diff options
Diffstat (limited to 'REORG.TODO/hurd/hurdchdir.c')
-rw-r--r-- | REORG.TODO/hurd/hurdchdir.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/REORG.TODO/hurd/hurdchdir.c b/REORG.TODO/hurd/hurdchdir.c new file mode 100644 index 0000000000..b38734d8f6 --- /dev/null +++ b/REORG.TODO/hurd/hurdchdir.c @@ -0,0 +1,59 @@ +/* Change a port cell to a directory by looking up a name. + Copyright (C) 1999-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <unistd.h> +#include <hurd.h> +#include <hurd/port.h> +#include <hurd/fd.h> +#include <fcntl.h> +#include <string.h> + +int +_hurd_change_directory_port_from_name (struct hurd_port *portcell, + const char *name) +{ + size_t len; + const char *lookup; + file_t dir; + + /* Append trailing "/." to directory name to force ENOTDIR if it's not a + directory and EACCES if we don't have search permission. */ + len = strlen (name); + if (len >= 2 && name[len - 2] == '/' && name[len - 1] == '.') + lookup = name; + else if (len == 0) + /* Special-case empty file name according to POSIX. */ + return __hurd_fail (ENOENT); + else + { + char *n = alloca (len + 3); + memcpy (n, name, len); + n[len] = '/'; + n[len + 1] = '.'; + n[len + 2] = '\0'; + lookup = n; + } + + dir = __file_name_lookup (lookup, 0, 0); + if (dir == MACH_PORT_NULL) + return -1; + + _hurd_port_set (portcell, dir); + return 0; +} |