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authorZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
committerZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
commit5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch)
tree4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/io/test-lfs.c
parent199fc19d3aaaf57944ef036e15904febe877fc93 (diff)
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Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/io/test-lfs.c')
-rw-r--r--REORG.TODO/io/test-lfs.c241
1 files changed, 241 insertions, 0 deletions
diff --git a/REORG.TODO/io/test-lfs.c b/REORG.TODO/io/test-lfs.c
new file mode 100644
index 0000000000..14773544da
--- /dev/null
+++ b/REORG.TODO/io/test-lfs.c
@@ -0,0 +1,241 @@
+/* Some basic tests for LFS.
+ Copyright (C) 2000-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Jaeger <aj@suse.de>, 2000.
+
+ 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/>. */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <error.h>
+#include <errno.h>
+#include <sys/resource.h>
+
+/* Prototype for our test function. */
+extern void do_prepare (int argc, char *argv[]);
+extern int do_test (int argc, char *argv[]);
+
+/* We have a preparation function. */
+#define PREPARE do_prepare
+
+/* We might need a bit longer timeout. */
+#define TIMEOUT 20 /* sec */
+
+/* This defines the `main' function and some more. */
+#include <test-skeleton.c>
+
+/* These are for the temporary file we generate. */
+char *name;
+int fd;
+
+/* 2^31 = 2GB. */
+#define TWO_GB 2147483648LL
+
+void
+do_prepare (int argc, char *argv[])
+{
+ size_t name_len;
+ struct rlimit64 rlim;
+
+ name_len = strlen (test_dir);
+ name = xmalloc (name_len + sizeof ("/lfsXXXXXX"));
+ mempcpy (mempcpy (name, test_dir, name_len),
+ "/lfsXXXXXX", sizeof ("/lfsXXXXXX"));
+
+ /* Open our test file. */
+ fd = mkstemp64 (name);
+ if (fd == -1)
+ {
+ if (errno == ENOSYS)
+ {
+ /* Fail silently. */
+ error (0, 0, "open64 is not supported");
+ exit (EXIT_SUCCESS);
+ }
+ else
+ error (EXIT_FAILURE, errno, "cannot create temporary file");
+ }
+ add_temp_file (name);
+
+ if (getrlimit64 (RLIMIT_FSIZE, &rlim) != 0)
+ {
+ error (0, errno, "cannot get resource limit");
+ exit (0);
+ }
+ if (rlim.rlim_cur < TWO_GB + 200)
+ {
+ rlim.rlim_cur = TWO_GB + 200;
+ if (setrlimit64 (RLIMIT_FSIZE, &rlim) != 0)
+ {
+ error (0, errno, "cannot reset file size limits");
+ exit (0);
+ }
+ }
+}
+
+static void
+test_ftello (void)
+{
+ FILE *f;
+ int ret;
+ off64_t pos;
+
+ f = fopen64 (name, "w");
+
+ ret = fseeko64 (f, TWO_GB+100, SEEK_SET);
+ if (ret == -1 && errno == ENOSYS)
+ {
+ error (0, 0, "fseeko64 is not supported.");
+ exit (EXIT_SUCCESS);
+ }
+ if (ret == -1 && errno == EINVAL)
+ {
+ error (0, 0, "LFS seems not to be supported");
+ exit (EXIT_SUCCESS);
+ }
+ if (ret == -1)
+ {
+ error (0, errno, "fseeko64 failed with error");
+ exit (EXIT_FAILURE);
+ }
+
+ ret = fwrite ("Hello", 1, 5, f);
+ if (ret == -1 && errno == EFBIG)
+ {
+ error (0, errno, "LFS seems not to be supported");
+ exit (EXIT_SUCCESS);
+ }
+
+ if (ret == -1 && errno == ENOSPC)
+ {
+ error (0, 0, "Not enough space to write file.");
+ exit (EXIT_SUCCESS);
+ }
+
+ if (ret != 5)
+ error (EXIT_FAILURE, errno, "Cannot write test string to large file");
+
+ pos = ftello64 (f);
+
+ if (pos != TWO_GB+105)
+ {
+ error (0, 0, "ftello64 gives wrong result.");
+ exit (EXIT_FAILURE);
+ }
+
+ fclose (f);
+}
+
+int
+do_test (int argc, char *argv[])
+{
+ int ret, fd2;
+ struct stat64 statbuf;
+
+ ret = lseek64 (fd, TWO_GB+100, SEEK_SET);
+ if (ret == -1 && errno == ENOSYS)
+ {
+ error (0, 0, "lseek64 is not supported.");
+ exit (EXIT_SUCCESS);
+ }
+ if (ret == -1 && errno == EINVAL)
+ {
+ error (0, 0, "LFS seems not to be supported.");
+ exit (EXIT_SUCCESS);
+ }
+ if (ret == -1)
+ {
+ error (0, errno, "lseek64 failed with error");
+ exit (EXIT_FAILURE);
+ }
+ off64_t offset64 = lseek64 (fd, 0, SEEK_CUR);
+ if (offset64 != TWO_GB + 100)
+ {
+ error (0, 0, "lseek64 did not return expected offset");
+ exit (EXIT_FAILURE);
+ }
+ off_t offset = lseek (fd, 0, SEEK_CUR);
+ if (sizeof (off_t) < sizeof (off64_t))
+ {
+ if (offset != -1 || errno != EOVERFLOW)
+ {
+ error (0, 0, "lseek did not fail with EOVERFLOW");
+ exit (EXIT_FAILURE);
+ }
+ }
+ else
+ if (offset != TWO_GB + 100)
+ {
+ error (0, 0, "lseek did not return expected offset");
+ exit (EXIT_FAILURE);
+ }
+
+ ret = write (fd, "Hello", 5);
+ if (ret == -1 && errno == EFBIG)
+ {
+ error (0, 0, "LFS seems not to be supported.");
+ exit (EXIT_SUCCESS);
+ }
+
+ if (ret == -1 && errno == ENOSPC)
+ {
+ error (0, 0, "Not enough space to write file.");
+ exit (EXIT_SUCCESS);
+ }
+
+ if (ret != 5)
+ error (EXIT_FAILURE, errno, "cannot write test string to large file");
+
+ ret = close (fd);
+
+ if (ret == -1)
+ error (EXIT_FAILURE, errno, "error closing file");
+
+ ret = stat64 (name, &statbuf);
+
+ if (ret == -1 && (errno == ENOSYS || errno == EOVERFLOW))
+ error (0, 0, "stat64 is not supported.");
+ else if (ret == -1)
+ error (EXIT_FAILURE, errno, "cannot stat file `%s'", name);
+ else if (statbuf.st_size != (TWO_GB + 100 + 5))
+ error (EXIT_FAILURE, 0, "stat reported size %lld instead of %lld.",
+ (long long int) statbuf.st_size, (TWO_GB + 100 + 5));
+
+ fd2 = openat64 (AT_FDCWD, name, O_RDWR);
+ if (fd2 == -1)
+ {
+ if (errno == ENOSYS)
+ {
+ /* Silently ignore this test. */
+ error (0, 0, "openat64 is not supported");
+ }
+ else
+ error (EXIT_FAILURE, errno, "openat64 failed to open big file");
+ }
+ else
+ {
+ ret = close (fd2);
+
+ if (ret == -1)
+ error (EXIT_FAILURE, errno, "error closing file");
+ }
+
+ test_ftello ();
+
+ return 0;
+}