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/* Temporary file handling for tests.
Copyright (C) 1998-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* This is required to get an mkstemp which can create large files on
some 32-bit platforms. */
#define _FILE_OFFSET_BITS 64
#include <support/temp_file.h>
#include <support/temp_file-internal.h>
#include <support/support.h>
#include <paths.h>
#include <search.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* List of temporary files. */
static struct temp_name_list
{
struct qelem q;
char *name;
} *temp_name_list;
/* Location of the temporary files. Set by the test skeleton via
support_set_test_dir. The string is not be freed. */
static const char *test_dir = _PATH_TMP;
void
add_temp_file (const char *name)
{
struct temp_name_list *newp
= (struct temp_name_list *) xcalloc (sizeof (*newp), 1);
char *newname = strdup (name);
if (newname != NULL)
{
newp->name = newname;
if (temp_name_list == NULL)
temp_name_list = (struct temp_name_list *) &newp->q;
else
insque (newp, temp_name_list);
}
else
free (newp);
}
int
create_temp_file (const char *base, char **filename)
{
char *fname;
int fd;
fname = (char *) xmalloc (strlen (test_dir) + 1 + strlen (base)
+ sizeof ("XXXXXX"));
strcpy (stpcpy (stpcpy (stpcpy (fname, test_dir), "/"), base), "XXXXXX");
fd = mkstemp (fname);
if (fd == -1)
{
printf ("cannot open temporary file '%s': %m\n", fname);
free (fname);
return -1;
}
add_temp_file (fname);
if (filename != NULL)
*filename = fname;
else
free (fname);
return fd;
}
/* Helper functions called by the test skeleton follow. */
void
support_set_test_dir (const char *path)
{
test_dir = path;
}
void
support_delete_temp_files (void)
{
while (temp_name_list != NULL)
{
/* For some tests, the temporary file removal runs multiple
times (in the parent processes and the subprocess), so do not
report a failed removal attempt. */
(void) remove (temp_name_list->name);
free (temp_name_list->name);
struct temp_name_list *next
= (struct temp_name_list *) temp_name_list->q.q_forw;
free (temp_name_list);
temp_name_list = next;
}
}
void
support_print_temp_files (FILE *f)
{
if (temp_name_list != NULL)
{
struct temp_name_list *n;
fprintf (f, "temp_files=(\n");
for (n = temp_name_list;
n != NULL;
n = (struct temp_name_list *) n->q.q_forw)
fprintf (f, " '%s'\n", n->name);
fprintf (f, ")\n");
}
}
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