/usr/src/blcr-0.8.5/libcr/cr_syscall.h is in blcr-dkms 0.8.5-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Berkeley Lab Checkpoint/Restart (BLCR) for Linux is Copyright (c)
* 2007, The Regents of the University of California, through Lawrence
* Berkeley National Laboratory (subject to receipt of any required
* approvals from the U.S. Dept. of Energy). All rights reserved.
*
* Portions may be copyrighted by others, as may be noted in specific
* copyright notices within specific files.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: cr_syscall.h,v 1.14 2008/05/11 06:52:17 phargrov Exp $
*/
#ifndef _CR_SYSCALL_H
#define _CR_SYSCALL_H 1
#include "blcr_config.h"
#include <features.h>
#include <time.h> // for (struct timespec)
#include <signal.h> // for siginfo_t and sigset_t
#include <stdint.h> // for uintptr_t
#ifndef CRI_SYSCALL_NOARG
#define CRI_SYSCALL_NOARG ((uintptr_t)(-1L))
#endif
// arguments to rt_sigaction system call
struct k_sigaction {
void (*ksa_sigaction) (int, siginfo_t *, void *);
unsigned long ksa_flags;
void (*ksa_restorer)(void);
sigset_t ksa_mask; /* mask moved last for extensibility */
};
// Establish "connection" to blcr kernel module
extern int cri_connect(void);
extern void cri_disconnect(void);
// Call the blcr kernel module w/ the default "connection"
extern int cri_syscall(int op, uintptr_t arg);
extern int __cri_syscall(int op, uintptr_t arg, int * errno_p);
// Manually manage connection(s) to the blcr kernel module
// The value returned by cri_connect_token(), if non-negative,
// should be passed as the 'token' argument to the other calls.
// It is currently just the fd, but that could change some day.
extern int cri_connect_token(void);
extern void cri_disconnect_token(int token);
extern int cri_syscall_token(int token, int op, uintptr_t arg);
extern int __cri_syscall_token(int token, int op, uintptr_t arg, int * errno_p);
// Special case for CR_OP_HAND_CHKPT to allow arch-specific register saves
extern int __cri_chkpt(int fd, int cmd, void * arg, int * errno_p);
// Direct system calls, bypassing any pthread wrappers
extern int __cri_ioctl(int fd, int cmd, void * arg, int * errno_p);
extern int __cri_open(const char * pathname, int flags, int mode, int * errno_p);
extern int __cri_close(int fd, int * errno_p);
extern int __cri_sched_yield(int * errno_p);
extern int __cri_nanosleep(const struct timespec * req, struct timespec * rem, int * errno_p);
extern int __cri_exit(int code, int * errno_p);
extern int __cri_exit_group(int code, int * errno_p);
extern int __cri_ksigaction(int signum, const struct k_sigaction *act,
struct k_sigaction *oldact, size_t setsize, int * errno_p);
#endif /* _CR_SYSCALL_H */
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