minix3/lib/libvboxfs/path.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"
/*
* Store a local path name in the given path object, performing any necessary
* conversions. The path object is expected to be used read-only, so the size
* of the path object is set as small as possible. If 'name' is NULL, the path
* will be initialized to the empty string.
*/
int
vboxfs_set_path(vboxfs_path_t *path, char *name)
{
size_t len;
len = strlen(name);
/* FIXME: missing UTF-8 conversion */
if (len >= sizeof(path->data))
return ENAMETOOLONG;
strcpy(path->data, name);
path->len = len;
path->size = len + 1;
return OK;
}
/*
* Retrieve the path name from the given path object. Make sure the name fits
* in the given name buffer first. The given size must include room for a
* terminating null character.
*/
int
vboxfs_get_path(vboxfs_path_t *path, char *name, size_t size)
{
/* FIXME: missing UTF-8 conversion */
if (path->len >= size)
return ENAMETOOLONG;
assert(path->data[path->len] == 0);
strcpy(name, path->data);
return OK;
}
/*
* Return the byte size of a previously initialized path object.
*/
size_t
vboxfs_get_path_size(vboxfs_path_t *path)
{
return offsetof(vboxfs_path_t, data) + path->size;
}