| // Copyright 2016 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| //go:build (dragonfly || freebsd || hurd || (!android && linux) || netbsd || openbsd || (solaris && !illumos)) && cgo && !osusergo |
| |
| package user |
| |
| import ( |
| "fmt" |
| "syscall" |
| ) |
| |
| //extern-sysinfo getgrouplist |
| func getGroupList(name *byte, userGID syscall.Gid_t, gids *syscall.Gid_t, n *int32) int32 |
| |
| // groupRetry retries getGroupList with much larger size for n. The result is |
| // stored in gids. |
| func groupRetry(username string, name []byte, userGID syscall.Gid_t, gids *[]syscall.Gid_t, n *int32) error { |
| // More than initial buffer, but now n contains the correct size. |
| if *n > maxGroups { |
| return fmt.Errorf("user: %q is a member of more than %d groups", username, maxGroups) |
| } |
| *gids = make([]syscall.Gid_t, *n) |
| rv := getGroupList(&name[0], userGID, &(*gids)[0], n) |
| if rv == -1 { |
| return fmt.Errorf("user: list groups for %s failed", username) |
| } |
| return nil |
| } |