[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH 00/15] mini-os: remove struct file dependency from config
Today the layout of struct file is depending on the Mini-OS configuration. This is especially bad as the layout is exported to external users like the Xen libraries built for Mini-OS, and those are being built only once for multiple stubdom configurations. Today there is no direct problem resulting from this, as the main difference between struct file layouts is a large union containing all the device specific data for the different file types. The largest union member is not configuration dependant, so the build is currently not broken. In order to avoid any future problems this patch series is eliminating the configuration dependency by replacing most of the device specific union members by a single pointer. The two union members used by Xen libraries can't be replaced yet, as those need to be switched to use the generic pointer first. In order to hide the Mini-OS internal implementation of the files array, the last patch is introducing a service function for obtaining the pointer to struct file for a given file descriptor, which must be used for that purpose by all Mini-OS external components. Juergen Gross (15): mini-os: split struct file definition from its usage mini-os: makes file.read bool and move it ahead of device specific part mini-os: make offset a common struct file member for all types mini-os: replace multiple fd elements in struct file by common one mini-os: introduce a common dev pointer in struct file mini-os: eliminate blkfront union member in struct file mini-os: eliminate consfront union member in struct file mini-os: eliminate fbfront union member in struct file mini-os: eliminate kbdfront union member in struct file mini-os: eliminate netfront union member in struct file mini-os: move tpm respgot member of struct file to device specific data mini-os: eliminate tpmfront union member in struct file mini-os: eliminate tpmtis union member in struct file mini-os: eliminate xenbus union member in struct file mini-os: introduce get_file_from_fd() blkfront.c | 15 +++--- console/xencons_ring.c | 2 +- fbfront.c | 16 +++---- include/lib.h | 59 ++++------------------- include/tpmfront.h | 2 + lib/sys.c | 103 ++++++++++++++++++++++------------------- lib/xs.c | 13 +++--- netfront.c | 6 +-- tpm_tis.c | 23 ++++----- tpmfront.c | 33 +++++++------ 10 files changed, 119 insertions(+), 153 deletions(-) -- 2.26.2
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