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