5 Commits

Author	SHA1	Message	Date
Philipp Maier	6a90c723fb	exec: osmo_system_nowait2: initalize *pw pointer with NULL ... The pointer *pw is only populated when the the parameter *user is given, otherwise it remains uninitalized while it is used later when the previleges are being dropped. Change-Id: Idec7041e9ea17a252aefbf6fa90091ae17fd4fcd Fixes: CID#209895	2020-05-12 11:03:51 +00:00
Harald Welte	f3cc731d40	exec: Introduce osmo_system_nowait2() to allow specify a user ... For a process running as root, it may be desirable to drop privileges down to a normal user before executing an external command. Let's add a new API function for that. Change-Id: If1431f930f72a8d6c1d102426874a11b7a2debd9	2020-04-18 15:06:59 +02:00
Vadim Yanitskiy	979c3b7e7e	exec: propogate errors from osmo_environment_[filter|append] ... Change-Id: If7d6e0441f73092a4fb455340c076ba4dc60af3f	2020-02-09 05:06:42 +07:00
Vadim Yanitskiy	d419f652bb	exec: prevent uninitialized memory access in osmo_system_nowait() ... If (!env_whitelist && addl_env), osmo_environment_append() would access uninitialized memory. If both are false, execle() would also deal with garbage values. Let's ensure that at least the first element of new_env[] is initialized. Change-Id: Id3901de4692ef44e9e9c67b1804e027fc4ce7c18 Fixes: CID#206571	2020-02-09 05:03:37 +07:00
Harald Welte	c6a8697800	Introduce helper functions for safe fork+exec of processes ... In some situations, we want to execute an external shell command in a non-blocking way. Similar to 'system', but without waiting for the child to complete. We also want to close all file descriptors ahead of the exec() and filter + modify the environment. Change-Id: Ib24ac8a083db32e55402ce496a5eabd8749cc888 Related: OS#4332	2019-12-17 13:49:28 +01:00