/**
* PVFSIOStore::Symlink: create a symbolic link
*
* @param oldpath
* @param newpath
* @return PLFS_SUCCESS or PLFS_E* on error
*/
plfs_error_t PVFSIOStore::Symlink(const char* oldpath, const char* newpath) {
int nev, pev;
PVFS_object_ref ref;
PVFS_credentials creds;
char *node, *parent;
PVFS_sys_attr attr;
PVFS_sysresp_symlink resp;
/* need parent dir of newpath */
nev = pvfsios_get_node_and_parent(&this->fsid, newpath, &ref, &creds,
&node, &parent);
if (nev < 0) {
return errno_to_plfs_error(-nev);
}
attr.owner = creds.uid;
attr.group = creds.gid;
attr.perms = 0777;
attr.mask = PVFS_ATTR_SYS_ALL_SETABLE;
memset(&resp, 0, sizeof(resp));
pev = PVFS_sys_symlink(node, ref, (char *)oldpath, attr, &creds, &resp);
nev = get_err(pev);
free(parent);
return errno_to_plfs_error(-nev);
}
int main(int argc, char **argv)
{
int ret = -1;
char str_buf[256] = {0};
char *filename = (char *)0;
PVFS_fs_id cur_fs;
PVFS_sysresp_symlink resp_sym;
char* entry_name = NULL;
char *target = NULL;
PVFS_object_ref parent_refn;
PVFS_sys_attr attr;
PVFS_credentials credentials;
if (argc != 3)
{
fprintf(stderr,"Usage: %s filename target\n",argv[0]);
return ret;
}
filename = argv[1];
target = argv[2];
ret = PVFS_util_init_defaults();
if (ret < 0)
{
PVFS_perror("PVFS_util_init_defaults", ret);
return (-1);
}
ret = PVFS_util_get_default_fsid(&cur_fs);
if (ret < 0)
{
PVFS_perror("PVFS_util_get_default_fsid", ret);
return (-1);
}
if (PINT_remove_base_dir(filename,str_buf,256))
{
if (filename[0] != '/')
{
printf("You forgot the leading '/'\n");
}
printf("Cannot retrieve link name for creation on %s\n",
filename);
return(-1);
}
printf("Link to be created is %s\n",str_buf);
memset(&resp_sym, 0, sizeof(PVFS_sysresp_symlink));
PVFS_util_gen_credentials(&credentials);
entry_name = str_buf;
attr.mask = PVFS_ATTR_SYS_ALL_SETABLE;
attr.owner = credentials.uid;
attr.group = credentials.gid;
attr.perms = 1877;
attr.atime = attr.ctime = attr.mtime = time(NULL);
ret = PINT_lookup_parent(filename, cur_fs, &credentials,
&parent_refn.handle);
if(ret < 0)
{
PVFS_perror("PVFS_util_lookup_parent", ret);
return(-1);
}
parent_refn.fs_id = cur_fs;
ret = PVFS_sys_symlink(entry_name, parent_refn, target,
attr, &credentials, &resp_sym, NULL);
if (ret < 0)
{
printf("symlink failed with errcode = %d\n", ret);
return(-1);
}
printf("--symlink--\n");
printf("Handle: %lld\n", lld(resp_sym.ref.handle));
ret = PVFS_sys_finalize();
if (ret < 0)
{
printf("finalizing sysint failed with errcode = %d\n", ret);
return (-1);
}
return(0);
}
