view tests/test-bookmarks.t @ 12938:bf826c0b9537 stable

opener: check hardlink count reporting (issue1866)

The Linux CIFS kernel driver (even in 2.6.36) suffers from a hardlink
count blindness bug (lstat() returning 1 in st_nlink when it is expected
to return >1), which causes repository corruption if Mercurial running
on Linux pushes or commits to a hardlinked repository stored on a Windows
share, if that share is mounted using the CIFS driver.

This patch works around issue1866 and improves the workaround done in
50523b4407f6 to fix issue761, by teaching the opener to lazily execute a
runtime check (new function checknlink) to see if the hardlink count
reported by nlinks() can be trusted.

Since nlinks() is also known to return varying count values (1 or >1)
depending on whether the file is open or not and depending on what client
and server software combination is being used for accessing and serving
the Windows share, we deliberately open the file before calling nlinks() in
order to have a stable precondition. Trying to depend on the precondition
"file closed" would be fragile, as the file could have been opened very
easily somewhere else in the program.

  $ echo "[extensions]" >> $HGRCPATH
  $ echo "bookmarks=" >> $HGRCPATH

  $ hg init

no bookmarks

  $ hg bookmarks
  no bookmarks set

bookmark rev -1

  $ hg bookmark X

list bookmarks

  $ hg bookmarks
   * X                         -1:000000000000

list bookmarks with color

  $ hg --config extensions.color= --config color.mode=ansi \
  >    bookmarks --color=always
   * X                         -1:000000000000

  $ echo a > a
  $ hg add a
  $ hg commit -m 0

bookmark X moved to rev 0

  $ hg bookmarks
   * X                         0:f7b1eb17ad24

look up bookmark

  $ hg log -r X
  changeset:   0:f7b1eb17ad24
  tag:         X
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     0
  

second bookmark for rev 0

  $ hg bookmark X2

bookmark rev -1 again

  $ hg bookmark -r null Y

list bookmarks

  $ hg bookmarks
   * X2                        0:f7b1eb17ad24
   * X                         0:f7b1eb17ad24
     Y                         -1:000000000000

  $ echo b > b
  $ hg add b
  $ hg commit -m 1

bookmarks revset

  $ hg log -r 'bookmark()'
  changeset:   1:925d80f479bb
  tag:         X
  tag:         X2
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     1
  
  $ hg log -r 'bookmark(Y)'
  $ hg log -r 'bookmark(X2)'
  changeset:   1:925d80f479bb
  tag:         X
  tag:         X2
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     1
  
  $ hg help revsets | grep 'bookmark('
      "bookmark([name])"

bookmarks X and X2 moved to rev 1, Y at rev -1

  $ hg bookmarks
   * X2                        1:925d80f479bb
   * X                         1:925d80f479bb
     Y                         -1:000000000000

bookmark rev 0 again

  $ hg bookmark -r 0 Z

  $ echo c > c
  $ hg add c
  $ hg commit -m 2

bookmarks X and X2 moved to rev 2, Y at rev -1, Z at rev 0

  $ hg bookmarks
   * X2                        2:0316ce92851d
   * X                         2:0316ce92851d
     Z                         0:f7b1eb17ad24
     Y                         -1:000000000000

rename nonexistent bookmark

  $ hg bookmark -m A B
  abort: a bookmark of this name does not exist
  [255]

rename to existent bookmark

  $ hg bookmark -m X Y
  abort: a bookmark of the same name already exists
  [255]

force rename to existent bookmark

  $ hg bookmark -f -m X Y

list bookmarks

  $ hg bookmark
   * X2                        2:0316ce92851d
   * Y                         2:0316ce92851d
     Z                         0:f7b1eb17ad24

rename without new name

  $ hg bookmark -m Y
  abort: new bookmark name required
  [255]

delete without name

  $ hg bookmark -d
  abort: bookmark name required
  [255]

delete nonexistent bookmark

  $ hg bookmark -d A
  abort: a bookmark of this name does not exist
  [255]

bookmark name with spaces should be stripped

  $ hg bookmark ' x  y '

list bookmarks

  $ hg bookmarks
   * X2                        2:0316ce92851d
   * Y                         2:0316ce92851d
     Z                         0:f7b1eb17ad24
   * x  y                      2:0316ce92851d

look up stripped bookmark name

  $ hg log -r '"x  y"'
  changeset:   2:0316ce92851d
  tag:         X2
  tag:         Y
  tag:         tip
  tag:         x  y
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     2
  

reject bookmark name with newline

  $ hg bookmark '
  > '
  abort: bookmark name cannot contain newlines
  [255]

bookmark with existing name

  $ hg bookmark Z
  abort: a bookmark of the same name already exists
  [255]

force bookmark with existing name

  $ hg bookmark -f Z

list bookmarks

  $ hg bookmark
   * X2                        2:0316ce92851d
   * Y                         2:0316ce92851d
   * Z                         2:0316ce92851d
   * x  y                      2:0316ce92851d

revision but no bookmark name

  $ hg bookmark -r .
  abort: bookmark name required
  [255]

bookmark name with whitespace only

  $ hg bookmark ' '
  abort: bookmark names cannot consist entirely of whitespace
  [255]