usr/src/usr.sbin/mtree/compare.c

/*-
 * Copyright (c) 1989 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 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.
 */

#ifndef lint
static char sccsid[] = "@(#)compare.c   5.7 (Berkeley) 5/25/90";
#endif /* not lint */

#include <sys/param.h>
#include <sys/stat.h>
#include <fts.h>
#include <errno.h>
#include <stdio.h>
#include <time.h>
#include "mtree.h"

#define LABEL \
        if (!label++) \
                (void)printf("%s: ", RP(p)); \

compare(name, s, p)
        char *name;
        register NODE *s;
        register FTSENT *p;
{
        extern int exitval, uflag;
        int label;
        char *ftype(), *inotype(), *rlink();

        label = 0;
        switch(s->type) {
        case F_BLOCK:
                if (!S_ISBLK(p->fts_statb.st_mode))
                        goto typeerr;
                break;
        case F_CHAR:
                if (!S_ISCHR(p->fts_statb.st_mode))
                        goto typeerr;
                break;
        case F_DIR:
                if (!S_ISDIR(p->fts_statb.st_mode))
                        goto typeerr;
                break;
        case F_FIFO:
                if (!S_ISFIFO(p->fts_statb.st_mode))
                        goto typeerr;
                break;
        case F_FILE:
                if (!S_ISREG(p->fts_statb.st_mode))
                        goto typeerr;
                break;
        case F_LINK:
                if (!S_ISLNK(p->fts_statb.st_mode))
                        goto typeerr;
                break;
        case F_SOCK:
                if (!S_ISFIFO(p->fts_statb.st_mode)) {
typeerr:                LABEL;
                        (void)printf("\n\ttype (%s, %s)",
                            ftype(s->type), inotype(p->fts_statb.st_mode));
                }
                break;
        }
        if (s->flags & F_MODE && s->st_mode != (p->fts_statb.st_mode & MBITS)) {
                LABEL;
                (void)printf("\n\tpermissions (%#o, %#o%s",
                    s->st_mode, p->fts_statb.st_mode & MBITS, uflag ? "" : ")");
                if (uflag)
                        if (chmod(p->fts_accpath, s->st_mode))
                                (void)printf(", not modified: %s)",
                                    strerror(errno));
                        else
                                (void)printf(", modified)");
        }
        if (s->flags & F_OWNER && s->st_uid != p->fts_statb.st_uid) {
                LABEL;
                (void)printf("\n\towner (%u, %u%s",
                    s->st_uid, p->fts_statb.st_uid, uflag ? "" : ")");
                if (uflag)
                        if (chown(p->fts_accpath, s->st_uid, -1))
                                (void)printf(", not modified: %s)",
                                    strerror(errno));
                        else
                                (void)printf(", modified)");
        }
        if (s->flags & F_GROUP && s->st_gid != p->fts_statb.st_gid) {
                LABEL;
                (void)printf("\n\tgroup (%u, %u%s",
                    s->st_gid, p->fts_statb.st_gid, uflag ? "" : ")");
                if (uflag)
                        if (chown(p->fts_accpath, -1, s->st_gid))
                                (void)printf(", not modified: %s)",
                                    strerror(errno));
                        else
                                (void)printf(", modified)");
        }
        if (s->flags & F_NLINK && s->type != F_DIR &&
            s->st_nlink != p->fts_statb.st_nlink) {
                LABEL;
                (void)printf("\n\tlink count (%u, %u)",
                    s->st_nlink, p->fts_statb.st_nlink);
        }
        if (s->flags & F_SIZE && s->st_size != p->fts_statb.st_size) {
                LABEL;
                (void)printf("\n\tsize (%ld, %ld)",
                    s->st_size, p->fts_statb.st_size);
        }
        if (s->flags & F_SLINK) {
                char *cp;

                if (strcmp(cp = rlink(name), s->slink)) {
                        LABEL;
                        (void)printf("\n\tlink ref (%s, %s)", cp, s->slink);
                }
        }
        if (s->flags & F_TIME && s->st_mtime != p->fts_statb.st_mtime) {
                LABEL;
                (void)printf("\n\tmodification time (%.24s, ",
                    ctime(&s->st_mtime));
                (void)printf("%.24s)", ctime(&p->fts_statb.st_mtime));
        }
        if (label) {
                exitval = 2;
                putchar('\n');
        }
}

char *
inotype(type)
        mode_t type;
{
        switch(type & S_IFMT) {
        case S_IFBLK:
                return("block");
        case S_IFCHR:
                return("char");
        case S_IFDIR:
                return("dir");
        case S_IFREG:
                return("file");
        case S_IFLNK:
                return("link");
        case S_IFSOCK:
                return("socket");
        default:
                return("unknown");
        }
        /* NOTREACHED */
}

char *
ftype(type)
        u_int type;
{
        switch(type) {
        case F_BLOCK:
                return("block");
        case F_CHAR:
                return("char");
        case F_DIR:
                return("dir");
        case F_FIFO:
                return("fifo");
        case F_FILE:
                return("file");
        case F_LINK:
                return("link");
        case F_SOCK:
                return("socket");
        default:
                return("unknown");
        }
        /* NOTREACHED */
}

char *
rlink(name)
        char *name;
{
        register int len;
        static char lbuf[MAXPATHLEN];

        len = readlink(name, lbuf, sizeof(lbuf));
        if (len == -1) {
                (void)fprintf(stderr, "mtree: %s: %s.\n",
                    name, strerror(errno));
                exit(1);
        }
        lbuf[len] = '\0';
        return(lbuf);
}