88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
/* _,.---._ .-._ .--.-. ,--.--------.
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* _,..---._ ,-.' , - `. /==/ \ .-._/==/ //==/, - , -\
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* /==/, - \ /==/_, , - \|==|, \/ /, |==\ -\\==\.-. - ,-./
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* |==| _ _\==| .=. |==|- \| | \==\- \`--`\==\- \
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* |==| .=. |==|_ : ;=: - |==| , | -| `--`-' \==\_ \
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* |==|,| | -|==| , '=' |==| - _ | |==|- |
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* |==| '=' /\==\ - ,_ /|==| /\ , | |==|, |
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* |==|-, _`/ '.='. - .' /==/, | |- | /==/ -/
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* `-.`.____.' `--`--'' `--`./ `--` `--`--`
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* _ __ ,---. .-._ .=-.-. _,.----.
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* .-`.' ,`..--.' \ /==/ \ .-._ /==/_ /.' .' - \
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* /==/, - \==\-/\ \ |==|, \/ /, /==|, |/==/ , ,-'
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* |==| _ .=. /==/-|_\ | |==|- \| ||==| ||==|- | .
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* |==| , '=',\==\, - \ |==| , | -||==|- ||==|_ `-' \
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* |==|- '..'/==/ - ,| |==| - _ ||==| ,||==| _ , |
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* |==|, | /==/- /\ - \|==| /\ , ||==|- |\==\. /
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* /==/ - | \==\ _.\=\.-'/==/, | |- |/==/. / `-.`.___.-'
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* `--`---' `--` `--`./ `--``--`-`
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*
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* @(#)Copyright (c) 2023, Nathan D. Fisher.
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*
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* This is free software. It comes with NO WARRANTY.
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* Permission to use, modify and distribute this source code
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* is granted subject to the following conditions.
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* 1/ that the above copyright notice and this notice
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* are preserved in all copies and that due credit be given
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* to the author.
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* 2/ that any changes to this code are clearly commented
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* as such so that the author does not get blamed for bugs
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* other than his own.
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*/
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#include "linklist.h"
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#include <pthread.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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int haggis_linklist_push(haggis_hardlink_list *list, haggis_hardlink *link) {
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pthread_mutex_lock(list->mutex);
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link->next = list->head;
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list->head = link;
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return pthread_mutex_unlock(list->mutex);
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}
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haggis_hardlink* haggis_linklist_get(haggis_hardlink_list *list, ino_t inode) {
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haggis_hardlink *link;
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pthread_mutex_lock(list->mutex);
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link = list->head;
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while(link != NULL) {
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if (link->inode == inode) {
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return link;
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}
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link = link->next;
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}
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pthread_mutex_unlock(list->mutex);
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return NULL;
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}
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char* haggis_linklist_get_or_put(haggis_hardlink_list *list, ino_t inode, char *fname) {
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haggis_hardlink *link;
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link = haggis_linklist_get(list, inode);
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if (link == NULL) {
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link = malloc(sizeof(haggis_hardlink));
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if (link == NULL) return NULL;
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link->inode = inode;
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link->next = NULL;
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haggis_linklist_push(list, link);
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} else {
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return link->fname;
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}
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return NULL;
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}
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void haggis_linklist_drain(haggis_hardlink_list *list) {
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haggis_hardlink *link;
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haggis_hardlink *next;
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pthread_mutex_lock(list->mutex);
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link = list->head;
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while (link != NULL) {
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next = link->next;
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free(link);
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link = next;
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}
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pthread_mutex_unlock(list->mutex);
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}
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