Fix concurrency issues in pkgdb: only allow 1 write transaction at the same time.

This implementation relies on a POSIX named semaphore, which is also required by xbps-rindex(8).
2014-02-23 08:23:14 +01:00
parent bc2bada045
commit 4d1cdcac0c
9 changed files with 115 additions and 16 deletions
--- a/4
+++ b/4
@@ -1,5 +1,9 @@
 xbps-0.33 (???):

+ * Only allow a single writer to the pkgdb to avoid concurrency issues
+   when performing multiple write transactions (install, update or remove).
+   The implementation relies on a POSIX named semaphore.
+
 * Do not continue the transaction if downloading a binpkg/signature file
   has failed for some reason, stop and return error immediately.