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|
/*--------------------------------------------------------------------*/
/*--- Command line options. ---*/
/*--- m_options.c ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2000-2009 Nicholas Nethercote
njn@valgrind.org
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; either version 2 of the
License, or (at your option) any later version.
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.
The GNU General Public License is contained in the file COPYING.
*/
#include "pub_core_basics.h"
#include "pub_core_vki.h"
#include "pub_core_options.h"
#include "pub_core_libcassert.h"
#include "pub_core_libcbase.h"
#include "pub_core_libcfile.h"
#include "pub_core_libcprint.h"
#include "pub_core_libcproc.h"
#include "pub_core_mallocfree.h"
// See pub_{core,tool}_options.h for explanations of all these.
/* Define, and set defaults. */
VexControl VG_(clo_vex_control);
Bool VG_(clo_error_limit) = True;
Int VG_(clo_error_exitcode) = 0;
Bool VG_(clo_db_attach) = False;
Char* VG_(clo_db_command) = GDB_PATH " -nw %f %p";
Int VG_(clo_gen_suppressions) = 0;
Int VG_(clo_sanity_level) = 1;
Int VG_(clo_verbosity) = 1;
Bool VG_(clo_xml) = False;
HChar* VG_(clo_xml_user_comment) = NULL;
Bool VG_(clo_demangle) = True;
Bool VG_(clo_trace_children) = False;
Bool VG_(clo_child_silent_after_fork) = False;
Int VG_(clo_log_fd) = 2; /* must be signed, as -1 is possible. */
Char* VG_(clo_log_name) = NULL;
Bool VG_(clo_time_stamp) = False;
Int VG_(clo_input_fd) = 0; /* stdin */
Int VG_(clo_n_suppressions) = 0;
Char* VG_(clo_suppressions)[VG_CLO_MAX_SFILES];
UChar VG_(clo_trace_flags) = 0; // 00000000b
UChar VG_(clo_profile_flags) = 0; // 00000000b
Int VG_(clo_trace_notbelow) = 999999999;
Bool VG_(clo_trace_syscalls) = False;
Bool VG_(clo_trace_signals) = False;
Bool VG_(clo_trace_symtab) = False;
HChar* VG_(clo_trace_symtab_patt) = "*";
Bool VG_(clo_trace_cfi) = False;
Bool VG_(clo_debug_dump_syms) = False;
Bool VG_(clo_debug_dump_line) = False;
Bool VG_(clo_debug_dump_frames) = False;
Bool VG_(clo_trace_redir) = False;
Bool VG_(clo_trace_sched) = False;
Bool VG_(clo_profile_heap) = False;
Int VG_(clo_dump_error) = 0;
Int VG_(clo_backtrace_size) = 12;
Char* VG_(clo_sim_hints) = NULL;
Bool VG_(clo_sym_offsets) = False;
Bool VG_(clo_read_var_info) = False;
Bool VG_(clo_run_libc_freeres) = True;
Bool VG_(clo_track_fds) = False;
Bool VG_(clo_show_below_main)= False;
Bool VG_(clo_show_emwarns) = False;
Word VG_(clo_max_stackframe) = 2000000;
Word VG_(clo_main_stacksize) = 0; /* use client's rlimit.stack */
Bool VG_(clo_wait_for_gdb) = False;
VgSmc VG_(clo_smc_check) = Vg_SmcStack;
HChar* VG_(clo_kernel_variant) = NULL;
/*====================================================================*/
/*=== Command line errors ===*/
/*====================================================================*/
static void revert_to_stderr ( void )
{
vg_assert( !VG_(logging_to_socket) );
VG_(clo_log_fd) = 2; /* stderr */
}
__attribute__((noreturn))
void VG_(err_bad_option) ( Char* opt )
{
revert_to_stderr();
VG_(printf)("valgrind: Bad option '%s'; aborting.\n", opt);
VG_(printf)("valgrind: Use --help for more information.\n");
VG_(exit)(1);
}
__attribute__((noreturn))
void VG_(err_missing_prog) ( void )
{
revert_to_stderr();
VG_(printf)("valgrind: no program specified\n");
VG_(printf)("valgrind: Use --help for more information.\n");
VG_(exit)(1);
}
__attribute__((noreturn))
void VG_(err_config_error) ( Char* msg )
{
revert_to_stderr();
VG_(printf)("valgrind: Startup or configuration error:\n %s\n", msg);
VG_(printf)("valgrind: Unable to start up properly. Giving up.\n");
VG_(exit)(1);
}
// Copies the string, prepending it with the startup working directory, and
// expanding %p and %q entries. Returns a new, malloc'd string.
Char* VG_(expand_file_name)(Char* option_name, Char* format)
{
static Char base_dir[VKI_PATH_MAX];
Int len, i = 0, j = 0;
Char* out;
Bool ok = VG_(get_startup_wd)(base_dir, VKI_PATH_MAX);
tl_assert(ok);
if (VG_STREQ(format, "")) {
// Empty name, bad.
VG_(message)(Vg_UserMsg, "%s: filename is empty", option_name);
goto bad;
}
// If 'format' starts with a '/', do not prefix with startup dir.
if (format[0] != '/') {
j += VG_(strlen)(base_dir);
}
// The 10 is slop, it should be enough in most cases.
len = j + VG_(strlen)(format) + 10;
out = VG_(malloc)( "options.efn.1", len );
if (format[0] != '/') {
VG_(strcpy)(out, base_dir);
out[j++] = '/';
}
#define ENSURE_THIS_MUCH_SPACE(x) \
if (j + x >= len) { \
len += (10 + x); \
out = VG_(realloc)("options.efn.2(multiple)", out, len); \
}
while (format[i]) {
if (format[i] != '%') {
ENSURE_THIS_MUCH_SPACE(1);
out[j++] = format[i++];
} else {
// We saw a '%'. What's next...
i++;
if ('%' == format[i]) {
// Replace '%%' with '%'.
ENSURE_THIS_MUCH_SPACE(1);
out[j++] = format[i++];
}
else if ('p' == format[i]) {
// Print the PID. Assume that it's not longer than 10 chars --
// reasonable since 'pid' is an Int (ie. 32 bits).
Int pid = VG_(getpid)();
ENSURE_THIS_MUCH_SPACE(10);
j += VG_(sprintf)(&out[j], "%d", pid);
i++;
}
else if ('q' == format[i]) {
i++;
if ('{' == format[i]) {
// Get the env var name, print its contents.
Char* qualname;
Char* qual;
i++;
qualname = &format[i];
while (True) {
if (0 == format[i]) {
VG_(message)(Vg_UserMsg, "%s: malformed %%q specifier",
option_name);
goto bad;
} else if ('}' == format[i]) {
// Temporarily replace the '}' with NUL to extract var
// name.
format[i] = 0;
qual = VG_(getenv)(qualname);
if (NULL == qual) {
VG_(message)(Vg_UserMsg,
"%s: environment variable %s is not set",
option_name, qualname);
format[i] = '}'; // Put the '}' back.
goto bad;
}
format[i] = '}'; // Put the '}' back.
i++;
break;
}
i++;
}
ENSURE_THIS_MUCH_SPACE(VG_(strlen)(qual));
j += VG_(sprintf)(&out[j], "%s", qual);
} else {
VG_(message)(Vg_UserMsg,
"%s: expected '{' after '%%q'", option_name);
goto bad;
}
}
else {
// Something else, abort.
VG_(message)(Vg_UserMsg,
"%s: expected 'p' or 'q' or '%%' after '%%'", option_name);
goto bad;
}
}
}
ENSURE_THIS_MUCH_SPACE(1);
out[j++] = 0;
return out;
bad: {
Char* opt = // 2: 1 for the '=', 1 for the NUL.
VG_(malloc)( "options.efn.3",
VG_(strlen)(option_name) + VG_(strlen)(format) + 2 );
VG_(strcpy)(opt, option_name);
VG_(strcat)(opt, "=");
VG_(strcat)(opt, format);
VG_(err_bad_option)(opt);
}
}
/*--------------------------------------------------------------------*/
/*--- end m_options.c ---*/
/*--------------------------------------------------------------------*/
|
