procps/testsuite/sysctl.test/sysctl_write.exp

set sysctl ${topdir}sysctl

set test "sysctl write from command line"
spawn $sysctl --dry-run kernel.hostname=procps-test
expect_pass "$test" "/proc/sys/kernel/hostname = procps-test"

set test "sysctl write from configuration file"
spawn $sysctl --dry-run -f ${topdir}testsuite/sysctl_glob_test.conf
expect_pass "$test" "/proc/sys/fs/protected_fifos = 2\\s+/proc/sys/fs/protected_symlinks = 2\\s+/proc/sys/fs/protected_hardlinks = 1"

set hostname_file "/proc/sys/kernel/hostname"
if {[file exists ${hostname_file}]} {
  if {[file writable ${hostname_file}]} {
    unsupported "sysctl write: hostname file is writable"
  } else {
    set test "sysctl write unwritable file"
    spawn $sysctl -q kernel.hostname=procpstest
    expect_pass "$test" "sysctl: permission denied on key \"kernel.hostname\"\\s*$"
    expect_spawn_retval "$test" 1

    set test "sysctl write unwritable file ignored"
    spawn $sysctl -q -- -kernel.hostname=procpstest
    expect_pass "$test" "sysctl: permission denied on key \"kernel.hostname\", ignoring\\s*$"
    expect_spawn_retval "$test" 0
  }
} else {
  unsupported "sysctl write: hostname file doe not exist"
}

set test "sysctl write above /proc"
spawn $sysctl /../../../etc=1
expect_pass "$test" "sysctl: Path is not under /proc/sys/: /proc/sys//../../../etc"