303 lines
6.3 KiB
C
303 lines
6.3 KiB
C
/* Test glob memory management.
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for the filesystem access functions.
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Copyright (C) 2001, 2002, 2004 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 <errno.h>
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#include <error.h>
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#include <dirent.h>
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#include <glob.h>
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#include <mcheck.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/stat.h>
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// #define DEBUG
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#ifdef DEBUG
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# define PRINTF(fmt, args...) \
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do \
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{ \
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int save_errno = errno; \
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printf (fmt, ##args); \
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errno = save_errno; \
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} while (0)
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#else
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# define PRINTF(fmt, args...)
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#endif
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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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mode_t mode;
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} filesystem[] =
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{
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{ ".", 1, DT_DIR, 0755 },
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{ "..", 1, DT_DIR, 0755 },
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{ "dir", 1, DT_DIR, 0755 },
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{ ".", 2, DT_DIR, 0755 },
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{ "..", 2, DT_DIR, 0755 },
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{ "readable", 2, DT_DIR, 0755 },
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{ ".", 3, DT_DIR, 0755 },
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{ "..", 3, DT_DIR, 0755 },
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{ "a", 3, DT_REG, 0644 },
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{ "unreadable", 2, DT_DIR, 0111 },
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{ ".", 3, DT_DIR, 0111 },
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{ "..", 3, DT_DIR, 0755 },
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{ "a", 3, DT_REG, 0644 },
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{ "zz-readable", 2, DT_DIR, 0755 },
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{ ".", 3, DT_DIR, 0755 },
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{ "..", 3, DT_DIR, 0755 },
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{ "a", 3, DT_REG, 0644 }
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};
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#define 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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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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PRINTF ("looking for %.*s, level %d\n", (int) (endp - s), s, level);
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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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my_DIR *dir;
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if (idx == -1)
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{
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PRINTF ("my_opendir(\"%s\") == NULL (%m)\n", s);
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return NULL;
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}
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if ((filesystem[idx].mode & 0400) == 0)
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{
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errno = EACCES;
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PRINTF ("my_opendir(\"%s\") == NULL (%m)\n", s);
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return NULL;
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}
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dir = (my_DIR *) malloc (sizeof (my_DIR));
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if (dir == NULL)
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{
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printf ("cannot allocate directory handle: %m\n");
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exit (EXIT_FAILURE);
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}
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dir->level = filesystem[idx].level;
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dir->idx = idx;
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PRINTF ("my_opendir(\"%s\") == { level: %d, idx: %ld }\n",
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s, filesystem[idx].level, 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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{
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PRINTF ("my_readdir ({ level: %d, idx: %ld }) = NULL\n",
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dir->level, (long int) dir->idx);
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return NULL;
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}
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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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PRINTF ("my_readdir ({ level: %d, idx: %ld }) = NULL\n",
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dir->level, (long int) dir->idx);
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return NULL;
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}
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dir->d.d_ino = dir->idx;
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#ifdef _DIRENT_HAVE_D_TYPE
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dir->d.d_type = filesystem[dir->idx].type;
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#endif
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strcpy (dir->d.d_name, filesystem[dir->idx].name);
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#ifdef _DIRENT_HAVE_D_TYPE
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PRINTF ("my_readdir ({ level: %d, idx: %ld }) = { d_ino: %ld, d_type: %d, d_name: \"%s\" }\n",
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dir->level, (long int) dir->idx, dir->d.d_ino, dir->d.d_type,
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dir->d.d_name);
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#else
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PRINTF ("my_readdir ({ level: %d, idx: %ld }) = { d_ino: %ld, d_name: \"%s\" }\n",
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dir->level, (long int) dir->idx, dir->d.d_ino,
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dir->d.d_name);
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#endif
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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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PRINTF ("my_closedir ()\n");
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free (dir);
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}
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/* We use this function for lstat as well since we don't have any. */
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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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long int idx = find_file (name);
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if (idx == -1)
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{
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PRINTF ("my_stat (\"%s\", ...) = -1 (%m)\n", name);
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return -1;
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}
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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) | filesystem[idx].mode;
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else
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st->st_mode = DTTOIF (filesystem[idx].type) | filesystem[idx].mode;
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PRINTF ("my_stat (\"%s\", { st_mode: %o }) = 0\n", name, st->st_mode);
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return 0;
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}
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static void
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init_glob_altdirfuncs (glob_t *pglob)
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{
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pglob->gl_closedir = my_closedir;
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pglob->gl_readdir = my_readdir;
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pglob->gl_opendir = my_opendir;
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pglob->gl_lstat = my_stat;
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pglob->gl_stat = my_stat;
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}
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int
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do_test (void)
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{
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mtrace ();
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glob_t gl;
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memset (&gl, 0, sizeof (gl));
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init_glob_altdirfuncs (&gl);
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if (glob ("dir/*able/*", GLOB_ERR | GLOB_ALTDIRFUNC, NULL, &gl)
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!= GLOB_ABORTED)
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{
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puts ("glob did not fail with GLOB_ABORTED");
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exit (EXIT_FAILURE);
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}
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globfree (&gl);
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memset (&gl, 0, sizeof (gl));
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init_glob_altdirfuncs (&gl);
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gl.gl_offs = 3;
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if (glob ("dir2/*", GLOB_DOOFFS, NULL, &gl) != GLOB_NOMATCH)
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{
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puts ("glob did not fail with GLOB_NOMATCH");
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exit (EXIT_FAILURE);
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}
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globfree (&gl);
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muntrace ();
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return 0;
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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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