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Last change
on this file since 10 was 10, checked in by bird, 22 years ago |
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Initial revision
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-
Property cvs2svn:cvs-rev
set to
1.1
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Property svn:eol-style
set to
native
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Property svn:executable
set to
*
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File size:
618 bytes
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| Line | |
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| 1 | #include <stdio.h>
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| 2 |
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| 3 | #ifndef L_tmpnam
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| 4 | #define L_tmpnam 100
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| 5 | #endif
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| 6 | #ifndef P_tmpdir
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| 7 | #define P_tmpdir "/usr/tmp"
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| 8 | #endif
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| 9 |
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| 10 | static char tmpnam_buffer[L_tmpnam];
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| 11 | static int tmpnam_counter;
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| 12 |
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| 13 | extern int getpid ();
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| 14 |
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| 15 | char *
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| 16 | tmpnam (s)
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| 17 | char *s;
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| 18 | {
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| 19 | int pid = getpid ();
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| 20 |
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| 21 | if (s == NULL)
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| 22 | s = tmpnam_buffer;
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| 23 |
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| 24 | /* Generate the filename and make sure that there isn't one called
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| 25 | it already. */
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| 26 |
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| 27 | while (1)
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| 28 | {
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| 29 | FILE *f;
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| 30 | sprintf (s, "%s/%s%x.%x", P_tmpdir, "t", pid, tmpnam_counter);
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| 31 | f = fopen (s, "r");
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| 32 | if (f == NULL)
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| 33 | break;
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| 34 | tmpnam_counter++;
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| 35 | fclose (f);
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| 36 | }
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| 37 |
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| 38 | return s;
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| 39 | }
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