strace/process.c

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/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
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* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Linux for s390 port by D.J. Barrow
* <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com>
* Copyright (c) 2000 PocketPenguins Inc. Linux for Hitachi SuperH
* port by Greg Banks <gbanks@pocketpenguins.com>
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*
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* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#ifdef HAVE_ELF_H
# include <elf.h>
#endif
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#include "xlat/nt_descriptor_types.h"
#include "regs.h"
#include "ptrace.h"
#include "xlat/ptrace_cmds.h"
#include "xlat/ptrace_setoptions_flags.h"
#define uoff(member) offsetof(struct user, member)
#define XLAT_UOFF(member) { uoff(member), "offsetof(struct user, " #member ")" }
static const struct xlat struct_user_offsets[] = {
#include "userent.h"
XLAT_END
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};
SYS_FUNC(ptrace)
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{
const struct xlat *x;
Fix compilation warnings reported by gcc -Wsign-compare * configure.ac (gl_WARN_ADD): Add -Wsign-compare. * defs.h (struct tcb): Change 'currpers' type to unsigned. (struct xlat): Change 'val' type to unsigned (signame): Add 'const' qualifier to its argument. (xlookup, printxval): Add 'const' qualifier to the 2nd argument and change its type to unsigned. (printpathn): Change the 3rd argument type to unsigned. (ioctl_lookup): Change 1st argument type to unsigned. * count.c (call_summary_pers, call_summary): Change 'i' type to unsigned. * file.c (print_xattr_list): Fix comparisons between signed and unsigned long values. * ioctl.c (compare): Fix cast. (ioctl_lookup): Change 1st argument type to to unsigned. (ioctl_next_match): Change 'code' type to unsigned. * mem.c (sys_move_pages): Change 'i' type to unsigned. * mtd.c (mtd_ioctl): Change 'i' and 'j' types to unsigned. Print 'i' using %u format string. * process.c (sys_prctl): Change 'i' type to unsigned. (printargv): Change 'n' type to unsigned. (sys_ptrace): Change 'addr' type to unsigned. * scsi.c (print_sg_io_buffer): Add 'const' qualifier to 'len' argument and change its type to unsigned. Change 'i' and 'allocated' types to unsigned. * signal.c (signame): Add 'const' qualifier to its argument. Fix comparisons between signed and unsigned values. (sprintsigmask_n, printsiginfo): Fix comparisons between signed and unsigned values. * sock.c (sock_ioctl): Change 'i' and 'nifra' types to unsigned. * strace.c (expand_tcbtab, alloctcb): Change 'i' type to unsigned. (detach): Change 'sig' type to unsigned. (startup_attach): Change 'tcbi' type to unsigned. (startup_child): Change 'm', 'n', and 'len' types to unsigned. (init): Use new variable to iterate 'tcbtab'. (pid2tcb): Change 'i' type to unsigned. (cleanup): Change 'i' and 'sig' types to unsigned. * syscall.c (update_personality): Change 'personality' argument type to unsigned. (struct qual_options): Change 'bitflag' type to unsigned. (reallocate_qual): Add 'const' qualifier to its argument and change its type to unsigned. (qualify_one): Change 'n' and 'bitflag' arguments types to unsigned. Add 'const' qualifier to 'n', 'not', and 'pers' arguments. Change 'p' type to signed int. (qual_syscall): Change 'bitflag' argument type to unsigned. Add 'const' qualifier to 'bitflag' and 'not' arguments. Change 'p' type to signed int. (qual_signal): Change 'bitflag' argument type to unsigned. Add 'const' qualifier to 'bitflag' and 'not' arguments. Change 'i' type to unsigned. (qual_desc): Change 'bitflag' argument type to unsigned. Add 'const' qualifier to 'bitflag' and 'not' arguments. (qualify): Change 'i' type to unsigned. (get_scno): Change 'currpers' type to unsigned. Fix a comparison between signed and unsigned values. * system.c (sys_sysctl): Change 'cnt' and 'max_cnt' types to unsigned. Fix comparisons between signed and unsigned values. * util.c (xlookup, printxval): Add 'const' qualifier to 'val' argument and change its type to unsigned. (printuid): Fix a comparison between signed and unsigned values. (printpathn): Change 'n' argument type to unsigned. (printstr): Change 'size' type to unsigned. Fix a comparison between signed and unsigned values. (setbpt): Change 'i' type to unsigned. * net.c (printsock): Silence a compilation warning. * reboot.c (sys_reboot): Likewise.
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unsigned long addr;
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if (entering(tcp)) {
printxval(ptrace_cmds, tcp->u_arg[0], "PTRACE_???");
tprintf(", %lu, ", tcp->u_arg[1]);
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addr = tcp->u_arg[2];
if (tcp->u_arg[0] == PTRACE_PEEKUSER
|| tcp->u_arg[0] == PTRACE_POKEUSER
) {
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for (x = struct_user_offsets; x->str; x++) {
if (x->val >= addr)
break;
}
if (!x->str)
tprintf("%#lx, ", addr);
else if (x->val > addr && x != struct_user_offsets) {
x--;
tprintf("%s + %ld, ", x->str, addr - x->val);
}
else
tprintf("%s, ", x->str);
} else
if (tcp->u_arg[0] == PTRACE_GETREGSET
|| tcp->u_arg[0] == PTRACE_SETREGSET
) {
printxval(nt_descriptor_types, tcp->u_arg[2], "NT_???");
tprints(", ");
} else
tprintf("%#lx, ", addr);
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switch (tcp->u_arg[0]) {
#ifndef IA64
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case PTRACE_PEEKDATA:
case PTRACE_PEEKTEXT:
case PTRACE_PEEKUSER:
break;
#endif
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case PTRACE_CONT:
case PTRACE_SINGLESTEP:
case PTRACE_SYSCALL:
case PTRACE_DETACH:
printsignal(tcp->u_arg[3]);
break;
case PTRACE_SETOPTIONS:
printflags(ptrace_setoptions_flags, tcp->u_arg[3], "PTRACE_O_???");
break;
case PTRACE_SETSIGINFO: {
printsiginfo_at(tcp, tcp->u_arg[3]);
break;
}
case PTRACE_SETREGSET:
tprint_iov(tcp, /*len:*/ 1, tcp->u_arg[3], /*as string:*/ 0);
break;
case PTRACE_GETSIGINFO:
case PTRACE_GETREGSET:
/* Don't print anything, do it at syscall return. */
break;
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default:
tprintf("%#lx", tcp->u_arg[3]);
break;
}
} else {
switch (tcp->u_arg[0]) {
case PTRACE_PEEKDATA:
case PTRACE_PEEKTEXT:
case PTRACE_PEEKUSER:
#ifdef IA64
return RVAL_HEX;
#else
printnum_long(tcp, tcp->u_arg[3], "%#lx");
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break;
#endif
case PTRACE_GETSIGINFO: {
printsiginfo_at(tcp, tcp->u_arg[3]);
break;
}
case PTRACE_GETREGSET:
tprint_iov(tcp, /*len:*/ 1, tcp->u_arg[3], /*as string:*/ 0);
break;
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}
}
return 0;
}