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Revision 164 - (show annotations) (download)
Sun Sep 4 11:17:09 2005 UTC (9 years ago) by azarah
Original Path: trunk/ChangeLog
File size: 28633 byte(s)
Also allow symlink() system call to operate on a symlink in a writable path
that points to non-writable path, bug #104711.

1 # ChangeLog for Path Sandbox
2 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 # $Header$
4
5 04 Sep 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
6
7 Also allow symlink() system call to operate on a symlink in a writable path
8 that points to non-writable path, bug #104711.
9
10 * sandbox-1.2.12 (2005/08/05)
11
12 05 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
13 sandbox.h:
14
15 Do not give an access violation if the access() system call do not have
16 write/read access - it does not actually modify, so we only need to return
17 not being able to write/read. Noted by Andres Loeh <kosmikus@gentoo.org>,
18 bug #101433.
19
20 If we are called from the command line, do not care about PORTAGE_TMPDIR,
21 and make the current directory the work directory. Also rename the variable
22 portage_tmp_dir to work_dir.
23
24 Remove the tmp_dir variable - we do not need it.
25
26 Improve error handling for get_sandbox_*_envvar() functions.
27
28 01 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
29
30 Still do normal log if debugging is requested.
31
32 Add support for SANDBOX_VERBOSE (enabled by default). Adjust SANDBOX_DEBUG
33 to only enable if equal to "1" or "yes".
34
35 Add /dev/tts to write permit, bug #42809.
36
37 27 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
38 sandbox_futils.c:
39
40 Do not resolve symlinks in PORTAGE_TMPDIR in sandbox .. we will handle that
41 in libsandbox .. bug #100309.
42
43 22 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h:
44
45 Print all logging to stderr, bug #90343, comment #15, by Zac Medico.
46
47 * sandbox-1.2.11 (2005/07/14)
48
49 14 July 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
50 Fix getcwd, bug #98419.
51
52 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
53 libsandbox.c:
54 - Try to cleanup and make error handling/printing consistent.
55 - Remove old logs if present and conflicting with current.
56 - Fix compile error with previous change, and return rather then exit().
57
58 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
59 sandbox.h, sandbox_futils.c:
60 - Fix possible segfault in env init code.
61 - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
62 write to /var/log/sandbox/, so in theory do not need all that.
63 - Redo the interface of the get_* functions so that we do not leak memory.
64 - Remove sandbox_dir and co - we are not using it anymore.
65 - Remove unused includes and variables.
66 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
67 OUTSIDE_LIBSANDBOX is not defined.
68 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
69 printing's last line not honouring NOCOLOR.
70
71 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
72 libsandbox.c:
73 - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
74 write to it.
75 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
76 - Add check_prefixes() with major cleanup on check_access().
77 - Cleanup init_env_entries() and check_prefixes().
78
79 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
80 sandbox_futils.c, libsandbox.c:
81 Remove unused 'pids file' code.
82
83 * sandbox-1.2.10 (2005/07/03)
84
85 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
86 Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
87
88 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
89 General cleanups:
90 - Remove fooling around with exit codes - we error out on presence of a log
91 anyhow.
92 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
93 appropriate there.
94
95 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
96 Cleanup the fail_nametoolong stuff a bit more.
97
98 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
99 Remove hopefully the last ld.so.preload bits we do not use anymore.
100
101 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
102 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
103 in check_syscall(). Should speed things up a bit (at least for the getcwd()
104 and long path name test it goes down to under a second, and not 10+ seconds
105 like before). Also warn if we skip checking due to the canonicalized path
106 being too long.
107
108 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
109 More comment/readability cleanups.
110
111 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
112 sandbox_futils.c, libsandbox.c:
113 Some strncpy/strncat and other cleanups.
114
115 * sandbox-1.2.9 (2005/06/09)
116
117 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
118 Move symlink hack down a bit to try and minimize on the amount of lstat()
119 calls we do.
120
121 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
122 Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
123
124 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
125 Add wrapper for access() function, bug #85413.
126
127 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
128 Use generic getcwd() implementation from uclibc - should be more portable
129 and looks a bit cleaner.
130
131 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
132 Make sure our true_* pointers are initialized to NULL, and that we check for
133 all references that they are valid.
134
135 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
136 Be default we will fail if the path name we try to canonicalize is too long.
137 This however could cause issues with some things (bug #94630 and #21766), so
138 if fail_nametoolong == 0, canonicalize() will return a null length string and
139 do not fail.
140
141 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
142 Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
143 make sure we re-export the new TMPDIR environment variable.
144
145 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
146 Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
147 by Marcus D. Hanwell <cryos@gentoo.org>.
148
149 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
150 Add /dev/console to write list, bug #38588.
151
152 * sandbox-1.2.8 (2005/05/13)
153
154 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
155 sandbox.h, sandbox_futils.c:
156 General cleanups.
157
158 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
159 sandbox.h:
160 Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
161
162 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
163 sandbox.h, sandbox_futils.c:
164 Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
165 to use TMPDIR if present in environment.
166
167 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
168 Remove sandbox_log_file from main() as its no longer used.
169
170 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
171 sandbox_futils.c:
172 Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
173 if already exported when sandbox started). Fix get_sandbox_log() and new
174 get_sandbox_debug_log() to not use already exported environment variables if
175 they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
176 SB_PATH_MAX fixes.
177
178 * sandbox-1.2.7 (2005/05/12)
179
180 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
181 sandbox_futils.c:
182 More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
183
184 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
185 Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
186 with '(null)' in it if we did not call sandbox with absolute path.
187
188 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
189 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
190 for the child.
191
192 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
193 Remove global preload_adaptable as it is no longer used.
194
195 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
196 Rewrite environment stuff to only be set when execve'ing the child process
197 to try and avoid issues like bug #91541 that causes sandbox to crash if
198 we set LD_PRELOAD sandbox side already.
199
200 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
201 Move print_sandbox_log() up to make things neater.
202
203 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
204 Remove load_preload_libs(), as its not used anymore.
205
206 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
207 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
208
209 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
210 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
211
212 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
213 Remove ld.so.preload crap - we are not going to use it again.
214
215 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
216 Fix typo in code that checks if we got valid group information, causing a
217 segmentation fault, bug #91637.
218
219 * sandbox-1.2.6 (2005/05/10)
220
221 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
222 Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
223 for some odd reason, bug #91541.
224
225 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
226 Fix typo (sizeof -> strlen).
227
228 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
229 rewrote the sbcontext caching code so it accounts for env changes since lib
230 initialization.
231
232 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
233 We create libctest.c via configure, so no need to keep it around. Do some
234 cleanup related to libctest.c and libctest during configure.
235
236 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
237 Add rename support of symlinks pointing to protected files/directories.
238
239 * sandbox-1.2.5 (2005/05/04)
240
241 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
242 sandbox.bashrc:
243 Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
244 already set, init of the env vars fails for some reason, so do this later on,
245 and do not warn (bug #91431).
246
247 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
248 sandbox.bashrc:
249 Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
250
251 * sandbox-1.2.4 (2005/05/03)
252
253 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
254 Do not init the env entries with each call, as it creates too many calls to
255 lstat, etc. Should speedup things a bit, bug #91040.
256
257 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
258 Add /dev/pty to default write list. Noticed by Morfic.
259
260 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
261 sandbox.h:
262 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
263 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
264
265 * sandbox-1.2.3 (2005/04/29)
266
267 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
268 Do not check for (*&#$(* CXX or F77.
269
270 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
271 Do not append '/' to pathname in filter_path() if it already ends with it.
272
273 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
274 With az's help, clean up autotools to work with cross-compiling.
275
276 * sandbox-1.2.2 (2005/04/28)
277
278 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
279 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
280 have issues; bug #90592.
281
282 * sandbox-1.2.1 (2005/04/23)
283
284 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
285 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
286 Make sure all functions used in libsandbox.c is declared static. Define
287 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
288 linking with its object. Hopefully this will fix bug #90153.
289
290 * sandbox-1.2 (2005/04/23)
291
292 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
293 Allow lchown a symlink in write-allowed path pointing to write-denied
294 target.
295
296 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
297 Also show resolved symlink names in the log.
298
299 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
300 Seems -nostdlib was the problem with the constructor/destructor - remove it
301 from Makefile.am, and change the constructor/destructor names again.
302
303 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
304 Also rename the _init() and _fini() declarations.
305
306 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
307 Fixup the constructor/destructor function names again (they should be _init()
308 and _fini() it seems, and not being called caused sandbox_lib_path to be
309 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
310 Add both the path in given SANDBOX_x variable, as well as its symlink
311 resolved path in init_env_entries(). Modify filter_path() to be able to
312 resolve paths without resolving symlinks, as well as to be able to resolve
313 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
314 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
315 for bug #31019 cause access violations if we try to remove a symlink that is
316 not in protected path, but points to a protected path. Fix a memory leak in
317 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
318 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
319 (pid_string was uninitialized). General syntax cleanups.
320
321 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
322 infamous "pids file is not a regular file" w/out newline bug.
323
324 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
325 Correct libc_version path detection, since it was screwing up if libdir !=
326 "/lib/".
327
328 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
329 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
330
331 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
332 Fix symbols.in not added to dist.
333
334 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
335 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
336 White space fixes.
337
338 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
339 configure.in, getcwd.c, libsandbox.c, symbols.in:
340 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
341 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
342 for glibc and other libc's that use this. Update libsandbox.c to use these
343 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
344 process unset it.
345
346 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
347 killed off _init and _fini in favor of
348 void __attribute__ ((constructor)) init_func and
349 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
350
351 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
352 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
353 having the hick-ups.
354
355 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
356 Makefile.am: Fixed compilation.
357
358 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
359 Gutted the bugger so it stops checking for a c++ and fortran compiler.
360 Do *not* regenerate aclocal.m4 for making a release until a better
361 solution is created.
362
363 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
364 Removal of more hardcoded paths.
365
366 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
367 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
368
369 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
370 Sandbox is now autotooled, create-localdecls needs to be killed and the code
371 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
372 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
373 To get to a point of testing, automake && autoconf; created requisite files w/
374 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
375 /lib and /usr/lib/portage/bin.
376
377 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
378 closing out bug #70225, potential overflow of the sandbox_pids_file var.
379
380 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
381 (think it was at least) allows intermixing of code and data segments. bug #70351
382 should be fixed by this.
383
384 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
385 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
386
387 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
388 Seth Robertson that tracked down all adjuct flags for read operations that
389 do not invoke a write operation.
390
391 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
392 Another fix from jstubbs regarding a free() on a stack variable for the
393 environment -- tracking now prevents extraneous free()'s segfault.
394
395 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
396 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
397 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
398 Also remove the errno = ESUCCESS settings as documentation points out that
399 a library isn't allowed to do that.
400
401 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
402 file_security_check() function to check random potential exploits on files
403 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
404 the 'system-crippling' exploits (bug 21923) and catches a few other
405 potential problems.
406
407 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
408 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
409
410 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
411 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
412 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
413
414 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
415 Fix permissions and group of pids file and logs. Permissions should be 0664
416 and group should be 'portage'. Bug #34260.
417
418 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
419 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
420 to the real execve (in our execve wrapper). Seems that on some arches (sparc
421 among others) do not allow us to tamper with the readonly copy passed to
422 execve, so pass our own copy of the environment. Bug #42290.
423
424 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
425 Changed tail to head and added a notice about duration of glibc check.
426
427 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
428 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
429 as there isn't a guarentee that it is dynamic.
430
431 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
432 If 'file' passed to before_syscall(const char *func, const char *file) is
433 invalid, we should set errno to ENOENT, and not EINVAL. This should
434 close bug #32238.
435
436 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
437 Fix a bug that occurs mainly on 64bit arch, where the file passed to
438 the functions we wrap, is invalid, and then cause canonicalize to pass
439 garbage to before_syscall(), thanks to great detective work from
440 Andrea Luzzardi <al@sig11.org> (bug #29846).
441
442 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
443 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
444
445 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
446 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
447 only checked the destination patch, and not the source, so we could move
448 a protected file to a unprotected directory, and then delete/modify it.
449 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
450
451 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
452 Added python2.3 to the predict section/variable.
453
454 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
455 sandbox.h, sandbox_futils.c :
456 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
457 it is not set, it will revert to its old value.
458
459 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
460 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
461 rather than failing with a violation, bug #29748.
462
463 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
464 Fix canonicalize() to ignore calls with path = "".
465
466 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
467 sandbox_futils.c, canonicalize.c :
468 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
469 call handled strings larger than PATH_MAX (bug #21766). It however does not
470 work the same on 2.4 kernels.
471
472 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
473 do not need the system call. We use the default getcwd() function via a
474 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
475 means the current directory was removed, OR that the the system call for
476 getcwd failed (curious is that it do not fail and return NULL or set
477 errno, but rather just truncate the retured directory - usually from the
478 start), and if so, we use the generic getcwd() function (__egetcwd). Note
479 that we do not use the generic version all the time, as it calls lstat()
480 a great number of times, and performance degrade much.
481
482 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
483 libsandbox.c :
484 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
485
486 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
487 create-localdecls :
488 When checking path names of files accessed, we need to canonicalize it, else
489 it may be a symlink in a 'write allowed' directory pointing to a file in a
490 directory we should not have write access to.
491
492 With something like coreutils-5.0, we have two problems:
493 1) One of the tests checks if getcwd() can return a path longer than
494 PATH_MAX. This test then tries to create a dir which even while
495 created local (mkdir("conftest2")), it ends up being resolved with
496 a name that is much larger than PATH_MAX. The problem now is that
497 canonicalize() have undefined behaviour when the path was too long
498 (returned wrongly truncated paths, etc), and pass the wrong path to
499 before_syscall() (causing the bogus sandbox violations).
500 2) The ecanonicalize() function we used, along with the canonicalize()
501 function did not support longer than PATH_MAX. This is partly a
502 cause for 1), but the error checking (rather lack of it) of calls
503 to erealpath() in canonicalize() was the prime reason for 1).
504
505 As we do not use this canonicalized name to call the function, we resolve this
506 by fixing canonicalize() to do better error checking, and ecanonicalize() as
507 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
508 While they will resolve paths properly now, and can check if a write/read is
509 allowed, the functions called from the sandboxed environment will still work
510 as expected.
511
512 This should resolve bug #21766.
513
514 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
515 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
516 it (bug #16298).
517
518 Problem is that for some reason locale fopen's locale.alias with mode "rm".
519
520 -------------------------------------------------------
521 nosferatu root # grep fopen locale.log
522 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
523 nosferatu root #
524 --------------------------------------------------------
525
526 I checked the source of locale, but it have fopen with mode 'r', so
527 not sure where the "rm" mode comes from. Anyhow, changed the check in
528 before_syscall_open_char() to also see mode "rm" as readonly.
529
530 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
531
532 Add glibc-2.3 support.
533
534 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
535
536 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
537 operations releated to preload, as well as only try to modify ld.so.preload
538 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
539 not using ld.so.preload. Fix to not write this instance of sandbox's pid
540 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
541
542 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
543
544 Changed the LD to CC for hppa.
545
546 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
547
548 Killed the previous changes I made.
549
550 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
551
552 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
553
554 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
555
556 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
557
558 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
559
560 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
561 for this fix.
562
563 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
564
565 sandbox_futils defined a dirname() function that was masking the same
566 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
567 '/usr/lib/portage/bi/'). Fixed function to return expected results and
568 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
569 11231.
570
571 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
572
573 Fix a segfault in libsandbox.c if canonicalize() was called with
574 first parameter = NULL.
575
576 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
577
578 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
579 cleanup() for this.
580
581 Change cleanup() in sandbox.c not to exit with fail status if
582 the pidsfile is missing. We really should still display sandbox
583 violations if they occured.
584
585 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
586
587 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
588 the last sandbox running.
589
590 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
591
592 Major cleanups to mainly libsandbox.c again.
593
594 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
595
596 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
597 parties involved should please contact me so that we can fix it.
598
599 Add opendir wrapper to libsandbox.c.
600
601 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
602
603 Do some more cleanups to ecanonicalize(), as it dropped filenames in
604 rare cases (after my symlink cleanups), and caused glibc to bork.
605 These fixes went into canonicalize.c.
606
607 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
608
609 Fix spawn_shell() and main() in sandbox.c to properly return fail
610 status.
611
612 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
613
614 The new canonicalize() function in libsandbox.c also resolved symlinks,
615 which caused on cleaning sandbox errors if the symlink pointed to a
616 file in the live root. Ripped out canonicalize() and realpath() from
617 glibc; removed the symlink stuff, and changed them to ecanonicalize()
618 and erealpath().
619
620 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
621
622 Ripped out all the wrappers, and implemented those of InstallWatch.
623 Losts of cleanups and bugfixes. Implement a execve that forces
624 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
625 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
626 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
627 parts; it now have an install target.
628
629 Reformat the whole thing to look somewhat like the reworked sandbox.c
630 and new sandbox.h and sandbox_futils.c from:
631
632 Brad House <brad@mainstreetsoftworks.com>.
633
634 Additional Copyrights now due to the InstallWatch code:
635
636 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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