[apparmor] [PATCH 2/3] Add mount rules
John Johansen
john.johansen at canonical.com
Thu Feb 23 22:33:19 UTC 2012
Add the ability to control mounting and unmounting
The basic form of the rules are.
[audit] [deny] mount [conds]* [device] [ -> [conds] path],
[audit] [deny] remount [conds]* [path],
[audit] [deny] umount [conds]* [path],
[audit] [deny] pivotroot [oldroot=<value>] <path> -> <profile>
remount is just a short cut for mount options=remount
where [conds] can be
fstype=<expr>
options=<expr>
conds follow the extended conditional syntax of allowing either:
* a single value after the equals, which has the same character range as
regular IDS (ie most anything but it can't be terminated with a , (comma)
and if spaces or other characters are needed it can be quoted
eg.
options=foo
options = foo
options="foo bar"
* a list of values after the equals, the list of values is enclosed within
parenthesis () and its has a slightly reduced character set but again
elements can be quoted.
the separation between elements is whitespace and commas.
eg.
options=(foo bar)
options=(foo, bar)
options=(foo , bar)
options=(foo,bar)
The rules are flexible and follow a similar pattern as network, capability,
etc.
mount, # allow all mounts, but not umount or pivotroot
mount fstype=procfs, # allow mounting procfs anywhere
mount options=(bind, ro) /foo -> /bar, # readonly bind mount
mount /dev/sda -> /mnt,
mount /dev/sd** -> /mnt/**,
mount fstype=overlayfs options=(rw,upperdir=/tmp/upper/,lowerdir=/) overlay -> /mnt/
umount,
umount /m*,
Currently variables and regexs are are supported on the device and mount
point. ie.
mount <devince> -> <mount point>,
Regexes are supported in fstype and options. The options have a further
caveat that regexs only work if the option is fs specific option.
eg. options=(upperdir=/tmp/*,lowerdir=/)
regex's will not currently work against the standard options like ro, rw
nosuid
Conditionals (fstype) can only be applied to the device (source) at this
time and will be disregarded in situations where the mount is manipulating
an existing mount (bind, remount).
Options can be specified multiple times
mount option=rw option=(nosuid,upperdir=/foo),
and will be combined together into a single set of values
The ordering of the standard mount options (rw,ro, ...) does not matter
but the ordering of fs specific options does.
Specifying that the value of a particular option does not matter can be
acheived by providing both the positive and negative forms of and option
option=(rw,ro) options=(suid,nosuid)
For the fs specific options specifying that a particular value does not
matter is achieve using a regex with alternations.
Improvements to the syntax and order restrictions are planned for the
future.
Signed-off-by: John Johansen <john.johansen at canonical.com>
---
parser/Makefile | 4 +-
parser/mount.c | 510 ++++++++++++++++++++++++++++++
parser/mount.h | 135 ++++++++
parser/parser.h | 26 ++
parser/parser_lex.l | 96 +++++-
parser/parser_misc.c | 80 +++++
parser/parser_policy.c | 61 +++-
parser/parser_regex.c | 365 +++++++++++++++++++++
parser/parser_variable.c | 82 ++++-
parser/parser_yacc.y | 196 +++++++++++-
parser/tst/simple_tests/mount/ok_1.sd | 7 +
parser/tst/simple_tests/mount/ok_10.sd | 7 +
parser/tst/simple_tests/mount/ok_11.sd | 7 +
parser/tst/simple_tests/mount/ok_12.sd | 7 +
parser/tst/simple_tests/mount/ok_14.sd | 7 +
parser/tst/simple_tests/mount/ok_15.sd | 7 +
parser/tst/simple_tests/mount/ok_16.sd | 7 +
parser/tst/simple_tests/mount/ok_17.sd | 7 +
parser/tst/simple_tests/mount/ok_18.sd | 7 +
parser/tst/simple_tests/mount/ok_19.sd | 7 +
parser/tst/simple_tests/mount/ok_2.sd | 7 +
parser/tst/simple_tests/mount/ok_20.sd | 7 +
parser/tst/simple_tests/mount/ok_21.sd | 7 +
parser/tst/simple_tests/mount/ok_22.sd | 7 +
parser/tst/simple_tests/mount/ok_23.sd | 7 +
parser/tst/simple_tests/mount/ok_3.sd | 7 +
parser/tst/simple_tests/mount/ok_4.sd | 7 +
parser/tst/simple_tests/mount/ok_5.sd | 10 +
parser/tst/simple_tests/mount/ok_8.sd | 9 +
parser/tst/simple_tests/mount/ok_9.sd | 7 +
parser/tst/simple_tests/mount/okay_13.sd | 7 +
parser/tst/simple_tests/mount/okay_6.sd | 7 +
parser/tst/simple_tests/mount/okay_7.sd | 7 +
33 files changed, 1676 insertions(+), 45 deletions(-)
create mode 100644 parser/mount.c
create mode 100644 parser/mount.h
create mode 100644 parser/tst/simple_tests/mount/ok_1.sd
create mode 100644 parser/tst/simple_tests/mount/ok_10.sd
create mode 100644 parser/tst/simple_tests/mount/ok_11.sd
create mode 100644 parser/tst/simple_tests/mount/ok_12.sd
create mode 100644 parser/tst/simple_tests/mount/ok_14.sd
create mode 100644 parser/tst/simple_tests/mount/ok_15.sd
create mode 100644 parser/tst/simple_tests/mount/ok_16.sd
create mode 100644 parser/tst/simple_tests/mount/ok_17.sd
create mode 100644 parser/tst/simple_tests/mount/ok_18.sd
create mode 100644 parser/tst/simple_tests/mount/ok_19.sd
create mode 100644 parser/tst/simple_tests/mount/ok_2.sd
create mode 100644 parser/tst/simple_tests/mount/ok_20.sd
create mode 100644 parser/tst/simple_tests/mount/ok_21.sd
create mode 100644 parser/tst/simple_tests/mount/ok_22.sd
create mode 100644 parser/tst/simple_tests/mount/ok_23.sd
create mode 100644 parser/tst/simple_tests/mount/ok_3.sd
create mode 100644 parser/tst/simple_tests/mount/ok_4.sd
create mode 100644 parser/tst/simple_tests/mount/ok_5.sd
create mode 100644 parser/tst/simple_tests/mount/ok_8.sd
create mode 100644 parser/tst/simple_tests/mount/ok_9.sd
create mode 100644 parser/tst/simple_tests/mount/okay_13.sd
create mode 100644 parser/tst/simple_tests/mount/okay_6.sd
create mode 100644 parser/tst/simple_tests/mount/okay_7.sd
diff --git a/parser/Makefile b/parser/Makefile
index 15cbe62..528d1b3 100644
--- a/parser/Makefile
+++ b/parser/Makefile
@@ -76,8 +76,8 @@ EXTRA_CFLAGS+=-DSUBDOMAIN_CONFDIR=\"${CONFDIR}\"
SRCS = parser_common.c parser_include.c parser_interface.c parser_lex.c \
parser_main.c parser_misc.c parser_merge.c parser_symtab.c \
parser_yacc.c parser_regex.c parser_variable.c parser_policy.c \
- parser_alias.c
-HDRS = parser.h parser_include.h immunix.h
+ parser_alias.c mount.c
+HDRS = parser.h parser_include.h immunix.h mount.h
TOOLS = apparmor_parser
OBJECTS = $(SRCS:.c=.o)
diff --git a/parser/mount.c b/parser/mount.c
new file mode 100644
index 0000000..80fca85
--- /dev/null
+++ b/parser/mount.c
@@ -0,0 +1,510 @@
+/*
+ * Copyright (c) 2010
+ * Canonical, Ltd. (All rights reserved)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, contact Novell, Inc. or Canonical
+ * Ltd.
+ */
+
+/**
+ * The mount command, its mix of options and flags, its permissions and
+ * mapping are a mess.
+ * mount [-lhV]
+ *
+ * mount -a [-fFnrsvw] [-t vfstype] [-O optlist]
+ *
+ * mount [-fnrsvw] [-o option[,option]...] device|dir
+ *
+ * mount [-fnrsvw] [-t vfstype] [-o options] device dir
+ *
+ *----------------------------------------------------------------------
+ * Mount flags of no interest for apparmor mediation
+ * -a, --all
+ * -F fork for simultaneous mount
+ * -f fake, do everything except that actual system call
+ * -h --help
+ * -i, --internal-only
+ * -n mount without writing in /etc/mtab
+ * -O <optlist> limits what is auto mounted
+ * -p, --pass-fd num
+ * -s Tolerate sloppy mount options
+ * -U uuid
+ * -V --version
+ * --no-canonicalize
+ *
+ *----------------------------------------------------------------------
+ * what do we do with these
+ * -l list?
+ * -L <label> label
+ * -v --verbose deprecated
+ *
+ *----------------------------------------------------------------------
+ * Filesystem type
+ * -t <vfstype>
+ * vfstype=<vfstype>
+ *
+ *----------------------------------------------------------------------
+ * Mount Flags/options (-o --options)
+ * -o option[,option]
+ *
+ * The Linux kernel has 32 fs - independent mount flags, that mount command
+ * is responsible for stripping out and mapping to a 32 bit flags field.
+ * The mount commands mapping is documented below.
+ *
+ * Unfortunately we can not directly use this mapping as we need to be able
+ * represent, whether none, 1 or both options of a flag can be present for
+ * example
+ * ro, and rw information is stored in a single bit. But we need 2 bits
+ * of information.
+ * ro - the mount can only be readonly
+ * rw - the mount can only be rw
+ * ro/rw - the mount can be either ro/rw
+ * the fourth state of neither ro/rw does not exist, but still we need
+ * >1 bit to represent the possible choices
+ *
+ * The fs specific mount options are passed into the kernel as a string
+ * to be interpreted by the filesystem.
+ *
+ *
+ * #define MS_RDONLY 1 Mount read-only
+ * ro -r --read-only [source] dest
+ * rw -w
+ * #define MS_NOSUID 2 Ignore suid and sgid bits
+ * nosuid
+ * suid
+ * #define MS_NODEV 4 Disallow access to device special files
+ * nodev
+ * dev
+ * #define MS_NOEXEC 8 Disallow program execution
+ * noexec
+ * exec
+ * #define MS_SYNCHRONOUS 16 Writes are synced at once
+ * sync
+ * async
+ * #define MS_REMOUNT 32 Alter flags of a mounted FS
+ * remount source dest
+ * #define MS_MANDLOCK 64 Allow mandatory locks on an FS
+ * mand
+ * nomand
+ * #define MS_DIRSYNC 128 Directory modifications are synchronous
+ * dirsync
+ * #define MS_NOATIME 1024 Do not update access times
+ * noatime
+ * atime
+ * #define MS_NODIRATIME 2048 Do not update directory access times
+ * nodiratime
+ * diratime
+ * #define MS_BIND 4096
+ * --bind -B source dest
+ * #define MS_MOVE 8192
+ * --move -M source dest
+ * #define MS_REC 16384
+ * --rbind -R source dest
+ * --make-rshared dest
+ * --make-rslave dest
+ * --make-rprivate dest
+ * --make-runbindable dest
+ * #define MS_VERBOSE 32768 MS_VERBOSE is deprecated
+ * #define MS_SILENT 32768
+ * silent
+ * load
+ * #define MS_POSIXACL (1<<16) VFS does not apply the umask
+ * acl
+ * noacl
+ * #define MS_UNBINDABLE (1<<17) change to unbindable
+ * --make-unbindable dest
+ * #define MS_PRIVATE (1<<18) change to private
+ * --make-private dest
+ * #define MS_SLAVE (1<<19) change to slave
+ * --make-slave dest
+ * #define MS_SHARED (1<<20) change to shared
+ * --make-shared dest
+ * #define MS_RELATIME (1<<21) Update atime relative to mtime/ctime
+ * relatime
+ * norelatime
+ * #define MS_KERNMOUNT (1<<22) this is a kern_mount call
+ * #define MS_I_VERSION (1<<23) Update inode I_version field
+ * iversion
+ * noiversion
+ * #define MS_STRICTATIME (1<<24) Always perform atime updates
+ * strictatime
+ * nostrictatime
+ * #define MS_NOSEC (1<<28)
+ * #define MS_BORN (1<<29)
+ * #define MS_ACTIVE (1<<30)
+ * #define MS_NOUSER (1<<31)
+ * nouser
+ * user
+ *
+ * other mount options of interest
+ *
+ * selinux
+ * context=<context>
+ * fscontext=<context>
+ * defcontext=<context>,
+ * rootcontext=<context>
+ *
+ * defaults -> rw, suid, dev, exec, auto, nouser, async
+ * owner -> implies nosuid and nodev
+ * users -> implies noexec, nosuid, and nodev
+ *
+ *----------------------------------------------------------------------
+ * AppArmor mount rules
+ *
+ * AppArmor mount rules try to leverage mount syntax within apparmor syntax
+ * this can not be done entirely but it is largely covered.
+ *
+ * The general mount syntax is
+ * [audit] [deny] [owner] mount [conds]* [source] [ -> [conds] path],
+ * [audit] [deny] remount [conds]* [path],
+ * [audit] [deny] umount [conds]* [path],
+ *
+ * Note: leading owner option applies owner condition to both sours and dest
+ * path.
+ *
+ * where [conds] can be
+ * fstype=<expr>
+ * options=<expr>
+ * owner[=<expr>]
+ *
+ * <expr> := <re> | '(' (<re>[,])+ ')'
+ *
+ * If a condition is not specified then it is assumed to match all possible
+ * entries for it. ie. a missing fstype means all fstypes are matched.
+ * However if a condition is specified then the rule only grants permission
+ * for mounts matching the specified pattern.
+ *
+ * Examples.
+ * mount, # allow any mount
+ * mount /dev/foo, # allow mounting of /dev/foo anywhere
+ * mount options=ro /dev/foo, #allow mounting /dev/foo as read only
+ * mount options=(ro,foo) /dev/foo,
+ * mount options=ro options=foo /dev/foo,
+ * mount -> /mnt/**, # allow any mount on dirs under /mnt/
+ * mount options=ro -> /mnt/**, # allow any read only mount under /mnt/
+ * mount fstype=overlayfs options=(rw,upperdir=/tmp/upper/,lowerdir=/) overlay -> /mnt/
+ *
+ *----------------------------------------------------------------------
+ * pivotroot
+ * pivotroot [oldroot=<value>] <path> -> <profile>
+ * pivotroot <path> -> { }
+ *
+ *----------------------------------------------------------------------
+ * chroot
+ * chroot <path> -> <profile>
+ * chroot <path> -> { }
+ *
+ *----------------------------------------------------------------------
+ * AppArmor mount rule encoding
+ *
+ * TODO:
+ * add semantic checking of options against specified filesytem types
+ * to catch mount options that can't be covered.
+ *
+ *
+ */
+
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "parser.h"
+#include "mount.h"
+
+struct mnt_keyword_table {
+ char *keyword;
+ unsigned int set;
+ unsigned int clear;
+};
+
+static struct mnt_keyword_table mnt_opts_table[] = {
+ {"ro", MS_RDONLY, 0},
+ {"r", MS_RDONLY, 0},
+ {"read-only", MS_RDONLY, 0},
+ {"rw", 0, MS_RDONLY},
+ {"w", 0, MS_RDONLY},
+ {"suid", 0, MS_NOSUID},
+ {"nosuid", MS_NOSUID, 0},
+ {"dev", 0, MS_NODEV},
+ {"nodev", MS_NODEV, 0},
+ {"exec", 0, MS_NOEXEC},
+ {"noexec", MS_NOEXEC, 0},
+ {"sync", MS_SYNC, 0},
+ {"async", 0, MS_SYNC},
+ {"remount", MS_REMOUNT, 0},
+ {"mand", MS_MAND, 0},
+ {"nomand", 0, MS_MAND},
+ {"dirsync", MS_DIRSYNC, 0},
+ {"atime", 0, MS_NOATIME},
+ {"noatime", MS_NOATIME, 0},
+ {"diratime", 0, MS_NODIRATIME},
+ {"nodiratime", MS_NODIRATIME, 0},
+ {"bind", MS_BIND, 0},
+ {"B", MS_BIND, 0},
+ {"move", MS_MOVE, 0},
+ {"M", MS_MOVE, 0},
+ {"rbind", MS_RBIND, 0},
+ {"R", MS_RBIND, 0},
+ {"verbose", MS_VERBOSE, 0},
+ {"silent", MS_SILENT, 0},
+ {"load", 0, MS_SILENT},
+ {"acl", MS_ACL, 0},
+ {"noacl", 0, MS_ACL},
+ {"make-unbindable", MS_UNBINDABLE, 0},
+ {"make-runbindable", MS_RUNBINDABLE, 0},
+ {"make-private", MS_PRIVATE, 0},
+ {"make-rprivate", MS_RPRIVATE, 0},
+ {"make-slave", MS_SLAVE, 0},
+ {"make-rslave", MS_RSLAVE, 0},
+ {"make-shared", MS_SHARED, 0},
+ {"make-rshared", MS_RSHARED, 0},
+
+ {"relatime", MS_RELATIME, 0},
+ {"norelatime", 0, MS_NORELATIME},
+ {"iversion", MS_IVERSION, 0},
+ {"noiversion", 0, MS_IVERSION},
+ {"strictatime", MS_STRICTATIME, 0},
+ {"user", 0, MS_NOUSER},
+ {"nouser", MS_NOUSER, 0},
+
+ { }
+};
+
+static struct mnt_keyword_table mnt_conds_table[] = {
+ {"options", MNT_SRC_OPT, MNT_COND_OPTIONS},
+ {"option", MNT_SRC_OPT, MNT_COND_OPTIONS},
+ {"fstype", MNT_SRC_OPT | MNT_DST_OPT, MNT_COND_FSTYPE},
+ {"vfstype", MNT_SRC_OPT | MNT_DST_OPT, MNT_COND_FSTYPE},
+
+ { }
+};
+
+static int find_mnt_keyword(struct mnt_keyword_table *table, const char *name)
+{
+ int i;
+ for (i = 0; table[i].keyword; i++) {
+ if (strcmp(name, table[i].keyword) == 0)
+ return i;
+ }
+
+ return -1;
+}
+
+int is_valid_mnt_cond(const char *name, int src)
+{
+ int i;
+ i = find_mnt_keyword(mnt_conds_table, name);
+ if (i != -1)
+ return (mnt_conds_table[i].set & src);
+ return -1;
+}
+
+static unsigned int extract_flags(struct value_list **list, unsigned int *inv)
+{
+ unsigned int flags = 0;
+ *inv = 0;
+
+ struct value_list *entry, *tmp, *prev = NULL;
+ list_for_each_safe(*list, entry, tmp) {
+ int i;
+ i = find_mnt_keyword(mnt_opts_table, entry->value);
+ if (i != -1) {
+ flags |= mnt_opts_table[i].set;
+ *inv |= mnt_opts_table[i].clear;
+ PDEBUG(" extracting mount flag %s req: 0x%x inv: 0x%x"
+ " => req: 0x%x inv: 0x%x\n",
+ entry->value, mnt_opts_table[i].set,
+ mnt_opts_table[i].clear, flags, *inv);
+ if (prev)
+ prev->next = tmp;
+ if (entry == *list)
+ *list = tmp;
+ entry->next = NULL;
+ free_value_list(entry);
+ } else
+ prev = entry;
+ }
+
+ return flags;
+}
+
+static struct value_list *extract_fstype(struct cond_entry **conds)
+{
+ struct value_list *list = NULL;
+
+ struct cond_entry *entry, *tmp, *prev = NULL;
+
+ list_for_each_safe(*conds, entry, tmp) {
+ if (strcmp(entry->name, "fstype") == 0 ||
+ strcmp(entry->name, "vfstype") == 0) {
+ PDEBUG(" extracting fstype\n");
+ if (prev)
+ prev->next = tmp;
+ if (entry == *conds)
+ *conds = tmp;
+ entry->next = NULL;
+ list_append(entry->vals, list);
+ list = entry->vals;
+ entry->vals = NULL;
+ free_cond_entry(entry);
+ } else
+ prev = entry;
+ }
+
+ return list;
+}
+
+static struct value_list *extract_options(struct cond_entry **conds)
+{
+ struct value_list *list = NULL;
+
+ struct cond_entry *entry, *tmp, *prev = NULL;
+
+ list_for_each_safe(*conds, entry, tmp) {
+ if (strcmp(entry->name, "options") == 0 ||
+ strcmp(entry->name, "option") == 0) {
+ if (prev)
+ prev->next = tmp;
+ if (entry == *conds)
+ *conds = tmp;
+ entry->next = NULL;
+ PDEBUG(" extracting option %s\n", entry->name);
+ list_append(entry->vals, list);
+ list = entry->vals;
+ entry->vals = NULL;
+ free_cond_entry(entry);
+ } else
+ prev = entry;
+ }
+
+ return list;
+}
+
+struct mnt_entry *new_mnt_entry(struct cond_entry *src_conds, char *device,
+ struct cond_entry *dst_conds, char *mnt_point,
+ int allow)
+{
+ /* FIXME: dst_conds are ignored atm */
+
+ struct mnt_entry *ent;
+ ent = (struct mnt_entry *) calloc(1, sizeof(struct mnt_entry));
+ if (ent) {
+ unsigned int rclear, aclear;
+
+ ent->mnt_point = mnt_point;
+ ent->device = device;
+ ent->dev_type = extract_fstype(&src_conds);
+
+ ent->flags = 0;
+
+ if (src_conds) {
+ ent->opts = extract_options(&src_conds);
+ if (ent->opts)
+ ent->flags = extract_flags(&ent->opts,
+ &ent->inv_flags);
+ }
+
+ if (allow & AA_DUMMY_REMOUNT) {
+ allow = AA_MAY_MOUNT;
+ ent->flags |= MS_REMOUNT;
+ ent->inv_flags = 0;
+ } else if (!(ent->flags | ent->inv_flags)) {
+ /* no flag options, and not remount, allow everything */
+ ent->flags = 0xffffffff;
+ ent->inv_flags = 0xffffffff;
+ }
+
+ ent->allow = allow;
+
+ if (src_conds) {
+ PERROR(" unsupported mount conditions\n");
+ exit(1);
+ }
+ }
+
+ return ent;
+}
+
+void free_mnt_entry(struct mnt_entry *ent)
+{
+ if (!ent)
+ return;
+
+ free_mnt_entry(ent->next);
+ free_value_list(ent->opts);
+ free_value_list(ent->dev_type);
+ free(ent->device);
+ free(ent->mnt_point);
+ free(ent->trans);
+
+ free(ent);
+}
+
+
+struct mnt_entry *dup_mnt_entry(struct mnt_entry *orig)
+{
+ struct mnt_entry *entry = NULL;
+
+ entry = (struct mnt_entry *) calloc(1, sizeof(struct mnt_entry));
+ if (!entry)
+ return NULL;
+
+ entry->mnt_point = orig->mnt_point ? strdup(orig->mnt_point) : NULL;
+ entry->device = orig->device ? strdup(orig->device) : NULL;
+ entry->trans = orig->trans ? strdup(orig->trans) : NULL;
+
+ entry->dev_type = dup_value_list(orig->dev_type);
+ entry->opts = dup_value_list(orig->opts);
+
+ entry->flags = orig->flags;
+ entry->inv_flags = orig->inv_flags;
+
+ entry->allow = orig->allow;
+ entry->audit = orig->audit;
+ entry->deny = orig->deny;
+
+ entry->next = orig->next;
+
+ return entry;
+}
+
+void print_mnt_entry(struct mnt_entry *entry)
+{
+ if (entry->allow & AA_MAY_MOUNT)
+ fprintf(stderr, "mount");
+ else if (entry->allow & AA_MAY_UMOUNT)
+ fprintf(stderr, "umount");
+ else if (entry->allow & AA_MAY_PIVOTROOT)
+ fprintf(stderr, "pivotroot");
+ else
+ fprintf(stderr, "error: unknonwn mount perm");
+
+ fprintf(stderr, " (0x%x - 0x%x) ", entry->flags, entry->inv_flags);
+ if (entry->dev_type) {
+ fprintf(stderr, " type=");
+ print_value_list(entry->dev_type);
+ }
+ if (entry->opts) {
+ fprintf(stderr, " options=");
+ print_value_list(entry->opts);
+ }
+ if (entry->device)
+ fprintf(stderr, " %s", entry->device);
+ if (entry->mnt_point)
+ fprintf(stderr, " -> %s", entry->mnt_point);
+ if (entry->trans)
+ fprintf(stderr, " -> %s", entry->trans);
+
+ fprintf(stderr, " %s (0x%x/0x%x)", entry->deny ? "deny" : "", entry->allow, entry->audit);
+ fprintf(stderr, ",\n");
+}
diff --git a/parser/mount.h b/parser/mount.h
new file mode 100644
index 0000000..c679c21
--- /dev/null
+++ b/parser/mount.h
@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2010
+ * Canonical, Ltd. (All rights reserved)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, contact Novell, Inc. or Canonical
+ * Ltd.
+ */
+
+#ifndef __AA_MOUNT_H
+#define __AA_MOUNT_H
+
+#include "parser.h"
+
+#define MS_RDONLY (1 << 0)
+#define MS_RW 0
+#define MS_NOSUID (1 << 1)
+#define MS_SUID 0
+#define MS_NODEV (1 << 2)
+#define MS_DEV 0
+#define MS_NOEXEC (1 << 3)
+#define MS_EXEC 0
+#define MS_SYNC (1 << 4)
+#define MS_ASYNC 0
+#define MS_REMOUNT (1 << 5)
+#define MS_MAND (1 << 6)
+#define MS_NOMAND 0
+#define MS_DIRSYNC (1 << 7)
+#define MS_NODIRSYNC 0
+#define MS_NOATIME (1 << 10)
+#define MS_ATIME 0
+#define MS_NODIRATIME (1 << 11)
+#define MS_DIRATIME 0
+#define MS_BIND (1 << 12)
+#define MS_MOVE (1 << 13)
+#define MS_REC (1 << 14)
+#define MS_VERBOSE (1 << 15)
+#define MS_SILENT (1 << 15)
+#define MS_LOAD 0
+#define MS_ACL (1 << 16)
+#define MS_NOACL 0
+#define MS_UNBINDABLE (1 << 17)
+#define MS_PRIVATE (1 << 18)
+#define MS_SLAVE (1 << 19)
+#define MS_SHARED (1 << 20)
+#define MS_RELATIME (1 << 21)
+#define MS_NORELATIME 0
+#define MS_IVERSION (1 << 23)
+#define MS_NOIVERSION 0
+#define MS_STRICTATIME (1 << 24)
+#define MS_NOUSER (1 << 31)
+#define MS_USER 0
+
+#define MS_ALL_FLAGS 0x71bffcff
+#define MS_ALL_FLAGS (MS_RDONLY | MS_NOSUID | MS_NODEV | MS_NOEXEC | \
+ MS_SYNC | MS_REMOUNT | MS_MAND | MS_DIRSYNC | \
+ MS_NOATIME | MS_NODIRATIME | MS_BIND | MS_MOVE | \
+ MS_REC | MS_VERBOSE | MS_ACL | MS_UNBINDABLE | \
+ MS_PRIVATE | MS_SLAVE | MS_SHARED | MS_RELATIME | \
+ MS_IVERSION | MS_STRICT_ATIME | MS_USER)
+
+#define MS_RBIND (MS_BIND | MS_REC)
+#define MS_RUNBINDABLE (MS_UNBINDABLE | MS_REC)
+#define MS_RPRIVATE (MS_PRIVATE | MS_REC)
+#define MS_RSLAVE (MS_SLAVE | MS_REC)
+#define MS_RSHARED (MS_SHARED | MS_REC)
+
+/* set of flags we don't use but define (but not with the kernel values)
+ * for MNT_FLAGS
+ */
+#define MS_ACTIVE 0
+#define MS_BORN 0
+#define MS_KERNMOUNT 0
+
+/* from kernel fs/namespace.c - set of flags masked off */
+#define MNT_FLAGS (MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | \
+ MS_BORN | MS_NOATIME | MS_NODIRATIME | MS_RELATIME| \
+ MS_KERNMOUNT | MS_STRICTATIME);
+
+#define MS_REMOUNT_FLAGS (MS_REMOUNT | MNT_FLAGS)
+#define MS_BIND_FLAGS (MS_BIND | MS_REC)
+#define MS_MAKE_FLAGS ((MS_UNBINDABLE | MS_PRIVATE | MS_SLAVE | MS_SHARED | \
+ MS_REC) | (MS_ALL_FLAGS & ~(MNT_FLAGS)))
+#define MS_MOVE_FLAGS (MS_MOVE)
+
+#define MS_CMDS (MS_MOVE | MS_REMOUNT | MS_BIND | MS_PRIVATE | MS_SLAVE | \
+ MS_SHARED | MS_UNBINDABLE)
+
+#define MNT_SRC_OPT 1
+#define MNT_DST_OPT 2
+
+#define MNT_COND_FSTYPE 1
+#define MNT_COND_OPTIONS 2
+
+#define AA_MAY_PIVOTROOT 1
+#define AA_MAY_MOUNT 2
+#define AA_MAY_UMOUNT 4
+#define AA_DUMMY_REMOUNT 32 /* dummy perm for remount rule - is remapped
+ * to a mount option*/
+
+
+struct mnt_entry {
+ char *mnt_point;
+ char *device;
+ char *trans;
+ struct value_list *dev_type;
+ struct value_list *opts;
+
+ unsigned int flags, inv_flags;
+
+ int allow, audit;
+ int deny;
+ struct mnt_entry *next;
+};
+
+void print_mnt_entry(struct mnt_entry *entry);
+
+int is_valid_mnt_cond(const char *name, int src);
+struct mnt_entry *new_mnt_entry(struct cond_entry *sconds, char *device,
+ struct cond_entry *dconds, char *mnt_point,
+ int mode);
+struct mnt_entry *dup_mnt_entry(struct mnt_entry *orig);
+void free_mnt_entry(struct mnt_entry *ent);
+
+
+#endif /* __AA_MOUNT_H */
diff --git a/parser/parser.h b/parser/parser.h
index 7be0f83..899bfb8 100644
--- a/parser/parser.h
+++ b/parser/parser.h
@@ -28,6 +28,8 @@
#include "libapparmor_re/apparmor_re.h"
#include "libapparmor_re/aare_rules.h"
+struct mnt_ent;
+
/* Global variable to pass token to lexer. Will be replaced by parameter
* when lexer and parser are made reentrant
*/
@@ -58,6 +60,13 @@ struct value_list {
struct value_list *next;
};
+struct cond_entry {
+ char *name;
+ struct value_list *vals;
+
+ struct cond_entry *next;
+};
+
struct cod_entry {
char *namespace;
char *name;
@@ -132,6 +141,8 @@ struct codomain {
char *exec_table[AA_EXEC_COUNT];
struct cod_entry *entries;
+ struct mnt_entry *mnt_ents;
+
void *hat_table;
//struct codomain *next;
@@ -234,12 +245,19 @@ extern int preprocess_only;
#define __unused __attribute__ ((unused))
#endif
+
#define list_for_each(LIST, ENTRY) \
for ((ENTRY) = (LIST); (ENTRY); (ENTRY) = (ENTRY)->next)
#define list_for_each_safe(LIST, ENTRY, TMP) \
for ((ENTRY) = (LIST), (TMP) = (LIST) ? (LIST)->next : NULL; (ENTRY); (ENTRY) = (TMP), (TMP) = (TMP) ? (TMP)->next : NULL)
#define list_last_entry(LIST, ENTRY) \
for ((ENTRY) = (LIST); (ENTRY) && (ENTRY)->next; (ENTRY) = (ENTRY)->next)
+#define list_append(LISTA, LISTB) \
+ do { \
+ typeof(LISTA) ___tmp; \
+ list_last_entry((LISTA), ___tmp);\
+ ___tmp->next = (LISTB); \
+ } while (0)
/* from parser_common.c */
extern int regex_type;
@@ -286,6 +304,8 @@ extern void reset_regex(void);
extern int process_policydb(struct codomain *cod);
+extern int process_policy_ents(struct codomain *cod);
+
/* parser_variable.c */
extern int process_variables(struct codomain *cod);
extern struct var_string *split_out_var(char *string);
@@ -293,8 +313,12 @@ extern void free_var_string(struct var_string *var);
/* parser_misc.c */
extern struct value_list *new_value_list(char *value);
+extern struct value_list *dup_value_list(struct value_list *list);
extern void free_value_list(struct value_list *list);
extern void print_value_list(struct value_list *list);
+extern struct cond_entry *new_cond_entry(char *name, struct value_list *list);
+extern void free_cond_entry(struct cond_entry *ent);
+extern void print_cond_entry(struct cond_entry *ent);
extern char *processid(char *string, int len);
extern char *processquoted(char *string, int len);
extern char *processunquoted(char *string, int len);
@@ -318,6 +342,7 @@ extern void debug_cod_list(struct codomain *list);
extern int str_to_boolean(const char* str);
extern struct cod_entry *copy_cod_entry(struct cod_entry *cod);
extern void free_cod_entries(struct cod_entry *list);
+extern void free_mnt_entries(struct mnt_entry *list);
/* parser_symtab.c */
struct set_value {;
@@ -356,6 +381,7 @@ extern void add_to_list(struct codomain *codomain);
extern void add_hat_to_policy(struct codomain *policy, struct codomain *hat);
extern void add_entry_to_policy(struct codomain *policy, struct cod_entry *entry);
extern void post_process_nt_entries(struct codomain *cod);
+extern void post_process_mnt_entries(struct codomain *cod);
extern int post_process_policy(int debug_only);
extern int process_hat_regex(struct codomain *cod);
extern int process_hat_variables(struct codomain *cod);
diff --git a/parser/parser_lex.l b/parser/parser_lex.l
index 0c9323b..dd1ff5b 100644
--- a/parser/parser_lex.l
+++ b/parser/parser_lex.l
@@ -45,7 +45,7 @@
#endif
/* #define DEBUG */
#ifdef DEBUG
-#define PDEBUG(fmt, args...) printf("Lexer: " fmt, ## args)
+#define PDEBUG(fmt, args...) printf("Lexer (state %d): " fmt, YY_START, ## args)
#else
#define PDEBUG(fmt, args...) /* Do nothing */
#endif
@@ -187,6 +187,9 @@ POST_VAR_ID_CHARS [^ \t\n"!,]{-}[=\+]
POST_VAR_ID {POST_VAR_ID_CHARS}|(,{POST_VAR_ID_CHARS})
LIST_VALUE_ID_CHARS [^ \t\n"!,]{-}[()]
LIST_VALUE_ID {LIST_VALUE_ID_CHARS}+
+ID_CHARS_NOEQ [^ \t\n"!,]{-}[=]
+ID_NOEQ {ID_CHARS_NOEQ}|(,{ID_CHARS_NOEQ})
+IDS_NOEQ {ID_NOEQ}+
ALLOWED_QUOTED_ID [^\0"]|\\\"
QUOTED_ID \"{ALLOWED_QUOTED_ID}*\"
@@ -211,12 +214,14 @@ ADD_ASSIGN \+=
ARROW ->
LT_EQUAL <=
-%x SUB_NAME
+%x SUB_ID
+%x SUB_VALUE
%x EXTCOND_MODE
%x NETWORK_MODE
%x LIST_VAL_MODE
%x ASSIGN_MODE
%x RLIMIT_MODE
+%x MOUNT_MODE
%x CHANGE_PROFILE_MODE
%x INCLUDE
@@ -262,7 +267,8 @@ LT_EQUAL <=
if ( !YY_CURRENT_BUFFER ) yyterminate();
}
-{VARIABLE_NAME}/{WS}*={WS}* {
+<INITIAL,MOUNT_MODE>{
+ {VARIABLE_NAME}/{WS}*= {
/* we match to the = in the lexer so that
* can switch scanner state. By the time
* the parser see the = it may be to late
@@ -274,8 +280,9 @@ LT_EQUAL <=
yy_push_state(EXTCOND_MODE);
return TOK_CONDID;
}
+}
-<SUB_NAME>{
+<SUB_ID>{
({IDS}|{QUOTED_ID}) {
/* Ugh, this is a gross hack. I used to use
* {IDS} to match all TOK_IDs, but that would
@@ -298,6 +305,29 @@ LT_EQUAL <=
}
}
+<SUB_VALUE>{
+ ({IDS}|{QUOTED_ID}) {
+ /* Ugh, this is a gross hack. I used to use
+ * {IDS} to match all TOK_IDs, but that would
+ * also match TOK_MODE + TOK_END_OF_RULE
+ * without any spaces in between (because it's
+ * a longer match). So now, when I want to
+ * match any random string, I go into a
+ * separate state. */
+ DUMP_PREPROCESS;
+ yylval.id = processid(yytext, yyleng);
+ PDEBUG("Found sub value: \"%s\"\n", yylval.id);
+ yy_pop_state();
+ return TOK_VALUE;
+ }
+
+ [^\n] {
+ DUMP_PREPROCESS;
+ /* Something we didn't expect */
+ yyerror(_("Found unexpected character: '%s'"), yytext);
+ }
+}
+
<LIST_VAL_MODE>{
{CLOSE_PAREN} {
DUMP_PREPROCESS;
@@ -331,6 +361,12 @@ LT_EQUAL <=
<EXTCOND_MODE>{
{WS}+ { DUMP_PREPROCESS; /* Eat whitespace */ }
+ {EQUALS}{WS}*/[^(\n]{-}{WS} {
+ DUMP_PREPROCESS;
+ BEGIN(SUB_VALUE);
+ return TOK_EQUALS;
+ }
+
{EQUALS} {
DUMP_PREPROCESS;
return TOK_EQUALS;
@@ -342,7 +378,7 @@ LT_EQUAL <=
/* Don't push state here as this is a transition
* start condition and we want to return to the start
* condition that invoked <EXTCOND_MODE> when
- * SUB_NAME is done
+ * LIST_VAL_ID is done
*/
BEGIN(LIST_VAL_MODE);
return TOK_OPENPAREN;
@@ -351,7 +387,7 @@ LT_EQUAL <=
[^\n] {
DUMP_PREPROCESS;
/* Something we didn't expect */
- yyerror(_("Found unexpected character: '%s'"), yytext);
+ yyerror(_("Found unexpected character: '%s' %d"), yytext, *yytext);
}
}
@@ -481,6 +517,41 @@ LT_EQUAL <=
}
}
+<MOUNT_MODE>{
+ {WS}+ { DUMP_PREPROCESS; /* Ignoring whitespace */ }
+
+ {ARROW} {
+ DUMP_PREPROCESS;
+ PDEBUG("Matched arrow\n");
+ return TOK_ARROW;
+ }
+
+ ({IDS_NOEQ}|{PATHNAME}|{QUOTED_ID}) {
+ DUMP_PREPROCESS;
+ yylval.id = processid(yytext, yyleng);
+ PDEBUG("Found ID: \"%s\"\n", yylval.id);
+ return TOK_ID;
+ }
+
+ {END_OF_RULE} {
+ DUMP_PREPROCESS;
+ yy_pop_state();
+ return TOK_END_OF_RULE;
+ }
+
+ [^\n] {
+ DUMP_PREPROCESS;
+ /* Something we didn't expect */
+ yyerror(_("Found unexpected character: '%s'"), yytext);
+ }
+
+ \r?\n {
+ DUMP_PREPROCESS;
+ current_lineno++;
+ yy_pop_state();
+ }
+}
+
#include/.*\r?\n { /* include */
PDEBUG("Matched #include\n");
yy_push_state(INCLUDE);
@@ -497,7 +568,7 @@ LT_EQUAL <=
{CARET} {
DUMP_PREPROCESS;
PDEBUG("Matched hat ^\n");
- yy_push_state(SUB_NAME);
+ yy_push_state(SUB_ID);
return TOK_CARET;
}
{ARROW} {
@@ -558,13 +629,13 @@ LT_EQUAL <=
{HAT} {
DUMP_PREPROCESS;
- yy_push_state(SUB_NAME);
+ yy_push_state(SUB_ID);
return TOK_HAT;
}
{PROFILE} {
DUMP_PREPROCESS;
- yy_push_state(SUB_NAME);
+ yy_push_state(SUB_ID);
return TOK_PROFILE;
}
@@ -602,6 +673,13 @@ LT_EQUAL <=
case TOK_CHANGE_PROFILE:
yy_push_state(CHANGE_PROFILE_MODE);
break;
+ case TOK_MOUNT:
+ case TOK_REMOUNT:
+ case TOK_UMOUNT:
+ DUMP_PREPROCESS;
+ PDEBUG("Entering mount\n");
+ yy_push_state(MOUNT_MODE);
+ break;
default: /* nothing */
break;
}
diff --git a/parser/parser_misc.c b/parser/parser_misc.c
index f1779c7..ab79855 100644
--- a/parser/parser_misc.c
+++ b/parser/parser_misc.c
@@ -37,6 +37,7 @@
#include "parser.h"
#include "parser_yacc.h"
+#include "mount.h"
/* #define DEBUG */
#ifdef DEBUG
@@ -78,6 +79,11 @@ static struct keyword_table keyword_table[] = {
{"rewrite", TOK_ALIAS},
{"ptrace", TOK_PTRACE},
{"file", TOK_FILE},
+ {"mount", TOK_MOUNT},
+ {"remount", TOK_REMOUNT},
+ {"umount", TOK_UMOUNT},
+ {"unmount", TOK_UMOUNT},
+ {"pivotroot", TOK_PIVOTROOT},
/* terminate */
{NULL, 0}
};
@@ -776,6 +782,20 @@ void free_cod_entries(struct cod_entry *list)
free(list);
}
+void free_mnt_entries(struct mnt_entry *list)
+{
+ if (!list)
+ return;
+ if (list->next)
+ free_mnt_entries(list->next);
+ free(list->mnt_point);
+ free(list->device);
+ free_value_list(list->dev_type);
+ free_value_list(list->opts);
+
+ free(list);
+}
+
static void debug_base_perm_mask(int mask)
{
if (HAS_MAY_READ(mask))
@@ -960,6 +980,37 @@ void free_value_list(struct value_list *list)
}
}
+struct value_list *dup_value_list(struct value_list *list)
+{
+ struct value_list *entry, *dup, *head = NULL;
+ char *value;
+
+ list_for_each(list, entry) {
+ value = NULL;
+ if (list->value) {
+ value = strdup(list->value);
+ if (!value)
+ goto fail2;
+ }
+ dup = new_value_list(value);
+ if (!dup)
+ goto fail;
+ if (head)
+ list_append(head, dup);
+ else
+ head = dup;
+ }
+
+ return head;
+
+fail:
+ free(value);
+fail2:
+ free_value_list(head);
+
+ return NULL;
+}
+
void print_value_list(struct value_list *list)
{
struct value_list *entry;
@@ -974,6 +1025,35 @@ void print_value_list(struct value_list *list)
}
}
+struct cond_entry *new_cond_entry(char *name, struct value_list *list)
+{
+ struct cond_entry *ent = calloc(1, sizeof(struct cond_entry));
+ if (ent) {
+ ent->name = name;
+ ent->vals = list;
+ }
+
+ return ent;
+}
+
+void free_cond_entry(struct cond_entry *ent)
+{
+ if (ent) {
+ free(ent->name);
+ free_value_list(ent->vals);
+ free(ent);
+ }
+}
+
+void print_cond_entry(struct cond_entry *ent)
+{
+ if (ent) {
+ fprintf(stderr, "%s=(", ent->name);
+ print_value_list(ent->vals);
+ fprintf(stderr, ")\n");
+ }
+}
+
#ifdef UNIT_TEST
int test_str_to_boolean(void)
{
diff --git a/parser/parser_policy.c b/parser/parser_policy.c
index 0e4a853..3c0d31c 100644
--- a/parser/parser_policy.c
+++ b/parser/parser_policy.c
@@ -29,6 +29,7 @@
#define _(s) gettext(s)
#include "parser.h"
+#include "mount.h"
#include "parser_yacc.h"
/* #define DEBUG */
@@ -95,10 +96,26 @@ void add_hat_to_policy(struct codomain *cod, struct codomain *hat)
}
}
+static int add_entry_to_x_table(struct codomain *cod, char *name)
+{
+ int i;
+ for (i = (AA_EXEC_LOCAL >> 10) + 1; i < AA_EXEC_COUNT; i++) {
+ if (!cod->exec_table[i]) {
+ cod->exec_table[i] = name;
+ return i;
+ } else if (strcmp(cod->exec_table[i], name) == 0) {
+ /* name already in table */
+ free(name);
+ return i;
+ }
+ }
+ free(name);
+ return 0;
+}
+
static int add_named_transition(struct codomain *cod, struct cod_entry *entry)
{
char *name = NULL;
- int i;
/* check to see if it is a local transition */
if (!entry->namespace) {
@@ -146,18 +163,7 @@ static int add_named_transition(struct codomain *cod, struct cod_entry *entry)
name = entry->nt_name;
}
- for (i = (AA_EXEC_LOCAL >> 10) + 1; i < AA_EXEC_COUNT; i++) {
- if (!cod->exec_table[i]) {
- cod->exec_table[i] = name;
- return i;
- } else if (strcmp(cod->exec_table[i], name) == 0) {
- /* name already in table */
- free(name);
- return i;
- }
- }
- free(name);
- return 0;
+ return add_entry_to_x_table(cod, name);
}
void add_entry_to_policy(struct codomain *cod, struct cod_entry *entry)
@@ -175,7 +181,7 @@ void post_process_nt_entries(struct codomain *cod)
int mode = 0;
int n = add_named_transition(cod, entry);
if (!n) {
- PERROR("Profile %s has to many specified profile transitions.\n", cod->name);
+ PERROR("Profile %s has too many specified profile transitions.\n", cod->name);
exit(1);
}
if (entry->mode & AA_USER_EXEC)
@@ -190,6 +196,32 @@ void post_process_nt_entries(struct codomain *cod)
}
}
+void post_process_mnt_entries(struct codomain *cod)
+{
+ struct mnt_entry *entry;
+
+ list_for_each(cod->mnt_ents, entry) {
+ if (entry->trans) {
+ unsigned int mode = 0;
+ int n = add_entry_to_x_table(cod, entry->trans);
+ if (!n) {
+ PERROR("Profile %s has too many specified profile transitions.\n", cod->name);
+ exit(1);
+ }
+
+ if (entry->allow & AA_USER_EXEC)
+ mode |= SHIFT_MODE(n << 10, AA_USER_SHIFT);
+ if (entry->allow & AA_OTHER_EXEC)
+ mode |= SHIFT_MODE(n << 10, AA_OTHER_SHIFT);
+ entry->allow = ((entry->allow & ~AA_ALL_EXEC_MODIFIERS) |
+ (mode & AA_ALL_EXEC_MODIFIERS));
+
+ entry->trans = NULL;
+ }
+ }
+}
+
+
static void __merge_rules(const void *nodep, const VISIT value,
const int __unused depth)
{
@@ -763,6 +795,7 @@ void free_policy(struct codomain *cod)
return;
free_hat_table(cod->hat_table);
free_cod_entries(cod->entries);
+ free_mnt_entries(cod->mnt_ents);
if (cod->dfarules)
aare_delete_ruleset(cod->dfarules);
if (cod->dfa)
diff --git a/parser/parser_regex.c b/parser/parser_regex.c
index 50a5836..081f3e4 100644
--- a/parser/parser_regex.c
+++ b/parser/parser_regex.c
@@ -28,6 +28,8 @@
#include "parser.h"
#include "libapparmor_re/apparmor_re.h"
#include "libapparmor_re/aare_rules.h"
+#include "mount.h"
+#include "policydb.h"
enum error_type {
e_no_error,
@@ -611,12 +613,373 @@ out:
return error;
}
+static int build_list_val_expr(char *buffer, int size, struct value_list *list)
+{
+ struct value_list *ent;
+ char tmp[PATH_MAX + 3];
+ char *p;
+ int len;
+ pattern_t ptype;
+ int pos;
+
+ if (!list) {
+ strncpy(buffer, "[^\\000]*", size);
+ return TRUE;
+ }
+
+ p = buffer;
+ strncpy(p, "(", size - (p - buffer));
+ p++;
+ if (p > buffer + size)
+ goto fail;
+
+ ptype = convert_aaregex_to_pcre(list->value, 0, tmp, PATH_MAX+3, &pos);
+ if (ptype == ePatternInvalid)
+ goto fail;
+
+ len = strlen(tmp);
+ if (len > size - (p - buffer))
+ goto fail;
+ strcpy(p, tmp);
+ p += len;
+
+ list_for_each(list->next, ent) {
+ ptype = convert_aaregex_to_pcre(ent->value, 0, tmp,
+ PATH_MAX+3, &pos);
+ if (ptype == ePatternInvalid)
+ goto fail;
+
+ strncpy(p, "|", size - (p - buffer));
+ p++;
+ len = strlen(tmp);
+ if (len > size - (p - buffer))
+ goto fail;
+ strcpy(p, tmp);
+ p += len;
+ }
+ strncpy(p, ")", size - (p - buffer));
+ p++;
+ if (p > buffer + size)
+ goto fail;
+
+ return TRUE;
+fail:
+ return FALSE;
+}
+
+static int convert_entry(char *buffer, int size, char *entry)
+{
+ pattern_t ptype;
+ int pos;
+
+ if (entry) {
+ ptype = convert_aaregex_to_pcre(entry, 0, buffer, size, &pos);
+ if (ptype == ePatternInvalid)
+ return FALSE;
+ } else {
+ /* match any char except \000 0 or more times */
+ if (size < 8)
+ return FALSE;
+
+ strcpy(buffer, "[^\\000]*");
+ }
+ return TRUE;
+}
+
+static int build_mnt_flags(char *buffer, int size, unsigned int flags,
+ unsigned int inv_flags)
+{
+ char *p = buffer;
+ int i, len = 0;
+
+ if (flags == 0xffffffff) {
+ /* all flags are optional */
+ len = snprintf(p, size, "[^\\000]*");
+ if (len < 0 || len >= size)
+ return FALSE;
+ return TRUE;
+ }
+ for (i = 0; i <= 31; ++i) {
+ if ((flags & inv_flags) & (1 << i))
+ len = snprintf(p, size, "(\\x%02x|)", i + 1);
+ else if (flags & (1 << i))
+ len = snprintf(p, size, "\\x%02x", i + 1);
+ /* else no entry = not set */
+
+ if (len < 0 || len >= size)
+ return FALSE;
+ p += len;
+ size -= len;
+ }
+
+ if (buffer == p) {
+ /* match nothing - use impossible 254 as regex parser doesn't
+ * like the empty string
+ */
+ if (size < 9)
+ return FALSE;
+
+ strcpy(p, "(\\0xfe|)");
+ }
+
+ return TRUE;
+}
+
+static int build_mnt_opts(char *buffer, int size, struct value_list *opts)
+{
+ struct value_list *ent;
+ char tmp[PATH_MAX + 3];
+ char *p;
+ int len;
+ pattern_t ptype;
+ int pos;
+
+ if (!opts) {
+ if (size < 8)
+ return FALSE;
+ strncpy(buffer, "[^\\000]*", size);
+ return TRUE;
+ }
+
+ p = buffer;
+ list_for_each(opts, ent) {
+ ptype = convert_aaregex_to_pcre(ent->value, 0, tmp,
+ PATH_MAX+3, &pos);
+ if (ptype == ePatternInvalid)
+ goto fail;
+
+ len = strlen(tmp);
+ if (len > size - (p - buffer))
+ goto fail;
+ strcpy(p, tmp);
+ p += len;
+ if (ent->next && size - (p - buffer) > 1) {
+ *p++ = ',';
+ *p = 0;
+ }
+ }
+
+ return TRUE;
+
+fail:
+ return FALSE;
+}
+
+static int process_mnt_entry(aare_ruleset_t *dfarules, struct mnt_entry *entry)
+{
+ char mntbuf[PATH_MAX + 3];
+ char devbuf[PATH_MAX + 3];
+ char typebuf[PATH_MAX + 3];
+ char flagsbuf[PATH_MAX + 3];
+ char optsbuf[PATH_MAX + 3];
+ char *p, *vec[5];
+ int count = 0;
+
+ /* a single mount rule may result in multiple matching rules being
+ * created in the backend to cover all the possible choices
+ */
+
+ if ((entry->allow & AA_MAY_MOUNT) && (entry->flags & MS_REMOUNT)
+ && !entry->device && !entry->dev_type) {
+ /* remount is can't be conditional on device and type */
+ p = mntbuf;
+ /* rule class single byte header */
+ p += sprintf(p, "\\x%02x", AA_CLASS_MOUNT);
+ if (entry->mnt_point) {
+ /* both device && mnt_point or just mnt_point */
+ if (!convert_entry(p, PATH_MAX +3, entry->mnt_point))
+ goto fail;
+ vec[0] = mntbuf;
+ } else {
+ if (!convert_entry(p, PATH_MAX +3, entry->device))
+ goto fail;
+ vec[0] = mntbuf;
+ }
+ /* skip device */
+ if (!convert_entry(devbuf, PATH_MAX +3, NULL))
+ goto fail;
+ vec[1] = devbuf;
+ /* skip type */
+ vec[2] = devbuf;
+ if (!build_mnt_flags(flagsbuf, PATH_MAX,
+ entry->flags & MS_REMOUNT_FLAGS,
+ entry->inv_flags & MS_REMOUNT_FLAGS))
+ goto fail;
+ vec[3] = flagsbuf;
+ if (!build_mnt_opts(optsbuf, PATH_MAX, entry->opts))
+ goto fail;
+ vec[4] = optsbuf;
+ if (!aare_add_rule_vec(dfarules, entry->deny, entry->allow,
+ entry->audit, 5, vec, dfaflags))
+ goto fail;
+ count++;
+ }
+ if ((entry->allow & AA_MAY_MOUNT) && (entry->flags & MS_BIND)
+ && !entry->dev_type && !entry->opts) {
+ /* bind mount rules can't be conditional on dev_type or data */
+ p = mntbuf;
+ /* rule class single byte header */
+ p += sprintf(p, "\\x%02x", AA_CLASS_MOUNT);
+ if (!convert_entry(p, PATH_MAX +3, entry->mnt_point))
+ goto fail;
+ vec[0] = mntbuf;
+ if (!convert_entry(devbuf, PATH_MAX +3, entry->device))
+ goto fail;
+ vec[1] = devbuf;
+ if (!convert_entry(typebuf, PATH_MAX +3, NULL))
+ goto fail;
+ vec[2] = typebuf;
+ if (!build_mnt_flags(flagsbuf, PATH_MAX,
+ entry->flags & MS_BIND_FLAGS,
+ entry->inv_flags & MS_BIND_FLAGS))
+ goto fail;
+ vec[3] = flagsbuf;
+ if (!aare_add_rule_vec(dfarules, entry->deny, entry->allow,
+ entry->audit, 4, vec, dfaflags))
+ goto fail;
+ count++;
+ }
+ if ((entry->allow & AA_MAY_MOUNT) &&
+ (entry->flags & (MS_UNBINDABLE | MS_PRIVATE | MS_SLAVE | MS_SHARED))
+ && !entry->device && !entry->dev_type && !entry->opts) {
+ /* change type base rules can not be conditional on device,
+ * device type or data
+ */
+ p = mntbuf;
+ /* rule class single byte header */
+ p += sprintf(p, "\\x%02x", AA_CLASS_MOUNT);
+ if (!convert_entry(p, PATH_MAX +3, entry->mnt_point))
+ goto fail;
+ vec[0] = mntbuf;
+ /* skip device and type */
+ if (!convert_entry(devbuf, PATH_MAX +3, NULL))
+ goto fail;
+ vec[1] = devbuf;
+ vec[2] = devbuf;
+ if (!build_mnt_flags(flagsbuf, PATH_MAX,
+ entry->flags & MS_MAKE_FLAGS,
+ entry->inv_flags & MS_MAKE_FLAGS))
+ goto fail;
+ vec[3] = flagsbuf;
+ if (!aare_add_rule_vec(dfarules, entry->deny, entry->allow,
+ entry->audit, 4, vec, dfaflags))
+ goto fail;
+ count++;
+ }
+ if ((entry->allow & AA_MAY_MOUNT) && (entry->flags & MS_MOVE)
+ && !entry->dev_type && !entry->opts) {
+ /* mount move rules can not be conditional on dev_type,
+ * or data
+ */
+ p = mntbuf;
+ /* rule class single byte header */
+ p += sprintf(p, "\\x%02x", AA_CLASS_MOUNT);
+ if (!convert_entry(p, PATH_MAX +3, entry->mnt_point))
+ goto fail;
+ vec[0] = mntbuf;
+ if (!convert_entry(devbuf, PATH_MAX +3, entry->device))
+ goto fail;
+ vec[1] = devbuf;
+ /* skip type */
+ if (!convert_entry(typebuf, PATH_MAX +3, NULL))
+ goto fail;
+ vec[2] = typebuf;
+ if (!build_mnt_flags(flagsbuf, PATH_MAX,
+ entry->flags & MS_MOVE_FLAGS,
+ entry->inv_flags & MS_MOVE_FLAGS))
+ goto fail;
+ vec[3] = flagsbuf;
+ if (!aare_add_rule_vec(dfarules, entry->deny, entry->allow,
+ entry->audit, 4, vec, dfaflags))
+ goto fail;
+ count++;
+ }
+ if ((entry->allow & AA_MAY_MOUNT) &&
+ (entry->flags | entry->inv_flags) & ~MS_CMDS) {
+ /* generic mount if flags are set that are not covered by
+ * above commands
+ */
+ p = mntbuf;
+ /* rule class single byte header */
+ p += sprintf(p, "\\x%02x", AA_CLASS_MOUNT);
+ if (!convert_entry(p, PATH_MAX +3, entry->mnt_point))
+ goto fail;
+ vec[0] = mntbuf;
+ if (!convert_entry(devbuf, PATH_MAX +3, entry->device))
+ goto fail;
+ vec[1] = devbuf;
+ if (!build_list_val_expr(typebuf, PATH_MAX+2, entry->dev_type))
+ goto fail;
+ vec[2] = typebuf;
+ if (!build_mnt_flags(flagsbuf, PATH_MAX,
+ entry->flags & ~MS_CMDS,
+ entry->inv_flags & ~MS_CMDS))
+ goto fail;
+ vec[3] = flagsbuf;
+ if (!build_mnt_opts(optsbuf, PATH_MAX, entry->opts))
+ goto fail;
+ vec[4] = optsbuf;
+ if (!aare_add_rule_vec(dfarules, entry->deny, entry->allow,
+ entry->audit, 5, vec, dfaflags))
+ goto fail;
+ count++;
+ }
+ if (entry->allow & AA_MAY_UMOUNT) {
+ p = mntbuf;
+ /* rule class single byte header */
+ p += sprintf(p, "\\x%02x", AA_CLASS_MOUNT);
+ if (!convert_entry(p, PATH_MAX +3, entry->mnt_point))
+ goto fail;
+ vec[0] = mntbuf;
+ if (!aare_add_rule_vec(dfarules, entry->deny, entry->allow,
+ entry->audit, 1, vec, dfaflags))
+ goto fail;
+ count++;
+ }
+ if (entry->allow & AA_MAY_PIVOTROOT) {
+ p = mntbuf;
+ /* rule class single byte header */
+ p += sprintf(p, "\\x%02x", AA_CLASS_MOUNT);
+ if (!convert_entry(p, PATH_MAX +3, entry->mnt_point))
+ goto fail;
+ vec[0] = mntbuf;
+ if (!convert_entry(devbuf, PATH_MAX +3, entry->device))
+ goto fail;
+ vec[1] = devbuf;
+ if (!aare_add_rule_vec(dfarules, entry->deny, entry->allow,
+ entry->audit, 2, vec, dfaflags))
+ goto fail;
+ count++;
+ }
+
+ if (!count)
+ /* didn't actually encode anything */
+ goto fail;
+
+ return TRUE;
+
+fail:
+ PERROR("Enocoding of mount rule failed\n");
+ return FALSE;
+}
+
+
int post_process_policydb_ents(struct codomain *cod)
{
int ret = TRUE;
int count = 0;
/* Add fns for rules that should be added to policydb here */
+ if (cod->mnt_ents && kernel_supports_mount) {
+ struct mnt_entry *entry;
+ list_for_each(cod->mnt_ents, entry) {
+ if (regex_type == AARE_DFA &&
+ !process_mnt_entry(cod->policy_rules, entry))
+ ret = FALSE;
+ count++;
+ }
+ } else if (cod->mnt_ents && !kernel_supports_mount)
+ pwarn("profile %s mount rules not enforce\n", cod->name);
cod->policy_rule_count = count;
return ret;
@@ -631,6 +994,7 @@ int process_policydb(struct codomain *cod)
if (!cod->policy_rules)
goto out;
}
+
if (!post_process_policydb_ents(cod))
goto out;
@@ -644,6 +1008,7 @@ int process_policydb(struct codomain *cod)
goto out;
}
+ aare_reset_matchflags();
if (process_hat_policydb(cod) != 0)
goto out;
diff --git a/parser/parser_variable.c b/parser/parser_variable.c
index 1afae18..48f2fe7 100644
--- a/parser/parser_variable.c
+++ b/parser/parser_variable.c
@@ -28,6 +28,7 @@
/* #define DEBUG */
#include "parser.h"
+#include "mount.h"
static inline char *get_var_end(char *var)
{
@@ -130,17 +131,19 @@ void free_var_string(struct var_string *var)
free(var);
}
-static int expand_entry_variables(struct cod_entry *entry)
+/* doesn't handle variables in options atm */
+static int expand_entry_variables(char **name, void *entry,
+ int (dup_and_chain)(void *))
{
struct set_value *valuelist;
int ret = TRUE;
char *value;
struct var_string *split_var;
- if (!entry) /* shouldn't happen */
+ if (!entry) /* can happen when entry is optional */
return ret;
- while ((split_var = split_out_var(entry->name))) {
+ while ((split_var = split_out_var(*name))) {
valuelist = get_set_var(split_var->var);
if (!valuelist) {
int boolean = get_boolean_var(split_var->var);
@@ -159,24 +162,22 @@ static int expand_entry_variables(struct cod_entry *entry)
split_var->var);
exit(1);
}
- free(entry->name);
- if (asprintf(&(entry->name), "%s%s%s",
+ free(*name);
+ if (asprintf(name, "%s%s%s",
split_var->prefix ? split_var->prefix : "",
value,
split_var->suffix ? split_var->suffix : "") == -1)
return FALSE;
while ((value = get_next_set_value(&valuelist))) {
- struct cod_entry *dupe = copy_cod_entry(entry);
- if (!dupe) {
- PERROR("Memory allocaton error while handling set variable %s\n",
+ if (!dup_and_chain(entry)) {
+ PERROR("Memory allocation error while handling set variable %s\n",
split_var->var);
exit(1);
}
- entry->next = dupe;
- free(entry->name);
- if (asprintf(&(entry->name), "%s%s%s",
+ free(*name);
+ if (asprintf(name, "%s%s%s",
split_var->prefix ? split_var->prefix : "", value,
split_var->suffix ? split_var->suffix : "") == -1)
return FALSE;
@@ -187,15 +188,66 @@ static int expand_entry_variables(struct cod_entry *entry)
return ret;
}
+int clone_and_chain_cod(void *v)
+{
+ struct cod_entry *entry = v;
+ struct cod_entry *dup = copy_cod_entry(entry);
+ if (!dup)
+ return 0;
+
+ entry->next = dup;
+
+ return 1;
+}
+
+int clone_and_chain_mnt(void *v)
+{
+ struct mnt_entry *entry = v;
+
+ struct mnt_entry *dup = dup_mnt_entry(entry);
+ if (!dup)
+ return 0;
+
+ entry->next = dup;
+
+ return 1;
+}
+
static int process_variables_in_entries(struct cod_entry *entry_list)
{
int ret = TRUE, rc;
struct cod_entry *entry;
list_for_each(entry_list, entry) {
- rc = expand_entry_variables(entry);
+ rc = expand_entry_variables(&entry->name, entry,
+ clone_and_chain_cod);
if (!rc)
- ret = FALSE;
+ return FALSE;
+ }
+
+ return ret;
+}
+
+/* does not currently support expansion of vars in options */
+static int process_variables_in_mnt_entries(struct mnt_entry *entry_list)
+{
+ int ret = TRUE, rc;
+ struct mnt_entry *entry;
+
+ list_for_each(entry_list, entry) {
+ rc = expand_entry_variables(&entry->mnt_point, entry,
+ clone_and_chain_mnt);
+ if (!rc)
+ return FALSE;
+ rc = expand_entry_variables(&entry->device, entry,
+ clone_and_chain_mnt);
+ if (!rc)
+ return FALSE;
+ rc = expand_entry_variables(&entry->trans, entry,
+ clone_and_chain_mnt);
+ if (!rc)
+ return FALSE;
+
}
return ret;
@@ -209,6 +261,10 @@ int process_variables(struct codomain *cod)
error = -1;
}
+ if (!process_variables_in_mnt_entries(cod->mnt_ents)) {
+ error = -1;
+ }
+
if (process_hat_variables(cod) != 0) {
error = -1;
}
diff --git a/parser/parser_yacc.y b/parser/parser_yacc.y
index 9e05d24..07f1b41 100644
--- a/parser/parser_yacc.y
+++ b/parser/parser_yacc.y
@@ -32,6 +32,7 @@
/* #define DEBUG */
#include "parser.h"
+#include "mount.h"
#include "parser_include.h"
#include <unistd.h>
#include <netinet/in.h>
@@ -68,6 +69,11 @@ int parser_token = 0;
struct cod_entry *do_file_rule(char *namespace, char *id, int mode,
char *link_id, char *nt);
+struct mnt_entry *do_mnt_rule(struct cond_entry *src_conds, char *src,
+ struct cond_entry *dst_conds, char *dst,
+ int mode);
+struct mnt_entry *do_pivot_rule(struct cond_entry *old, char *root,
+ char *transition);
void add_local_entry(struct codomain *cod);
@@ -111,6 +117,10 @@ void add_local_entry(struct codomain *cod);
%token TOK_CLOSEPAREN
%token TOK_COMMA
%token TOK_FILE
+%token TOK_MOUNT
+%token TOK_REMOUNT
+%token TOK_UMOUNT
+%token TOK_PIVOTROOT
/* rlimits */
%token TOK_RLIMIT
@@ -146,6 +156,8 @@ void add_local_entry(struct codomain *cod);
struct codomain *cod;
struct cod_net_entry *net_entry;
struct cod_entry *user_entry;
+ struct mnt_entry *mnt_entry;
+
struct flagval flags;
int fmode;
uint64_t cap;
@@ -154,6 +166,7 @@ void add_local_entry(struct codomain *cod);
char *bool_var;
char *var_val;
struct value_list *val_list;
+ struct cond_entry *cond_entry;
int boolean;
struct named_transition transition;
}
@@ -175,6 +188,9 @@ void add_local_entry(struct codomain *cod);
%type <user_entry> link_rule
%type <user_entry> ptrace_rule
%type <user_entry> frule
+%type <mnt_entry> mnt_rule
+%type <cond_entry> opt_conds
+%type <cond_entry> cond
%type <flags> flags
%type <flags> flagvals
%type <flags> flagval
@@ -241,6 +257,7 @@ profile_base: TOK_ID opt_id flags TOK_OPEN rules TOK_CLOSE
cod->flags.complain = 1;
post_process_nt_entries(cod);
+ post_process_mnt_entries(cod);
PDEBUG("%s: flags='%s%s'\n",
$2,
cod->flags.complain ? "complain, " : "",
@@ -386,8 +403,8 @@ valuelist: valuelist TOK_VALUE
yyerror(_("Memory allocation error."));
PDEBUG("Matched: value list\n");
- val->next = $1;
- $$ = val;
+ list_append($1, val);
+ $$ = $1;
}
flags: { /* nothing */
@@ -647,6 +664,25 @@ rules: rules opt_audit_flag network_rule
$$ = $1;
}
+rules: rules opt_audit_flag TOK_DENY mnt_rule
+ {
+ $4->deny = $4->allow;
+ if ($2)
+ $4->audit = $4->allow;
+ $4->next = $1->mnt_ents;
+ $1->mnt_ents = $4;
+ $$ = $1;
+ }
+
+rules: rules opt_audit_flag mnt_rule
+ {
+ if ($2)
+ $3->audit = $3->allow;
+ $3->next = $1->mnt_ents;
+ $1->mnt_ents = $3;
+ $$ = $1;
+ }
+
rules: rules change_profile
{
PDEBUG("matched: rules change_profile\n");
@@ -1028,6 +1064,66 @@ network_rule: TOK_NETWORK TOK_ID TOK_ID TOK_END_OF_RULE
$$ = entry;
}
+cond: TOK_CONDID TOK_EQUALS TOK_VALUE
+ {
+ struct cond_entry *ent;
+ struct value_list *value = new_value_list($3);
+ if (!value)
+ yyerror(_("Memory allocation error."));
+ ent = new_cond_entry($1, value);
+ if (!ent) {
+ free_value_list(value);
+ yyerror(_("Memory allocation error."));
+ }
+ $$ = ent;
+ }
+
+cond: TOK_CONDID TOK_EQUALS TOK_OPENPAREN valuelist TOK_CLOSEPAREN
+ {
+ struct cond_entry *ent = new_cond_entry($1, $4);
+
+ if (!ent)
+ yyerror(_("Memory allocation error."));
+ $$ = ent;
+ }
+
+opt_conds: { /* nothing */ $$ = NULL; }
+ | opt_conds cond
+ {
+ $2->next = $1;
+ $$ = $2;
+ }
+
+mnt_rule: TOK_MOUNT opt_conds opt_id TOK_END_OF_RULE
+ {
+ $$ = do_mnt_rule($2, $3, NULL, NULL, AA_MAY_MOUNT);
+ }
+
+mnt_rule: TOK_MOUNT opt_conds opt_id TOK_ARROW opt_conds TOK_ID TOK_END_OF_RULE
+ {
+ $$ = do_mnt_rule($2, $3, $5, $6, AA_MAY_MOUNT);
+ }
+
+mnt_rule: TOK_REMOUNT opt_conds opt_id TOK_END_OF_RULE
+ {
+ $$ = do_mnt_rule($2, NULL, NULL, $3, AA_DUMMY_REMOUNT);
+ }
+
+mnt_rule: TOK_UMOUNT opt_conds opt_id TOK_END_OF_RULE
+ {
+ $$ = do_mnt_rule($2, NULL, NULL, $3, AA_MAY_UMOUNT);
+ }
+
+mnt_rule: TOK_PIVOTROOT opt_conds opt_id TOK_END_OF_RULE
+ {
+ $$ = do_pivot_rule($2, $3, NULL);
+ }
+
+mnt_rule: TOK_PIVOTROOT opt_conds opt_id TOK_ARROW TOK_ID TOK_END_OF_RULE
+ {
+ $$ = do_pivot_rule($2, $3, $5);
+ }
+
hat_start: TOK_CARET {}
| TOK_HAT {}
@@ -1084,14 +1180,11 @@ caps: { /* nothing */ $$ = 0; }
%%
#define MAXBUFSIZE 4096
-void yyerror(const char *msg, ...)
+void vprintyyerror(const char *msg, va_list argptr)
{
- va_list arg;
char buf[MAXBUFSIZE];
- va_start(arg, msg);
- vsnprintf(buf, sizeof(buf), msg, arg);
- va_end(arg);
+ vsnprintf(buf, sizeof(buf), msg, argptr);
if (profilename) {
PERROR(_("AppArmor parser error for %s%s%s at line %d: %s\n"),
@@ -1105,6 +1198,24 @@ void yyerror(const char *msg, ...)
current_filename ? current_filename : "",
current_lineno, buf);
}
+}
+
+void printyyerror(const char *msg, ...)
+{
+ va_list arg;
+
+ va_start(arg, msg);
+ vprintyyerror(msg, arg);
+ va_end(arg);
+}
+
+void yyerror(const char *msg, ...)
+{
+ va_list arg;
+
+ va_start(arg, msg);
+ vprintyyerror(msg, arg);
+ va_end(arg);
exit(1);
}
@@ -1146,3 +1257,74 @@ void add_local_entry(struct codomain *cod)
add_entry_to_policy(cod, entry);
}
}
+
+static char *mnt_cond_msg[] = {"",
+ " not allowed as source conditional",
+ " not allowed as target conditional",
+ "",
+ NULL};
+
+int verify_mnt_conds(struct cond_entry *conds, int src)
+{
+ struct cond_entry *entry;
+ int error = 0;
+
+ if (!conds)
+ return 0;
+
+ list_for_each(conds, entry) {
+ int res = is_valid_mnt_cond(entry->name, src);
+ if (res <= 0) {
+ printyyerror(_("invalid mount conditional %s%s"),
+ entry->name,
+ res == -1 ? "" : mnt_cond_msg[src]);
+ error++;
+ }
+ }
+
+ return error;
+}
+
+struct mnt_entry *do_mnt_rule(struct cond_entry *src_conds, char *src,
+ struct cond_entry *dst_conds, char *dst,
+ int mode)
+{
+ struct mnt_entry *ent;
+
+ if (verify_mnt_conds(src_conds, MNT_SRC_OPT) != 0)
+ yyerror(_("bad mount rule"));
+
+ /* FIXME: atm conditions are not supported on dst
+ if (verify_conds(dst_conds, DST_OPT) != 0)
+ yyerror(_("bad mount rule"));
+ */
+ if (dst_conds)
+ yyerror(_("mount point conditions not currently supported"));
+
+ ent = new_mnt_entry(src_conds, src, dst_conds, dst, mode);
+ if (!ent) {
+ yyerror(_("Memory allocation error."));
+ }
+
+ return ent;
+}
+
+struct mnt_entry *do_pivot_rule(struct cond_entry *old, char *root,
+ char *transition)
+{
+ struct mnt_entry *ent = NULL;
+
+ if (old) {
+ if (strcmp(old->name, "oldroot") != 0)
+ yyerror(_("invalid pivotroot conditional '%s'"), old->name);
+ }
+
+ ent = new_mnt_entry(NULL, old->vals->value, NULL, root,
+ AA_MAY_PIVOTROOT);
+ ent->trans = transition;
+
+ old->vals->value = NULL;
+ free_cond_entry(old);
+
+ return ent;
+}
diff --git a/parser/tst/simple_tests/mount/ok_1.sd b/parser/tst/simple_tests/mount/ok_1.sd
new file mode 100644
index 0000000..11eaded
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_1.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount,
+}
diff --git a/parser/tst/simple_tests/mount/ok_10.sd b/parser/tst/simple_tests/mount/ok_10.sd
new file mode 100644
index 0000000..bec51d7
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_10.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount fstype=(procfs) -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_11.sd b/parser/tst/simple_tests/mount/ok_11.sd
new file mode 100644
index 0000000..101dc84
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_11.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount fstype=(procfs, sysfs) -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_12.sd b/parser/tst/simple_tests/mount/ok_12.sd
new file mode 100644
index 0000000..e5508d5
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_12.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount fstype={procfs,sysfs} -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_14.sd b/parser/tst/simple_tests/mount/ok_14.sd
new file mode 100644
index 0000000..e3b0670
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_14.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount fstype=(procfs sysfs) none -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_15.sd b/parser/tst/simple_tests/mount/ok_15.sd
new file mode 100644
index 0000000..3b552f7
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_15.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount options=(rw) -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_16.sd b/parser/tst/simple_tests/mount/ok_16.sd
new file mode 100644
index 0000000..12c21aa
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_16.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount options=(rw, ro) -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_17.sd b/parser/tst/simple_tests/mount/ok_17.sd
new file mode 100644
index 0000000..08aa1bb
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_17.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount options=(rw ro) -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_18.sd b/parser/tst/simple_tests/mount/ok_18.sd
new file mode 100644
index 0000000..96a93a2
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_18.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount options=(rw ro) fstype=procfs -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_19.sd b/parser/tst/simple_tests/mount/ok_19.sd
new file mode 100644
index 0000000..c939849
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_19.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount options=(rw ro) fstype=(procfs) none -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_2.sd b/parser/tst/simple_tests/mount/ok_2.sd
new file mode 100644
index 0000000..06dbbfb
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_2.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_20.sd b/parser/tst/simple_tests/mount/ok_20.sd
new file mode 100644
index 0000000..f22ac8d
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_20.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount options=(bind) /bar -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_21.sd b/parser/tst/simple_tests/mount/ok_21.sd
new file mode 100644
index 0000000..b9634be
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_21.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount /bar -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_22.sd b/parser/tst/simple_tests/mount/ok_22.sd
new file mode 100644
index 0000000..799b873
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_22.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ remount /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_23.sd b/parser/tst/simple_tests/mount/ok_23.sd
new file mode 100644
index 0000000..96c3861
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_23.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ umount /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_3.sd b/parser/tst/simple_tests/mount/ok_3.sd
new file mode 100644
index 0000000..24605bf
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_3.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount /**,
+}
diff --git a/parser/tst/simple_tests/mount/ok_4.sd b/parser/tst/simple_tests/mount/ok_4.sd
new file mode 100644
index 0000000..8d92cfb
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_4.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount /{foo,bar},
+}
diff --git a/parser/tst/simple_tests/mount/ok_5.sd b/parser/tst/simple_tests/mount/ok_5.sd
new file mode 100644
index 0000000..fe5ab12
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_5.sd
@@ -0,0 +1,10 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+
+@{mntpnt}=/foo/bar
+
+/usr/bin/foo {
+ mount @{mntpnt},
+}
diff --git a/parser/tst/simple_tests/mount/ok_8.sd b/parser/tst/simple_tests/mount/ok_8.sd
new file mode 100644
index 0000000..c9f64ca
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_8.sd
@@ -0,0 +1,9 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+@{dev}=/one /two /three /four
+
+/usr/bin/foo {
+ mount @{dev} -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/ok_9.sd b/parser/tst/simple_tests/mount/ok_9.sd
new file mode 100644
index 0000000..7358139
--- /dev/null
+++ b/parser/tst/simple_tests/mount/ok_9.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount none -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/okay_13.sd b/parser/tst/simple_tests/mount/okay_13.sd
new file mode 100644
index 0000000..9255c74
--- /dev/null
+++ b/parser/tst/simple_tests/mount/okay_13.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount fstype=(procfs sysfs) -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/okay_6.sd b/parser/tst/simple_tests/mount/okay_6.sd
new file mode 100644
index 0000000..37d39c1
--- /dev/null
+++ b/parser/tst/simple_tests/mount/okay_6.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount /dev/bar -> /foo,
+}
diff --git a/parser/tst/simple_tests/mount/okay_7.sd b/parser/tst/simple_tests/mount/okay_7.sd
new file mode 100644
index 0000000..10ac4b0
--- /dev/null
+++ b/parser/tst/simple_tests/mount/okay_7.sd
@@ -0,0 +1,7 @@
+#
+#=Description basic mount rule
+#=EXRESULT PASS
+#
+/usr/bin/foo {
+ mount /dev/** -> /foo,
+}
--
1.7.9
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