| Commit message (Collapse) | Author | Age | Files | Lines |
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File descriptors leaked every time sss_mmap_cache_reinit was
called and also the old memory cache was still maped in memory
(munmap was not called). This patch adds destructor for memory
cache context to call close() and munmap() automaticly.
https://fedorahosted.org/sssd/ticket/1826
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This patch adds debug message for the case if sssd
fails to open old mc file for some other reason than
the file does not exist.
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If a fatal EFAULT error is returned by the internal function that frees used
memory invalidate the whole cache and reinit it. This way we avoid further
corruption and insure clients see consistent data.
Also insure we use the right context in init() and we use talloc_zfree() in
reinit so that if the init() later fails we do not leave around a pointer
to free memory in the callers.
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We should never try to invalidate an already invalid record as
internal pointers will not be consistent. Carefully test that the
record really is valid when we are fishing for free space, and
properly invalidate records or return a fatal error if something
goes wrong.
In order to make the code more robust always invalidate the whole
data space on initialization by setting all bits to 1, and make sure
to invalidate the whole last allocated slot by converting rec->len to
the number of slots instead of just the space used.
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We were holding up slots when entries were invalidated directly an not through
our primitive garbage collection scheme.
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Although it should enver happen that we pass in an invalid hash it
is always better to just not do anything than access memory ouf of
the hash table. It can lead to segfaults, or worse referencing
memory that should not be touched.
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https://fedorahosted.org/sssd/ticket/1704
The function is short enough so that we can simply stick with return and
release resources before returning as appropriate.
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These functions can be called from the nss responder to invalidate
records that have ceased to exist or that need to be refreshed the
first time an application needs them.
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https://fedorahosted.org/sssd/ticket/1584
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https://fedorahosted.org/sssd/ticket/1318
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https://fedorahosted.org/sssd/ticket/1209
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