faultinject.h

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/*
  Copyright (c) 2026 Andy Lemin (andylemin)
 
  This program 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 of the License, or
  (at your option) any later version.
 
  This program 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.
*/
 
#ifndef FAULTINJECT_H
#define FAULTINJECT_H
 
#include <sys/types.h>   /* off_t */
 
struct fault_inject {
    int open_armed;
    int open_fail_after;    
    int open_errno;
    int open_calls;         
    int open_last_flags;    
    int close_armed;
    int close_fail_after;
    int close_errno;
    int fcntl_armed;
    int fcntl_fail_after;
    int fcntl_errno;
    /* Observe the lock calls a probe issues, so a test can assert HOW it probed
     * (count, range, type), not just the result.  Updated on every F_GETLK/F_SETLK
     * fcntl when fcntl_watch is set; reset by fault_inject_reset(). */
    int   fcntl_watch;       
    int   getlk_calls;       
    int   setlk_calls;       
    int   lock_last_type;    
    off_t lock_last_start;   
    off_t lock_last_len;     
    int fchdir_armed;
    int fchdir_fail_after;
    int fchdir_errno;
    int dirfd_armed;
    int dirfd_fail_after;
    int dirfd_errno;
    int dirfd_calls;
    int dirfd_failed_fd;  
};
 
extern struct fault_inject fi;
 
void fault_inject_reset(void);
 
int faultinject_open_works(const char *scratch_path);
 
#endif /* FAULTINJECT_H */