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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#else
# include <string.h>
#endif /* HAVE_STRINGS_H */
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif /* HAVE_STDLIB_H */
#ifdef HAVE_SYS_FILE_H
# include <sys/file.h>
#endif /* HAVE_SYS_FILE_H */
#ifdef HAVE_IO_H
# include <io.h>
#endif /* HAVE_IO_H */
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif /* HAVE_FCNTL_H */
#include <limits.h>
#include <errno.h>
/* Generate a unique temporary file name from template. The last six characters of
template must be XXXXXX and these are replaced with a string that makes the
filename unique. */
int
mkstemp (template)
char *template;
{
int i, j, n, fd;
char *data = template + strlen(template) - 6;
if (data < template) {
errno = EINVAL;
return -1;
}
for (n = 0; n <= 5; n++)
if (data[n] != 'X') {
errno = EINVAL;
return -1;
}
for (i = 0; i < INT_MAX; i++) {
j = i ^ 827714841; /* Base 36 DOSSUX :-) */
for (n = 5; n >= 0; n--) {
data[n] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" [j % 36];
j /= 36;
}
fd = open (template, O_CREAT|O_EXCL|O_RDWR, 0600);
if (fd != -1)
return fd;
}
errno = EEXIST;
return -1;
}
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