ELFCTL(1) General Commands Manual ELFCTL(1) NAME elfctl -- change an ELF binary's feature control note SYNOPSIS elfctl [-h | --help] [-i] [-l] [-e featurelist] file ... DESCRIPTION The elfctl utility modifies feature flags in the feature control note in an ELF binary. The options are as follows: -h | --help Print a usage message and exit. -i Ignore unknown feature flags in featurelist. -l List known ELF feature flags. -e featurelist Edit features from the given comma separated list featurelist. featurelist starts with one of the three operations: "+" to turn on the features, "-" to turn off the features, "=" to only turn on the given features. A comma separated list of feature names or numeric values follows the operation. If -e is not specified elfctl displays the status of each feature in the ELF note in each file .... EXIT STATUS Exit status is 0 on success, and 1 if the command fails if a file does not exist, is too short, or fails to find or edit features note. EXAMPLES The following is an example of a typical usage of the elfctl command: elfctl file elfctl -e +noaslr file Features may be specified as numerical values: elfctl -e =0x0001,0x0004 file Features may also be specified as a single combined value: elfctl -e =0x5 file SEE ALSO mitigations(7) HISTORY elfctl first appeared in FreeBSD 12.2. AUTHORS elfctl was written by Bora Ozarslan borako.ozarslan@gmail.com under spon- sorship from the FreeBSD Foundation. FreeBSD 14.2 October 5, 2023 ELFCTL(1)
NAME | SYNOPSIS | DESCRIPTION | EXIT STATUS | EXAMPLES | SEE ALSO | HISTORY | AUTHORS
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