cat doesn't handle EPERM #8068
Description
It boils down to this very easy reproducer: cat /proc/$$/syscall
GNU coreutils output:
skia@noble:/$ cat /proc/$$/syscall
cat: /proc/208/syscall: Operation not permitted
skia@noble:/$ echo $?
1
uutils coreutils output:
skia@questing:/$ cat /proc/$$/syscall
skia@questing:/$ echo $?
0
strace cat /proc/$$/syscall clearly shows that read() return EPERM with both binaries:
...
read(3, 0x7ffd4ef80798, 65536) = -1 EPERM (Operation not permitted)
...