1 |
This is TOMOYO Linux patch for CAT-760. |
2 |
|
3 |
Source code for this patch is linux-2.6.15-cat_20080502.tgz |
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/compat.c | 9 ++++++++- |
16 |
fs/exec.c | 12 +++++++++++- |
17 |
fs/fcntl.c | 4 ++++ |
18 |
fs/ioctl.c | 3 +++ |
19 |
fs/namei.c | 31 +++++++++++++++++++++++++++++++ |
20 |
fs/namespace.c | 10 +++++++++- |
21 |
fs/open.c | 27 ++++++++++++++++++++++++++- |
22 |
fs/proc/proc_misc.c | 1 + |
23 |
include/linux/init_task.h | 9 +++++++++ |
24 |
include/linux/sched.h | 6 ++++++ |
25 |
kernel/compat.c | 3 +++ |
26 |
kernel/kexec.c | 3 +++ |
27 |
kernel/kmod.c | 5 +++++ |
28 |
kernel/module.c | 7 +++++-- |
29 |
kernel/ptrace.c | 3 +++ |
30 |
kernel/sched.c | 3 +++ |
31 |
kernel/signal.c | 9 +++++++++ |
32 |
kernel/sys.c | 11 +++++++++++ |
33 |
kernel/sysctl.c | 11 +++++++++++ |
34 |
kernel/time.c | 7 +++++++ |
35 |
net/ipv4/inet_connection_sock.c | 3 +++ |
36 |
net/ipv4/raw.c | 12 +++++++++--- |
37 |
net/ipv4/tcp_ipv4.c | 3 +++ |
38 |
net/ipv4/udp.c | 14 +++++++++++++- |
39 |
net/ipv6/raw.c | 12 +++++++++--- |
40 |
net/ipv6/tcp_ipv6.c | 5 +++++ |
41 |
net/ipv6/udp.c | 14 +++++++++++++- |
42 |
net/socket.c | 23 ++++++++++++++++++++--- |
43 |
net/unix/af_unix.c | 4 ++++ |
44 |
security/Kconfig | 2 ++ |
45 |
security/Makefile | 3 +++ |
46 |
41 files changed, 286 insertions(+), 17 deletions(-) |
47 |
|
48 |
--- linux-2.6.15-cat.orig/arch/alpha/kernel/ptrace.c |
49 |
+++ linux-2.6.15-cat/arch/alpha/kernel/ptrace.c |
50 |
@@ -20,6 +20,7 @@ |
51 |
#include <asm/pgtable.h> |
52 |
#include <asm/system.h> |
53 |
#include <asm/fpu.h> |
54 |
+#include <linux/ccsecurity.h> |
55 |
|
56 |
#include "proto.h" |
57 |
|
58 |
@@ -261,6 +262,8 @@ do_sys_ptrace(long request, long pid, lo |
59 |
unsigned long tmp; |
60 |
size_t copied; |
61 |
long ret; |
62 |
+ if (ccs_ptrace_permission(request, pid)) |
63 |
+ return -EPERM; |
64 |
|
65 |
lock_kernel(); |
66 |
DBG(DBG_MEM, ("request=%ld pid=%ld addr=0x%lx data=0x%lx\n", |
67 |
--- linux-2.6.15-cat.orig/arch/ia64/ia32/sys_ia32.c |
68 |
+++ linux-2.6.15-cat/arch/ia64/ia32/sys_ia32.c |
69 |
@@ -57,6 +57,7 @@ |
70 |
#include <asm/types.h> |
71 |
#include <asm/uaccess.h> |
72 |
#include <asm/unistd.h> |
73 |
+#include <linux/ccsecurity.h> |
74 |
|
75 |
#include "ia32priv.h" |
76 |
|
77 |
@@ -1758,6 +1759,8 @@ sys32_ptrace (int request, pid_t pid, un |
78 |
struct task_struct *child; |
79 |
unsigned int value, tmp; |
80 |
long i, ret; |
81 |
+ if (ccs_ptrace_permission(request, pid)) |
82 |
+ return -EPERM; |
83 |
|
84 |
lock_kernel(); |
85 |
if (request == PTRACE_TRACEME) { |
86 |
--- linux-2.6.15-cat.orig/arch/ia64/kernel/ptrace.c |
87 |
+++ linux-2.6.15-cat/arch/ia64/kernel/ptrace.c |
88 |
@@ -29,6 +29,7 @@ |
89 |
#ifdef CONFIG_PERFMON |
90 |
#include <asm/perfmon.h> |
91 |
#endif |
92 |
+#include <linux/ccsecurity.h> |
93 |
|
94 |
#include "entry.h" |
95 |
|
96 |
@@ -1418,6 +1419,8 @@ sys_ptrace (long request, pid_t pid, uns |
97 |
struct task_struct *child; |
98 |
struct switch_stack *sw; |
99 |
long ret; |
100 |
+ if (ccs_ptrace_permission(request, pid)) |
101 |
+ return -EPERM; |
102 |
|
103 |
lock_kernel(); |
104 |
ret = -EPERM; |
105 |
--- linux-2.6.15-cat.orig/arch/m32r/kernel/ptrace.c |
106 |
+++ linux-2.6.15-cat/arch/m32r/kernel/ptrace.c |
107 |
@@ -33,6 +33,7 @@ |
108 |
#include <asm/system.h> |
109 |
#include <asm/processor.h> |
110 |
#include <asm/mmu_context.h> |
111 |
+#include <linux/ccsecurity.h> |
112 |
|
113 |
/* |
114 |
* Get the address of the live pt_regs for the specified task. |
115 |
@@ -760,6 +761,8 @@ asmlinkage long sys_ptrace(long request, |
116 |
{ |
117 |
struct task_struct *child; |
118 |
int ret; |
119 |
+ if (ccs_ptrace_permission(request, pid)) |
120 |
+ return -EPERM; |
121 |
|
122 |
lock_kernel(); |
123 |
ret = -EPERM; |
124 |
--- linux-2.6.15-cat.orig/arch/mips/kernel/ptrace32.c |
125 |
+++ linux-2.6.15-cat/arch/mips/kernel/ptrace32.c |
126 |
@@ -35,6 +35,7 @@ |
127 |
#include <asm/system.h> |
128 |
#include <asm/uaccess.h> |
129 |
#include <asm/bootinfo.h> |
130 |
+#include <linux/ccsecurity.h> |
131 |
|
132 |
int ptrace_getregs (struct task_struct *child, __s64 __user *data); |
133 |
int ptrace_setregs (struct task_struct *child, __s64 __user *data); |
134 |
@@ -50,6 +51,8 @@ asmlinkage int sys32_ptrace(int request, |
135 |
{ |
136 |
struct task_struct *child; |
137 |
int ret; |
138 |
+ if (ccs_ptrace_permission(request, pid)) |
139 |
+ return -EPERM; |
140 |
|
141 |
#if 0 |
142 |
printk("ptrace(r=%d,pid=%d,addr=%08lx,data=%08lx)\n", |
143 |
--- linux-2.6.15-cat.orig/arch/powerpc/kernel/ptrace32.c |
144 |
+++ linux-2.6.15-cat/arch/powerpc/kernel/ptrace32.c |
145 |
@@ -33,6 +33,7 @@ |
146 |
#include <asm/page.h> |
147 |
#include <asm/pgtable.h> |
148 |
#include <asm/system.h> |
149 |
+#include <linux/ccsecurity.h> |
150 |
|
151 |
#include "ptrace-common.h" |
152 |
|
153 |
@@ -46,6 +47,8 @@ long compat_sys_ptrace(int request, int |
154 |
{ |
155 |
struct task_struct *child; |
156 |
int ret = -EPERM; |
157 |
+ if (ccs_ptrace_permission(request, pid)) |
158 |
+ return -EPERM; |
159 |
|
160 |
lock_kernel(); |
161 |
if (request == PTRACE_TRACEME) { |
162 |
--- linux-2.6.15-cat.orig/arch/s390/kernel/ptrace.c |
163 |
+++ linux-2.6.15-cat/arch/s390/kernel/ptrace.c |
164 |
@@ -41,6 +41,7 @@ |
165 |
#include <asm/system.h> |
166 |
#include <asm/uaccess.h> |
167 |
#include <asm/unistd.h> |
168 |
+#include <linux/ccsecurity.h> |
169 |
|
170 |
#ifdef CONFIG_S390_SUPPORT |
171 |
#include "compat_ptrace.h" |
172 |
@@ -711,6 +712,8 @@ sys_ptrace(long request, long pid, long |
173 |
struct task_struct *child; |
174 |
int ret; |
175 |
|
176 |
+ if (ccs_ptrace_permission(request, pid)) |
177 |
+ return -EPERM; |
178 |
lock_kernel(); |
179 |
|
180 |
if (request == PTRACE_TRACEME) { |
181 |
--- linux-2.6.15-cat.orig/arch/sparc/kernel/ptrace.c |
182 |
+++ linux-2.6.15-cat/arch/sparc/kernel/ptrace.c |
183 |
@@ -23,6 +23,7 @@ |
184 |
#include <asm/pgtable.h> |
185 |
#include <asm/system.h> |
186 |
#include <asm/uaccess.h> |
187 |
+#include <linux/ccsecurity.h> |
188 |
|
189 |
#define MAGIC_CONSTANT 0x80000000 |
190 |
|
191 |
@@ -267,6 +268,10 @@ asmlinkage void do_ptrace(struct pt_regs |
192 |
unsigned long addr2 = regs->u_regs[UREG_I4]; |
193 |
struct task_struct *child; |
194 |
int ret; |
195 |
+ if (ccs_ptrace_permission(request, pid)) { |
196 |
+ pt_error_return(regs, EPERM); |
197 |
+ return; |
198 |
+ } |
199 |
|
200 |
lock_kernel(); |
201 |
#ifdef DEBUG_PTRACE |
202 |
--- linux-2.6.15-cat.orig/arch/sparc64/kernel/ptrace.c |
203 |
+++ linux-2.6.15-cat/arch/sparc64/kernel/ptrace.c |
204 |
@@ -32,6 +32,7 @@ |
205 |
#include <asm/spitfire.h> |
206 |
#include <asm/page.h> |
207 |
#include <asm/cpudata.h> |
208 |
+#include <linux/ccsecurity.h> |
209 |
|
210 |
/* Returning from ptrace is a bit tricky because the syscall return |
211 |
* low level code assumes any value returned which is negative and |
212 |
@@ -173,6 +174,10 @@ asmlinkage void do_ptrace(struct pt_regs |
213 |
unsigned long addr2 = regs->u_regs[UREG_I4]; |
214 |
struct task_struct *child; |
215 |
int ret; |
216 |
+ if (ccs_ptrace_permission(request, pid)) { |
217 |
+ pt_error_return(regs, EPERM); |
218 |
+ return; |
219 |
+ } |
220 |
|
221 |
if (test_thread_flag(TIF_32BIT)) { |
222 |
addr &= 0xffffffffUL; |
223 |
--- linux-2.6.15-cat.orig/arch/x86_64/ia32/ptrace32.c |
224 |
+++ linux-2.6.15-cat/arch/x86_64/ia32/ptrace32.c |
225 |
@@ -27,6 +27,7 @@ |
226 |
#include <asm/debugreg.h> |
227 |
#include <asm/i387.h> |
228 |
#include <asm/fpu32.h> |
229 |
+#include <linux/ccsecurity.h> |
230 |
|
231 |
/* determines which flags the user has access to. */ |
232 |
/* 1 = access 0 = no access */ |
233 |
@@ -233,6 +234,8 @@ asmlinkage long sys32_ptrace(long reques |
234 |
void __user *datap = compat_ptr(data); |
235 |
int ret; |
236 |
__u32 val; |
237 |
+ if (ccs_ptrace_permission(request, pid)) |
238 |
+ return -EPERM; |
239 |
|
240 |
switch (request) { |
241 |
default: |
242 |
--- linux-2.6.15-cat.orig/fs/compat.c |
243 |
+++ linux-2.6.15-cat/fs/compat.c |
244 |
@@ -52,6 +52,7 @@ |
245 |
#include <asm/uaccess.h> |
246 |
#include <asm/mmu_context.h> |
247 |
#include <asm/ioctls.h> |
248 |
+#include <linux/ccsecurity.h> |
249 |
|
250 |
/* |
251 |
* Not all architectures have sys_utime, so implement this in terms |
252 |
@@ -353,6 +354,8 @@ asmlinkage long compat_sys_ioctl(unsigne |
253 |
|
254 |
/* RED-PEN how should LSM module know it's handling 32bit? */ |
255 |
error = security_file_ioctl(filp, cmd, arg); |
256 |
+ if (!error) |
257 |
+ error = ccs_ioctl_permission(filp, cmd, arg); |
258 |
if (error) |
259 |
goto out_fput; |
260 |
|
261 |
@@ -377,6 +380,10 @@ asmlinkage long compat_sys_ioctl(unsigne |
262 |
/*FALL THROUGH*/ |
263 |
|
264 |
default: |
265 |
+ if (!ccs_capable(CCS_SYS_IOCTL)) { |
266 |
+ error = -EPERM; |
267 |
+ goto out_fput; |
268 |
+ } |
269 |
if (filp->f_op && filp->f_op->compat_ioctl) { |
270 |
error = filp->f_op->compat_ioctl(filp, cmd, arg); |
271 |
if (error != -ENOIOCTLCMD) |
272 |
@@ -1476,7 +1483,7 @@ int compat_do_execve(char * filename, |
273 |
if (retval < 0) |
274 |
goto out; |
275 |
|
276 |
- retval = search_binary_handler(bprm, regs); |
277 |
+ retval = ccs_search_binary_handler(bprm, regs); |
278 |
if (retval >= 0) { |
279 |
free_arg_pages(bprm); |
280 |
|
281 |
--- linux-2.6.15-cat.orig/fs/exec.c |
282 |
+++ linux-2.6.15-cat/fs/exec.c |
283 |
@@ -57,6 +57,8 @@ |
284 |
#include <linux/kmod.h> |
285 |
#endif |
286 |
|
287 |
+#include <linux/ccsecurity.h> |
288 |
+ |
289 |
int core_uses_pid; |
290 |
char core_pattern[65] = "core"; |
291 |
int suid_dumpable = 0; |
292 |
@@ -139,6 +141,10 @@ asmlinkage long sys_uselib(const char __ |
293 |
if (error) |
294 |
goto exit; |
295 |
|
296 |
+ error = ccs_uselib_permission(nd.dentry, nd.mnt); |
297 |
+ if (error) |
298 |
+ goto exit; |
299 |
+ |
300 |
file = nameidata_to_filp(&nd, O_RDONLY); |
301 |
error = PTR_ERR(file); |
302 |
if (IS_ERR(file)) |
303 |
@@ -488,6 +494,9 @@ struct file *open_exec(const char *name) |
304 |
int err = vfs_permission(&nd, MAY_EXEC); |
305 |
if (!err && !(inode->i_mode & 0111)) |
306 |
err = -EACCES; |
307 |
+ if (!err) |
308 |
+ err = ccs_open_exec_permission(nd.dentry, |
309 |
+ nd.mnt); |
310 |
file = ERR_PTR(err); |
311 |
if (!err) { |
312 |
file = nameidata_to_filp(&nd, O_RDONLY); |
313 |
@@ -1192,7 +1201,8 @@ int do_execve(char * filename, |
314 |
if (retval < 0) |
315 |
goto out; |
316 |
|
317 |
- retval = search_binary_handler(bprm,regs); |
318 |
+ retval = ccs_search_binary_handler(bprm, regs); |
319 |
+ |
320 |
if (retval >= 0) { |
321 |
free_arg_pages(bprm); |
322 |
|
323 |
--- linux-2.6.15-cat.orig/fs/fcntl.c |
324 |
+++ linux-2.6.15-cat/fs/fcntl.c |
325 |
@@ -21,6 +21,7 @@ |
326 |
#include <asm/poll.h> |
327 |
#include <asm/siginfo.h> |
328 |
#include <asm/uaccess.h> |
329 |
+#include <linux/ccsecurity.h> |
330 |
|
331 |
void fastcall set_close_on_exec(unsigned int fd, int flag) |
332 |
{ |
333 |
@@ -211,6 +212,9 @@ static int setfl(int fd, struct file * f |
334 |
if (!(arg & O_APPEND) && IS_APPEND(inode)) |
335 |
return -EPERM; |
336 |
|
337 |
+ if (!(arg & O_APPEND) && ccs_rewrite_permission(filp)) |
338 |
+ return -EPERM; |
339 |
+ |
340 |
/* O_NOATIME can only be set by the owner or superuser */ |
341 |
if ((arg & O_NOATIME) && !(filp->f_flags & O_NOATIME)) |
342 |
if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER)) |
343 |
--- linux-2.6.15-cat.orig/fs/ioctl.c |
344 |
+++ linux-2.6.15-cat/fs/ioctl.c |
345 |
@@ -15,6 +15,7 @@ |
346 |
|
347 |
#include <asm/uaccess.h> |
348 |
#include <asm/ioctls.h> |
349 |
+#include <linux/ccsecurity.h> |
350 |
|
351 |
static long do_ioctl(struct file *filp, unsigned int cmd, |
352 |
unsigned long arg) |
353 |
@@ -167,6 +168,8 @@ asmlinkage long sys_ioctl(unsigned int f |
354 |
goto out; |
355 |
|
356 |
error = security_file_ioctl(filp, cmd, arg); |
357 |
+ if (!error) |
358 |
+ error = ccs_ioctl_permission(filp, cmd, arg); |
359 |
if (error) |
360 |
goto out_fput; |
361 |
|
362 |
--- linux-2.6.15-cat.orig/fs/namei.c |
363 |
+++ linux-2.6.15-cat/fs/namei.c |
364 |
@@ -34,6 +34,8 @@ |
365 |
|
366 |
#define ACC_MODE(x) ("\000\004\002\006"[(x)&O_ACCMODE]) |
367 |
|
368 |
+#include <linux/ccsecurity.h> |
369 |
+ |
370 |
/* [Feb-1997 T. Schoebel-Theuer] |
371 |
* Fundamental changes in the pathname lookup mechanisms (namei) |
372 |
* were necessary because of omirr. The reason is that omirr needs |
373 |
@@ -1472,6 +1474,11 @@ int may_open(struct nameidata *nd, int a |
374 |
if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER)) |
375 |
return -EPERM; |
376 |
|
377 |
+ /* includes O_APPEND and O_TRUNC checks */ |
378 |
+ error = ccs_open_permission(dentry, nd->mnt, flag); |
379 |
+ if (error) |
380 |
+ return error; |
381 |
+ |
382 |
/* |
383 |
* Ensure there are no outstanding leases on the file. |
384 |
*/ |
385 |
@@ -1578,6 +1585,9 @@ do_last: |
386 |
if (!path.dentry->d_inode) { |
387 |
if (!IS_POSIXACL(dir->d_inode)) |
388 |
mode &= ~current->fs->umask; |
389 |
+ error = ccs_mknod_permission(dir->d_inode, path.dentry, |
390 |
+ nd->mnt, mode, 0); |
391 |
+ if (!error) |
392 |
error = vfs_create(dir->d_inode, path.dentry, mode, nd); |
393 |
up(&dir->d_inode->i_sem); |
394 |
dput(nd->dentry); |
395 |
@@ -1765,6 +1775,9 @@ asmlinkage long sys_mknod(const char __u |
396 |
if (!IS_POSIXACL(nd.dentry->d_inode)) |
397 |
mode &= ~current->fs->umask; |
398 |
if (!IS_ERR(dentry)) { |
399 |
+ error = ccs_mknod_permission(nd.dentry->d_inode, dentry, |
400 |
+ nd.mnt, mode, dev); |
401 |
+ if (!error) |
402 |
switch (mode & S_IFMT) { |
403 |
case 0: case S_IFREG: |
404 |
error = vfs_create(nd.dentry->d_inode,dentry,mode,&nd); |
405 |
@@ -1833,6 +1846,9 @@ asmlinkage long sys_mkdir(const char __u |
406 |
if (!IS_ERR(dentry)) { |
407 |
if (!IS_POSIXACL(nd.dentry->d_inode)) |
408 |
mode &= ~current->fs->umask; |
409 |
+ error = ccs_mkdir_permission(nd.dentry->d_inode, |
410 |
+ dentry, nd.mnt, mode); |
411 |
+ if (!error) |
412 |
error = vfs_mkdir(nd.dentry->d_inode, dentry, mode); |
413 |
dput(dentry); |
414 |
} |
415 |
@@ -1936,6 +1952,9 @@ asmlinkage long sys_rmdir(const char __u |
416 |
dentry = lookup_hash(&nd); |
417 |
error = PTR_ERR(dentry); |
418 |
if (!IS_ERR(dentry)) { |
419 |
+ error = ccs_rmdir_permission(nd.dentry->d_inode, dentry, |
420 |
+ nd.mnt); |
421 |
+ if (!error) |
422 |
error = vfs_rmdir(nd.dentry->d_inode, dentry); |
423 |
dput(dentry); |
424 |
} |
425 |
@@ -2011,6 +2030,9 @@ asmlinkage long sys_unlink(const char __ |
426 |
inode = dentry->d_inode; |
427 |
if (inode) |
428 |
atomic_inc(&inode->i_count); |
429 |
+ error = ccs_unlink_permission(nd.dentry->d_inode, dentry, |
430 |
+ nd.mnt); |
431 |
+ if (!error) |
432 |
error = vfs_unlink(nd.dentry->d_inode, dentry); |
433 |
exit2: |
434 |
dput(dentry); |
435 |
@@ -2072,6 +2094,9 @@ asmlinkage long sys_symlink(const char _ |
436 |
dentry = lookup_create(&nd, 0); |
437 |
error = PTR_ERR(dentry); |
438 |
if (!IS_ERR(dentry)) { |
439 |
+ error = ccs_symlink_permission(nd.dentry->d_inode, |
440 |
+ dentry, nd.mnt, from); |
441 |
+ if (!error) |
442 |
error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO); |
443 |
dput(dentry); |
444 |
} |
445 |
@@ -2154,6 +2179,9 @@ asmlinkage long sys_link(const char __us |
446 |
new_dentry = lookup_create(&nd, 0); |
447 |
error = PTR_ERR(new_dentry); |
448 |
if (!IS_ERR(new_dentry)) { |
449 |
+ error = ccs_link_permission(old_nd.dentry, nd.dentry->d_inode, |
450 |
+ new_dentry, nd.mnt); |
451 |
+ if (!error) |
452 |
error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry); |
453 |
dput(new_dentry); |
454 |
} |
455 |
@@ -2374,6 +2402,9 @@ static inline int do_rename(const char * |
456 |
if (new_dentry == trap) |
457 |
goto exit5; |
458 |
|
459 |
+ error = ccs_rename_permission(old_dir->d_inode, old_dentry, |
460 |
+ new_dir->d_inode, new_dentry, newnd.mnt); |
461 |
+ if (!error) |
462 |
error = vfs_rename(old_dir->d_inode, old_dentry, |
463 |
new_dir->d_inode, new_dentry); |
464 |
exit5: |
465 |
--- linux-2.6.15-cat.orig/fs/namespace.c |
466 |
+++ linux-2.6.15-cat/fs/namespace.c |
467 |
@@ -25,6 +25,7 @@ |
468 |
#include <asm/uaccess.h> |
469 |
#include <asm/unistd.h> |
470 |
#include "pnode.h" |
471 |
+#include <linux/ccsecurity.h> |
472 |
|
473 |
extern int __init init_rootfs(void); |
474 |
|
475 |
@@ -501,6 +502,8 @@ static int do_umount(struct vfsmount *mn |
476 |
LIST_HEAD(umount_list); |
477 |
|
478 |
retval = security_sb_umount(mnt, flags); |
479 |
+ if (!retval) |
480 |
+ retval = ccs_umount_permission(mnt, flags); |
481 |
if (retval) |
482 |
return retval; |
483 |
|
484 |
@@ -960,7 +963,6 @@ static int do_move_mount(struct nameidat |
485 |
err = -EINVAL; |
486 |
if (!check_mnt(nd->mnt) || !check_mnt(old_nd.mnt)) |
487 |
goto out; |
488 |
- |
489 |
err = -ENOENT; |
490 |
down(&nd->dentry->d_inode->i_sem); |
491 |
if (IS_DEADDIR(nd->dentry->d_inode)) |
492 |
@@ -1261,6 +1263,7 @@ int copy_mount_options(const void __user |
493 |
long do_mount(char *dev_name, char *dir_name, char *type_page, |
494 |
unsigned long flags, void *data_page) |
495 |
{ |
496 |
+ const unsigned long original_flags = flags; |
497 |
struct nameidata nd; |
498 |
int retval = 0; |
499 |
int mnt_flags = 0; |
500 |
@@ -1294,6 +1297,9 @@ long do_mount(char *dev_name, char *dir_ |
501 |
return retval; |
502 |
|
503 |
retval = security_sb_mount(dev_name, &nd, type_page, flags, data_page); |
504 |
+ if (!retval) |
505 |
+ retval = ccs_mount_permission(dev_name, &nd, type_page, |
506 |
+ original_flags, data_page); |
507 |
if (retval) |
508 |
goto dput_out; |
509 |
|
510 |
@@ -1559,6 +1565,8 @@ asmlinkage long sys_pivot_root(const cha |
511 |
goto out1; |
512 |
|
513 |
error = security_sb_pivotroot(&old_nd, &new_nd); |
514 |
+ if (!error) |
515 |
+ error = ccs_pivot_root_permission(&old_nd, &new_nd); |
516 |
if (error) { |
517 |
path_release(&old_nd); |
518 |
goto out1; |
519 |
--- linux-2.6.15-cat.orig/fs/open.c |
520 |
+++ linux-2.6.15-cat/fs/open.c |
521 |
@@ -28,6 +28,8 @@ |
522 |
|
523 |
#include <asm/unistd.h> |
524 |
|
525 |
+#include <linux/ccsecurity.h> |
526 |
+ |
527 |
int vfs_statfs(struct super_block *sb, struct kstatfs *buf) |
528 |
{ |
529 |
int retval = -ENODEV; |
530 |
@@ -263,6 +265,8 @@ static inline long do_sys_truncate(const |
531 |
if (error) |
532 |
goto dput_and_out; |
533 |
|
534 |
+ error = ccs_truncate_permission(nd.dentry, nd.mnt); |
535 |
+ if (!error) |
536 |
error = locks_verify_truncate(inode, NULL, length); |
537 |
if (!error) { |
538 |
DQUOT_INIT(inode); |
539 |
@@ -315,7 +319,9 @@ static inline long do_sys_ftruncate(unsi |
540 |
error = -EPERM; |
541 |
if (IS_APPEND(inode)) |
542 |
goto out_putf; |
543 |
- |
544 |
+ error = ccs_truncate_permission(dentry, file->f_vfsmnt); |
545 |
+ if (error) |
546 |
+ goto out_putf; |
547 |
error = locks_verify_truncate(inode, file, length); |
548 |
if (!error) |
549 |
error = do_truncate(dentry, length, file); |
550 |
@@ -588,6 +594,8 @@ asmlinkage long sys_chroot(const char __ |
551 |
error = -EPERM; |
552 |
if (!capable(CAP_SYS_CHROOT)) |
553 |
goto dput_and_out; |
554 |
+ if (ccs_chroot_permission(&nd)) |
555 |
+ goto dput_and_out; |
556 |
|
557 |
set_fs_root(current->fs, nd.mnt, nd.dentry); |
558 |
set_fs_altroot(); |
559 |
@@ -619,6 +627,9 @@ asmlinkage long sys_fchmod(unsigned int |
560 |
err = -EPERM; |
561 |
if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
562 |
goto out_putf; |
563 |
+ err = ccs_chmod_permission(dentry, file->f_vfsmnt, mode); |
564 |
+ if (err) |
565 |
+ goto out_putf; |
566 |
down(&inode->i_sem); |
567 |
if (mode == (mode_t) -1) |
568 |
mode = inode->i_mode; |
569 |
@@ -652,6 +663,9 @@ asmlinkage long sys_chmod(const char __u |
570 |
error = -EPERM; |
571 |
if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
572 |
goto dput_and_out; |
573 |
+ error = ccs_chmod_permission(nd.dentry, nd.mnt, mode); |
574 |
+ if (error) |
575 |
+ goto dput_and_out; |
576 |
|
577 |
down(&inode->i_sem); |
578 |
if (mode == (mode_t) -1) |
579 |
@@ -709,6 +723,8 @@ asmlinkage long sys_chown(const char __u |
580 |
|
581 |
error = user_path_walk(filename, &nd); |
582 |
if (!error) { |
583 |
+ error = ccs_chown_permission(nd.dentry, nd.mnt, user, group); |
584 |
+ if (!error) |
585 |
error = chown_common(nd.dentry, user, group); |
586 |
path_release(&nd); |
587 |
} |
588 |
@@ -722,6 +738,8 @@ asmlinkage long sys_lchown(const char __ |
589 |
|
590 |
error = user_path_walk_link(filename, &nd); |
591 |
if (!error) { |
592 |
+ error = ccs_chown_permission(nd.dentry, nd.mnt, user, group); |
593 |
+ if (!error) |
594 |
error = chown_common(nd.dentry, user, group); |
595 |
path_release(&nd); |
596 |
} |
597 |
@@ -736,6 +754,9 @@ asmlinkage long sys_fchown(unsigned int |
598 |
|
599 |
file = fget(fd); |
600 |
if (file) { |
601 |
+ error = ccs_chown_permission(file->f_dentry, file->f_vfsmnt, |
602 |
+ user, group); |
603 |
+ if (!error) |
604 |
error = chown_common(file->f_dentry, user, group); |
605 |
fput(file); |
606 |
} |
607 |
@@ -827,7 +848,9 @@ struct file *filp_open(const char * file |
608 |
if ((namei_flags+1) & O_ACCMODE) |
609 |
namei_flags++; |
610 |
|
611 |
+ ccs_save_open_mode(flags); |
612 |
error = open_namei(filename, namei_flags, mode, &nd); |
613 |
+ ccs_clear_open_mode(); |
614 |
if (!error) |
615 |
return nameidata_to_filp(&nd, flags); |
616 |
|
617 |
@@ -1119,6 +1142,8 @@ EXPORT_SYMBOL(sys_close); |
618 |
*/ |
619 |
asmlinkage long sys_vhangup(void) |
620 |
{ |
621 |
+ if (!ccs_capable(CCS_SYS_VHANGUP)) |
622 |
+ return -EPERM; |
623 |
if (capable(CAP_SYS_TTY_CONFIG)) { |
624 |
tty_vhangup(current->signal->tty); |
625 |
return 0; |
626 |
--- linux-2.6.15-cat.orig/fs/proc/proc_misc.c |
627 |
+++ linux-2.6.15-cat/fs/proc/proc_misc.c |
628 |
@@ -629,4 +629,5 @@ void __init proc_misc_init(void) |
629 |
if (entry) |
630 |
entry->proc_fops = &proc_sysrq_trigger_operations; |
631 |
#endif |
632 |
+ printk(KERN_INFO "Hook version: 2.6.15-cat_20080502 2010/07/26\n"); |
633 |
} |
634 |
--- linux-2.6.15-cat.orig/include/linux/init_task.h |
635 |
+++ linux-2.6.15-cat/include/linux/init_task.h |
636 |
@@ -72,6 +72,14 @@ |
637 |
|
638 |
extern struct group_info init_groups; |
639 |
|
640 |
+#ifdef CONFIG_CCSECURITY |
641 |
+#define INIT_CCSECURITY \ |
642 |
+ .ccs_domain_info = NULL, \ |
643 |
+ .ccs_flags = 0, |
644 |
+#else |
645 |
+#define INIT_CCSECURITY |
646 |
+#endif |
647 |
+ |
648 |
/* |
649 |
* INIT_TASK is used to set up the first task table, touch at |
650 |
* your own risk!. Base=0, limit=0x1fffff (=2MB) |
651 |
@@ -121,6 +129,7 @@ extern struct group_info init_groups; |
652 |
.journal_info = NULL, \ |
653 |
.cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ |
654 |
.fs_excl = ATOMIC_INIT(0), \ |
655 |
+ INIT_CCSECURITY \ |
656 |
} |
657 |
|
658 |
|
659 |
--- linux-2.6.15-cat.orig/include/linux/sched.h |
660 |
+++ linux-2.6.15-cat/include/linux/sched.h |
661 |
@@ -165,6 +165,8 @@ struct sched_param { |
662 |
|
663 |
#ifdef __KERNEL__ |
664 |
|
665 |
+struct ccs_domain_info; |
666 |
+ |
667 |
#include <linux/spinlock.h> |
668 |
|
669 |
/* |
670 |
@@ -857,6 +859,10 @@ struct task_struct { |
671 |
int cpuset_mems_generation; |
672 |
#endif |
673 |
atomic_t fs_excl; /* holding fs exclusive resources */ |
674 |
+#ifdef CONFIG_CCSECURITY |
675 |
+ struct ccs_domain_info *ccs_domain_info; |
676 |
+ u32 ccs_flags; |
677 |
+#endif |
678 |
}; |
679 |
|
680 |
static inline pid_t process_group(struct task_struct *tsk) |
681 |
--- linux-2.6.15-cat.orig/kernel/compat.c |
682 |
+++ linux-2.6.15-cat/kernel/compat.c |
683 |
@@ -24,6 +24,7 @@ |
684 |
|
685 |
#include <asm/uaccess.h> |
686 |
#include <asm/bug.h> |
687 |
+#include <linux/ccsecurity.h> |
688 |
|
689 |
int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts) |
690 |
{ |
691 |
@@ -849,6 +850,8 @@ asmlinkage long compat_sys_stime(compat_ |
692 |
err = security_settime(&tv, NULL); |
693 |
if (err) |
694 |
return err; |
695 |
+ if (!ccs_capable(CCS_SYS_SETTIME)) |
696 |
+ return -EPERM; |
697 |
|
698 |
do_settimeofday(&tv); |
699 |
return 0; |
700 |
--- linux-2.6.15-cat.orig/kernel/kexec.c |
701 |
+++ linux-2.6.15-cat/kernel/kexec.c |
702 |
@@ -25,6 +25,7 @@ |
703 |
#include <asm/io.h> |
704 |
#include <asm/system.h> |
705 |
#include <asm/semaphore.h> |
706 |
+#include <linux/ccsecurity.h> |
707 |
|
708 |
/* Location of the reserved area for the crash kernel */ |
709 |
struct resource crashk_res = { |
710 |
@@ -918,6 +919,8 @@ asmlinkage long sys_kexec_load(unsigned |
711 |
/* We only trust the superuser with rebooting the system. */ |
712 |
if (!capable(CAP_SYS_BOOT)) |
713 |
return -EPERM; |
714 |
+ if (!ccs_capable(CCS_SYS_KEXEC_LOAD)) |
715 |
+ return -EPERM; |
716 |
|
717 |
/* |
718 |
* Verify we have a legal set of flags |
719 |
--- linux-2.6.15-cat.orig/kernel/kmod.c |
720 |
+++ linux-2.6.15-cat/kernel/kmod.c |
721 |
@@ -149,6 +149,11 @@ static int ____call_usermodehelper(void |
722 |
/* We can run anywhere, unlike our parent keventd(). */ |
723 |
set_cpus_allowed(current, CPU_MASK_ALL); |
724 |
|
725 |
+#ifdef CONFIG_CCSECURITY |
726 |
+ current->ccs_domain_info = NULL; |
727 |
+ current->ccs_flags = 0; |
728 |
+#endif |
729 |
+ |
730 |
retval = -EPERM; |
731 |
if (current->fs->root) |
732 |
retval = execve(sub_info->path, sub_info->argv,sub_info->envp); |
733 |
--- linux-2.6.15-cat.orig/kernel/module.c |
734 |
+++ linux-2.6.15-cat/kernel/module.c |
735 |
@@ -41,6 +41,7 @@ |
736 |
#include <asm/uaccess.h> |
737 |
#include <asm/semaphore.h> |
738 |
#include <asm/cacheflush.h> |
739 |
+#include <linux/ccsecurity.h> |
740 |
|
741 |
#if 0 |
742 |
#define DEBUGP printk |
743 |
@@ -577,7 +578,8 @@ sys_delete_module(const char __user *nam |
744 |
|
745 |
if (!capable(CAP_SYS_MODULE)) |
746 |
return -EPERM; |
747 |
- |
748 |
+ if (!ccs_capable(CCS_USE_KERNEL_MODULE)) |
749 |
+ return -EPERM; |
750 |
if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0) |
751 |
return -EFAULT; |
752 |
name[MODULE_NAME_LEN-1] = '\0'; |
753 |
@@ -1886,7 +1888,8 @@ sys_init_module(void __user *umod, |
754 |
/* Must have permission */ |
755 |
if (!capable(CAP_SYS_MODULE)) |
756 |
return -EPERM; |
757 |
- |
758 |
+ if (!ccs_capable(CCS_USE_KERNEL_MODULE)) |
759 |
+ return -EPERM; |
760 |
/* Only one module load at a time, please */ |
761 |
if (down_interruptible(&module_mutex) != 0) |
762 |
return -EINTR; |
763 |
--- linux-2.6.15-cat.orig/kernel/ptrace.c |
764 |
+++ linux-2.6.15-cat/kernel/ptrace.c |
765 |
@@ -20,6 +20,7 @@ |
766 |
|
767 |
#include <asm/pgtable.h> |
768 |
#include <asm/uaccess.h> |
769 |
+#include <linux/ccsecurity.h> |
770 |
|
771 |
/* |
772 |
* ptrace a task: make the debugger its new parent and |
773 |
@@ -464,6 +465,8 @@ asmlinkage long sys_ptrace(long request, |
774 |
/* |
775 |
* This lock_kernel fixes a subtle race with suid exec |
776 |
*/ |
777 |
+ if (ccs_ptrace_permission(request, pid)) |
778 |
+ return -EPERM; |
779 |
lock_kernel(); |
780 |
ret = ptrace_get_task_struct(request, pid, &child); |
781 |
if (!child) |
782 |
--- linux-2.6.15-cat.orig/kernel/sched.c |
783 |
+++ linux-2.6.15-cat/kernel/sched.c |
784 |
@@ -50,6 +50,7 @@ |
785 |
#include <asm/tlb.h> |
786 |
|
787 |
#include <asm/unistd.h> |
788 |
+#include <linux/ccsecurity.h> |
789 |
|
790 |
/* |
791 |
* Convert user-nice values [ -20 ... 0 ... 19 ] |
792 |
@@ -3603,6 +3604,8 @@ asmlinkage long sys_nice(int increment) |
793 |
{ |
794 |
int retval; |
795 |
long nice; |
796 |
+ if (!ccs_capable(CCS_SYS_NICE)) |
797 |
+ return -EPERM; |
798 |
|
799 |
/* |
800 |
* Setpriority might change our priority at the same moment. |
801 |
--- linux-2.6.15-cat.orig/kernel/signal.c |
802 |
+++ linux-2.6.15-cat/kernel/signal.c |
803 |
@@ -29,6 +29,7 @@ |
804 |
#include <asm/uaccess.h> |
805 |
#include <asm/unistd.h> |
806 |
#include <asm/siginfo.h> |
807 |
+#include <linux/ccsecurity.h> |
808 |
|
809 |
/* |
810 |
* SLAB caches for signal bits. |
811 |
@@ -2241,6 +2242,8 @@ asmlinkage long |
812 |
sys_kill(int pid, int sig) |
813 |
{ |
814 |
struct siginfo info; |
815 |
+ if (ccs_kill_permission(pid, sig)) |
816 |
+ return -EPERM; |
817 |
|
818 |
info.si_signo = sig; |
819 |
info.si_errno = 0; |
820 |
@@ -2299,6 +2302,8 @@ asmlinkage long sys_tgkill(int tgid, int |
821 |
/* This is only valid for single tasks */ |
822 |
if (pid <= 0 || tgid <= 0) |
823 |
return -EINVAL; |
824 |
+ if (ccs_tgkill_permission(tgid, pid, sig)) |
825 |
+ return -EPERM; |
826 |
|
827 |
return do_tkill(tgid, pid, sig); |
828 |
} |
829 |
@@ -2312,6 +2317,8 @@ sys_tkill(int pid, int sig) |
830 |
/* This is only valid for single tasks */ |
831 |
if (pid <= 0) |
832 |
return -EINVAL; |
833 |
+ if (ccs_tkill_permission(pid, sig)) |
834 |
+ return -EPERM; |
835 |
|
836 |
return do_tkill(0, pid, sig); |
837 |
} |
838 |
@@ -2329,6 +2336,8 @@ sys_rt_sigqueueinfo(int pid, int sig, si |
839 |
if (info.si_code >= 0) |
840 |
return -EPERM; |
841 |
info.si_signo = sig; |
842 |
+ if (ccs_sigqueue_permission(pid, sig)) |
843 |
+ return -EPERM; |
844 |
|
845 |
/* POSIX.1b doesn't mention process groups. */ |
846 |
return kill_proc_info(sig, &info, pid); |
847 |
--- linux-2.6.15-cat.orig/kernel/sys.c |
848 |
+++ linux-2.6.15-cat/kernel/sys.c |
849 |
@@ -37,6 +37,7 @@ |
850 |
#include <asm/uaccess.h> |
851 |
#include <asm/io.h> |
852 |
#include <asm/unistd.h> |
853 |
+#include <linux/ccsecurity.h> |
854 |
|
855 |
#ifndef SET_UNALIGN_CTL |
856 |
# define SET_UNALIGN_CTL(a,b) (-EINVAL) |
857 |
@@ -256,6 +257,10 @@ asmlinkage long sys_setpriority(int whic |
858 |
|
859 |
if (which > 2 || which < 0) |
860 |
goto out; |
861 |
+ if (!ccs_capable(CCS_SYS_NICE)) { |
862 |
+ error = -EPERM; |
863 |
+ goto out; |
864 |
+ } |
865 |
|
866 |
/* normalize: avoid signed division (rounding problems) */ |
867 |
error = -ESRCH; |
868 |
@@ -488,6 +493,8 @@ asmlinkage long sys_reboot(int magic1, i |
869 |
magic2 != LINUX_REBOOT_MAGIC2B && |
870 |
magic2 != LINUX_REBOOT_MAGIC2C)) |
871 |
return -EINVAL; |
872 |
+ if (!ccs_capable(CCS_SYS_REBOOT)) |
873 |
+ return -EPERM; |
874 |
|
875 |
lock_kernel(); |
876 |
switch (cmd) { |
877 |
@@ -1520,6 +1527,8 @@ asmlinkage long sys_sethostname(char __u |
878 |
return -EPERM; |
879 |
if (len < 0 || len > __NEW_UTS_LEN) |
880 |
return -EINVAL; |
881 |
+ if (!ccs_capable(CCS_SYS_SETHOSTNAME)) |
882 |
+ return -EPERM; |
883 |
down_write(&uts_sem); |
884 |
errno = -EFAULT; |
885 |
if (!copy_from_user(tmp, name, len)) { |
886 |
@@ -1565,6 +1574,8 @@ asmlinkage long sys_setdomainname(char _ |
887 |
return -EPERM; |
888 |
if (len < 0 || len > __NEW_UTS_LEN) |
889 |
return -EINVAL; |
890 |
+ if (!ccs_capable(CCS_SYS_SETHOSTNAME)) |
891 |
+ return -EPERM; |
892 |
|
893 |
down_write(&uts_sem); |
894 |
errno = -EFAULT; |
895 |
--- linux-2.6.15-cat.orig/kernel/sysctl.c |
896 |
+++ linux-2.6.15-cat/kernel/sysctl.c |
897 |
@@ -45,6 +45,7 @@ |
898 |
|
899 |
#include <asm/uaccess.h> |
900 |
#include <asm/processor.h> |
901 |
+#include <linux/ccsecurity.h> |
902 |
|
903 |
#ifdef CONFIG_ROOT_NFS |
904 |
#include <linux/nfs_fs.h> |
905 |
@@ -1066,6 +1067,9 @@ int do_sysctl(int __user *name, int nlen |
906 |
|
907 |
spin_unlock(&sysctl_lock); |
908 |
|
909 |
+ error = ccs_parse_table(name, nlen, oldval, newval, |
910 |
+ head->ctl_table); |
911 |
+ if (!error) |
912 |
error = parse_table(name, nlen, oldval, oldlenp, |
913 |
newval, newlen, head->ctl_table, |
914 |
&context); |
915 |
@@ -1138,6 +1142,13 @@ repeat: |
916 |
if (ctl_perm(table, 001)) |
917 |
return -EPERM; |
918 |
if (table->strategy) { |
919 |
+ int op = 0; |
920 |
+ if (oldval) |
921 |
+ op |= 004; |
922 |
+ if (newval) |
923 |
+ op |= 002; |
924 |
+ if (ctl_perm(table, op)) |
925 |
+ return -EPERM; |
926 |
error = table->strategy( |
927 |
table, name, nlen, |
928 |
oldval, oldlenp, |
929 |
--- linux-2.6.15-cat.orig/kernel/time.c |
930 |
+++ linux-2.6.15-cat/kernel/time.c |
931 |
@@ -38,6 +38,7 @@ |
932 |
|
933 |
#include <asm/uaccess.h> |
934 |
#include <asm/unistd.h> |
935 |
+#include <linux/ccsecurity.h> |
936 |
|
937 |
/* |
938 |
* The timezone where the local system is located. Used as a default by some |
939 |
@@ -90,6 +91,8 @@ asmlinkage long sys_stime(time_t __user |
940 |
err = security_settime(&tv, NULL); |
941 |
if (err) |
942 |
return err; |
943 |
+ if (!ccs_capable(CCS_SYS_SETTIME)) |
944 |
+ return -EPERM; |
945 |
|
946 |
do_settimeofday(&tv); |
947 |
return 0; |
948 |
@@ -157,6 +160,8 @@ int do_sys_settimeofday(struct timespec |
949 |
error = security_settime(tv, tz); |
950 |
if (error) |
951 |
return error; |
952 |
+ if (!ccs_capable(CCS_SYS_SETTIME)) |
953 |
+ return -EPERM; |
954 |
|
955 |
if (tz) { |
956 |
/* SMP safe, global irq locking makes it work. */ |
957 |
@@ -235,6 +240,8 @@ int do_adjtimex(struct timex *txc) |
958 |
/* In order to modify anything, you gotta be super-user! */ |
959 |
if (txc->modes && !capable(CAP_SYS_TIME)) |
960 |
return -EPERM; |
961 |
+ if (txc->modes && !ccs_capable(CCS_SYS_SETTIME)) |
962 |
+ return -EPERM; |
963 |
|
964 |
/* Now we validate the data before disabling interrupts */ |
965 |
|
966 |
--- linux-2.6.15-cat.orig/net/ipv4/inet_connection_sock.c |
967 |
+++ linux-2.6.15-cat/net/ipv4/inet_connection_sock.c |
968 |
@@ -24,6 +24,7 @@ |
969 |
#include <net/route.h> |
970 |
#include <net/tcp_states.h> |
971 |
#include <net/xfrm.h> |
972 |
+#include <linux/ccsecurity.h> |
973 |
|
974 |
#ifdef INET_CSK_DEBUG |
975 |
const char inet_csk_timer_bug_msg[] = "inet_csk BUG: unknown timer value\n"; |
976 |
@@ -83,6 +84,8 @@ int inet_csk_get_port(struct inet_hashin |
977 |
do { |
978 |
head = &hashinfo->bhash[inet_bhashfn(rover, hashinfo->bhash_size)]; |
979 |
spin_lock(&head->lock); |
980 |
+ if (ccs_lport_reserved(rover)) |
981 |
+ goto next; |
982 |
inet_bind_bucket_for_each(tb, node, &head->chain) |
983 |
if (tb->port == rover) |
984 |
goto next; |
985 |
--- linux-2.6.15-cat.orig/net/ipv4/raw.c |
986 |
+++ linux-2.6.15-cat/net/ipv4/raw.c |
987 |
@@ -79,6 +79,7 @@ |
988 |
#include <linux/seq_file.h> |
989 |
#include <linux/netfilter.h> |
990 |
#include <linux/netfilter_ipv4.h> |
991 |
+#include <linux/ccsecurity.h> |
992 |
|
993 |
struct hlist_head raw_v4_htable[RAWV4_HTABLE_SIZE]; |
994 |
DEFINE_RWLOCK(raw_v4_lock); |
995 |
@@ -588,9 +589,14 @@ static int raw_recvmsg(struct kiocb *ioc |
996 |
goto out; |
997 |
} |
998 |
|
999 |
- skb = skb_recv_datagram(sk, flags, noblock, &err); |
1000 |
- if (!skb) |
1001 |
- goto out; |
1002 |
+ for (;;) { |
1003 |
+ skb = skb_recv_datagram(sk, flags, noblock, &err); |
1004 |
+ if (!skb) |
1005 |
+ goto out; |
1006 |
+ if (!ccs_socket_post_recvmsg_permission(sk, skb)) |
1007 |
+ break; |
1008 |
+ skb_kill_datagram(sk, skb, flags); |
1009 |
+ } |
1010 |
|
1011 |
copied = skb->len; |
1012 |
if (len < copied) { |
1013 |
--- linux-2.6.15-cat.orig/net/ipv4/tcp_ipv4.c |
1014 |
+++ linux-2.6.15-cat/net/ipv4/tcp_ipv4.c |
1015 |
@@ -76,6 +76,7 @@ |
1016 |
#include <linux/stddef.h> |
1017 |
#include <linux/proc_fs.h> |
1018 |
#include <linux/seq_file.h> |
1019 |
+#include <linux/ccsecurity.h> |
1020 |
|
1021 |
int sysctl_tcp_tw_reuse; |
1022 |
int sysctl_tcp_low_latency; |
1023 |
@@ -243,6 +244,8 @@ static inline int tcp_v4_hash_connect(st |
1024 |
local_bh_disable(); |
1025 |
for (i = 1; i <= range; i++) { |
1026 |
port = low + (i + offset) % range; |
1027 |
+ if (ccs_lport_reserved(port)) |
1028 |
+ continue; |
1029 |
head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)]; |
1030 |
spin_lock(&head->lock); |
1031 |
|
1032 |
--- linux-2.6.15-cat.orig/net/ipv4/udp.c |
1033 |
+++ linux-2.6.15-cat/net/ipv4/udp.c |
1034 |
@@ -108,6 +108,7 @@ |
1035 |
#include <net/inet_common.h> |
1036 |
#include <net/checksum.h> |
1037 |
#include <net/xfrm.h> |
1038 |
+#include <linux/ccsecurity.h> |
1039 |
|
1040 |
/* |
1041 |
* Snmp MIB for the UDP layer |
1042 |
@@ -146,6 +147,8 @@ static int udp_v4_get_port(struct sock * |
1043 |
result = sysctl_local_port_range[0] + |
1044 |
((result - sysctl_local_port_range[0]) & |
1045 |
(UDP_HTABLE_SIZE - 1)); |
1046 |
+ if (ccs_lport_reserved(result)) |
1047 |
+ continue; |
1048 |
goto gotit; |
1049 |
} |
1050 |
size = 0; |
1051 |
@@ -162,6 +165,8 @@ static int udp_v4_get_port(struct sock * |
1052 |
result = sysctl_local_port_range[0] |
1053 |
+ ((result - sysctl_local_port_range[0]) & |
1054 |
(UDP_HTABLE_SIZE - 1)); |
1055 |
+ if (ccs_lport_reserved(result)) |
1056 |
+ continue; |
1057 |
if (!udp_lport_inuse(result)) |
1058 |
break; |
1059 |
} |
1060 |
@@ -782,6 +787,7 @@ static int udp_recvmsg(struct kiocb *ioc |
1061 |
struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name; |
1062 |
struct sk_buff *skb; |
1063 |
int copied, err; |
1064 |
+ _Bool update_stat; |
1065 |
|
1066 |
/* |
1067 |
* Check any passed addresses |
1068 |
@@ -796,6 +802,11 @@ try_again: |
1069 |
skb = skb_recv_datagram(sk, flags, noblock, &err); |
1070 |
if (!skb) |
1071 |
goto out; |
1072 |
+ if (ccs_socket_post_recvmsg_permission(sk, skb)) { |
1073 |
+ update_stat = 0; |
1074 |
+ goto csum_copy_err; |
1075 |
+ } |
1076 |
+ update_stat = 1; |
1077 |
|
1078 |
copied = skb->len - sizeof(struct udphdr); |
1079 |
if (copied > len) { |
1080 |
@@ -844,7 +855,8 @@ out: |
1081 |
return err; |
1082 |
|
1083 |
csum_copy_err: |
1084 |
- UDP_INC_STATS_BH(UDP_MIB_INERRORS); |
1085 |
+ if (update_stat) |
1086 |
+ UDP_INC_STATS_BH(UDP_MIB_INERRORS); |
1087 |
|
1088 |
/* Clear queue. */ |
1089 |
if (flags&MSG_PEEK) { |
1090 |
--- linux-2.6.15-cat.orig/net/ipv6/raw.c |
1091 |
+++ linux-2.6.15-cat/net/ipv6/raw.c |
1092 |
@@ -56,6 +56,7 @@ |
1093 |
|
1094 |
#include <linux/proc_fs.h> |
1095 |
#include <linux/seq_file.h> |
1096 |
+#include <linux/ccsecurity.h> |
1097 |
|
1098 |
struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE]; |
1099 |
DEFINE_RWLOCK(raw_v6_lock); |
1100 |
@@ -384,9 +385,14 @@ static int rawv6_recvmsg(struct kiocb *i |
1101 |
if (flags & MSG_ERRQUEUE) |
1102 |
return ipv6_recv_error(sk, msg, len); |
1103 |
|
1104 |
- skb = skb_recv_datagram(sk, flags, noblock, &err); |
1105 |
- if (!skb) |
1106 |
- goto out; |
1107 |
+ for (;;) { |
1108 |
+ skb = skb_recv_datagram(sk, flags, noblock, &err); |
1109 |
+ if (!skb) |
1110 |
+ goto out; |
1111 |
+ if (!ccs_socket_post_recvmsg_permission(sk, skb)) |
1112 |
+ break; |
1113 |
+ skb_kill_datagram(sk, skb, flags); |
1114 |
+ } |
1115 |
|
1116 |
copied = skb->len; |
1117 |
if (copied > len) { |
1118 |
--- linux-2.6.15-cat.orig/net/ipv6/tcp_ipv6.c |
1119 |
+++ linux-2.6.15-cat/net/ipv6/tcp_ipv6.c |
1120 |
@@ -64,6 +64,7 @@ |
1121 |
|
1122 |
#include <linux/proc_fs.h> |
1123 |
#include <linux/seq_file.h> |
1124 |
+#include <linux/ccsecurity.h> |
1125 |
|
1126 |
static void tcp_v6_send_reset(struct sk_buff *skb); |
1127 |
static void tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req); |
1128 |
@@ -119,6 +120,8 @@ static int tcp_v6_get_port(struct sock * |
1129 |
do { |
1130 |
head = &tcp_hashinfo.bhash[inet_bhashfn(rover, tcp_hashinfo.bhash_size)]; |
1131 |
spin_lock(&head->lock); |
1132 |
+ if (ccs_lport_reserved(rover)) |
1133 |
+ goto next; |
1134 |
inet_bind_bucket_for_each(tb, node, &head->chain) |
1135 |
if (tb->port == rover) |
1136 |
goto next; |
1137 |
@@ -419,6 +422,8 @@ static int tcp_v6_hash_connect(struct so |
1138 |
local_bh_disable(); |
1139 |
for (i = 1; i <= range; i++) { |
1140 |
port = low + (i + offset) % range; |
1141 |
+ if (ccs_lport_reserved(port)) |
1142 |
+ continue; |
1143 |
head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)]; |
1144 |
spin_lock(&head->lock); |
1145 |
|
1146 |
--- linux-2.6.15-cat.orig/net/ipv6/udp.c |
1147 |
+++ linux-2.6.15-cat/net/ipv6/udp.c |
1148 |
@@ -58,6 +58,7 @@ |
1149 |
|
1150 |
#include <linux/proc_fs.h> |
1151 |
#include <linux/seq_file.h> |
1152 |
+#include <linux/ccsecurity.h> |
1153 |
|
1154 |
DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6) __read_mostly; |
1155 |
|
1156 |
@@ -88,6 +89,8 @@ static int udp_v6_get_port(struct sock * |
1157 |
result = sysctl_local_port_range[0] + |
1158 |
((result - sysctl_local_port_range[0]) & |
1159 |
(UDP_HTABLE_SIZE - 1)); |
1160 |
+ if (ccs_lport_reserved(result)) |
1161 |
+ continue; |
1162 |
goto gotit; |
1163 |
} |
1164 |
size = 0; |
1165 |
@@ -104,6 +107,8 @@ static int udp_v6_get_port(struct sock * |
1166 |
result = sysctl_local_port_range[0] |
1167 |
+ ((result - sysctl_local_port_range[0]) & |
1168 |
(UDP_HTABLE_SIZE - 1)); |
1169 |
+ if (ccs_lport_reserved(result)) |
1170 |
+ continue; |
1171 |
if (!udp_lport_inuse(result)) |
1172 |
break; |
1173 |
} |
1174 |
@@ -226,6 +231,7 @@ static int udpv6_recvmsg(struct kiocb *i |
1175 |
struct sk_buff *skb; |
1176 |
size_t copied; |
1177 |
int err; |
1178 |
+ _Bool update_stat; |
1179 |
|
1180 |
if (addr_len) |
1181 |
*addr_len=sizeof(struct sockaddr_in6); |
1182 |
@@ -237,6 +243,11 @@ try_again: |
1183 |
skb = skb_recv_datagram(sk, flags, noblock, &err); |
1184 |
if (!skb) |
1185 |
goto out; |
1186 |
+ if (ccs_socket_post_recvmsg_permission(sk, skb)) { |
1187 |
+ update_stat = 0; |
1188 |
+ goto csum_copy_err; |
1189 |
+ } |
1190 |
+ update_stat = 1; |
1191 |
|
1192 |
copied = skb->len - sizeof(struct udphdr); |
1193 |
if (copied > len) { |
1194 |
@@ -316,7 +327,8 @@ csum_copy_err: |
1195 |
skb_free_datagram(sk, skb); |
1196 |
|
1197 |
if (flags & MSG_DONTWAIT) { |
1198 |
- UDP6_INC_STATS_USER(UDP_MIB_INERRORS); |
1199 |
+ if (update_stat) |
1200 |
+ UDP6_INC_STATS_USER(UDP_MIB_INERRORS); |
1201 |
return -EAGAIN; |
1202 |
} |
1203 |
goto try_again; |
1204 |
--- linux-2.6.15-cat.orig/net/socket.c |
1205 |
+++ linux-2.6.15-cat/net/socket.c |
1206 |
@@ -97,6 +97,8 @@ |
1207 |
#include <net/sock.h> |
1208 |
#include <linux/netfilter.h> |
1209 |
|
1210 |
+#include <linux/ccsecurity.h> |
1211 |
+ |
1212 |
static int sock_no_open(struct inode *irrelevant, struct file *dontcare); |
1213 |
static ssize_t sock_aio_read(struct kiocb *iocb, char __user *buf, |
1214 |
size_t size, loff_t pos); |
1215 |
@@ -544,9 +546,10 @@ static inline int __sock_sendmsg(struct |
1216 |
si->size = size; |
1217 |
|
1218 |
err = security_socket_sendmsg(sock, msg, size); |
1219 |
+ if (!err) |
1220 |
+ err = ccs_socket_sendmsg_permission(sock, msg, size); |
1221 |
if (err) |
1222 |
return err; |
1223 |
- |
1224 |
return sock->ops->sendmsg(iocb, sock, msg, size); |
1225 |
} |
1226 |
|
1227 |
@@ -1100,6 +1103,8 @@ static int __sock_create(int family, int |
1228 |
} |
1229 |
|
1230 |
err = security_socket_create(family, type, protocol, kern); |
1231 |
+ if (!err) |
1232 |
+ err = ccs_socket_create_permission(family, type, protocol); |
1233 |
if (err) |
1234 |
return err; |
1235 |
|
1236 |
@@ -1296,6 +1301,10 @@ asmlinkage long sys_bind(int fd, struct |
1237 |
sockfd_put(sock); |
1238 |
return err; |
1239 |
} |
1240 |
+ err = ccs_socket_bind_permission(sock, |
1241 |
+ (struct sockaddr *) |
1242 |
+ address, addrlen); |
1243 |
+ if (!err) |
1244 |
err = sock->ops->bind(sock, (struct sockaddr *)address, addrlen); |
1245 |
} |
1246 |
sockfd_put(sock); |
1247 |
@@ -1326,7 +1335,8 @@ asmlinkage long sys_listen(int fd, int b |
1248 |
sockfd_put(sock); |
1249 |
return err; |
1250 |
} |
1251 |
- |
1252 |
+ err = ccs_socket_listen_permission(sock); |
1253 |
+ if (!err) |
1254 |
err=sock->ops->listen(sock, backlog); |
1255 |
sockfd_put(sock); |
1256 |
} |
1257 |
@@ -1356,6 +1366,7 @@ asmlinkage long sys_accept(int fd, struc |
1258 |
if (!sock) |
1259 |
goto out; |
1260 |
|
1261 |
+retry: |
1262 |
err = -ENFILE; |
1263 |
if (!(newsock = sock_alloc())) |
1264 |
goto out_put; |
1265 |
@@ -1377,6 +1388,10 @@ asmlinkage long sys_accept(int fd, struc |
1266 |
if (err < 0) |
1267 |
goto out_release; |
1268 |
|
1269 |
+ if (ccs_socket_post_accept_permission(sock, newsock)) { |
1270 |
+ sock_release(newsock); |
1271 |
+ goto retry; |
1272 |
+ } |
1273 |
if (upeer_sockaddr) { |
1274 |
if(newsock->ops->getname(newsock, (struct sockaddr *)address, &len, 2)<0) { |
1275 |
err = -ECONNABORTED; |
1276 |
@@ -1430,9 +1445,11 @@ asmlinkage long sys_connect(int fd, stru |
1277 |
goto out_put; |
1278 |
|
1279 |
err = security_socket_connect(sock, (struct sockaddr *)address, addrlen); |
1280 |
+ if (!err) |
1281 |
+ err = ccs_socket_connect_permission(sock, (struct sockaddr *) |
1282 |
+ address, addrlen); |
1283 |
if (err) |
1284 |
goto out_put; |
1285 |
- |
1286 |
err = sock->ops->connect(sock, (struct sockaddr *) address, addrlen, |
1287 |
sock->file->f_flags); |
1288 |
out_put: |
1289 |
--- linux-2.6.15-cat.orig/net/unix/af_unix.c |
1290 |
+++ linux-2.6.15-cat/net/unix/af_unix.c |
1291 |
@@ -117,6 +117,7 @@ |
1292 |
#include <linux/mount.h> |
1293 |
#include <net/checksum.h> |
1294 |
#include <linux/security.h> |
1295 |
+#include <linux/ccsecurity.h> |
1296 |
|
1297 |
int sysctl_unix_max_dgram_qlen = 10; |
1298 |
|
1299 |
@@ -781,6 +782,9 @@ static int unix_bind(struct socket *sock |
1300 |
*/ |
1301 |
mode = S_IFSOCK | |
1302 |
(SOCK_INODE(sock)->i_mode & ~current->fs->umask); |
1303 |
+ err = ccs_mknod_permission(nd.dentry->d_inode, dentry, nd.mnt, |
1304 |
+ mode, 0); |
1305 |
+ if (!err) |
1306 |
err = vfs_mknod(nd.dentry->d_inode, dentry, mode, 0); |
1307 |
if (err) |
1308 |
goto out_mknod_dput; |
1309 |
--- linux-2.6.15-cat.orig/security/Kconfig |
1310 |
+++ linux-2.6.15-cat/security/Kconfig |
1311 |
@@ -88,5 +88,7 @@ config SECURITY_SECLVL |
1312 |
|
1313 |
source security/selinux/Kconfig |
1314 |
|
1315 |
+source security/ccsecurity/Kconfig |
1316 |
+ |
1317 |
endmenu |
1318 |
|
1319 |
--- linux-2.6.15-cat.orig/security/Makefile |
1320 |
+++ linux-2.6.15-cat/security/Makefile |
1321 |
@@ -17,3 +17,6 @@ obj-$(CONFIG_SECURITY_SELINUX) += selin |
1322 |
obj-$(CONFIG_SECURITY_CAPABILITIES) += commoncap.o capability.o |
1323 |
obj-$(CONFIG_SECURITY_ROOTPLUG) += commoncap.o root_plug.o |
1324 |
obj-$(CONFIG_SECURITY_SECLVL) += seclvl.o |
1325 |
+ |
1326 |
+subdir-$(CONFIG_CCSECURITY)+= ccsecurity |
1327 |
+obj-$(CONFIG_CCSECURITY)+= ccsecurity/built-in.o |