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tdir1.c
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tdir1.c
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/* create a temporary directory which does not exist already.
* The while() clause takes care of this. Tested */
#include <sys/time.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <dirent.h>
#define GBUF 64
char *mktmpd(void)
{
struct timeval tsecs;
gettimeofday(&tsecs, NULL);
char *myt=calloc(14, sizeof(char));
strncpy(myt, "tmpdir_", 7);
sprintf(myt+7, "%lu", tsecs.tv_usec);
DIR *d;
while((d = opendir(myt)) != NULL) { /* see if a directory witht the same name exists ... very low likelihood though */
gettimeofday(&tsecs, NULL);
sprintf(myt+7, "%lu", tsecs.tv_usec);
closedir(d);
}
closedir(d);
mkdir(myt, S_IRWXU);
return myt;
}
int main(void)
{
char *tmpd=mktmpd();
printf("A unique temp directory called \"%s\" has been created.\n", tmpd);
int i;
FILE *fp;
char *fn=calloc(GBUF, sizeof(char));
for(i=0;i<5;++i) {
sprintf(fn, "%s/%i.wav", tmpd, i);
fp=fopen(fn, "w");
fclose(fp);
}
free(fn);
free(tmpd);
return EXIT_SUCCESS;
}