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#include <unistd.h>
#include <stdio.h>
#include "lock.h"
#include "socket.h"
// �������݃t�@�C���̕ی쏈��
// �i�������݂��I���܂ŁA���t�@�C����ۊǂ��Ă����j
// �V�����t�@�C���̏������݊J�n
FILE *lock_fopen (const char *filename, int *info)
{
char newfile[512];
FILE *fp;
int no = getpid ();
// ���S�ȃt�@�C������i�蔲���j
do
{
sprintf (newfile, "%s_%d.tmp", filename, no++);
}
while ((fp = fopen_ (newfile, "r")) && fclose_ (fp));
*info = --no;
return fopen_ (newfile, "w");
}
// ���t�@�C�����폜���V�t�@�C�������l�[��
int lock_fclose (FILE * fp, const char *filename, int *info)
{
int ret = 0;
char newfile[512];
if (fp != NULL)
{
ret = fclose_ (fp);
sprintf (newfile, "%s_%d.tmp", filename, *info);
remove (filename);
// ���̃^�C�~���O�ŗ�����ƍň��B
rename (newfile, filename);
return ret;
}
else
{
return 1;
}
}
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