diff options
Diffstat (limited to 'internal/syscallcompat/sys_linux.go')
| -rw-r--r-- | internal/syscallcompat/sys_linux.go | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/internal/syscallcompat/sys_linux.go b/internal/syscallcompat/sys_linux.go index 595aa1d..a431195 100644 --- a/internal/syscallcompat/sys_linux.go +++ b/internal/syscallcompat/sys_linux.go @@ -180,6 +180,28 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) { return syscall.Mkdirat(dirfd, path, mode) } +// MkdiratUser runs the Mkdirat syscall in the context of a different user. +func MkdiratUser(dirfd int, path string, mode uint32, context *fuse.Context) (err error) { + if context != nil { + runtime.LockOSThread() + defer runtime.UnlockOSThread() + + err = syscall.Setregid(-1, int(context.Owner.Gid)) + if err != nil { + return err + } + defer syscall.Setregid(-1, 0) + + err = syscall.Setreuid(-1, int(context.Owner.Uid)) + if err != nil { + return err + } + defer syscall.Setreuid(-1, 0) + } + + return Mkdirat(dirfd, path, mode) +} + // Fstatat syscall. func Fstatat(dirfd int, path string, stat *unix.Stat_t, flags int) (err error) { // Why would we ever want to call this without AT_SYMLINK_NOFOLLOW? |