1. 11 Sep, 2018 1 commit
  2. 21 Jul, 2018 1 commit
  3. 28 Jun, 2018 1 commit
  4. 02 Nov, 2017 1 commit
    • Greg Kroah-Hartman's avatar
      License cleanup: add SPDX GPL-2.0 license identifier to files with no license · b2441318
      Greg Kroah-Hartman authored
      Many source files in the tree are missing licensing information, which
      makes it harder for compliance tools to determine the correct license.
      
      By default all files without license information are under the default
      license of the kernel, which is GPL version 2.
      
      Update the files which contain no license information with the 'GPL-2.0'
      SPDX license identifier.  The SPDX identifier is a legally binding
      shorthand, which can be used instead of the full boiler plate text.
      
      This patch is based on work done by Thomas Gleixner and Kate Stewart and
      Philippe Ombredanne.
      
      How this work was done:
      
      Patches were generated and checked against linux-4.14-rc6 for a subset of
      the use cases:
       - file had no licensing information it it.
       - file was a */uapi/* one with no licensing information in it,
       - file was a */uapi/* one with existing licensing information,
      
      Further patches will be generated in subsequent months to fix up cases
      where non-standard license headers were used, and references to license
      had to be inferred by heuristics based on keywords.
      
      The analysis to determine which SPDX License Identifier to be applied to
      a file was done in a spreadsheet of side by side results from of the
      output of two independent scanners (ScanCode & Windriver) producing SPDX
      tag:value files created by Philippe Ombredanne.  Philippe prepared the
      base worksheet, and did an initial spot review of a few 1000 files.
      
      The 4.13 kernel was the starting point of the analysis with 60,537 files
      assessed.  Kate Stewart did a file by file comparison of the scanner
      results in the spreadsheet to determine which SPDX license identifier(s)
      to be applied to the file. She confirmed any determination that was not
      immediately clear with lawyers working with the Linux Foundation.
      
      Criteria used to select files for SPDX license identifier tagging was:
       - Files considered eligible had to be source code files.
       - Make and config files were included as candidates if they contained >5
         lines of source
       - File already had some variant of a license header in it (even if <5
         lines).
      
      All documentation files were explicitly excluded.
      
      The following heuristics were used to determine which SPDX license
      identifiers to apply.
      
       - when both scanners couldn't find any license traces, file was
         considered to have no license information in it, and the top level
         COPYING file license applied.
      
         For non */uapi/* files that summary was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0                                              11139
      
         and resulted in the first patch in this series.
      
         If that file was a */uapi/* path one, it was "GPL-2.0 WITH
         Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0 WITH Linux-syscall-note                        930
      
         and resulted in the second patch in this series.
      
       - if a file had some form of licensing information in it, and was one
         of the */uapi/* ones, it was denoted with the Linux-syscall-note if
         any GPL family license was found in the file or had no licensing in
         it (per prior point).  Results summary:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|------
         GPL-2.0 WITH Linux-syscall-note                       270
         GPL-2.0+ WITH Linux-syscall-note                      169
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
         LGPL-2.1+ WITH Linux-syscall-note                      15
         GPL-1.0+ WITH Linux-syscall-note                       14
         ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
         LGPL-2.0+ WITH Linux-syscall-note                       4
         LGPL-2.1 WITH Linux-syscall-note                        3
         ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
         ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1
      
         and that resulted in the third patch in this series.
      
       - when the two scanners agreed on the detected license(s), that became
         the concluded license(s).
      
       - when there was disagreement between the two scanners (one detected a
         license but the other didn't, or they both detected different
         licenses) a manual inspection of the file occurred.
      
       - In most cases a manual inspection of the information in the file
         resulted in a clear resolution of the license that should apply (and
         which scanner probably needed to revisit its heuristics).
      
       - When it was not immediately clear, the license identifier was
         confirmed with lawyers working with the Linux Foundation.
      
       - If there was any question as to the appropriate license identifier,
         the file was flagged for further research and to be revisited later
         in time.
      
      In total, over 70 hours of logged manual review was done on the
      spreadsheet to determine the SPDX license identifiers to apply to the
      source files by Kate, Philippe, Thomas and, in some cases, confirmation
      by lawyers working with the Linux Foundation.
      
      Kate also obtained a third independent scan of the 4.13 code base from
      FOSSology, and compared selected files where the other two scanners
      disagreed against that SPDX file, to see if there was new insights.  The
      Windriver scanner is based on an older version of FOSSology in part, so
      they are related.
      
      Thomas did random spot checks in about 500 files from the spreadsheets
      for the uapi headers and agreed with SPDX license identifier in the
      files he inspected. For the non-uapi files Thomas did random spot checks
      in about 15000 files.
      
      In initial set of patches against 4.14-rc6, 3 files were found to have
      copy/paste license identifier errors, and have been fixed to reflect the
      correct identifier.
      
      Additionally Philippe spent 10 hours this week doing a detailed manual
      inspection and review of the 12,461 patched files from the initial patch
      version early this week with:
       - a full scancode scan run, collecting the matched texts, detected
         license ids and scores
       - reviewing anything where there was a license detected (about 500+
         files) to ensure that the applied SPDX license was correct
       - reviewing anything where there was no detection but the patch license
         was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
         SPDX license was correct
      
      This produced a worksheet with 20 files needing minor correction.  This
      worksheet was then exported into 3 different .csv files for the
      different types of files to be modified.
      
      These .csv files were then reviewed by Greg.  Thomas wrote a script to
      parse the csv files and add the proper SPDX tag to the file, in the
      format that the file expected.  This script was further refined by Greg
      based on the output to detect more types of files automatically and to
      distinguish between header and source .c files (which need different
      comment types.)  Finally Greg ran the script using the .csv files to
      generate the patches.
      Reviewed-by: default avatarKate Stewart <kstewart@linuxfoundation.org>
      Reviewed-by: default avatarPhilippe Ombredanne <pombredanne@nexb.com>
      Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      b2441318
  5. 25 Jun, 2016 3 commits
  6. 10 May, 2015 1 commit
  7. 28 May, 2014 1 commit
    • Takashi Iwai's avatar
      console: Use explicit pointer type for vc_uni_pagedir* fields · e4bdab70
      Takashi Iwai authored
      The vc_data.vc_uni_pagedir filed is currently long int, supposedly to
      be served generically.  This, however, leads to lots of cast to
      pointer, and rather it worsens the readability significantly.
      
      Actually, we have now only a single uni_pagedir map implementation,
      and this won't change likely.  So, it'd be much more simple and
      error-prone to just use the exact pointer for struct uni_pagedir
      instead of long.
      
      Ditto for vc_uni_pagedir_loc.  It's a pointer to the uni_pagedir, thus
      it can be changed similarly to the exact type.
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      e4bdab70
  8. 10 Aug, 2010 3 commits
  9. 16 Jul, 2009 1 commit
  10. 14 Oct, 2008 1 commit
  11. 29 Apr, 2008 1 commit
    • Jan Engelhardt's avatar
      vt: fix background color on line feed · c9e587ab
      Jan Engelhardt authored
      A command that causes a line feed while a background color is active,
      such as
      
      	perl -e 'print "x" x 60, "\e[44m", "x" x 40, "\e[0m\n"'
      and
      	perl -e 'print "x" x 40, "\e[44m\n", "x" x 40, "\e[0m\n"'
      
      causes the line that was started as a result of the line feed to be completely
      filled with the currently active background color instead of the default
      color.
      
      When scrolling, part of the current screen is memcpy'd/memmove'd to the new
      region, and the new line(s) that will appear as a result are cleared using
      memset.  However, the lines are cleared with vc->vc_video_erase_char, causing
      them to be colored with the currently active background color.  This is
      different from X11 terminal emulators which always paint the new lines with
      the default background color (e.g.  `xterm -bg black`).
      
      The clear operation (\e[1J and \e[2J) also use vc_video_erase_char, so a new
      vc->vc_scrl_erase_char is introduced with contains the erase character used
      for scrolling, which is built from vc->vc_def_color instead of vc->vc_color.
      Signed-off-by: default avatarJan Engelhardt <jengelh@computergmbh.de>
      Cc: "Antonino A. Daplas" <adaplas@pol.net>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      c9e587ab
  12. 16 Oct, 2007 1 commit
    • Antonino A. Daplas's avatar
      vt/vgacon: Check if screen resize request comes from userspace · e400b6ec
      Antonino A. Daplas authored
      Various console drivers are able to resize the screen via the con_resize()
      hook.  This hook is also visible in userspace via the TIOCWINSZ, VT_RESIZE and
      VT_RESIZEX ioctl's.  One particular utility, SVGATextMode, expects that
      con_resize() of the VGA console will always return success even if the
      resulting screen is not compatible with the hardware.  However, this
      particular behavior of the VGA console, as reported in Kernel Bugzilla Bug
      7513, can cause undefined behavior if the user starts with a console size
      larger than 80x25.
      
      To work around this problem, add an extra parameter to con_resize().  This
      parameter is ignored by drivers except for vgacon.  If this parameter is
      non-zero, then the resize request came from a VT_RESIZE or VT_RESIZEX ioctl
      and vgacon will always return success.  If this parameter is zero, vgacon will
      return -EINVAL if the requested size is not compatible with the hardware.  The
      latter is the more correct behavior.
      
      With this change, SVGATextMode should still work correctly while in-kernel and
      stty resize calls can expect correct behavior from vgacon.
      Signed-off-by: default avatarAntonino Daplas <adaplas@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e400b6ec
  13. 09 Jun, 2007 1 commit
  14. 08 May, 2007 1 commit
  15. 11 Feb, 2007 1 commit
    • Eric W. Biederman's avatar
      [PATCH] vt: refactor console SAK processing · 8b6312f4
      Eric W. Biederman authored
      This does several things.
      - It moves looking up of the current foreground console into process
        context where we can safely take the semaphore that protects this
        operation.
      - It uses the new flavor of work queue processing.
      - This generates a factor of do_SAK, __do_SAK that runs immediately.
      - This calls __do_SAK with the console semaphore held ensuring nothing
        else happens to the console while we process the SAK operation.
      - With the console SAK processing moved into process context this
        patch removes the xchg operations that I used to attempt to attomically
        update struct pid, because of the strange locking used in the SAK processing.
        With SAK using the normal console semaphore nothing special is needed.
      
      Cc: Oleg Nesterov <oleg@tv-sign.ru>
      Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8b6312f4
  16. 02 Oct, 2006 1 commit
    • Eric W. Biederman's avatar
      [PATCH] vt: Make vt_pid a struct pid (making it pid wrap around safe). · bde0d2c9
      Eric W. Biederman authored
      I took a good hard look at the locking and it appears the locking on vt_pid
      is the console semaphore.  Every modified path is called under the console
      semaphore except reset_vc when it is called from fn_SAK or do_SAK both of
      which appear to be in interrupt context.  In addition I need to be careful
      because in the presence of an oops the console_sem may be arbitrarily
      dropped.
      
      Which leads me to conclude the current locking is inadequate for my needs.
      
      Given the weird cases we could hit because of oops printing instead of
      introducing an extra spin lock to protect the data and keep the pid to
      signal and the signal to send in sync, I have opted to use xchg on just the
      struct pid * pointer instead.
      
      Due to console_sem we will stay in sync between vt_pid and vt_mode except
      for a small window during a SAK, or oops handling.  SAK handling should
      kill any user space process that care, and oops handling we are broken
      anyway.  Besides the worst that can happen is that I try to send the wrong
      signal.
      Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
      Cc: Oleg Nesterov <oleg@tv-sign.ru>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      bde0d2c9
  17. 10 Jul, 2006 1 commit
  18. 07 Nov, 2005 1 commit
  19. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4