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The tst-glob_lstat_compat test needs to run tests on the previous
version of glob. On alpha, there are three versions of glob, GLIBC_2.0,
GLIBC_2.1 and GLIBC_2.27, while on other architectures there are only
the GLIBC_2.0 and GLIBC_2.27 version. Therefore on alpha the previous
version is GLIBC_2.1 and not GLIBC_2.0.
Changelog:
[BZ #22818]
* posix/tst-glob_lstat_compat.c [__alpha__] (glob): Access
the GLIBC_2.1 version.
(cherry picked from commit f8d7958289
)
269 lines
5.6 KiB
C
269 lines
5.6 KiB
C
/* Test glob compat symbol which avoid call GLOB_ALTDIRFUNC/gl_lstat.
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Copyright (C) 2017-2018 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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<http://www.gnu.org/licenses/>. */
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#include <glob.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <shlib-compat.h>
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#include <support/check.h>
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#include <support/temp_file.h>
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#if TEST_COMPAT (libc, GLIBC_2_0, GLIBC_2_27)
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__typeof (glob) glob;
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/* On alpha glob exists in version GLIBC_2_0, GLIBC_2_1, and GLIBC_2_27.
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This test needs to access the version prior to GLIBC_2_27, which is
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GLIBC_2_1 on alpha, GLIBC_2_0 elsewhere. */
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# ifdef __alpha__
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compat_symbol_reference (libc, glob, glob, GLIBC_2_1);
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# else
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compat_symbol_reference (libc, glob, glob, GLIBC_2_0);
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# endif
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/* Compat glob should not call gl_lstat since for some old binaries it
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might be unitialized (for instance GNUmake). Check if it is indeed
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not called. */
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static bool stat_called;
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static bool lstat_called;
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static struct
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{
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const char *name;
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int level;
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int type;
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} filesystem[] =
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{
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{ ".", 1, DT_DIR },
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{ "..", 1, DT_DIR },
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{ "dir1lev1", 1, DT_UNKNOWN },
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{ ".", 2, DT_DIR },
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{ "..", 2, DT_DIR },
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{ "file1lev2", 2, DT_REG },
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{ "file2lev2", 2, DT_REG },
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};
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static const size_t nfiles = sizeof (filesystem) / sizeof (filesystem [0]);
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typedef struct
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{
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int level;
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int idx;
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struct dirent d;
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char room_for_dirent[NAME_MAX];
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} my_DIR;
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static long int
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find_file (const char *s)
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{
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int level = 1;
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long int idx = 0;
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while (s[0] == '/')
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{
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if (s[1] == '\0')
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{
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s = ".";
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break;
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}
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++s;
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}
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if (strcmp (s, ".") == 0)
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return 0;
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if (s[0] == '.' && s[1] == '/')
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s += 2;
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while (*s != '\0')
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{
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char *endp = strchrnul (s, '/');
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while (idx < nfiles && filesystem[idx].level >= level)
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{
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if (filesystem[idx].level == level
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&& memcmp (s, filesystem[idx].name, endp - s) == 0
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&& filesystem[idx].name[endp - s] == '\0')
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break;
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++idx;
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}
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if (idx == nfiles || filesystem[idx].level < level)
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{
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errno = ENOENT;
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return -1;
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}
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if (*endp == '\0')
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return idx + 1;
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if (filesystem[idx].type != DT_DIR
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&& (idx + 1 >= nfiles
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|| filesystem[idx].level >= filesystem[idx + 1].level))
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{
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errno = ENOTDIR;
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return -1;
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}
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++idx;
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s = endp + 1;
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++level;
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}
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errno = ENOENT;
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return -1;
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}
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static void *
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my_opendir (const char *s)
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{
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long int idx = find_file (s);
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if (idx == -1 || filesystem[idx].type != DT_DIR)
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return NULL;
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my_DIR *dir = malloc (sizeof (my_DIR));
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if (dir == NULL)
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FAIL_EXIT1 ("cannot allocate directory handle");
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dir->level = filesystem[idx].level;
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dir->idx = idx;
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return dir;
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}
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static struct dirent *
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my_readdir (void *gdir)
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{
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my_DIR *dir = gdir;
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if (dir->idx == -1)
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return NULL;
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while (dir->idx < nfiles && filesystem[dir->idx].level > dir->level)
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++dir->idx;
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if (dir->idx == nfiles || filesystem[dir->idx].level < dir->level)
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{
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dir->idx = -1;
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return NULL;
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}
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dir->d.d_ino = 1; /* glob should not skip this entry. */
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dir->d.d_type = filesystem[dir->idx].type;
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strcpy (dir->d.d_name, filesystem[dir->idx].name);
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++dir->idx;
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return &dir->d;
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}
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static void
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my_closedir (void *dir)
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{
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free (dir);
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}
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static int
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my_stat (const char *name, struct stat *st)
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{
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stat_called = true;
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long int idx = find_file (name);
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if (idx == -1)
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return -1;
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memset (st, '\0', sizeof (*st));
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if (filesystem[idx].type == DT_UNKNOWN)
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st->st_mode = DTTOIF (idx + 1 < nfiles
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&& filesystem[idx].level < filesystem[idx + 1].level
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? DT_DIR : DT_REG) | 0777;
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else
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st->st_mode = DTTOIF (filesystem[idx].type) | 0777;
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return 0;
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}
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static int
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my_lstat (const char *name, struct stat *st)
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{
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lstat_called = true;
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long int idx = find_file (name);
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if (idx == -1)
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return -1;
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memset (st, '\0', sizeof (*st));
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if (filesystem[idx].type == DT_UNKNOWN)
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st->st_mode = DTTOIF (idx + 1 < nfiles
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&& filesystem[idx].level < filesystem[idx + 1].level
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? DT_DIR : DT_REG) | 0777;
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else
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st->st_mode = DTTOIF (filesystem[idx].type) | 0777;
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return 0;
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}
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static int
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do_test (void)
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{
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glob_t gl;
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memset (&gl, '\0', sizeof (gl));
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gl.gl_closedir = my_closedir;
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gl.gl_readdir = my_readdir;
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gl.gl_opendir = my_opendir;
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gl.gl_lstat = my_lstat;
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gl.gl_stat = my_stat;
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int flags = GLOB_ALTDIRFUNC;
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stat_called = false;
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lstat_called = false;
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TEST_VERIFY_EXIT (glob ("*/file1lev2", flags, NULL, &gl) == 0);
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TEST_VERIFY_EXIT (gl.gl_pathc == 1);
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TEST_VERIFY_EXIT (strcmp (gl.gl_pathv[0], "dir1lev1/file1lev2") == 0);
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TEST_VERIFY_EXIT (stat_called == true);
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TEST_VERIFY_EXIT (lstat_called == false);
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return 0;
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}
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#else /* TEST_COMPAT (libc, GLIBC_2_0, GLIBC_2_27) */
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static int
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do_test (void)
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{
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return 77;
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}
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#endif
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#include <support/test-driver.c>
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