glibc/elf/dl-tunables.list

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# Copyright (C) 2016-2017 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.
# Allowed attributes for tunables:
#
# type: Defaults to STRING
# minval: Optional minimum acceptable value
# maxval: Optional maximum acceptable value
# env_alias: An alias environment variable
# is_secure: Specify whether the environment variable should be read for
# setuid binaries.
glibc {
malloc {
check {
type: INT_32
minval: 0
maxval: 3
env_alias: MALLOC_CHECK_
is_secure: true
}
top_pad {
type: SIZE_T
env_alias: MALLOC_TOP_PAD_
}
perturb {
type: INT_32
minval: 0
maxval: 0xff
env_alias: MALLOC_PERTURB_
}
mmap_threshold {
type: SIZE_T
env_alias: MALLOC_MMAP_THRESHOLD_
}
trim_threshold {
type: SIZE_T
env_alias: MALLOC_TRIM_THRESHOLD_
}
mmap_max {
type: INT_32
env_alias: MALLOC_MMAP_MAX_
}
arena_max {
type: SIZE_T
env_alias: MALLOC_ARENA_MAX
minval: 1
}
arena_test {
type: SIZE_T
env_alias: MALLOC_ARENA_TEST
minval: 1
}
}
}