[Minios-devel] [UNIKRAFT PATCH v3 0/5] Fix multiline printfs with newlib

[Yuri Volchkov <yuri.volchkov@xxxxxxxxx>]

Problem: if compiled with newlib, printf("foo\nbar\nbaz\n") would
print only "foo". That is because current implementation of stdio was
returning the number of bytes written. But vfs expects a error code
instead.

This series also fixes few other minor problems in vfs, ramfs and
stdio, related to the original issue.

Changes since v1:
  - rebase to current origin/staging

Changes since v2:
  - check flag UK_VFSCORE_NOPOS for read operation too
  - rename __coutk_wrapper to __read_fn
  - A bit more comments

Yuri Volchkov (5):
  lib/vfscore: introduce vfscore_uioforeach
  lib/vfscore: handle uio properly in stdio functions
  lib/vfscore: check return value of vfs_write in sys_write
  lib/vfscore: do not advance position for stdio
  lib/vfscore: make all vnops function return int

 lib/ramfs/ramfs_vnops.c             |  6 +--
 lib/vfscore/fops.c                  |  6 ++-
 lib/vfscore/include/vfscore/file.h  |  6 +++
 lib/vfscore/include/vfscore/uio.h   | 45 +++++++++++++++++++
 lib/vfscore/include/vfscore/vnode.h | 10 +++--
 lib/vfscore/stdio.c                 | 67 ++++++++++++++++++++++-------
 lib/vfscore/subr_uio.c              | 34 ++++-----------
 lib/vfscore/syscalls.c              |  2 +-
 8 files changed, 125 insertions(+), 51 deletions(-)

-- 
2.19.2


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