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Annotation of 43BSD/lib/libc/gen/mkstemp.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #if defined(LIBC_SCCS) && !defined(lint)
        !             8: static char sccsid[] = "@(#)mkstemp.c  5.2 (Berkeley) 3/9/86";
        !             9: #endif LIBC_SCCS and not lint
        !            10: 
        !            11: #include <sys/file.h>
        !            12: 
        !            13: mkstemp(as)
        !            14:        char *as;
        !            15: {
        !            16:        register char *s;
        !            17:        register unsigned int pid;
        !            18:        register int fd, i;
        !            19: 
        !            20:        pid = getpid();
        !            21:        s = as;
        !            22:        while (*s++)
        !            23:                /* void */;
        !            24:        s--;
        !            25:        while (*--s == 'X') {
        !            26:                *s = (pid % 10) + '0';
        !            27:                pid /= 10;
        !            28:        }
        !            29:        s++;
        !            30:        i = 'a';
        !            31:        while ((fd = open(as, O_CREAT|O_EXCL|O_RDWR, 0600)) == -1) {
        !            32:                if (i == 'z')
        !            33:                        return(-1);
        !            34:                *s = i++;
        !            35:        }
        !            36:        return(fd);
        !            37: }

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