diff options
Diffstat (limited to 'third_party/git/contrib/hooks/setgitperms.perl')
-rwxr-xr-x | third_party/git/contrib/hooks/setgitperms.perl | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/third_party/git/contrib/hooks/setgitperms.perl b/third_party/git/contrib/hooks/setgitperms.perl deleted file mode 100755 index 2770a1b1d205..000000000000 --- a/third_party/git/contrib/hooks/setgitperms.perl +++ /dev/null @@ -1,214 +0,0 @@ -#!/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; - } -} |