http://www.gnu.org/software/libc/

Sources

For concenience, we maintain our own source repository.

Specifics

Ports

Porting glibc to a specific architecture is non-trivial.

The main port is x86, which is somewhat complete and is maintained. There were incomplete ports for Alpha, MIPS, and PowerPC, but they were unmaintained and have been removed.

Hurd-specific Port

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.

Maintenance

Implementation Details

• Hurd-specific API

• secure file descriptor handling

• signal thread

• startup

Concepts

• environment variable

• file descriptor

• process

• signal

• ioctl

Individual functions

Some of these are well-known as UNIX system calls.

• fallocate

• fork

• mmap

• poll

Debugging

Some hints for debugging.

Open Issues

There is a FOSS Factory bounty (p269) on some glibc tasks.