minix3/lib/libvboxfs/vboxfs.c

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2020-02-21 00:59:27 +05:30
/* Part of libvboxfs - (c) 2012, D.C. van Moolenbroek */
#include "inc.h"
vbox_conn_t vboxfs_conn;
vboxfs_root_t vboxfs_root;
static struct sffs_table vboxfs_table = {
.t_open = vboxfs_open,
.t_read = vboxfs_read,
.t_write = vboxfs_write,
.t_close = vboxfs_close,
.t_readbuf = vboxfs_buffer,
.t_writebuf = vboxfs_buffer,
.t_opendir = vboxfs_opendir,
.t_readdir = vboxfs_readdir,
.t_closedir = vboxfs_closedir,
.t_getattr = vboxfs_getattr,
.t_setattr = vboxfs_setattr,
.t_mkdir = vboxfs_mkdir,
.t_unlink = vboxfs_unlink,
.t_rmdir = vboxfs_rmdir,
.t_rename = vboxfs_rename,
.t_queryvol = vboxfs_queryvol
};
/*
* Initialize communication with the VBOX driver, and map the given share.
*/
int
vboxfs_init(char *share, const struct sffs_table **tablep, int *case_insens,
int *read_only)
{
vbox_param_t param[4];
vboxfs_path_t path;
vboxfs_volinfo_t volinfo;
int r;
if ((r = vboxfs_set_path(&path, share)) != OK)
return r;
if ((r = vbox_init()) != OK)
return r;
if ((vboxfs_conn = r = vbox_open("VBoxSharedFolders")) < 0)
return r;
r = vbox_call(vboxfs_conn, VBOXFS_CALL_SET_UTF8, NULL, 0, NULL);
if (r != OK) {
vbox_close(vboxfs_conn);
return r;
}
vbox_set_ptr(&param[0], &path, vboxfs_get_path_size(&path),
VBOX_DIR_OUT);
vbox_set_u32(&param[1], 0);
vbox_set_u32(&param[2], '/'); /* path separator */
vbox_set_u32(&param[3], TRUE); /* case sensitivity - no effect? */
r = vbox_call(vboxfs_conn, VBOXFS_CALL_MAP_FOLDER, param, 4, NULL);
if (r != OK) {
vbox_close(vboxfs_conn);
return r;
}
vboxfs_root = vbox_get_u32(&param[1]);
/* Gather extra information about the mapped shared. */
if (vboxfs_query_vol("", &volinfo) == OK) {
*case_insens = !volinfo.props.casesens;
*read_only = !!volinfo.props.readonly;
}
*tablep = &vboxfs_table;
return OK;
}
/*
* Unmap the share, and disconnect from the VBOX driver.
*/
void
vboxfs_cleanup(void)
{
vbox_param_t param[1];
vbox_set_u32(&param[0], vboxfs_root);
vbox_call(vboxfs_conn, VBOXFS_CALL_UNMAP_FOLDER, param, 1, NULL);
vbox_close(vboxfs_conn);
}