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ps: Add --ppid
option to filter by parent PID
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parent
d3c5ae0860
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4e7e878606
Notes:
sideshowbarker
2024-07-17 02:05:41 +09:00
Author: https://github.com/tcl3 Commit: https://github.com/SerenityOS/serenity/commit/4e7e878606 Pull-request: https://github.com/SerenityOS/serenity/pull/19933 Reviewed-by: https://github.com/AtkinsSJ ✅
@ -5,7 +5,7 @@ ps - list currently running processes
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## Synopsis
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```**sh
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$ ps [--version] [-a] [-A] [-e] [-f] [-p pid-list] [-q pid-list] [-t tty-list] [-u user-list]
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$ ps [--version] [-a] [-A] [-e] [-f] [-p pid-list] [--ppid pid-list] [-q pid-list] [-t tty-list] [-u user-list]
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```
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## Description
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@ -19,6 +19,7 @@ For each process, print its PID (process ID), to which TTY it belongs, and invok
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* `-A` or `-e`: Consider all processes, not just those in the current TTY.
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* `-f`: Also print for each process: UID (as resolved username), PPID (parent PID), and STATE (Runnable, Sleeping, Selecting, Reading, etc.)
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* `-p pid-list`: Select processes matching any of the given PIDs. `pid-list` is a list of PIDs, separated by commas or spaces.
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* `--ppid pid-list`: Select processes whose PPID matches any of the given PIDs. `pid-list` is a list of PIDs, separated by commas or spaces.
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* `-q pid-list`: Only consider the given PIDs, if they exist. Output the processes in the order provided by `pid-list`. `pid-list` is a list of PIDs, separated by commas or spaces.
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* `-t tty-list`: Select processes associated with any of the given terminals. `tty-list` is a list of short TTY names (e.g: `pts:0`) or the full TTY device paths, separated by commas or spaces.
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* `-u user-list`: Select processes matching any of the given UIDs. `user-list` is a list of UIDs or login names, separated by commas or spaces.
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@ -121,6 +121,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
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bool provided_filtering_option = false;
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bool provided_quick_pid_list = false;
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Vector<pid_t> pid_list;
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Vector<pid_t> parent_pid_list;
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Vector<DeprecatedString> tty_list;
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Vector<uid_t> uid_list;
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@ -136,6 +137,13 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
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warnln("Could not parse '{}' as a PID.", pid_string);
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return pid;
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}));
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args_parser.add_option(make_list_option(parent_pid_list, "Show processes with a matching PPID. (Comma- or space-separated list.)", "ppid", {}, "pid-list", [&](StringView pid_string) {
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provided_filtering_option = true;
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auto pid = pid_string.to_int();
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if (!pid.has_value())
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warnln("Could not parse '{}' as a PID.", pid_string);
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return pid;
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}));
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args_parser.add_option(make_list_option(pid_list, "Show processes with a matching PID. (Comma- or space-separated list.) Processes will be listed in the order given.", nullptr, 'q', "pid-list", [&](StringView pid_string) {
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provided_quick_pid_list = true;
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auto pid = pid_string.to_int();
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@ -217,6 +225,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
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// Default is to show processes from the current TTY
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if ((!provided_filtering_option && process.tty == this_pseudo_tty_name.bytes_as_string_view())
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|| (!pid_list.is_empty() && pid_list.contains_slow(process.pid))
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|| (!parent_pid_list.is_empty() && parent_pid_list.contains_slow(process.ppid))
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|| (!uid_list.is_empty() && uid_list.contains_slow(process.uid))
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|| (!tty_list.is_empty() && tty_list.contains_slow(process.tty))
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|| (every_terminal_process_flag && !process.tty.is_empty())) {
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