X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fenable_channels.c;h=692480e816f28c2e2d808d326a8520c2a59e750d;hp=52745f69a651d61ec91f18ca1b8cff81bf0c9d6a;hb=5853fd43129ab32dd54fff779076c67234eb73dc;hpb=10a8a2237343699e3923d87e24dbf2d7fe225377 diff --git a/src/bin/lttng/commands/enable_channels.c b/src/bin/lttng/commands/enable_channels.c index 52745f69a..692480e81 100644 --- a/src/bin/lttng/commands/enable_channels.c +++ b/src/bin/lttng/commands/enable_channels.c @@ -26,18 +26,18 @@ #include #include -#include "../cmd.h" -#include "../conf.h" -#include "../utils.h" +#include "../command.h" static char *opt_channels; static int opt_kernel; -static char *opt_cmd_name; static char *opt_session_name; static int opt_userspace; +static struct lttng_channel chan; +#if 0 +/* Not implemented yet */ static char *opt_cmd_name; static pid_t opt_pid; -static struct lttng_channel chan; +#endif enum { OPT_HELP = 1, @@ -48,6 +48,7 @@ enum { OPT_SWITCH_TIMER, OPT_READ_TIMER, OPT_USERSPACE, + OPT_LIST_OPTIONS, }; static struct lttng_handle *handle; @@ -57,14 +58,20 @@ static struct poptOption long_options[] = { {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, +#if 0 + /* Not implemented yet */ {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, +#else + {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, +#endif {"discard", 0, POPT_ARG_NONE, 0, OPT_DISCARD, 0, 0}, {"overwrite", 0, POPT_ARG_NONE, 0, OPT_OVERWRITE, 0, 0}, {"subbuf-size", 0, POPT_ARG_DOUBLE, 0, OPT_SUBBUF_SIZE, 0, 0}, {"num-subbuf", 0, POPT_ARG_INT, 0, OPT_NUM_SUBBUF, 0, 0}, {"switch-timer", 0, POPT_ARG_INT, 0, OPT_SWITCH_TIMER, 0, 0}, {"read-timer", 0, POPT_ARG_INT, 0, OPT_READ_TIMER, 0, 0}, + {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, {0, 0, 0, 0, 0, 0, 0} }; @@ -76,29 +83,34 @@ static void usage(FILE *ofp) fprintf(ofp, "usage: lttng enable-channel NAME[,NAME2,...] [options] [channel_options]\n"); fprintf(ofp, "\n"); fprintf(ofp, " -h, --help Show this help\n"); - fprintf(ofp, " -s, --session Apply on session name\n"); - fprintf(ofp, " -k, --kernel Apply on the kernel tracer\n"); - fprintf(ofp, " -u, --userspace [CMD] Apply for the user-space tracer\n"); + fprintf(ofp, " --list-options Simple listing of options\n"); + fprintf(ofp, " -s, --session Apply to session name\n"); + fprintf(ofp, " -k, --kernel Apply to the kernel tracer\n"); +#if 0 + fprintf(ofp, " -u, --userspace [CMD] Apply to the user-space tracer\n"); fprintf(ofp, " If no CMD, the domain used is UST global\n"); fprintf(ofp, " or else the domain is UST EXEC_NAME\n"); fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\n"); +#else + fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); +#endif fprintf(ofp, "\n"); fprintf(ofp, "Channel options:\n"); fprintf(ofp, " --discard Discard event when buffers are full%s\n", DEFAULT_CHANNEL_OVERWRITE ? "" : " (default)"); fprintf(ofp, " --overwrite Flight recorder mode%s\n", DEFAULT_CHANNEL_OVERWRITE ? " (default)" : ""); - fprintf(ofp, " --subbuf-size Subbuffer size in bytes\n"); + fprintf(ofp, " --subbuf-size SIZE Subbuffer size in bytes\n"); fprintf(ofp, " (default: %u, kernel default: %u)\n", DEFAULT_CHANNEL_SUBBUF_SIZE, DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE); - fprintf(ofp, " --num-subbuf Number of subbufers\n"); + fprintf(ofp, " --num-subbuf NUM Number of subbufers\n"); fprintf(ofp, " (default: %u, kernel default: %u)\n", DEFAULT_CHANNEL_SUBBUF_NUM, DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM); - fprintf(ofp, " --switch-timer Switch timer interval in usec (default: %u)\n", + fprintf(ofp, " --switch-timer USEC Switch timer interval in usec (default: %u)\n", DEFAULT_CHANNEL_SWITCH_TIMER); - fprintf(ofp, " --read-timer Read timer interval in usec (default: %u)\n", + fprintf(ofp, " --read-timer USEC Read timer interval in usec (default: %u)\n", DEFAULT_CHANNEL_READ_TIMER); fprintf(ofp, "\n"); } @@ -139,24 +151,18 @@ static void set_default_attr(struct lttng_domain *dom) */ static int enable_channel(char *session_name) { - int ret = CMD_SUCCESS; + int ret = CMD_SUCCESS, warn = 0; char *channel_name; struct lttng_domain dom; + /* Create lttng domain */ if (opt_kernel) { dom.type = LTTNG_DOMAIN_KERNEL; - } else if (opt_pid != 0) { - dom.type = LTTNG_DOMAIN_UST_PID; - dom.attr.pid = opt_pid; - DBG("PID %d set to lttng handle", opt_pid); - } else if (opt_userspace && opt_cmd_name == NULL) { + } else if (opt_userspace) { dom.type = LTTNG_DOMAIN_UST; - } else if (opt_userspace && opt_cmd_name != NULL) { - dom.type = LTTNG_DOMAIN_UST_EXEC_NAME; - strncpy(dom.attr.exec_name, opt_cmd_name, NAME_MAX); } else { ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); - ret = CMD_NOT_IMPLEMENTED; + ret = CMD_ERROR; goto error; } @@ -179,7 +185,9 @@ static int enable_channel(char *session_name) ret = lttng_enable_channel(handle, &chan); if (ret < 0) { - goto error; + ERR("Channel %s: %s (session %s)", channel_name, + lttng_strerror(ret), session_name); + warn = 1; } else { MSG("%s channel %s enabled for session %s", opt_kernel ? "Kernel" : "UST", channel_name, @@ -190,7 +198,13 @@ static int enable_channel(char *session_name) channel_name = strtok(NULL, ","); } + ret = CMD_SUCCESS; + error: + if (warn) { + ret = CMD_WARNING; + } + lttng_destroy_handle(handle); return ret; @@ -213,7 +227,7 @@ static void init_channel_config(void) */ int cmd_enable_channels(int argc, const char **argv) { - int opt, ret; + int opt, ret = CMD_SUCCESS; static poptContext pc; char *session_name = NULL; @@ -225,8 +239,7 @@ int cmd_enable_channels(int argc, const char **argv) while ((opt = poptGetNextOpt(pc)) != -1) { switch (opt) { case OPT_HELP: - usage(stderr); - ret = CMD_SUCCESS; + usage(stdout); goto end; case OPT_DISCARD: chan.attr.overwrite = 0; @@ -237,24 +250,31 @@ int cmd_enable_channels(int argc, const char **argv) DBG("Channel set to overwrite"); break; case OPT_SUBBUF_SIZE: + /* TODO Replace atol with strtol and check for errors */ chan.attr.subbuf_size = atol(poptGetOptArg(pc)); DBG("Channel subbuf size set to %" PRIu64, chan.attr.subbuf_size); break; case OPT_NUM_SUBBUF: + /* TODO Replace atoi with strtol and check for errors */ chan.attr.num_subbuf = atoi(poptGetOptArg(pc)); DBG("Channel subbuf num set to %" PRIu64, chan.attr.num_subbuf); break; case OPT_SWITCH_TIMER: + /* TODO Replace atoi with strtol and check for errors */ chan.attr.switch_timer_interval = atoi(poptGetOptArg(pc)); DBG("Channel switch timer interval set to %d", chan.attr.switch_timer_interval); break; case OPT_READ_TIMER: + /* TODO Replace atoi with strtol and check for errors */ chan.attr.read_timer_interval = atoi(poptGetOptArg(pc)); DBG("Channel read timer interval set to %d", chan.attr.read_timer_interval); break; case OPT_USERSPACE: opt_userspace = 1; break; + case OPT_LIST_OPTIONS: + list_cmd_options(stdout, long_options); + goto end; default: usage(stderr); ret = CMD_UNDEFINED; @@ -266,14 +286,14 @@ int cmd_enable_channels(int argc, const char **argv) if (opt_channels == NULL) { ERR("Missing channel name.\n"); usage(stderr); - ret = CMD_SUCCESS; + ret = CMD_ERROR; goto end; } if (!opt_session_name) { session_name = get_session_name(); if (session_name == NULL) { - ret = -1; + ret = CMD_ERROR; goto end; } } else { @@ -283,5 +303,9 @@ int cmd_enable_channels(int argc, const char **argv) ret = enable_channel(session_name); end: + if (!opt_session_name && session_name) { + free(session_name); + } + poptFreeContext(pc); return ret; }