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40 lines
619 B
C
40 lines
619 B
C
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#include <stdio.h>
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#ifndef L_tmpnam
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#define L_tmpname 100
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#endif
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#ifndef P_tmpdir
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#define P_tmpdir "/usr/tmp"
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#endif
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static char tmpnam_buffer[L_tmpnam];
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static int tmpnam_counter;
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extern int getpid ();
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char *
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tmpnam (s)
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char *s;
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{
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int pid = getpid ();
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if (s == NULL)
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s = tmpnam_buffer;
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/* Generate the filename and make sure that there isn't one called
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it already. */
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while (1)
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{
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FILE *f;
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sprintf (s, "%s/%s%x.%x", P_tmpdir, "t", pid, tmpnam_counter);
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f = fopen (s, "r");
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if (f == NULL)
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break;
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tmpnam_counter++;
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fclose (f);
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}
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return s;
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}
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