talos-petitboot/lib/process, branch master

lib/process: Add option to pipe to process stdin

2019-03-05T20:54:10+00:00

If pipe_stdin exists, create a second pipe to write to the child process's STDIN. This allows Petitboot to pipe information to a process, for example piping a LUKS password to cryptsetup. Signed-off-by: Samuel Mendoza-Jonas

lib/process: Add process_get_stdout

2018-08-07T01:30:36+00:00

Add a new structure 'struct process_stdout' and optional parameter 'stdout' to the process_run_simple functions to allow the caller to get a buffer filled with the stdout from the child process. Rename the process_run_simple functions to process_get_stdout and add wrappers for the old process_run_simple function names. Signed-off-by: Geoff Levand Signed-off-by: Samuel Mendoza-Jonas

lib/process: Cleanup stdout callback

2018-08-07T01:30:36+00:00

General cleanup of async stdout processing. The process_stdout_cb and process_stdout_custom routines were doing the same thing, so rename process_stdout_custom to process_process_stdout and make process_stdout_cb a wrapper that calls process_process_stdout. Signed-off-by: Geoff Levand Signed-off-by: Samuel Mendoza-Jonas

lib/log: Switch to pb_log_fn

2018-08-07T01:30:36+00:00

The only functional change should be an additional '/n' to a few log messagees that seemed to be missing it. Signed-off-by: Geoff Levand Signed-off-by: Samuel Mendoza-Jonas

lib/process: Add raw stdout mode

2017-08-15T03:03:28+00:00

Allow process users to set 'raw_stdout', which if set skips redirecting and saving output from processes. Signed-off-by: Samuel Mendoza-Jonas

process: Cancel all asynchronous jobs on reinit

2017-01-31T02:18:38+00:00

If an asynchronous job is running over a reinit, the process can return and run its callback function after the reinit. This becomes a problem if the callback function accesses pointers that were only valid before the reinit (eg. device structs). If a reinit is requested explicitly stop all active asynchronous jobs and clear their callback functions before the reinit. Signed-off-by: Samuel Mendoza-Jonas

lib/process: Allow process output to be retrieved on each event

2016-12-20T05:40:21+00:00

Allow a custom callback function to be set when registering the IO waiter for asynchronous processes. To allow output from processes to be parsed as it is received, add process_stdout_custom() which passes a new "line" parameter to process_read_stdout_once() in order to consume output as it appears. Users of a custom IO callback will only have access to the process_info struct which is internal to lib/process; the function procinfo_get_process() is added to allow these callers to access process information. Signed-off-by: Samuel Mendoza-Jonas

lib/process: Add debug on process kill

2014-04-03T06:25:48+00:00

Signed-off-by: Jeremy Kerr

lib/process: Don't abort stdout reads on EINTR

2014-02-20T02:11:52+00:00

If our read() of the process stdout pipe fails with EINTR (eg, if we receive a SIGCHLD because the process exited), then process_read_stdout_once will return a non-zero exit code, and we'll abort any further stdout collection. Instead, we should check for EINTR, and allow the reads to continue. This change normalises the return value from process_read_stdout_once to return positive on success, negative on failure, and zero on competion. We use a positive return value for the non-error EINTR case. Also, add a pb_log if the read fails for non-EINTR reasons. Signed-off-by: Jeremy Kerr

lib/process: Add helper for check process clean exit

2014-01-21T05:36:01+00:00

We have a few incorrect checks for the exit status of a process; this change adds a helper with the correct WIFEXITED && WEXITSTATUS==0 logic. Signed-off-by: Jeremy Kerr