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This patch solves the false-negative error message "failed to open file" referring to an ioctl info file during an ioctl call. The message is now avoided by checking for the existence of the file before reading it. However, the observed symptom uncovered an actual bug that was introduced in commit "libc vfs: open OSS 'info' file only once" with the attempt to cache the content of ioctl info files. When called multiple time for different paths, 'Vfs_plugin::_with_info' would wrongly return the info from the first call as cached in a local static variable. The patch fixes the problem by a new added 'Cached_ioctl_info' implementation in the scope of the 'Vfs_plugin'. Issue #4372 Fixes #4852
This directory contains ports of 3rd-party libraries to Genode. Usage ----- The tool './tool/ports/prepare_port' in the toplevel directory automates the task of downloading and preparing the 3rd-party source codes. One can select individual ports that have to be prepared by specifying their base names (without the version number) as command-line argument. For example, the following command prepares both the C library and the Freetype library: ! ./tool/ports/prepare_port libc freetype To compile and link against 3rd-party libraries of the 'libports' repository, you have to include the repository into the build process by appending it to the 'REPOSITORIES' declaration of your '<build-dir>/etc/build.conf' file. Under the hood -------------- For each library, there is a file contained in the 'libports/ports/' subdirectory. The file is named after the library and contains the library-specific rules for downloading the source code and installing header files. How does 'libports' relate to the other repositories? ----------------------------------------------------- Most libraries hosted in the 'libports' repository expect a complete C library, which is provided via the 'libc' port. The libc, in turn, depends on the 'os' repository for its back end.