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Preallocate some slices

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Fix *some* of the prealloc linter warnings. While it does not make sense
to address all warnings (or add prealloc to the list of linters we run
in CI), some do make sense.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
This commit is contained in:
Kir Kolyshkin
2026-02-11 12:18:58 -08:00
parent e89f01eda9
commit 5a6e1e18f9
2 changed files with 3 additions and 2 deletions
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libcontainer/internal/userns/usernsfd_linux.go
+2 -1
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@@ -41,10 +41,11 @@ func (m Mapping) toSys() (uids, gids []syscall.SysProcIDMap) {
// the uid and gid mappings (because the order doesn't matter to the kernel).
// The set of userns handles is indexed using this ID.
func (m Mapping) id() string {
var uids, gids []string
uids := make([]string, 0, len(m.UIDMappings))
for _, idmap := range m.UIDMappings {
uids = append(uids, fmt.Sprintf("%d:%d:%d", idmap.ContainerID, idmap.HostID, idmap.Size))
}
gids := make([]string, 0, len(m.GIDMappings))
for _, idmap := range m.GIDMappings {
gids = append(gids, fmt.Sprintf("%d:%d:%d", idmap.ContainerID, idmap.HostID, idmap.Size))
}