1 /* Part of libhgfs - (c) 2009, D.C. van Moolenbroek */ 2 3 #include "inc.h" 4 5 /*===========================================================================* 6 * hgfs_opendir * 7 *===========================================================================*/ 8 int hgfs_opendir(const char *path, sffs_dir_t *handle) 9 { 10 /* Open a directory. Store a directory handle upon success. 11 */ 12 int r; 13 14 RPC_REQUEST(HGFS_REQ_OPENDIR); 15 16 path_put(path); 17 18 if ((r = rpc_query()) != OK) 19 return r; 20 21 *handle = (sffs_dir_t)RPC_NEXT32; 22 23 return OK; 24 } 25 26 /*===========================================================================* 27 * hgfs_readdir * 28 *===========================================================================*/ 29 int hgfs_readdir(sffs_dir_t handle, unsigned int index, char *buf, 30 size_t size, struct sffs_attr *attr) 31 { 32 /* Read a directory entry from an open directory, using a zero-based index 33 * number. Upon success, the resulting path name is stored in the given buffer 34 * and the given attribute structure is filled selectively as requested. Upon 35 * error, the contents of the path buffer and attribute structure are 36 * undefined. ENOENT is returned upon end of directory. 37 */ 38 int r; 39 40 RPC_REQUEST(HGFS_REQ_READDIR); 41 RPC_NEXT32 = (u32_t)handle; 42 RPC_NEXT32 = index; 43 44 /* EINVAL signifies end of directory. */ 45 if ((r = rpc_query()) != OK) 46 return (r == EINVAL) ? ENOENT : OK; 47 48 attr_get(attr); 49 50 if ((r = path_get(buf, size)) != OK) 51 return r; 52 53 /* VMware Player 3 returns an empty name, instead of EINVAL, when reading 54 * from an EOF position right after opening the directory handle. Seems to be 55 * a newly introduced bug.. 56 */ 57 return (!buf[0]) ? ENOENT : OK; 58 } 59 60 /*===========================================================================* 61 * hgfs_closedir * 62 *===========================================================================*/ 63 int hgfs_closedir(sffs_dir_t handle) 64 { 65 /* Close an open directory. 66 */ 67 68 RPC_REQUEST(HGFS_REQ_CLOSEDIR); 69 RPC_NEXT32 = (u32_t)handle; 70 71 return rpc_query(); 72 } 73