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Introduce xbps_repo_{un,}lock() to serialize write access to repodata.

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We use a simple file lock that is created with O_CREAT|O_EXCL.
This should fix the concurrency issues with multiple processes
running xbps-rindex -a/-c on the same repository/arch combo.
This commit is contained in:
Juan RP
2015-03-25 12:00:59 +01:00
parent bb4ebf8152
commit 9a16283575
7 changed files with 120 additions and 44 deletions
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4
lib/rpool.c
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@@ -92,7 +92,7 @@ xbps_regget_repo(struct xbps_handle *xhp, const char *url)
if (strcmp(repouri, url))
continue;
repo = xbps_repo_open(xhp, repouri, false);
repo = xbps_repo_open(xhp, repouri);
if (!repo)
return NULL;
@@ -148,7 +148,7 @@ xbps_rpool_foreach(struct xbps_handle *xhp,
for (unsigned int i = 0; i < xbps_array_count(xhp->repositories); i++) {
xbps_array_get_cstring_nocopy(xhp->repositories, i, &repouri);
if ((repo = xbps_rpool_get_repo(repouri)) == NULL) {
repo = xbps_repo_open(xhp, repouri, false);
repo = xbps_repo_open(xhp, repouri);
if (!repo)
continue;
SIMPLEQ_INSERT_TAIL(&rpool_queue, repo, entries);