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glibc/posix/bug-glob2.c
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/* Test glob memory management. | |
for the filesystem access functions. | |
Copyright (C) 2001-2016 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/>. */ | |
#include <errno.h> | |
#include <error.h> | |
#include <dirent.h> | |
#include <glob.h> | |
#include <mcheck.h> | |
#include <stdlib.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <sys/stat.h> | |
// #define DEBUG | |
#ifdef DEBUG | |
# define PRINTF(fmt, args...) \ | |
do \ | |
{ \ | |
int save_errno = errno; \ | |
printf (fmt, ##args); \ | |
errno = save_errno; \ | |
} while (0) | |
#else | |
# define PRINTF(fmt, args...) | |
#endif | |
static struct | |
{ | |
const char *name; | |
int level; | |
int type; | |
mode_t mode; | |
} filesystem[] = | |
{ | |
{ ".", 1, DT_DIR, 0755 }, | |
{ "..", 1, DT_DIR, 0755 }, | |
{ "dir", 1, DT_DIR, 0755 }, | |
{ ".", 2, DT_DIR, 0755 }, | |
{ "..", 2, DT_DIR, 0755 }, | |
{ "readable", 2, DT_DIR, 0755 }, | |
{ ".", 3, DT_DIR, 0755 }, | |
{ "..", 3, DT_DIR, 0755 }, | |
{ "a", 3, DT_REG, 0644 }, | |
{ "unreadable", 2, DT_DIR, 0111 }, | |
{ ".", 3, DT_DIR, 0111 }, | |
{ "..", 3, DT_DIR, 0755 }, | |
{ "a", 3, DT_REG, 0644 }, | |
{ "zz-readable", 2, DT_DIR, 0755 }, | |
{ ".", 3, DT_DIR, 0755 }, | |
{ "..", 3, DT_DIR, 0755 }, | |
{ "a", 3, DT_REG, 0644 } | |
}; | |
#define nfiles (sizeof (filesystem) / sizeof (filesystem[0])) | |
typedef struct | |
{ | |
int level; | |
int idx; | |
struct dirent d; | |
char room_for_dirent[NAME_MAX]; | |
} my_DIR; | |
static long int | |
find_file (const char *s) | |
{ | |
int level = 1; | |
long int idx = 0; | |
if (strcmp (s, ".") == 0) | |
return 0; | |
if (s[0] == '.' && s[1] == '/') | |
s += 2; | |
while (*s != '\0') | |
{ | |
char *endp = strchrnul (s, '/'); | |
PRINTF ("looking for %.*s, level %d\n", (int) (endp - s), s, level); | |
while (idx < nfiles && filesystem[idx].level >= level) | |
{ | |
if (filesystem[idx].level == level | |
&& memcmp (s, filesystem[idx].name, endp - s) == 0 | |
&& filesystem[idx].name[endp - s] == '\0') | |
break; | |
++idx; | |
} | |
if (idx == nfiles || filesystem[idx].level < level) | |
{ | |
errno = ENOENT; | |
return -1; | |
} | |
if (*endp == '\0') | |
return idx + 1; | |
if (filesystem[idx].type != DT_DIR | |
&& (idx + 1 >= nfiles | |
|| filesystem[idx].level >= filesystem[idx + 1].level)) | |
{ | |
errno = ENOTDIR; | |
return -1; | |
} | |
++idx; | |
s = endp + 1; | |
++level; | |
} | |
errno = ENOENT; | |
return -1; | |
} | |
static void * | |
my_opendir (const char *s) | |
{ | |
long int idx = find_file (s); | |
my_DIR *dir; | |
if (idx == -1) | |
{ | |
PRINTF ("my_opendir(\"%s\") == NULL (%m)\n", s); | |
return NULL; | |
} | |
if ((filesystem[idx].mode & 0400) == 0) | |
{ | |
errno = EACCES; | |
PRINTF ("my_opendir(\"%s\") == NULL (%m)\n", s); | |
return NULL; | |
} | |
dir = (my_DIR *) malloc (sizeof (my_DIR)); | |
if (dir == NULL) | |
{ | |
printf ("cannot allocate directory handle: %m\n"); | |
exit (EXIT_FAILURE); | |
} | |
dir->level = filesystem[idx].level; | |
dir->idx = idx; | |
PRINTF ("my_opendir(\"%s\") == { level: %d, idx: %ld }\n", | |
s, filesystem[idx].level, idx); | |
return dir; | |
} | |
static struct dirent * | |
my_readdir (void *gdir) | |
{ | |
my_DIR *dir = gdir; | |
if (dir->idx == -1) | |
{ | |
PRINTF ("my_readdir ({ level: %d, idx: %ld }) = NULL\n", | |
dir->level, (long int) dir->idx); | |
return NULL; | |
} | |
while (dir->idx < nfiles && filesystem[dir->idx].level > dir->level) | |
++dir->idx; | |
if (dir->idx == nfiles || filesystem[dir->idx].level < dir->level) | |
{ | |
dir->idx = -1; | |
PRINTF ("my_readdir ({ level: %d, idx: %ld }) = NULL\n", | |
dir->level, (long int) dir->idx); | |
return NULL; | |
} | |
dir->d.d_ino = dir->idx; | |
#ifdef _DIRENT_HAVE_D_TYPE | |
dir->d.d_type = filesystem[dir->idx].type; | |
#endif | |
strcpy (dir->d.d_name, filesystem[dir->idx].name); | |
#ifdef _DIRENT_HAVE_D_TYPE | |
PRINTF ("my_readdir ({ level: %d, idx: %ld }) = { d_ino: %ld, d_type: %d, d_name: \"%s\" }\n", | |
dir->level, (long int) dir->idx, dir->d.d_ino, dir->d.d_type, | |
dir->d.d_name); | |
#else | |
PRINTF ("my_readdir ({ level: %d, idx: %ld }) = { d_ino: %ld, d_name: \"%s\" }\n", | |
dir->level, (long int) dir->idx, dir->d.d_ino, | |
dir->d.d_name); | |
#endif | |
++dir->idx; | |
return &dir->d; | |
} | |
static void | |
my_closedir (void *dir) | |
{ | |
PRINTF ("my_closedir ()\n"); | |
free (dir); | |
} | |
/* We use this function for lstat as well since we don't have any. */ | |
static int | |
my_stat (const char *name, struct stat *st) | |
{ | |
long int idx = find_file (name); | |
if (idx == -1) | |
{ | |
PRINTF ("my_stat (\"%s\", ...) = -1 (%m)\n", name); | |
return -1; | |
} | |
memset (st, '\0', sizeof (*st)); | |
if (filesystem[idx].type == DT_UNKNOWN) | |
st->st_mode = DTTOIF (idx + 1 < nfiles | |
&& filesystem[idx].level < filesystem[idx + 1].level | |
? DT_DIR : DT_REG) | filesystem[idx].mode; | |
else | |
st->st_mode = DTTOIF (filesystem[idx].type) | filesystem[idx].mode; | |
PRINTF ("my_stat (\"%s\", { st_mode: %o }) = 0\n", name, st->st_mode); | |
return 0; | |
} | |
static void | |
init_glob_altdirfuncs (glob_t *pglob) | |
{ | |
pglob->gl_closedir = my_closedir; | |
pglob->gl_readdir = my_readdir; | |
pglob->gl_opendir = my_opendir; | |
pglob->gl_lstat = my_stat; | |
pglob->gl_stat = my_stat; | |
} | |
int | |
do_test (void) | |
{ | |
mtrace (); | |
glob_t gl; | |
memset (&gl, 0, sizeof (gl)); | |
init_glob_altdirfuncs (&gl); | |
if (glob ("dir/*able/*", GLOB_ERR | GLOB_ALTDIRFUNC, NULL, &gl) | |
!= GLOB_ABORTED) | |
{ | |
puts ("glob did not fail with GLOB_ABORTED"); | |
exit (EXIT_FAILURE); | |
} | |
globfree (&gl); | |
memset (&gl, 0, sizeof (gl)); | |
init_glob_altdirfuncs (&gl); | |
gl.gl_offs = 3; | |
if (glob ("dir2/*", GLOB_DOOFFS, NULL, &gl) != GLOB_NOMATCH) | |
{ | |
puts ("glob did not fail with GLOB_NOMATCH"); | |
exit (EXIT_FAILURE); | |
} | |
globfree (&gl); | |
muntrace (); | |
return 0; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |