diff options
author | Shawn O. Pearce <spearce@spearce.org> | 2007-10-16 08:15:25 +0400 |
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committer | Shawn O. Pearce <spearce@spearce.org> | 2007-10-16 08:15:25 +0400 |
commit | 2e13e5d89252ceef606a0a7be32dbf5bea7e5aca (patch) | |
tree | 91f34e2fa799880e917238a7794b3dde35536c09 /contrib/hooks/setgitperms.perl | |
parent | ccfc02a30057a5fa7376e1fc8e8c3fe5478556f4 (diff) | |
parent | d55e7c3acf72413563e695a19f7f66efac442064 (diff) |
Merge branch 'master' into db/fetch-pack
There's a number of tricky conflicts between master and
this topic right now due to the rewrite of builtin-push.
Junio must have handled these via rerere; I'd rather not
deal with them again so I'm pre-merging master into the
topic. Besides this topic somehow started to depend on
the strbuf series that was in next, but is now in master.
It no longer compiles on its own without the strbuf API.
* master: (184 commits)
Whip post 1.5.3.4 maintenance series into shape.
Minor usage update in setgitperms.perl
manual: use 'URL' instead of 'url'.
manual: add some markup.
manual: Fix example finding commits referencing given content.
Fix wording in push definition.
Fix some typos, punctuation, missing words, minor markup.
manual: Fix or remove em dashes.
Add a --dry-run option to git-push.
Add a --dry-run option to git-send-pack.
Fix in-place editing functions in convert.c
instaweb: support for Ruby's WEBrick server
instaweb: allow for use of auto-generated scripts
Add 'git-p4 commit' as an alias for 'git-p4 submit'
hg-to-git speedup through selectable repack intervals
git-svn: respect Subversion's [auth] section configuration values
gtksourceview2 support for gitview
fix contrib/hooks/post-receive-email hooks.recipients error message
Support cvs via git-shell
rebase -i: use diff plumbing instead of porcelain
...
Conflicts:
Makefile
builtin-push.c
rsh.c
Diffstat (limited to 'contrib/hooks/setgitperms.perl')
-rw-r--r-- | contrib/hooks/setgitperms.perl | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/contrib/hooks/setgitperms.perl b/contrib/hooks/setgitperms.perl new file mode 100644 index 0000000000..dab7c8e3a1 --- /dev/null +++ b/contrib/hooks/setgitperms.perl @@ -0,0 +1,214 @@ +#!/usr/bin/perl +# +# Copyright (c) 2006 Josh England +# +# This script can be used to save/restore full permissions and ownership data +# within a git working tree. +# +# To save permissions/ownership data, place this script in your .git/hooks +# directory and enable a `pre-commit` hook with the following lines: +# #!/bin/sh +# SUBDIRECTORY_OK=1 . git-sh-setup +# $GIT_DIR/hooks/setgitperms.perl -r +# +# To restore permissions/ownership data, place this script in your .git/hooks +# directory and enable a `post-merge` and `post-checkout` hook with the +# following lines: +# #!/bin/sh +# SUBDIRECTORY_OK=1 . git-sh-setup +# $GIT_DIR/hooks/setgitperms.perl -w +# +use strict; +use Getopt::Long; +use File::Find; +use File::Basename; + +my $usage = +"Usage: setgitperms.perl [OPTION]... <--read|--write> +This program uses a file `.gitmeta` to store/restore permissions and uid/gid +info for all files/dirs tracked by git in the repository. + +---------------------------------Read Mode------------------------------------- +-r, --read Reads perms/etc from working dir into a .gitmeta file +-s, --stdout Output to stdout instead of .gitmeta +-d, --diff Show unified diff of perms file (XOR with --stdout) + +---------------------------------Write Mode------------------------------------ +-w, --write Modify perms/etc in working dir to match the .gitmeta file +-v, --verbose Be verbose + +\n"; + +my ($stdout, $showdiff, $verbose, $read_mode, $write_mode); + +if ((@ARGV < 0) || !GetOptions( + "stdout", \$stdout, + "diff", \$showdiff, + "read", \$read_mode, + "write", \$write_mode, + "verbose", \$verbose, + )) { die $usage; } +die $usage unless ($read_mode xor $write_mode); + +my $topdir = `git-rev-parse --show-cdup` or die "\n"; chomp $topdir; +my $gitdir = $topdir . '.git'; +my $gitmeta = $topdir . '.gitmeta'; + +if ($write_mode) { + # Update the working dir permissions/ownership based on data from .gitmeta + open (IN, "<$gitmeta") or die "Could not open $gitmeta for reading: $!\n"; + while (defined ($_ = <IN>)) { + chomp; + if (/^(.*) mode=(\S+)\s+uid=(\d+)\s+gid=(\d+)/) { + # Compare recorded perms to actual perms in the working dir + my ($path, $mode, $uid, $gid) = ($1, $2, $3, $4); + my $fullpath = $topdir . $path; + my (undef,undef,$wmode,undef,$wuid,$wgid) = lstat($fullpath); + $wmode = sprintf "%04o", $wmode & 07777; + if ($mode ne $wmode) { + $verbose && print "Updating permissions on $path: old=$wmode, new=$mode\n"; + chmod oct($mode), $fullpath; + } + if ($uid != $wuid || $gid != $wgid) { + if ($verbose) { + # Print out user/group names instead of uid/gid + my $pwname = getpwuid($uid); + my $grpname = getgrgid($gid); + my $wpwname = getpwuid($wuid); + my $wgrpname = getgrgid($wgid); + $pwname = $uid if !defined $pwname; + $grpname = $gid if !defined $grpname; + $wpwname = $wuid if !defined $wpwname; + $wgrpname = $wgid if !defined $wgrpname; + + print "Updating uid/gid on $path: old=$wpwname/$wgrpname, new=$pwname/$grpname\n"; + } + chown $uid, $gid, $fullpath; + } + } + else { + warn "Invalid input format in $gitmeta:\n\t$_\n"; + } + } + close IN; +} +elsif ($read_mode) { + # Handle merge conflicts in the .gitperms file + if (-e "$gitdir/MERGE_MSG") { + if (`grep ====== $gitmeta`) { + # Conflict not resolved -- abort the commit + print "PERMISSIONS/OWNERSHIP CONFLICT\n"; + print " Resolve the conflict in the $gitmeta file and then run\n"; + print " `.git/hooks/setgitperms.perl --write` to reconcile.\n"; + exit 1; + } + elsif (`grep $gitmeta $gitdir/MERGE_MSG`) { + # A conflict in .gitmeta has been manually resolved. Verify that + # the working dir perms matches the current .gitmeta perms for + # each file/dir that conflicted. + # This is here because a `setgitperms.perl --write` was not + # performed due to a merge conflict, so permissions/ownership + # may not be consistent with the manually merged .gitmeta file. + my @conflict_diff = `git show \$(cat $gitdir/MERGE_HEAD)`; + my @conflict_files; + my $metadiff = 0; + + # Build a list of files that conflicted from the .gitmeta diff + foreach my $line (@conflict_diff) { + if ($line =~ m|^diff --git a/$gitmeta b/$gitmeta|) { + $metadiff = 1; + } + elsif ($line =~ /^diff --git/) { + $metadiff = 0; + } + elsif ($metadiff && $line =~ /^\+(.*) mode=/) { + push @conflict_files, $1; + } + } + + # Verify that each conflict file now has permissions consistent + # with the .gitmeta file + foreach my $file (@conflict_files) { + my $absfile = $topdir . $file; + my $gm_entry = `grep "^$file mode=" $gitmeta`; + if ($gm_entry =~ /mode=(\d+) uid=(\d+) gid=(\d+)/) { + my ($gm_mode, $gm_uid, $gm_gid) = ($1, $2, $3); + my (undef,undef,$mode,undef,$uid,$gid) = lstat("$absfile"); + $mode = sprintf("%04o", $mode & 07777); + if (($gm_mode ne $mode) || ($gm_uid != $uid) + || ($gm_gid != $gid)) { + print "PERMISSIONS/OWNERSHIP CONFLICT\n"; + print " Mismatch found for file: $file\n"; + print " Run `.git/hooks/setgitperms.perl --write` to reconcile.\n"; + exit 1; + } + } + else { + print "Warning! Permissions/ownership no longer being tracked for file: $file\n"; + } + } + } + } + + # No merge conflicts -- write out perms/ownership data to .gitmeta file + unless ($stdout) { + open (OUT, ">$gitmeta.tmp") or die "Could not open $gitmeta.tmp for writing: $!\n"; + } + + my @files = `git-ls-files`; + my %dirs; + + foreach my $path (@files) { + chomp $path; + # We have to manually add stats for parent directories + my $parent = dirname($path); + while (!exists $dirs{$parent}) { + $dirs{$parent} = 1; + next if $parent eq '.'; + printstats($parent); + $parent = dirname($parent); + } + # Now the git-tracked file + printstats($path); + } + + # diff the temporary metadata file to see if anything has changed + # If no metadata has changed, don't overwrite the real file + # This is just so `git commit -a` doesn't try to commit a bogus update + unless ($stdout) { + if (! -e $gitmeta) { + rename "$gitmeta.tmp", $gitmeta; + } + else { + my $diff = `diff -U 0 $gitmeta $gitmeta.tmp`; + if ($diff ne '') { + rename "$gitmeta.tmp", $gitmeta; + } + else { + unlink "$gitmeta.tmp"; + } + if ($showdiff) { + print $diff; + } + } + close OUT; + } + # Make sure the .gitmeta file is tracked + system("git add $gitmeta"); +} + + +sub printstats { + my $path = $_[0]; + $path =~ s/@/\@/g; + my (undef,undef,$mode,undef,$uid,$gid) = lstat($path); + $path =~ s/%/\%/g; + if ($stdout) { + print $path; + printf " mode=%04o uid=$uid gid=$gid\n", $mode & 07777; + } + else { + print OUT $path; + printf OUT " mode=%04o uid=$uid gid=$gid\n", $mode & 07777; + } +} |