diff options
Diffstat (limited to 'src/hard_link_stack.c')
| -rw-r--r-- | src/hard_link_stack.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/hard_link_stack.c b/src/hard_link_stack.c new file mode 100644 index 0000000..85af300 --- /dev/null +++ b/src/hard_link_stack.c @@ -0,0 +1,132 @@ +/*************************************************************************** + * Copyright (C) 2010 by Roberto Maar * + * robi@users.berlios.de * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program 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 General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + +//construct for global collect of hardlinks + +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> + +#include "hard_link_stack.h" + +static struct link_stack_head head; + +void init_link_stack(){ + head.count = 0; + head.begin = NULL; + head.pointer = NULL; +} + + +void add_link_stack(ext2_ino_t inode_nr, __u32 link_count, char* name, __u32 generation){ + struct link_entry* this; + + this = malloc (sizeof(struct link_entry)); + if (!this) + goto errout; + this->inode_nr = inode_nr; + this->link_count = link_count -1 ; + this->name = malloc(strlen(name) +1); + this->generation = generation; + if (!this->name) + goto errout; + strcpy(this->name,name); + this->next = head.begin; + head.begin = this; + head.count++; +return; + +errout: + if(this->name) + free(this->name); + if(this) + free(this); +} + + +char* check_link_stack(ext2_ino_t inode_nr, __u32 generation){ + + head.pointer = head.begin; + while (head.pointer) { + if((head.pointer->inode_nr == inode_nr) && (head.pointer->generation == generation)) + break; + head.pointer = head.pointer->next; + } + return (head.pointer) ? head.pointer->name : NULL ; +} + + +static void del_link_stack(struct link_entry* entry){ + if(entry->name) + free(entry->name); + head.pointer = head.begin; + if (head.begin->next){ + while ((head.pointer->next) && (head.pointer != entry) && (head.pointer->next != entry)) + head.pointer = head.pointer->next; + if(head.begin == entry) + head.begin = entry->next; + else + head.pointer->next = entry->next; + } + else + head.begin = NULL; + free(entry); + head.count--; +} + + +int match_link_stack(ext2_ino_t inode_nr, __u32 generation){ + int retval = 1; + if ((head.pointer->inode_nr == inode_nr) && (head.pointer->generation == generation)){ +// if (! --(head.pointer->link_count)) +// del_link_stack(head.pointer); + (head.pointer->link_count)-- ; + retval = 0; + } +return retval; +} + + +void clear_link_stack(){ + int d_count = 0 ; + + fflush(stdout); + if (head.count){ + fprintf(stderr,"Hardlink Database\n", head.count); + + head.pointer = head.begin; + while (head.pointer){ + if(head.pointer->link_count){ + fprintf(stderr,"%10d\t%s\n",head.pointer->link_count,head.pointer->name); + d_count++ ; + } + if(head.pointer->name) + free(head.pointer->name); + head.begin = head.pointer->next; + free(head.pointer); + head.pointer = head.begin; + } + if (! d_count) + fprintf(stderr,"all Hardlinks be resolved\n"); + } +} + + +
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