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-rw-r--r--libc/unistd/opendir.c267
1 files changed, 0 insertions, 267 deletions
diff --git a/libc/unistd/opendir.c b/libc/unistd/opendir.c
deleted file mode 100644
index afa3ea0..0000000
--- a/libc/unistd/opendir.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#include <unistd.h>
-#include <dirent.h>
-#include <memory.h>
-#include <string.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <pthread.h>
-#include <errno.h>
-
-struct DIR
-{
- int _DIR_fd;
- size_t _DIR_avail;
- struct dirent* _DIR_next;
- pthread_mutex_t _DIR_lock;
- struct dirent _DIR_buff[15];
-};
-
-int dirfd(DIR* dirp)
-{
- return dirp->_DIR_fd;
-}
-
-DIR* opendir( const char* dirpath )
-{
- DIR* dir = malloc(sizeof(DIR));
-
- if (!dir)
- goto Exit;
-
- dir->_DIR_fd = open(dirpath, O_RDONLY|O_DIRECTORY);
- if (dir->_DIR_fd < 0)
- {
- free(dir);
- dir = NULL;
- }
- else
- {
- dir->_DIR_avail = 0;
- dir->_DIR_next = NULL;
- pthread_mutex_init( &dir->_DIR_lock, NULL );
- }
-Exit:
- return dir;
-}
-
-
-DIR* fdopendir(int fd)
-{
- DIR* dir = malloc(sizeof(DIR));
-
- if (!dir)
- return 0;
-
- dir->_DIR_fd = fd;
- dir->_DIR_avail = 0;
- dir->_DIR_next = NULL;
- pthread_mutex_init( &dir->_DIR_lock, NULL );
-
- return dir;
-}
-
-
-static struct dirent*
-_readdir_unlocked(DIR* dir)
-{
- struct dirent* entry;
-
- if ( !dir->_DIR_avail )
- {
- int rc;
-
- for (;;) {
- rc = getdents( dir->_DIR_fd, dir->_DIR_buff, sizeof(dir->_DIR_buff));
- if (rc >= 0 || errno != EINTR)
- break;
- }
- if (rc <= 0)
- return NULL;
-
- dir->_DIR_avail = rc;
- dir->_DIR_next = dir->_DIR_buff;
- }
-
- entry = dir->_DIR_next;
-
- /* perform some sanity checks here */
- if (((long)(void*)entry & 3) != 0)
- return NULL;
-
- if ( (unsigned)entry->d_reclen > sizeof(*entry) ||
- entry->d_reclen <= offsetof(struct dirent, d_name) )
- goto Bad;
-
- if ( (char*)entry + entry->d_reclen > (char*)dir->_DIR_buff + sizeof(dir->_DIR_buff) )
- goto Bad;
-
- if ( !memchr( entry->d_name, 0, entry->d_reclen - offsetof(struct dirent, d_name)) )
- goto Bad;
-
- dir->_DIR_next = (struct dirent*)((char*)entry + entry->d_reclen);
- dir->_DIR_avail -= entry->d_reclen;
-
- return entry;
-
- Bad:
- errno = EINVAL;
- return NULL;
-}
-
-
-struct dirent*
-readdir(DIR * dir)
-{
- struct dirent *entry = NULL;
-
- pthread_mutex_lock( &dir->_DIR_lock );
- entry = _readdir_unlocked(dir);
- pthread_mutex_unlock( &dir->_DIR_lock );
-
- return entry;
-}
-
-
-int readdir_r(DIR* dir, struct dirent *entry, struct dirent **result)
-{
- struct dirent* ent;
- int save_errno = errno;
- int retval;
-
- *result = NULL;
- errno = 0;
-
- pthread_mutex_lock( &dir->_DIR_lock );
-
- ent = _readdir_unlocked(dir);
- retval = errno;
- if (ent == NULL) {
- if (!retval) {
- errno = save_errno;
- }
- } else {
- if (!retval) {
- errno = save_errno;
- *result = entry;
- memcpy( entry, ent, ent->d_reclen );
- }
- }
-
- pthread_mutex_unlock( &dir->_DIR_lock );
-
- return retval;
-}
-
-
-
-int closedir(DIR *dir)
-{
- int rc;
-
- rc = close(dir->_DIR_fd);
- dir->_DIR_fd = -1;
-
- pthread_mutex_destroy( &dir->_DIR_lock );
-
- free(dir);
- return rc;
-}
-
-
-void rewinddir(DIR *dir)
-{
- pthread_mutex_lock( &dir->_DIR_lock );
- lseek( dir->_DIR_fd, 0, SEEK_SET );
- dir->_DIR_avail = 0;
- pthread_mutex_unlock( &dir->_DIR_lock );
-}
-
-
-int alphasort(const void *a, const void *b)
-{
- struct dirent **d1, **d2;
-
- d1 = (struct dirent **) a;
- d2 = (struct dirent **) b;
- return strcmp((*d1)->d_name, (*d2)->d_name);
-}
-
-
-int scandir(const char *dir, struct dirent ***namelist,
- int(*filter)(const struct dirent *),
- int(*compar)(const struct dirent **, const struct dirent **))
-{
- DIR *d;
- int n_elem = 0;
- struct dirent *this_de, *de;
- struct dirent **de_list = NULL;
- int de_list_size = 0;
-
- d = opendir(dir);
- if (d == NULL) {
- return -1;
- }
-
- while ((this_de = readdir(d)) != NULL) {
- if (filter && (*filter)(this_de) == 0) {
- continue;
- }
- if (n_elem == 0) {
- de_list_size = 4;
- de_list = (struct dirent **)
- malloc(sizeof(struct dirent *)*de_list_size);
- if (de_list == NULL) {
- return -1;
- }
- }
- else if (n_elem == de_list_size) {
- struct dirent **de_list_new;
-
- de_list_size += 10;
- de_list_new = (struct dirent **)
- realloc(de_list, sizeof(struct dirent *)*de_list_size);
- if (de_list_new == NULL) {
- free(de_list);
- return -1;
- }
- de_list = de_list_new;
- }
- de = (struct dirent *) malloc(sizeof(struct dirent));
- *de = *this_de;
- de_list[n_elem++] = de;
- }
- closedir(d);
- if (n_elem && compar) {
- qsort(de_list, n_elem, sizeof(struct dirent *),
- (int (*)(const void *, const void *)) compar);
- }
- *namelist = de_list;
- return n_elem;
-}
generated by cgit v1.1 at 2024-12-23 00:03:15 +0000