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/* `gcore' program for GNU Hurd: write a core dump from a running process.
Copyright (C) 1992,2001,2002 Free Software Foundation, Inc.
Written by Roland McGrath.
This file is part of the GNU Hurd.
The GNU Hurd 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, or (at your option)
any later version.
The GNU Hurd 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 the GNU Hurd; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdio.h>
#include <stdlib.h>
#include <hurd.h>
#include <hurd/crash.h>
#include <hurd/paths.h>
#include <fcntl.h>
#include <argp.h>
#include <error.h>
#include <version.h>
const char *argp_program_version = STANDARD_HURD_VERSION (gcore);
static const struct argp argp =
{
NULL, NULL,
"PID...",
"Generate a core dump file from a running process"
"\vFor each PID, a core dump file \"core.PID\" is written."
};
int
main (int argc, char **argv)
{
int status = 0;
file_t crashserv;
int argi;
argp_parse (&argp, argc, argv, 0, &argi, 0);
crashserv = file_name_lookup (_SERVERS_CRASH, 0, 0);
if (crashserv == MACH_PORT_NULL)
error (1, errno, "cannot reach crash server: %s", _SERVERS_CRASH);
for (; argi < argc; ++argi)
{
char *end;
pid_t pid;
task_t task;
pid = strtol (argv[argi], &end, 10);
if (end == argv[argi] || *end != '\0')
{
error (0, 0, "cannot parse process ID: %s", argv[argi]);
status = 1;
continue;
}
task = pid2task ((pid_t) pid);
if (task == MACH_PORT_NULL)
{
error (0, errno, "pid2task: %d", pid);
status = 1;
}
else
{
file_t file;
char *name = 0;
asprintf (&name, "core.%d", pid);
file = file_name_lookup (name, O_WRONLY|O_CREAT,
0600 &~ getumask ());
if (file == MACH_PORT_NULL)
{
error (0, errno, "cannot create %s", name);
status = 1;
}
else
{
error_t err = crash_dump_task (crashserv, task, file,
0, 0, 0, 0, 0, 0,
MACH_PORT_NULL,
MACH_MSG_TYPE_COPY_SEND);
mach_port_deallocate (mach_task_self (), file);
if (err)
{
(void) remove (name);
error (0, err, "crash_dump_task on %d to %s", pid, name);
status = 1;
}
free (name);
}
}
mach_port_deallocate (mach_task_self (), task);
}
return status;
}
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