ef7b484e5c
This Shared Folders File System library (libsffs) now contains all the file system logic originally in HGFS. The actual HGFS server code is now a stub that passes on all the work to libsffs. The libhgfs library is changed accordingly.
103 lines
3 KiB
C
103 lines
3 KiB
C
/* Part of libhgfs - (c) 2009, D.C. van Moolenbroek */
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#include "inc.h"
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#include <sys/stat.h>
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/*===========================================================================*
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* attr_get *
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*===========================================================================*/
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void attr_get(attr)
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struct sffs_attr *attr;
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{
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/* Get attribute information from the RPC buffer, storing the requested parts
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* in the given attr structure.
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*/
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mode_t mode;
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u32_t size_lo, size_hi;
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mode = (RPC_NEXT32) ? S_IFDIR : S_IFREG;
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size_lo = RPC_NEXT32;
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size_hi = RPC_NEXT32;
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if (attr->a_mask & SFFS_ATTR_SIZE)
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attr->a_size = make64(size_lo, size_hi);
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time_get((attr->a_mask & SFFS_ATTR_CRTIME) ? &attr->a_crtime : NULL);
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time_get((attr->a_mask & SFFS_ATTR_ATIME) ? &attr->a_atime : NULL);
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time_get((attr->a_mask & SFFS_ATTR_MTIME) ? &attr->a_mtime : NULL);
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time_get((attr->a_mask & SFFS_ATTR_CTIME) ? &attr->a_ctime : NULL);
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mode |= HGFS_PERM_TO_MODE(RPC_NEXT8);
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if (attr->a_mask & SFFS_ATTR_MODE) attr->a_mode = mode;
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}
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/*===========================================================================*
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* hgfs_getattr *
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*===========================================================================*/
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int hgfs_getattr(path, attr)
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char *path;
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struct sffs_attr *attr;
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{
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/* Get selected attributes of a file by path name.
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*/
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int r;
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RPC_REQUEST(HGFS_REQ_GETATTR);
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path_put(path);
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if ((r = rpc_query()) != OK)
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return r;
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attr_get(attr);
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return OK;
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}
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/*===========================================================================*
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* hgfs_setattr *
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*===========================================================================*/
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int hgfs_setattr(path, attr)
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char *path;
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struct sffs_attr *attr;
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{
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/* Set selected attributes of a file by path name.
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*/
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u8_t mask;
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RPC_REQUEST(HGFS_REQ_SETATTR);
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/* This library implements the HGFS v1 protocol, which is largely
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* path-oriented. This is the only method to set the file size, and thus,
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* truncating a deleted file is not possible. This has been fixed in later
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* HGFS protocol version (v2/v3).
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*/
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mask = 0;
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if (attr->a_mask & SFFS_ATTR_MODE) mask |= HGFS_ATTR_MODE;
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if (attr->a_mask & SFFS_ATTR_SIZE) mask |= HGFS_ATTR_SIZE;
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if (attr->a_mask & SFFS_ATTR_CRTIME) mask |= HGFS_ATTR_CRTIME;
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if (attr->a_mask & SFFS_ATTR_ATIME)
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mask |= HGFS_ATTR_ATIME | HGFS_ATTR_ATIME_SET;
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if (attr->a_mask & SFFS_ATTR_MTIME)
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mask |= HGFS_ATTR_MTIME | HGFS_ATTR_MTIME_SET;
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if (attr->a_mask & SFFS_ATTR_CTIME) mask |= HGFS_ATTR_CTIME;
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RPC_NEXT8 = mask;
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RPC_NEXT32 = !!(S_ISDIR(attr->a_mode));
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RPC_NEXT32 = ex64lo(attr->a_size);
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RPC_NEXT32 = ex64hi(attr->a_size);
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time_put((attr->a_mask & HGFS_ATTR_CRTIME) ? &attr->a_crtime : NULL);
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time_put((attr->a_mask & HGFS_ATTR_ATIME) ? &attr->a_atime : NULL);
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time_put((attr->a_mask & HGFS_ATTR_MTIME) ? &attr->a_mtime : NULL);
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time_put((attr->a_mask & HGFS_ATTR_CTIME) ? &attr->a_ctime : NULL);
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RPC_NEXT8 = HGFS_MODE_TO_PERM(attr->a_mode);
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path_put(path);
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return rpc_query();
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}
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