| Commit message (Collapse) | Author | Age | Files | Lines |
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Inspired by the Python equivalents, these new utility functions just
make it a little cleaner to match at the beginning or end of a string.
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* util.h, util.cxx (assert_match_regexp): New function.
* main.cxx (main): Constrain -R, -r, -a, -D, -S, -q, -B flags.
* stap-serverd (listen): Harden stap-server-connect with ulimit/loop.
* testsuite/systemtap.server/{client,server}_args.exp: Revised.
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tapset-utrace.cxx (TOK_LIBRARY): New.
(utrace_derived_probe::utrace_derived_probe): Add library and has_library.
(utrace_builder::build): Handle library.
(utrace_derived_probe_group::emit_probe_decl): Add sdt_sem_offset to
emitted stap_utrace_probes. Add stap_task_finder_target
mmap_callback for handling shared library. Handle sdt_sem_offset in
emitted_stp_utrace_probe_cb. Add stap_utrace_mmap_found.
(register_tapset_utrace): Handle .library
tapset-utrace.cxx (TOK_LIBRARY): New.
(base_query::base_query): Add path and has_library.
(dwarf_derived_probe::dwarf_derived_probe) Likewise.
(dwarf_derived_probe::register_patterns): Handle .library
(sdt_query::convert_location): Likewise.
(dwarf_builder::build): Likewise.
(uprobe_derived_probe_group::emit_module_decls): Emit
sdt_sem_address. Add sdt_sem_offset to emitted stap_uprobe_spec.
Add offset and vm_flags to signature of stap_uprobe_change_plus, and
handle sdt_sem_offset. Allow writeable segments in emitted
stap_uprobe_mmap_found.
sdt_misc.exp: Test .library
util.cxx (find_executable): Add env_path to sig and use it in getenv.
util.h (find_executable): Likewise. Make "PATH" the default.
dtrace.in (provider): Turn on semaphores.
sdt.h: Likewise.
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group owner of the uprobes buld directory to build uprobes.ko.
- When building uprobes.ko, make all generated files writable by the group
owner of the uprobes build directory.
- Don't change the group owner of the uprobes build directory during
'make install'
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Ensure uprobes install directory has group 'stap-server'.
Rename igid_in to in_group.
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Every single copy_file call we had was converting strings to char*,
printing the same error message, and optionally printing the same
verbose string. Let's canonicalize that.
* util.cxx (copy_file): Take string filenames, add a verbose flag, and
consolidate the message printing.
* cache.cxx (add_to_cache): Pass strings and remove message printing.
(get_from_cache): Ditto.
* main.cxx (main): Ditto.
* tapsets.cxx (tracepoint_builder::get_tracequery_module): Ditto.
(dwarf_cast_expanding_visitor::filter_special_modules): Ditto.
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* util.h (delete_map): New templated map deleter.
* dwflpp.cxx (dwflpp::~dwflpp): Use it.
* tapsets.cxx (symbol_table::~symbol_table): Use it.
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We always use lex_cast either to string or from string, so I made that
explicit, and got rid of some string copies in the process. There was
also stringify(), which was redundant to lex_cast<string>.
We also always used lex_cast_hex to string, so that's now hard-coded and
again eliminated a string copy.
For lex_cast_qstring<string>, there's no need to write the streamify the
input, so a specialization now operates directly on the input.
Hopefully this is a bit cleaner, and I do measure it to be a little
faster on scripts with many probes.
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* util.cxx (stap_system): Take extra verbosity value. Standardize
error handling / tracing.
* util.h: Corresponding changes.
* buildrun.cxx, main.cxx, modsign.cxx: Update callers.
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* util.h (lex_cast_qstring): Use unsigned rather than signed chars.
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Don't generate an error message for unsigned modules.
Make sure module signature exists before attempting to copy to the cache.
Allow timer p[robes for unprivileged users.
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Conflicts:
configure
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We hereby no longer try to manipulate process groups in any way. We
don't set a private process group, and we never kill() our entire group
either. Instead of using system(), we now have a stap_system() which
saves the child PID, so when we get a terminating signal we can pass it
along to the child.
Signals sent through the TTY have always worked, since the TTY sends it
to the entire pgrp. However, if we're running as part of a wrapper
script or GUI, which may not have a separate process group for stap, we
still would like to allow "kill -TERM $STAPPID" to terminate stap
nicely.
There's still a short window of failure in the time that staprun is
active, because we can't kill a setuid process from a user process.
Once staprun drops privileges and execs to stapio though, everything
should work fine.
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To better support kernel developers who work out of a single source
tree, this adds the git HEAD revision to our caching hash.
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* util.cxx (remove_file_or_dir): New function.
* util.h (remove_file_or_dir): New function.
* systemtap.spec (stap): Add stap-env, stap-gen-cert, stap-authorize-cert,
and stap-authorize-signing-cert.
(stap-client): Remove stap-find-or-start-server, stap-add-server-cert.
Add stap-authorize-server-cert.
(stap-server): Add stap-find-servers, stap-find-or-start-server,
stap-authorize-server-cert. Remove stap-gen-server-cert.
* stap-find-servers: Source stap-env. Use $stap_avahi_service_tag.
(initialization): Set timeout to 10.
(find_servers): Run avahi-browse in the background and wait for it.
Use a temp file for the output of avahi-browse. Kill avahi-browse if
the timeout expires.
(match_server): Set read timeout.
(fatal): New function.
* stap-find-or-start-server: Source stap-env. Use $stap_exec_prefix. Always
exit with 0.
* stap-start-server: Source stap-env. Check for the server PID as a running
process and for avahi-publish-service running as a child in order to
verify that the server is ready.
* stap-add-server-cert: Renamed to stap-authorize-server-cert. Source
stap-env. Call stap-authorize-cert.
* stap-client: Source stap-env. Use $stap_user_ssl_db and
$stap_root_ssl_db. Use $stap_tmpdir_prefix_client,
$stap_tmpdir_prefix_server. Use $stap_exec_prefix.
(configuration): Removed.
(staprun_running): Removed.
(interrupt): Don't kill staprun.
* stap-server: Source stap-env. Use $stap_user_ssl_db and
$stap_root_ssl_db. Use $stap_tmpdir_prefix_client,
$stap_tmpdir_prefix_server. Use $stap_exec_prefix.
(configuration): Removed.
* session.h (systemtap_session): Add cert_db_path.
* runtime/staprun/staprun_funcs.c (config.h): #include it.
(modverify.h): #include it.
(check_signature): New function.
(check_groups): New function extracted from check_permissions.
(check_permissions): Call check_groups and check_signature.
* runtime/staprun/mainloop.c (cleanup_and_exit): Pass modpath to staprun,
not modname.
* main.cxx (main): Initialize cert_db_path. Handle LONG_OPT_SIGN_MODULE.
Save the module signature if the module was signed and is being saved.
(LONG_OPT_SIGN_MODULE): #define it.
(long_options): Add --sign-module.
* cache.cxx (config.h): #include it.
(add_to_cache): Add the module signature file to the cache if the module
has been signed.
* buildrun.cxx (modsign.h): #include it.
(compile_pass): Call sign_module, if requested.
* configure.ac: Define HAVE_NSS if NSS libraries are available.
* Makefile.am (AM_CPPFLAGS): Add -DSYSCONFDIR.
(bin_SCRIPTS): Add stap-env, stap-gen-cert, stap-authorize-cert,
stap-authorize-signing-cert, stap-authorize-server-cert. Remove
stap-gen-server-cert, stap-add-server-cert.
(stap_SOURCES): Add nsscommon.c, modsign.cxx
(stap_CPPFLAGS): Add $(nss_CFLAGS), $(nspr_CFLAGS).
(stap_LDADD): Add -lnss3.
(staprun_SOURCES): Add nsscommon.c.
* modsign.cxx: New file.
* modsign.h: New file.
* nsscommon.c: New file.
* nsscommon.h: New file.
* runtime/staprun/modverify.c: New file.
* runtime/staprun/modverify.h: New file.
* stap-authorize-cert: New file.
* stap-authorize-signing-cert: New file.
* stap-env: New file.
* Makefile.in: Regenerated.
* aclocal.m4: Regenerated.
* config.in: Regenerated.
* configure: Regenerated.
* doc/Makefile.in: Regenerated.
* doc/SystemTap_Tapset_Reference/Makefile.in: Regenerated.
* testsuite/Makefile.in: Regenerated.
* testsuite/aclocal.m4: Regenerated.
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* commit 'origin/master':
PR5686: correct regression in semok/optimize.stp
trailing whitespace removal, as approved by emacs
fix global-var array index rendering
fix NEWS to refer to simpler context.stp tapset functions in auto-printing blurb
Document written but unread global variable automatic display.
2nd try
initial
Make _get_sock_addr return correct address in kernel before 2.6.16.
Automatically print written but unread globals
Make nodwf test passed when CONFIG_QUOTACTL unset
Uses STAPCONF_DPATH_PATH instead of a kernel version check.
Simplified "rpm" target a bit.
Moved tar archive creation step from "rpm" target to "dist-gzip" target.
remove support for "make dist" since git-archive does as well;
Examples html files moved into subdir.
2008-08-25 David Smith <dsmith@redhat.com>
ChangeLog Entries
Robustness improvements for the stap client/server
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(add-hook 'before-save-hook 'delete-trailing-whitespace)
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PR2424
From Lai Jiangshan <laijs@cn.fujitsu.com>
* util.cxx (cmdstr_quoted): New. Properly quote
command string.
* buildrun.cxx (run_pass): Call cmdstr_quoted().
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PR 4846
* parse.cxx (input_put): New function, sort of like stdio ungetc.
(input_get): Skip cursor position changing for input_put strings.
(scan): Rework $.../@... substitution into character pasting.
* parse.h: Corresponding changes.
* util.h (lex_cast_qstring): Octal-quote unprintable characters.
* stap.1.in, NEWS: Document new behaviour.
2007-08-07 Frank Ch. Eigler <fche@redhat.com>
PR 4846
* parseko/preprocess13.stp, parseok/nineteen.stp,
semok/twentyfive.stp: New tests.
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PR 3522.
* tapsets.cxx (dwflpp::emit_address): Call
_stp_module_relocate only once per session.
Error message cleanup: duplicate elimination etc.
* session.h (saved_errors): Store a set of 'em.
(num_errors): Return set size. Remove old numeric field.
Update all callers.
* elaborate.cxx (systemtap_session::print_errors):
Print each encountered message just once.
* staptree (semantic_error): Make msg2 writeable.
Add a chain field.
* tapsets.cxx (*var_expanding*:visit_target_symbol): Set saved
semantic_error's chain field.
* elaborate.cxx (register_library_aliases, visit_foreach_loop,
visit_functioncall, derive_probes): Plop "while: ..." error
message prefix/suffix right into the semantic_error message string.
* parse.cxx (lexer::scan): Identify erroneous token better
in error message for unresolvable $N/@M command line args.
* util.h (lex_cast_hex): Use std::hex, not std::ios::hex.
2006-12-19 Frank Ch. Eigler <fche@redhat.com>
PR 3522.
* buildok/twentyfive.stp: New test for static $var access.
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* util.h (lex_cast_qstring): Move def'n here. Also quote \.
(stringify, lex_cast, lex_cast_hex): Move defn here.
* buildrun.cxx, elaborate.cxx, main.cxx, staptree.cxx: Adapt.
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* main.cxx (printscript): New function containing code moved from
main().
(main): Added code to create cache directory, call function to
generate hash, and see if we can use cached source/module. If
pass 4 is actually run to produce a new module, we call
add_to_cache() to cache the result.
* session.h (struct systemtap_session): Added hash/cache session
data.
* cache.cxx: New file handling adding/getting files from the
cache.
* cache.h: New header file for cache.cxx.
* hash.cxx: New file containing C++ wrapper for routines in
mdfour.c and the find_hash function which computes the hash file
name for an input script.
* hash.h: New header file for hash.cxx.
* mdfour.c: New file containing MD4 hash code.
* mdfour.h: New header file for mdfour.c.
* util.cxx: New file containing several utility functions used by
the caching code.
* util.h: New header file for util.cxx.
* Makefile.am: Added new C/C++ files.
* Makefile.in: Regenerated.
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