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File: [cvs.NetBSD.org] / src / lib / libutil / stat_flags.c (download)

Revision 1.2, Tue Jan 16 17:34:02 2007 UTC (13 years, 2 months ago) by cbiere
Branch: MAIN
CVS Tags: yamt-pf42-baseX, yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pf42-base, yamt-pf42, yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-revivesa, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, netbsd-5-base, netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, netbsd-5, mjf-devfs2-base, mjf-devfs2, matt-premerge-20091211, matt-nb8-mediatek-base, matt-nb8-mediatek, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb5-mips64, matt-nb4-mips64-k7-u2a-k9b, matt-mips64-premerge-20101231, matt-mips64-base2, matt-mips64-base, matt-mips64, matt-armv6-prevmlocking, matt-armv6-nbase, matt-armv6-base, matt-armv6, localcount-20160914, keiichi-mipv6-base, keiichi-mipv6, jym-xensuspend-nbase, jym-xensuspend-base, jym-xensuspend, hpcarm-cleanup-nbase, hpcarm-cleanup-base, hpcarm-cleanup, cube-autoconf-base, cube-autoconf, christos-time_t-base, christos-time_t, cherry-xenmp-base, cherry-xenmp, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2, agc-symver-base, agc-symver, HEAD
Changes since 1.1: +4 -8 lines

Fixed string truncation bug in flags_to_string(): SAPPEND() uses
sizeof(string) but string is a pointer to a malloc()ed buffer.

/*	$NetBSD: stat_flags.c,v 1.2 2007/01/16 17:34:02 cbiere 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.
 */

#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#else
#define HAVE_STRUCT_STAT_ST_FLAGS 1
#endif

#include <sys/cdefs.h>
#if !defined(lint)
#if 0
static char sccsid[] = "@(#)stat_flags.c	8.2 (Berkeley) 7/28/94";
#else
__RCSID("$NetBSD: stat_flags.c,v 1.2 2007/01/16 17:34:02 cbiere Exp $");
#endif
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <fts.h>
#include <stddef.h>
#include <string.h>
#include <stdlib.h>

#include "util.h"

#define	SAPPEND(s) do {							\
	if (prefix != NULL)						\
		(void)strlcat(string, prefix, sizeof(string));		\
	(void)strlcat(string, s, sizeof(string));			\
	prefix = ",";							\
} while (/* CONSTCOND */ 0)

/*
 * flags_to_string --
 *	Convert stat flags to a comma-separated string.  If no flags
 *	are set, return the default string.
 */
char *
flags_to_string(u_long flags, const char *def)
{
	char string[128];
	const char *prefix;

	string[0] = '\0';
	prefix = NULL;
#if HAVE_STRUCT_STAT_ST_FLAGS
	if (flags & UF_APPEND)
		SAPPEND("uappnd");
	if (flags & UF_IMMUTABLE)
		SAPPEND("uchg");
	if (flags & UF_NODUMP)
		SAPPEND("nodump");
	if (flags & UF_OPAQUE)
		SAPPEND("opaque");
	if (flags & SF_APPEND)
		SAPPEND("sappnd");
	if (flags & SF_ARCHIVED)
		SAPPEND("arch");
	if (flags & SF_IMMUTABLE)
		SAPPEND("schg");
#ifdef SF_SNAPSHOT
	if (flags & SF_SNAPSHOT)
		SAPPEND("snap");
#endif
#endif
	if (prefix != NULL)
		return strdup(string);
	return strdup(def);
}

#define	TEST(a, b, f) {							\
	if (!strcmp(a, b)) {						\
		if (clear) {						\
			if (clrp)					\
				*clrp |= (f);				\
			if (setp)					\
				*setp &= ~(f);				\
		} else {						\
			if (setp)					\
				*setp |= (f);				\
			if (clrp)					\
				*clrp &= ~(f);				\
		}							\
		break;							\
	}								\
}

/*
 * string_to_flags --
 *	Take string of arguments and return stat flags.  Return 0 on
 *	success, 1 on failure.  On failure, stringp is set to point
 *	to the offending token.
 */
int
string_to_flags(char **stringp, u_long *setp, u_long *clrp)
{
	int clear;
	char *string, *p;

	if (setp)
		*setp = 0;
	if (clrp)
		*clrp = 0;

#if HAVE_STRUCT_STAT_ST_FLAGS
	string = *stringp;
	while ((p = strsep(&string, "\t ,")) != NULL) {
		clear = 0;
		*stringp = p;
		if (*p == '\0')
			continue;
		if (p[0] == 'n' && p[1] == 'o') {
			clear = 1;
			p += 2;
		}
		switch (p[0]) {
		case 'a':
			TEST(p, "arch", SF_ARCHIVED);
			TEST(p, "archived", SF_ARCHIVED);
			return (1);
		case 'd':
			clear = !clear;
			TEST(p, "dump", UF_NODUMP);
			return (1);
		case 'n':
				/*
				 * Support `nonodump'. Note that
				 * the state of clear is not changed.
				 */
			TEST(p, "nodump", UF_NODUMP);
			return (1);
		case 'o':
			TEST(p, "opaque", UF_OPAQUE);
			return (1);
		case 's':
			TEST(p, "sappnd", SF_APPEND);
			TEST(p, "sappend", SF_APPEND);
			TEST(p, "schg", SF_IMMUTABLE);
			TEST(p, "schange", SF_IMMUTABLE);
			TEST(p, "simmutable", SF_IMMUTABLE);
			return (1);
		case 'u':
			TEST(p, "uappnd", UF_APPEND);
			TEST(p, "uappend", UF_APPEND);
			TEST(p, "uchg", UF_IMMUTABLE);
			TEST(p, "uchange", UF_IMMUTABLE);
			TEST(p, "uimmutable", UF_IMMUTABLE);
			return (1);
		default:
			return (1);
		}
	}
#endif

	return (0);
}