View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001260 | 1003.1(2016/18)/Issue7+TC2 | Shell and Utilities | public | 2019-06-14 21:12 | 2024-06-11 09:08 |
| Reporter | stephane | Assigned To | |||
| Priority | normal | Severity | Comment | Type | Clarification Requested |
| Status | Closed | Resolution | Accepted | ||
| Name | Stephane Chazelas | ||||
| Organization | |||||
| User Reference | |||||
| Section | kill utility | ||||
| Page Number | 2879, 2882 (in 2018 edition) | ||||
| Line Number | 94926-94929 95071 95092 | ||||
| Interp Status | Approved | ||||
| Final Accepted Text | See 0001260:0004490 | ||||
| Summary | 0001260: "kill pid" XSI only | ||||
| Description | The synopsis of the kill utility suggests that "kill pid" is only required to be supported by systems implementing XSI as the non-XSI synopsis: kill -s signal_name pid... doesn't have -s signal_name in square brackets, suggesting it's mandatory. Is that intentional? I'd expect "kill 123", "kill -- -123", "kill %1" to consistently send SIGTERM to the 123 pid or pgid, or %1 job, portably even on non-XSI. Line 95071 has: kill −TERM −123 It seems to me it should be either: kill -TERM -- -123 and be XSI shaded, or: kill -s TERM -- -123 The rationale section has: > To avoid an ambiguity of an initial negative number argument specifying either a signal number or a process group, POSIX.1-2017 mandates that it is always considered the former by implementations that support the XSI option. It also requires that conforming applications always use the "− −" options terminator argument when specifying a process group, unless an option is also specified. (emphasis mine) I don't see anything in the normative text that says that a -- is not required when an option is specified. AFAICT, in kill -s TERM -123 or kill -TERM -123, that -123 would still be treated as an option (and in practice is by several implementation). | ||||
| Desired Action | Unless I'm missing something something, change first synopsis line to: kill [−s signal_name] pid... change kill -TERM -123 to kill -s TERM -- -123 Remove the "unless an option is also specified." part in the rationale. | ||||
| Tags | tc3-2008 | ||||
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Interpretation response ------------------------ The standard is unclear on this issue, and no conformance distinction can be made between alternative implementations based on this. This is being referred to the sponsor. Rationale: ------------- The standard is not clear as to whether or not -s is required on non-XSI systems. No known implementations require it. Notes to the Editor (not part of this interpretation): ------------------------------------------------------- Make the changes suggested in the Desired Action. |
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Interpretation proposed: 7 October 2019 |
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Interpretation Approved: 11 Nov 2019 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2019-06-14 21:12 | stephane | New Issue | |
| 2019-06-14 21:12 | stephane | Name | => Stephane Chazelas |
| 2019-06-14 21:12 | stephane | Section | => kill utility |
| 2019-06-14 21:12 | stephane | Page Number | => 2879, 2882 (in 2018 edition) |
| 2019-06-14 21:12 | stephane | Line Number | => 94926-94929 95071 95092 |
| 2019-07-25 15:26 | Don Cragun | Note Added: 0004490 | |
| 2019-07-25 15:27 | Don Cragun | Interp Status | => --- |
| 2019-07-25 15:27 | Don Cragun | Status | New => Interpretation Required |
| 2019-07-25 15:27 | Don Cragun | Resolution | Open => Accepted |
| 2019-07-25 15:27 | Don Cragun | Tag Attached: tc3-2008 | |
| 2019-07-25 15:31 | Don Cragun | Final Accepted Text | => See 0001260:0004490 |
| 2019-07-25 16:25 | Don Cragun | Interp Status | --- => Pending |
| 2019-10-07 15:16 | agadmin | Interp Status | Pending => Proposed |
| 2019-10-07 15:16 | agadmin | Note Added: 0004602 | |
| 2019-11-11 12:20 | agadmin | Interp Status | Proposed => Approved |
| 2019-11-11 12:20 | agadmin | Note Added: 0004647 | |
| 2019-12-04 11:57 | geoffclare | Status | Interpretation Required => Applied |
| 2024-06-11 09:08 | agadmin | Status | Applied => Closed |
