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Annotation of src/usr.bin/cvs/worklist.c, Revision 1.7

1.7     ! ray         1: /*     $OpenBSD: worklist.c,v 1.6 2007/02/22 06:42:10 otto Exp $       */
1.1       joris       2: /*
                      3:  * Copyright (c) 2006 Joris Vink <joris@openbsd.org>
                      4:  * All rights reserved.
                      5:  *
                      6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
                      9:  *
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. The name of the author may not be used to endorse or promote products
                     13:  *    derived from this software without specific prior written permission.
                     14:  *
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
                     16:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
                     17:  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
                     18:  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
                     19:  * EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLUDING, BUT NOT LIMITED TO,
                     20:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
                     21:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
                     22:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     23:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
                     24:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     25:  */
                     26:
1.6       otto       27: #include <string.h>
                     28: #include <unistd.h>
1.1       joris      29:
1.6       otto       30: #include "cvs.h"
1.1       joris      31:
                     32: /*
1.4       niallo     33:  * adds a path to a worklist.
1.1       joris      34:  */
                     35: void
1.7     ! ray        36: worklist_add(const char *path, struct wklhead *worklist)
1.1       joris      37: {
                     38:        size_t len;
1.7     ! ray        39:        struct worklist *wkl;
1.1       joris      40:        sigset_t old, new;
                     41:
1.5       ray        42:        wkl = xcalloc(1, sizeof(*wkl));
1.1       joris      43:
                     44:        len = strlcpy(wkl->wkl_path, path, sizeof(wkl->wkl_path));
                     45:        if (len >= sizeof(wkl->wkl_path))
1.7     ! ray        46:                fatal("path truncation in worklist_add");
1.1       joris      47:
                     48:        sigfillset(&new);
                     49:        sigprocmask(SIG_BLOCK, &new, &old);
                     50:        SLIST_INSERT_HEAD(worklist, wkl, wkl_list);
                     51:        sigprocmask(SIG_SETMASK, &old, NULL);
                     52: }
                     53:
                     54: /*
                     55:  * run over the given worklist, calling cb for each element.
1.7     ! ray        56:  * this is just like worklist_clean(), except we block signals first.
1.1       joris      57:  */
                     58: void
1.7     ! ray        59: worklist_run(struct wklhead *list, void (*cb)(struct worklist *))
1.1       joris      60: {
                     61:        sigset_t old, new;
1.7     ! ray        62:        struct worklist *wkl;
1.1       joris      63:
                     64:        sigfillset(&new);
                     65:        sigprocmask(SIG_BLOCK, &new, &old);
                     66:
1.7     ! ray        67:        worklist_clean(list, cb);
1.1       joris      68:
1.2       joris      69:        while ((wkl = SLIST_FIRST(list)) != NULL) {
                     70:                SLIST_REMOVE_HEAD(list, wkl_list);
                     71:                xfree(wkl);
                     72:        }
                     73:
1.1       joris      74:        sigprocmask(SIG_SETMASK, &old, NULL);
                     75: }
                     76:
                     77: /*
1.2       joris      78:  * pass elements to the specified callback, which has to be signal safe.
1.1       joris      79:  */
                     80: void
1.7     ! ray        81: worklist_clean(struct wklhead *list, void (*cb)(struct worklist *))
1.1       joris      82: {
1.7     ! ray        83:        struct worklist *wkl;
1.1       joris      84:
1.3       niallo     85:        SLIST_FOREACH(wkl, list, wkl_list)
                     86:            cb(wkl);
1.1       joris      87: }
                     88:
                     89: void
1.7     ! ray        90: worklist_unlink(struct worklist *wkl)
1.1       joris      91: {
                     92:        (void)unlink(wkl->wkl_path);
                     93: }