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/* $OpenBSD: worklist.c,v 1.4 2015/06/13 20:15:21 nicm Exp $ */ |
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/* |
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* Copyright (c) 2006 Joris Vink <joris@openbsd.org> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <sys/queue.h> |
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#include <err.h> |
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#include <signal.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "worklist.h" |
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#include "xmalloc.h" |
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/* |
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* adds a path to a worklist. |
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*/ |
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void |
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worklist_add(const char *path, struct wklhead *worklist) |
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{ |
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size_t len; |
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struct worklist *wkl; |
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sigset_t old, new; |
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wkl = xcalloc(1, sizeof(*wkl)); |
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len = strlcpy(wkl->wkl_path, path, sizeof(wkl->wkl_path)); |
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✗✓ |
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if (len >= sizeof(wkl->wkl_path)) |
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errx(1, "path truncation in worklist_add"); |
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sigfillset(&new); |
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sigprocmask(SIG_BLOCK, &new, &old); |
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SLIST_INSERT_HEAD(worklist, wkl, wkl_list); |
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sigprocmask(SIG_SETMASK, &old, NULL); |
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} |
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/* |
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* run over the given worklist, calling cb for each element. |
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* this is just like worklist_clean(), except we block signals first. |
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*/ |
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void |
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worklist_run(struct wklhead *list, void (*cb)(struct worklist *)) |
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{ |
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sigset_t old, new; |
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struct worklist *wkl; |
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sigfillset(&new); |
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sigprocmask(SIG_BLOCK, &new, &old); |
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worklist_clean(list, cb); |
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✓✓ |
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while ((wkl = SLIST_FIRST(list)) != NULL) { |
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SLIST_REMOVE_HEAD(list, wkl_list); |
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free(wkl); |
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} |
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sigprocmask(SIG_SETMASK, &old, NULL); |
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} |
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/* |
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* pass elements to the specified callback, which has to be signal safe. |
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*/ |
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void |
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worklist_clean(struct wklhead *list, void (*cb)(struct worklist *)) |
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{ |
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struct worklist *wkl; |
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✓✓ |
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SLIST_FOREACH(wkl, list, wkl_list) |
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cb(wkl); |
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} |
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void |
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worklist_unlink(struct worklist *wkl) |
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{ |
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(void)unlink(wkl->wkl_path); |
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} |