sys_read 20 arch/arm64/include/asm/unistd32.h __SYSCALL(__NR_read, sys_read) sys_read 463 include/linux/syscalls.h asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); sys_read 206 include/uapi/asm-generic/unistd.h __SYSCALL(__NR_read, sys_read) sys_read 2076 tools/include/nolibc/nolibc.h ssize_t ret = sys_read(fd, buf, count); sys_read 206 tools/include/uapi/asm-generic/unistd.h __SYSCALL(__NR_read, sys_read) sys_read 50 tools/testing/selftests/proc/proc-self-syscall.c rv = sys_read(fd, buf2, sizeof(buf2));