Quoting Subrata Modak ([EMAIL PROTECTED]):
> > > Here is a patch to add some file capability tests to ltp.
> > >
> >
> > Thanks. I am running this and will get back to you soon.
> >
>
> I am not able to execute this through:
>
> ./runltp -f filecaps,
> On further investigation i found that "filecapstest.sh" is not present
> inside testcases/bin. Is some twiking needs to be done @:
>
> ltp-full-20071231/testcases/kernel/security/filecaps/Makefile
Ah, yes, until yesterday I didn't filecaps to be compiled by default
since it didn't have a check for existance of libcap. So I had to
add filecaps to subdirs in
ltp-full-20071231/testcases/kernel/security/Makefile.
A new diff is attached. It also has a two-line update for inh_capped.c,
which needed spaces added between two multi-line strings, which Andrew
pointed out.
thanks,
-serge
diff -Nrup ltp-full-20071231/runltp ltp-full-20071231-filecaps/runltp
--- ltp-full-20071231/runltp 2008-01-01 06:44:38.000000000 -0500
+++ ltp-full-20071231-filecaps/runltp 2008-01-21 08:34:20.000000000 -0500
@@ -487,7 +487,8 @@ main()
${LTPROOT}/runtest/mm ${LTPROOT}/runtest/ipc \
${LTPROOT}/runtest/sched ${LTPROOT}/runtest/math \
${LTPROOT}/runtest/nptl ${LTPROOT}/runtest/pty \
- ${LTPROOT}/runtest/containers
+ ${LTPROOT}/runtest/containers \
+ ${LTPROOT}/runtest/filecaps
do
[ -a "$SCENFILES" ] || \
{
diff -Nrup ltp-full-20071231/runtest/filecaps
ltp-full-20071231-filecaps/runtest/filecaps
--- ltp-full-20071231/runtest/filecaps 1969-12-31 19:00:00.000000000 -0500
+++ ltp-full-20071231-filecaps/runtest/filecaps 2008-01-21 08:34:20.000000000
-0500
@@ -0,0 +1,2 @@
+#DESCRIPTION:file capabilities
+Filecaps filecapstest.sh
diff -Nrup
ltp-full-20071231/testcases/kernel/security/filecaps/checkforfilecaps.sh
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/checkforfilecaps.sh
--- ltp-full-20071231/testcases/kernel/security/filecaps/checkforfilecaps.sh
1969-12-31 19:00:00.000000000 -0500
+++
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/checkforfilecaps.sh
2008-01-21 12:35:51.000000000 -0500
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+./check_simple_capset
+ret=$?
+if [ $ret -ne 0 ]; then
+ echo Posix capabilities not compiled into the kernel. Please
+ echo modprobe capability or recompile your kernel with
+ echo CONFIG_SECURITY_CAPABILITIES=y.
+fi
+
+touch testme
+setcap cap_sys_admin=ip testme
+ret=$?
+rm -f testme
+if [ $ret -ne 0 ]; then
+ echo File capabilities not compiled into kernel. Please
+ echo make sure your kernel is compiled with
+ echo CONFIG_SECURITY_FILE_CAPABILITIES=y.
+ exit 1
+fi
+
+exit 0
diff -Nrup
ltp-full-20071231/testcases/kernel/security/filecaps/checkforlibcap.sh
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/checkforlibcap.sh
--- ltp-full-20071231/testcases/kernel/security/filecaps/checkforlibcap.sh
1969-12-31 19:00:00.000000000 -0500
+++
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/checkforlibcap.sh
2008-01-21 12:31:32.000000000 -0500
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+SETCAP=`which setcap`
+ret=$?
+if [ $ret -eq 0 ]; then
+ #also test for -lcap
+ gcc -o check_simple_capset check_simple_capset.c -lcap
+ ret=$?
+fi
+
+if [ $ret -ne 0 ]; then
+ echo no
+ #echo setcap not installed. Please install libcap from
+ #echo ftp://ftp.kernel.org/pub/linux/libs/security/linux-privs/libcap2
+ #exit 1
+else
+ echo yes
+fi
diff -Nrup
ltp-full-20071231/testcases/kernel/security/filecaps/check_simple_capset.c
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/check_simple_capset.c
--- ltp-full-20071231/testcases/kernel/security/filecaps/check_simple_capset.c
1969-12-31 19:00:00.000000000 -0500
+++
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/check_simple_capset.c
2008-01-21 10:57:40.000000000 -0500
@@ -0,0 +1,14 @@
+#include <stdio.h>
+#include <sys/capability.h>
+
+int main()
+{
+ cap_t caps;
+ int ret;
+
+ caps = cap_from_text("cap_setpcap+ep");
+ ret = cap_set_proc(caps);
+
+ cap_free(caps);
+ return ret;
+}
diff -Nrup ltp-full-20071231/testcases/kernel/security/filecaps/filecapstest.sh
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/filecapstest.sh
--- ltp-full-20071231/testcases/kernel/security/filecaps/filecapstest.sh
1969-12-31 19:00:00.000000000 -0500
+++
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/filecapstest.sh
2008-01-21 11:41:11.000000000 -0500
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+echo "Running in:"
+cp $LTPROOT/testcases/bin/print_caps .
+mkfifo caps_fifo
+chmod 777 caps_fifo
+exit_code=0
+echo "cap_sys_admin tests"
+verify_caps_exec 0
+tmp=$?
+if [ $tmp -ne 0 ]; then
+ exit_code=$tmp
+fi
+
+echo "testing for correct caps"
+verify_caps_exec 1
+tmp=$?
+if [ $tmp -ne 0 ]; then
+ exit_code=$tmp
+fi
+
+echo "testing for correct pI checks"
+inh_capped
+tmp=$?
+if [ $tmp -ne 0 ]; then
+ exit_code=$tmp
+fi
+
+exit $exit_code
diff -Nrup ltp-full-20071231/testcases/kernel/security/filecaps/inh_capped.c
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/inh_capped.c
--- ltp-full-20071231/testcases/kernel/security/filecaps/inh_capped.c
1969-12-31 19:00:00.000000000 -0500
+++ ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/inh_capped.c
2008-01-22 09:14:30.000000000 -0500
@@ -0,0 +1,94 @@
+/*
+ * File: inh_capped
+ * Author: Serge Hallyn
+ * Copyright 2008 IBM Corp
+ * Purpose: test that CAP_SETPCAP is needed to add bits to pI
+ * Uses no command line arguments.
+ */
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <sys/capability.h>
+#include <test.h>
+
+char *TCID = "filecaps";
+int TST_TOTAL=1;
+
+#define DEBUG 1
+
+void debug_print_caps(char *when)
+{
+#ifdef DEBUG
+ char buf[2000];
+ tst_resm(TINFO, "%s", when);
+ snprintf(buf, 2000, "%s", cap_to_text(cap_get_proc(), NULL));
+ tst_resm(TINFO, "%s", buf);
+#endif
+}
+
+int set_caps_from_text(char *capstr)
+{
+ cap_t caps = cap_from_text(capstr);
+ int ret;
+
+ if (!caps) {
+ tst_resm(TFAIL, "Bad capability name: %s\n", capstr);
+ return 1;
+ }
+ ret = cap_set_proc(caps);
+ cap_free(caps);
+ return ret;
+}
+
+int main()
+{
+ int ret;
+
+ debug_print_caps("start");
+ ret = set_caps_from_text("all=eip");
+ debug_print_caps("after raising all caps");
+ if (ret) {
+ tst_resm(TFAIL, "failed to raise all caps");
+ tst_exit(ret);
+ }
+
+ ret = set_caps_from_text("all=iep cap_sys_admin-iep");
+ debug_print_caps("after first drop cap_sys_admin");
+ if (ret) {
+ tst_resm(TFAIL, "failed to drop capsysadmin from pI");
+ tst_exit(ret);
+ }
+
+ /* we can't regain cap_sys_admin in pE or pP, only pI */
+ ret = set_caps_from_text("all=eip cap_sys_admin-ep+i");
+ debug_print_caps("after first raise cap_sys_admin");
+ if (ret) {
+ tst_resm(TFAIL, "failed to raise capsysadmin in pI");
+ tst_exit(ret);
+ }
+
+ ret = set_caps_from_text("all=ip cap_setpcap-e+ip cap_sys_admin+i-ep");
+ debug_print_caps("after drop cappset");
+ if (ret) {
+ tst_resm(TFAIL, "failed to drop cappset from pE");
+ tst_exit(ret);
+ }
+
+ ret = set_caps_from_text("all=iep cap_sys_admin-iep cap_setpcap-e+ip");
+ debug_print_caps("after second drop cap_sys_admin");
+ if (ret) {
+ tst_resm(TFAIL, "failed to drop capsysadmin from pI "
+ "after dropping cappset from pE");
+ tst_exit(ret);
+ }
+
+ ret = set_caps_from_text("all=iep cap_sys_admin-ep+i cap_setpcap-e+ip");
+ debug_print_caps("final");
+ if (ret) {
+ tst_resm(TPASS, "pI is properly capped\n");
+ tst_exit(0);
+ }
+
+ tst_resm(TFAIL, "succeeded raising capsysadmin in pI "
+ "without having setpcap");
+ tst_exit(ret);
+}
diff -Nrup ltp-full-20071231/testcases/kernel/security/filecaps/Makefile
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/Makefile
--- ltp-full-20071231/testcases/kernel/security/filecaps/Makefile
1969-12-31 19:00:00.000000000 -0500
+++ ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/Makefile
2008-01-21 12:27:36.000000000 -0500
@@ -0,0 +1,22 @@
+ifeq ($(shell sh checkforlibcap.sh),yes)
+CC=gcc
+
+CFLAGS += -I../../../../include -Wall
+LDLIBS += -L../../../../lib -lltp -lcap
+
+SRCS = $(wildcard *.c)
+TARGETS = $(patsubst %.c,%,$(SRCS))
+
+all: $(TARGETS)
+
+clean:
+ rm -f $(TARGETS) *.o caps_fifo
+
+INSTALLTARGETS = $(TARGETS) filecapstest.sh
+
+install: $(INSTALLTARGETS)
+ @set -e; for i in $(INSTALLTARGETS); do ln -f $$i ../../../bin/$$i ;
chmod +x ../../../bin/$$i; done
+else
+all:
+install:
+endif
diff -Nrup ltp-full-20071231/testcases/kernel/security/filecaps/print_caps.c
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/print_caps.c
--- ltp-full-20071231/testcases/kernel/security/filecaps/print_caps.c
1969-12-31 19:00:00.000000000 -0500
+++ ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/print_caps.c
2008-01-21 11:04:32.000000000 -0500
@@ -0,0 +1,46 @@
+/*
+ * File: print_caps.c
+ * Author: Serge Hallyn
+ * Copyright 2007,2008 IBM Corp
+ * Purpose: print out the POSIX capabilities with which it runs
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/capability.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#define FIFOFILE "caps_fifo"
+
+int main(int argc, char *argv[])
+{
+ cap_t cap = cap_get_proc();
+ int fd;
+ int seqno = 0;
+ char buf[2000];
+
+ if (argc>1)
+ seqno = atoi(argv[1]);
+
+ if (!cap) {
+ perror("print_caps - cap_get_proc");
+ exit(1);
+ }
+
+ fd = open(FIFOFILE, O_WRONLY);
+ if (!fd) {
+ perror("print_caps: open fifo");
+ exit(2);
+ }
+
+ snprintf(buf, 2000, "%d.%s", seqno, cap_to_text(cap, NULL));
+ write(fd, buf, strlen(buf)+1);
+ close(fd);
+
+ cap_free(cap);
+
+ return 0;
+}
diff -Nrup ltp-full-20071231/testcases/kernel/security/filecaps/README
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/README
--- ltp-full-20071231/testcases/kernel/security/filecaps/README 1969-12-31
19:00:00.000000000 -0500
+++ ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/README
2008-01-21 11:07:08.000000000 -0500
@@ -0,0 +1,36 @@
+POSIX capabilities are pieces of root privilege, for instance
+CAP_SYS_NICE to set priority on other tasks and CAP_SYS_TIME
+to set system time. See
+http://www.kernel.org/pub/linux/libs/security/linux-privs/kernel-2.4/capfaq-0.2.txt
+for more information.
+
+A task's capabilities are set when it executes a new file, and
+when it explicitly changes them (see capset(2)). After exec,
+the task's new capabilities are a function of its previous
+capabilities and the file's capabilities:
+
+ pI' = pI
+ pP' = fP | (fI & pI)
+ pE' = fE ? pP' : 0
+
+Where pX is capability set X for process p before exec, pX' is
+capability set X for process P after exec and fX is file
+capability set X. The capability sets are I for inheritable,
+P for permitted, and E for effective. Note that fE is a
+boolean rather than a set.
+
+File capabilities are stored in extended attributes named
+'security.capability.' Setting this xattr requires the
+CAP_SETFCAP capability when the capability security module is
+loaded, or CAP_SYS_ADMIN when it is not.
+
+The following tests are implemented here:
+
+inh_capped: check whether a process without CAP_SETPCAP
+ is properly prohibited from raising bits in its
+ inheritable set using setcap.
+
+verify_caps_exec:
+ 1. check that privilege is needed to set file capabilities
+ 2. check that pI', pP', and pE' are properly
+ calculated upon exec.
diff -Nrup
ltp-full-20071231/testcases/kernel/security/filecaps/verify_caps_exec.c
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/verify_caps_exec.c
--- ltp-full-20071231/testcases/kernel/security/filecaps/verify_caps_exec.c
1969-12-31 19:00:00.000000000 -0500
+++
ltp-full-20071231-filecaps/testcases/kernel/security/filecaps/verify_caps_exec.c
2008-01-21 11:36:57.000000000 -0500
@@ -0,0 +1,421 @@
+/*
+ * File: verify_caps_exec.c
+ * Author: Serge Hallyn
+ * Copyright 2007,2008 IBM Corp
+ * Purpose: perform several tests of file capabilities:
+ * 1. try setting caps without CAP_SYS_ADMIN
+ * 2. test proper calculation of pI', pE', and pP'.
+ * Try setting valid caps, drop rights, and run the executable,
+ * make sure we get the rights
+ */
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <unistd.h>
+#include <endian.h>
+#include <byteswap.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <attr/xattr.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/capability.h>
+#include <sys/prctl.h>
+#include <test.h>
+
+#define TSTPATH "./print_caps"
+char *TCID = "filecaps";
+int TST_TOTAL=1;
+
+int errno;
+
+void usage(char *me)
+{
+ tst_resm(TFAIL, "Usage: %s <0|1> [arg]\n", me);
+ tst_resm(TINFO, " 0: set file caps without CAP_SYS_ADMIN\n");
+ tst_resm(TINFO, " 1: test that file caps are set correctly on exec\n");
+ tst_exit(1);
+}
+
+#define DROP_PERMS 0
+#define KEEP_PERMS 1
+
+void print_my_caps()
+{
+ cap_t cap = cap_get_proc();
+ tst_resm(TINFO, "\ncaps are %s\n", cap_to_text(cap, NULL));
+}
+
+int drop_root(int keep_perms)
+{
+ int ret;
+
+ if (keep_perms)
+ prctl(PR_SET_KEEPCAPS, 1);
+ ret = setresuid(1000, 1000, 1000);
+ if (ret) {
+ perror("setresuid");
+ tst_resm(TFAIL, "Error dropping root privs\n");
+ tst_exit(4);
+ }
+ if (keep_perms) {
+ cap_t cap = cap_from_text("=eip cap_setpcap-eip");
+ cap_set_proc(cap);
+ }
+
+ return 1;
+}
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define cpu_to_le32(x) x
+#else
+#define cpu_to_le32(x) bswap_32(x)
+#endif
+
+/*
+ * TODO: find a better way to do this. Emulate libcap's
+ * way, or just take it from linux/capability.h
+ */
+/*
+ * TODO: accomodate 64-bit capabilities
+ */
+#define CAPNAME "security.capability"
+#ifndef __CAP_BITS
+#define __CAP_BITS 31
+#endif
+
+#define XATTR_CAPS_SZ (3*sizeof(__le32))
+#define VFS_CAP_REVISION_MASK 0xFF000000
+#define VFS_CAP_REVISION 0x01000000
+
+#define VFS_CAP_FLAGS_MASK ~VFS_CAP_REVISION_MASK
+#define VFS_CAP_FLAGS_EFFECTIVE 0x000001
+
+int perms_test(void)
+{
+ int ret;
+ unsigned int value[3];
+ unsigned int v;
+
+ drop_root(DROP_PERMS);
+ v = VFS_CAP_REVISION | VFS_CAP_FLAGS_EFFECTIVE;
+ value[0] = cpu_to_le32(v);
+ value[1] = 1;
+ value[2] = 1;
+ ret = setxattr(TSTPATH, CAPNAME, value, 3*sizeof(unsigned int), 0);
+ if (ret) {
+ perror("setxattr");
+ tst_resm(TPASS, "could not set capabilities as non-root\n");
+ ret = 0;
+ } else {
+ tst_resm(TFAIL, "could set capabilities as non-root\n");
+ ret = 1;
+ }
+
+ return ret;
+}
+
+#define FIFOFILE "caps_fifo"
+void create_fifo(void)
+{
+ int ret;
+
+ ret = mkfifo(FIFOFILE, S_IRWXU | S_IRWXG | S_IRWXO);
+ if (ret == -1 && errno != EEXIST) {
+ perror("mkfifo");
+ tst_resm(TFAIL, "failed creating %s\n", FIFOFILE);
+ tst_exit(1);
+ }
+}
+
+void write_to_fifo(char *buf)
+{
+ int fd;
+
+ fd = open(FIFOFILE, O_WRONLY);
+ write(fd, buf, strlen(buf));
+ close(fd);
+}
+
+void read_from_fifo(char *buf)
+{
+ int fd;
+
+ memset(buf, 0, 200);
+ fd = open(FIFOFILE, O_RDONLY);
+ if (fd < 0) {
+ perror("open");
+ tst_resm(TFAIL, "Failed opening fifo\n");
+ tst_exit(1);
+ }
+ read(fd, buf, 199);
+ close(fd);
+}
+
+int compare_caps(char *buf1, char *buf2)
+{
+ int res;
+
+ res = strcmp(buf1, buf2) == 0;
+ return res;
+}
+
+int fork_drop_and_exec(int keepperms, char *capstxt)
+{
+ int pid;
+ int ret = 0;
+ char buf[200], *p;
+ static int seqno = 0;
+
+ pid = fork();
+ if (pid < 0) {
+ perror("fork");
+ tst_resm(TFAIL, "%s: failed fork\n", __FUNCTION__);
+ tst_exit(1);
+ }
+ if (pid == 0) {
+ drop_root(keepperms);
+ print_my_caps();
+ sprintf(buf, "%d", seqno);
+ ret = execlp(TSTPATH, TSTPATH, buf, NULL);
+ perror("execl");
+ tst_resm(TFAIL, "%s: exec failed\n", __FUNCTION__);
+ snprintf(buf, 200, "failed to run as %s\n", capstxt);
+ write_to_fifo(buf);
+ tst_exit(1);
+ } else {
+ p = buf;
+ while (1) {
+ int c, s;
+ read_from_fifo(buf);
+ c = sscanf(buf, "%d", &s);
+ if (c==1 && s==seqno)
+ break;
+ tst_resm(TINFO, "got a bad seqno (c=%d, s=%d,
seqno=%d)",
+ c, s, seqno);
+ }
+ p = index(buf, '.')+1;
+ if (p==(char *)1) {
+ tst_resm(TFAIL, "got a bad message from print_caps\n");
+ tst_exit(1);
+ }
+ tst_resm(TINFO, "Expected to run as .%s., ran as .%s..\n",
+ capstxt, p);
+ if (strcmp(p, capstxt) != 0) {
+ tst_resm(TINFO, "those are not the same\n");
+ ret = -1;
+ }
+ seqno++;
+ }
+ return ret;
+}
+
+int caps_actually_set_test(void)
+{
+ int i, whichset, whichcap, finalret = 0, ret;
+ cap_t cap;
+ char *capstxt;
+ unsigned int value[3];
+ cap_value_t capvalue[1];
+ unsigned int magic;
+
+ magic = VFS_CAP_REVISION;
+
+ cap = cap_init();
+ if (!cap) {
+ perror("cap_init");
+ exit(2);
+ }
+
+ create_fifo();
+
+ /* first, try each bit in fP (forced) with fE on and off. */
+ value[1] = value[2] = cpu_to_le32(0);
+ for (whichcap=0; whichcap < __CAP_BITS; whichcap++) {
+ if (whichcap == 8)
+ continue;
+ /* fE = 0, don't gain the perm */
+ capvalue[0] = whichcap;
+ value[0] = cpu_to_le32(magic);
+ value[1] = cpu_to_le32(1 << whichcap);
+ ret = setxattr(TSTPATH, CAPNAME, value, 3*sizeof(unsigned int),
0);
+ if (ret) {
+ tst_resm(TINFO, "%d %d\n", whichset, whichcap);
+ perror("setxattr");
+ continue;
+ }
+ /* do a sanity check */
+ cap_clear(cap);
+ cap_set_flag(cap, CAP_PERMITTED, 1, capvalue, CAP_SET);
+ capstxt = cap_to_text(cap, NULL);
+ ret = fork_drop_and_exec(DROP_PERMS, capstxt);
+ if (ret) {
+ tst_resm(TINFO, "Failed CAP_PERMITTED=%d
CAP_EFFECTIVE=0\n",
+ whichcap);
+ if (!finalret)
+ finalret = ret;
+ }
+
+ /* fE = 1, do gain the perm */
+ value[0] = cpu_to_le32(magic | VFS_CAP_FLAGS_EFFECTIVE);
+ value[1] = cpu_to_le32(1 << whichcap);
+ ret = setxattr(TSTPATH, CAPNAME, value, 3*sizeof(unsigned int),
0);
+ if (ret) {
+ tst_resm(TINFO, "%d %d\n", whichset, whichcap);
+ perror("setxattr");
+ continue;
+ }
+ /* do a sanity check */
+ cap_clear(cap);
+ cap_set_flag(cap, CAP_PERMITTED, 1, capvalue, CAP_SET);
+ cap_set_flag(cap, CAP_EFFECTIVE, 1, capvalue, CAP_SET);
+ capstxt = cap_to_text(cap, NULL);
+ if (strcmp(capstxt, "=")==0) {
+ tst_resm(TINFO, "%s: libcap doesn't know about cap %d,
not running\n",
+ __FUNCTION__, whichcap);
+ ret = 0;
+ } else
+ ret = fork_drop_and_exec(DROP_PERMS, capstxt);
+ if (ret) {
+ tst_resm(TINFO, "Failed CAP_PERMITTED=%d
CAP_EFFECTIVE=1\n",
+ whichcap);
+ if (!finalret)
+ finalret = ret;
+ }
+ }
+
+
+ /*
+ * next try each bit in fI
+ * The first two attemps have the bit which is in fI in pI.
+ * This should result in the bit being in pP'.
+ * If fE was set then it should also be in pE'.
+ * The last attempt starts with an empty pI.
+ * This should result in empty capability, as there were
+ * no bits to be inherited from the original process.
+ */
+ value[1] = value[2] = cpu_to_le32(0);
+ for (whichcap=0; whichcap < __CAP_BITS; whichcap++) {
+ if (whichcap == 8)
+ continue;
+ /*
+ * bit is in fI and pI, so should be in pI'.
+ * but fE=0, so cap is in pP' but not pE'.
+ */
+ value[0] = cpu_to_le32(magic);
+ value[2] = cpu_to_le32(1 << whichcap);
+ ret = setxattr(TSTPATH, CAPNAME, value, 3*sizeof(unsigned int),
0);
+ if (ret) {
+ tst_resm(TINFO, "%d %d\n", whichset, whichcap);
+ perror("setxattr");
+ continue;
+ }
+ /* do a sanity check */
+ cap_clear(cap);
+ for (i=0; i<32; i++) {
+ if (i != 8) {
+ capvalue[0] = i;
+ cap_set_flag(cap, CAP_INHERITABLE, 1, capvalue,
CAP_SET);
+ }
+ }
+ capvalue[0] = whichcap;
+ cap_set_flag(cap, CAP_PERMITTED, 1, capvalue, CAP_SET);
+ capstxt = cap_to_text(cap, NULL);
+ ret = fork_drop_and_exec(KEEP_PERMS, capstxt);
+ if (ret) {
+ tst_resm(TINFO, "Failed with_perms CAP_INHERITABLE=%d "
+ "CAP_EFFECTIVE=0\n", whichcap);
+ if (!finalret)
+ finalret = ret;
+ }
+
+ /*
+ * bit is in fI and pI, so should be in pI'.
+ * and fE=1, so cap is in pP' and pE'.
+ */
+
+ value[0] = cpu_to_le32(magic | VFS_CAP_FLAGS_EFFECTIVE);
+ value[2] = cpu_to_le32(1 << whichcap);
+ ret = setxattr(TSTPATH, CAPNAME, value, 3*sizeof(unsigned int),
0);
+ if (ret) {
+ tst_resm(TINFO, "%d %d\n", whichset, whichcap);
+ perror("setxattr");
+ continue;
+ }
+ /* do a sanity check */
+ cap_clear(cap);
+ for (i=0; i<32; i++) {
+ if (i != 8) {
+ capvalue[0] = i;
+ cap_set_flag(cap, CAP_INHERITABLE, 1, capvalue,
CAP_SET);
+ }
+ }
+ capvalue[0] = whichcap;
+ cap_set_flag(cap, CAP_PERMITTED, 1, capvalue, CAP_SET);
+ cap_set_flag(cap, CAP_EFFECTIVE, 1, capvalue, CAP_SET);
+ capstxt = cap_to_text(cap, NULL);
+ if (strcmp(capstxt, "=")==0) {
+ tst_resm(TINFO, "%s: libcap doesn't know about cap %d,
not running\n",
+ __FUNCTION__, whichcap);
+ ret = 0;
+ } else
+ ret = fork_drop_and_exec(KEEP_PERMS, capstxt);
+ if (ret) {
+ tst_resm(TINFO, "Failed with_perms CAP_INHERITABLE=%d "
+ "CAP_EFFECTIVE=1\n", whichcap);
+ if (!finalret)
+ finalret = ret;
+ }
+
+ /*
+ * bit is in fI but not in pI
+ * So pP' is empty.
+ * pE' must be empty.
+ */
+ value[0] = cpu_to_le32(magic | VFS_CAP_FLAGS_EFFECTIVE);
+ value[2] = cpu_to_le32(1 << whichcap);
+ ret = setxattr(TSTPATH, CAPNAME, value, 3*sizeof(unsigned int),
0);
+ if (ret) {
+ tst_resm(TINFO, "%d %d\n", whichset, whichcap);
+ perror("setxattr");
+ continue;
+ }
+ /* do a sanity check */
+ cap_clear(cap);
+ capstxt = cap_to_text(cap, NULL);
+ ret = fork_drop_and_exec(DROP_PERMS, capstxt);
+ if (ret) {
+ tst_resm(TINFO, "Failed without_perms
CAP_INHERITABLE=%d",
+ whichcap);
+ if (!finalret)
+ finalret = ret;
+ }
+ }
+
+ cap_free(cap);
+ return finalret;
+}
+
+int main(int argc, char *argv[])
+{
+ int ret = 0;
+
+ if (argc < 2)
+ usage(argv[0]);
+
+ switch(atoi(argv[1])) {
+ case 0:
+ ret = perms_test();
+ break;
+ case 1:
+ ret = caps_actually_set_test();
+ if (ret)
+ tst_resm(TFAIL, "Some tests failed\n");
+ else
+ tst_resm(TPASS, "All tests passed\n");
+ break;
+ default: usage(argv[0]);
+ }
+
+ tst_exit(ret);
+}
diff -Nrup ltp-full-20071231/testcases/kernel/security/Makefile
ltp-full-20071231-filecaps/testcases/kernel/security/Makefile
--- ltp-full-20071231/testcases/kernel/security/Makefile 2008-01-01
06:44:42.000000000 -0500
+++ ltp-full-20071231-filecaps/testcases/kernel/security/Makefile
2008-01-22 09:13:52.000000000 -0500
@@ -1,4 +1,4 @@
-SUBDIRS = mmc_security
+SUBDIRS = mmc_security filecaps
all:
@set -e; for i in $(SUBDIRS); do $(MAKE) -C $$i ; done
diff -Nrup ltp-full-20071231/testscripts/test_filecaps.sh
ltp-full-20071231-filecaps/testscripts/test_filecaps.sh
--- ltp-full-20071231/testscripts/test_filecaps.sh 1969-12-31
19:00:00.000000000 -0500
+++ ltp-full-20071231-filecaps/testscripts/test_filecaps.sh 2008-01-21
08:34:20.000000000 -0500
@@ -0,0 +1,47 @@
+#!/bin/bash
+#
+# Copyright 2007 IBM
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the Free
+# Software Foundation; either version 2 of the License, or (at your option)
+# any later version.
+#
+# test_filecaps.sh - Run the file capabilities test suite.
+
+# Must be root to run the containers testsuite
+if [ $UID != 0 ]
+then
+ echo "FAILED: Must be root to execute this script"
+ exit 1
+fi
+
+# set the LTPROOT directory
+cd `dirname $0`
+LTPROOT=${PWD}
+echo $LTPROOT | grep testscripts > /dev/null 2>&1
+if [ $? -eq 0 ]
+then
+ cd ..
+ LTPROOT=${PWD}
+fi
+
+# set the PATH to include testcase/bin
+
+export PATH=$PATH:/usr/sbin:$LTPROOT/testcases/bin
+export LTPBIN=$LTPROOT/testcases/bin
+
+# We will store the logfiles in $LTPROOT/results, so make sure
+# it exists.
+if [ ! -d $LTPROOT/results ]
+then
+ mkdir $LTPROOT/results
+fi
+
+# Check the role and mode testsuite is being executed under.
+echo "Running the file capabilities testsuite..."
+
+$LTPROOT/pan/pan -S -a $LTPROOT/results/filecaps -n ltp-filecaps -l
$LTPROOT/results/filecaps.logfile -o $LTPROOT/results/filecaps.outfile -p -f
$LTPROOT/runtest/filecaps
+
+echo "Done."
+exit 0
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