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session.cxx
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// session functions
// Copyright (C) 2010-2015 Red Hat Inc.
//
// This file is part of systemtap, and is free software. You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.
#include "config.h"
#include "session.h"
#include "cache.h"
#include "stapregex.h"
#include "elaborate.h"
#include "translate.h"
#include "buildrun.h"
#include "coveragedb.h"
#include "hash.h"
#include "task_finder.h"
#include "csclient.h"
#include "rpm_finder.h"
#include "util.h"
#include "cmdline.h"
#include "git_version.h"
#include "version.h"
#include "stringtable.h"
#include <cerrno>
#include <cstdlib>
extern "C" {
#include <getopt.h>
#include <limits.h>
#include <grp.h>
#include <sys/stat.h>
#include <sys/utsname.h>
#include <sys/resource.h>
#include <elfutils/libdwfl.h>
#include <elfutils/version.h>
#include <unistd.h>
#include <sys/wait.h>
#include <wordexp.h>
}
#if HAVE_NSS
extern "C" {
#include <nspr.h>
}
#endif
#include <string>
using namespace std;
/* getopt variables */
extern int optind;
#define PATH_TBD string("__TBD__")
#if HAVE_NSS
bool systemtap_session::NSPR_Initialized = false;
#endif
systemtap_session::systemtap_session ():
// NB: pointer members must be manually initialized!
// NB: don't forget the copy constructor too!
runtime_mode(kernel_runtime),
base_hash(0),
pattern_root(new match_node),
dfa_counter (0),
dfa_maxstate (0),
dfa_maxtag (0),
need_tagged_dfa (false),
be_derived_probes(0),
dwarf_derived_probes(0),
kprobe_derived_probes(0),
hwbkpt_derived_probes(0),
perf_derived_probes(0),
uprobe_derived_probes(0),
utrace_derived_probes(0),
itrace_derived_probes(0),
task_finder_derived_probes(0),
timer_derived_probes(0),
netfilter_derived_probes(0),
profile_derived_probes(0),
mark_derived_probes(0),
tracepoint_derived_probes(0),
hrtimer_derived_probes(0),
procfs_derived_probes(0),
dynprobe_derived_probes(0),
op (0), up (0),
sym_kprobes_text_start (0),
sym_kprobes_text_end (0),
sym_stext (0),
module_cache (0),
benchmark_sdt_loops(0),
benchmark_sdt_threads(0),
suppressed_warnings(0),
suppressed_errors(0),
warningerr_count(0),
target_namespaces_pid(0),
last_token (0)
{
struct utsname buf;
(void) uname (& buf);
kernel_release = string (buf.release);
release = kernel_release;
kernel_build_tree = "/lib/modules/" + kernel_release + "/build";
architecture = machine = normalize_machine(buf.machine);
for (unsigned i=0; i<5; i++) perpass_verbose[i]=0;
verbose = 0;
have_script = false;
runtime_specified = false;
include_arg_start = -1;
timing = false;
guru_mode = false;
bulk_mode = false;
unoptimized = false;
suppress_warnings = false;
panic_warnings = false;
dump_mode = systemtap_session::dump_none;
dump_matched_pattern = "";
#ifdef ENABLE_PROLOGUES
prologue_searching_mode = prologue_searching_always;
#else
prologue_searching_mode = prologue_searching_auto;
#endif
buffer_size = 0;
last_pass = 5;
module_name = "stap_" + lex_cast(getpid());
stapconf_name = "stapconf_" + lex_cast(getpid()) + ".h";
output_file = ""; // -o FILE
tmpdir_opt_set = false;
save_module = false;
save_uprobes = false;
modname_given = false;
keep_tmpdir = false;
cmd = "";
target_pid = 0;
use_cache = true;
use_script_cache = true;
poison_cache = false;
tapset_compile_coverage = false;
need_uprobes = false;
need_unwind = false;
need_symbols = false;
need_lines = false;
uprobes_path = "";
load_only = false;
skip_badvars = false;
privilege = pr_stapdev;
privilege_set = false;
omit_werror = false;
compatible = VERSION; // XXX: perhaps also process GIT_SHAID if available?
unwindsym_ldd = false;
client_options = false;
server_cache = NULL;
auto_privilege_level_msg = "";
auto_server_msgs.clear ();
use_server_on_error = false;
try_server_status = try_server_unset;
use_remote_prefix = false;
systemtap_v_check = false;
download_dbinfo = 0;
suppress_handler_errors = false;
native_build = true; // presumed
sysroot = "";
update_release_sysroot = false;
suppress_time_limits = false;
target_namespaces_pid = 0;
color_mode = color_auto;
color_errors = isatty(STDERR_FILENO) // conditions for coloring when
&& strcmp(getenv("TERM") ?: "notdumb", "dumb"); // on auto
// PR12443: put compiled-in / -I paths in front, to be preferred during
// tapset duplicate-file elimination
const char* s_p = getenv ("SYSTEMTAP_TAPSET");
if (s_p != NULL)
{
include_path.push_back (s_p);
}
else
{
include_path.push_back (string(PKGDATADIR) + "/tapset");
}
/* adding in the XDG_DATA_DIRS variable path,
* this searches in conjunction with SYSTEMTAP_TAPSET
* to locate stap scripts, either can be disabled if
* needed using env $PATH=/dev/null where $PATH is the
* path you want disabled
*/
const char* s_p1 = getenv ("XDG_DATA_DIRS");
if ( s_p1 != NULL )
{
vector<string> dirs;
tokenize(s_p1, dirs, ":");
for(vector<string>::iterator i = dirs.begin(); i != dirs.end(); ++i)
{
include_path.push_back(*i + "/systemtap/tapset");
}
}
const char* s_r = getenv ("SYSTEMTAP_RUNTIME");
if (s_r != NULL)
runtime_path = s_r;
else
runtime_path = string(PKGDATADIR) + "/runtime";
const char* s_d = getenv ("SYSTEMTAP_DIR");
if (s_d != NULL)
data_path = s_d;
else
data_path = get_home_directory() + string("/.systemtap");
if (create_dir(data_path.c_str()) == 1)
{
const char* e = strerror (errno);
print_warning("failed to create systemtap data directory \"" + data_path + "\" " + e + ", disabling cache support.");
use_cache = use_script_cache = false;
}
if (use_cache)
{
cache_path = data_path + "/cache";
if (create_dir(cache_path.c_str()) == 1)
{
const char* e = strerror (errno);
print_warning("failed to create cache directory (\" " + cache_path + " \") " + e + ", disabling cache support.");
use_cache = use_script_cache = false;
}
}
const char* s_tc = getenv ("SYSTEMTAP_COVERAGE");
if (s_tc != NULL)
tapset_compile_coverage = true;
const char* s_kr = getenv ("SYSTEMTAP_RELEASE");
if (s_kr != NULL) {
setup_kernel_release(s_kr);
}
create_tmp_dir();
}
systemtap_session::systemtap_session (const systemtap_session& other,
const string& arch,
const string& kern):
// NB: pointer members must be manually initialized!
// NB: this needs to consider everything that the base ctor does,
// plus copying any wanted implicit fields (strings, vectors, etc.)
runtime_mode(other.runtime_mode),
base_hash(0),
pattern_root(new match_node),
user_files (other.user_files),
dfa_counter(0),
dfa_maxstate (0),
dfa_maxtag (0),
need_tagged_dfa(other.need_tagged_dfa),
be_derived_probes(0),
dwarf_derived_probes(0),
kprobe_derived_probes(0),
hwbkpt_derived_probes(0),
perf_derived_probes(0),
uprobe_derived_probes(0),
utrace_derived_probes(0),
itrace_derived_probes(0),
task_finder_derived_probes(0),
timer_derived_probes(0),
netfilter_derived_probes(0),
profile_derived_probes(0),
mark_derived_probes(0),
tracepoint_derived_probes(0),
hrtimer_derived_probes(0),
procfs_derived_probes(0),
dynprobe_derived_probes(0),
op (0), up (0),
sym_kprobes_text_start (0),
sym_kprobes_text_end (0),
sym_stext (0),
module_cache (0),
benchmark_sdt_loops(other.benchmark_sdt_loops),
benchmark_sdt_threads(other.benchmark_sdt_threads),
suppressed_warnings(0),
suppressed_errors(0),
warningerr_count(0),
target_namespaces_pid(0),
last_token (0)
{
release = kernel_release = kern;
kernel_build_tree = "/lib/modules/" + kernel_release + "/build";
architecture = machine = normalize_machine(arch);
setup_kernel_release(kern.c_str());
native_build = false; // assumed; XXX: could be computed as in check_options()
// These are all copied in the same order as the default ctor did above.
copy(other.perpass_verbose, other.perpass_verbose + 5, perpass_verbose);
verbose = other.verbose;
have_script = other.have_script;
runtime_specified = other.runtime_specified;
include_arg_start = other.include_arg_start;
timing = other.timing;
guru_mode = other.guru_mode;
bulk_mode = other.bulk_mode;
unoptimized = other.unoptimized;
suppress_warnings = other.suppress_warnings;
panic_warnings = other.panic_warnings;
dump_mode = other.dump_mode;
dump_matched_pattern = other.dump_matched_pattern;
prologue_searching_mode = other.prologue_searching_mode;
buffer_size = other.buffer_size;
last_pass = other.last_pass;
module_name = other.module_name;
stapconf_name = other.stapconf_name;
output_file = other.output_file; // XXX how should multiple remotes work?
tmpdir_opt_set = false;
save_module = other.save_module;
save_uprobes = other.save_uprobes;
modname_given = other.modname_given;
keep_tmpdir = other.keep_tmpdir;
cmd = other.cmd;
target_pid = other.target_pid; // XXX almost surely nonsense for multiremote
use_cache = other.use_cache;
use_script_cache = other.use_script_cache;
poison_cache = other.poison_cache;
tapset_compile_coverage = other.tapset_compile_coverage;
need_uprobes = false;
need_unwind = false;
need_symbols = false;
need_lines = false;
uprobes_path = "";
load_only = other.load_only;
skip_badvars = other.skip_badvars;
privilege = other.privilege;
privilege_set = other.privilege_set;
omit_werror = other.omit_werror;
compatible = other.compatible;
unwindsym_ldd = other.unwindsym_ldd;
client_options = other.client_options;
server_cache = NULL;
use_server_on_error = other.use_server_on_error;
try_server_status = other.try_server_status;
use_remote_prefix = other.use_remote_prefix;
systemtap_v_check = other.systemtap_v_check;
download_dbinfo = other.download_dbinfo;
suppress_handler_errors = other.suppress_handler_errors;
sysroot = other.sysroot;
update_release_sysroot = other.update_release_sysroot;
sysenv = other.sysenv;
suppress_time_limits = other.suppress_time_limits;
color_errors = other.color_errors;
color_mode = other.color_mode;
include_path = other.include_path;
runtime_path = other.runtime_path;
// NB: assuming that "other" created these already
data_path = other.data_path;
cache_path = other.cache_path;
tapset_compile_coverage = other.tapset_compile_coverage;
// These are fields that were left to their default ctor, but now we want to
// copy them from "other". In the same order as declared...
script_file = other.script_file;
cmdline_script = other.cmdline_script;
additional_scripts = other.additional_scripts;
c_macros = other.c_macros;
args = other.args;
kbuildflags = other.kbuildflags;
globalopts = other.globalopts;
modinfos = other.modinfos;
client_options_disallowed_for_unprivileged = other.client_options_disallowed_for_unprivileged;
server_status_strings = other.server_status_strings;
specified_servers = other.specified_servers;
server_trust_spec = other.server_trust_spec;
server_args = other.server_args;
mok_fingerprints = other.mok_fingerprints;
unwindsym_modules = other.unwindsym_modules;
auto_privilege_level_msg = other.auto_privilege_level_msg;
auto_server_msgs = other.auto_server_msgs;
create_tmp_dir();
}
systemtap_session::~systemtap_session ()
{
remove_tmp_dir();
delete_map(subsessions);
delete pattern_root;
}
const string
systemtap_session::module_filename() const
{
if (runtime_usermode_p())
return module_name + ".so";
return module_name + ".ko";
}
#if HAVE_NSS
void
systemtap_session::NSPR_init ()
{
if (! NSPR_Initialized)
{
PR_Init (PR_SYSTEM_THREAD, PR_PRIORITY_NORMAL, 1);
NSPR_Initialized = true;
}
}
#endif // HAVE_NSS
systemtap_session*
systemtap_session::clone(const string& arch, const string& release)
{
const string norm_arch = normalize_machine(arch);
if (this->architecture == norm_arch && this->kernel_release == release)
return this;
systemtap_session*& s = subsessions[make_pair(norm_arch, release)];
if (!s)
s = new systemtap_session(*this, norm_arch, release);
return s;
}
string
systemtap_session::version_string ()
{
string elfutils_version1;
#ifdef _ELFUTILS_VERSION
elfutils_version1 = "0." + lex_cast(_ELFUTILS_VERSION);
#endif
string elfutils_version2 = dwfl_version(NULL);
if (elfutils_version1 != elfutils_version2)
elfutils_version2 += string("/") + elfutils_version1;
return string (VERSION) + "/" + elfutils_version2 + ", " + STAP_EXTENDED_VERSION;
}
void
systemtap_session::version ()
{
cout << _F("Systemtap translator/driver (version %s)\n"
"Copyright (C) 2005-2015 Red Hat, Inc. and others\n"
"This is free software; see the source for copying conditions.\n",
version_string().c_str());
cout << _("enabled features:")
#ifdef HAVE_AVAHI
<< " AVAHI"
#endif
#ifdef HAVE_BOOST_SHARED_PTR_HPP
<< " BOOST_SHARED_PTR"
#endif
#ifdef HAVE_BOOST_UTILITY_STRING_REF_HPP
<< " BOOST_STRING_REF"
#endif
#ifdef HAVE_DYNINST
<< " DYNINST"
#endif
#ifdef HAVE_JAVA
<< " JAVA"
#endif
#ifdef HAVE_LIBRPM
<< " LIBRPM"
#endif
#ifdef HAVE_LIBSQLITE3
<< " LIBSQLITE3"
#endif
#ifdef HAVE_LIBVIRT
<< " LIBVIRT"
#endif
#ifdef HAVE_LIBXML2
<< " LIBXML2"
#endif
#ifdef ENABLE_NLS
<< " NLS"
#endif
#ifdef HAVE_NSS
<< " NSS"
#endif
#ifdef ENABLE_PROLOGUES
<< " PROLOGUES"
#endif
#ifdef HAVE_TR1_UNORDERED_MAP
<< " TR1_UNORDERED_MAP"
#endif
<< endl;
}
void
systemtap_session::usage (int exitcode)
{
// For error cases, just suggest --help, so we don't obscure
// the actual error message with all the help text.
if (exitcode != EXIT_SUCCESS)
{
clog << _("Try '--help' for more information.") << endl;
throw exit_exception(exitcode);
}
version ();
cout
<< endl
<< _F(
"Usage: stap [options] FILE Run script in file.\n"
" or: stap [options] - Run script on stdin.\n"
" or: stap [options] -e SCRIPT Run given script.\n"
" or: stap [options] -l PROBE List matching probes.\n"
" or: stap [options] -L PROBE List matching probes and local variables.\n"
" or: stap [options] --dump-probe-types List available probe types.\n"
" or: stap [options] --dump-probe-aliases List available probe aliases.\n"
" or: stap [options] --dump-functions List available functions.\n\n"
"Options (in %s/rc and on command line):\n"
" -- end of translator options, script options follow\n"
" -h --help show help\n"
" -V --version show version\n"
" -p NUM stop after pass NUM 1-5, instead of %d\n"
" (parse, elaborate, translate, compile, run)\n"
" -v add verbosity to all passes\n"
" --vp {N}+ add per-pass verbosity [", data_path.c_str(), last_pass);
for (unsigned i=0; i<5; i++)
cout << (perpass_verbose[i] <= 9 ? perpass_verbose[i] : 9);
cout
<< "]" << endl;
cout << _F(" -k keep temporary directory\n"
" -u unoptimized translation %s\n"
" -w suppress warnings %s\n"
" -W turn warnings into errors %s\n"
" -g guru mode %s\n"
" -P prologue-searching for function probes %s\n"
" -b bulk (percpu file) mode %s\n"
" -s NUM buffer size in megabytes, instead of %d\n"
" -I DIR look in DIR for additional .stp script files", (unoptimized ? _(" [set]") : ""),
(suppress_warnings ? _(" [set]") : ""), (panic_warnings ? _(" [set]") : ""),
(guru_mode ? _(" [set]") : ""), (prologue_searching_mode == prologue_searching_always ? _(" [set]") : ""),
(bulk_mode ? _(" [set]") : ""), buffer_size);
if (include_path.size() == 0)
cout << endl;
else
cout << _(", in addition to") << endl;
for (unsigned i=0; i<include_path.size(); i++)
cout << " " << include_path[i].c_str() << endl;
cout
<< _F(" -D NM=VAL emit macro definition into generated C code\n"
" -B NM=VAL pass option to kbuild make\n"
" --modinfo NM=VAL\n"
" include a MODULE_INFO(NM,VAL) in the generated C code\n"
" -G VAR=VAL set global variable to value\n"
//TRANSLATORS: translating 'runtime' is not advised
" -R DIR look in DIR for runtime, instead of\n"
" %s\n"
" -r DIR cross-compile to kernel with given build tree; or else\n"
" -r RELEASE cross-compile to kernel /lib/modules/RELEASE/build, instead of\n"
" %s\n"
" -a ARCH cross-compile to given architecture, instead of %s\n"
" -m MODULE set probe module name, instead of \n"
" %s\n"
" -o FILE send script output to file, instead of stdout. This supports\n"
" strftime(3) formats for FILE\n"
" -E SCRIPT run the SCRIPT in addition to the main script specified\n"
" through -e or a script file\n"
" -c CMD start the probes, run CMD, and exit when it finishes\n"
" -x PID sets target() to PID\n"
" -F run as on-file flight recorder with -o.\n"
" run as on-memory flight recorder without -o.\n"
" -S size[,n] set maximum of the size and the number of files.\n"
" -d OBJECT add unwind/symbol data for OBJECT file", runtime_path.c_str(), kernel_build_tree.c_str(), architecture.c_str(), module_name.c_str());
if (unwindsym_modules.size() == 0)
cout << endl;
else
cout << _(", in addition to") << endl;
{
vector<string> syms (unwindsym_modules.begin(), unwindsym_modules.end());
for (unsigned i=0; i<syms.size(); i++)
cout << " " << syms[i].c_str() << endl;
}
cout
<< _F(" --ldd add unwind/symbol data for all referenced object files.\n"
" --all-modules\n"
" add unwind/symbol data for all loaded kernel objects.\n"
" -t collect probe timing information\n"
#ifdef HAVE_LIBSQLITE3
" -q generate information on tapset coverage\n"
#endif /* HAVE_LIBSQLITE3 */
" --runtime=MODE\n"
" set the pass-5 runtime mode, instead of kernel\n"
#ifdef HAVE_DYNINST
" --dyninst\n"
" shorthand for --runtime=dyninst\n"
#endif /* HAVE_DYNINST */
" --prologue-searching[=WHEN]\n"
" prologue-searching for function probes\n"
" --privilege=PRIVILEGE_LEVEL\n"
" check the script for constructs not allowed at the given privilege level\n"
" --unprivileged\n"
" equivalent to --privilege=stapusr\n"
" --compatible=VERSION\n"
" suppress incompatible language/tapset changes beyond VERSION,\n"
" instead of %s\n"
" --check-version\n"
" displays warnings where a syntax element may be \n"
" version dependent\n"
" --skip-badvars\n"
" substitute zero for bad context $variables\n"
" --suppress-handler-errors\n"
" catch all runtime errors, quietly skip probe handlers\n"
" --use-server[=SERVER-SPEC]\n"
" specify systemtap compile-servers\n"
" --list-servers[=PROPERTIES]\n"
" report on the status of the specified compile-servers:\n"
" all,specified,online,trusted,signer,compatible\n"
#if HAVE_NSS
" --trust-servers[=TRUST-SPEC]\n"
" add/revoke trust of specified compile-servers:\n"
" ssl,signer,all-users,revoke,no-prompt\n"
" --use-server-on-error[=yes/no]\n"
" retry compilation using a compile server upon compilation error\n"
#endif
" --remote=HOSTNAME\n"
" run pass 5 on the specified ssh host.\n"
" may be repeated for targeting multiple hosts.\n"
" --remote-prefix\n"
" prefix each line of remote output with a host index.\n"
" --tmpdir=NAME\n"
" specify name of temporary directory to be used.\n"
" --download-debuginfo[=OPTION]\n"
" automatically download debuginfo using ABRT.\n"
" yes,no,ask,<timeout value>\n"
" --dump-probe-types\n"
" show a list of available probe types.\n"
" --sysroot=DIR\n"
" specify sysroot directory where target files (executables,\n" " libraries, etc.) are located.\n"
" --sysenv=VAR=VALUE\n"
" provide an alternate value for an environment variable\n"
" where the value on a remote system differs. Path\n"
" variables (e.g. PATH, LD_LIBRARY_PATH) are assumed to be\n"
" relative to the sysroot.\n"
" --suppress-time-limits\n"
" disable -DSTP_OVERLOAD, -DMAXACTION, and -DMAXTRYACTION limits\n"
" --save-uprobes\n"
" save uprobes.ko to current directory if it is built from source\n"
" --target-namesapce=PID\n"
" sets the target namespaces pid to PID\n"
, compatible.c_str()) << endl
;
time_t now;
time (& now);
struct tm* t = localtime (& now);
if (t && t->tm_mon*3 + t->tm_mday*173 == 0xb6)
cout << morehelp << endl;
throw exit_exception (exitcode);
}
int
systemtap_session::parse_cmdline (int argc, char * const argv [])
{
client_options_disallowed_for_unprivileged = "";
struct rlimit our_rlimit;
while (true)
{
char * num_endptr;
int grc = getopt_long (argc, argv, STAP_SHORT_OPTIONS, stap_long_options, NULL);
// NB: when adding new options, consider very carefully whether they
// should be restricted from stap clients (after --client-options)!
if (grc < 0)
break;
switch (grc)
{
case 'V':
version ();
throw exit_exception (EXIT_SUCCESS);
case 'v':
server_args.push_back (string ("-") + (char)grc);
for (unsigned i=0; i<5; i++)
perpass_verbose[i] ++;
verbose ++;
break;
case 'G':
// Make sure the global option is only composed of the
// following chars: [_=a-zA-Z0-9]
assert(optarg);
assert_regexp_match("-G parameter", optarg, "^[a-z_][a-z0-9_]*=[a-z0-9_-]+$");
globalopts.push_back (string(optarg));
break;
case 't':
server_args.push_back (string ("-") + (char)grc);
timing = true;
break;
case 'w':
server_args.push_back (string ("-") + (char)grc);
suppress_warnings = true;
break;
case 'W':
server_args.push_back (string ("-") + (char)grc);
panic_warnings = true;
break;
case 'p':
assert(optarg);
last_pass = (int)strtoul(optarg, &num_endptr, 10);
if (*num_endptr != '\0' || last_pass < 1 || last_pass > 5)
{
cerr << _("Invalid pass number (should be 1-5).") << endl;
return 1;
}
server_args.push_back (string ("-") + (char)grc + optarg);
break;
case 'I':
assert(optarg);
if (client_options)
client_options_disallowed_for_unprivileged += client_options_disallowed_for_unprivileged.empty () ? "-I" : ", -I";
if (include_arg_start == -1)
include_arg_start = include_path.size ();
include_path.push_back (string (optarg));
break;
case 'd':
assert(optarg);
server_args.push_back (string ("-") + (char)grc + optarg);
{
// Make sure an empty data object wasn't specified (-d "")
if (strlen (optarg) == 0)
{
cerr << _("Data object (-d) cannot be empty.") << endl;
return 1;
}
// At runtime user module names are resolved through their
// canonical (absolute) path, or else it's a kernel module name.
unwindsym_modules.insert (resolve_path (optarg));
// NB: we used to enable_vma_tracker() here for PR10228, but now
// we'll leave that to pragma:vma functions which actually use it.
break;
}
case 'e':
assert(optarg);
if (have_script)
{
cerr << _("Only one script can be given on the command line.")
<< endl;
return 1;
}
server_args.push_back (string ("-") + (char)grc + optarg);
cmdline_script = string (optarg);
have_script = true;
break;
case 'E':
assert(optarg);
server_args.push_back (string("-") + (char)grc + optarg);
additional_scripts.push_back(string (optarg));
// don't set have_script to true, since this script is meant to be
// given in addition to a script/script_file.
break;
case 'o':
assert(optarg);
// NB: client_options not a problem, since pass 1-4 does not use output_file.
server_args.push_back (string ("-") + (char)grc + optarg);
output_file = string (optarg);
break;
case 'R':
assert(optarg);
if (client_options) { cerr << _F("ERROR: %s invalid with %s", "-R", "--client-options") << endl; return 1; }
runtime_specified = true;
runtime_path = string (optarg);
break;
case 'm':
assert(optarg);
if (client_options)
client_options_disallowed_for_unprivileged += client_options_disallowed_for_unprivileged.empty () ? "-m" : ", -m";
module_name = string (optarg);
save_module = true;
modname_given = true;
{
// If the module name ends with '.ko', chop it off since
// modutils doesn't like modules named 'foo.ko.ko'.
if (endswith(module_name, ".ko") || endswith(module_name, ".so"))
{
module_name.erase(module_name.size() - 3);
cerr << _F("Truncating module name to '%s'", module_name.c_str()) << endl;
}
// Make sure an empty module name wasn't specified (-m "")
if (module_name.empty())
{
cerr << _("Module name cannot be empty.") << endl;
return 1;
}
// Make sure the module name is only composed of the
// following chars: [a-z0-9_]
assert_regexp_match("-m parameter", module_name, "^[a-z0-9_]+$");
// Make sure module name isn't too long.
if (module_name.size() >= (MODULE_NAME_LEN - 1))
{
module_name.resize(MODULE_NAME_LEN - 1);
cerr << _F("Truncating module name to '%s'", module_name.c_str()) << endl;
}
}
server_args.push_back (string ("-") + (char)grc + optarg);
use_script_cache = false;
break;
case 'r':
assert(optarg);
if (client_options) // NB: no paths!
assert_regexp_match("-r parameter from client", optarg, "^[a-z0-9_.-]+$");
server_args.push_back (string ("-") + (char)grc + optarg);
setup_kernel_release(optarg);
break;
case 'a':
assert(optarg);
assert_regexp_match("-a parameter", optarg, "^[a-z0-9_-]+$");
server_args.push_back (string ("-") + (char)grc + optarg);
architecture = string(optarg);
break;
case 'k':
if (client_options) { cerr << _F("ERROR: %s invalid with %s", "-k", "--client-options") << endl; return 1; }
keep_tmpdir = true;
use_script_cache = false; /* User wants to keep a usable build tree. */
break;
case 'g':
server_args.push_back (string ("-") + (char)grc);
guru_mode = true;
break;
case 'P':
server_args.push_back (string ("-") + (char)grc);
prologue_searching_mode = prologue_searching_always;
break;
case 'b':
server_args.push_back (string ("-") + (char)grc);
bulk_mode = true;
break;
case 'u':
server_args.push_back (string ("-") + (char)grc);
unoptimized = true;
break;
case 's':
assert(optarg);
buffer_size = (int) strtoul (optarg, &num_endptr, 10);
if (*num_endptr != '\0' || buffer_size < 1 || buffer_size > 4095)
{
cerr << _("Invalid buffer size (should be 1-4095).") << endl;
return 1;
}
server_args.push_back (string ("-") + (char)grc + optarg);
break;
case 'c':
assert(optarg);
cmd = string (optarg);
if (cmd == "")
{
// This would mess with later code deciding to pass -c
// through to staprun
cerr << _("Empty CMD string invalid.") << endl;
return 1;
}
server_args.push_back (string ("-") + (char)grc + optarg);
break;
case 'x':
assert(optarg);
target_pid = (int) strtoul(optarg, &num_endptr, 10);
if (*num_endptr != '\0')
{
cerr << _("Invalid target process ID number.") << endl;
return 1;
}
server_args.push_back (string ("-") + (char)grc + optarg);
break;
case 'D':
assert(optarg);
assert_regexp_match ("-D parameter", optarg, "^[a-z_][a-z_0-9]*(=-?[a-z_0-9]+)?$");
if (client_options)
client_options_disallowed_for_unprivileged += client_options_disallowed_for_unprivileged.empty () ? "-D" : ", -D";
server_args.push_back (string ("-") + (char)grc + optarg);
c_macros.push_back (string (optarg));
break;
case 'S':
assert_regexp_match ("-S parameter", optarg, "^[0-9]+(,[0-9]+)?$");
assert(optarg);
server_args.push_back (string ("-") + (char)grc + optarg);
size_option = string (optarg);
break;
case 'q':
if (client_options) { cerr << _F("ERROR: %s invalid with %s", "-q", "--client-options") << endl; return 1; }
server_args.push_back (string ("-") + (char)grc);
tapset_compile_coverage = true;
break;
case 'h':
usage (0);
break;
case 'L':
if (dump_mode)
{
cerr << _("ERROR: only one of the -l/-L/--dump-* "
"switches may be specified") << endl;
return 1;
}
assert(optarg);
server_args.push_back (string ("-") + (char)grc + optarg);
dump_mode = systemtap_session::dump_matched_probes_vars;
dump_matched_pattern = optarg;
unoptimized = true; // This causes retention of vars for listing
suppress_warnings = true;
break;
case 'l':
if (dump_mode)
{
cerr << _("ERROR: only one of the -l/-L/--dump-* "
"switches may be specified") << endl;
return 1;
}
assert(optarg);
server_args.push_back (string ("-") + (char)grc + optarg);
dump_mode = systemtap_session::dump_matched_probes;
dump_matched_pattern = optarg;
suppress_warnings = true;
break;
case 'F':
server_args.push_back (string ("-") + (char)grc);
load_only = true;
break;
case 'B':
if (client_options) { cerr << _F("ERROR: %s invalid with %s", "-B", "--client-options") << endl; return 1; }
assert(optarg);
server_args.push_back (string ("-") + (char)grc + optarg);
kbuildflags.push_back (string (optarg));
break;
case LONG_OPT_VERSION:
version ();
throw exit_exception (EXIT_SUCCESS);
case LONG_OPT_VERBOSE_PASS:
{
assert(optarg);
bool ok = true;
if (strlen(optarg) < 1 || strlen(optarg) > 5)
ok = false;
if (ok)
{
for (unsigned i=0; i<strlen(optarg); i++)
if (isdigit (optarg[i]))
perpass_verbose[i] += optarg[i]-'0';
else
ok = false;
}
if (! ok)
{
cerr << _("Invalid --vp argument: it takes 1 to 5 digits.") << endl;
return 1;
}
// NB: we don't do this: last_pass = strlen(optarg);
server_args.push_back ("--vp=" + string(optarg));
break;
}