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| author | Jamie Liu <jamieliu@google.com> | 2019-03-29 13:15:49 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2019-03-29 13:16:46 -0700 |
| commit | 69afd0438e3213b8bf6d74bdf9c288772f81e834 (patch) | |
| tree | cd0a67d09b6486efc9ba219a37b95e2ce97043a6 /pkg/sentry/fs | |
| parent | ed23f547093e705ba3d6f82b2ce49592180f9a5a (diff) | |
Return srclen in proc.idMapFileOperations.Write.
PiperOrigin-RevId: 241037926
Change-Id: I4b0381ac1c7575e8b861291b068d3da22bc03850
Diffstat (limited to 'pkg/sentry/fs')
| -rw-r--r-- | pkg/sentry/fs/proc/uid_gid_map.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/pkg/sentry/fs/proc/uid_gid_map.go b/pkg/sentry/fs/proc/uid_gid_map.go index a52e0cb1f..0c68bbfc9 100644 --- a/pkg/sentry/fs/proc/uid_gid_map.go +++ b/pkg/sentry/fs/proc/uid_gid_map.go @@ -169,5 +169,8 @@ func (imfo *idMapFileOperations) Write(ctx context.Context, file *fs.File, src u if err != nil { return 0, err } - return int64(len(b)), nil + + // On success, Linux's kernel/user_namespace.c:map_write() always returns + // count, even if fewer bytes were used. + return int64(srclen), nil } |