Blame SOURCES/BZ-1097383-usr-readonly.patch

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commit 507182919894e9bf75b08a75cb22c49d852c8278
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Author: James Antill <james@and.org>
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Date:   Wed May 21 15:14:55 2014 -0400
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    Check /usr for writability before running a transaction.
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diff --git a/docs/yum.conf.5 b/docs/yum.conf.5
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index 4ec7689..c39544d 100644
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--- a/docs/yum.conf.5
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+++ b/docs/yum.conf.5
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@@ -892,6 +892,11 @@ shouldn't be needed as yum should always solve or fail, however it has been
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 observed that it can loop forever with very large system upgrades. Setting
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 this to `0' (or "<forever>") makes yum try forever. Default is `100'.
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+.IP
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+\fBusr_w_check\fR
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+Either `0' or `1'. Set this to `0' to disable the checking for writability on
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+/usr in the installroot (when going into the depsolving stage). Default is `1'
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+(perform the check).
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 .SH "[repository] OPTIONS"
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 .LP 
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diff --git a/yum/config.py b/yum/config.py
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index 7bb56d0..f0f4e96 100644
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--- a/yum/config.py
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+++ b/yum/config.py
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@@ -906,6 +906,8 @@ class YumConf(StartupConf):
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     check_config_file_age = BoolOption(True)
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+    usr_w_check = BoolOption(True)
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+
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     _reposlist = []
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     def dump(self):
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diff --git a/yummain.py b/yummain.py
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index fa76af8..ee8d632 100755
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--- a/yummain.py
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+++ b/yummain.py
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@@ -209,6 +209,17 @@ def main(args):
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             logger.critical(msg)
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         if unlock(): return 200
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         return 3
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+
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+    # Mainly for ostree, but might be useful for others.
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+    if base.conf.usr_w_check:
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+        usrinstpath = base.conf.installroot + "/usr"
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+        usrinstpath = usrinstpath.replace('//', '/')
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+        if not os.access(usrinstpath, os.W_OK):
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+            logger.critical(_('No write access to %s directory') % usrinstpath)
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+            logger.critical(_('  Maybe this is an ostree image?'))
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+            logger.critical(_('  To disable you can use --setopt=usr_w_check=false'))
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+            if unlock(): return 200
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+            return 1
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     # Depsolve stage
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     verbose_logger.log(logginglevels.INFO_2, _('Resolving Dependencies'))
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commit 6e64b142014dc3c5489aed7966f0948948054fb7
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Author: James Antill <james@and.org>
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Date:   Wed May 21 18:29:28 2014 -0400
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    Check for existance, so mock etc. is happy.
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diff --git a/yummain.py b/yummain.py
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index ee8d632..24bbe6c 100755
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--- a/yummain.py
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+++ b/yummain.py
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@@ -214,7 +214,8 @@ def main(args):
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     if base.conf.usr_w_check:
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         usrinstpath = base.conf.installroot + "/usr"
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         usrinstpath = usrinstpath.replace('//', '/')
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-        if not os.access(usrinstpath, os.W_OK):
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+        if (os.path.exists(usrinstpath) and
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+            not os.access(usrinstpath, os.W_OK)):
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             logger.critical(_('No write access to %s directory') % usrinstpath)
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             logger.critical(_('  Maybe this is an ostree image?'))
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             logger.critical(_('  To disable you can use --setopt=usr_w_check=false'))