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products/Sources/formale Sprachen/C/Linux/drivers/firmware/tegra/   (Linux Kernel Version 6.17.9©)  Datei vom 24.10.2025 mit Größe 19 kB image not shown  

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mkinitrd.sh


products/Sources/formale Sprachen/C/Linux/tools/testing/selftests/rcutorture/bin/mkinitrd.sh

#!/bin/bash # SPDX-License-Identifier: GPL-2.0+ # # Create an initrd directory if one does not already exist. # # Copyright (C) IBM Corporation, 2013 # # Author: Connor Shu D=tools/testing/selftests/rcutorture # Prerequisite checks if [ ! -d "$D" ]; then echo >&2 "$D does not exist: Malformed kernel source tree?" exit 1 fi if [ -s "$D/initrd/init" ]; then echo "$D/initrd/init already exists, no need to create it" exit 0 fi # Create a C-language initrd/init infinite-loop program and statically # link it. This results in a very small initrd. echo "Creating a statically linked C-language initrd" cd $D mkdir -p initrd cd initrd cat > init.c << '___EOF___' #ifndef NOLIBC #include #include #endif volatile unsigned long delaycount; int main(int argc, char *argv[]) { int i; struct timeval tv; struct timeval tvb; printf("Torture-test rudimentary init program started, command line:\n"); for (i = 0; i < argc; i++) printf(" %s", argv[i]); printf("\n"); for (;;) { sleep(1); /* Need some userspace time. */ if (gettimeofday(&tvb, NULL)) continue; do { for (i = 0; i < 1000 * 100; i++) delaycount = i * i; if (gettimeofday(&tv, NULL)) break; tv.tv_sec -= tvb.tv_sec; if (tv.tv_sec > 1) break; tv.tv_usec += tv.tv_sec * 1000 * 1000; tv.tv_usec -= tvb.tv_usec; } while (tv.tv_usec < 1000); } return 0; } ___EOF___ # build using nolibc on supported archs (smaller executable) and fall # back to regular glibc on other ones. if echo -e "#if __x86_64__||__i386__||__i486__||__i586__||__i686__" \ "||__ARM_EABI__||__aarch64__||(__mips__ && _ABIO32)" \ "||__powerpc__||(__riscv && __riscv_xlen == 64)" \ "||__s390x__||__loongarch__" \ "\nyes\n#endif" \ | ${CROSS_COMPILE}gcc -E -nostdlib -xc - \ | grep -q '^yes'; then # architecture supported by nolibc ${CROSS_COMPILE}gcc -fno-asynchronous-unwind-tables -fno-ident \ -nostdlib -include ../../../../include/nolibc/nolibc.h \ -s -static -Os -o init init.c -lgcc ret=$? else ${CROSS_COMPILE}gcc -s -static -Os -o init init.c ret=$? fi if [ "$ret" -ne 0 ] then echo "Failed to create a statically linked C-language initrd" exit "$ret" fi rm init.c echo "Done creating a statically linked C-language initrd" exit 0

                                                                                                                                                                                                                                                                                                                                                                                                     

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