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Diffstat (limited to 'REORG.TODO/support/temp_file.c')
| -rw-r--r-- | REORG.TODO/support/temp_file.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/REORG.TODO/support/temp_file.c b/REORG.TODO/support/temp_file.c new file mode 100644 index 0000000000..fdb2477ab9 --- /dev/null +++ b/REORG.TODO/support/temp_file.c @@ -0,0 +1,132 @@ +/* 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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +/* List of temporary files. */ +static struct temp_name_list +{ + struct temp_name_list *next; + char *name; + pid_t owner; +} *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; + newp->next = temp_name_list; + newp->owner = getpid (); + temp_name_list = newp; + } + 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) +{ + pid_t pid = getpid (); + while (temp_name_list != NULL) + { + /* Only perform the removal if the path was registed in the same + process, as identified by the PID. (This assumes that the + parent process which registered the temporary file sticks + around, to prevent PID reuse.) */ + if (temp_name_list->owner == pid) + { + if (remove (temp_name_list->name) != 0) + printf ("warning: could not remove temporary file: %s: %m\n", + temp_name_list->name); + } + free (temp_name_list->name); + + struct temp_name_list *next = temp_name_list->next; + 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 = n->next) + fprintf (f, " '%s'\n", n->name); + fprintf (f, ")\n"); + } +} |