mirror of
https://github.com/jart/cosmopolitan.git
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89 lines
4.4 KiB
C
89 lines
4.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/internal.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/dce.h"
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#include "libc/sysv/consts/ptrace.h"
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#include "libc/sysv/errfuns.h"
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static const char *__ptrace_describe_request(int x) {
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if (x == -1) return "-1";
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if (x == PTRACE_TRACEME) return "PTRACE_TRACEME";
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if (x == PTRACE_PEEKDATA) return "PTRACE_PEEKDATA";
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if (x == PTRACE_GETFPREGS) return "PTRACE_GETFPREGS";
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if (x == PTRACE_PEEKTEXT) return "PTRACE_PEEKTEXT";
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if (x == PTRACE_POKEDATA) return "PTRACE_POKEDATA";
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if (x == PTRACE_PEEKUSER) return "PTRACE_PEEKUSER";
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if (x == PTRACE_POKETEXT) return "PTRACE_POKETEXT";
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if (x == PTRACE_POKEUSER) return "PTRACE_POKEUSER";
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if (x == PTRACE_GETREGS) return "PTRACE_GETREGS";
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if (x == PTRACE_GETREGSET) return "PTRACE_GETREGSET";
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if (x == PTRACE_SETFPREGS) return "PTRACE_SETFPREGS";
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if (x == PTRACE_SETREGS) return "PTRACE_SETREGS";
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if (x == PTRACE_SETREGSET) return "PTRACE_SETREGSET";
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if (x == PTRACE_GETSIGINFO) return "PTRACE_GETSIGINFO";
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if (x == PTRACE_SETSIGINFO) return "PTRACE_SETSIGINFO";
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if (x == PTRACE_PEEKSIGINFO) return "PTRACE_PEEKSIGINFO";
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if (x == PTRACE_GETSIGMASK) return "PTRACE_GETSIGMASK";
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if (x == PTRACE_SETSIGMASK) return "PTRACE_SETSIGMASK";
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if (x == PTRACE_SETOPTIONS) return "PTRACE_SETOPTIONS";
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if (x == PTRACE_GETEVENTMSG) return "PTRACE_GETEVENTMSG";
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if (x == PTRACE_CONT) return "PTRACE_CONT";
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if (x == PTRACE_SINGLESTEP) return "PTRACE_SINGLESTEP";
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if (x == PTRACE_SYSCALL) return "PTRACE_SYSCALL";
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if (x == PTRACE_LISTEN) return "PTRACE_LISTEN";
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if (x == PTRACE_KILL) return "PTRACE_KILL";
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if (x == PTRACE_INTERRUPT) return "PTRACE_INTERRUPT";
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if (x == PTRACE_ATTACH) return "PTRACE_ATTACH";
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if (x == PTRACE_SEIZE) return "PTRACE_SEIZE";
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if (x == PTRACE_SECCOMP_GET_FILTER) return "PTRACE_SECCOMP_GET_FILTER";
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if (x == PTRACE_DETACH) return "PTRACE_DETACH";
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return "PTRACE_WUT";
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}
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/**
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* Traces process.
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*
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* @param request can be PTRACE_xxx
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* @note de facto linux only atm
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*/
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long ptrace(int request, ...) {
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// TODO(jart): FreeBSD addr and data args are different
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int pid;
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va_list va;
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bool ispeek;
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long rc, peek;
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void *addr, *data;
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va_start(va, request);
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pid = va_arg(va, int);
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addr = va_arg(va, void *);
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data = va_arg(va, void *);
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va_end(va);
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if (request == -1) {
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rc = einval(); /* see consts.sh */
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} else {
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ispeek = IsLinux() && request - 1u < 3;
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if (ispeek) data = &peek;
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rc = sys_ptrace(request, pid, addr, data);
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if (rc != -1 && ispeek) rc = peek;
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}
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STRACE("ptrace(%s, %d, %p, %p) → %ld% m", __ptrace_describe_request(request),
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pid, addr, data);
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return rc;
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}
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