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* From: Matthias Gerstner <matthias.gerstner@suse.de> Date: Wed, 27 Dec 2023 ↵Sam Hartman11 days
| | | | | | | | | | | | | | | 14:01:59 +0100 Subject: pam_namespace: protect_dir(): use O_DIRECTORY to prevent local DoS situations Origin: https://github.com/linux-pam/linux-pam/commit/031bb5a5d0d950253b68138b498dc93be69a64cb Bug-Debian: https://bugs.debian.org/1061097 Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2024-22365 Without O_DIRECTORY the path crawling logic is subject to e.g. FIFOs being placed in user controlled directories, causing the PAM module to block indefinitely during `openat()`. Pass O_DIRECTORY to cause the `openat()` to fail if the path does not refer to a directory. With this the check whether the final path element is a directory becomes unnecessary, drop it. Gbp-Pq: Name pam_namespace_o_directory
* pam_namespace: make sure the SIGCHLD handler is not reset too earlyDmitry V. Levin2022-07-16
| | | | | | * modules/pam_namespace/pam_namespace.c (inst_init): Make sure the SIGCHLD handler is not reset too early by moving the sigaction call right before the fork call.
* pam_namespace: use vendor specific namespace.conf and namespace.init as fallbackStefan Schubert2022-06-30
| | | | | | | | | | Use the vendor directory as fallback for a distribution provided default config and scripts if there is no configuration in /etc. pam_namespace.c: Take care about the fallback configuration in vendor directory. pam_namespace.h: Define vendor specific files and directories. pam_namespace.8.xml: Add description for vendor directories and files. namespace.conf.5.xml: Add description for vendor directories and files.
* pam_namespace: check for string_to_security_class failureChristian Göttsche2020-12-08
| | | | | | | | | | Check for the unlikely case string_to_security_class() does not find the associated SELinux security class. This will only happen if the loaded SELinux policy does not define the class "dir" (which no sane policy does) or querying the selinuxfs fails. Suggested by #309
* pam_namespace: skip context translationChristian Göttsche2020-08-05
| | | | | | | These retrieved contexts are just passed to libselinux functions and not printed or otherwise made available to the outside, so a context translation to human readable MCS/MLS labels is not needed. (see man:setrans.conf(5))
* pam_namespace: replace deprecated matchpathconChristian Göttsche2020-08-05
| | | | | The matchpathcon family is deprecated. Use the selabel family.
* pam_namespace: replace deprecated security_context_tChristian Göttsche2020-08-05
| | | | | libselinux 3.1 deprecated the typedef security_context_t. Use the underlaying type.
* pam_namespace, pam_mkhomedir: fix unlikely descriptor leaks on error pathikerexxe2020-07-01
| | | | | | | | | | | [ldv: rewrote commit message] * modules/pam_mkhomedir/mkhomedir_helper.c (create_homedir): Close just opened file descriptor "srcfd" in an unlikely case when it cannot be fstat'ed. * modules/pam_namespace/pam_namespace.c (create_instance): Close just opened file descriptor "fd" in an unlikely case when it cannot be fstat'ed.
* Fix various typos found using codespell toolDmitry V. Levin2020-03-28
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* modules/pam_namespace: use pam_str_skip_prefixDmitry V. Levin2020-03-19
| | | | | * modules/pam_namespace/pam_namespace.c (root_shared): Use pam_str_skip_prefix instead of ugly strncmp invocations.
* Use PAM_ARRAY_SIZEDmitry V. Levin2020-03-19
| | | | | | | | | | | | | | | | | | | | | Replace all instances of sizeof(x) / sizeof(*x) with PAM_ARRAY_SIZE(x) which is less error-prone and implements an additional type check. * libpam/pam_handlers.c: Include "pam_inline.h". (_pam_open_config_file): Use PAM_ARRAY_SIZE. * modules/pam_exec/pam_exec.c: Include "pam_inline.h". (call_exec): Use PAM_ARRAY_SIZE. * modules/pam_namespace/pam_namespace.c: Include "pam_inline.h". (filter_mntopts): Use PAM_ARRAY_SIZE. * modules/pam_timestamp/hmacfile.c: Include "pam_inline.h". (testvectors): Use PAM_ARRAY_SIZE. * modules/pam_xauth/pam_xauth.c: Include "pam_inline.h". (run_coprocess, pam_sm_open_session): Use PAM_ARRAY_SIZE. * tests/tst-pam_get_item.c: Include "pam_inline.h". (main): Use PAM_ARRAY_SIZE. * tests/tst-pam_set_item.c: Likewise. * xtests/tst-pam_pwhistory1.c: Likewise. * xtests/tst-pam_time1.c: Likewise.
* Fix remaining -Wcast-qual compilation warningsDmitry V. Levin2020-01-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce a new internal header file with definitions of DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL macros, use them to temporary silence -Wcast-qual compilation warnings in various modules. * libpam/include/pam_cc_compat.h: New file. * libpam/Makefile.am (noinst_HEADERS): Add include/pam_cc_compat.h. * modules/pam_mkhomedir/pam_mkhomedir.c: Include "pam_cc_compat.h". (create_homedir): Wrap execve invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_namespace/pam_namespace.c: Include "pam_cc_compat.h". (pam_sm_close_session): Wrap the cast that discards ‘const’ qualifier in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_tty_audit/pam_tty_audit.c: Include "pam_cc_compat.h". (nl_send): Wrap the cast that discards ‘const’ qualifier in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_unix/pam_unix_acct.c: Include "pam_cc_compat.h". (_unix_run_verify_binary): Wrap execve invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_unix/pam_unix_passwd.c: Include "pam_cc_compat.h". (_unix_run_update_binary): Wrap execve invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_unix/passverify.c: Include "pam_cc_compat.h". (unix_update_shadow): Wrap the cast that discards ‘const’ qualifier in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_unix/support.c: Include "pam_cc_compat.h". (_unix_run_helper_binary): Wrap execve invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_xauth/pam_xauth.c: Include "pam_cc_compat.h". (run_coprocess): Wrap execv invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL.
* Fix miscellaneous const issuesTomas Mraz2020-01-20
| | | | | | | | | | * libpam/pam_modutil_searchkey.c: Avoid assigning empty string literal to non-const char *. * modules/pam_filter/pam_filter.c: Avoid using const char **. * modules/pam_mkhomedir/pam_mkhomedir.c: Properly cast out const for execve(). * modules/pam_namespace/pam_namespace.c: Properly cast out const from pam data. * modules/pam_tally2/pam_tally2.c: String literal must be assigned to const char *.
* Miscellaneous spelling fixesSteve Langasek2020-01-15
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* pam_namespace: Support for noexec, nosuid and nodev flags for tmpfs mountsTomas Mraz2019-11-04
| | | | | | | | | | * modules/pam_namespace/namespace.conf.5.xml: Add documentation for the noexec, nosuid, and nodev flags support. * modules/pam_namespace/pam_namespace.c (filter_mntopts): New function to filter out the flags. (parse_method): Call the function. (ns_setup): Apply the flags to the tmpfs mount. * modules/pam_namespace/pam_namespace.h: Add mount_flags to polydir_s struct.
* Unification and cleanup of syslog log levels.Tomas Mraz2016-06-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * libpam/pam_handlers.c: Make memory allocation failures LOG_CRIT. * libpam/pam_modutil_priv.c: Make memory allocation failures LOG_CRIT. * modules/pam_echo/pam_echo.c: Make memory allocation failures LOG_CRIT. * modules/pam_env/pam_env.c: Make memory allocation failures LOG_CRIT. * modules/pam_exec/pam_exec.c: Make memory allocation failures LOG_CRIT. * modules/pam_filter/pam_filter.c: Make all non-memory call errors LOG_ERR. * modules/pam_group/pam_group.c: Make memory allocation failures LOG_CRIT. * modules/pam_issue/pam_issue.c: Make memory allocation failures LOG_CRIT. * modules/pam_lastlog/pam_lastlog.c: The lastlog file creation is syslogged with LOG_NOTICE, memory allocation errors with LOG_CRIT, other errors with LOG_ERR. * modules/pam_limits/pam_limits.c: User login limit messages are syslogged with LOG_NOTICE, stale utmp entry with LOG_INFO, non-memory errors with LOG_ERR. * modules/pam_listfile/pam_listfile.c: Rejection of user is syslogged with LOG_NOTICE. * modules/pam_namespace/pam_namespace.c: Make memory allocation failures LOG_CRIT. * modules/pam_nologin/pam_nologin.c: Make memory allocation failures LOG_CRIT, other errors LOG_ERR. * modules/pam_securetty/pam_securetty.c: Rejection of access is syslogged with LOG_NOTICE, non-memory errors with LOG_ERR. * modules/pam_selinux/pam_selinux.c: Make memory allocation failures LOG_CRIT. * modules/pam_succeed_if/pam_succeed_if.c: Make all non-memory call errors LOG_ERR. * modules/pam_time/pam_time.c: Make memory allocation failures LOG_CRIT. * modules/pam_timestamp/pam_timestamp.c: Make memory allocation failures LOG_CRIT. * modules/pam_unix/pam_unix_acct.c: Make all non-memory call errors LOG_ERR. * modules/pam_unix/pam_unix_passwd.c: Make memory allocation failures LOG_CRIT, other errors LOG_ERR. * modules/pam_unix/pam_unix_sess.c: Make all non-memory call errors LOG_ERR. * modules/pam_unix/passverify.c: Unknown user is syslogged with LOG_NOTICE. * modules/pam_unix/support.c: Unknown user is syslogged with LOG_NOTICE and max retries ignorance by application likewise. * modules/pam_unix/unix_chkpwd.c: Make all non-memory call errors LOG_ERR. * modules/pam_userdb/pam_userdb.c: Password authentication error is syslogged with LOG_NOTICE. * modules/pam_xauth/pam_xauth.c: Make memory allocation failures LOG_CRIT.
* Remove "--enable-static-modules" option and support fromThorsten Kukuk2016-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linux-PAM. It was never official supported and was broken since years. * configure.ac: Remove --enable-static-modules option. * doc/man/pam_sm_acct_mgmt.3.xml: Remove PAM_EXTERN. * doc/man/pam_sm_authenticate.3.xml: Likewise. * doc/man/pam_sm_chauthtok.3.xml: Likewise. * doc/man/pam_sm_close_session.3.xml: Likewise. * doc/man/pam_sm_open_session.3.xml: Likewise. * doc/man/pam_sm_setcred.3.xml: Likewise. * libpam/Makefile.am: Remove STATIC_MODULES cases. * libpam/include/security/pam_modules.h: Remove PAM_STATIC parts. * libpam/pam_dynamic.c: Likewise. * libpam/pam_handlers.c: Likewise. * libpam/pam_private.h: Likewise. * libpam/pam_static.c: Remove file. * libpam/pam_static_modules.h: Remove header file. * modules/pam_access/pam_access.c: Remove PAM_EXTERN and PAM_STATIC parts. * modules/pam_cracklib/pam_cracklib.c: Likewise. * modules/pam_debug/pam_debug.c: Likewise. * modules/pam_deny/pam_deny.c: Likewise. * modules/pam_echo/pam_echo.c: Likewise. * modules/pam_env/pam_env.c: Likewise. * modules/pam_exec/pam_exec.c: Likewise. * modules/pam_faildelay/pam_faildelay.c: Likewise. * modules/pam_filter/pam_filter.c: Likewise. * modules/pam_ftp/pam_ftp.c: Likewise. * modules/pam_group/pam_group.c: Likewise. * modules/pam_issue/pam_issue.c: Likewise. * modules/pam_keyinit/pam_keyinit.c: Likewise. * modules/pam_lastlog/pam_lastlog.c: Likewise. * modules/pam_limits/pam_limits.c: Likewise. * modules/pam_listfile/pam_listfile.c: Likewise. * modules/pam_localuser/pam_localuser.c: Likewise. * modules/pam_loginuid/pam_loginuid.c: Likewise. * modules/pam_mail/pam_mail.c: Likewise. * modules/pam_mkhomedir/pam_mkhomedir.c: Likewise. * modules/pam_motd/pam_motd.c: Likewise. * modules/pam_namespace/pam_namespace.c: Likewise. * modules/pam_nologin/pam_nologin.c: Likewise. * modules/pam_permit/pam_permit.c: Likewise. * modules/pam_pwhistory/pam_pwhistory.c: Likewise. * modules/pam_rhosts/pam_rhosts.c: Likewise. * modules/pam_rootok/pam_rootok.c: Likewise. * modules/pam_securetty/pam_securetty.c: Likewise. * modules/pam_selinux/pam_selinux.c: Likewise. * modules/pam_sepermit/pam_sepermit.c: Likewise. * modules/pam_shells/pam_shells.c: Likewise. * modules/pam_stress/pam_stress.c: Likewise. * modules/pam_succeed_if/pam_succeed_if.c: Likewise. * modules/pam_tally/pam_tally.c: Likewise. * modules/pam_tally2/pam_tally2.c: Likewise. * modules/pam_time/pam_time.c: Likewise. * modules/pam_timestamp/pam_timestamp.c: Likewise. * modules/pam_tty_audit/pam_tty_audit.c: Likewise. * modules/pam_umask/pam_umask.c: Likewise. * modules/pam_userdb/pam_userdb.c: Likewise. * modules/pam_warn/pam_warn.c: Likewise. * modules/pam_wheel/pam_wheel.c: Likewise. * modules/pam_xauth/pam_xauth.c: Likewise. * modules/pam_unix/Makefile.am: Remove STATIC_MODULES part. * modules/pam_unix/pam_unix_acct.c: Remove PAM_STATIC part. * modules/pam_unix/pam_unix_auth.c: Likewise. * modules/pam_unix/pam_unix_passwd.c: Likewise. * modules/pam_unix/pam_unix_sess.c: Likewise. * modules/pam_unix/pam_unix_static.c: Removed. * modules/pam_unix/pam_unix_static.h: Removed. * po/POTFILES.in: Remove removed files. * tests/tst-dlopen.c: Remove PAM_STATIC part.
* pam_namespace: don't use bashisms in default namespace.init scriptSteve Langasek2014-01-15
| | | | | | | | | | | | | | | | | | | | | | | | | * modules/pam_namespace/pam_namespace.c: call setuid() before execing the namespace init script, so that scripts run with maximum privilege regardless of the shell implementation. * modules/pam_namespace/namespace.init: drop the '-p' bashism from the shebang line This is not a POSIX standard option, it's a bashism. The bash manpage says that it's used to prevent the effective user id from being reset to the real user id on startup, and to ignore certain unsafe variables from the environment. In the case of pam_namespace, the -p is not necessary for environment sanitizing because the PAM module (properly) sanitizes the environment before execing the script. The stated reason given in CVS history for passing -p is to "preserve euid when called from setuid apps (su, newrole)." This should be done more portably, by calling setuid() before spawning the shell. Signed-off-by: Steve Langasek <vorlon@debian.org> Bug-Debian: http://bugs.debian.org/624842 Bug-Ubuntu: https://bugs.launchpad.net/bugs/1081323
* pam_namespace: add mntopts flag for tmpfs mount optionsTomas Mraz2012-10-10
| | | | | | | | | modules/pam_namespace/pam_namespace.h: Add mount_opts member to polydir structure. modules/pam_namespace/pam_namespace.c (del_polydir): Free the mount_opts. (parse_method): Parse the mntopts flag. (ns_setup): Pass the mount_opts to mount(). modules/pam_namespace/namespace.conf.5.xml: Document the mntopts flag.
* Do not unmount anything by default in pam_namespace close session call.Tomas Mraz2012-01-26
| | | | | | | | * modules/pam_namespace/pam_namespace.c (pam_sm_close_session): Recognize the unmount_on_close option and make the default to be to not unmount. * modules/pam_namespace/pam_namespace.h: Rename PAMNS_NO_UNMOUNT_ON_CLOSE to PAMNS_UNMOUNT_ON_CLOSE. * modules/pam_namespace/pam_namespace.8.xml: Document the change.
* Make / mount as rslave instead of bind mounting polydirs.Tomas Mraz2012-01-24
| | | | | | | | | * modules/pam_namespace/pam_namespace.c (protect_dir): Drop the always argument. (check_inst_parent): Drop the always argument from protect_dir(). (create_polydir): Likewise. (ns_setup): Likewise and do not mark the polydir with MS_PRIVATE. (setup_namespace): Mark the / with MS_SLAVE|MS_REC. * modules/pam_namespace/pam_namespace.8.xml: Reflect the change in docs.
* Fix whitespace issuesDmitry V. Levin2011-10-26
| | | | | | Cleanup trailing whitespaces, indentation that uses spaces before tabs, and blank lines at EOF. Make the project free of warnings reported by git diff --check 4b825dc642cb6eb9a060e54bf8d69288fbee4904 HEAD
* Detect the shared / mount and enable private mounts based on that.Tomas Mraz2011-06-07
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* Add support for the mount_private option to pam_namespace.Tomas Mraz2011-06-02
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* Relevant BUGIDs:Tomas Mraz2011-03-18
| | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2011-03-18 Tomas Mraz <tm@t8m.info> * modules/pam_namespace/md5.c (MD5Final): Clear the whole ctx. * modules/pam_namespace/pam_namespace.c (del_polydir): Guard for NULL poly. (protect_dir): Guard for -1 passing to close(). (ns_setup): Likewise. (pam_sm_open_session): Correctly test for SELinux enabled flag.
* Relevant BUGIDs:Tomas Mraz2010-11-11
| | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2010-11-11 Tomas Mraz <tm@t8m.info> * modules/pam_selinux/pam_selinux.c (pam_sm_open_session): Fix potential use after free in case SELinux is misconfigured. * modules/pam_namespace/pam_namespace.c (process_line): Fix memory leak when parsing empty config file lines.
* Relevant BUGIDs:Tomas Mraz2010-10-22
| | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2010-10-22 Tomas Mraz <tm@t8m.info> * modules/pam_namespace/pam_namespace.c (inst_init): Use execle() to execute the init script with clean environment. (CVE-2010-3853) (cleanup_tmpdirs): Likewise for executing rm.
* Relevant BUGIDs:Dmitry V. Levin2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2009-04-03 Dmitry V. Levin <ldv@altlinux.org> * libpamc/pamc_load.c (__pamc_exec_agent): Replace call to exit(3) in child process with call to _exit(2). * modules/pam_mkhomedir/pam_mkhomedir.c (create_homedir): Likewise. * modules/pam_unix/pam_unix_acct.c (_unix_run_verify_binary): Likewise. * modules/pam_unix/pam_unix_passwd.c (_unix_run_update_binary): Likewise. * modules/pam_unix/support.c (_unix_run_helper_binary): Likewise. * modules/pam_xauth/pam_xauth.c (run_coprocess): Likewise. * modules/pam_exec/pam_exec.c (call_exec): Replace all calls to exit(3) in child process with calls to _exit(2). * modules/pam_filter/pam_filter.c (set_filter): Likewise. * modules/pam_namespace/pam_namespace.c (inst_init, cleanup_tmpdirs): Likewise.
* Relevant BUGIDs:Tomas Mraz2009-02-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Purpose of commit: new feature Commit summary: --------------- 2009-02-27 Tomas Mraz <t8m@centrum.cz> * modules/pam_mkhomedir/pam_mkhomedir.c(create_homedir): Replace signal() with sigaction(). * modules/pam_namespace/pam_namespace.c(inst_init, cleanup_tmpdirs): Likewise. * modules/pam_unix/pam_unix_acct.c(_unix_run_verify_binary): Likewise. * modules/pam_unix/pam_unix_passwd.c(_unix_run_update_binary): Likewise. * modules/pam_unix/passverify.c(su_sighandler): Likewise. * modules/pam_unix/support.c(_unix_run_helper_binary): Likewise. * modules/pam_tally2/Makefile.am: Link the pam_tally2 app to libpam for auxiliary functions. * modules/pam_tally2/pam_tally2.8.xml: Drop non-existing no_reset option. Document new serialize option. * modules/pam_tally2/pam_tally2.c: Add support for the new serialize option. (_cleanup, tally_set_data, tally_get_data): Add tally file handle to tally PAM data. Needed for fcntl() locking. (get_tally): Use low level file access instead of stdio buffered FILE. If serialize option is used lock the tally file access. (set_tally, tally_bump, tally_reset): Use low level file access instead of stdio buffered FILE. Close the file handle only when it is not owned by PAM data. (pam_sm_authenticate, pam_sm_setcred, pam_sm_acct_mgmt): Pass the tally file handle to tally_set_data(). Get it from tally_get_data(). (main): Use low level file access instead of stdio buffered FILE.
* Relevant BUGIDs:Tomas Mraz2008-04-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Purpose of commit: new feature Commit summary: --------------- 2008-04-18 Tomas Mraz <t8m@centrum.cz> * modules/pam_namespace/pam_namespace.c: New functions unprotect_dirs(), cleanup_protect_data(), protect_mount(), protect_dir() to protect directory by bind mount. (cleanup_data): Renamed to cleanup_polydir_data(). (parse_create_params): Allow missing specification of mode or owner. (check_inst_parent): Call protect_dir() on the instance parent directory. The directory is created when it doesn't exist. (create_polydir): Protect and make the polydir by protect_dir(), remove potential races. (create_dirs): Renamed to create_instance(), remove call to inst_init(). (ns_setup): Call protect_dir() on the polydir if it already exists. Call inst_init() after the polydir is mounted. (setup_namespace): Set the namespace protect data to be cleaned up on pam_close_session()/pam_end(). (pam_sm_open_session): Initialize the protect_dirs. (pam_sm_close_session): Cleanup namespace protect data. * modules/pam_namespace/pam_namespace.h: Define struct for the stack of protected dirs. * modules/pam_namespace/pam_namespace.8.xml: Document when the instance init script is called. * modules/pam_namespace/namespace.conf.5.xml: Likewise.
* Relevant BUGIDs: rhbz#438338, rhbz#438264Tomas Mraz2008-03-20
| | | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2008-03-20 Tomas Mraz <t8m@centrum.cz> * modules/pam_namespace/pam_namespace.c(poly_name): Switch to USER method only when appropriate. (setup_namespace): Do not umount when not mounted with RUSER. * modules/pam_selinux/pam_selinux.c(pam_sm_close_session): Call freecontext() after the context is logged not before.
* Relevant BUGIDs:Tomas Mraz2008-02-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Purpose of commit: bugfix, new feature Commit summary: --------------- 2008-02-13 Tomas Mraz <t8m@centrum.cz> * modules/pam_namespace/Makefile.am: Add argv_parse files and namespace.d dir. * modules/pam_namespace/argv_parse.c: New file. * modules/pam_namespace/argv_parse.h: New file. * modules/pam_namespace/namespace.conf.5.xml: Document new features. * modules/pam_namespace/pam_namespace.8.xml: Likewise. * modules/pam_namespace/pam_namespace.h: Use SECURECONF_DIR define. Define NAMESPACE_D_DIR and NAMESPACE_D_GLOB. Define new option flags and polydir flags. (polydir_s): Add rdir, replace exclusive with flags, add init_script, owner, group, and mode. (instance_data): Add ruser, gid, and ruid. * modules/pam_namespace/pam_namespace.c: Remove now unused copy_ent(). (add_polydir_entry): Add the entry directly, no copy. (del_polydir): New function. (del_polydir_list): Call del_polydir(). (expand_variables, parse_create_params, parse_iscript_params, parse_method): New functions. (process_line): Call expand_variables() on polydir and instance prefix. Call argv_parse() instead of strtok_r(). Allocate struct polydir_s on heap. (parse_config_file): Parse .conf files from namespace.d dir after namespace.conf. (form_context): Call getcon() or get_default_context_with_level() when appropriate flags are set. (poly_name): Handle shared polydir flag. (inst_init): Execute non-default init script when specified. (create_polydir): New function. (create_dirs): Remove the code which checks the polydir. Do not call inst_init() when noinit flag is set. (ns_setup): Check the polydir and eventually create it if the create flag is set. (setup_namespace): Use ruser uid from idata. Set the namespace polydir pam data only when namespace was set up correctly. Unmount polydir based on ruser. (get_user_data): New function. (pam_sm_open_session): Check for use_current_context and use_default_context options. Call get_user_data(). (pam_sm_close_session): Call get_user_data().
* Relevant BUGIDs:Tomas Mraz2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Purpose of commit: new feature Commit summary: --------------- 2008-02-01 Tomas Mraz <t8m@centrum.cz> * modules/pam_namespace/namespace.conf.5.xml: Add documentation for tmpfs and tmpdir polyinst and for ~ user list modifier. * modules/pam_namespace/namespace.init: Add documentation for the new init parameter. Add home directory initialization script. * modules/pam_namespace/pam_namespace.8.xml: Document the new init parameter of the namespace.init script. * modules/pam_namespace/pam_namespace.c(copy_ent): Copy exclusive flag. (cleanup_data): New function. (process_line): Set exclusive flag. Add tmpfs and tmpdir methods. (ns_override): Change behavior on the exclusive flag. (poly_name): Process tmpfs and tmpdir methods. (inst_init): Add flag for new directory initialization. (create_dirs): Process the tmpdir method, add the new directory flag. (ns_setup): Remove unused code. Process the tmpfs method. (cleanup_tmpdirs): New function. (setup_namespace): Set data for proper cleanup. Cleanup the tmpdirs on failures. (pam_sm_close_session): Instead of parsing the config file again use the previously set data for cleanup. * modules/pam_namespace/pam_namespace.h: Add TMPFS and TMPDIR methods and exclusive flag.
* Relevant BUGIDs: rhbz #306901, rhbz #295151Tomas Mraz2007-09-27
| | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2007-09-27 Tomas Mraz <t8m@centrum.cz> * modules/pam_succeed_if/pam_succeed_if.c (evaluate_inlist): Fix in operator rhbz #295151. * modules/pam_namespace/pam_namespace.c (poly_name): Do not try to get context when SELinux is disabled rhbz #306901.
* Relevant BUGIDs:Tomas Mraz2007-06-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Purpose of commit: bugfix, new feature Commit summary: --------------- 2007-06-15 Tomas Mraz <t8m@centrum.cz> * modules/pam_namespace/README.xml: Avoid duplication of documentation. * modules/pam_namespace/namespace.conf: More real life example from MLS support. * modules/pam_namespace/namespace.conf.5.xml: Likewise plus properly describe how instance directory names are formed. * modules/pam_namespace/namespace.init: Preserve euid when called from setuid apps (su, newrole). * modules/pam_namespace/pam_namespace.8.xml: Added option no_unmount_on_close. * modules/pam_namespace/pam_namespace.c (process_line): Polyinst methods are now user, level and context. Fix crash on unknown override user in config file. (ns_override): Add explicit uid parameter. (form_context): Skip for user method. Implement level based polyinstantiation. (poly_name): Initialize contexts. Add level based polyinst, remove 'both' metod. Use raw contexts for instance names, truncate long instance names and add hash. (ns_setup): Hashing moved to poly_name(). (setup_namespace): Handle correctly override users for su (when unmnt_remnt is used). (pam_sm_close_session): Added no_unmount_on_close option. * modules/pam_namespace/pam_namespace.h: Added no_unmount_on_close_option, level method, limit on instance directory name length.
* Relevant BUGIDs:Thorsten Kukuk2006-10-24
| | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2006-10-24 Thorsten Kukuk <kukuk@thkukuk.de> * modules/pam_namespace/pam_namespace.c: Reserve space for trailing zero.
* Relevant BUGIDs:Thorsten Kukuk2006-08-30
| | | | | | | | | | | | Purpose of commit: cleanup Commit summary: --------------- 2006-08-30 Thorsten Kukuk <kukuk@thkukuk.de> * modules/pam_namespace/pam_namespace.c: Use pam_modutil_getpwnam() instead of getpwnam().
* Relevant BUGIDs:Thorsten Kukuk2006-07-28
| | | | | | | | | | | | | | | | | | | Purpose of commit: cleanup Commit summary: --------------- 2006-07-24 David Quigley <dpquigl@tycho.nsa.gov> * modules/pam_namespace/Makefile.am: Add pam_namespace.h. * modules/pam_namespace/pam_namespace.c: Move includes and data structure definitions from here ... * modules/pam_namespace/pam_namespace.h: ... here. New file. * modules/pam_namespace/pam_namespace.c: Move large sections of code into new functions. Acked by Janak Desai <janak@us.ibm.com>
* Relevant BUGIDs:Tomas Mraz2006-06-27
Purpose of commit: new feature Commit summary: --------------- * modules/pam_namespace/pam_namespace.c: New module originally written by Janak Desai. * modules/pam_namespace/Makefile.am: New. * modules/pam_namespace/README: New. * modules/pam_namespace/md5.c: New. * modules/pam_namespace/md5.h: New. * modules/pam_namespace/namespace.conf: New. * modules/pam_namespace/namespace.conf.5: New. * modules/pam_namespace/namespace.conf.5.xml: New. * modules/pam_namespace/namespace.init: New. * modules/pam_namespace/pam_namespace.8: New. * modules/pam_namespace/pam_namespace.8.xml: New. * modules/Makefile.am: Added pam_namespace. * configure.in: Added pam_namespace, test for unshare library call.
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