From 06cc69d44c8ff2b652527357f28acd4cbe77c814 Mon Sep 17 00:00:00 2001 From: Jan Janssen Date: Sat, 6 Sep 2014 10:36:34 +0200 Subject: sd-journal: fix sd_journal_enumerate_unique skipping values sd_journal_enumerate_unique will lock its mmap window to prevent it from being released by calling mmap_cache_get with keep_always=true. This call may return windows that are wider, but compatible with the parameters provided to it. This can result in a mismatch where the window to be released cannot properly be selected, because we have more than one window matching the parameters of mmap_cache_release. Therefore, introduce a release_cookie to be used when releasing the window. https://bugs.freedesktop.org/show_bug.cgi?id=79380 --- src/journal/mmap-cache.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'src/journal/mmap-cache.h') diff --git a/src/journal/mmap-cache.h b/src/journal/mmap-cache.h index 647555a73e..76e5316248 100644 --- a/src/journal/mmap-cache.h +++ b/src/journal/mmap-cache.h @@ -40,14 +40,12 @@ int mmap_cache_get( uint64_t offset, size_t size, struct stat *st, - void **ret); + void **ret, + void **release_cookie); int mmap_cache_release( MMapCache *m, int fd, - int prot, - unsigned context, - uint64_t offset, - size_t size); + void *release_cookie); void mmap_cache_close_fd(MMapCache *m, int fd); void mmap_cache_close_context(MMapCache *m, unsigned context); -- cgit v1.2.3