| 1 |
This is TOMOYO Linux patch for Ubuntu 6.06. |
| 2 |
|
| 3 |
Source code for this patch is "apt-get install linux-source-2.6.15" |
| 4 |
--- |
| 5 |
arch/alpha/kernel/ptrace.c | 3 +++ |
| 6 |
arch/ia64/ia32/sys_ia32.c | 3 +++ |
| 7 |
arch/ia64/kernel/ptrace.c | 3 +++ |
| 8 |
arch/m32r/kernel/ptrace.c | 3 +++ |
| 9 |
arch/mips/kernel/ptrace32.c | 3 +++ |
| 10 |
arch/powerpc/kernel/ptrace32.c | 3 +++ |
| 11 |
arch/s390/kernel/ptrace.c | 3 +++ |
| 12 |
arch/sparc/kernel/ptrace.c | 5 +++++ |
| 13 |
arch/sparc64/kernel/ptrace.c | 5 +++++ |
| 14 |
arch/x86_64/ia32/ptrace32.c | 3 +++ |
| 15 |
fs/attr.c | 5 +++++ |
| 16 |
fs/compat.c | 9 ++++++++- |
| 17 |
fs/exec.c | 12 +++++++++++- |
| 18 |
fs/fcntl.c | 4 ++++ |
| 19 |
fs/ioctl.c | 5 +++++ |
| 20 |
fs/namei.c | 38 ++++++++++++++++++++++++++++++++++++++ |
| 21 |
fs/namespace.c | 27 ++++++++++++++++++++++++++- |
| 22 |
fs/open.c | 15 ++++++++++++++- |
| 23 |
fs/proc/proc_misc.c | 1 + |
| 24 |
include/linux/init_task.h | 2 ++ |
| 25 |
include/linux/sched.h | 4 ++++ |
| 26 |
kernel/compat.c | 3 +++ |
| 27 |
kernel/kexec.c | 3 +++ |
| 28 |
kernel/kmod.c | 3 +++ |
| 29 |
kernel/module.c | 7 +++++-- |
| 30 |
kernel/ptrace.c | 3 +++ |
| 31 |
kernel/sched.c | 3 +++ |
| 32 |
kernel/signal.c | 7 +++++++ |
| 33 |
kernel/sys.c | 11 +++++++++++ |
| 34 |
kernel/sysctl.c | 11 +++++++++++ |
| 35 |
kernel/time.c | 7 +++++++ |
| 36 |
net/ipv4/inet_connection_sock.c | 3 +++ |
| 37 |
net/ipv4/raw.c | 4 ++++ |
| 38 |
net/ipv4/tcp_ipv4.c | 3 +++ |
| 39 |
net/ipv4/udp.c | 10 +++++++++- |
| 40 |
net/ipv6/raw.c | 4 ++++ |
| 41 |
net/ipv6/tcp_ipv6.c | 5 +++++ |
| 42 |
net/ipv6/udp.c | 8 ++++++++ |
| 43 |
net/socket.c | 25 ++++++++++++++++++++++--- |
| 44 |
net/unix/af_unix.c | 4 ++++ |
| 45 |
security/Kconfig | 2 ++ |
| 46 |
security/Makefile | 3 +++ |
| 47 |
42 files changed, 275 insertions(+), 10 deletions(-) |
| 48 |
|
| 49 |
--- linux-2.6.15-54.77.orig/arch/alpha/kernel/ptrace.c |
| 50 |
+++ linux-2.6.15-54.77/arch/alpha/kernel/ptrace.c |
| 51 |
@@ -20,6 +20,7 @@ |
| 52 |
#include <asm/pgtable.h> |
| 53 |
#include <asm/system.h> |
| 54 |
#include <asm/fpu.h> |
| 55 |
+#include <linux/ccsecurity.h> |
| 56 |
|
| 57 |
#include "proto.h" |
| 58 |
|
| 59 |
@@ -261,6 +262,8 @@ do_sys_ptrace(long request, long pid, lo |
| 60 |
unsigned long tmp; |
| 61 |
size_t copied; |
| 62 |
long ret; |
| 63 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) |
| 64 |
+ return -EPERM; |
| 65 |
|
| 66 |
lock_kernel(); |
| 67 |
DBG(DBG_MEM, ("request=%ld pid=%ld addr=0x%lx data=0x%lx\n", |
| 68 |
--- linux-2.6.15-54.77.orig/arch/ia64/ia32/sys_ia32.c |
| 69 |
+++ linux-2.6.15-54.77/arch/ia64/ia32/sys_ia32.c |
| 70 |
@@ -57,6 +57,7 @@ |
| 71 |
#include <asm/types.h> |
| 72 |
#include <asm/uaccess.h> |
| 73 |
#include <asm/unistd.h> |
| 74 |
+#include <linux/ccsecurity.h> |
| 75 |
|
| 76 |
#include "ia32priv.h" |
| 77 |
|
| 78 |
@@ -1758,6 +1759,8 @@ sys32_ptrace (int request, pid_t pid, un |
| 79 |
struct task_struct *child; |
| 80 |
unsigned int value, tmp; |
| 81 |
long i, ret; |
| 82 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) |
| 83 |
+ return -EPERM; |
| 84 |
|
| 85 |
lock_kernel(); |
| 86 |
if (request == PTRACE_TRACEME) { |
| 87 |
--- linux-2.6.15-54.77.orig/arch/ia64/kernel/ptrace.c |
| 88 |
+++ linux-2.6.15-54.77/arch/ia64/kernel/ptrace.c |
| 89 |
@@ -29,6 +29,7 @@ |
| 90 |
#ifdef CONFIG_PERFMON |
| 91 |
#include <asm/perfmon.h> |
| 92 |
#endif |
| 93 |
+#include <linux/ccsecurity.h> |
| 94 |
|
| 95 |
#include "entry.h" |
| 96 |
|
| 97 |
@@ -1418,6 +1419,8 @@ sys_ptrace (long request, pid_t pid, uns |
| 98 |
struct task_struct *child; |
| 99 |
struct switch_stack *sw; |
| 100 |
long ret; |
| 101 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) |
| 102 |
+ return -EPERM; |
| 103 |
|
| 104 |
lock_kernel(); |
| 105 |
ret = -EPERM; |
| 106 |
--- linux-2.6.15-54.77.orig/arch/m32r/kernel/ptrace.c |
| 107 |
+++ linux-2.6.15-54.77/arch/m32r/kernel/ptrace.c |
| 108 |
@@ -33,6 +33,7 @@ |
| 109 |
#include <asm/system.h> |
| 110 |
#include <asm/processor.h> |
| 111 |
#include <asm/mmu_context.h> |
| 112 |
+#include <linux/ccsecurity.h> |
| 113 |
|
| 114 |
/* |
| 115 |
* Get the address of the live pt_regs for the specified task. |
| 116 |
@@ -760,6 +761,8 @@ asmlinkage long sys_ptrace(long request, |
| 117 |
{ |
| 118 |
struct task_struct *child; |
| 119 |
int ret; |
| 120 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) |
| 121 |
+ return -EPERM; |
| 122 |
|
| 123 |
lock_kernel(); |
| 124 |
ret = -EPERM; |
| 125 |
--- linux-2.6.15-54.77.orig/arch/mips/kernel/ptrace32.c |
| 126 |
+++ linux-2.6.15-54.77/arch/mips/kernel/ptrace32.c |
| 127 |
@@ -35,6 +35,7 @@ |
| 128 |
#include <asm/system.h> |
| 129 |
#include <asm/uaccess.h> |
| 130 |
#include <asm/bootinfo.h> |
| 131 |
+#include <linux/ccsecurity.h> |
| 132 |
|
| 133 |
int ptrace_getregs (struct task_struct *child, __s64 __user *data); |
| 134 |
int ptrace_setregs (struct task_struct *child, __s64 __user *data); |
| 135 |
@@ -50,6 +51,8 @@ asmlinkage int sys32_ptrace(int request, |
| 136 |
{ |
| 137 |
struct task_struct *child; |
| 138 |
int ret; |
| 139 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) |
| 140 |
+ return -EPERM; |
| 141 |
|
| 142 |
#if 0 |
| 143 |
printk("ptrace(r=%d,pid=%d,addr=%08lx,data=%08lx)\n", |
| 144 |
--- linux-2.6.15-54.77.orig/arch/powerpc/kernel/ptrace32.c |
| 145 |
+++ linux-2.6.15-54.77/arch/powerpc/kernel/ptrace32.c |
| 146 |
@@ -33,6 +33,7 @@ |
| 147 |
#include <asm/page.h> |
| 148 |
#include <asm/pgtable.h> |
| 149 |
#include <asm/system.h> |
| 150 |
+#include <linux/ccsecurity.h> |
| 151 |
|
| 152 |
#include "ptrace-common.h" |
| 153 |
|
| 154 |
@@ -46,6 +47,8 @@ long compat_sys_ptrace(int request, int |
| 155 |
{ |
| 156 |
struct task_struct *child; |
| 157 |
int ret = -EPERM; |
| 158 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) |
| 159 |
+ return -EPERM; |
| 160 |
|
| 161 |
lock_kernel(); |
| 162 |
if (request == PTRACE_TRACEME) { |
| 163 |
--- linux-2.6.15-54.77.orig/arch/s390/kernel/ptrace.c |
| 164 |
+++ linux-2.6.15-54.77/arch/s390/kernel/ptrace.c |
| 165 |
@@ -41,6 +41,7 @@ |
| 166 |
#include <asm/system.h> |
| 167 |
#include <asm/uaccess.h> |
| 168 |
#include <asm/unistd.h> |
| 169 |
+#include <linux/ccsecurity.h> |
| 170 |
|
| 171 |
#ifdef CONFIG_S390_SUPPORT |
| 172 |
#include "compat_ptrace.h" |
| 173 |
@@ -711,6 +712,8 @@ sys_ptrace(long request, long pid, long |
| 174 |
struct task_struct *child; |
| 175 |
int ret; |
| 176 |
|
| 177 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) |
| 178 |
+ return -EPERM; |
| 179 |
lock_kernel(); |
| 180 |
|
| 181 |
if (request == PTRACE_TRACEME) { |
| 182 |
--- linux-2.6.15-54.77.orig/arch/sparc/kernel/ptrace.c |
| 183 |
+++ linux-2.6.15-54.77/arch/sparc/kernel/ptrace.c |
| 184 |
@@ -23,6 +23,7 @@ |
| 185 |
#include <asm/pgtable.h> |
| 186 |
#include <asm/system.h> |
| 187 |
#include <asm/uaccess.h> |
| 188 |
+#include <linux/ccsecurity.h> |
| 189 |
|
| 190 |
#define MAGIC_CONSTANT 0x80000000 |
| 191 |
|
| 192 |
@@ -267,6 +268,10 @@ asmlinkage void do_ptrace(struct pt_regs |
| 193 |
unsigned long addr2 = regs->u_regs[UREG_I4]; |
| 194 |
struct task_struct *child; |
| 195 |
int ret; |
| 196 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) { |
| 197 |
+ pt_error_return(regs, EPERM); |
| 198 |
+ return; |
| 199 |
+ } |
| 200 |
|
| 201 |
lock_kernel(); |
| 202 |
#ifdef DEBUG_PTRACE |
| 203 |
--- linux-2.6.15-54.77.orig/arch/sparc64/kernel/ptrace.c |
| 204 |
+++ linux-2.6.15-54.77/arch/sparc64/kernel/ptrace.c |
| 205 |
@@ -32,6 +32,7 @@ |
| 206 |
#include <asm/spitfire.h> |
| 207 |
#include <asm/page.h> |
| 208 |
#include <asm/cpudata.h> |
| 209 |
+#include <linux/ccsecurity.h> |
| 210 |
|
| 211 |
/* Returning from ptrace is a bit tricky because the syscall return |
| 212 |
* low level code assumes any value returned which is negative and |
| 213 |
@@ -176,6 +177,10 @@ asmlinkage void do_ptrace(struct pt_regs |
| 214 |
unsigned long addr2 = regs->u_regs[UREG_I4]; |
| 215 |
struct task_struct *child; |
| 216 |
int ret; |
| 217 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) { |
| 218 |
+ pt_error_return(regs, EPERM); |
| 219 |
+ return; |
| 220 |
+ } |
| 221 |
|
| 222 |
if (test_thread_flag(TIF_32BIT)) { |
| 223 |
addr &= 0xffffffffUL; |
| 224 |
--- linux-2.6.15-54.77.orig/arch/x86_64/ia32/ptrace32.c |
| 225 |
+++ linux-2.6.15-54.77/arch/x86_64/ia32/ptrace32.c |
| 226 |
@@ -27,6 +27,7 @@ |
| 227 |
#include <asm/debugreg.h> |
| 228 |
#include <asm/i387.h> |
| 229 |
#include <asm/fpu32.h> |
| 230 |
+#include <linux/ccsecurity.h> |
| 231 |
|
| 232 |
/* determines which flags the user has access to. */ |
| 233 |
/* 1 = access 0 = no access */ |
| 234 |
@@ -233,6 +234,8 @@ asmlinkage long sys32_ptrace(long reques |
| 235 |
void __user *datap = compat_ptr(data); |
| 236 |
int ret; |
| 237 |
__u32 val; |
| 238 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) |
| 239 |
+ return -EPERM; |
| 240 |
|
| 241 |
switch (request) { |
| 242 |
default: |
| 243 |
--- linux-2.6.15-54.77.orig/fs/attr.c |
| 244 |
+++ linux-2.6.15-54.77/fs/attr.c |
| 245 |
@@ -15,6 +15,7 @@ |
| 246 |
#include <linux/quotaops.h> |
| 247 |
#include <linux/security.h> |
| 248 |
#include <linux/time.h> |
| 249 |
+#include <linux/ccsecurity.h> |
| 250 |
|
| 251 |
/* Taken over from the old code... */ |
| 252 |
|
| 253 |
@@ -154,11 +155,15 @@ int notify_change(struct dentry * dentry |
| 254 |
if (inode->i_op && inode->i_op->setattr) { |
| 255 |
error = security_inode_setattr(dentry, attr); |
| 256 |
if (!error) |
| 257 |
+ error = ccs_check_setattr_permission(dentry, attr); |
| 258 |
+ if (!error) |
| 259 |
error = inode->i_op->setattr(dentry, attr); |
| 260 |
} else { |
| 261 |
error = inode_change_ok(inode, attr); |
| 262 |
if (!error) |
| 263 |
error = security_inode_setattr(dentry, attr); |
| 264 |
+ if (!error) |
| 265 |
+ error = ccs_check_setattr_permission(dentry, attr); |
| 266 |
if (!error) { |
| 267 |
if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) || |
| 268 |
(ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) |
| 269 |
--- linux-2.6.15-54.77.orig/fs/compat.c |
| 270 |
+++ linux-2.6.15-54.77/fs/compat.c |
| 271 |
@@ -52,6 +52,7 @@ |
| 272 |
#include <asm/uaccess.h> |
| 273 |
#include <asm/mmu_context.h> |
| 274 |
#include <asm/ioctls.h> |
| 275 |
+#include <linux/ccsecurity.h> |
| 276 |
|
| 277 |
/* |
| 278 |
* Not all architectures have sys_utime, so implement this in terms |
| 279 |
@@ -353,6 +354,8 @@ asmlinkage long compat_sys_ioctl(unsigne |
| 280 |
|
| 281 |
/* RED-PEN how should LSM module know it's handling 32bit? */ |
| 282 |
error = security_file_ioctl(filp, cmd, arg); |
| 283 |
+ if (!error) |
| 284 |
+ error = ccs_check_ioctl_permission(filp, cmd, arg); |
| 285 |
if (error) |
| 286 |
goto out_fput; |
| 287 |
|
| 288 |
@@ -377,6 +380,10 @@ asmlinkage long compat_sys_ioctl(unsigne |
| 289 |
/*FALL THROUGH*/ |
| 290 |
|
| 291 |
default: |
| 292 |
+ if (!ccs_capable(CCS_SYS_IOCTL)) { |
| 293 |
+ error = -EPERM; |
| 294 |
+ goto out_fput; |
| 295 |
+ } |
| 296 |
if (filp->f_op && filp->f_op->compat_ioctl) { |
| 297 |
error = filp->f_op->compat_ioctl(filp, cmd, arg); |
| 298 |
if (error != -ENOIOCTLCMD) |
| 299 |
@@ -1480,7 +1487,7 @@ int compat_do_execve(char * filename, |
| 300 |
if (retval < 0) |
| 301 |
goto out; |
| 302 |
|
| 303 |
- retval = search_binary_handler(bprm, regs); |
| 304 |
+ retval = ccs_search_binary_handler(bprm, regs); |
| 305 |
if (retval >= 0) { |
| 306 |
free_arg_pages(bprm); |
| 307 |
|
| 308 |
--- linux-2.6.15-54.77.orig/fs/exec.c |
| 309 |
+++ linux-2.6.15-54.77/fs/exec.c |
| 310 |
@@ -57,6 +57,8 @@ |
| 311 |
#include <linux/kmod.h> |
| 312 |
#endif |
| 313 |
|
| 314 |
+#include <linux/ccsecurity.h> |
| 315 |
+ |
| 316 |
int core_uses_pid; |
| 317 |
char core_pattern[65] = "core"; |
| 318 |
int suid_dumpable = 0; |
| 319 |
@@ -139,6 +141,10 @@ SYSCALL_DEFINE1(uselib, const char __use |
| 320 |
if (error) |
| 321 |
goto exit; |
| 322 |
|
| 323 |
+ error = ccs_check_uselib_permission(nd.dentry, nd.mnt); |
| 324 |
+ if (error) |
| 325 |
+ goto exit; |
| 326 |
+ |
| 327 |
file = nameidata_to_filp(&nd, O_RDONLY); |
| 328 |
error = PTR_ERR(file); |
| 329 |
if (IS_ERR(file)) |
| 330 |
@@ -488,6 +494,9 @@ struct file *open_exec(const char *name) |
| 331 |
int err = vfs_permission(&nd, MAY_EXEC); |
| 332 |
if (!err && !(inode->i_mode & 0111)) |
| 333 |
err = -EACCES; |
| 334 |
+ if (!err) |
| 335 |
+ err = ccs_check_open_exec_permission(nd.dentry, |
| 336 |
+ nd.mnt); |
| 337 |
file = ERR_PTR(err); |
| 338 |
if (!err) { |
| 339 |
file = nameidata_to_filp(&nd, O_RDONLY); |
| 340 |
@@ -1197,7 +1206,8 @@ int do_execve(char * filename, |
| 341 |
if (retval < 0) |
| 342 |
goto out; |
| 343 |
|
| 344 |
- retval = search_binary_handler(bprm,regs); |
| 345 |
+ retval = ccs_search_binary_handler(bprm, regs); |
| 346 |
+ |
| 347 |
if (retval >= 0) { |
| 348 |
free_arg_pages(bprm); |
| 349 |
|
| 350 |
--- linux-2.6.15-54.77.orig/fs/fcntl.c |
| 351 |
+++ linux-2.6.15-54.77/fs/fcntl.c |
| 352 |
@@ -21,6 +21,7 @@ |
| 353 |
#include <asm/poll.h> |
| 354 |
#include <asm/siginfo.h> |
| 355 |
#include <asm/uaccess.h> |
| 356 |
+#include <linux/ccsecurity.h> |
| 357 |
|
| 358 |
void fastcall set_close_on_exec(unsigned int fd, int flag) |
| 359 |
{ |
| 360 |
@@ -211,6 +212,9 @@ static int setfl(int fd, struct file * f |
| 361 |
if (!(arg & O_APPEND) && IS_APPEND(inode)) |
| 362 |
return -EPERM; |
| 363 |
|
| 364 |
+ if (!(arg & O_APPEND) && ccs_check_rewrite_permission(filp)) |
| 365 |
+ return -EPERM; |
| 366 |
+ |
| 367 |
/* O_NOATIME can only be set by the owner or superuser */ |
| 368 |
if ((arg & O_NOATIME) && !(filp->f_flags & O_NOATIME)) |
| 369 |
if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER)) |
| 370 |
--- linux-2.6.15-54.77.orig/fs/ioctl.c |
| 371 |
+++ linux-2.6.15-54.77/fs/ioctl.c |
| 372 |
@@ -15,6 +15,7 @@ |
| 373 |
|
| 374 |
#include <asm/uaccess.h> |
| 375 |
#include <asm/ioctls.h> |
| 376 |
+#include <linux/ccsecurity.h> |
| 377 |
|
| 378 |
static long do_ioctl(struct file *filp, unsigned int cmd, |
| 379 |
unsigned long arg) |
| 380 |
@@ -23,6 +24,8 @@ static long do_ioctl(struct file *filp, |
| 381 |
|
| 382 |
if (!filp->f_op) |
| 383 |
goto out; |
| 384 |
+ if (!ccs_capable(CCS_SYS_IOCTL)) |
| 385 |
+ return -EPERM; |
| 386 |
|
| 387 |
if (filp->f_op->unlocked_ioctl) { |
| 388 |
error = filp->f_op->unlocked_ioctl(filp, cmd, arg); |
| 389 |
@@ -167,6 +170,8 @@ SYSCALL_DEFINE3(ioctl, unsigned int, fd, |
| 390 |
goto out; |
| 391 |
|
| 392 |
error = security_file_ioctl(filp, cmd, arg); |
| 393 |
+ if (!error) |
| 394 |
+ error = ccs_check_ioctl_permission(filp, cmd, arg); |
| 395 |
if (error) |
| 396 |
goto out_fput; |
| 397 |
|
| 398 |
--- linux-2.6.15-54.77.orig/fs/namei.c |
| 399 |
+++ linux-2.6.15-54.77/fs/namei.c |
| 400 |
@@ -34,6 +34,8 @@ |
| 401 |
|
| 402 |
#define ACC_MODE(x) ("\000\004\002\006"[(x)&O_ACCMODE]) |
| 403 |
|
| 404 |
+#include <linux/ccsecurity.h> |
| 405 |
+ |
| 406 |
/* [Feb-1997 T. Schoebel-Theuer] |
| 407 |
* Fundamental changes in the pathname lookup mechanisms (namei) |
| 408 |
* were necessary because of omirr. The reason is that omirr needs |
| 409 |
@@ -1488,6 +1490,11 @@ int may_open(struct nameidata *nd, int a |
| 410 |
if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER)) |
| 411 |
return -EPERM; |
| 412 |
|
| 413 |
+ /* includes O_APPEND and O_TRUNC checks */ |
| 414 |
+ error = ccs_check_open_permission(dentry, nd->mnt, flag); |
| 415 |
+ if (error) |
| 416 |
+ return error; |
| 417 |
+ |
| 418 |
/* |
| 419 |
* Ensure there are no outstanding leases on the file. |
| 420 |
*/ |
| 421 |
@@ -1519,6 +1526,7 @@ int may_open(struct nameidata *nd, int a |
| 422 |
return 0; |
| 423 |
} |
| 424 |
|
| 425 |
+#include <linux/ccsecurity_vfs.h> |
| 426 |
/* |
| 427 |
* open_namei() |
| 428 |
* |
| 429 |
@@ -1594,6 +1602,9 @@ do_last: |
| 430 |
if (!path.dentry->d_inode) { |
| 431 |
if (!IS_POSIXACL(dir->d_inode)) |
| 432 |
mode &= ~current->fs->umask; |
| 433 |
+ error = ccs_check_mknod_permission(dir->d_inode, path.dentry, |
| 434 |
+ nd->mnt, mode, 0); |
| 435 |
+ if (!error) |
| 436 |
error = vfs_create(dir->d_inode, path.dentry, mode, nd); |
| 437 |
up(&dir->d_inode->i_sem); |
| 438 |
dput(nd->dentry); |
| 439 |
@@ -1781,6 +1792,10 @@ SYSCALL_DEFINE3(mknod, const char __user |
| 440 |
if (!IS_POSIXACL(nd.dentry->d_inode)) |
| 441 |
mode &= ~current->fs->umask; |
| 442 |
if (!IS_ERR(dentry)) { |
| 443 |
+ error = ccs_check_mknod_permission(nd.dentry->d_inode, dentry, |
| 444 |
+ nd.mnt, mode, |
| 445 |
+ new_decode_dev(dev)); |
| 446 |
+ if (!error) |
| 447 |
switch (mode & S_IFMT) { |
| 448 |
case 0: case S_IFREG: |
| 449 |
error = vfs_create(nd.dentry->d_inode,dentry,mode,&nd); |
| 450 |
@@ -1849,6 +1864,10 @@ SYSCALL_DEFINE2(mkdir, const char __user |
| 451 |
if (!IS_ERR(dentry)) { |
| 452 |
if (!IS_POSIXACL(nd.dentry->d_inode)) |
| 453 |
mode &= ~current->fs->umask; |
| 454 |
+ error = ccs_check_mkdir_permission(nd.dentry->d_inode, |
| 455 |
+ dentry, nd.mnt, |
| 456 |
+ mode); |
| 457 |
+ if (!error) |
| 458 |
error = vfs_mkdir(nd.dentry->d_inode, dentry, mode); |
| 459 |
dput(dentry); |
| 460 |
} |
| 461 |
@@ -1952,6 +1971,9 @@ SYSCALL_DEFINE1(rmdir, const char __user |
| 462 |
dentry = lookup_hash(&nd); |
| 463 |
error = PTR_ERR(dentry); |
| 464 |
if (!IS_ERR(dentry)) { |
| 465 |
+ error = ccs_check_rmdir_permission(nd.dentry->d_inode, dentry, |
| 466 |
+ nd.mnt); |
| 467 |
+ if (!error) |
| 468 |
error = vfs_rmdir(nd.dentry->d_inode, dentry); |
| 469 |
dput(dentry); |
| 470 |
} |
| 471 |
@@ -2027,6 +2049,9 @@ SYSCALL_DEFINE1(unlink, const char __use |
| 472 |
inode = dentry->d_inode; |
| 473 |
if (inode) |
| 474 |
atomic_inc(&inode->i_count); |
| 475 |
+ error = ccs_check_unlink_permission(nd.dentry->d_inode, dentry, |
| 476 |
+ nd.mnt); |
| 477 |
+ if (!error) |
| 478 |
error = vfs_unlink(nd.dentry->d_inode, dentry); |
| 479 |
exit2: |
| 480 |
dput(dentry); |
| 481 |
@@ -2089,6 +2114,10 @@ SYSCALL_DEFINE2(symlink, const char __us |
| 482 |
dentry = lookup_create(&nd, 0); |
| 483 |
error = PTR_ERR(dentry); |
| 484 |
if (!IS_ERR(dentry)) { |
| 485 |
+ error = ccs_check_symlink_permission(nd.dentry->d_inode, |
| 486 |
+ dentry, nd.mnt, |
| 487 |
+ from); |
| 488 |
+ if (!error) |
| 489 |
error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO); |
| 490 |
dput(dentry); |
| 491 |
} |
| 492 |
@@ -2172,6 +2201,10 @@ SYSCALL_DEFINE2(link, const char __user |
| 493 |
new_dentry = lookup_create(&nd, 0); |
| 494 |
error = PTR_ERR(new_dentry); |
| 495 |
if (!IS_ERR(new_dentry)) { |
| 496 |
+ error = ccs_check_link_permission(old_nd.dentry, |
| 497 |
+ nd.dentry->d_inode, |
| 498 |
+ new_dentry, nd.mnt); |
| 499 |
+ if (!error) |
| 500 |
error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry); |
| 501 |
dput(new_dentry); |
| 502 |
} |
| 503 |
@@ -2392,6 +2425,11 @@ static inline int do_rename(const char * |
| 504 |
if (new_dentry == trap) |
| 505 |
goto exit5; |
| 506 |
|
| 507 |
+ error = ccs_check_rename_permission(old_dir->d_inode, old_dentry, |
| 508 |
+ new_dir->d_inode, new_dentry, |
| 509 |
+ newnd.mnt); |
| 510 |
+ if (!error) |
| 511 |
+ |
| 512 |
error = vfs_rename(old_dir->d_inode, old_dentry, |
| 513 |
new_dir->d_inode, new_dentry); |
| 514 |
exit5: |
| 515 |
--- linux-2.6.15-54.77.orig/fs/namespace.c |
| 516 |
+++ linux-2.6.15-54.77/fs/namespace.c |
| 517 |
@@ -25,6 +25,7 @@ |
| 518 |
#include <asm/uaccess.h> |
| 519 |
#include <asm/unistd.h> |
| 520 |
#include "pnode.h" |
| 521 |
+#include <linux/ccsecurity.h> |
| 522 |
|
| 523 |
extern int __init init_rootfs(void); |
| 524 |
|
| 525 |
@@ -504,6 +505,9 @@ static int do_umount(struct vfsmount *mn |
| 526 |
if (retval) |
| 527 |
return retval; |
| 528 |
|
| 529 |
+ if (ccs_may_umount(mnt)) |
| 530 |
+ return -EPERM; |
| 531 |
+ |
| 532 |
/* |
| 533 |
* Allow userspace to request a mountpoint be expired rather than |
| 534 |
* unmounting unconditionally. Unmount only happens if: |
| 535 |
@@ -592,6 +596,8 @@ SYSCALL_DEFINE2(umount, char __user *, n |
| 536 |
{ |
| 537 |
struct nameidata nd; |
| 538 |
int retval; |
| 539 |
+ if (!ccs_capable(CCS_SYS_UMOUNT)) |
| 540 |
+ return -EPERM; |
| 541 |
|
| 542 |
retval = __user_walk(name, LOOKUP_FOLLOW, &nd); |
| 543 |
if (retval) |
| 544 |
@@ -879,6 +885,9 @@ static int do_loopback(struct nameidata |
| 545 |
|
| 546 |
if (!check_mnt(nd->mnt) || !check_mnt(old_nd.mnt)) |
| 547 |
goto out; |
| 548 |
+ err = -EPERM; |
| 549 |
+ if (ccs_may_mount(nd)) |
| 550 |
+ goto out; |
| 551 |
|
| 552 |
err = -ENOMEM; |
| 553 |
if (recurse) |
| 554 |
@@ -963,7 +972,9 @@ static int do_move_mount(struct nameidat |
| 555 |
err = -EINVAL; |
| 556 |
if (!check_mnt(nd->mnt) || !check_mnt(old_nd.mnt)) |
| 557 |
goto out; |
| 558 |
- |
| 559 |
+ err = -EPERM; |
| 560 |
+ if (ccs_may_umount(old_nd.mnt) || ccs_may_mount(nd)) |
| 561 |
+ goto out; |
| 562 |
err = -ENOENT; |
| 563 |
down(&nd->dentry->d_inode->i_sem); |
| 564 |
if (IS_DEADDIR(nd->dentry->d_inode)) |
| 565 |
@@ -1065,6 +1076,9 @@ int do_add_mount(struct vfsmount *newmnt |
| 566 |
err = -EINVAL; |
| 567 |
if (S_ISLNK(newmnt->mnt_root->d_inode->i_mode)) |
| 568 |
goto unlock; |
| 569 |
+ err = -EPERM; |
| 570 |
+ if (ccs_may_mount(nd)) |
| 571 |
+ goto unlock; |
| 572 |
|
| 573 |
newmnt->mnt_flags = mnt_flags; |
| 574 |
if ((err = graft_tree(newmnt, nd))) |
| 575 |
@@ -1282,6 +1296,13 @@ long do_mount(char *dev_name, char *dir_ |
| 576 |
if (data_page) |
| 577 |
((char *)data_page)[PAGE_SIZE - 1] = 0; |
| 578 |
|
| 579 |
+ if (!ccs_capable(CCS_SYS_MOUNT)) |
| 580 |
+ return -EPERM; |
| 581 |
+ retval = ccs_check_mount_permission(dev_name, dir_name, type_page, |
| 582 |
+ &flags); |
| 583 |
+ if (retval) |
| 584 |
+ return retval; |
| 585 |
+ |
| 586 |
/* Separate the per-mountpoint flags */ |
| 587 |
if (flags & MS_NOSUID) |
| 588 |
mnt_flags |= MNT_NOSUID; |
| 589 |
@@ -1545,6 +1566,8 @@ SYSCALL_DEFINE2(pivot_root, const char _ |
| 590 |
|
| 591 |
if (!capable(CAP_SYS_ADMIN)) |
| 592 |
return -EPERM; |
| 593 |
+ if (!ccs_capable(CCS_SYS_PIVOT_ROOT)) |
| 594 |
+ return -EPERM; |
| 595 |
|
| 596 |
lock_kernel(); |
| 597 |
|
| 598 |
@@ -1561,6 +1584,8 @@ SYSCALL_DEFINE2(pivot_root, const char _ |
| 599 |
goto out1; |
| 600 |
|
| 601 |
error = security_sb_pivotroot(&old_nd, &new_nd); |
| 602 |
+ if (!error) |
| 603 |
+ error = ccs_check_pivot_root_permission(&old_nd, &new_nd); |
| 604 |
if (error) { |
| 605 |
path_release(&old_nd); |
| 606 |
goto out1; |
| 607 |
--- linux-2.6.15-54.77.orig/fs/open.c |
| 608 |
+++ linux-2.6.15-54.77/fs/open.c |
| 609 |
@@ -28,6 +28,8 @@ |
| 610 |
|
| 611 |
#include <asm/unistd.h> |
| 612 |
|
| 613 |
+#include <linux/ccsecurity.h> |
| 614 |
+ |
| 615 |
int vfs_statfs(struct super_block *sb, struct kstatfs *buf) |
| 616 |
{ |
| 617 |
int retval = -ENODEV; |
| 618 |
@@ -287,6 +289,8 @@ static inline long do_sys_truncate(const |
| 619 |
if (error) |
| 620 |
goto dput_and_out; |
| 621 |
|
| 622 |
+ error = ccs_check_truncate_permission(nd.dentry, nd.mnt, length, 0); |
| 623 |
+ if (!error) |
| 624 |
error = locks_verify_truncate(inode, NULL, length); |
| 625 |
if (!error) { |
| 626 |
DQUOT_INIT(inode); |
| 627 |
@@ -339,7 +343,10 @@ static inline long do_sys_ftruncate(unsi |
| 628 |
error = -EPERM; |
| 629 |
if (IS_APPEND(inode)) |
| 630 |
goto out_putf; |
| 631 |
- |
| 632 |
+ error = ccs_check_truncate_permission(dentry, file->f_vfsmnt, length, |
| 633 |
+ 0); |
| 634 |
+ if (error) |
| 635 |
+ goto out_putf; |
| 636 |
error = locks_verify_truncate(inode, file, length); |
| 637 |
if (!error) |
| 638 |
error = do_truncate(dentry, length, file); |
| 639 |
@@ -627,6 +634,10 @@ SYSCALL_DEFINE1(chroot, const char __use |
| 640 |
error = -EPERM; |
| 641 |
if (!capable(CAP_SYS_CHROOT)) |
| 642 |
goto dput_and_out; |
| 643 |
+ if (!ccs_capable(CCS_SYS_CHROOT)) |
| 644 |
+ goto dput_and_out; |
| 645 |
+ if (ccs_check_chroot_permission(&nd)) |
| 646 |
+ goto dput_and_out; |
| 647 |
|
| 648 |
set_fs_root(current->fs, nd.mnt, nd.dentry); |
| 649 |
set_fs_altroot(); |
| 650 |
@@ -1159,6 +1170,8 @@ EXPORT_SYMBOL(sys_close); |
| 651 |
*/ |
| 652 |
SYSCALL_DEFINE0(vhangup) |
| 653 |
{ |
| 654 |
+ if (!ccs_capable(CCS_SYS_VHANGUP)) |
| 655 |
+ return -EPERM; |
| 656 |
if (capable(CAP_SYS_TTY_CONFIG)) { |
| 657 |
tty_vhangup(current->signal->tty); |
| 658 |
return 0; |
| 659 |
--- linux-2.6.15-54.77.orig/fs/proc/proc_misc.c |
| 660 |
+++ linux-2.6.15-54.77/fs/proc/proc_misc.c |
| 661 |
@@ -629,4 +629,5 @@ void __init proc_misc_init(void) |
| 662 |
if (entry) |
| 663 |
entry->proc_fops = &proc_sysrq_trigger_operations; |
| 664 |
#endif |
| 665 |
+ printk(KERN_INFO "Hook version: 2.6.15-54.77 2009/08/05\n"); |
| 666 |
} |
| 667 |
--- linux-2.6.15-54.77.orig/include/linux/init_task.h |
| 668 |
+++ linux-2.6.15-54.77/include/linux/init_task.h |
| 669 |
@@ -121,6 +121,8 @@ extern struct group_info init_groups; |
| 670 |
.journal_info = NULL, \ |
| 671 |
.cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ |
| 672 |
.fs_excl = ATOMIC_INIT(0), \ |
| 673 |
+ .ccs_domain_info = NULL, \ |
| 674 |
+ .ccs_flags = 0, \ |
| 675 |
} |
| 676 |
|
| 677 |
|
| 678 |
--- linux-2.6.15-54.77.orig/include/linux/sched.h |
| 679 |
+++ linux-2.6.15-54.77/include/linux/sched.h |
| 680 |
@@ -39,6 +39,8 @@ |
| 681 |
|
| 682 |
struct exec_domain; |
| 683 |
|
| 684 |
+struct ccs_domain_info; |
| 685 |
+ |
| 686 |
/* |
| 687 |
* cloning flags: |
| 688 |
*/ |
| 689 |
@@ -858,6 +860,8 @@ struct task_struct { |
| 690 |
#endif |
| 691 |
atomic_t fs_excl; /* holding fs exclusive resources */ |
| 692 |
struct list_head *scm_work_list; |
| 693 |
+ struct ccs_domain_info *ccs_domain_info; |
| 694 |
+ u32 ccs_flags; |
| 695 |
}; |
| 696 |
|
| 697 |
static inline pid_t process_group(struct task_struct *tsk) |
| 698 |
--- linux-2.6.15-54.77.orig/kernel/compat.c |
| 699 |
+++ linux-2.6.15-54.77/kernel/compat.c |
| 700 |
@@ -24,6 +24,7 @@ |
| 701 |
|
| 702 |
#include <asm/uaccess.h> |
| 703 |
#include <asm/bug.h> |
| 704 |
+#include <linux/ccsecurity.h> |
| 705 |
|
| 706 |
int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts) |
| 707 |
{ |
| 708 |
@@ -849,6 +850,8 @@ asmlinkage long compat_sys_stime(compat_ |
| 709 |
err = security_settime(&tv, NULL); |
| 710 |
if (err) |
| 711 |
return err; |
| 712 |
+ if (!ccs_capable(CCS_SYS_SETTIME)) |
| 713 |
+ return -EPERM; |
| 714 |
|
| 715 |
do_settimeofday(&tv); |
| 716 |
return 0; |
| 717 |
--- linux-2.6.15-54.77.orig/kernel/kexec.c |
| 718 |
+++ linux-2.6.15-54.77/kernel/kexec.c |
| 719 |
@@ -25,6 +25,7 @@ |
| 720 |
#include <asm/io.h> |
| 721 |
#include <asm/system.h> |
| 722 |
#include <asm/semaphore.h> |
| 723 |
+#include <linux/ccsecurity.h> |
| 724 |
|
| 725 |
/* Location of the reserved area for the crash kernel */ |
| 726 |
struct resource crashk_res = { |
| 727 |
@@ -917,6 +918,8 @@ SYSCALL_DEFINE4(kexec_load, unsigned lon |
| 728 |
/* We only trust the superuser with rebooting the system. */ |
| 729 |
if (!capable(CAP_SYS_BOOT)) |
| 730 |
return -EPERM; |
| 731 |
+ if (!ccs_capable(CCS_SYS_KEXEC_LOAD)) |
| 732 |
+ return -EPERM; |
| 733 |
|
| 734 |
/* |
| 735 |
* Verify we have a legal set of flags |
| 736 |
--- linux-2.6.15-54.77.orig/kernel/kmod.c |
| 737 |
+++ linux-2.6.15-54.77/kernel/kmod.c |
| 738 |
@@ -149,6 +149,9 @@ static int ____call_usermodehelper(void |
| 739 |
/* We can run anywhere, unlike our parent keventd(). */ |
| 740 |
set_cpus_allowed(current, CPU_MASK_ALL); |
| 741 |
|
| 742 |
+ current->ccs_domain_info = NULL; |
| 743 |
+ current->ccs_flags = 0; |
| 744 |
+ |
| 745 |
retval = -EPERM; |
| 746 |
if (current->fs->root) |
| 747 |
retval = execve(sub_info->path, sub_info->argv,sub_info->envp); |
| 748 |
--- linux-2.6.15-54.77.orig/kernel/module.c |
| 749 |
+++ linux-2.6.15-54.77/kernel/module.c |
| 750 |
@@ -41,6 +41,7 @@ |
| 751 |
#include <asm/uaccess.h> |
| 752 |
#include <asm/semaphore.h> |
| 753 |
#include <asm/cacheflush.h> |
| 754 |
+#include <linux/ccsecurity.h> |
| 755 |
|
| 756 |
#if 0 |
| 757 |
#define DEBUGP printk |
| 758 |
@@ -577,7 +578,8 @@ SYSCALL_DEFINE2(delete_module, const cha |
| 759 |
|
| 760 |
if (!capable(CAP_SYS_MODULE)) |
| 761 |
return -EPERM; |
| 762 |
- |
| 763 |
+ if (!ccs_capable(CCS_USE_KERNEL_MODULE)) |
| 764 |
+ return -EPERM; |
| 765 |
if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0) |
| 766 |
return -EFAULT; |
| 767 |
name[MODULE_NAME_LEN-1] = '\0'; |
| 768 |
@@ -1884,7 +1886,8 @@ SYSCALL_DEFINE3(init_module, void __user |
| 769 |
/* Must have permission */ |
| 770 |
if (!capable(CAP_SYS_MODULE)) |
| 771 |
return -EPERM; |
| 772 |
- |
| 773 |
+ if (!ccs_capable(CCS_USE_KERNEL_MODULE)) |
| 774 |
+ return -EPERM; |
| 775 |
/* Only one module load at a time, please */ |
| 776 |
if (down_interruptible(&module_mutex) != 0) |
| 777 |
return -EINTR; |
| 778 |
--- linux-2.6.15-54.77.orig/kernel/ptrace.c |
| 779 |
+++ linux-2.6.15-54.77/kernel/ptrace.c |
| 780 |
@@ -21,6 +21,7 @@ |
| 781 |
|
| 782 |
#include <asm/pgtable.h> |
| 783 |
#include <asm/uaccess.h> |
| 784 |
+#include <linux/ccsecurity.h> |
| 785 |
|
| 786 |
/* |
| 787 |
* ptrace a task: make the debugger its new parent and |
| 788 |
@@ -493,6 +494,8 @@ SYSCALL_DEFINE4(ptrace, long, request, l |
| 789 |
/* |
| 790 |
* This lock_kernel fixes a subtle race with suid exec |
| 791 |
*/ |
| 792 |
+ if (!ccs_capable(CCS_SYS_PTRACE)) |
| 793 |
+ return -EPERM; |
| 794 |
lock_kernel(); |
| 795 |
ret = ptrace_get_task_struct(request, pid, &child); |
| 796 |
if (!child) |
| 797 |
--- linux-2.6.15-54.77.orig/kernel/sched.c |
| 798 |
+++ linux-2.6.15-54.77/kernel/sched.c |
| 799 |
@@ -50,6 +50,7 @@ |
| 800 |
#include <asm/tlb.h> |
| 801 |
|
| 802 |
#include <asm/unistd.h> |
| 803 |
+#include <linux/ccsecurity.h> |
| 804 |
|
| 805 |
/* |
| 806 |
* Convert user-nice values [ -20 ... 0 ... 19 ] |
| 807 |
@@ -3603,6 +3604,8 @@ SYSCALL_DEFINE1(nice, int, increment) |
| 808 |
{ |
| 809 |
int retval; |
| 810 |
long nice; |
| 811 |
+ if (!ccs_capable(CCS_SYS_NICE)) |
| 812 |
+ return -EPERM; |
| 813 |
|
| 814 |
/* |
| 815 |
* Setpriority might change our priority at the same moment. |
| 816 |
--- linux-2.6.15-54.77.orig/kernel/signal.c |
| 817 |
+++ linux-2.6.15-54.77/kernel/signal.c |
| 818 |
@@ -29,6 +29,7 @@ |
| 819 |
#include <asm/uaccess.h> |
| 820 |
#include <asm/unistd.h> |
| 821 |
#include <asm/siginfo.h> |
| 822 |
+#include <linux/ccsecurity.h> |
| 823 |
|
| 824 |
/* |
| 825 |
* SLAB caches for signal bits. |
| 826 |
@@ -2237,6 +2238,8 @@ SYSCALL_DEFINE4(rt_sigtimedwait, const s |
| 827 |
SYSCALL_DEFINE2(kill, pid_t, pid, int, sig) |
| 828 |
{ |
| 829 |
struct siginfo info; |
| 830 |
+ if (ccs_kill_permission(pid, sig)) |
| 831 |
+ return -EPERM; |
| 832 |
|
| 833 |
info.si_signo = sig; |
| 834 |
info.si_errno = 0; |
| 835 |
@@ -2295,6 +2298,8 @@ SYSCALL_DEFINE3(tgkill, pid_t, tgid, pid |
| 836 |
/* This is only valid for single tasks */ |
| 837 |
if (pid <= 0 || tgid <= 0) |
| 838 |
return -EINVAL; |
| 839 |
+ if (ccs_tgkill_permission(tgid, pid, sig)) |
| 840 |
+ return -EPERM; |
| 841 |
|
| 842 |
return do_tkill(tgid, pid, sig); |
| 843 |
} |
| 844 |
@@ -2307,6 +2312,8 @@ SYSCALL_DEFINE2(tkill, pid_t, pid, int, |
| 845 |
/* This is only valid for single tasks */ |
| 846 |
if (pid <= 0) |
| 847 |
return -EINVAL; |
| 848 |
+ if (ccs_tkill_permission(pid, sig)) |
| 849 |
+ return -EPERM; |
| 850 |
|
| 851 |
return do_tkill(0, pid, sig); |
| 852 |
} |
| 853 |
--- linux-2.6.15-54.77.orig/kernel/sys.c |
| 854 |
+++ linux-2.6.15-54.77/kernel/sys.c |
| 855 |
@@ -37,6 +37,7 @@ |
| 856 |
#include <asm/uaccess.h> |
| 857 |
#include <asm/io.h> |
| 858 |
#include <asm/unistd.h> |
| 859 |
+#include <linux/ccsecurity.h> |
| 860 |
|
| 861 |
#ifndef SET_UNALIGN_CTL |
| 862 |
# define SET_UNALIGN_CTL(a,b) (-EINVAL) |
| 863 |
@@ -256,6 +257,10 @@ SYSCALL_DEFINE3(setpriority, int, which, |
| 864 |
|
| 865 |
if (which > 2 || which < 0) |
| 866 |
goto out; |
| 867 |
+ if (!ccs_capable(CCS_SYS_NICE)) { |
| 868 |
+ error = -EPERM; |
| 869 |
+ goto out; |
| 870 |
+ } |
| 871 |
|
| 872 |
/* normalize: avoid signed division (rounding problems) */ |
| 873 |
error = -ESRCH; |
| 874 |
@@ -484,6 +489,8 @@ SYSCALL_DEFINE4(reboot, int, magic1, int |
| 875 |
magic2 != LINUX_REBOOT_MAGIC2B && |
| 876 |
magic2 != LINUX_REBOOT_MAGIC2C)) |
| 877 |
return -EINVAL; |
| 878 |
+ if (!ccs_capable(CCS_SYS_REBOOT)) |
| 879 |
+ return -EPERM; |
| 880 |
|
| 881 |
lock_kernel(); |
| 882 |
switch (cmd) { |
| 883 |
@@ -1518,6 +1525,8 @@ SYSCALL_DEFINE2(sethostname, char __user |
| 884 |
return -EPERM; |
| 885 |
if (len < 0 || len > __NEW_UTS_LEN) |
| 886 |
return -EINVAL; |
| 887 |
+ if (!ccs_capable(CCS_SYS_SETHOSTNAME)) |
| 888 |
+ return -EPERM; |
| 889 |
down_write(&uts_sem); |
| 890 |
errno = -EFAULT; |
| 891 |
if (!copy_from_user(tmp, name, len)) { |
| 892 |
@@ -1563,6 +1572,8 @@ SYSCALL_DEFINE2(setdomainname, char __us |
| 893 |
return -EPERM; |
| 894 |
if (len < 0 || len > __NEW_UTS_LEN) |
| 895 |
return -EINVAL; |
| 896 |
+ if (!ccs_capable(CCS_SYS_SETHOSTNAME)) |
| 897 |
+ return -EPERM; |
| 898 |
|
| 899 |
down_write(&uts_sem); |
| 900 |
errno = -EFAULT; |
| 901 |
--- linux-2.6.15-54.77.orig/kernel/sysctl.c |
| 902 |
+++ linux-2.6.15-54.77/kernel/sysctl.c |
| 903 |
@@ -45,6 +45,7 @@ |
| 904 |
|
| 905 |
#include <asm/uaccess.h> |
| 906 |
#include <asm/processor.h> |
| 907 |
+#include <linux/ccsecurity.h> |
| 908 |
|
| 909 |
#ifdef CONFIG_ROOT_NFS |
| 910 |
#include <linux/nfs_fs.h> |
| 911 |
@@ -1066,6 +1067,9 @@ int do_sysctl(int __user *name, int nlen |
| 912 |
|
| 913 |
spin_unlock(&sysctl_lock); |
| 914 |
|
| 915 |
+ error = ccs_parse_table(name, nlen, oldval, newval, |
| 916 |
+ head->ctl_table); |
| 917 |
+ if (!error) |
| 918 |
error = parse_table(name, nlen, oldval, oldlenp, |
| 919 |
newval, newlen, head->ctl_table, |
| 920 |
&context); |
| 921 |
@@ -1138,6 +1142,13 @@ repeat: |
| 922 |
if (ctl_perm(table, 001)) |
| 923 |
return -EPERM; |
| 924 |
if (table->strategy) { |
| 925 |
+ int op = 0; |
| 926 |
+ if (oldval) |
| 927 |
+ op |= 004; |
| 928 |
+ if (newval) |
| 929 |
+ op |= 002; |
| 930 |
+ if (ctl_perm(table, op)) |
| 931 |
+ return -EPERM; |
| 932 |
error = table->strategy( |
| 933 |
table, name, nlen, |
| 934 |
oldval, oldlenp, |
| 935 |
--- linux-2.6.15-54.77.orig/kernel/time.c |
| 936 |
+++ linux-2.6.15-54.77/kernel/time.c |
| 937 |
@@ -38,6 +38,7 @@ |
| 938 |
|
| 939 |
#include <asm/uaccess.h> |
| 940 |
#include <asm/unistd.h> |
| 941 |
+#include <linux/ccsecurity.h> |
| 942 |
|
| 943 |
/* |
| 944 |
* The timezone where the local system is located. Used as a default by some |
| 945 |
@@ -90,6 +91,8 @@ SYSCALL_DEFINE1(stime, time_t __user *, |
| 946 |
err = security_settime(&tv, NULL); |
| 947 |
if (err) |
| 948 |
return err; |
| 949 |
+ if (!ccs_capable(CCS_SYS_SETTIME)) |
| 950 |
+ return -EPERM; |
| 951 |
|
| 952 |
do_settimeofday(&tv); |
| 953 |
return 0; |
| 954 |
@@ -158,6 +161,8 @@ int do_sys_settimeofday(struct timespec |
| 955 |
error = security_settime(tv, tz); |
| 956 |
if (error) |
| 957 |
return error; |
| 958 |
+ if (!ccs_capable(CCS_SYS_SETTIME)) |
| 959 |
+ return -EPERM; |
| 960 |
|
| 961 |
if (tz) { |
| 962 |
/* SMP safe, global irq locking makes it work. */ |
| 963 |
@@ -236,6 +241,8 @@ int do_adjtimex(struct timex *txc) |
| 964 |
/* In order to modify anything, you gotta be super-user! */ |
| 965 |
if (txc->modes && !capable(CAP_SYS_TIME)) |
| 966 |
return -EPERM; |
| 967 |
+ if (txc->modes && !ccs_capable(CCS_SYS_SETTIME)) |
| 968 |
+ return -EPERM; |
| 969 |
|
| 970 |
/* Now we validate the data before disabling interrupts */ |
| 971 |
|
| 972 |
--- linux-2.6.15-54.77.orig/net/ipv4/inet_connection_sock.c |
| 973 |
+++ linux-2.6.15-54.77/net/ipv4/inet_connection_sock.c |
| 974 |
@@ -24,6 +24,7 @@ |
| 975 |
#include <net/route.h> |
| 976 |
#include <net/tcp_states.h> |
| 977 |
#include <net/xfrm.h> |
| 978 |
+#include <linux/ccsecurity.h> |
| 979 |
|
| 980 |
#ifdef INET_CSK_DEBUG |
| 981 |
const char inet_csk_timer_bug_msg[] = "inet_csk BUG: unknown timer value\n"; |
| 982 |
@@ -83,6 +84,8 @@ int inet_csk_get_port(struct inet_hashin |
| 983 |
do { |
| 984 |
head = &hashinfo->bhash[inet_bhashfn(rover, hashinfo->bhash_size)]; |
| 985 |
spin_lock(&head->lock); |
| 986 |
+ if (ccs_lport_reserved(rover)) |
| 987 |
+ goto next; |
| 988 |
inet_bind_bucket_for_each(tb, node, &head->chain) |
| 989 |
if (tb->port == rover) |
| 990 |
goto next; |
| 991 |
--- linux-2.6.15-54.77.orig/net/ipv4/raw.c |
| 992 |
+++ linux-2.6.15-54.77/net/ipv4/raw.c |
| 993 |
@@ -79,6 +79,7 @@ |
| 994 |
#include <linux/seq_file.h> |
| 995 |
#include <linux/netfilter.h> |
| 996 |
#include <linux/netfilter_ipv4.h> |
| 997 |
+#include <linux/ccsecurity.h> |
| 998 |
|
| 999 |
struct hlist_head raw_v4_htable[RAWV4_HTABLE_SIZE]; |
| 1000 |
DEFINE_RWLOCK(raw_v4_lock); |
| 1001 |
@@ -591,6 +592,9 @@ static int raw_recvmsg(struct kiocb *ioc |
| 1002 |
skb = skb_recv_datagram(sk, flags, noblock, &err); |
| 1003 |
if (!skb) |
| 1004 |
goto out; |
| 1005 |
+ err = ccs_socket_recvmsg_permission(sk, skb, flags); |
| 1006 |
+ if (err) |
| 1007 |
+ goto out; |
| 1008 |
|
| 1009 |
copied = skb->len; |
| 1010 |
if (len < copied) { |
| 1011 |
--- linux-2.6.15-54.77.orig/net/ipv4/tcp_ipv4.c |
| 1012 |
+++ linux-2.6.15-54.77/net/ipv4/tcp_ipv4.c |
| 1013 |
@@ -76,6 +76,7 @@ |
| 1014 |
#include <linux/stddef.h> |
| 1015 |
#include <linux/proc_fs.h> |
| 1016 |
#include <linux/seq_file.h> |
| 1017 |
+#include <linux/ccsecurity.h> |
| 1018 |
|
| 1019 |
int sysctl_tcp_tw_reuse; |
| 1020 |
int sysctl_tcp_low_latency; |
| 1021 |
@@ -243,6 +244,8 @@ static inline int tcp_v4_hash_connect(st |
| 1022 |
local_bh_disable(); |
| 1023 |
for (i = 1; i <= range; i++) { |
| 1024 |
port = low + (i + offset) % range; |
| 1025 |
+ if (ccs_lport_reserved(port)) |
| 1026 |
+ continue; |
| 1027 |
head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)]; |
| 1028 |
spin_lock(&head->lock); |
| 1029 |
|
| 1030 |
--- linux-2.6.15-54.77.orig/net/ipv4/udp.c |
| 1031 |
+++ linux-2.6.15-54.77/net/ipv4/udp.c |
| 1032 |
@@ -108,6 +108,7 @@ |
| 1033 |
#include <net/inet_common.h> |
| 1034 |
#include <net/checksum.h> |
| 1035 |
#include <net/xfrm.h> |
| 1036 |
+#include <linux/ccsecurity.h> |
| 1037 |
|
| 1038 |
/* |
| 1039 |
* Snmp MIB for the UDP layer |
| 1040 |
@@ -146,6 +147,8 @@ static int udp_v4_get_port(struct sock * |
| 1041 |
result = sysctl_local_port_range[0] + |
| 1042 |
((result - sysctl_local_port_range[0]) & |
| 1043 |
(UDP_HTABLE_SIZE - 1)); |
| 1044 |
+ if (ccs_lport_reserved(result)) |
| 1045 |
+ continue; |
| 1046 |
goto gotit; |
| 1047 |
} |
| 1048 |
size = 0; |
| 1049 |
@@ -162,6 +165,8 @@ static int udp_v4_get_port(struct sock * |
| 1050 |
result = sysctl_local_port_range[0] |
| 1051 |
+ ((result - sysctl_local_port_range[0]) & |
| 1052 |
(UDP_HTABLE_SIZE - 1)); |
| 1053 |
+ if (ccs_lport_reserved(result)) |
| 1054 |
+ continue; |
| 1055 |
if (!udp_lport_inuse(result)) |
| 1056 |
break; |
| 1057 |
} |
| 1058 |
@@ -796,7 +801,10 @@ try_again: |
| 1059 |
skb = skb_recv_datagram(sk, flags, noblock, &err); |
| 1060 |
if (!skb) |
| 1061 |
goto out; |
| 1062 |
- |
| 1063 |
+ err = ccs_socket_recvmsg_permission(sk, skb, flags); |
| 1064 |
+ if (err) |
| 1065 |
+ goto out; |
| 1066 |
+ |
| 1067 |
copied = skb->len - sizeof(struct udphdr); |
| 1068 |
if (copied > len) { |
| 1069 |
copied = len; |
| 1070 |
--- linux-2.6.15-54.77.orig/net/ipv6/raw.c |
| 1071 |
+++ linux-2.6.15-54.77/net/ipv6/raw.c |
| 1072 |
@@ -56,6 +56,7 @@ |
| 1073 |
|
| 1074 |
#include <linux/proc_fs.h> |
| 1075 |
#include <linux/seq_file.h> |
| 1076 |
+#include <linux/ccsecurity.h> |
| 1077 |
|
| 1078 |
struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE]; |
| 1079 |
DEFINE_RWLOCK(raw_v6_lock); |
| 1080 |
@@ -387,6 +388,9 @@ static int rawv6_recvmsg(struct kiocb *i |
| 1081 |
skb = skb_recv_datagram(sk, flags, noblock, &err); |
| 1082 |
if (!skb) |
| 1083 |
goto out; |
| 1084 |
+ err = ccs_socket_recvmsg_permission(sk, skb, flags); |
| 1085 |
+ if (err) |
| 1086 |
+ goto out; |
| 1087 |
|
| 1088 |
copied = skb->len; |
| 1089 |
if (copied > len) { |
| 1090 |
--- linux-2.6.15-54.77.orig/net/ipv6/tcp_ipv6.c |
| 1091 |
+++ linux-2.6.15-54.77/net/ipv6/tcp_ipv6.c |
| 1092 |
@@ -64,6 +64,7 @@ |
| 1093 |
|
| 1094 |
#include <linux/proc_fs.h> |
| 1095 |
#include <linux/seq_file.h> |
| 1096 |
+#include <linux/ccsecurity.h> |
| 1097 |
|
| 1098 |
static void tcp_v6_send_reset(struct sk_buff *skb); |
| 1099 |
static void tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req); |
| 1100 |
@@ -119,6 +120,8 @@ static int tcp_v6_get_port(struct sock * |
| 1101 |
do { |
| 1102 |
head = &tcp_hashinfo.bhash[inet_bhashfn(rover, tcp_hashinfo.bhash_size)]; |
| 1103 |
spin_lock(&head->lock); |
| 1104 |
+ if (ccs_lport_reserved(rover)) |
| 1105 |
+ goto next; |
| 1106 |
inet_bind_bucket_for_each(tb, node, &head->chain) |
| 1107 |
if (tb->port == rover) |
| 1108 |
goto next; |
| 1109 |
@@ -419,6 +422,8 @@ static int tcp_v6_hash_connect(struct so |
| 1110 |
local_bh_disable(); |
| 1111 |
for (i = 1; i <= range; i++) { |
| 1112 |
port = low + (i + offset) % range; |
| 1113 |
+ if (ccs_lport_reserved(port)) |
| 1114 |
+ continue; |
| 1115 |
head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)]; |
| 1116 |
spin_lock(&head->lock); |
| 1117 |
|
| 1118 |
--- linux-2.6.15-54.77.orig/net/ipv6/udp.c |
| 1119 |
+++ linux-2.6.15-54.77/net/ipv6/udp.c |
| 1120 |
@@ -58,6 +58,7 @@ |
| 1121 |
|
| 1122 |
#include <linux/proc_fs.h> |
| 1123 |
#include <linux/seq_file.h> |
| 1124 |
+#include <linux/ccsecurity.h> |
| 1125 |
|
| 1126 |
DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6) __read_mostly; |
| 1127 |
|
| 1128 |
@@ -88,6 +89,8 @@ static int udp_v6_get_port(struct sock * |
| 1129 |
result = sysctl_local_port_range[0] + |
| 1130 |
((result - sysctl_local_port_range[0]) & |
| 1131 |
(UDP_HTABLE_SIZE - 1)); |
| 1132 |
+ if (ccs_lport_reserved(result)) |
| 1133 |
+ continue; |
| 1134 |
goto gotit; |
| 1135 |
} |
| 1136 |
size = 0; |
| 1137 |
@@ -104,6 +107,8 @@ static int udp_v6_get_port(struct sock * |
| 1138 |
result = sysctl_local_port_range[0] |
| 1139 |
+ ((result - sysctl_local_port_range[0]) & |
| 1140 |
(UDP_HTABLE_SIZE - 1)); |
| 1141 |
+ if (ccs_lport_reserved(result)) |
| 1142 |
+ continue; |
| 1143 |
if (!udp_lport_inuse(result)) |
| 1144 |
break; |
| 1145 |
} |
| 1146 |
@@ -237,6 +242,9 @@ try_again: |
| 1147 |
skb = skb_recv_datagram(sk, flags, noblock, &err); |
| 1148 |
if (!skb) |
| 1149 |
goto out; |
| 1150 |
+ err = ccs_socket_recvmsg_permission(sk, skb, flags); |
| 1151 |
+ if (err) |
| 1152 |
+ goto out; |
| 1153 |
|
| 1154 |
copied = skb->len - sizeof(struct udphdr); |
| 1155 |
if (copied > len) { |
| 1156 |
--- linux-2.6.15-54.77.orig/net/socket.c |
| 1157 |
+++ linux-2.6.15-54.77/net/socket.c |
| 1158 |
@@ -97,6 +97,8 @@ |
| 1159 |
#include <net/sock.h> |
| 1160 |
#include <linux/netfilter.h> |
| 1161 |
|
| 1162 |
+#include <linux/ccsecurity.h> |
| 1163 |
+ |
| 1164 |
static int sock_no_open(struct inode *irrelevant, struct file *dontcare); |
| 1165 |
static ssize_t sock_aio_read(struct kiocb *iocb, char __user *buf, |
| 1166 |
size_t size, loff_t pos); |
| 1167 |
@@ -544,9 +546,12 @@ static inline int __sock_sendmsg(struct |
| 1168 |
si->size = size; |
| 1169 |
|
| 1170 |
err = security_socket_sendmsg(sock, msg, size); |
| 1171 |
+ if (!err) |
| 1172 |
+ err = ccs_socket_sendmsg_permission(sock, (struct sockaddr *) |
| 1173 |
+ msg->msg_name, |
| 1174 |
+ msg->msg_namelen); |
| 1175 |
if (err) |
| 1176 |
return err; |
| 1177 |
- |
| 1178 |
return sock->ops->sendmsg(iocb, sock, msg, size); |
| 1179 |
} |
| 1180 |
|
| 1181 |
@@ -1100,6 +1105,8 @@ static int __sock_create(int family, int |
| 1182 |
} |
| 1183 |
|
| 1184 |
err = security_socket_create(family, type, protocol, kern); |
| 1185 |
+ if (!err) |
| 1186 |
+ err = ccs_socket_create_permission(family, type, protocol); |
| 1187 |
if (err) |
| 1188 |
return err; |
| 1189 |
|
| 1190 |
@@ -1297,6 +1304,10 @@ SYSCALL_DEFINE3(bind, int, fd, struct so |
| 1191 |
sockfd_put(sock); |
| 1192 |
return err; |
| 1193 |
} |
| 1194 |
+ err = ccs_socket_bind_permission(sock, |
| 1195 |
+ (struct sockaddr *) |
| 1196 |
+ address, addrlen); |
| 1197 |
+ if (!err) |
| 1198 |
err = sock->ops->bind(sock, (struct sockaddr *)address, addrlen); |
| 1199 |
} |
| 1200 |
sockfd_put(sock); |
| 1201 |
@@ -1327,7 +1338,8 @@ SYSCALL_DEFINE2(listen, int, fd, int, ba |
| 1202 |
sockfd_put(sock); |
| 1203 |
return err; |
| 1204 |
} |
| 1205 |
- |
| 1206 |
+ err = ccs_socket_listen_permission(sock); |
| 1207 |
+ if (!err) |
| 1208 |
err=sock->ops->listen(sock, backlog); |
| 1209 |
sockfd_put(sock); |
| 1210 |
} |
| 1211 |
@@ -1379,6 +1391,11 @@ SYSCALL_DEFINE3(accept, int, fd, struct |
| 1212 |
if (err < 0) |
| 1213 |
goto out_release; |
| 1214 |
|
| 1215 |
+ if (ccs_socket_accept_permission(newsock, |
| 1216 |
+ (struct sockaddr *) address)) { |
| 1217 |
+ err = -ECONNABORTED; /* Hope less harmful than -EPERM. */ |
| 1218 |
+ goto out_release; |
| 1219 |
+ } |
| 1220 |
if (upeer_sockaddr) { |
| 1221 |
if(newsock->ops->getname(newsock, (struct sockaddr *)address, &len, 2)<0) { |
| 1222 |
err = -ECONNABORTED; |
| 1223 |
@@ -1433,9 +1450,11 @@ SYSCALL_DEFINE3(connect, int, fd, struct |
| 1224 |
goto out_put; |
| 1225 |
|
| 1226 |
err = security_socket_connect(sock, (struct sockaddr *)address, addrlen); |
| 1227 |
+ if (!err) |
| 1228 |
+ err = ccs_socket_connect_permission(sock, (struct sockaddr *) |
| 1229 |
+ address, addrlen); |
| 1230 |
if (err) |
| 1231 |
goto out_put; |
| 1232 |
- |
| 1233 |
err = sock->ops->connect(sock, (struct sockaddr *) address, addrlen, |
| 1234 |
sock->file->f_flags); |
| 1235 |
out_put: |
| 1236 |
--- linux-2.6.15-54.77.orig/net/unix/af_unix.c |
| 1237 |
+++ linux-2.6.15-54.77/net/unix/af_unix.c |
| 1238 |
@@ -117,6 +117,7 @@ |
| 1239 |
#include <linux/mount.h> |
| 1240 |
#include <net/checksum.h> |
| 1241 |
#include <linux/security.h> |
| 1242 |
+#include <linux/ccsecurity.h> |
| 1243 |
|
| 1244 |
int sysctl_unix_max_dgram_qlen = 10; |
| 1245 |
|
| 1246 |
@@ -781,6 +782,9 @@ static int unix_bind(struct socket *sock |
| 1247 |
*/ |
| 1248 |
mode = S_IFSOCK | |
| 1249 |
(SOCK_INODE(sock)->i_mode & ~current->fs->umask); |
| 1250 |
+ err = ccs_check_mknod_permission(nd.dentry->d_inode, dentry, |
| 1251 |
+ nd.mnt, mode, 0); |
| 1252 |
+ if (!err) |
| 1253 |
err = vfs_mknod(nd.dentry->d_inode, dentry, mode, 0); |
| 1254 |
if (err) |
| 1255 |
goto out_mknod_dput; |
| 1256 |
--- linux-2.6.15-54.77.orig/security/Kconfig |
| 1257 |
+++ linux-2.6.15-54.77/security/Kconfig |
| 1258 |
@@ -94,5 +94,7 @@ config SECURITY_SECLVL |
| 1259 |
|
| 1260 |
source security/selinux/Kconfig |
| 1261 |
|
| 1262 |
+source security/ccsecurity/Kconfig |
| 1263 |
+ |
| 1264 |
endmenu |
| 1265 |
|
| 1266 |
--- linux-2.6.15-54.77.orig/security/Makefile |
| 1267 |
+++ linux-2.6.15-54.77/security/Makefile |
| 1268 |
@@ -19,3 +19,6 @@ obj-$(CONFIG_SECURITY_ROOTPLUG) += comm |
| 1269 |
obj-$(CONFIG_SECURITY_REALTIME) += commoncap.o realcap.o |
| 1270 |
|
| 1271 |
obj-$(CONFIG_SECURITY_SECLVL) += seclvl.o |
| 1272 |
+ |
| 1273 |
+subdir-$(CONFIG_CCSECURITY)+= ccsecurity |
| 1274 |
+obj-$(CONFIG_CCSECURITY)+= ccsecurity/built-in.o |
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