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/*
* ========================================================================
* Copyright 2006-2007 University of Washington
* Copyright 2013-2021 Eduardo Chappa
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* ========================================================================
*/
#include <system.h>
#include <general.h>
#include "../estruct.h"
#include "../mode.h"
#include "../pico.h"
#include "../edef.h"
#include "../efunc.h"
#include "../keydefs.h"
#include "filesys.h"
#include "../../pith/charconv/filesys.h"
#include "chkpoint.h"
/*
* chkptinit -- initialize anything we need to support composer
* checkpointing
*/
void
chkptinit(char *file, size_t filelen)
{
#ifndef _WINDOWS
unsigned pid;
char *chp;
#endif
if(!file[0]){
long gmode_save = gmode;
if(gmode&MDCURDIR)
gmode &= ~MDCURDIR; /* so fixpath will use home dir */
#ifndef _WINDOWS
strncpy(file, "#picoXXXXX#", filelen);
#else
strncpy(file, "#picoTM0.txt", filelen);
#endif
file[filelen-1] = '\0';
fixpath(file, filelen);
gmode = gmode_save;
}
else{
size_t l = strlen(file);
if(l+2 <= filelen && file[l-1] != C_FILESEP){
file[l++] = C_FILESEP;
file[l] = '\0';
}
#ifndef _WINDOWS
strncpy(file + l, "#picoXXXXX#", filelen-l);
#else
strncpy(file + l, "#picoTM0.txt", filelen-l);
#endif
file[filelen-1] = '\0';
}
#ifndef _WINDOWS
pid = (unsigned)getpid();
for(chp = file+strlen(file) - 2; *chp == 'X'; chp--){
*chp = (pid % 10) + '0';
pid /= 10;
}
#else
if(fexist(file, "r", (off_t *)NULL) == FIOSUC){ /* does file exist? */
char copy[NLINE];
strncpy(copy, "#picoTM1.txt", sizeof(copy));
copy[sizeof(copy)-1] = '\0';
fixpath(copy, sizeof(copy));
our_rename(file, copy); /* save so we don't overwrite it */
}
#endif /* _WINDOWS */
our_unlink(file);
}
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