mirror of
https://github.com/qdm12/gluetun.git
synced 2026-05-06 20:10:11 +02:00
Quentin McGaw
4a78989d9d
- main reason being it's a burden to always define sentinel errors at global scope, wrap them with `%w` instead of using a string directly - only use sentinel errors when it has to be checked using `errors.Is` - replace all usage of these sentinel errors in `fmt.Errorf` with direct strings that were in the sentinel error - exclude the sentinel error definition requirement from .golangci.yml - update unit tests to use ContainersError instead of ErrorIs so it stays as a "not a change detector test" without requiring a sentinel error
52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
package alpine
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import (
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"fmt"
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"io/fs"
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"os"
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"os/user"
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"strconv"
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)
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// CreateUser creates a user in Alpine with the given UID.
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func (a *Alpine) CreateUser(username string, uid int) (createdUsername string, err error) {
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UIDStr := strconv.Itoa(uid)
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u, err := a.lookupID(UIDStr)
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_, unknownUID := err.(user.UnknownUserIdError)
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if err != nil && !unknownUID {
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return "", err
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}
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if u != nil {
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if u.Username == username {
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return "", nil
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}
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return u.Username, nil
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}
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u, err = a.lookup(username)
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_, unknownUsername := err.(user.UnknownUserError)
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if err != nil && !unknownUsername {
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return "", err
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}
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if u != nil {
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return "", fmt.Errorf("user already exists: with name %s for ID %s instead of %d",
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username, u.Uid, uid)
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}
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const permission = fs.FileMode(0o644)
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file, err := os.OpenFile(a.passwdPath, os.O_APPEND|os.O_WRONLY, permission)
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if err != nil {
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return "", err
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}
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s := fmt.Sprintf("%s:x:%d:::/dev/null:/sbin/nologin\n", username, uid)
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_, err = file.WriteString(s)
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if err != nil {
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_ = file.Close()
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return "", err
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}
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return username, file.Close()
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}
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