Russ Cox 798191bca9 unix, plan9: avoid writing to p when Pipe(p) fails ...

Generally speaking Go functions make no guarantees
about what has happened to result parameters on error,
and Pipe is no exception: callers should avoid looking at
p if Pipe returns an error.

However, we had a bug in which ForkExec was using the
content of p after a failed Pipe, and others may too.
As a robustness fix, make Pipe avoid writing to p on failure.

windows.Pipe already avoided writing to p on failure.

For golang/go#50057.

Change-Id: I93ed06b06a9981793c119c1d7df689fbe79b4116
Reviewed-on: https://go-review.googlesource.com/c/sys/+/370614
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>

2021-12-09 17:19:07 +00:00

..

asm_plan9_386.s

go.sys/plan9: just jump to syscall.Syscall etc.

2014-08-14 12:05:46 -07:00

asm_plan9_amd64.s

go.sys/plan9: just jump to syscall.Syscall etc.

2014-08-14 12:05:46 -07:00

asm_plan9_arm.s

plan9: add arm support

2018-01-25 14:42:35 +00:00

asm.s

all: single space after period

2017-10-25 20:39:07 +00:00

const_plan9.go

plan9: add mount and bind flags

2016-02-22 20:26:01 +00:00

dir_plan9.go

go.sys: update package names

2014-08-11 15:58:26 -07:00

env_plan9.go

plan9: move Unsetenv into env_plan9.go

2018-01-08 22:11:54 +00:00

errors_plan9.go

all: single space after period

2017-10-25 20:39:07 +00:00

mkall.sh

plan9: modify mkall.sh to support zsyscall*.go files generation

2019-05-29 16:45:35 +00:00

mkerrors.sh

plan9: follow convention for generated code comment

2018-06-14 13:48:39 +00:00

mksyscall.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

mksysnum_plan9.sh

plan9: fix duplicated copyright header in mksysnum_plan9.sh

2015-12-11 03:36:51 +00:00

pwd_go15_plan9.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

pwd_plan9.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

race0.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

race.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

str.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

syscall_plan9.go

unix, plan9: avoid writing to p when Pipe(p) fails

2021-12-09 17:19:07 +00:00

syscall_test.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

syscall.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

zsyscall_plan9_386.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

zsyscall_plan9_amd64.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

zsyscall_plan9_arm.go

all: add missing //go:build comments

2021-11-10 15:43:04 +00:00

zsysnum_plan9.go

plan9: reduce the set of architecture-dependent files on Plan 9

2015-04-11 10:39:11 +00:00