320e3c42d9
lib/libc/gen/strtofflags.c became const, but gcc did not warn about
assigning its members to non-const pointers. Clang warned about this
with:
lib/libc/gen/strtofflags.c:98:12: error: assigning to 'char *' from 'const char *' discards qualifiers [-Werror,-Wincompatible-pointer-types]
for (sp = mapping[i].invert ? mapping[i].name :
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Reviewed by: jilles
157 lines
4.3 KiB
C
157 lines
4.3 KiB
C
/*-
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* Copyright (c) 1993
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* The Regents of the University of California. 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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* 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. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)stat_flags.c 8.1 (Berkeley) 5/31/93";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stddef.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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#define longestflaglen 12
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static struct {
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char name[longestflaglen + 1];
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char invert;
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u_long flag;
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} const mapping[] = {
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/* shorter names per flag first, all prefixed by "no" */
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{ "nosappnd", 0, SF_APPEND },
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{ "nosappend", 0, SF_APPEND },
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{ "noarch", 0, SF_ARCHIVED },
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{ "noarchived", 0, SF_ARCHIVED },
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{ "noschg", 0, SF_IMMUTABLE },
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{ "noschange", 0, SF_IMMUTABLE },
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{ "nosimmutable", 0, SF_IMMUTABLE },
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{ "nosunlnk", 0, SF_NOUNLINK },
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{ "nosunlink", 0, SF_NOUNLINK },
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#ifdef SF_SNAPSHOT
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{ "nosnapshot", 0, SF_SNAPSHOT },
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#endif
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{ "nouappnd", 0, UF_APPEND },
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{ "nouappend", 0, UF_APPEND },
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{ "nouchg", 0, UF_IMMUTABLE },
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{ "nouchange", 0, UF_IMMUTABLE },
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{ "nouimmutable", 0, UF_IMMUTABLE },
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{ "nodump", 1, UF_NODUMP },
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{ "noopaque", 0, UF_OPAQUE },
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{ "nouunlnk", 0, UF_NOUNLINK },
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{ "nouunlink", 0, UF_NOUNLINK }
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};
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#define nmappings (sizeof(mapping) / sizeof(mapping[0]))
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/*
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* fflagstostr --
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* Convert file flags to a comma-separated string. If no flags
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* are set, return the empty string.
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*/
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char *
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fflagstostr(flags)
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u_long flags;
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{
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char *string;
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const char *sp;
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char *dp;
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u_long setflags;
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int i;
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if ((string = (char *)malloc(nmappings * (longestflaglen + 1))) == NULL)
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return (NULL);
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setflags = flags;
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dp = string;
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for (i = 0; i < nmappings; i++) {
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if (setflags & mapping[i].flag) {
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if (dp > string)
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*dp++ = ',';
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for (sp = mapping[i].invert ? mapping[i].name :
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mapping[i].name + 2; *sp; *dp++ = *sp++) ;
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setflags &= ~mapping[i].flag;
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}
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}
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*dp = '\0';
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return (string);
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}
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/*
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* strtofflags --
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* Take string of arguments and return file flags. Return 0 on
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* success, 1 on failure. On failure, stringp is set to point
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* to the offending token.
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*/
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int
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strtofflags(stringp, setp, clrp)
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char **stringp;
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u_long *setp, *clrp;
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{
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char *string, *p;
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int i;
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if (setp)
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*setp = 0;
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if (clrp)
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*clrp = 0;
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string = *stringp;
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while ((p = strsep(&string, "\t ,")) != NULL) {
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*stringp = p;
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if (*p == '\0')
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continue;
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for (i = 0; i < nmappings; i++) {
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if (strcmp(p, mapping[i].name + 2) == 0) {
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if (mapping[i].invert) {
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if (clrp)
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*clrp |= mapping[i].flag;
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} else {
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if (setp)
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*setp |= mapping[i].flag;
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}
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break;
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} else if (strcmp(p, mapping[i].name) == 0) {
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if (mapping[i].invert) {
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if (setp)
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*setp |= mapping[i].flag;
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} else {
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if (clrp)
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*clrp |= mapping[i].flag;
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}
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break;
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}
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}
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if (i == nmappings)
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return 1;
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}
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return 0;
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}
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