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Revision 158 - (show annotations) (download)
Fri Aug 5 13:58:53 2005 UTC (8 years, 8 months ago) by azarah
File size: 28319 byte(s)
Remove the tmp_dir variable - we do not need it.
1 # ChangeLog for Path Sandbox
2 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 # $Header$
4
5 05 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
6
7 Do not give an access violation if the access() system call do not have
8 write/read access - it does not actually modify, so we only need to return
9 not being able to write/read. Noted by Andres Loeh <kosmikus@gentoo.org>,
10 bug #101433.
11
12 If we are called from the command line, do not care about PORTAGE_TMPDIR,
13 and make the current directory the work directory. Also rename the variable
14 portage_tmp_dir to work_dir.
15
16 Remove the tmp_dir variable - we do not need it.
17
18 01 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
19
20 Still do normal log if debugging is requested.
21
22 Add support for SANDBOX_VERBOSE (enabled by default). Adjust SANDBOX_DEBUG
23 to only enable if equal to "1" or "yes".
24
25 Add /dev/tts to write permit, bug #42809.
26
27 27 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
28 sandbox_futils.c:
29
30 Do not resolve symlinks in PORTAGE_TMPDIR in sandbox .. we will handle that
31 in libsandbox .. bug #100309.
32
33 22 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h:
34
35 Print all logging to stderr, bug #90343, comment #15, by Zac Medico.
36
37 * sandbox-1.2.11 (2005/07/14)
38
39 14 July 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
40 Fix getcwd, bug #98419.
41
42 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
43 libsandbox.c:
44 - Try to cleanup and make error handling/printing consistent.
45 - Remove old logs if present and conflicting with current.
46 - Fix compile error with previous change, and return rather then exit().
47
48 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
49 sandbox.h, sandbox_futils.c:
50 - Fix possible segfault in env init code.
51 - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
52 write to /var/log/sandbox/, so in theory do not need all that.
53 - Redo the interface of the get_* functions so that we do not leak memory.
54 - Remove sandbox_dir and co - we are not using it anymore.
55 - Remove unused includes and variables.
56 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
57 OUTSIDE_LIBSANDBOX is not defined.
58 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
59 printing's last line not honouring NOCOLOR.
60
61 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
62 libsandbox.c:
63 - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
64 write to it.
65 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
66 - Add check_prefixes() with major cleanup on check_access().
67 - Cleanup init_env_entries() and check_prefixes().
68
69 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
70 sandbox_futils.c, libsandbox.c:
71 Remove unused 'pids file' code.
72
73 * sandbox-1.2.10 (2005/07/03)
74
75 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
76 Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
77
78 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
79 General cleanups:
80 - Remove fooling around with exit codes - we error out on presence of a log
81 anyhow.
82 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
83 appropriate there.
84
85 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
86 Cleanup the fail_nametoolong stuff a bit more.
87
88 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
89 Remove hopefully the last ld.so.preload bits we do not use anymore.
90
91 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
92 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
93 in check_syscall(). Should speed things up a bit (at least for the getcwd()
94 and long path name test it goes down to under a second, and not 10+ seconds
95 like before). Also warn if we skip checking due to the canonicalized path
96 being too long.
97
98 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
99 More comment/readability cleanups.
100
101 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
102 sandbox_futils.c, libsandbox.c:
103 Some strncpy/strncat and other cleanups.
104
105 * sandbox-1.2.9 (2005/06/09)
106
107 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
108 Move symlink hack down a bit to try and minimize on the amount of lstat()
109 calls we do.
110
111 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
112 Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
113
114 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
115 Add wrapper for access() function, bug #85413.
116
117 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
118 Use generic getcwd() implementation from uclibc - should be more portable
119 and looks a bit cleaner.
120
121 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
122 Make sure our true_* pointers are initialized to NULL, and that we check for
123 all references that they are valid.
124
125 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
126 Be default we will fail if the path name we try to canonicalize is too long.
127 This however could cause issues with some things (bug #94630 and #21766), so
128 if fail_nametoolong == 0, canonicalize() will return a null length string and
129 do not fail.
130
131 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
132 Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
133 make sure we re-export the new TMPDIR environment variable.
134
135 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
136 Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
137 by Marcus D. Hanwell <cryos@gentoo.org>.
138
139 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
140 Add /dev/console to write list, bug #38588.
141
142 * sandbox-1.2.8 (2005/05/13)
143
144 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
145 sandbox.h, sandbox_futils.c:
146 General cleanups.
147
148 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
149 sandbox.h:
150 Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
151
152 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
153 sandbox.h, sandbox_futils.c:
154 Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
155 to use TMPDIR if present in environment.
156
157 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
158 Remove sandbox_log_file from main() as its no longer used.
159
160 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
161 sandbox_futils.c:
162 Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
163 if already exported when sandbox started). Fix get_sandbox_log() and new
164 get_sandbox_debug_log() to not use already exported environment variables if
165 they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
166 SB_PATH_MAX fixes.
167
168 * sandbox-1.2.7 (2005/05/12)
169
170 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
171 sandbox_futils.c:
172 More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
173
174 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
175 Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
176 with '(null)' in it if we did not call sandbox with absolute path.
177
178 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
179 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
180 for the child.
181
182 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
183 Remove global preload_adaptable as it is no longer used.
184
185 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
186 Rewrite environment stuff to only be set when execve'ing the child process
187 to try and avoid issues like bug #91541 that causes sandbox to crash if
188 we set LD_PRELOAD sandbox side already.
189
190 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
191 Move print_sandbox_log() up to make things neater.
192
193 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
194 Remove load_preload_libs(), as its not used anymore.
195
196 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
197 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
198
199 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
200 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
201
202 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
203 Remove ld.so.preload crap - we are not going to use it again.
204
205 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
206 Fix typo in code that checks if we got valid group information, causing a
207 segmentation fault, bug #91637.
208
209 * sandbox-1.2.6 (2005/05/10)
210
211 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
212 Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
213 for some odd reason, bug #91541.
214
215 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
216 Fix typo (sizeof -> strlen).
217
218 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
219 rewrote the sbcontext caching code so it accounts for env changes since lib
220 initialization.
221
222 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
223 We create libctest.c via configure, so no need to keep it around. Do some
224 cleanup related to libctest.c and libctest during configure.
225
226 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
227 Add rename support of symlinks pointing to protected files/directories.
228
229 * sandbox-1.2.5 (2005/05/04)
230
231 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
232 sandbox.bashrc:
233 Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
234 already set, init of the env vars fails for some reason, so do this later on,
235 and do not warn (bug #91431).
236
237 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
238 sandbox.bashrc:
239 Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
240
241 * sandbox-1.2.4 (2005/05/03)
242
243 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
244 Do not init the env entries with each call, as it creates too many calls to
245 lstat, etc. Should speedup things a bit, bug #91040.
246
247 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
248 Add /dev/pty to default write list. Noticed by Morfic.
249
250 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
251 sandbox.h:
252 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
253 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
254
255 * sandbox-1.2.3 (2005/04/29)
256
257 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
258 Do not check for (*&#$(* CXX or F77.
259
260 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
261 Do not append '/' to pathname in filter_path() if it already ends with it.
262
263 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
264 With az's help, clean up autotools to work with cross-compiling.
265
266 * sandbox-1.2.2 (2005/04/28)
267
268 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
269 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
270 have issues; bug #90592.
271
272 * sandbox-1.2.1 (2005/04/23)
273
274 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
275 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
276 Make sure all functions used in libsandbox.c is declared static. Define
277 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
278 linking with its object. Hopefully this will fix bug #90153.
279
280 * sandbox-1.2 (2005/04/23)
281
282 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
283 Allow lchown a symlink in write-allowed path pointing to write-denied
284 target.
285
286 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
287 Also show resolved symlink names in the log.
288
289 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
290 Seems -nostdlib was the problem with the constructor/destructor - remove it
291 from Makefile.am, and change the constructor/destructor names again.
292
293 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
294 Also rename the _init() and _fini() declarations.
295
296 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
297 Fixup the constructor/destructor function names again (they should be _init()
298 and _fini() it seems, and not being called caused sandbox_lib_path to be
299 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
300 Add both the path in given SANDBOX_x variable, as well as its symlink
301 resolved path in init_env_entries(). Modify filter_path() to be able to
302 resolve paths without resolving symlinks, as well as to be able to resolve
303 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
304 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
305 for bug #31019 cause access violations if we try to remove a symlink that is
306 not in protected path, but points to a protected path. Fix a memory leak in
307 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
308 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
309 (pid_string was uninitialized). General syntax cleanups.
310
311 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
312 infamous "pids file is not a regular file" w/out newline bug.
313
314 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
315 Correct libc_version path detection, since it was screwing up if libdir !=
316 "/lib/".
317
318 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
319 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
320
321 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
322 Fix symbols.in not added to dist.
323
324 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
325 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
326 White space fixes.
327
328 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
329 configure.in, getcwd.c, libsandbox.c, symbols.in:
330 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
331 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
332 for glibc and other libc's that use this. Update libsandbox.c to use these
333 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
334 process unset it.
335
336 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
337 killed off _init and _fini in favor of
338 void __attribute__ ((constructor)) init_func and
339 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
340
341 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
342 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
343 having the hick-ups.
344
345 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
346 Makefile.am: Fixed compilation.
347
348 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
349 Gutted the bugger so it stops checking for a c++ and fortran compiler.
350 Do *not* regenerate aclocal.m4 for making a release until a better
351 solution is created.
352
353 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
354 Removal of more hardcoded paths.
355
356 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
357 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
358
359 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
360 Sandbox is now autotooled, create-localdecls needs to be killed and the code
361 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
362 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
363 To get to a point of testing, automake && autoconf; created requisite files w/
364 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
365 /lib and /usr/lib/portage/bin.
366
367 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
368 closing out bug #70225, potential overflow of the sandbox_pids_file var.
369
370 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
371 (think it was at least) allows intermixing of code and data segments. bug #70351
372 should be fixed by this.
373
374 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
375 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
376
377 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
378 Seth Robertson that tracked down all adjuct flags for read operations that
379 do not invoke a write operation.
380
381 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
382 Another fix from jstubbs regarding a free() on a stack variable for the
383 environment -- tracking now prevents extraneous free()'s segfault.
384
385 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
386 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
387 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
388 Also remove the errno = ESUCCESS settings as documentation points out that
389 a library isn't allowed to do that.
390
391 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
392 file_security_check() function to check random potential exploits on files
393 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
394 the 'system-crippling' exploits (bug 21923) and catches a few other
395 potential problems.
396
397 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
398 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
399
400 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
401 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
402 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
403
404 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
405 Fix permissions and group of pids file and logs. Permissions should be 0664
406 and group should be 'portage'. Bug #34260.
407
408 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
409 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
410 to the real execve (in our execve wrapper). Seems that on some arches (sparc
411 among others) do not allow us to tamper with the readonly copy passed to
412 execve, so pass our own copy of the environment. Bug #42290.
413
414 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
415 Changed tail to head and added a notice about duration of glibc check.
416
417 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
418 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
419 as there isn't a guarentee that it is dynamic.
420
421 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
422 If 'file' passed to before_syscall(const char *func, const char *file) is
423 invalid, we should set errno to ENOENT, and not EINVAL. This should
424 close bug #32238.
425
426 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
427 Fix a bug that occurs mainly on 64bit arch, where the file passed to
428 the functions we wrap, is invalid, and then cause canonicalize to pass
429 garbage to before_syscall(), thanks to great detective work from
430 Andrea Luzzardi <al@sig11.org> (bug #29846).
431
432 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
433 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
434
435 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
436 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
437 only checked the destination patch, and not the source, so we could move
438 a protected file to a unprotected directory, and then delete/modify it.
439 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
440
441 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
442 Added python2.3 to the predict section/variable.
443
444 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
445 sandbox.h, sandbox_futils.c :
446 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
447 it is not set, it will revert to its old value.
448
449 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
450 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
451 rather than failing with a violation, bug #29748.
452
453 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
454 Fix canonicalize() to ignore calls with path = "".
455
456 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
457 sandbox_futils.c, canonicalize.c :
458 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
459 call handled strings larger than PATH_MAX (bug #21766). It however does not
460 work the same on 2.4 kernels.
461
462 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
463 do not need the system call. We use the default getcwd() function via a
464 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
465 means the current directory was removed, OR that the the system call for
466 getcwd failed (curious is that it do not fail and return NULL or set
467 errno, but rather just truncate the retured directory - usually from the
468 start), and if so, we use the generic getcwd() function (__egetcwd). Note
469 that we do not use the generic version all the time, as it calls lstat()
470 a great number of times, and performance degrade much.
471
472 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
473 libsandbox.c :
474 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
475
476 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
477 create-localdecls :
478 When checking path names of files accessed, we need to canonicalize it, else
479 it may be a symlink in a 'write allowed' directory pointing to a file in a
480 directory we should not have write access to.
481
482 With something like coreutils-5.0, we have two problems:
483 1) One of the tests checks if getcwd() can return a path longer than
484 PATH_MAX. This test then tries to create a dir which even while
485 created local (mkdir("conftest2")), it ends up being resolved with
486 a name that is much larger than PATH_MAX. The problem now is that
487 canonicalize() have undefined behaviour when the path was too long
488 (returned wrongly truncated paths, etc), and pass the wrong path to
489 before_syscall() (causing the bogus sandbox violations).
490 2) The ecanonicalize() function we used, along with the canonicalize()
491 function did not support longer than PATH_MAX. This is partly a
492 cause for 1), but the error checking (rather lack of it) of calls
493 to erealpath() in canonicalize() was the prime reason for 1).
494
495 As we do not use this canonicalized name to call the function, we resolve this
496 by fixing canonicalize() to do better error checking, and ecanonicalize() as
497 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
498 While they will resolve paths properly now, and can check if a write/read is
499 allowed, the functions called from the sandboxed environment will still work
500 as expected.
501
502 This should resolve bug #21766.
503
504 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
505 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
506 it (bug #16298).
507
508 Problem is that for some reason locale fopen's locale.alias with mode "rm".
509
510 -------------------------------------------------------
511 nosferatu root # grep fopen locale.log
512 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
513 nosferatu root #
514 --------------------------------------------------------
515
516 I checked the source of locale, but it have fopen with mode 'r', so
517 not sure where the "rm" mode comes from. Anyhow, changed the check in
518 before_syscall_open_char() to also see mode "rm" as readonly.
519
520 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
521
522 Add glibc-2.3 support.
523
524 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
525
526 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
527 operations releated to preload, as well as only try to modify ld.so.preload
528 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
529 not using ld.so.preload. Fix to not write this instance of sandbox's pid
530 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
531
532 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
533
534 Changed the LD to CC for hppa.
535
536 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
537
538 Killed the previous changes I made.
539
540 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
541
542 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
543
544 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
545
546 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
547
548 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
549
550 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
551 for this fix.
552
553 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
554
555 sandbox_futils defined a dirname() function that was masking the same
556 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
557 '/usr/lib/portage/bi/'). Fixed function to return expected results and
558 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
559 11231.
560
561 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
562
563 Fix a segfault in libsandbox.c if canonicalize() was called with
564 first parameter = NULL.
565
566 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
567
568 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
569 cleanup() for this.
570
571 Change cleanup() in sandbox.c not to exit with fail status if
572 the pidsfile is missing. We really should still display sandbox
573 violations if they occured.
574
575 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
576
577 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
578 the last sandbox running.
579
580 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
581
582 Major cleanups to mainly libsandbox.c again.
583
584 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
585
586 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
587 parties involved should please contact me so that we can fix it.
588
589 Add opendir wrapper to libsandbox.c.
590
591 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
592
593 Do some more cleanups to ecanonicalize(), as it dropped filenames in
594 rare cases (after my symlink cleanups), and caused glibc to bork.
595 These fixes went into canonicalize.c.
596
597 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
598
599 Fix spawn_shell() and main() in sandbox.c to properly return fail
600 status.
601
602 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
603
604 The new canonicalize() function in libsandbox.c also resolved symlinks,
605 which caused on cleaning sandbox errors if the symlink pointed to a
606 file in the live root. Ripped out canonicalize() and realpath() from
607 glibc; removed the symlink stuff, and changed them to ecanonicalize()
608 and erealpath().
609
610 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
611
612 Ripped out all the wrappers, and implemented those of InstallWatch.
613 Losts of cleanups and bugfixes. Implement a execve that forces
614 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
615 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
616 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
617 parts; it now have an install target.
618
619 Reformat the whole thing to look somewhat like the reworked sandbox.c
620 and new sandbox.h and sandbox_futils.c from:
621
622 Brad House <brad@mainstreetsoftworks.com>.
623
624 Additional Copyrights now due to the InstallWatch code:
625
626 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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