/* $OpenBSD: strtofflags.c,v 1.7 2015/08/20 21:49:29 deraadt Exp $ */ /*- * Copyright (c) 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include static const struct { char *name; u_int32_t flag; int invert; } mapping[] = { /* shorter names per flag first, all prefixed by "no" */ { "nosappnd", SF_APPEND, 0 }, { "nosappend", SF_APPEND, 0 }, { "noarch", SF_ARCHIVED, 0 }, { "noarchived", SF_ARCHIVED, 0 }, { "noschg", SF_IMMUTABLE, 0 }, { "noschange", SF_IMMUTABLE, 0 }, { "nosimmutable", SF_IMMUTABLE, 0 }, #ifdef __FreeBSD__ { "nosunlnk", SF_NOUNLINK, 0 }, { "nosunlink", SF_NOUNLINK, 0 }, #endif { "nouappnd", UF_APPEND, 0 }, { "nouappend", UF_APPEND, 0 }, { "nouchg", UF_IMMUTABLE, 0 }, { "nouchange", UF_IMMUTABLE, 0 }, { "nouimmutable", UF_IMMUTABLE, 0 }, { "nodump", UF_NODUMP, 1 }, { "noopaque", UF_OPAQUE, 0 }, #ifdef __FreeBSD__ { "nouunlnk", UF_NOUNLINK, 0 }, { "nouunlink", UF_NOUNLINK, 0 } #endif }; #define longestflaglen 12 #define nmappings (sizeof(mapping) / sizeof(mapping[0])) /* * fflagstostr -- * Convert file flags to a comma-separated string. If no flags * are set, return the empty string. */ char * fflagstostr(u_int32_t flags) { char *string; char *sp, *dp; u_int32_t setflags; int i; if ((string = calloc(nmappings, longestflaglen + 1)) == NULL) return (NULL); setflags = flags; dp = string; for (i = 0; i < nmappings; i++) { if (setflags & mapping[i].flag) { if (dp > string) *dp++ = ','; for (sp = mapping[i].invert ? mapping[i].name : mapping[i].name + 2; *sp; *dp++ = *sp++) ; setflags &= ~mapping[i].flag; } } *dp = '\0'; return (string); } /* * strtofflags -- * Take string of arguments and return file flags. Return 0 on * success, 1 on failure. On failure, stringp is set to point * to the offending token. */ int strtofflags(char **stringp, u_int32_t *setp, u_int32_t *clrp) { char *string, *p; int i; if (setp) *setp = 0; if (clrp) *clrp = 0; string = *stringp; while ((p = strsep(&string, "\t ,")) != NULL) { *stringp = p; if (*p == '\0') continue; for (i = 0; i < nmappings; i++) { if (strcmp(p, mapping[i].name + 2) == 0) { if (mapping[i].invert) { if (clrp) *clrp |= mapping[i].flag; } else { if (setp) *setp |= mapping[i].flag; } break; } else if (strcmp(p, mapping[i].name) == 0) { if (mapping[i].invert) { if (setp) *setp |= mapping[i].flag; } else { if (clrp) *clrp |= mapping[i].flag; } break; } } if (i == nmappings) return 1; } return 0; }