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Makefile
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Makefile.depend
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Makefile.depend.options
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Makefile.inc
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_libproc.h
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crc32.c
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crc32.h
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libproc.h
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proc_bkpt.c
(6.94 KB)
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proc_create.c
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proc_regs.c
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proc_rtld.c
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proc_sym.c
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proc_util.c
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tests
Editing: proc_util.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2010 The FreeBSD Foundation * Copyright (c) 2008 John Birrell (jb@freebsd.org) * All rights reserved. * * Portions of this software were developed by Rui Paulo under sponsorship * from the FreeBSD Foundation. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/types.h> #include <sys/ptrace.h> #include <sys/wait.h> #include <err.h> #include <errno.h> #include <signal.h> #include <string.h> #include <unistd.h> #include "_libproc.h" int proc_clearflags(struct proc_handle *phdl, int mask) { if (phdl == NULL) return (EINVAL); phdl->flags &= ~mask; return (0); } /* * NB: we return -1 as the Solaris libproc Psetrun() function. */ int proc_continue(struct proc_handle *phdl) { int pending; if (phdl == NULL) return (-1); if (phdl->status == PS_STOP && WSTOPSIG(phdl->wstat) != SIGTRAP) pending = WSTOPSIG(phdl->wstat); else pending = 0; if (ptrace(PT_CONTINUE, proc_getpid(phdl), (caddr_t)(uintptr_t)1, pending) != 0) return (-1); phdl->status = PS_RUN; return (0); } int proc_detach(struct proc_handle *phdl, int reason) { int status; pid_t pid; if (phdl == NULL) return (EINVAL); if (reason == PRELEASE_HANG) return (EINVAL); if (reason == PRELEASE_KILL) { kill(proc_getpid(phdl), SIGKILL); goto free; } if ((phdl->flags & PATTACH_RDONLY) != 0) goto free; pid = proc_getpid(phdl); if (ptrace(PT_DETACH, pid, 0, 0) != 0 && errno == ESRCH) goto free; if (errno == EBUSY) { kill(pid, SIGSTOP); waitpid(pid, &status, WUNTRACED); ptrace(PT_DETACH, pid, 0, 0); kill(pid, SIGCONT); } free: proc_free(phdl); return (0); } int proc_getflags(struct proc_handle *phdl) { if (phdl == NULL) return (-1); return (phdl->flags); } int proc_setflags(struct proc_handle *phdl, int mask) { if (phdl == NULL) return (EINVAL); phdl->flags |= mask; return (0); } int proc_state(struct proc_handle *phdl) { if (phdl == NULL) return (-1); return (phdl->status); } int proc_getmodel(struct proc_handle *phdl) { if (phdl == NULL) return (-1); return (phdl->model); } int proc_wstatus(struct proc_handle *phdl) { int status; if (phdl == NULL) return (-1); if (waitpid(proc_getpid(phdl), &status, WUNTRACED) < 0) { if (errno != EINTR) DPRINTF("waitpid"); return (-1); } if (WIFSTOPPED(status)) phdl->status = PS_STOP; if (WIFEXITED(status) || WIFSIGNALED(status)) phdl->status = PS_UNDEAD; phdl->wstat = status; return (phdl->status); } int proc_getwstat(struct proc_handle *phdl) { if (phdl == NULL) return (-1); return (phdl->wstat); } char * proc_signame(int sig, char *name, size_t namesz) { strlcpy(name, strsignal(sig), namesz); return (name); } int proc_read(struct proc_handle *phdl, void *buf, size_t size, size_t addr) { struct ptrace_io_desc piod; if (phdl == NULL) return (-1); piod.piod_op = PIOD_READ_D; piod.piod_len = size; piod.piod_addr = (void *)buf; piod.piod_offs = (void *)addr; if (ptrace(PT_IO, proc_getpid(phdl), (caddr_t)&piod, 0) < 0) return (-1); return (piod.piod_len); } const lwpstatus_t * proc_getlwpstatus(struct proc_handle *phdl) { struct ptrace_lwpinfo lwpinfo; lwpstatus_t *psp = &phdl->lwps; siginfo_t *siginfo; if (phdl == NULL) return (NULL); if (ptrace(PT_LWPINFO, proc_getpid(phdl), (caddr_t)&lwpinfo, sizeof(lwpinfo)) < 0) return (NULL); siginfo = &lwpinfo.pl_siginfo; if (lwpinfo.pl_event == PL_EVENT_SIGNAL && (lwpinfo.pl_flags & PL_FLAG_SI) != 0) { if (siginfo->si_signo == SIGTRAP && (siginfo->si_code == TRAP_BRKPT || siginfo->si_code == TRAP_TRACE)) { psp->pr_why = PR_FAULTED; psp->pr_what = FLTBPT; } else { psp->pr_why = PR_SIGNALLED; psp->pr_what = siginfo->si_signo; } } else if (lwpinfo.pl_flags & PL_FLAG_SCE) { psp->pr_why = PR_SYSENTRY; } else if (lwpinfo.pl_flags & PL_FLAG_SCX) { psp->pr_why = PR_SYSEXIT; } return (psp); }
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