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30891f35fa
We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
481 lines
12 KiB
C
481 lines
12 KiB
C
/* Tests of fseek and fseeko.
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Copyright (C) 2000-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <error.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <time.h>
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#include <sys/stat.h>
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static int
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do_test (void)
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{
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const char *tmpdir;
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char *fname;
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int fd;
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FILE *fp;
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const char outstr[] = "hello world!\n";
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char strbuf[sizeof outstr];
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char buf[200];
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struct stat64 st1;
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struct stat64 st2;
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int result = 0;
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tmpdir = getenv ("TMPDIR");
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if (tmpdir == NULL || tmpdir[0] == '\0')
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tmpdir = "/tmp";
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asprintf (&fname, "%s/tst-fseek.XXXXXX", tmpdir);
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if (fname == NULL)
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error (EXIT_FAILURE, errno, "cannot generate name for temporary file");
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/* Create a temporary file. */
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fd = mkstemp (fname);
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if (fd == -1)
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error (EXIT_FAILURE, errno, "cannot open temporary file");
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fp = fdopen (fd, "w+");
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if (fp == NULL)
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error (EXIT_FAILURE, errno, "cannot get FILE for temporary file");
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setbuffer (fp, strbuf, sizeof (outstr) -1);
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if (fwrite (outstr, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: write error\n", __LINE__);
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result = 1;
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goto out;
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}
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/* The EOF flag must be reset. */
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if (fgetc (fp) != EOF)
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{
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printf ("%d: managed to read at end of file\n", __LINE__);
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result = 1;
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}
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else if (! feof (fp))
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{
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printf ("%d: EOF flag not set\n", __LINE__);
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result = 1;
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}
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if (fseek (fp, 0, SEEK_CUR) != 0)
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{
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printf ("%d: fseek(fp, 0, SEEK_CUR) failed\n", __LINE__);
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result = 1;
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}
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else if (feof (fp))
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{
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printf ("%d: fseek() didn't reset EOF flag\n", __LINE__);
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result = 1;
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}
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/* Do the same for fseeko(). */
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if (fgetc (fp) != EOF)
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{
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printf ("%d: managed to read at end of file\n", __LINE__);
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result = 1;
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}
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else if (! feof (fp))
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{
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printf ("%d: EOF flag not set\n", __LINE__);
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result = 1;
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}
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if (fseeko (fp, 0, SEEK_CUR) != 0)
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{
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printf ("%d: fseek(fp, 0, SEEK_CUR) failed\n", __LINE__);
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result = 1;
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}
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else if (feof (fp))
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{
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printf ("%d: fseek() didn't reset EOF flag\n", __LINE__);
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result = 1;
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}
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/* Go back to the beginning of the file: absolute. */
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if (fseek (fp, 0, SEEK_SET) != 0)
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{
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printf ("%d: fseek(fp, 0, SEEK_SET) failed\n", __LINE__);
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result = 1;
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}
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else if (fflush (fp) != 0)
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{
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printf ("%d: fflush() failed\n", __LINE__);
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result = 1;
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}
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else if (lseek (fd, 0, SEEK_CUR) != 0)
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{
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printf ("%d: lseek() returned different position\n", __LINE__);
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result = 1;
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}
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else if (fread (buf, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: fread() failed\n", __LINE__);
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result = 1;
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}
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else if (memcmp (buf, outstr, sizeof (outstr) - 1) != 0)
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{
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printf ("%d: content after fseek(,,SEEK_SET) wrong\n", __LINE__);
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result = 1;
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}
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/* Now with fseeko. */
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if (fseeko (fp, 0, SEEK_SET) != 0)
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{
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printf ("%d: fseeko(fp, 0, SEEK_SET) failed\n", __LINE__);
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result = 1;
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}
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else if (fflush (fp) != 0)
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{
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printf ("%d: fflush() failed\n", __LINE__);
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result = 1;
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}
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else if (lseek (fd, 0, SEEK_CUR) != 0)
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{
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printf ("%d: lseek() returned different position\n", __LINE__);
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result = 1;
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}
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else if (fread (buf, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: fread() failed\n", __LINE__);
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result = 1;
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}
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else if (memcmp (buf, outstr, sizeof (outstr) - 1) != 0)
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{
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printf ("%d: content after fseeko(,,SEEK_SET) wrong\n", __LINE__);
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result = 1;
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}
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/* Go back to the beginning of the file: relative. */
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if (fseek (fp, -((int) sizeof (outstr) - 1), SEEK_CUR) != 0)
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{
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printf ("%d: fseek(fp, 0, SEEK_SET) failed\n", __LINE__);
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result = 1;
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}
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else if (fflush (fp) != 0)
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{
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printf ("%d: fflush() failed\n", __LINE__);
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result = 1;
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}
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else if (lseek (fd, 0, SEEK_CUR) != 0)
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{
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printf ("%d: lseek() returned different position\n", __LINE__);
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result = 1;
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}
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else if (fread (buf, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: fread() failed\n", __LINE__);
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result = 1;
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}
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else if (memcmp (buf, outstr, sizeof (outstr) - 1) != 0)
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{
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printf ("%d: content after fseek(,,SEEK_SET) wrong\n", __LINE__);
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result = 1;
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}
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/* Now with fseeko. */
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if (fseeko (fp, -((int) sizeof (outstr) - 1), SEEK_CUR) != 0)
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{
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printf ("%d: fseeko(fp, 0, SEEK_SET) failed\n", __LINE__);
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result = 1;
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}
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else if (fflush (fp) != 0)
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{
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printf ("%d: fflush() failed\n", __LINE__);
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result = 1;
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}
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else if (lseek (fd, 0, SEEK_CUR) != 0)
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{
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printf ("%d: lseek() returned different position\n", __LINE__);
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result = 1;
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}
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else if (fread (buf, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: fread() failed\n", __LINE__);
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result = 1;
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}
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else if (memcmp (buf, outstr, sizeof (outstr) - 1) != 0)
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{
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printf ("%d: content after fseeko(,,SEEK_SET) wrong\n", __LINE__);
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result = 1;
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}
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/* Go back to the beginning of the file: from the end. */
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if (fseek (fp, -((int) sizeof (outstr) - 1), SEEK_END) != 0)
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{
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printf ("%d: fseek(fp, 0, SEEK_SET) failed\n", __LINE__);
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result = 1;
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}
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else if (fflush (fp) != 0)
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{
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printf ("%d: fflush() failed\n", __LINE__);
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result = 1;
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}
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else if (lseek (fd, 0, SEEK_CUR) != 0)
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{
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printf ("%d: lseek() returned different position\n", __LINE__);
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result = 1;
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}
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else if (fread (buf, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: fread() failed\n", __LINE__);
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result = 1;
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}
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else if (memcmp (buf, outstr, sizeof (outstr) - 1) != 0)
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{
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printf ("%d: content after fseek(,,SEEK_SET) wrong\n", __LINE__);
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result = 1;
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}
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/* Now with fseeko. */
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if (fseeko (fp, -((int) sizeof (outstr) - 1), SEEK_END) != 0)
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{
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printf ("%d: fseeko(fp, 0, SEEK_SET) failed\n", __LINE__);
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result = 1;
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}
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else if (fflush (fp) != 0)
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{
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printf ("%d: fflush() failed\n", __LINE__);
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result = 1;
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}
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else if (lseek (fd, 0, SEEK_CUR) != 0)
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{
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printf ("%d: lseek() returned different position\n", __LINE__);
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result = 1;
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}
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else if (fread (buf, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: fread() failed\n", __LINE__);
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result = 1;
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}
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else if (memcmp (buf, outstr, sizeof (outstr) - 1) != 0)
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{
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printf ("%d: content after fseeko(,,SEEK_SET) wrong\n", __LINE__);
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result = 1;
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}
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if (fwrite (outstr, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: write error 2\n", __LINE__);
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result = 1;
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goto out;
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}
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if (fwrite (outstr, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: write error 3\n", __LINE__);
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result = 1;
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goto out;
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}
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if (fwrite (outstr, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: write error 4\n", __LINE__);
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result = 1;
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goto out;
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}
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if (fwrite (outstr, sizeof (outstr) - 1, 1, fp) != 1)
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{
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printf ("%d: write error 5\n", __LINE__);
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result = 1;
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goto out;
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}
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if (fputc ('1', fp) == EOF || fputc ('2', fp) == EOF)
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{
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printf ("%d: cannot add characters at the end\n", __LINE__);
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result = 1;
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goto out;
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}
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/* Check the access time. */
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if (fstat64 (fd, &st1) < 0)
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{
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printf ("%d: fstat64() before fseeko() failed\n\n", __LINE__);
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result = 1;
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}
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else
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{
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sleep (1);
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if (fseek (fp, -(2 + 2 * (sizeof (outstr) - 1)), SEEK_CUR) != 0)
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{
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printf ("%d: fseek() after write characters failed\n", __LINE__);
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result = 1;
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goto out;
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}
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else
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{
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time_t t;
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/* Make sure the timestamp actually can be different. */
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sleep (1);
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t = time (NULL);
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if (fstat64 (fd, &st2) < 0)
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{
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printf ("%d: fstat64() after fseeko() failed\n\n", __LINE__);
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result = 1;
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}
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if (st1.st_ctime >= t)
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{
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printf ("%d: st_ctime not updated\n", __LINE__);
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result = 1;
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}
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if (st1.st_mtime >= t)
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{
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printf ("%d: st_mtime not updated\n", __LINE__);
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result = 1;
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}
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if (st1.st_ctime >= st2.st_ctime)
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{
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printf ("%d: st_ctime not changed\n", __LINE__);
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result = 1;
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}
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if (st1.st_mtime >= st2.st_mtime)
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{
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printf ("%d: st_mtime not changed\n", __LINE__);
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result = 1;
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}
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}
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}
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if (fread (buf, 1, 2 + 2 * (sizeof (outstr) - 1), fp)
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!= 2 + 2 * (sizeof (outstr) - 1))
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{
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printf ("%d: reading 2 records plus bits failed\n", __LINE__);
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result = 1;
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}
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else if (memcmp (buf, outstr, sizeof (outstr) - 1) != 0
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|| memcmp (&buf[sizeof (outstr) - 1], outstr,
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sizeof (outstr) - 1) != 0
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|| buf[2 * (sizeof (outstr) - 1)] != '1'
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|| buf[2 * (sizeof (outstr) - 1) + 1] != '2')
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{
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printf ("%d: reading records failed\n", __LINE__);
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result = 1;
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}
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else if (ungetc ('9', fp) == EOF)
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{
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printf ("%d: ungetc() failed\n", __LINE__);
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result = 1;
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}
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else if (fseek (fp, -(2 + 2 * (sizeof (outstr) - 1)), SEEK_END) != 0)
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{
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printf ("%d: fseek after ungetc failed\n", __LINE__);
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result = 1;
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}
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else if (fread (buf, 1, 2 + 2 * (sizeof (outstr) - 1), fp)
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!= 2 + 2 * (sizeof (outstr) - 1))
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{
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printf ("%d: reading 2 records plus bits failed\n", __LINE__);
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result = 1;
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}
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else if (memcmp (buf, outstr, sizeof (outstr) - 1) != 0
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|| memcmp (&buf[sizeof (outstr) - 1], outstr,
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sizeof (outstr) - 1) != 0
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|| buf[2 * (sizeof (outstr) - 1)] != '1')
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{
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printf ("%d: reading records for the second time failed\n", __LINE__);
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result = 1;
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}
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else if (buf[2 * (sizeof (outstr) - 1) + 1] == '9')
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{
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printf ("%d: unget character not ignored\n", __LINE__);
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result = 1;
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}
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else if (buf[2 * (sizeof (outstr) - 1) + 1] != '2')
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{
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printf ("%d: unget somehow changed character\n", __LINE__);
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result = 1;
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}
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fclose (fp);
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fp = fopen (fname, "r");
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if (fp == NULL)
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{
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printf ("%d: fopen() failed\n\n", __LINE__);
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result = 1;
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}
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else if (fstat64 (fileno (fp), &st1) < 0)
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{
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printf ("%d: fstat64() before fseeko() failed\n\n", __LINE__);
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result = 1;
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}
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else if (fseeko (fp, 0, SEEK_END) != 0)
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{
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printf ("%d: fseeko(fp, 0, SEEK_END) failed\n", __LINE__);
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result = 1;
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}
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else if (ftello (fp) != st1.st_size)
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{
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printf ("%d: fstat64 st_size %zd ftello %zd\n", __LINE__,
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(size_t) st1.st_size, (size_t) ftello (fp));
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result = 1;
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}
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else
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printf ("%d: SEEK_END works\n", __LINE__);
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if (fp != NULL)
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fclose (fp);
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fp = fopen (fname, "r");
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if (fp == NULL)
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{
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printf ("%d: fopen() failed\n\n", __LINE__);
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result = 1;
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}
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else if (fstat64 (fileno (fp), &st1) < 0)
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{
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printf ("%d: fstat64() before fgetc() failed\n\n", __LINE__);
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result = 1;
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}
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else if (fgetc (fp) == EOF)
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{
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printf ("%d: fgetc() before fseeko() failed\n\n", __LINE__);
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result = 1;
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}
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else if (fseeko (fp, 0, SEEK_END) != 0)
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{
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printf ("%d: fseeko(fp, 0, SEEK_END) failed\n", __LINE__);
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result = 1;
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}
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else if (ftello (fp) != st1.st_size)
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{
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printf ("%d: fstat64 st_size %zd ftello %zd\n", __LINE__,
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(size_t) st1.st_size, (size_t) ftello (fp));
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result = 1;
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}
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else
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printf ("%d: SEEK_END works\n", __LINE__);
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if (fp != NULL)
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fclose (fp);
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out:
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unlink (fname);
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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