src/bin/pwait/pwait.c, branch stable/14

pwait: Add an option to print remaining processes

2025-10-30T10:38:18Z

* On startup, insert all valid PIDs into a tree. * In our main loop, whenever a process terminates, remove its PID from the tree. * On exit, if the -p flag was specified, print the remaining PIDs. MFC after: 3 days Reviewed by: bcr, markj Differential Revision: https://reviews.freebsd.org/D53293 (cherry picked from commit 3d73146baeb933fe955c7496572b483a9f92914c)

pwait: Avoid calling getpid(2) for each proc.

2025-10-30T10:38:18Z

(cherry picked from commit ab4abce6c2c2091a3b9ea1f38cbef94ee7a68090)

pwait: Fix timeout unit parser

2025-10-02T07:28:58Z

The timeout parser would check the first character after the number and ignore any subsequent ones. While here, switch to bool for booleans and fix some style nits. MFC after: 1 week Reviewed by: 0mp, markj Differential Revision: https://reviews.freebsd.org/D52612 (cherry picked from commit 3aac05f56620712744cb57d71a0ef42f8d8e3b52)

Remove $FreeBSD$: one-line .c pattern

2023-08-16T17:54:42Z

Remove /^[\s*]*__FBSDID$"\$FreeBSD\$"$;?\s*\n/

Fix typo in pwait.c introduced in 5bdce6ff546e

2021-01-21T21:43:27Z

Reported by: kevans

Remove deadlock in rc caused by pwait waiting for itself.

2021-01-21T21:36:37Z

The following situation can trigger the deadlock: 1) Long time ago a_service was started through rc.d 2) We want to restart a_service and issue service a_service restart 3) rc.subr reads current process PID (via file or process), sends TERM signal and runs pwait with PID harvested 4) a_service process dies very quickly so it's PID becomes available. It is possible that while original process was running, PID counter overflowed and pwait got assigned a_service's PID. This patch ignores pid(s) to wait that are equal to pwait PID. Reported by: Dan McGregor, Boris Lytochkin Submitted by: Boris Lytochkin Reviewed By: 0mp MFC after: 2 weeks PR: 218598 Differential Revision: https://reviews.freebsd.org/D28240

Remove unused include.

2020-02-02T20:51:28Z

MFC after: 2 weeks

Restore previous usage presentation (without "pwait: " prefix).

2020-02-01T09:13:11Z

Pointed out by: jilles

Style changes, mostly usage of braces around single line statements -

2020-01-26T11:13:34Z

it is safer and allowed for some time now by style(9). Sponsored by: Fudo Security

Implement -o flag which tells pwait(1) to exit if any of the given processes

2020-01-26T11:02:51Z

has terminated. Sponsored by: Fudo Security