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unix: add new setfsuid/setfsgid wrappers

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Added SetfsgidRetGid and SetfsuidRetUid wrappers for corresponding
syscalls, both returning previous gid or uid set.

Fixes golang/go#36649

Change-Id: I95176f4442258ca68db79cf967fbf0bbf0a57acf
Reviewed-on: https://go-review.googlesource.com/c/sys/+/215579
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Sergey Ivanov
2020-01-22 13:43:26 +00:00
committed by Ian Lance Taylor
parent 34d275377b
commit e047566fdf
24 changed files with 122 additions and 72 deletions
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unix/zsyscall_linux_amd64.go
+6 -4
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@@ -2137,8 +2137,9 @@ func sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setfsgid(gid int) (err error) {
_, _, e1 := Syscall(SYS_SETFSGID, uintptr(gid), 0, 0)
func setfsgid(gid int) (prev int, err error) {
r0, _, e1 := Syscall(SYS_SETFSGID, uintptr(gid), 0, 0)
prev = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
@@ -2147,8 +2148,9 @@ func Setfsgid(gid int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setfsuid(uid int) (err error) {
_, _, e1 := Syscall(SYS_SETFSUID, uintptr(uid), 0, 0)
func setfsuid(uid int) (prev int, err error) {
r0, _, e1 := Syscall(SYS_SETFSUID, uintptr(uid), 0, 0)
prev = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}