diff options
Diffstat (limited to 'usr.bin/pmdb/process.c')
| -rw-r--r-- | usr.bin/pmdb/process.c | 43 |
1 files changed, 29 insertions, 14 deletions
diff --git a/usr.bin/pmdb/process.c b/usr.bin/pmdb/process.c index 1e7f1d694ab..86ee73dd1a0 100644 --- a/usr.bin/pmdb/process.c +++ b/usr.bin/pmdb/process.c @@ -1,4 +1,4 @@ -/* $OpenBSD: process.c,v 1.3 2002/03/19 07:26:58 fgsch Exp $ */ +/* $OpenBSD: process.c,v 1.4 2002/06/09 02:44:13 todd Exp $ */ /* * Copyright (c) 2002 Artur Grabowski <art@openbsd.org> * All rights reserved. @@ -27,6 +27,8 @@ #include <sys/types.h> #include <sys/ptrace.h> #include <sys/wait.h> +#include <sys/stat.h> + #include <err.h> #include <errno.h> #include <signal.h> @@ -53,18 +55,32 @@ process_load(struct pstate *ps) return (0); } - switch (ps->ps_pid = fork()) { - case 0: - if (ptrace(PT_TRACE_ME, getpid(), NULL, 0) != 0) - err(1, "ptrace(PT_TRACE_ME)"); - execvp(*ps->ps_argv, ps->ps_argv); - err(1, "exec"); - /* NOTREACHED */ - case -1: - err(1, "fork"); - /* NOTREACHED */ - default: - break; + if (stat(ps->ps_argv[0], &(ps->exec_stat)) < 0) + err(1, "stat()"); + + if (ps->ps_pid != 0) { + /* attach to an already running process */ + if (ptrace(PT_ATTACH, ps->ps_pid, (caddr_t) 0, 0) < 0) + err(1, "failed to ptrace process"); + ps->ps_state = STOPPED; + ps->ps_flags |= PSF_ATCH; + } + else { + switch (ps->ps_pid = fork()) { + case 0: + if (ptrace(PT_TRACE_ME, getpid(), NULL, 0) != 0) + err(1, "ptrace(PT_TRACE_ME)"); + execvp(*ps->ps_argv, ps->ps_argv); + err(1, "exec"); + /* NOTREACHED */ + case -1: + err(1, "fork"); + /* NOTREACHED */ + default: + break; + } + + ps->ps_state = LOADED; } if ((ps->ps_flags & PSF_SYMBOLS) == 0) { @@ -75,7 +91,6 @@ process_load(struct pstate *ps) if (wait(&status) == 0) err(1, "wait"); - ps->ps_state = LOADED; return 0; } |