Filesystem services: Difference between revisions

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 |-
 | 1006 || [[#OutputAccessLogToSdCard]]
+|}
+== Permissions ==
+Each time permissions are checked, the [[#fsp-pr|process-obj]] is loaded using the session PID, then a func is called with the permissions-type. The func retval is checked, then the permissions [[Error_codes|error]] is thrown if needed.
+Internally in that process-obj load func, it will load the obj as normal when the PID is >6, otherwise it will use a fixed obj. If not done already, that fixed obj will be initialized using fixed input data, via the same code used internally by [[#fsp-pr]].
+In general this func uses the input permissions-type to determine what mask value to use. That value is masked with the [[NPDM|permissions]] from the above process-obj. When the result is 0, 0 is returned, otherwise non-zero is returned. The default non-zero retval is basically 0x3.
+Panic is triggered when the input type is >0x26.
+{| class="wikitable" border="1"
+|-
+! Type(s) || Mask || Non-zero retval || Notes
+|-
+| 0xA 0xD 0x16 0x1F 0x20 0x21 0x22 || 0x8000000000000080 || Default ||
+|-
+| 0x15 0x17 0x18 0x19 0x1A 0x1B 0x1C || 0x8000000000010080 || Default ||
+|-
+| 0x0 0x1 0x2 0x3 0x4 0x5 || 0x8000000000000801 || 0x1 ||
+|-
+| 0x9 0x1D 0x1E || 0x8000000000000084 || Default ||
+|-
+| 0xB 0xC || 0x8000000000008080 || Default ||
+|-
+| 0xE 0x23 || 0xc000000000200000 || Default ||
+|-
+| 0x12 0x13 || 0x8000000000000020 || Default ||
+|-
+| 0x6 || || || In this case it appears the func returns retval & 0xff, where retval = {bit0=0, bit1..bit63=obj_permissions starting at bit0}?
+|-
+| 0x7 || 0x8000000000000800 || Default ||
+|-
+| 0x8 || 0x8000000000001000 || Default ||
+|-
+| 0xF || 0x8000000000000010 || Default ||
+|-
+| 0x10 || 0x8000000000040020; || Default ||
+|-
+| 0x11 || 0x8000000000000028 || Default ||
+|-
+| 0x14 || 0x8000000000010082 || Default ||
+|-
+| 0x24 || 0x8000000000000100 || Default ||
+|-
+| 0x25 || 0x8000000000100008 || 0x1 ||
+|-
+| 0x26 || 0xC000000000400000 || Default ||
 |}