gcc/libiberty/tmpnam.c
Gabriel Dos Reis 7a17ef5e63 ternary.h: Don't use PARAMS anymore.
include/
2005-03-27  Gabriel Dos Reis  <gdr@integreable-solutions.net>

        * ternary.h: Don't use PARAMS anymore.

libiberty/
2005-03-27  Gabriel Dos Reis  <gdr@integrable-solutions.net>

        Convert libiberty to use ISO C prototype style 6/n.
        * strerror.c (init_error_tables, errno_max, strerror,
        strerrno,
        strtoerrno, main): Use ISO C prototype style.
        * strncasecmp.c (strncasecmp): Likewise.
        * strncmp.c (strncmp): Likewise.
        * strndup.c (strndup): Likewise.
        * strrchr.c (strrchr): Likewise.
        * strsignal.c (init_signal_tables, signo_max, strsignal,
        strsigno, strtosigno, psignal, main): Likewise.
        * strstr.c (strstr): Likewise.
        * strtod.c (strtod, atof): Likewise.
        * strtol.c (strtol): Likewise.
        * strtoul.c (strtoul): Likewise.
        * ternary.c (ternary_insert, ternary_cleanup, ternary_search,
        ternary_recursivesearch): Likewise.
        * tmpnam.c (tmpnam): Likewise.
        * unlink-if-ordinary.c (unlink_if_ordinary): Likewise.
        * vasprintf.c (int_vasprintf, vasprintf, checkit, main):
        Likewise.
        * vfork.c (vfork): Likewise.
        * vfprintf.c (vfprintf): Likewise.
        * vprintf.c (vprintf): Likewise.
        * vsnprintf.c (vsnprintf, checkit, main): Likewise.
        * vsprintf.c (vsprintf): Likewise.
        * waitpid.c (waitpid): Likewise.
        * xatexit.c (xatexit, xatexit_cleanup): Likewise.
        * xexit.c (xexit): Likewise.
        * xmalloc.c (xmalloc_set_program_name, xmalloc_failed,
        xmalloc,
        xcalloc, xrealloc): Likewise.
        * xmemdup.c (xmemdup): Likewise.
        * xstrdup.c (xstrdup): Likewise.
        * xstrerror.c (xstrerror): Likewise.
        * xstrndup.c (xstrndup): Likewise.

From-SVN: r97122
2005-03-28 01:28:01 +00:00

53 lines
1.0 KiB
C

/*
@deftypefn Supplemental char* tmpnam (char *@var{s})
This function attempts to create a name for a temporary file, which
will be a valid file name yet not exist when @code{tmpnam} checks for
it. @var{s} must point to a buffer of at least @code{L_tmpnam} bytes,
or be @code{NULL}. Use of this function creates a security risk, and it must
not be used in new projects. Use @code{mkstemp} instead.
@end deftypefn
*/
#include <stdio.h>
#ifndef L_tmpnam
#define L_tmpnam 100
#endif
#ifndef P_tmpdir
#define P_tmpdir "/usr/tmp"
#endif
static char tmpnam_buffer[L_tmpnam];
static int tmpnam_counter;
extern int getpid (void);
char *
tmpnam (char *s)
{
int pid = getpid ();
if (s == NULL)
s = tmpnam_buffer;
/* Generate the filename and make sure that there isn't one called
it already. */
while (1)
{
FILE *f;
sprintf (s, "%s/%s%x.%x", P_tmpdir, "t", pid, tmpnam_counter);
f = fopen (s, "r");
if (f == NULL)
break;
tmpnam_counter++;
fclose (f);
}
return s;
}