From d9e7c8219fd8b3d770301a87bc1cd62b07b989ca Mon Sep 17 00:00:00 2001 From: Jeremy Allison Date: Tue, 26 Mar 2013 15:46:06 -0700 Subject: [PATCH] Modify fill_ea_chained_buffer() to be able to do size calculation only, no marshalling. Signed-off-by: Jeremy Allison Reviewed-by: David Disseldorp --- source3/smbd/trans2.c | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions(-) diff --git a/source3/smbd/trans2.c b/source3/smbd/trans2.c index ee16bf9b5332..61252ba50736 100644 --- a/source3/smbd/trans2.c +++ b/source3/smbd/trans2.c @@ -459,6 +459,7 @@ static NTSTATUS fill_ea_chained_buffer(TALLOC_CTX *mem_ctx, { uint8_t *p = (uint8_t *)pdata; uint8_t *last_start = NULL; + bool do_store_data = (pdata != NULL); *ret_data_size = 0; @@ -471,7 +472,7 @@ static NTSTATUS fill_ea_chained_buffer(TALLOC_CTX *mem_ctx, fstring dos_ea_name; size_t this_size; - if (last_start) { + if (last_start != NULL && do_store_data) { SIVAL(last_start, 0, PTR_DIFF(p, last_start)); } last_start = p; @@ -492,19 +493,21 @@ static NTSTATUS fill_ea_chained_buffer(TALLOC_CTX *mem_ctx, this_size += pad; } - if (this_size > total_data_size) { - return NT_STATUS_INFO_LENGTH_MISMATCH; + if (do_store_data) { + if (this_size > total_data_size) { + return NT_STATUS_INFO_LENGTH_MISMATCH; + } + + /* We know we have room. */ + SIVAL(p, 0x00, 0); /* next offset */ + SCVAL(p, 0x04, ea_list->ea.flags); + SCVAL(p, 0x05, dos_namelen); + SSVAL(p, 0x06, ea_list->ea.value.length); + strlcpy((char *)(p+0x08), dos_ea_name, dos_namelen+1); + memcpy(p + 0x08 + dos_namelen + 1, ea_list->ea.value.data, ea_list->ea.value.length); + total_data_size -= this_size; } - /* We know we have room. */ - SIVAL(p, 0x00, 0); /* next offset */ - SCVAL(p, 0x04, ea_list->ea.flags); - SCVAL(p, 0x05, dos_namelen); - SSVAL(p, 0x06, ea_list->ea.value.length); - strlcpy((char *)(p+0x08), dos_ea_name, dos_namelen+1); - memcpy(p + 0x08 + dos_namelen + 1, ea_list->ea.value.data, ea_list->ea.value.length); - - total_data_size -= this_size; p += this_size; } -- 2.34.1