is in second place (15%), Linux is in third place (5%), and ChromeOS is in fourth place (2... 3 File system 4.4 Security 4.5 User interface 5 Operating system development as a hobby 6...
remap_file_pages() system call ; The remap_file_pages() system call is used to create a nonlinear mapping, that is, a mapping in which the pages of the file are mapped into a nonsequential order in memory. The advantage of using remap_file_pages() over using repeated calls to mmap(2) is that the former approach does not require the kernel to create additional VMA (Virtual Memory Area) data structures. Supporting of nonlinear mapping requires significant amount of non-trivial code in kernel virtu...
Introduction ; In March 2001, the National Security Agency (NSA) gave a presentation about Security-Enhanced Linux (SELinux) at the 2.5 Linux Kernel Summit. SELinux is an implementation of flexible and fine-grained nondiscretionary access controls in the Linux kernel, originally implemented as its own particular kernel patch. Several other security projects (e.g. RSBAC, Medusa) have also developed flexible access control architectures for the Linux kernel, and various projects have developed par...
In computer security, the Linux Intrusion Detection System (LIDS) was a patch to the Linux... When LIDS was in effect all system network administration operations, chosen file access, any...
(*) == default ; iocharset=name · Character set to use for converting from Unicode to ASCII. The default is to do no conversion. Use iocharset=utf8 for UTF-8 translations. This requires CONFIG_NLS_UTF8 to be set in the kernel .config file. iocharset=none specifies the default behavior explicitly. resize=value · Resize the volume to <value> blocks. JFS only supports growing a volume, not shrinking it. This option is only valid during a remount, when the volume is mounted read-write. The resiz...
The other Linux file-system of this class is JFFS2. To make it more clear, here is a small comparison of MTD devices and block devices. 1 MTD devices represent flash devices and they...
0. Why you should avoid mandatory locking ; The write system call checks for a mandatory lock only once at its start. It is therefore possible for a lock request to be granted after this check but before the data is modified. A process may then see file data change even while a mandatory lock was held. Similarly, an exclusive lock may be granted on a file after the kernel has decided to proceed with a read, but before the read has actually completed, and the reading process may see the file data...
com/SELinuxProject/selinux Written in C Operating system Linux Type Security, Linux Security... In the case of file systems, mapping between files and the security contexts is called...
Version: 4.4.11-23.53.amzn1.x86_64 NFS서버의 특정 디렉토리를 클라이언트에서 마운트하여 자신의 영역인것 처럼 사용한다. 1. NFS 설치 및 계정 설정 접속을 허용 할 PC를 입력한다. *를 통해 모든 PC가 접속이 허용하도록 설정했다. /공유폴더 허용IP(rw,sync) or 허용IP(rw, sync, no_root_squash, all_squash) 서비스가 잘돌아가는지 확인한다. 3. PORT 설정 원격 제어를 위해 포트를 설정해줘야한다. NFS는 다...
File system Error Reporting ; Fanotify supports the FAN_FS_ERROR event type for file system-wide error reporting. It is meant to be used by file system health monitoring daemons, which listen for these events and take actions (notify sysadmin, start recovery) when a file system problem is detected. By design, a FAN_FS_ERROR notification exposes sufficient information for a monitoring tool to know a problem in the file system has happened. It doesn’t necessarily provide a user space application...