freebsd-dev/lib/libc/gen/strtofflags.c
Craig Rodrigues e263ec16a9 Use unsigned variables in a few places.
Eliminates gcc 4.9 warnings.
2015-09-14 18:59:01 +00:00

170 lines
4.8 KiB
C

/*-
* 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.
* 4. 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.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)stat_flags.c 8.1 (Berkeley) 5/31/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/stat.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define longestflaglen 12
static struct {
char name[longestflaglen + 1];
char invert;
u_long flag;
} const mapping[] = {
/* shorter names per flag first, all prefixed by "no" */
{ "nosappnd", 0, SF_APPEND },
{ "nosappend", 0, SF_APPEND },
{ "noarch", 0, SF_ARCHIVED },
{ "noarchived", 0, SF_ARCHIVED },
{ "noschg", 0, SF_IMMUTABLE },
{ "noschange", 0, SF_IMMUTABLE },
{ "nosimmutable", 0, SF_IMMUTABLE },
{ "nosunlnk", 0, SF_NOUNLINK },
{ "nosunlink", 0, SF_NOUNLINK },
#ifdef SF_SNAPSHOT
{ "nosnapshot", 0, SF_SNAPSHOT },
#endif
{ "nouappnd", 0, UF_APPEND },
{ "nouappend", 0, UF_APPEND },
{ "nouarch", 0, UF_ARCHIVE },
{ "nouarchive", 0, UF_ARCHIVE },
{ "nohidden", 0, UF_HIDDEN },
{ "nouhidden", 0, UF_HIDDEN },
{ "nouchg", 0, UF_IMMUTABLE },
{ "nouchange", 0, UF_IMMUTABLE },
{ "nouimmutable", 0, UF_IMMUTABLE },
{ "nodump", 1, UF_NODUMP },
{ "nouunlnk", 0, UF_NOUNLINK },
{ "nouunlink", 0, UF_NOUNLINK },
{ "nooffline", 0, UF_OFFLINE },
{ "nouoffline", 0, UF_OFFLINE },
{ "noopaque", 0, UF_OPAQUE },
{ "nordonly", 0, UF_READONLY },
{ "nourdonly", 0, UF_READONLY },
{ "noreadonly", 0, UF_READONLY },
{ "noureadonly", 0, UF_READONLY },
{ "noreparse", 0, UF_REPARSE },
{ "noureparse", 0, UF_REPARSE },
{ "nosparse", 0, UF_SPARSE },
{ "nousparse", 0, UF_SPARSE },
{ "nosystem", 0, UF_SYSTEM },
{ "nousystem", 0, UF_SYSTEM }
};
#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_long flags)
{
char *string;
const char *sp;
char *dp;
u_long setflags;
u_int i;
if ((string = (char *)malloc(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_long *setp, u_long *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;
}