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start-stop-daemon: update comment, no code changes

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2023-11-07 15:59:11 +01:00
parent 73f28134fc
commit da8d1d84fd
1 changed files with 13 additions and 3 deletions
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16
debianutils/start_stop_daemon.c
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@ -17,6 +17,10 @@ One (only) of these must be given:
-S,--start Start
-K,--stop Stop
-T,--status Check for the existence of a process, return exitcode (since version 1.16.1)
0 - program is running
1 - program is not running and the pid file exists.
3 - program is not running.
4 - can't determine program status.
Search for matching processes.
If --stop is given, stop all matching processes (by sending a signal).
@ -45,9 +49,10 @@ Options which are valid for --start only:
-a,--startas NAME argv[0] (defaults to EXECUTABLE)
-b,--background Put process into background
-O,--output FILE Redirect stdout and stderr to FILE when forcing the
daemon into the background (since version 1.20.6). Only
relevant when using --background.
Probably O_CREAT|O_TRUNC? What if execv fails - where does error msg go? "Old" stderr? FILE? Nowhere?
daemon into the background (since version 1.20.6).
Requires --background and absolute pathname (tested with 1.21.22).
Uses O_CREAT|O_APPEND!
If execv fails, error message goes to FILE.
-N,--nicelevel N Add N to process' nice level
-c,--chuid USER[:[GRP]] Change to specified user [and group]
-m,--make-pidfile Write PID to the pidfile
@ -66,6 +71,11 @@ Options which are valid for --start only:
When not specified, start-stop-daemon will change directory to the
root directory before starting the process.
^^^^ Seems to be false, no default "/" chdir is done.
Tested -S with 1.21.22:
"start-stop-daemon -S -n pwd -a /bin/pwd" is the minimum needed to run pwd.
"start-stop-daemon -S -n pwd -x /bin/pwd" works too.
"start-stop-daemon -S -a /bin/pwd -x /bin/pwd" works too.
Earlier versions were less picky (which?)
Options which are valid for --stop only:
-s,--signal SIG Signal to send (default:TERM)