the descriptor is fine.
lseek64: same
-setuid: will always succeed given correct privileges, so there might
- be places which don't check for it.
-setreuid: same
-seteuid: same
-setgid: same
-setregid: same
-setegid: same
-setresuid: same
-setresgid: same
-
-
<stdio.h>:
setvbuf: if stream and buffer are fine and other parameters constant,