X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=KernelLand%2FKernel%2Fvfs%2Ffs%2Froot.c;h=ee2e72cbf7fc37d60d511c19d4cd30104cefe447;hb=097d17ad093701091b0925aa7b13378cb9aed9df;hp=abe594576bf62d071164a098e4ff6f050bd9f910;hpb=ce452fe1a1b499f519aaa7cb9722d4beeb2a6644;p=tpg%2Facess2.git diff --git a/KernelLand/Kernel/vfs/fs/root.c b/KernelLand/Kernel/vfs/fs/root.c index abe59457..ee2e72cb 100644 --- a/KernelLand/Kernel/vfs/fs/root.c +++ b/KernelLand/Kernel/vfs/fs/root.c @@ -1,6 +1,11 @@ /* - * AcessMicro VFS + * Acess2 Kernel + * - By John Hodge (thePowersGang) + * + * vfs/fs/root.c * - Root Filesystem Driver + * + * TODO: Restrict to directories only */ #define DEBUG 0 #include @@ -13,11 +18,11 @@ // === PROTOTYPES === tVFS_Node *Root_InitDevice(const char *Device, const char **Options); - int Root_MkNod(tVFS_Node *Node, const char *Name, Uint Flags); -tVFS_Node *Root_FindDir(tVFS_Node *Node, const char *Name); -char *Root_ReadDir(tVFS_Node *Node, int Pos); -size_t Root_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Buffer); -size_t Root_Write(tVFS_Node *Node, off_t Offset, size_t Length, const void *Buffer); +tVFS_Node *Root_MkNod(tVFS_Node *Node, const char *Name, Uint Flags); +tVFS_Node *Root_FindDir(tVFS_Node *Node, const char *Name, Uint Flags); + int Root_ReadDir(tVFS_Node *Node, int Pos, char Dest[FILENAME_MAX]); +size_t Root_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Buffer, Uint Flags); +size_t Root_Write(tVFS_Node *Node, off_t Offset, size_t Length, const void *Buffer, Uint Flags); tRamFS_File *Root_int_AllocFile(void); // === GLOBALS === @@ -82,7 +87,7 @@ tVFS_Node *Root_InitDevice(const char *Device, const char **Options) * \fn int Root_MkNod(tVFS_Node *Node, const char *Name, Uint Flags) * \brief Create an entry in the root directory */ -int Root_MkNod(tVFS_Node *Node, const char *Name, Uint Flags) +tVFS_Node *Root_MkNod(tVFS_Node *Node, const char *Name, Uint Flags) { tRamFS_File *parent = Node->ImplPtr; tRamFS_File *child; @@ -91,16 +96,18 @@ int Root_MkNod(tVFS_Node *Node, const char *Name, Uint Flags) ENTER("pNode sName xFlags", Node, Name, Flags); LOG("Sanity check name length - %i > %i", strlen(Name)+1, sizeof(child->Name)); - if(strlen(Name) + 1 > sizeof(child->Name)) - LEAVE_RET('i', EINVAL); + if(strlen(Name) + 1 > sizeof(child->Name)) { + errno = EINVAL; + LEAVE_RET('n', NULL); + } // Find last child, while we're at it, check for duplication for( child = parent->Data.FirstChild; child; prev = child, child = child->Next ) { if(strcmp(child->Name, Name) == 0) { LOG("Duplicate"); - LEAVE('i', EEXIST); - return EEXIST; + errno = EEXIST; + LEAVE_RET('n', NULL); } } @@ -139,15 +146,15 @@ int Root_MkNod(tVFS_Node *Node, const char *Name, Uint Flags) parent->Node.Size ++; - LEAVE('i', EOK); - return EOK; + LEAVE('n', &child->Node); + return &child->Node; } /** * \fn tVFS_Node *Root_FindDir(tVFS_Node *Node, const char *Name) * \brief Find an entry in the filesystem */ -tVFS_Node *Root_FindDir(tVFS_Node *Node, const char *Name) +tVFS_Node *Root_FindDir(tVFS_Node *Node, const char *Name, Uint Flags) { tRamFS_File *parent = Node->ImplPtr; tRamFS_File *child = parent->Data.FirstChild; @@ -172,22 +179,25 @@ tVFS_Node *Root_FindDir(tVFS_Node *Node, const char *Name) * \fn char *Root_ReadDir(tVFS_Node *Node, int Pos) * \brief Get an entry from the filesystem */ -char *Root_ReadDir(tVFS_Node *Node, int Pos) +int Root_ReadDir(tVFS_Node *Node, int Pos, char Dest[FILENAME_MAX]) { tRamFS_File *parent = Node->ImplPtr; tRamFS_File *child = parent->Data.FirstChild; for( ; child && Pos--; child = child->Next ) ; - if(child) return strdup(child->Name); + if(child) { + strncpy(Dest, child->Name, FILENAME_MAX); + return 0; + } - return NULL; + return -ENOENT; } /** * \brief Read from a file in the root directory */ -size_t Root_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Buffer) +size_t Root_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Buffer, Uint Flags) { tRamFS_File *file = Node->ImplPtr; @@ -206,7 +216,7 @@ size_t Root_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Buffer) /** * \brief Write to a file in the root directory */ -size_t Root_Write(tVFS_Node *Node, off_t Offset, size_t Length, const void *Buffer) +size_t Root_Write(tVFS_Node *Node, off_t Offset, size_t Length, const void *Buffer, Uint Flags) { tRamFS_File *file = Node->ImplPtr;