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   5.10 (Berkeley) 3/31/92";
#endif /* not lint */

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

extern int uflag;

static char *ftype __P((u_int));

#define INDENTNAMELEN   8
#define LABEL \
        if (!label++) { \
                len = printf("%s: ", RP(p)); \
                if (len > INDENTNAMELEN) { \
                        tab = "\t"; \
                        (void)printf("\n"); \
                } else { \
                        tab = ""; \
                        (void)printf("%*s", INDENTNAMELEN - len, ""); \
                } \
        }

int
compare(name, s, p)
        char *name;
        register NODE *s;
        register FTSENT *p;
{
        extern int uflag;
        u_long len, val;
        int fd, label;
        char *cp, *tab;

        label = 0;
        switch(s->type) {
        case F_BLOCK:
                if (!S_ISBLK(p->fts_statp->st_mode))
                        goto typeerr;
                break;
        case F_CHAR:
                if (!S_ISCHR(p->fts_statp->st_mode))
                        goto typeerr;
                break;
        case F_DIR:
                if (!S_ISDIR(p->fts_statp->st_mode))
                        goto typeerr;
                break;
        case F_FIFO:
                if (!S_ISFIFO(p->fts_statp->st_mode))
                        goto typeerr;
                break;
        case F_FILE:
                if (!S_ISREG(p->fts_statp->st_mode))
                        goto typeerr;
                break;
        case F_LINK:
                if (!S_ISLNK(p->fts_statp->st_mode))
                        goto typeerr;
                break;
        case F_SOCK:
                if (!S_ISSOCK(p->fts_statp->st_mode)) {
typeerr:                LABEL;
                        (void)printf("\ttype (%s, %s)\n",
                            ftype(s->type), inotype(p->fts_statp->st_mode));
                }
                break;
        }
        /* Set the uid/gid first, then set the mode. */
        if (s->flags & (F_UID | F_UNAME) && s->st_uid != p->fts_statp->st_uid) {
                LABEL;
                (void)printf("%suser (%u, %u",
                    tab, s->st_uid, p->fts_statp->st_uid);
                if (uflag)
                        if (chown(p->fts_accpath, s->st_uid, -1))
                                (void)printf(", not modified: %s)\n",
                                    strerror(errno));
                        else
                                (void)printf(", modified)\n");
                else
                        (void)printf(")\n");
                tab = "\t";
        }
        if (s->flags & (F_GID | F_GNAME) && s->st_gid != p->fts_statp->st_gid) {
                LABEL;
                (void)printf("%sgid (%u, %u",
                    tab, s->st_gid, p->fts_statp->st_gid);
                if (uflag)
                        if (chown(p->fts_accpath, -1, s->st_gid))
                                (void)printf(", not modified: %s)",
                                    strerror(errno));
                        else
                                (void)printf(", modified)");
                else
                        (void)printf(")\n");
                tab = "\t";
        }
        if (s->flags & F_MODE &&
            s->st_mode != (p->fts_statp->st_mode & MBITS)) {
                LABEL;
                (void)printf("%spermissions (%#o, %#o",
                    tab, s->st_mode, p->fts_statp->st_mode & MBITS);
                if (uflag)
                        if (chmod(p->fts_accpath, s->st_mode))
                                (void)printf(", not modified: %s)",
                                    strerror(errno));
                        else
                                (void)printf(", modified)");
                else
                        (void)printf(")\n");
                tab = "\t";
        }
        if (s->flags & F_NLINK && s->type != F_DIR &&
            s->st_nlink != p->fts_statp->st_nlink) {
                LABEL;
                (void)printf("%slink count (%u, %u)\n",
                    tab, s->st_nlink, p->fts_statp->st_nlink);
                tab = "\t";
        }
        if (s->flags & F_SIZE && s->st_size != p->fts_statp->st_size) {
                LABEL;
                (void)printf("%ssize (%ld, %ld)\n",
                    tab, s->st_size, p->fts_statp->st_size);
                tab = "\t";
        }
        if (s->flags & F_TIME && s->st_mtime != p->fts_statp->st_mtime) {
                LABEL;
                (void)printf("%smodification time (%.24s, ",
                    tab, ctime(&s->st_mtime));
                (void)printf("%.24s)\n", ctime(&p->fts_statp->st_mtime));
                tab = "\t";
        }
        if (s->flags & F_CKSUM)
                if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0) {
                        LABEL;
                        (void)printf("%scksum: %s: %s\n",
                            tab, p->fts_accpath, strerror(errno));
                        tab = "\t";
                } else if (crc(fd, &val, &len)) {
                        (void)close(fd);
                        LABEL;
                        (void)printf("%scksum: %s: %s\n",
                            tab, p->fts_accpath, strerror(errno));
                        tab = "\t";
                } else {
                        (void)close(fd);
                        if (s->cksum != val) {
                                LABEL;
                                (void)printf("%scksum (%lu, %lu)\n",
                                    tab, s->cksum, val);
                        }
                        tab = "\t";
                }
        if (s->flags & F_SLINK && strcmp(cp = rlink(name), s->slink)) {
                LABEL;
                (void)printf("%slink ref (%s, %s)\n", tab, cp, s->slink);
        }
        return (label);
}

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

static 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;
{
        static char lbuf[MAXPATHLEN];
        register int len;

        if ((len = readlink(name, lbuf, sizeof(lbuf))) == -1)
                err("%s: %s", name, strerror(errno));
        lbuf[len] = '\0';
        return (lbuf);
}