GNU Hurd 0.7, GNU Mach 1.6, GNU MIG 1.6 released.
We're pleased to announce new releases!
GNU Hurd 0.7, NEWS:
Version 0.7 (2015-10-31) The node cache in ext2fs has been improved, generalized, and moved to libdiskfs. It is now also used by isofs and fatfs. The native fakeroot tool has been greatly improved. It now handles named sockets, and multiple corner cases related to permissions were identified and fixed. A new utility `rpcscan' has been introduced. It scans Mach servers and displays the RPCs handled by the associated demuxer. A long-standing synchronization issue involving the filesystem translators, libdiskfs, and libpager has been identified and fixed. The code has been updated to work with newer versions of the compiler and libc, and numerous bugs have been fixed throughout the code.
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The GNU Hurd is the GNU project's replacement for the Unix kernel. It is a collection of servers that run on the Mach microkernel to implement file systems, network protocols, file access control, and other features that are implemented by the Unix kernel or similar kernels (such as Linux). More detailed: documentation, what is the GNU Hurd.
GNU Mach 1.6, NEWS:
Version 1.6 (2015-10-31) The code has been updated to work with newer versions of the compiler, and numerous bugs have been fixed throughout the code. The lock debugging infrastructure has been revived and improved, and many locking issues have been fixed. The IPC tables and the hash table mapping objects to IPC entries have been replaced by radix trees. This addresses a scalability issue, as IPC tables required huge amounts of continuous virtual kernel memory. The kernel now allows non-privileged users to wire a small amount of memory. A bug hindering the eviction of inactive pages by the pageout daemon has been identified and fixed. The kernel now keeps timestamps relative to the system boot time. Among other things this fixes bogus uptime readings if the system time is altered. A reference leak in the exception handling mechanism has been identified and fixed. ANSI escape sequences are now handled when using `printf'. This fixes the formatting of messages printed by various Linux drivers.
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GNU Mach is the GNU distribution of the Mach microkernel, upon which a GNU Hurd system is based. The microkernel provides an Inter Process Communication (IPC) mechanism that the Hurd uses to define interfaces for implementing in a distributed multi-server fashion the services a traditional operating system kernel provides. More detailed: documentation.
GNU MIG 1.6, NEWS:
Version 1.6 (2015-10-31) MIG now emits RPC lookup functions that are declared `static inline' improving compatibility with newer dialects of C.
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GNU MIG is the GNU distribution of the Mach 3.0 Interface Generator (MIG). This tool translates Remote Procedure Call (RPC) definition files to C code, and is required to compile any packages that are receiving or invoking RPCs, such as GNU Mach, GNU Hurd, and the GNU C Library (glibc) when compiled for the Hurd. More detailed: documentation.
Snapshot tarballs may be downloaded from ftp://alpha.gnu.org/gnu/hurd/, http://alpha.gnu.org/gnu/hurd/, or checked out of Git, http://git.savannah.gnu.org/cgit/hurd/glibc.git and http://git.savannah.gnu.org/cgit/hurd/libpthread.git. SHA1 checksums:
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The GNU C Library (glibc) implements a system's standard library functions (as described by ISO C, and POSIX, for example). An important part of the Hurd actually resides in glibc: here, the system interfaces are implemented on top of the Hurd IPC protocols. This is different to the Linux port, where most simple system interfaces are in fact simply forwarded to/implemented as system calls.
Many thanks to all the people who are helping!
If you want to give the Hurd a try, you may easily do so with Debian GNU/Hurd.
The GNU Hurd system currently runs on 32-bit x86 machines. To compile the
Hurd, you need a toolchain configured to target
i?86-gnu; you cannot use a
toolchain targeting GNU/Linux.
Please read the FAQ. Bug reports should be sent to bug-hurd or filed on http://savannah.gnu.org/bugs/?group=hurd. Requests for assistance should be sent to help-hurd or filed on http://savannah.gnu.org/support/?group=hurd. You can also find us on the Freenode IRC network in the #hurd channel.