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The following message appears when attempting to edit a topic:

TWiki detected an internal error - please check your TWiki logs and webserver logs for more information.

RCS: failed to create path: File exists

The following lines appeared in /var/log/audit/audit.log:

type=AVC msg=audit(1137739459.945:9317662): avc:  denied  { getattr } for  pid=21461 comm="edit" name=var dev=dm-0 ino=5003713 scontext=root:system_r:httpd_sys_script_t tcontext=system_u:object_r:var_t tclass=dir
type=SYSCALL msg=audit(1137739459.945:9317662): arch=40000003 syscall=195 success=no exit=-13 a0=93598a0 a1=917d0c8 a2=568ff4 a3=93598a0 items=1 pid=21461 auid=4294967295 uid=48 gid=48 euid=48 suid=48 fsuid=48 egid=48 sgid=48 fsgid=48 comm="edit" exe="/usr/bin/perl"
type=AVC_PATH msg=audit(1137739459.945:9317662):  path="/var"
type=PATH msg=audit(1137739459.945:9317662): item=0 name="/var" inode=5003713 dev=fd:00 mode=040755 ouid=0 ogid=0 rdev=00:00

Problem tracked to sub _mkPathTo in lib/Store/RcsFile.pm.

Attempt to stat first directory in path using -e $path (in this case, /var) is rejected by SELinux so directory appears not to exist. _mkPathTo then attempts to create the directory and reports failure.

Could change SELinux permissions, but better if Dakar works out of the box.

This code works:

sub _mkPathTo {
    use File::Path;
    use File::Basename;

    my $file = shift;

    my $path = dirname($file);
    eval { mkpath($path, 0, $TWiki::cfg{RCS}{dirPermission}) };
    if ($@) {
       throw Error::Simple("RCS: failed to create ${path}: $!");

Thanks John

SVN 8407


Summary Error editing topic because of clash with SELinux default Apache permissions
ReportedBy TWiki:Main.JohnMurphy

SVN Range 4.0.0-beta6
AppliesTo Engine

Priority Normal
CurrentState Closed

Checkins 8407
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Topic revision: r5 - 2006-01-21 - CrawfordCurrie
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