core/pkgs/build-support/deterministic-uname/deterministic-uname.sh
2024-05-13 11:34:52 -04:00

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#! @shell@
set -o errexit
set -o nounset
show_help() {
@coreutils@/bin/cat << EOF
Usage: uname [OPTION]...
Print certain system information. With no OPTION, same as -s.
-a, --all print all information, in the following order,
except omit -p and -i if unknown:
-s, --kernel-name print the kernel name
-n, --nodename print the network node hostname
-r, --kernel-release print the kernel release
-v, --kernel-version print the kernel version
-m, --machine print the machine hardware name
-p, --processor print the processor type (non-portable)
-i, --hardware-platform print the hardware platform (non-portable)
-o, --operating-system print the operating system
--help display this help and exit
--version output version information and exit
EOF
exit 0
}
# Potential command-line options.
version=0
all=0
kernel_name=0
nodename=0
kernel_release=0
kernel_version=0
machine=0
processor=0
hardware_platform=0
operating_system=0
# With no OPTION, same as -s.
if [[ $# -eq 0 ]]; then
kernel_name=1
fi
@getopt@/bin/getopt --test > /dev/null && rc=$? || rc=$?
if [[ $rc -ne 4 ]]; then
# This shouldn't happen.
echo "Warning: Enhanced getopt not supported, please open an issue in nixpkgs." >&2
else
# Define all short and long options.
SHORT=hvsnrvmpioa
LONG=help,version,kernel-name,nodename,kernel-release,kernel-version,machine,processor,hardware-platform,operating-system,all
# Parse all options.
PARSED=`@getopt@/bin/getopt --options $SHORT --longoptions $LONG --name "$0" -- "$@"`
eval set -- "$PARSED"
fi
# Process each argument, and set the appropriate flag if we recognize it.
while [[ $# -ge 1 ]]; do
case "$1" in
--version)
version=1
;;
-s|--kernel-name)
kernel_name=1
;;
-n|--nodename)
nodename=1
;;
-r|--kernel-release)
kernel_release=1
;;
-v|--kernel-version)
kernel_version=1
;;
-m|--machine)
machine=1
;;
-p|--processor)
processor=1
;;
-i|--hardware-platform)
hardware_platform=1
;;
-o|--operating-system)
operating_system=1
;;
-a|--all)
all=1
;;
--help)
show_help
;;
--)
shift
break
;;
*)
echo "uname: unrecognized option '$1'"
echo "Type 'uname --help' for a list of available options."
exit 1
;;
esac
shift
done
KERNEL_NAME_VAL=@uSystem@
NODENAME_VAL=nixpkgs
KERNEL_RELEASE_VAL=@modDirVersion@
# #1-NixOS SMP PREEMPT_DYNAMIC Wed Dec 14 10:41:06 UTC 2022
KERNEL_VERSION_VAL="#1-NixOS Tue Jan 1 00:00:00 UTC 1980"
MACHINE_VAL=@processor@
PROCESSOR_VAL=unknown
HARDWARE_PLATFORM_VAL=unknown
OPERATING_SYSTEM_VAL=@operatingSystem@
if [[ "$version" = "1" ]]; then
# in case some script greps for GNU coreutils.
echo "uname (GNU coreutils) 9.1"
echo "Nixpkgs deterministic-uname"
exit
fi
# output of the real uname from GNU coreutils
# Darwin:
# Darwin *nodename* 22.1.0 Darwin Kernel Version 22.1.0: Sun Oct 9 20:14:30 PDT 2022; root:xnu-8792.41.9~2/RELEASE_ARM64_T8103 arm64 arm Darwin
# NixOS:
# Linux *nodename* 6.0.13 #1-NixOS SMP PREEMPT_DYNAMIC Wed Dec 14 10:41:06 UTC 2022 x86_64 GNU/Linux
output=()
if [[ "$all" = "1" ]]; then
output+=("$KERNEL_NAME_VAL" "$NODENAME_VAL" "$KERNEL_RELEASE_VAL" "$KERNEL_VERSION_VAL" "$MACHINE_VAL")
# in help: except omit -p and -i if unknown.
# output+=($PROCESSOR_VAL $HARDWARE_PLATFORM_VAL)
output+=("$OPERATING_SYSTEM_VAL")
fi
if [[ "$kernel_name" = "1" ]]; then
output+=("$KERNEL_NAME_VAL")
fi
if [[ "$nodename" = "1" ]]; then
output+=("$NODENAME_VAL")
fi
if [[ "$kernel_release" = "1" ]]; then
output+=("$KERNEL_RELEASE_VAL")
fi
if [[ "$kernel_version" = "1" ]]; then
output+=("$KERNEL_VERSION_VAL")
fi
if [[ "$machine" = "1" ]]; then
output+=("$MACHINE_VAL")
fi
if [[ "$processor" = "1" ]]; then
output+=("$PROCESSOR_VAL")
fi
if [[ "$hardware_platform" = "1" ]]; then
output+=("$HARDWARE_PLATFORM_VAL")
fi
if [[ "$operating_system" = "1" ]]; then
output+=("$OPERATING_SYSTEM_VAL")
fi
echo "${output[@]}"