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# ChangeLog for Path Sandbox |
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# Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2 |
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# $Header$ |
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|
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12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c: |
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Rewrite environment stuff to only be set when execve'ing the child process |
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to try and avoid issues like bug #91541 that causes sandbox to crash if |
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we set LD_PRELOAD sandbox side already. |
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|
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11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c: |
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Move print_sandbox_log() up to make things neater. |
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|
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11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c: |
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Remove load_preload_libs(), as its not used anymore. |
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|
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11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h: |
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Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine. |
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|
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11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h: |
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Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use. |
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|
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11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h: |
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Remove ld.so.preload crap - we are not going to use it again. |
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|
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10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c: |
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Fix typo in code that checks if we got valid group information, causing a |
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segmentation fault, bug #91637. |
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|
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* sandbox-1.2.6 (2005/05/10) |
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|
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10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c: |
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Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox |
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for some odd reason, bug #91541. |
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|
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09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c: |
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Fix typo (sizeof -> strlen). |
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|
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08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c: |
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rewrote the sbcontext caching code so it accounts for env changes since lib |
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initialization. |
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|
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05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c: |
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We create libctest.c via configure, so no need to keep it around. Do some |
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cleanup related to libctest.c and libctest during configure. |
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|
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04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c: |
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Add rename support of symlinks pointing to protected files/directories. |
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|
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* sandbox-1.2.5 (2005/05/04) |
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|
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04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c, |
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sandbox.bashrc: |
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Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is |
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already set, init of the env vars fails for some reason, so do this later on, |
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and do not warn (bug #91431). |
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|
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03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h, |
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sandbox.bashrc: |
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Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc. |
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|
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* sandbox-1.2.4 (2005/05/03) |
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|
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03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c: |
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Do not init the env entries with each call, as it creates too many calls to |
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lstat, etc. Should speedup things a bit, bug #91040. |
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|
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03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c: |
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Add /dev/pty to default write list. Noticed by Morfic. |
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|
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02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h, |
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sandbox.h: |
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uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't |
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exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc. |
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|
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* sandbox-1.2.3 (2005/04/29) |
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|
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29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in: |
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Do not check for (*&#$(* CXX or F77. |
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|
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29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c: |
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Do not append '/' to pathname in filter_path() if it already ends with it. |
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|
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28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in: |
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With az's help, clean up autotools to work with cross-compiling. |
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|
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* sandbox-1.2.2 (2005/04/28) |
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|
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28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c: |
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Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm |
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have issues; bug #90592. |
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|
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* sandbox-1.2.1 (2005/04/23) |
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|
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23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c, |
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getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c: |
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Make sure all functions used in libsandbox.c is declared static. Define |
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SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than |
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linking with its object. Hopefully this will fix bug #90153. |
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|
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* sandbox-1.2 (2005/04/23) |
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|
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22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c: |
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Allow lchown a symlink in write-allowed path pointing to write-denied |
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target. |
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|
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21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c: |
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Also show resolved symlink names in the log. |
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|
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14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c: |
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Seems -nostdlib was the problem with the constructor/destructor - remove it |
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from Makefile.am, and change the constructor/destructor names again. |
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|
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14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c: |
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Also rename the _init() and _fini() declarations. |
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|
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14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c: |
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Fixup the constructor/destructor function names again (they should be _init() |
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and _fini() it seems, and not being called caused sandbox_lib_path to be |
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unset, and thus breaking the execve() wrapper's LD_PRELOAD protection). |
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Add both the path in given SANDBOX_x variable, as well as its symlink |
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resolved path in init_env_entries(). Modify filter_path() to be able to |
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resolve paths without resolving symlinks, as well as to be able to resolve |
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symlinks. Fix a possible segfault in check_access(). Add symlink resolving |
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to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix |
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for bug #31019 cause access violations if we try to remove a symlink that is |
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not in protected path, but points to a protected path. Fix a memory leak in |
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sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main() |
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(sandbox.c) being unchecked. Fix the debug logname not having the pid in it |
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(pid_string was uninitialized). General syntax cleanups. |
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|
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09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the |
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infamous "pids file is not a regular file" w/out newline bug. |
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|
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09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in: |
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Correct libc_version path detection, since it was screwing up if libdir != |
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"/lib/". |
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|
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02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c: |
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Hack to make sure sandboxed process cannot remove a device node, bug #79836. |
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|
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02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am: |
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Fix symbols.in not added to dist. |
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|
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02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c, |
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getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c: |
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White space fixes. |
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|
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02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c, |
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configure.in, getcwd.c, libsandbox.c, symbols.in: |
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Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in |
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getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions |
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for glibc and other libc's that use this. Update libsandbox.c to use these |
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symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the |
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process unset it. |
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|
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01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c: |
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killed off _init and _fini in favor of |
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void __attribute__ ((constructor)) init_func and |
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void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated. |
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|
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06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c, |
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canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done |
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having the hick-ups. |
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|
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04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c, |
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Makefile.am: Fixed compilation. |
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|
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01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4: |
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Gutted the bugger so it stops checking for a c++ and fortran compiler. |
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Do *not* regenerate aclocal.m4 for making a release until a better |
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solution is created. |
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|
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20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c: |
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Removal of more hardcoded paths. |
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|
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20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in, |
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sandbox_futils.c: tweaks to install sandbox.bashrc, and use it. |
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|
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19 Nov 2004; Brian Harring <ferringb@gentoo.org>: |
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Sandbox is now autotooled, create-localdecls needs to be killed and the code |
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shifted into configure.in. Currently builds *one* libsandbox.so- if multiple |
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are desired (-m64 and -m32 for amd64), the ebuild should do it (imo). |
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To get to a point of testing, automake && autoconf; created requisite files w/ |
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a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of |
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/lib and /usr/lib/portage/bin. |
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|
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14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c: |
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closing out bug #70225, potential overflow of the sandbox_pids_file var. |
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|
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07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard, |
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(think it was at least) allows intermixing of code and data segments. bug #70351 |
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should be fixed by this. |
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|
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03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c: |
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futils fix from bug #65201 via solar, and libsandbox log path checks via #69137 |
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|
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02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from |
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Seth Robertson that tracked down all adjuct flags for read operations that |
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do not invoke a write operation. |
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|
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04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c: |
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Another fix from jstubbs regarding a free() on a stack variable for the |
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environment -- tracking now prevents extraneous free()'s segfault. |
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|
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04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c: |
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J. Stubbs tracked down a new bug where mkdir was failing to the patch on |
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the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir. |
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Also remove the errno = ESUCCESS settings as documentation points out that |
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a library isn't allowed to do that. |
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|
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04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a |
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file_security_check() function to check random potential exploits on files |
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that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes |
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the 'system-crippling' exploits (bug 21923) and catches a few other |
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potential problems. |
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|
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20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for |
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32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work. |
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|
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20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: |
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bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>. |
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Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>. |
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|
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29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c : |
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Fix permissions and group of pids file and logs. Permissions should be 0664 |
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and group should be 'portage'. Bug #34260. |
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|
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28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed |
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to the real execve (in our execve wrapper). Seems that on some arches (sparc |
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among others) do not allow us to tamper with the readonly copy passed to |
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execve, so pass our own copy of the environment. Bug #42290. |
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|
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11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls: |
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Changed tail to head and added a notice about duration of glibc check. |
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|
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21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls: |
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Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh |
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as there isn't a guarentee that it is dynamic. |
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|
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02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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If 'file' passed to before_syscall(const char *func, const char *file) is |
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invalid, we should set errno to ENOENT, and not EINVAL. This should |
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close bug #32238. |
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|
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14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Fix a bug that occurs mainly on 64bit arch, where the file passed to |
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the functions we wrap, is invalid, and then cause canonicalize to pass |
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garbage to before_syscall(), thanks to great detective work from |
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Andrea Luzzardi <al@sig11.org> (bug #29846). |
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|
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13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls : |
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Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>. |
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|
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13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically |
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only checked the destination patch, and not the source, so we could move |
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a protected file to a unprotected directory, and then delete/modify it. |
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Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix. |
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|
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12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c : |
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Added python2.3 to the predict section/variable. |
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|
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28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c, |
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sandbox.h, sandbox_futils.c : |
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Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If |
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it is not set, it will revert to its old value. |
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|
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27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so, |
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rather than failing with a violation, bug #29748. |
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|
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27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Fix canonicalize() to ignore calls with path = "". |
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|
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27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c, |
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sandbox_futils.c, canonicalize.c : |
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Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system |
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call handled strings larger than PATH_MAX (bug #21766). It however does not |
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work the same on 2.4 kernels. |
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|
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To fix, I added the posix implementation of getcwd() (from glibc cvs) that |
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do not need the system call. We use the default getcwd() function via a |
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wrapper (egetcwd), and then lstat the returned path. If lstat fails, it |
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means the current directory was removed, OR that the the system call for |
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getcwd failed (curious is that it do not fail and return NULL or set |
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errno, but rather just truncate the retured directory - usually from the |
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start), and if so, we use the generic getcwd() function (__egetcwd). Note |
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that we do not use the generic version all the time, as it calls lstat() |
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a great number of times, and performance degrade much. |
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|
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29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls, |
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libsandbox.c : |
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Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks. |
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|
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22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c |
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create-localdecls : |
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When checking path names of files accessed, we need to canonicalize it, else |
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it may be a symlink in a 'write allowed' directory pointing to a file in a |
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directory we should not have write access to. |
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|
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With something like coreutils-5.0, we have two problems: |
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1) One of the tests checks if getcwd() can return a path longer than |
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PATH_MAX. This test then tries to create a dir which even while |
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created local (mkdir("conftest2")), it ends up being resolved with |
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a name that is much larger than PATH_MAX. The problem now is that |
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canonicalize() have undefined behaviour when the path was too long |
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(returned wrongly truncated paths, etc), and pass the wrong path to |
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before_syscall() (causing the bogus sandbox violations). |
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2) The ecanonicalize() function we used, along with the canonicalize() |
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function did not support longer than PATH_MAX. This is partly a |
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cause for 1), but the error checking (rather lack of it) of calls |
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to erealpath() in canonicalize() was the prime reason for 1). |
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|
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As we do not use this canonicalized name to call the function, we resolve this |
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by fixing canonicalize() to do better error checking, and ecanonicalize() as |
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well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'. |
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While they will resolve paths properly now, and can check if a write/read is |
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allowed, the functions called from the sandboxed environment will still work |
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as expected. |
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|
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This should resolve bug #21766. |
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|
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06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under |
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it (bug #16298). |
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|
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Problem is that for some reason locale fopen's locale.alias with mode "rm". |
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|
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------------------------------------------------------- |
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nosferatu root # grep fopen locale.log |
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fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias |
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nosferatu root # |
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-------------------------------------------------------- |
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|
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I checked the source of locale, but it have fopen with mode 'r', so |
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not sure where the "rm" mode comes from. Anyhow, changed the check in |
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before_syscall_open_char() to also see mode "rm" as readonly. |
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|
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23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls : |
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|
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Add glibc-2.3 support. |
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|
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22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c : |
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|
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Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all |
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operations releated to preload, as well as only try to modify ld.so.preload |
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if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when |
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not using ld.so.preload. Fix to not write this instance of sandbox's pid |
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to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running. |
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|
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22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile : |
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|
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Changed the LD to CC for hppa. |
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|
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22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls : |
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|
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Killed the previous changes I made. |
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|
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17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls : |
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|
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Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs. |
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|
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09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c : |
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|
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Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868. |
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|
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16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls : |
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|
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Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro> |
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for this fix. |
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|
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4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c : |
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|
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sandbox_futils defined a dirname() function that was masking the same |
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function in glibc and was broken (e.g.: SANDBOX_DIR was being set to |
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'/usr/lib/portage/bi/'). Fixed function to return expected results and |
| 378 |
renamed it to sb_dirname() to no longer mask the glibc function. Closes bug |
| 379 |
11231. |
| 380 |
|
| 381 |
4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> : |
| 382 |
|
| 383 |
Fix a segfault in libsandbox.c if canonicalize() was called with |
| 384 |
first parameter = NULL. |
| 385 |
|
| 386 |
1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> : |
| 387 |
|
| 388 |
Fix my braindead 'return 1;' in a void function. Updated sandbox.c, |
| 389 |
cleanup() for this. |
| 390 |
|
| 391 |
Change cleanup() in sandbox.c not to exit with fail status if |
| 392 |
the pidsfile is missing. We really should still display sandbox |
| 393 |
violations if they occured. |
| 394 |
|
| 395 |
31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
| 396 |
|
| 397 |
Update cleanup() in sandbox.c to remove the PIDSFILE if this is |
| 398 |
the last sandbox running. |
| 399 |
|
| 400 |
25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
| 401 |
|
| 402 |
Major cleanups to mainly libsandbox.c again. |
| 403 |
|
| 404 |
22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
| 405 |
|
| 406 |
Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the |
| 407 |
parties involved should please contact me so that we can fix it. |
| 408 |
|
| 409 |
Add opendir wrapper to libsandbox.c. |
| 410 |
|
| 411 |
21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
| 412 |
|
| 413 |
Do some more cleanups to ecanonicalize(), as it dropped filenames in |
| 414 |
rare cases (after my symlink cleanups), and caused glibc to bork. |
| 415 |
These fixes went into canonicalize.c. |
| 416 |
|
| 417 |
20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
| 418 |
|
| 419 |
Fix spawn_shell() and main() in sandbox.c to properly return fail |
| 420 |
status. |
| 421 |
|
| 422 |
19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
| 423 |
|
| 424 |
The new canonicalize() function in libsandbox.c also resolved symlinks, |
| 425 |
which caused on cleaning sandbox errors if the symlink pointed to a |
| 426 |
file in the live root. Ripped out canonicalize() and realpath() from |
| 427 |
glibc; removed the symlink stuff, and changed them to ecanonicalize() |
| 428 |
and erealpath(). |
| 429 |
|
| 430 |
18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
| 431 |
|
| 432 |
Ripped out all the wrappers, and implemented those of InstallWatch. |
| 433 |
Losts of cleanups and bugfixes. Implement a execve that forces |
| 434 |
$LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared |
| 435 |
/etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c, |
| 436 |
sandbox.h and sandbox_futils.c. Rewrote the Makefile for most |
| 437 |
parts; it now have an install target. |
| 438 |
|
| 439 |
Reformat the whole thing to look somewhat like the reworked sandbox.c |
| 440 |
and new sandbox.h and sandbox_futils.c from: |
| 441 |
|
| 442 |
Brad House <brad@mainstreetsoftworks.com>. |
| 443 |
|
| 444 |
Additional Copyrights now due to the InstallWatch code: |
| 445 |
|
| 446 |
Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net> |
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