_stream(int sock, struct lttng_ust_object_data *channel_data, free(stream_data); return ret; } - if (lur.ret_code != USTCOMM_OK) { - free(stream_data); - return lur.ret_code; - } - stream_data->handle = lur.ret_val; DBG("received stream handle %u", stream_data->handle); stream_data->memory_map_size = lur.u.stream.memory_map_size; /* get shm fd */ fd = ustcomm_recv_fd(sock); if (fd < 0) - err = 1; + err = fd; else stream_data->shm_fd = fd; /* @@ -299,7 +292,7 @@ int ustctl_create_stream(int sock, struct lttng_ust_object_data *channel_data, /* get wait fd */ fd = ustcomm_recv_fd(sock); if (fd < 0) - err = 1; + err = fd; else stream_data->wait_fd = fd; if (err) @@ -310,7 +303,7 @@ int ustctl_create_stream(int sock, struct lttng_ust_object_data *channel_data, error: (void) ustctl_release_object(sock, stream_data); free(stream_data); - return -EINVAL; + return err; } int ustctl_create_event(int sock, struct lttng_ust_event *ev, @@ -322,6 +315,9 @@ int ustctl_create_event(int sock, struct lttng_ust_event *ev, struct lttng_ust_object_data *event_data; int ret; + if (!channel_data || !_event_data) + return -EINVAL; + event_data = malloc(sizeof(*event_data)); if (!event_data) return -ENOMEM; @@ -354,6 +350,9 @@ int ustctl_add_context(int sock, struct lttng_ust_context *ctx, struct lttng_ust_object_data *context_data; int ret; + if (!obj_data || !_context_data) + return -EINVAL; + context_data = malloc(sizeof(*context_data)); if (!context_data) return -ENOMEM; @@ -373,6 +372,39 @@ int ustctl_add_context(int sock, struct lttng_ust_context *ctx, return ret; } +int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode, + struct lttng_ust_object_data *obj_data) +{ + struct ustcomm_ust_msg lum; + struct ustcomm_ust_reply lur; + int ret; + + if (!obj_data) + return -EINVAL; + + memset(&lum, 0, sizeof(lum)); + lum.handle = obj_data->handle; + lum.cmd = LTTNG_UST_FILTER; + lum.u.filter.data_size = bytecode->len; + lum.u.filter.reloc_offset = bytecode->reloc_offset; + lum.u.filter.seqnum = bytecode->seqnum; + + ret = ustcomm_send_app_msg(sock, &lum); + if (ret) + return ret; + /* send var len bytecode */ + ret = ustcomm_send_unix_sock(sock, bytecode->data, + bytecode->len); + if (ret < 0) { + if (ret == -ECONNRESET) + fprintf(stderr, "remote end closed connection\n"); + return ret; + } + if (ret != bytecode->len) + return -EINVAL; + return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); +} + /* Enable event, channel and session ioctl */ int ustctl_enable(int sock, struct lttng_ust_object_data *object) { @@ -380,6 +412,9 @@ int ustctl_enable(int sock, struct lttng_ust_object_data *object) struct ustcomm_ust_reply lur; int ret; + if (!object) + return -EINVAL; + memset(&lum, 0, sizeof(lum)); lum.handle = object->handle; lum.cmd = LTTNG_UST_ENABLE; @@ -397,6 +432,9 @@ int ustctl_disable(int sock, struct lttng_ust_object_data *object) struct ustcomm_ust_reply lur; int ret; + if (!object) + return -EINVAL; + memset(&lum, 0, sizeof(lum)); lum.handle = object->handle; lum.cmd = LTTNG_UST_DISABLE; @@ -447,6 +485,9 @@ int ustctl_tracepoint_list_get(int sock, int tp_list_handle, struct ustcomm_ust_reply lur; int ret; + if (!iter) + return -EINVAL; + memset(&lum, 0, sizeof(lum)); lum.handle = tp_list_handle; lum.cmd = LTTNG_UST_TRACEPOINT_LIST_GET; @@ -460,12 +501,61 @@ int ustctl_tracepoint_list_get(int sock, int tp_list_handle, return 0; } +int ustctl_tracepoint_field_list(int sock) +{ + struct ustcomm_ust_msg lum; + struct ustcomm_ust_reply lur; + int ret, tp_field_list_handle; + + memset(&lum, 0, sizeof(lum)); + lum.handle = LTTNG_UST_ROOT_HANDLE; + lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST; + ret = ustcomm_send_app_cmd(sock, &lum, &lur); + if (ret) + return ret; + tp_field_list_handle = lur.ret_val; + DBG("received tracepoint field list handle %u", tp_field_list_handle); + return tp_field_list_handle; +} + +int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, + struct lttng_ust_field_iter *iter) +{ + struct ustcomm_ust_msg lum; + struct ustcomm_ust_reply lur; + int ret; + ssize_t len; + + if (!iter) + return -EINVAL; + + memset(&lum, 0, sizeof(lum)); + lum.handle = tp_field_list_handle; + lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST_GET; + ret = ustcomm_send_app_cmd(sock, &lum, &lur); + if (ret) + return ret; + len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter)); + if (len != sizeof(*iter)) { + return -EINVAL; + } + DBG("received tracepoint field list entry event_name %s event_loglevel %d field_name %s field_type %d", + iter->event_name, + iter->loglevel, + iter->field_name, + iter->type); + return 0; +} + int ustctl_tracer_version(int sock, struct lttng_ust_tracer_version *v) { struct ustcomm_ust_msg lum; struct ustcomm_ust_reply lur; int ret; + if (!v) + return -EINVAL; + memset(&lum, 0, sizeof(lum)); lum.handle = LTTNG_UST_ROOT_HANDLE; lum.cmd = LTTNG_UST_TRACER_VERSION; @@ -495,6 +585,9 @@ int ustctl_wait_quiescent(int sock) int ustctl_calibrate(int sock, struct lttng_ust_calibrate *calibrate) { + if (!calibrate) + return -EINVAL; + return -ENOSYS; } @@ -504,6 +597,9 @@ int ustctl_sock_flush_buffer(int sock, struct lttng_ust_object_data *object) struct ustcomm_ust_reply lur; int ret; + if (!object) + return -EINVAL; + memset(&lum, 0, sizeof(lum)); lum.handle = object->handle; lum.cmd = LTTNG_UST_FLUSH_BUFFER; @@ -525,6 +621,9 @@ struct lttng_ust_shm_handle *ustctl_map_channel(struct lttng_ust_object_data *ch struct lttng_ust_lib_ring_buffer_config *config; int ret; + if (!chan_data) + return NULL; + handle = channel_handle_create(chan_data->shm_fd, chan_data->wait_fd, chan_data->memory_map_size); @@ -606,6 +705,9 @@ int ustctl_add_stream(struct lttng_ust_shm_handle *handle, { int ret; + if (!handle || !stream_data) + return -EINVAL; + if (!stream_data->handle) return -ENOENT; /* map stream */ @@ -630,6 +732,7 @@ void ustctl_unmap_channel(struct lttng_ust_shm_handle *handle) { struct channel *chan; + assert(handle); chan = shmp(handle, handle->chan); channel_destroy(chan, handle, 1); } @@ -640,12 +743,16 @@ void ustctl_unmap_channel(struct lttng_ust_shm_handle *handle) struct lttng_ust_lib_ring_buffer *ustctl_open_stream_read(struct lttng_ust_shm_handle *handle, int cpu) { - struct channel *chan = handle->shadow_chan; + struct channel *chan; int *shm_fd, *wait_fd; uint64_t *memory_map_size; struct lttng_ust_lib_ring_buffer *buf; int ret; + if (!handle) + return NULL; + + chan = handle->shadow_chan; buf = channel_get_ring_buffer(&chan->backend.config, chan, cpu, handle, &shm_fd, &wait_fd, &memory_map_size); if (!buf) @@ -669,6 +776,7 @@ struct lttng_ust_lib_ring_buffer *ustctl_open_stream_read(struct lttng_ust_shm_h void ustctl_close_stream_read(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf) { + assert(handle && buf); lib_ring_buffer_release_read(buf, handle, 1); } @@ -677,6 +785,8 @@ void ustctl_close_stream_read(struct lttng_ust_shm_handle *handle, void *ustctl_get_mmap_base(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf) { + if (!handle || !buf) + return NULL; return shmp(handle, buf->backend.memory_map); } @@ -686,8 +796,12 @@ int ustctl_get_mmap_len(struct lttng_ust_shm_handle *handle, unsigned long *len) { unsigned long mmap_buf_len; - struct channel *chan = handle->shadow_chan; + struct channel *chan; + + if (!handle || !buf || !len) + return -EINVAL; + chan = handle->shadow_chan; if (chan->backend.config.output != RING_BUFFER_MMAP) return -EINVAL; mmap_buf_len = chan->backend.buf_size; @@ -704,8 +818,12 @@ int ustctl_get_max_subbuf_size(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf, unsigned long *len) { - struct channel *chan = handle->shadow_chan; + struct channel *chan; + if (!handle || !buf || !len) + return -EINVAL; + + chan = handle->shadow_chan; *len = chan->backend.subbuf_size; return 0; } @@ -719,9 +837,13 @@ int ustctl_get_max_subbuf_size(struct lttng_ust_shm_handle *handle, int ustctl_get_mmap_read_offset(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf, unsigned long *off) { - struct channel *chan = handle->shadow_chan; + struct channel *chan; unsigned long sb_bindex; + if (!handle || !buf || !off) + return -EINVAL; + + chan = handle->shadow_chan; if (chan->backend.config.output != RING_BUFFER_MMAP) return -EINVAL; sb_bindex = subbuffer_id_get_index(&chan->backend.config, @@ -734,8 +856,12 @@ int ustctl_get_mmap_read_offset(struct lttng_ust_shm_handle *handle, int ustctl_get_subbuf_size(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf, unsigned long *len) { - struct channel *chan = handle->shadow_chan; + struct channel *chan; + + if (!handle || !buf || !len) + return -EINVAL; + chan = handle->shadow_chan; *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, handle); return 0; @@ -745,8 +871,12 @@ int ustctl_get_subbuf_size(struct lttng_ust_shm_handle *handle, int ustctl_get_padded_subbuf_size(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf, unsigned long *len) { - struct channel *chan = handle->shadow_chan; + struct channel *chan; + + if (!handle || !buf || !len) + return -EINVAL; + chan = handle->shadow_chan; *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, handle); *len = PAGE_ALIGN(*len); @@ -757,6 +887,9 @@ int ustctl_get_padded_subbuf_size(struct lttng_ust_shm_handle *handle, int ustctl_get_next_subbuf(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf) { + if (!handle || !buf) + return -EINVAL; + return lib_ring_buffer_get_next_subbuf(buf, handle); } @@ -765,6 +898,9 @@ int ustctl_get_next_subbuf(struct lttng_ust_shm_handle *handle, int ustctl_put_next_subbuf(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf) { + if (!handle || !buf) + return -EINVAL; + lib_ring_buffer_put_next_subbuf(buf, handle); return 0; } @@ -775,6 +911,9 @@ int ustctl_put_next_subbuf(struct lttng_ust_shm_handle *handle, int ustctl_snapshot(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf) { + if (!handle || !buf) + return -EINVAL; + return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot, &buf->prod_snapshot, handle); } @@ -783,6 +922,9 @@ int ustctl_snapshot(struct lttng_ust_shm_handle *handle, int ustctl_snapshot_get_consumed(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf, unsigned long *pos) { + if (!handle || !buf || !pos) + return -EINVAL; + *pos = buf->cons_snapshot; return 0; } @@ -791,6 +933,9 @@ int ustctl_snapshot_get_consumed(struct lttng_ust_shm_handle *handle, int ustctl_snapshot_get_produced(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf, unsigned long *pos) { + if (!handle || !buf || !pos) + return -EINVAL; + *pos = buf->prod_snapshot; return 0; } @@ -799,6 +944,9 @@ int ustctl_snapshot_get_produced(struct lttng_ust_shm_handle *handle, int ustctl_get_subbuf(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf, unsigned long *pos) { + if (!handle || !buf || !pos) + return -EINVAL; + return lib_ring_buffer_get_subbuf(buf, *pos, handle); } @@ -806,6 +954,9 @@ int ustctl_get_subbuf(struct lttng_ust_shm_handle *handle, int ustctl_put_subbuf(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf) { + if (!handle || !buf) + return -EINVAL; + lib_ring_buffer_put_subbuf(buf, handle); return 0; } @@ -814,6 +965,7 @@ void ustctl_flush_buffer(struct lttng_ust_shm_handle *handle, struct lttng_ust_lib_ring_buffer *buf, int producer_active) { + assert(handle && buf); lib_ring_buffer_switch_slow(buf, producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH, handle);