#include "config.h"

#if defined(HAVE_LOCKF)

#include <unistd.h>
#include <errno.h>

/*  Emulate flock() with lockf() or fcntl().  This is just to increase
    portability of scripts.  The calls might not be completely
    interchangeable.  What's really needed is a good file
    locking module.
*/

# ifndef F_ULOCK
#  define F_ULOCK	0	/* Unlock a previously locked region */
# endif
# ifndef F_LOCK
#  define F_LOCK	1	/* Lock a region for exclusive use */
# endif
# ifndef F_TLOCK
#  define F_TLOCK	2	/* Test and lock a region for exclusive use */
# endif
# ifndef F_TEST
#  define F_TEST	3	/* Test a region for other processes locks */
# endif

/* These are the flock() constants.  Since this sytems doesn't have
   flock(), the values of the constants are probably not available.
*/
# ifndef LOCK_SH
#  define LOCK_SH 1
# endif
# ifndef LOCK_EX
#  define LOCK_EX 2
# endif
# ifndef LOCK_NB
#  define LOCK_NB 4
# endif
# ifndef LOCK_UN
#  define LOCK_UN 8
# endif

int
flock(fd, operation)
    int fd;
    int operation;
{
    int i;
    switch (operation) {

	/* LOCK_SH - get a shared lock */
      case LOCK_SH:
	/* LOCK_EX - get an exclusive lock */
      case LOCK_EX:
	i = lockf (fd, F_LOCK, 0);
	break;

	/* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
      case LOCK_SH|LOCK_NB:
	/* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
      case LOCK_EX|LOCK_NB:
	i = lockf (fd, F_TLOCK, 0);
	if (i == -1)
	    if ((errno == EAGAIN) || (errno == EACCES))
		errno = EWOULDBLOCK;
	break;

	/* LOCK_UN - unlock */
      case LOCK_UN:
	i = lockf (fd, F_ULOCK, 0);
	break;

	/* Default - can't decipher operation */
      default:
	i = -1;
	errno = EINVAL;
	break;
    }
    return i;
}
#else
int
flock(fd, operation)
    int fd;
    int operation;
{
    rb_notimplement();
    return -1;
}
#endif
v1_1dev</option>
<option value='v1_1r'>v1_1r</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>The Ruby Programming Language</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/ruby.git/'>summary</a><a href='/ruby.git/refs/?id=096d362939816b569b22ed3de87c06277ef4c3fb'>refs</a><a class='active' href='/ruby.git/log/tool/vcs.rb?showmsg=1'>log</a><a href='/ruby.git/tree/tool/vcs.rb?id=096d362939816b569b22ed3de87c06277ef4c3fb'>tree</a><a href='/ruby.git/commit/tool/vcs.rb?id=096d362939816b569b22ed3de87c06277ef4c3fb'>commit</a><a href='/ruby.git/diff/tool/vcs.rb?id=096d362939816b569b22ed3de87c06277ef4c3fb'>diff</a></td><td class='form'><form class='right' method='get' action='/ruby.git/log/tool/vcs.rb'>
<input type='hidden' name='id' value='096d362939816b569b22ed3de87c06277ef4c3fb'/><input type='hidden' name='showmsg' value='1'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/ruby.git/log/?id=096d362939816b569b22ed3de87c06277ef4c3fb&amp;ofs=50&amp;showmsg=1'>root</a>/<a href='/ruby.git/log/tool?id=096d362939816b569b22ed3de87c06277ef4c3fb&amp;ofs=50&amp;showmsg=1'>tool</a>/<a href='/ruby.git/log/tool/vcs.rb?id=096d362939816b569b22ed3de87c06277ef4c3fb&amp;ofs=50&amp;showmsg=1'>vcs.rb</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/ruby.git/log/tool/vcs.rb?id=096d362939816b569b22ed3de87c06277ef4c3fb&amp;ofs=50'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2015-02-18 03:43:01 +0000'>2015-02-18</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=7d9f497f7ebde95ba2e15247ab55021872a7009b'>vcs.rb: refactor</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS::GIT.get_revisions): refactor git -C option.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49637 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-27 05:20:21 +0000'>2015-01-27</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=8efd24bc280c048bae35d4ae43112ba6112caa6a'>vcs.rb: include svn property commits</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS::GIT.get_revisions): omit "." to include svn
  property only commits.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49418 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-23 02:11:02 +0000'>2015-01-23</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=1318ed3931df4113a2621b26492a3a4d8bbd83be'>vcs.rb: fix after_export</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS#after_export): fix nesting.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49384 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-20 23:57:38 +0000'>2015-01-20</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=df0dcd4815873462769e171224b1705be506f440'>make-snapshot: make revision.h by make</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/make-snapshot (package): keep VCS management files until
  prerequisites build, so that revision.h can be made by make.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49357 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-20 14:43:30 +0000'>2015-01-20</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=b448b79217a75b6198ae13c7ce715e68cfc522f5'>vcs.rb: fix for local svn</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS.local_path?): predicate that the argument is a
  local path.

* tool/vcs.rb (VCS::SVN.search_root): extract a method to search
  working root directory.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49355 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-20 14:00:00 +0000'>2015-01-20</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=6c68a3edfa7d26ea8ebcc19cb019bc85485d5705'>* tool/vcs.rb: fix the exception given remote-url of svn.</a></td><td>hsbt</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49354 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-18 06:50:24 +0000'>2015-01-18</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=00459aa89f82c6e7b139e7700c88d7650b01d411'>vcs.rb: search svn directory</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS::SVN#wcroot): search svn directory by
  traversing parent directories for old svn.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49320 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-18 05:25:04 +0000'>2015-01-18</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=d32a13a30e8fea47d6f508b9d06934f15cdbbe2e'>vcs.rb: debug</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS::SVN#wcroot): debug info.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49319 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-18 05:24:14 +0000'>2015-01-18</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=6b6178fc3d1485f472e721639cd9e994798959f1'>vcs.rb: workaround</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS::SVN#export): workaround for the case
  wcroot-abspath is not present.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49318 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-18 02:22:50 +0000'>2015-01-18</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=8287581afce60aa9b6f4a9ea123594c8a2cebb53'>vcs.rb: export without remote svn</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS::SVN#export): export without access to the
  remote server.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49314 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-17 13:56:28 +0000'>2015-01-17</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=ae27382632423a09095715842c6af2bcb6a3dc62'>vcs.rb: no empty names</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (get_revisions): branch names must not be empty.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49304 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-17 12:56:10 +0000'>2015-01-17</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=63491598c6870c3097833d2a4666f38098b6b238'>version.h: include branch name</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/file2lastrev.rb, tool/vcs.rb (get_revisions): define
  RUBY_BRANCH_NAME from the current branch name.

* version.h (RUBY_REVISION_STR): include the current branch name
  not "trunk" always.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49301 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2015-01-17 00:17:36 +0000'>2015-01-17</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=84c181a6e3d3be8199f5867880bb9630a67b5c34'>vcs.rb: fake string for branch names</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS::GIT#branch): make fake string for branch names
  to suppress expanding as a path.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49290 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-12-23 17:12:25 +0000'>2014-12-23</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=730c94172800dd3e4d6dbea42845b3c5500a8171'>make-snapshot: fix stable snapshot</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/make-snapshot (package): VCS#branch_list expects glob a
  pattern string but not a regexp.  based on the patch by Vit
  Ondruch.  in [ruby-core:67064].  [Bug #10636]
* tool/vcs.rb (VCS::SVN#branch_list): strip newlines.
* tool/vcs.rb (VCS::GIT.get_revisions): retrieve modified time
  from toplevel log too.
* tool/vcs.rb (VCS::GIT#branch_list): yield for each lines.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48946 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-12-16 00:08:14 +0000'>2014-12-16</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=9aeb74d0de8004440ddd50f1c20417d44b742ecd'>tool/vcs.rb: fix Ruby 1.8 compatibility harder</a></td><td>normal</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
Arguments after splat do not work under 1.8, either.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48856 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-12-15 20:44:54 +0000'>2014-12-15</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=5559e75ea557217b5298a2000315e472b03725c8'>tool/vcs.rb: fix Ruby 1.8 compatibility</a></td><td>normal</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
Symbol#to_proc is not standard in Ruby 1.8

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48853 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-12-15 06:02:58 +0000'>2014-12-15</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=4527b18a6b994da9578aefcf415b9fd8d32f76c8'>VCS::SVN#url was buggy and recent commits exposed it</a></td><td>naruse</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48843 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-12-15 01:02:52 +0000'>2014-12-15</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=fff1128281f49583d4b227cec7d32bfce735a1fb'>vcs.rb: abstract</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb: abstract VCS interfaces from make-snapshot.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48840 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-12-15 01:02:46 +0000'>2014-12-15</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=81ac745846986ae5fe22885342a6039e408e4e82'>vcs.rb: non-string path</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS#get_revisions, VCS::SVN.get_revisions): allow
  path to be other than a string.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48839 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-12-15 01:02:41 +0000'>2014-12-15</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=251869bc11b185c1b33b96f87271c3930a8aa71f'>vcs.rb: IO.pread</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (IO.pread): method to read command output without
  shell.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48837 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-12-13 23:55:33 +0000'>2014-12-13</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=db4e9d5eb331cfbb5c9d9a1abbb87955ae63a99b'>vcs.rb: srcdir parameter</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS#get_revisions): add srcdir optional parameter
  to SVN.get_revisions and GIT.get_revisions, instead of change
  working directory.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48834 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-11-25 06:26:26 +0000'>2014-11-25</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=f20f84d60a467c1bc8a0ca81fe2788fa4c8079f8'>vcs.rb: make Time with proper offset</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (get_revisions): use Time.new instead of Time.mktime
  which does not accept UTC offset, and offset manually for older
  versions than 1.9.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48559 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-08-22 06:36:46 +0000'>2014-08-22</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=f024d46f1155b0e9e6d767636f0ce8a9ca2efc65'>tool/vcs.rb: no time.rb</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* common.mk (Doxyfile): revert r43888, not to require preinstalled
  ruby.  [ruby-core:64488] [Bug #10161]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47248 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2014-02-28 01:23:31 +0000'>2014-02-28</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=68e6d3f1d564dcf7cafd06d55a311e7205f1d4e4'>tool/vcs.rb: discard error messages</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb (VCS#get_revisions): discard error messages for all
  VCS not only SVN.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45203 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2013-11-09 16:37:46 +0000'>2013-11-09</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=e72ca2e04457bfbfffb92bdfb30123852930e030'>rbinstall.rb: fix for non-working directory</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/rbinstall.rb (Gem::Specification.last_date): skip if failed to
  get info from VCS, for example, in the case circumstance sharing working
  directory with another machine and run vcs tools cannot work.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43624 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2013-11-09 13:35:39 +0000'>2013-11-09</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=1ce82d510c60134cc8e2c53b41d15e19beeeced0'>rbinstall.rb: spec date from VCS</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/rbinstall.rb (Gem::Specification.load): obtain spec date from
  VCS for the case using git, RUBY_RELEASE_DATE is the last resort.
  probably fixes [Bug #9085].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43617 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>
<tr class='logheader'><td><span title='2013-11-09 06:20:57 +0000'>2013-11-09</span></td><td class='logsubject'><a href='/ruby.git/commit/tool/vcs.rb?id=ae6f7929bdd0956019657e14c7e873e5ed5e4d4a'>vcs.rb: split</a></td><td>nobu</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* tool/vcs.rb: split from file2lastrev.rb.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43609 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


</td></tr>