Hi,
Here's a patch to make mtree support exclude-list. My ultimate goal is
to monitor some directory activity as describe in security(8) (part on
/etc/mtree/something.secure) excluding some files (e.g. logs).
The code is mostly copied from FreeBSD.
Index: Makefile
===================================================================
RCS file: /cvs/src/usr.sbin/mtree/Makefile,v
retrieving revision 1.9
diff -u -p -u -p -r1.9 Makefile
--- Makefile 15 Apr 2013 06:25:18 -0000 1.9
+++ Makefile 10 Jun 2014 14:09:08 -0000
@@ -3,6 +3,6 @@
PROG= mtree
#CFLAGS+=-DDEBUG
MAN= mtree.8
-SRCS= compare.c crc.c create.c misc.c mtree.c spec.c verify.c
+SRCS= compare.c crc.c create.c excludes.c misc.c mtree.c spec.c verify.c
.include <bsd.prog.mk>
Index: create.c
===================================================================
RCS file: /cvs/src/usr.sbin/mtree/create.c,v
retrieving revision 1.29
diff -u -p -u -p -r1.29 create.c
--- create.c 22 Aug 2013 04:43:41 -0000 1.29
+++ create.c 10 Jun 2014 14:09:08 -0000
@@ -90,6 +90,10 @@ cwalk(void)
while ((p = fts_read(t))) {
if (iflag)
indent = p->fts_level * 4;
+ if (check_excludes(p->fts_name, p->fts_path)) {
+ fts_set(t, p, FTS_SKIP);
+ continue;
+ }
switch(p->fts_info) {
case FTS_D:
if (!dflag)
Index: excludes.c
===================================================================
RCS file: excludes.c
diff -N excludes.c
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ excludes.c 10 Jun 2014 14:09:08 -0000
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2000 Massachusetts Institute of Technology
+ *
+ * Permission to use, copy, modify, and distribute this software and
+ * its documentation for any purpose and without fee is hereby
+ * granted, provided that both the above copyright notice and this
+ * permission notice appear in all copies, that both the above
+ * copyright notice and this permission notice appear in all
+ * supporting documentation, and that the name of M.I.T. not be used
+ * in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission. M.I.T. makes
+ * no representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
+ * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
+ * SHALL M.I.T. 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.
+ */
+
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <err.h>
+#include <fnmatch.h>
+#include <fts.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "mtree.h"
+#include "extern.h"
+
+/*
+ * We're assuming that there won't be a whole lot of excludes,
+ * so it's OK to use a stupid algorithm.
+ */
+struct exclude {
+ LIST_ENTRY(exclude) link;
+ const char *glob;
+ int pathname;
+};
+static LIST_HEAD(, exclude) excludes;
+
+void
+init_excludes(void)
+{
+ LIST_INIT(&excludes);
+}
+
+void
+read_excludes_file(const char *name)
+{
+ FILE *fp;
+ char *buf, *lbuf;
+ struct exclude *e;
+ size_t len;
+
+
+ fp = fopen(name, "r");
+ if (fp == NULL)
+ err(1, "%s", name);
+
+ lbuf = NULL;
+ while ((buf = fgetln(fp, &len))) {
+ if (buf[len - 1] == '\n') {
+ if (len == 1)
+ continue;
+ buf[len - 1] = '\0';
+ } else {
+ len++;
+ if ((lbuf = malloc(len)) == NULL)
+ err(1, NULL);
+ memcpy(lbuf, buf, len - 1);
+ lbuf[len - 1] = '\0';
+ buf = lbuf;
+ }
+
+ if ((e = malloc(sizeof *e)) == NULL)
+ err(1, NULL);
+ if ((e->glob = malloc(len)) == NULL)
+ err(1, NULL);
+ memcpy((char *) e->glob, buf, len);
+ if (strchr(e->glob, '/'))
+ e->pathname = 1;
+ else
+ e->pathname = 0;
+ LIST_INSERT_HEAD(&excludes, e, link);
+ }
+ free(lbuf);
+ fclose(fp);
+}
+
+int
+check_excludes(const char *fname, const char *path)
+{
+ struct exclude *e;
+
+ /* Remove leading dot-slash before path match */
+ if ((path[0] == '.') && (path[1] == '/'))
+ path += 2;
+
+ LIST_FOREACH(e, &excludes, link) {
+ if ((e->pathname && !fnmatch(e->glob, path, FNM_PATHNAME))
+ || !fnmatch(e->glob, fname, FNM_PATHNAME))
+ return 1;
+ }
+ return 0;
+}
Index: extern.h
===================================================================
RCS file: /cvs/src/usr.sbin/mtree/extern.h,v
retrieving revision 1.8
diff -u -p -u -p -r1.8 extern.h
--- extern.h 10 Aug 2005 00:42:09 -0000 1.8
+++ extern.h 10 Jun 2014 14:09:08 -0000
@@ -46,3 +46,6 @@ u_int parsekey(char *, int *);
char *rlink(char *);
struct _node *spec(void);
int verify(void);
+int check_excludes(const char *, const char*);
+void init_excludes(void);
+void read_excludes_file(const char*);
Index: mtree.8
===================================================================
RCS file: /cvs/src/usr.sbin/mtree/mtree.8,v
retrieving revision 1.37
diff -u -p -u -p -r1.37 mtree.8
--- mtree.8 10 Jan 2014 20:20:34 -0000 1.37
+++ mtree.8 10 Jun 2014 14:09:08 -0000
@@ -45,6 +45,7 @@
.Op Fl k Ar keywords
.Op Fl p Ar path
.Op Fl s Ar seed
+.Op Fl X Ar exclude-list
.Ek
.Sh DESCRIPTION
The utility
@@ -147,6 +148,20 @@ option except a status of 2 is returned
did not match the specification.
.It Fl x
Don't descend below mount points in the file hierarchy.
+.It Fl X Ar exclude-list
+The specified file contains
+.Xr fnmatch 3
+patterns matching files to be excluded from
+the specification, one to a line.
+If the pattern contains a
+.Ql \&/
+character, it will be matched against entire pathnames (relative to
+the starting directory); otherwise,
+it will be matched against basenames only.
+No comments are allowed in
+the
+.Ar exclude-list
+file.
.El
.Pp
Specifications are mostly composed of
Index: mtree.c
===================================================================
RCS file: /cvs/src/usr.sbin/mtree/mtree.c,v
retrieving revision 1.21
diff -u -p -u -p -r1.21 mtree.c
--- mtree.c 27 Nov 2013 13:32:02 -0000 1.21
+++ mtree.c 10 Jun 2014 14:09:08 -0000
@@ -55,12 +55,13 @@ main(int argc, char *argv[])
extern int optind;
extern char *optarg;
int ch;
- char *dir, *p;
+ char *dir, *p, *excl;
int status;
dir = NULL;
+ excl = NULL;
keys = KEYDEFAULT;
- while ((ch = getopt(argc, argv, "cdef:iK:k:lnp:qrs:tUux")) != -1)
+ while ((ch = getopt(argc, argv, "cdef:iK:k:lnp:qrs:tUuxX:")) != -1)
switch(ch) {
case 'c':
cflag = 1;
@@ -123,6 +124,9 @@ main(int argc, char *argv[])
case 'x':
ftsoptions |= FTS_XDEV;
break;
+ case 'X':
+ excl = optarg;
+ break;
case '?':
default:
usage();
@@ -133,6 +137,11 @@ main(int argc, char *argv[])
if (argc)
usage();
+ if (excl) {
+ init_excludes();
+ read_excludes_file(excl);
+ }
+
if (dir && chdir(dir))
error("%s: %s", dir, strerror(errno));
@@ -158,6 +167,6 @@ usage(void)
(void)fprintf(stderr,
"usage: mtree [-cdeilnqrtUux] [-f spec] [-K keywords] "
"[-k keywords] [-p path]\n"
- " [-s seed]\n");
+ " [-s seed] [-X excludes]\n");
exit(1);
}
--
Manuel Giraud
