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Commit Graph

14 Commits

Author SHA1 Message Date
c78f2d0bd1 split some security related functions in their own files.
(no need to include all of smbd files to use some basic sec functions)

also minor compile fixes
couldn't compile to test these due to some kerberos problems wirh 3.0,
but on HEAD they're working well, so I suppose it's ok to commit
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09a218a9f6 Forward port the change to talloc_init() to make all talloc contexts
named. Ensure we can query them.
Jeremy.
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6a58c9bd06 Removed version number from file header.
Changed "SMB/Netbios" to "SMB/CIFS" in file header.
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53723e8748 Add talloc_asprintf_append, which grows an existing string buffer to
contain new print-formatted information.  (Also
talloc_vasprintf_append.)  Idea borrowed from glib.
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4c6c03c8c7 Make TALLOC_CTX and talloc_chunk private to talloc.c.
Add a global singly-linked list of all active talloc pools, so that we
can eventually show how much memory is used for different purposes.
This also gives a check that pools are not being doubly freed.

talloc_init_named now handle a NULL name properly (ie does nothing)

Add accessor talloc_pool_name().
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7da982e926 Doc -
e6be48671d Put PRINTF_ATTRIBUTE on talloc_init_named, talloc_asprintf,
talloc_vasprintf.
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25b97a7435 Start adding some debugging features to talloc based on Samba's
ancient mem_man.c:

Each TALLOC_CTX now has a field to store its purpose, to aid in
tracking down memory bloat.  A new call talloc_init_named() should be
used instead of talloc_init() so that this is set.

Added talloc_vasprintf to be called by varargs functions.
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7a96ca313e the BAD_PTR idea in talloc.h is actually a bad idea - it means callers have no way of telling if the call really failed -
1ab63cf3a6 a much simpler talloc() implementation. This version has the following
advantages:

- memory is trackable by insure
- a very simple talloc_realloc() is possible (I've added it)

It is slower than the previous talloc code, but I don't think that
is going to be a problem. If it is a problem then there are
some ways we can make it faster but I'd like to leave those
until we have tested this a bit and can see what performance
problems might show up in profiling
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d3a56c6042 Added total memory allocated counter to talloc, so we can tell if a talloc
pool is getting bloated. Also added a talloc_zero function to return zeroed memory.
Added debug in rpc_server/srv_pipe_hnd.c so we know when a talloc pool is being
freed. Syncup with srv_pipe_hnd.c from 2.2 so we are freeing memory at the same time.
Jeremy.
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233b9cffa2 reworked talloc() to in order to help track down invalid
memory access.

Tridge, I don't think using 0xdeadbeef for size allocations
of 0 is going to work.  I ended up having to use NULL
as much code that works on UNISTR checks to see if the buffer ptr
is NULL.  So valid code ends up with a seg fault.

Rather than rewriting it all, I added a DEBUG_TALLOC
#ifdef in talloc.h that sets a macro BAD_PTR.
This is the value assigned to ptr for an allocation of 0 bytes.



jerry
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0ff2ce543e Ok - this is a *BIG* change - but it fixes the problems with static strings
in the RPC code. This change was prompted by trying to save a long (>256)
character comment in the printer properties page.

The new system associates a TALLOC_CTX with the pipe struct, and frees
the pool on return of a complete PDU.

A global TALLOC_CTX is used for the odd buffer allocated in the BUFFERxx
code, and is freed in the main loop.

This code works with insure, and seems to be free of memory leaks and
crashes (so far) but there are probably the occasional problem with
code that uses UNISTRxx structs on the stack and expects them to contain
storage without doing a init_unistrXX().

This means that rpcclient will probably be horribly broken.
A TALLOC_CTX also needed associating with the struct cli_state also,
to make the prs_xx code there work.

The main interface change is the addition of a TALLOC_CTX to the
prs_init calls - used for dynamic allocation in the prs_XXX calls.

Now this is in place it should make dynamic allocation of all RPC
memory on unmarshall *much* easier to fix.

Jeremy.
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aa7f815525 implemented talloc() as described on samba-technical. This fixes the
lp_string() bug properly.

we still need to add lp_talloc_free() calls in all the main event
loops, I've only put it in smbd and nmbd thus far.
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