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path: root/src/include/rundefs.h
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* feature: use seccomp filters build at install time for --restrict-namespacesLibravatar netblue302023-07-12
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* random hostname by default; fix --hostname and --hosts-fileLibravatar netblue302023-02-27
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* Update copyright to 2023 (#5664)Libravatar David Fetter2023-02-15
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* private-etc rework: remove hiding blacklisted files in private-etc directory ↵Libravatar netblue302023-01-20
| | | | feature
* introduce new option restrict-namespacesLibravatar smitsohu2022-07-23
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* more on removing cgroups (#5200)Libravatar netblue302022-06-16
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* fixing CVE-2022-31214Libravatar smitsohu2022-06-08
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* 2022 copyright updateLibravatar netblue302022-01-07
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* simplify X11 socket whitelistingLibravatar smitsohu2021-06-03
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* add support for arbitrary whitelist directoriesLibravatar smitsohu2021-05-03
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* simplify initial /home and /run/user cleaningLibravatar smitsohu2021-03-14
| | | | mount without stash locations, only using the file descriptors
* copyright updateLibravatar startx20172021-02-15
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* DHCP fixesLibravatar netblue302020-10-06
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* join: move to mmapped sandbox status indicatorLibravatar smitsohu2020-08-31
| | | | | | | | | | 1) close #3612 2) remove an implicit limitation on rlimit-fsize option (could not set limit to smaller than 6 bytes without affecting the ability to join a sandbox) 3) rename 'join-or-start' file to just 'join' 4) when waiting for a sandbox that is not fully configured yet, increase polling frequency from 10 per second to 100 per second
* various x11 xorg enhancementsLibravatar smitsohu2020-08-17
| | | | | | | | | | | | 1) copy xauth binary into the sandbox and set mode to 0711, so it runs with cleared dumpable flag for unprivileged users 2) run xauth in an sbox sandbox 3) generate Xauthority file in runtime directory instead of /tmp; this way xauth is able to connect to the X11 socket even if the abstract socket doesn't exist, for example because a new network namespace was instantiated
* xdg-dbus-proxy socket finding and mount hardeningLibravatar Kristóf Marussy2020-04-06
| | | | | | | | | | | | | | | | | | | | | | To avoid race conditions, the proxy sockets from /run/firejail/dbus/ are bind-mounted to /run/firejail/mnt/dbus/, which is controlled by root. Instead of relying on the default locations of the DBus sockets, the environment variables DBUS_SESSION_BUS_ADDRESS and DBUS_SYSTEM_BUS_ADDRESS are set accordingly. User sockets are tried in the following order when starting the proxy: * DBUS_SESSION_BUS_ADDRES * /run/user/<pid>/bus * /run/user/<pid>/dbus/user_bus_socket These are all blocked (including DBUS_SESSION_BUS_ADDRESS if it points at a socket in the filesystem) when the filtering or blocking policy is active. System sockets are tried in the following order: * DBUS_SYSTEM_BUS_ADDRESS * /run/dbus/system_bus_socket These are all blocked (including DBUS_SYSTEM_BUS_ADDRESS if it points at a socket in the filesystem) when the filtering or blocking policy is active.
* Add xdg-dbus-proxy supportLibravatar Kristóf Marussy2020-04-06
| | | | | | | | | | | | | * The proxy is forked off outside the sandbox namespace to protect the fds of the original buses from the sandboxed process. * The /run/firejail/dbus directory (with the sticky bit set) holds the proxy sockets. The sockets are <parent pid>-user and <parent pid>-system for the user and system buses, respectively. Each socket is owned by the sandbox user. * The sockets are bind-mounted over their expected locations and the /run/firejail/dbus directory is subsequently hidden from the sandbox. * Upon sandbox exit, the xdg-dbus-proxy instance is terminated and the sockets are cleaned up. * Filter rules will be added in a future commit.
* seccomp: allow defining separate filters for 32-bit archLibravatar Topi Miettinen2020-03-28
| | | | | | | | | | | | | | | | | | | | | System calls (names and numbers) are not exactly the same for 32 bit and 64 bit architectures. Let's allow defining separate filters for 32-bit arch using seccomp.32, seccomp.32.drop, seccomp.32.keep. This is useful for mixed 64/32 bit application environments like Steam and Wine. Implement protocol and mdwx filtering also for 32 bit arch. It's still better to block secondary archs completely if not needed. Lists of supported system calls are also updated. Warn if preload libraries would be needed due to trace, tracelog or postexecseccomp (seccomp.drop=execve etc), because a 32-bit dynamic linker does not understand the 64 bit preload libraries. Closes #3267. Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
* openSUSE fix: mount private-etc on /usr/etc as wellLibravatar smitsohu2020-02-09
| | | | see issue #3145
* Fix indentation for dhcp client codeLibravatar Kristóf Marussy2020-01-27
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* move copyright to 2020 (part 2) (#3181)Libravatar glitsj162020-01-24
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* Run dhclient inside the sandboxLibravatar Kristóf Marussy2019-12-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * In order to ensure that network interfaces are already configured when the sandboxed launches, we run dhclient in forking mode (no -d switch), which makes the dhclient command exit when it successfully acquired a lease. The dhclient daemon process keeps running in the background. * We read the pid file for dhclient to find out the pid of the daemon process. Because dhclient only writes the pid file in the child process potentially after the forking parent process exits, there is some handling for possible race conditions. * All lease files and pid files are under /run/firejail/dhclient/ * The v4 and v6 dhclient has a separate lease as recommended. * The v4 client is set to generate a DUID, which is also used by the v6 client so that the server can associate the two leases if needed. * /etc/resolv.conf is created in the sandbox just like with the --dns option, by mirroring /etc. When DHCP is used, /etc/resolv.conf is normally empty so that dhclient can overwrite it the nameservers from the DHCP server. Current limitations: * The dhclient processes in the background are not terminated properly (by SIGTERM or dhclient -x), nor is the DHCP lease released (by dclient -r). The reason for this is that firejail drops all capabilities and privileges before the application in the sandbox is launched, which makes it impossible to launch dhclient to release the lease or kill the dhclient processes still running with the effective user id of root. Instead the dhclient daemons die with the sandbox. According to the dhclient man page, releasing the lease is not required by the DHCP specification, so this is not a problem, however some ISPs may require releasing leases. A possible workaround would be to fork another process upon sandbox initialization that invokes dhclient -r when the sandbox is ready to exit. This would require communication with the main firejail process through a pipe, while keeping and required privileges. As this would add some complexity but the benefits have limited applicability (compatibility with esoteric DHCP server configurations), I chose not to implement this. * When only an IPv6 address is requested, the interface may possible not have a link-local address when we run dhclient. This causes dhclient -6 fail, since DHCPv6 uses link-local addressing instead of layer 2 addressing, see e.g., https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=783387 In a future commit, waiting for a link-local address will be added.
* Allow libtrace preload library to use for trace output a logfile specified ↵Libravatar Glenn Washburn2019-08-29
| | | | by the environment variable FIREJAIL_TRACEFILE or as the RUN_TRACE_FILE if it exists ortherwise use the console as before.
* reduce redundancy in pathsLibravatar Reiner Herrmann2019-06-21
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* rundefs.h: housekeepingLibravatar smitsohu2019-05-28
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* fix previous commit, more seccomp testingLibravatar netblue302019-04-09
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