note 92772 rejected from function.shm-put-var by danbrown

Note Submitter: ant_mail you_know_symbol inbox dot ru ---- shm_put_var will remove specified var if there is not enough memory. To prevent this use this patch: --- ext/sysvshm/sysvshm.c.orig Sat Aug 8 13:22:18 2009 +++ ext/sysvshm/sysvshm.c Sat Aug 8 13:36:45 2009 @@ -371,13 +371,17 @@ * inserts an ascii-string into shared memory */ static int php_put_shm_data(sysvshm_chunk_head *ptr, long key, char *data, long len) { - sysvshm_chunk *shm_var; + sysvshm_chunk *shm_var, *chunk_ptr; long total_size; long shm_varpos; total_size = ((long) (len + sizeof(sysvshm_chunk) - 1) / 4) * 4 + 4; /* 4-byte alligment */ if ((shm_varpos = php_check_shm_data(ptr, key)) > 0) { + + /* remove current data only if we can allocate new data */ + chunk_ptr = (sysvshm_chunk *) ((char *) ptr + shm_varpos); + if (chunk_ptr->length + ptr->free > total_size) php_remove_shm_data(ptr, shm_varpos); }