m_options.c revision 46207652a0c99a2c8b0f05eafce3ca3ec533c121
132824028b51461062a5a282bfd775d4bd4ad6a47sewardj 232824028b51461062a5a282bfd775d4bd4ad6a47sewardj/*--------------------------------------------------------------------*/ 3b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn/*--- Command line options. m_options.c ---*/ 432824028b51461062a5a282bfd775d4bd4ad6a47sewardj/*--------------------------------------------------------------------*/ 532824028b51461062a5a282bfd775d4bd4ad6a47sewardj 632824028b51461062a5a282bfd775d4bd4ad6a47sewardj/* 732824028b51461062a5a282bfd775d4bd4ad6a47sewardj This file is part of Valgrind, a dynamic binary instrumentation 832824028b51461062a5a282bfd775d4bd4ad6a47sewardj framework. 932824028b51461062a5a282bfd775d4bd4ad6a47sewardj 1003f8d3fc25f5a45c5826259d1b33b7f310117279sewardj Copyright (C) 2000-2012 Nicholas Nethercote 1132824028b51461062a5a282bfd775d4bd4ad6a47sewardj njn@valgrind.org 1232824028b51461062a5a282bfd775d4bd4ad6a47sewardj 1332824028b51461062a5a282bfd775d4bd4ad6a47sewardj This program is free software; you can redistribute it and/or 1432824028b51461062a5a282bfd775d4bd4ad6a47sewardj modify it under the terms of the GNU General Public License as 1532824028b51461062a5a282bfd775d4bd4ad6a47sewardj published by the Free Software Foundation; either version 2 of the 1632824028b51461062a5a282bfd775d4bd4ad6a47sewardj License, or (at your option) any later version. 1732824028b51461062a5a282bfd775d4bd4ad6a47sewardj 1832824028b51461062a5a282bfd775d4bd4ad6a47sewardj This program is distributed in the hope that it will be useful, but 1932824028b51461062a5a282bfd775d4bd4ad6a47sewardj WITHOUT ANY WARRANTY; without even the implied warranty of 2032824028b51461062a5a282bfd775d4bd4ad6a47sewardj MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 2132824028b51461062a5a282bfd775d4bd4ad6a47sewardj General Public License for more details. 2232824028b51461062a5a282bfd775d4bd4ad6a47sewardj 2332824028b51461062a5a282bfd775d4bd4ad6a47sewardj You should have received a copy of the GNU General Public License 2432824028b51461062a5a282bfd775d4bd4ad6a47sewardj along with this program; if not, write to the Free Software 2532824028b51461062a5a282bfd775d4bd4ad6a47sewardj Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 2632824028b51461062a5a282bfd775d4bd4ad6a47sewardj 02111-1307, USA. 2732824028b51461062a5a282bfd775d4bd4ad6a47sewardj 2832824028b51461062a5a282bfd775d4bd4ad6a47sewardj The GNU General Public License is contained in the file COPYING. 2932824028b51461062a5a282bfd775d4bd4ad6a47sewardj*/ 3032824028b51461062a5a282bfd775d4bd4ad6a47sewardj 31c7561b931e249acf3768ead77638545b0ccaa8f1njn#include "pub_core_basics.h" 32374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn#include "pub_core_vki.h" 33a3506d39c8c94f09837558d33c54b110e1ac0ea1njn#include "pub_core_options.h" 346893d65852940741dbebbc6ba1480e89cf34e30fsewardj#include "pub_core_libcassert.h" 35374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn#include "pub_core_libcbase.h" 36374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn#include "pub_core_libcfile.h" 376893d65852940741dbebbc6ba1480e89cf34e30fsewardj#include "pub_core_libcprint.h" 38374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn#include "pub_core_libcproc.h" 39374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn#include "pub_core_mallocfree.h" 40064212709dc8988a48d2cbde5b90528952d8cd74sewardj#include "pub_core_seqmatch.h" // VG_(string_match) 4132824028b51461062a5a282bfd775d4bd4ad6a47sewardj 42a3506d39c8c94f09837558d33c54b110e1ac0ea1njn// See pub_{core,tool}_options.h for explanations of all these. 43a3506d39c8c94f09837558d33c54b110e1ac0ea1njn 44a3506d39c8c94f09837558d33c54b110e1ac0ea1njn 45a3506d39c8c94f09837558d33c54b110e1ac0ea1njn/* Define, and set defaults. */ 46a3506d39c8c94f09837558d33c54b110e1ac0ea1njnVexControl VG_(clo_vex_control); 47a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_error_limit) = True; 48b9779088c43db2a576ae43bde0694411c036b1c4sewardjInt VG_(clo_error_exitcode) = 0; 490ba37c90c4674515da387b30a6e5f23fa75a173csewardj 505d5dd8e6b7ff782fc89f5b96cecf04839742882bphilippe#if defined(VGPV_arm_linux_android) || defined(VGPV_x86_linux_android) 51deddfdfbd13203804737b95b6bf5861f758ac865sewardjVgVgdb VG_(clo_vgdb) = Vg_VgdbNo; // currently disabled on Android 52deddfdfbd13203804737b95b6bf5861f758ac865sewardj#else 530ba37c90c4674515da387b30a6e5f23fa75a173csewardjVgVgdb VG_(clo_vgdb) = Vg_VgdbYes; 54deddfdfbd13203804737b95b6bf5861f758ac865sewardj#endif 553b290486cd4cd601b20e04340e593c9ed9717e5fsewardjInt VG_(clo_vgdb_poll) = 5000; 563b290486cd4cd601b20e04340e593c9ed9717e5fsewardjInt VG_(clo_vgdb_error) = 999999999; 5719f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_vgdb_prefix) = NULL; 583b290486cd4cd601b20e04340e593c9ed9717e5fsewardjBool VG_(clo_vgdb_shadow_registers) = False; 590ba37c90c4674515da387b30a6e5f23fa75a173csewardj 60a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_db_attach) = False; 6119f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_db_command) = GDB_PATH " -nw %f %p"; 62a3506d39c8c94f09837558d33c54b110e1ac0ea1njnInt VG_(clo_gen_suppressions) = 0; 63a3506d39c8c94f09837558d33c54b110e1ac0ea1njnInt VG_(clo_sanity_level) = 1; 64a3506d39c8c94f09837558d33c54b110e1ac0ea1njnInt VG_(clo_verbosity) = 1; 652d9e874b7a628ada216f09cc4f065798c65fffa4sewardjBool VG_(clo_stats) = False; 6671bc3cbb1b6da72fe1d3a9fea90e53847c5b0a6fsewardjBool VG_(clo_xml) = False; 6719f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_xml_user_comment) = NULL; 68a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_demangle) = True; 6919f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_soname_synonyms) = NULL; 70a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_trace_children) = False; 7119f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_trace_children_skip) = NULL; 7219f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_trace_children_skip_by_arg) = NULL; 736e31f80899f1c79a54f164955069f3f74fe8b7e2sewardjBool VG_(clo_child_silent_after_fork) = False; 7419f91bbaedb4caef8a60ce94b0f507193cc0bc10florianHChar* VG_(clo_log_fname_expanded) = NULL; 7519f91bbaedb4caef8a60ce94b0f507193cc0bc10florianHChar* VG_(clo_xml_fname_expanded) = NULL; 76a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_time_stamp) = False; 77a3506d39c8c94f09837558d33c54b110e1ac0ea1njnInt VG_(clo_input_fd) = 0; /* stdin */ 78a3506d39c8c94f09837558d33c54b110e1ac0ea1njnInt VG_(clo_n_suppressions) = 0; 7919f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_suppressions)[VG_CLO_MAX_SFILES]; 8014cdbf8f4ac7e49de2bced6546f7867b2e0655f0sewardjInt VG_(clo_n_fullpath_after) = 0; 8119f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_fullpath_after)[VG_CLO_MAX_FULLPATH_AFTER]; 8271826f77dbaefb6a9c694d9711aa649ed0980cc7sewardjconst HChar* VG_(clo_extra_debuginfo_path) = NULL; 83a3506d39c8c94f09837558d33c54b110e1ac0ea1njnUChar VG_(clo_trace_flags) = 0; // 00000000b 8417c5e2e3a2f48970063ea43a9abee3e11c72cb04sewardjBool VG_(clo_profyle_sbs) = False; 8517c5e2e3a2f48970063ea43a9abee3e11c72cb04sewardjUChar VG_(clo_profyle_flags) = 0; // 00000000b 8617c5e2e3a2f48970063ea43a9abee3e11c72cb04sewardjULong VG_(clo_profyle_interval) = 0; 8729e022d85378cd303e00c1ec7a8dd60aaed9145aflorianInt VG_(clo_trace_notbelow) = -1; // unspecified 8829e022d85378cd303e00c1ec7a8dd60aaed9145aflorianInt VG_(clo_trace_notabove) = -1; // unspecified 89a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_trace_syscalls) = False; 90a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_trace_signals) = False; 91a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_trace_symtab) = False; 9219f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_trace_symtab_patt) = "*"; 93a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_trace_cfi) = False; 94f767d967b9ef331dcd7d0cd4584f6570cd829333sewardjBool VG_(clo_debug_dump_syms) = False; 95f767d967b9ef331dcd7d0cd4584f6570cd829333sewardjBool VG_(clo_debug_dump_line) = False; 96f767d967b9ef331dcd7d0cd4584f6570cd829333sewardjBool VG_(clo_debug_dump_frames) = False; 97a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_trace_redir) = False; 9878bfc711d3e684c76eeab5f89a94a78d40ed6f4bbartenum FairSchedType 9978bfc711d3e684c76eeab5f89a94a78d40ed6f4bbart VG_(clo_fair_sched) = disable_fair_sched; 100a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_trace_sched) = False; 1019c606bd8634cd6b67bb41fa645b5c639668cfa2dsewardjBool VG_(clo_profile_heap) = False; 102d99c26a4bc18fd3b17c4626c9c1fbd1583388660philippeInt VG_(clo_core_redzone_size) = CORE_REDZONE_DEFAULT_SZB; 103d99c26a4bc18fd3b17c4626c9c1fbd1583388660philippe// A value != -1 overrides the tool-specific value 104d99c26a4bc18fd3b17c4626c9c1fbd1583388660philippe// VG_(needs_malloc_replacement).tool_client_redzone_szB 105d99c26a4bc18fd3b17c4626c9c1fbd1583388660philippeInt VG_(clo_redzone_size) = -1; 106a3506d39c8c94f09837558d33c54b110e1ac0ea1njnInt VG_(clo_dump_error) = 0; 107a3506d39c8c94f09837558d33c54b110e1ac0ea1njnInt VG_(clo_backtrace_size) = 12; 10846207652a0c99a2c8b0f05eafce3ca3ec533c121philippeInt VG_(clo_merge_recursive_frames) = 0; // default value: no merge 10919f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_sim_hints) = NULL; 11041ded2cf9711091a1bc7a6c1dd2d177e978b05e9sewardjBool VG_(clo_sym_offsets) = False; 111b8b79addf04dd5d0b558916e26df0b1927cbd758sewardjBool VG_(clo_read_var_info) = False; 112f9ebc3956087ce01561c4ab3faf5a8983b0f7c1csewardjInt VG_(clo_n_req_tsyms) = 0; 11319f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_req_tsyms)[VG_CLO_MAX_REQ_TSYMS]; 114f9ebc3956087ce01561c4ab3faf5a8983b0f7c1csewardjHChar* VG_(clo_require_text_symbol) = NULL; 115a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_run_libc_freeres) = True; 116a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_track_fds) = False; 117a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_show_below_main)= False; 118a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_show_emwarns) = False; 11991b470c367836f65177413ca2a19b25f32fb8ef0sewardjWord VG_(clo_max_stackframe) = 2000000; 12095d86c091a218e904e912354efa4f952a9712e82sewardjWord VG_(clo_main_stacksize) = 0; /* use client's rlimit.stack */ 121a3506d39c8c94f09837558d33c54b110e1ac0ea1njnBool VG_(clo_wait_for_gdb) = False; 1226c3a219727dead14309abf431f72ca1f99b8ca37sewardjVgSmc VG_(clo_smc_check) = Vg_SmcStack; 12319f91bbaedb4caef8a60ce94b0f507193cc0bc10florianconst HChar* VG_(clo_kernel_variant) = NULL; 12497db761d2a94fc7a349aee9359ef85828d9618b6njnBool VG_(clo_dsymutil) = False; 125c30cd9bdc3c13c79a2e0281302b115c3d220bc9dsewardjBool VG_(clo_sigill_diag) = True; 12632824028b51461062a5a282bfd775d4bd4ad6a47sewardj 1276893d65852940741dbebbc6ba1480e89cf34e30fsewardj/*====================================================================*/ 128b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn/*=== File expansion ===*/ 1296893d65852940741dbebbc6ba1480e89cf34e30fsewardj/*====================================================================*/ 1306893d65852940741dbebbc6ba1480e89cf34e30fsewardj 131374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn// Copies the string, prepending it with the startup working directory, and 132374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn// expanding %p and %q entries. Returns a new, malloc'd string. 13319f91bbaedb4caef8a60ce94b0f507193cc0bc10florianHChar* VG_(expand_file_name)(const HChar* option_name, const HChar* format) 134374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn{ 13519f91bbaedb4caef8a60ce94b0f507193cc0bc10florian static HChar base_dir[VKI_PATH_MAX]; 136374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn Int len, i = 0, j = 0; 13719f91bbaedb4caef8a60ce94b0f507193cc0bc10florian HChar* out; 138374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 139374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn Bool ok = VG_(get_startup_wd)(base_dir, VKI_PATH_MAX); 140374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn tl_assert(ok); 141374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 142374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn if (VG_STREQ(format, "")) { 143374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn // Empty name, bad. 144b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn VG_(fmsg)("%s: filename is empty", option_name); 1455542d8f5047c4f59ed60e72c2d0f1b1d4d149ea8njn goto bad; 1465542d8f5047c4f59ed60e72c2d0f1b1d4d149ea8njn } 1475542d8f5047c4f59ed60e72c2d0f1b1d4d149ea8njn 1485542d8f5047c4f59ed60e72c2d0f1b1d4d149ea8njn // If 'format' starts with a '~', abort -- the user probably expected the 1495542d8f5047c4f59ed60e72c2d0f1b1d4d149ea8njn // shell to expand but it didn't (see bug 195268 for details). This means 1505542d8f5047c4f59ed60e72c2d0f1b1d4d149ea8njn // that we don't allow a legitimate filename beginning with '~' but that 1515542d8f5047c4f59ed60e72c2d0f1b1d4d149ea8njn // seems very unlikely. 1525542d8f5047c4f59ed60e72c2d0f1b1d4d149ea8njn if (format[0] == '~') { 153b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn VG_(fmsg)( 154b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn "%s: filename begins with '~'\n" 155b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn "You probably expected the shell to expand the '~', but it\n" 156b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn "didn't. The rules for '~'-expansion vary from shell to shell.\n" 157b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn "You might have more luck using $HOME instead.\n", 158b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn option_name 159b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn ); 160374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn goto bad; 161374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 162374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 1632dd08f575042c604cebf32f2c2002a0fba0ed800njn // If 'format' starts with a '/', do not prefix with startup dir. 1642dd08f575042c604cebf32f2c2002a0fba0ed800njn if (format[0] != '/') { 1652dd08f575042c604cebf32f2c2002a0fba0ed800njn j += VG_(strlen)(base_dir); 1662dd08f575042c604cebf32f2c2002a0fba0ed800njn } 1672dd08f575042c604cebf32f2c2002a0fba0ed800njn 168374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn // The 10 is slop, it should be enough in most cases. 169374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn len = j + VG_(strlen)(format) + 10; 1709c606bd8634cd6b67bb41fa645b5c639668cfa2dsewardj out = VG_(malloc)( "options.efn.1", len ); 1712dd08f575042c604cebf32f2c2002a0fba0ed800njn if (format[0] != '/') { 1722dd08f575042c604cebf32f2c2002a0fba0ed800njn VG_(strcpy)(out, base_dir); 1732dd08f575042c604cebf32f2c2002a0fba0ed800njn out[j++] = '/'; 1742dd08f575042c604cebf32f2c2002a0fba0ed800njn } 175374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 176374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn#define ENSURE_THIS_MUCH_SPACE(x) \ 177374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn if (j + x >= len) { \ 178374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn len += (10 + x); \ 1799c606bd8634cd6b67bb41fa645b5c639668cfa2dsewardj out = VG_(realloc)("options.efn.2(multiple)", out, len); \ 180374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 181374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 182374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn while (format[i]) { 183374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn if (format[i] != '%') { 184374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn ENSURE_THIS_MUCH_SPACE(1); 185374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn out[j++] = format[i++]; 186374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 187374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } else { 188374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn // We saw a '%'. What's next... 189374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn i++; 190374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn if ('%' == format[i]) { 191374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn // Replace '%%' with '%'. 192374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn ENSURE_THIS_MUCH_SPACE(1); 193374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn out[j++] = format[i++]; 194374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 195374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn else if ('p' == format[i]) { 196374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn // Print the PID. Assume that it's not longer than 10 chars -- 197374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn // reasonable since 'pid' is an Int (ie. 32 bits). 198374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn Int pid = VG_(getpid)(); 199374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn ENSURE_THIS_MUCH_SPACE(10); 200374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn j += VG_(sprintf)(&out[j], "%d", pid); 201374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn i++; 202374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 2032dd08f575042c604cebf32f2c2002a0fba0ed800njn else if ('q' == format[i]) { 2042dd08f575042c604cebf32f2c2002a0fba0ed800njn i++; 2052dd08f575042c604cebf32f2c2002a0fba0ed800njn if ('{' == format[i]) { 2062dd08f575042c604cebf32f2c2002a0fba0ed800njn // Get the env var name, print its contents. 20719f91bbaedb4caef8a60ce94b0f507193cc0bc10florian const HChar* qualname; 20819f91bbaedb4caef8a60ce94b0f507193cc0bc10florian HChar* qual; 2092dd08f575042c604cebf32f2c2002a0fba0ed800njn i++; 2102dd08f575042c604cebf32f2c2002a0fba0ed800njn qualname = &format[i]; 2112dd08f575042c604cebf32f2c2002a0fba0ed800njn while (True) { 2122dd08f575042c604cebf32f2c2002a0fba0ed800njn if (0 == format[i]) { 213b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn VG_(fmsg)("%s: malformed %%q specifier\n", option_name); 214374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn goto bad; 2152dd08f575042c604cebf32f2c2002a0fba0ed800njn } else if ('}' == format[i]) { 2162dd08f575042c604cebf32f2c2002a0fba0ed800njn // Temporarily replace the '}' with NUL to extract var 2172dd08f575042c604cebf32f2c2002a0fba0ed800njn // name. 218cfea784f4432d0ec79e9360ad324b820faada649florian // FIXME: this is not safe as FORMAT is sometimes a 219cfea784f4432d0ec79e9360ad324b820faada649florian // string literal which may reside in read-only memory 22019f91bbaedb4caef8a60ce94b0f507193cc0bc10florian ((HChar *)format)[i] = 0; 2212dd08f575042c604cebf32f2c2002a0fba0ed800njn qual = VG_(getenv)(qualname); 2222dd08f575042c604cebf32f2c2002a0fba0ed800njn if (NULL == qual) { 223b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn VG_(fmsg)("%s: environment variable %s is not set\n", 224b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn option_name, qualname); 22519f91bbaedb4caef8a60ce94b0f507193cc0bc10florian // FIXME: this is not safe as FORMAT is sometimes a 22619f91bbaedb4caef8a60ce94b0f507193cc0bc10florian // string literal which may reside in read-only memory 22719f91bbaedb4caef8a60ce94b0f507193cc0bc10florian ((HChar *)format)[i] = '}'; // Put the '}' back. 2282dd08f575042c604cebf32f2c2002a0fba0ed800njn goto bad; 2292dd08f575042c604cebf32f2c2002a0fba0ed800njn } 23019f91bbaedb4caef8a60ce94b0f507193cc0bc10florian // FIXME: this is not safe as FORMAT is sometimes a 23119f91bbaedb4caef8a60ce94b0f507193cc0bc10florian // string literal which may reside in read-only memory 23219f91bbaedb4caef8a60ce94b0f507193cc0bc10florian ((HChar *)format)[i] = '}'; // Put the '}' back. 2332dd08f575042c604cebf32f2c2002a0fba0ed800njn i++; 2342dd08f575042c604cebf32f2c2002a0fba0ed800njn break; 235374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 236374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn i++; 237374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 2382dd08f575042c604cebf32f2c2002a0fba0ed800njn ENSURE_THIS_MUCH_SPACE(VG_(strlen)(qual)); 2392dd08f575042c604cebf32f2c2002a0fba0ed800njn j += VG_(sprintf)(&out[j], "%s", qual); 2402dd08f575042c604cebf32f2c2002a0fba0ed800njn } else { 241b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn VG_(fmsg)("%s: expected '{' after '%%q'\n", option_name); 2422dd08f575042c604cebf32f2c2002a0fba0ed800njn goto bad; 243374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 244374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 245374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn else { 246374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn // Something else, abort. 247b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn VG_(fmsg)("%s: expected 'p' or 'q' or '%%' after '%%'\n", 248b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn option_name); 249374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn goto bad; 250374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 251374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 252374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 253374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn ENSURE_THIS_MUCH_SPACE(1); 254374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn out[j++] = 0; 255374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 256374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn return out; 257374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 258374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn bad: { 25919f91bbaedb4caef8a60ce94b0f507193cc0bc10florian HChar* opt = // 2: 1 for the '=', 1 for the NUL. 2609c606bd8634cd6b67bb41fa645b5c639668cfa2dsewardj VG_(malloc)( "options.efn.3", 2619c606bd8634cd6b67bb41fa645b5c639668cfa2dsewardj VG_(strlen)(option_name) + VG_(strlen)(format) + 2 ); 262374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn VG_(strcpy)(opt, option_name); 263374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn VG_(strcat)(opt, "="); 264374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn VG_(strcat)(opt, format); 265b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn VG_(fmsg_bad_option)(opt, ""); 266374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn } 267374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn} 268374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 269064212709dc8988a48d2cbde5b90528952d8cd74sewardj/*====================================================================*/ 270064212709dc8988a48d2cbde5b90528952d8cd74sewardj/*=== --trace-children= support ===*/ 271064212709dc8988a48d2cbde5b90528952d8cd74sewardj/*====================================================================*/ 272064212709dc8988a48d2cbde5b90528952d8cd74sewardj 273064212709dc8988a48d2cbde5b90528952d8cd74sewardjstatic HChar const* consume_commas ( HChar const* c ) { 274064212709dc8988a48d2cbde5b90528952d8cd74sewardj while (*c && *c == ',') { 275064212709dc8988a48d2cbde5b90528952d8cd74sewardj ++c; 276064212709dc8988a48d2cbde5b90528952d8cd74sewardj } 277064212709dc8988a48d2cbde5b90528952d8cd74sewardj return c; 278064212709dc8988a48d2cbde5b90528952d8cd74sewardj} 279064212709dc8988a48d2cbde5b90528952d8cd74sewardj 280064212709dc8988a48d2cbde5b90528952d8cd74sewardjstatic HChar const* consume_field ( HChar const* c ) { 281064212709dc8988a48d2cbde5b90528952d8cd74sewardj while (*c && *c != ',') { 282064212709dc8988a48d2cbde5b90528952d8cd74sewardj ++c; 283064212709dc8988a48d2cbde5b90528952d8cd74sewardj } 284064212709dc8988a48d2cbde5b90528952d8cd74sewardj return c; 285064212709dc8988a48d2cbde5b90528952d8cd74sewardj} 286064212709dc8988a48d2cbde5b90528952d8cd74sewardj 287064212709dc8988a48d2cbde5b90528952d8cd74sewardj/* Should we trace into this child executable (across execve etc) ? 2889ab64a4d3043c251561419d0e0f51492172b1072sewardj This involves considering --trace-children=, 2899ab64a4d3043c251561419d0e0f51492172b1072sewardj --trace-children-skip=, --trace-children-skip-by-arg=, and the name 2909ab64a4d3043c251561419d0e0f51492172b1072sewardj of the executable. 'child_argv' must not include the name of the 2919ab64a4d3043c251561419d0e0f51492172b1072sewardj executable itself; iow child_argv[0] must be the first arg, if any, 2929ab64a4d3043c251561419d0e0f51492172b1072sewardj for the child. */ 2939ab64a4d3043c251561419d0e0f51492172b1072sewardjBool VG_(should_we_trace_this_child) ( HChar* child_exe_name, 2949ab64a4d3043c251561419d0e0f51492172b1072sewardj HChar** child_argv ) 295064212709dc8988a48d2cbde5b90528952d8cd74sewardj{ 296064212709dc8988a48d2cbde5b90528952d8cd74sewardj // child_exe_name is pulled out of the guest's space. We 297064212709dc8988a48d2cbde5b90528952d8cd74sewardj // should be at least marginally cautious with it, lest it 298064212709dc8988a48d2cbde5b90528952d8cd74sewardj // explode or burst into flames unexpectedly. 299064212709dc8988a48d2cbde5b90528952d8cd74sewardj if (child_exe_name == NULL || VG_(strlen)(child_exe_name) == 0) 300064212709dc8988a48d2cbde5b90528952d8cd74sewardj return VG_(clo_trace_children); // we know narfink 301064212709dc8988a48d2cbde5b90528952d8cd74sewardj 302064212709dc8988a48d2cbde5b90528952d8cd74sewardj // If --trace-children=no, the answer is simply NO. 303064212709dc8988a48d2cbde5b90528952d8cd74sewardj if (! VG_(clo_trace_children)) 304064212709dc8988a48d2cbde5b90528952d8cd74sewardj return False; 305064212709dc8988a48d2cbde5b90528952d8cd74sewardj 3069ab64a4d3043c251561419d0e0f51492172b1072sewardj // Otherwise, look for other reasons to say NO. First, 3079ab64a4d3043c251561419d0e0f51492172b1072sewardj // see if the exe name matches any of the patterns specified 3089ab64a4d3043c251561419d0e0f51492172b1072sewardj // by --trace-children-skip=. 309064212709dc8988a48d2cbde5b90528952d8cd74sewardj if (VG_(clo_trace_children_skip)) { 310064212709dc8988a48d2cbde5b90528952d8cd74sewardj HChar const* last = VG_(clo_trace_children_skip); 31119f91bbaedb4caef8a60ce94b0f507193cc0bc10florian HChar const* name = child_exe_name; 312064212709dc8988a48d2cbde5b90528952d8cd74sewardj while (*last) { 313064212709dc8988a48d2cbde5b90528952d8cd74sewardj Bool matches; 314064212709dc8988a48d2cbde5b90528952d8cd74sewardj HChar* patt; 315064212709dc8988a48d2cbde5b90528952d8cd74sewardj HChar const* first = consume_commas(last); 316064212709dc8988a48d2cbde5b90528952d8cd74sewardj last = consume_field(first); 317064212709dc8988a48d2cbde5b90528952d8cd74sewardj if (first == last) 318064212709dc8988a48d2cbde5b90528952d8cd74sewardj break; 319064212709dc8988a48d2cbde5b90528952d8cd74sewardj vg_assert(last > first); 320064212709dc8988a48d2cbde5b90528952d8cd74sewardj /* copy the candidate string into a temporary malloc'd block 321064212709dc8988a48d2cbde5b90528952d8cd74sewardj so we can use VG_(string_match) on it. */ 322064212709dc8988a48d2cbde5b90528952d8cd74sewardj patt = VG_(calloc)("m_options.swttc.1", last - first + 1, 1); 323064212709dc8988a48d2cbde5b90528952d8cd74sewardj VG_(memcpy)(patt, first, last - first); 324064212709dc8988a48d2cbde5b90528952d8cd74sewardj vg_assert(patt[last-first] == 0); 325064212709dc8988a48d2cbde5b90528952d8cd74sewardj matches = VG_(string_match)(patt, name); 326064212709dc8988a48d2cbde5b90528952d8cd74sewardj VG_(free)(patt); 327064212709dc8988a48d2cbde5b90528952d8cd74sewardj if (matches) 328064212709dc8988a48d2cbde5b90528952d8cd74sewardj return False; 329064212709dc8988a48d2cbde5b90528952d8cd74sewardj } 330064212709dc8988a48d2cbde5b90528952d8cd74sewardj } 3319ab64a4d3043c251561419d0e0f51492172b1072sewardj 3329ab64a4d3043c251561419d0e0f51492172b1072sewardj // Check if any of the args match any of the patterns specified 3339ab64a4d3043c251561419d0e0f51492172b1072sewardj // by --trace-children-skip-by-arg=. 3349ab64a4d3043c251561419d0e0f51492172b1072sewardj if (VG_(clo_trace_children_skip_by_arg) && child_argv != NULL) { 3359ab64a4d3043c251561419d0e0f51492172b1072sewardj HChar const* last = VG_(clo_trace_children_skip_by_arg); 3369ab64a4d3043c251561419d0e0f51492172b1072sewardj while (*last) { 3379ab64a4d3043c251561419d0e0f51492172b1072sewardj Int i; 3389ab64a4d3043c251561419d0e0f51492172b1072sewardj Bool matches; 3399ab64a4d3043c251561419d0e0f51492172b1072sewardj HChar* patt; 3409ab64a4d3043c251561419d0e0f51492172b1072sewardj HChar const* first = consume_commas(last); 3419ab64a4d3043c251561419d0e0f51492172b1072sewardj last = consume_field(first); 3429ab64a4d3043c251561419d0e0f51492172b1072sewardj if (first == last) 3439ab64a4d3043c251561419d0e0f51492172b1072sewardj break; 3449ab64a4d3043c251561419d0e0f51492172b1072sewardj vg_assert(last > first); 3459ab64a4d3043c251561419d0e0f51492172b1072sewardj /* copy the candidate string into a temporary malloc'd block 3469ab64a4d3043c251561419d0e0f51492172b1072sewardj so we can use VG_(string_match) on it. */ 3479ab64a4d3043c251561419d0e0f51492172b1072sewardj patt = VG_(calloc)("m_options.swttc.1", last - first + 1, 1); 3489ab64a4d3043c251561419d0e0f51492172b1072sewardj VG_(memcpy)(patt, first, last - first); 3499ab64a4d3043c251561419d0e0f51492172b1072sewardj vg_assert(patt[last-first] == 0); 3509ab64a4d3043c251561419d0e0f51492172b1072sewardj for (i = 0; child_argv[i]; i++) { 3519ab64a4d3043c251561419d0e0f51492172b1072sewardj matches = VG_(string_match)(patt, child_argv[i]); 3529ab64a4d3043c251561419d0e0f51492172b1072sewardj if (matches) { 3539ab64a4d3043c251561419d0e0f51492172b1072sewardj VG_(free)(patt); 3549ab64a4d3043c251561419d0e0f51492172b1072sewardj return False; 3559ab64a4d3043c251561419d0e0f51492172b1072sewardj } 3569ab64a4d3043c251561419d0e0f51492172b1072sewardj } 3579ab64a4d3043c251561419d0e0f51492172b1072sewardj VG_(free)(patt); 3589ab64a4d3043c251561419d0e0f51492172b1072sewardj } 3599ab64a4d3043c251561419d0e0f51492172b1072sewardj } 3609ab64a4d3043c251561419d0e0f51492172b1072sewardj 361064212709dc8988a48d2cbde5b90528952d8cd74sewardj // --trace-children=yes, and this particular executable isn't 362064212709dc8988a48d2cbde5b90528952d8cd74sewardj // excluded 363064212709dc8988a48d2cbde5b90528952d8cd74sewardj return True; 364064212709dc8988a48d2cbde5b90528952d8cd74sewardj} 365374a36dbfb6d08ed8d77c31a88e198a861ffadf0njn 3666893d65852940741dbebbc6ba1480e89cf34e30fsewardj 36732824028b51461062a5a282bfd775d4bd4ad6a47sewardj/*--------------------------------------------------------------------*/ 368b1cc5d666cc8f8065419e4a8c819ed0b8256a764njn/*--- end ---*/ 36932824028b51461062a5a282bfd775d4bd4ad6a47sewardj/*--------------------------------------------------------------------*/ 370