/* Scan /proc/devices for a blockdevice (BLOCKDEV is 1) or a character
* device (BLOCKDEV is 0) with a major number matching the major number of DEV.
* When there is a match, store entry data in ENTRY and return 0. Return
* non-zero otherwise. */
int
proc_dev_get_entry(dev_t device, int blockdev, struct proc_dev_entry* entry)
{
struct file_buffer file;
int rc;
int scan_blockdev = 0;
rc = get_file_buffer(&file, proc_dev_filename);
if (rc)
return rc;
rc = -1;
while (!eof(&file)) {
if (scan_string(&file, "Block") == 0) {
skip_line(&file);
scan_blockdev = 1;
continue;
} else if (scan_dev_entry(&file, entry, scan_blockdev) == 0) {
if ((major(entry->device) == major(device)) &&
blockdev == scan_blockdev) {
rc = 0;
break;
}
proc_dev_free_entry(entry);
} else
skip_line(&file);
}
free_file_buffer(&file);
return rc;
}
/* Scan /proc/partitions for an entry matching DEVICE. When there is a match,
* store entry data in ENTRY and return 0. Return non-zero otherwise. */
int
proc_part_get_entry(dev_t device, struct proc_part_entry* entry)
{
struct file_buffer file;
int rc;
rc = get_file_buffer(&file, proc_part_filename);
if (rc)
return rc;
rc = -1;
while (!eof(&file)) {
if (scan_part_entry(&file, entry) == 0) {
if (entry->device == device) {
rc = 0;
break;
}
proc_part_free_entry(entry);
} else
skip_line(&file);
}
free_file_buffer(&file);
return rc;
}
static int create_files(char *dir_name, int inode)
{
DIR *dir;
struct dirent *pdir;
struct file_buffer *bdir;
struct file_buffer *bfile;
char *name;
char *tmp;
int len = 0;
int file;
int ret = 0;
int finode = 0;
dir = opendir(dir_name);
if (dir == NULL) {
printf("Can not open dir %s\n", dir_name);
return -EACCES;
}
bdir = allocate_file_buffer();
if (!bdir) {
ret = -ENOMEM;
goto close_dir;
}
init_file_buffer(bdir, DT_DIR);
bdir->inode = inode;
bfile = allocate_file_buffer();
if (!bdir) {
ret = -ENOMEM;
goto release_bdir;
}
name = malloc(1024);
if (!name) {
ret = -ENOMEM;
goto release_bfile;
}
memset(name, 0, 1024);
init_inode_entry(bdir, inode, DT_DIR);
while (pdir = readdir(dir)) {
if (!strcmp(pdir->d_name, "."))
continue;
if(!strcmp(pdir->d_name, ".."))
continue;
finode = pop_inode();
if (!finode)
goto release_bfile;
strcpy(name, dir_name);
len = strlen(name);
if (name[len - 1] != '/')
strcat(name, "/");
strcat(name, pdir->d_name);
printf("Add file [ %s ] to disk\n", name);
if (pdir->d_type == DT_DIR) {
write_entry_to_dir(bdir, pdir->d_name, finode, DT_DIR);
create_files(name, finode);
} else {
write_entry_to_dir(bdir, pdir->d_name, finode, DT_BLK);
init_file_buffer(bfile, TYPE_FILE);
bfile->inode = finode;
init_inode_entry(bfile, finode, DT_BLK);
file = open(name, O_RDONLY);
if(file < 0) {
printf("can not open file %s\n", name);
continue;
}
write_file(file, bfile);
}
}
write_inode(bdir);
release_file_name_buffer:
free(name);
release_bdir:
free_file_buffer(bfile);
release_bfile:
free_file_buffer(bdir);
close_dir:
closedir(dir);
return ret;
}