diff options
Diffstat (limited to 'libmount/python')
| -rw-r--r-- | libmount/python/Makemodule.am | 35 | ||||
| -rw-r--r-- | libmount/python/__init__.py | 2 | ||||
| -rw-r--r-- | libmount/python/context.c | 1228 | ||||
| -rw-r--r-- | libmount/python/fs.c | 883 | ||||
| -rw-r--r-- | libmount/python/pylibmount.c | 323 | ||||
| -rw-r--r-- | libmount/python/pylibmount.h | 131 | ||||
| -rw-r--r-- | libmount/python/tab.c | 783 | ||||
| -rwxr-xr-x | libmount/python/test_mount_context.py | 173 | ||||
| -rwxr-xr-x | libmount/python/test_mount_tab.py | 164 | ||||
| -rwxr-xr-x | libmount/python/test_mount_tab_update.py | 59 |
10 files changed, 3781 insertions, 0 deletions
diff --git a/libmount/python/Makemodule.am b/libmount/python/Makemodule.am new file mode 100644 index 0000000..b338ea0 --- /dev/null +++ b/libmount/python/Makemodule.am @@ -0,0 +1,35 @@ +if BUILD_PYLIBMOUNT + +pylibmountexecdir = $(pyexecdir)/libmount + +# Please, don't use $pythondir for the scripts. We have to use the same +# directory for binary stuff as well as for the scripts otherwise it's +# not possible to install 32-bit and 64-bit version on the same system. +pylibmountexec_LTLIBRARIES = pylibmount.la +pylibmountexec_PYTHON = libmount/python/__init__.py + +pylibmount_la_SOURCES = \ + libmount/python/pylibmount.c \ + libmount/python/pylibmount.h \ + libmount/python/fs.c \ + libmount/python/tab.c +if LINUX +pylibmount_la_SOURCES += libmount/python/context.c +endif + +pylibmount_la_LIBADD = libmount.la $(PYTHON_LIBS) + +pylibmount_la_CFLAGS = \ + $(AM_CFLAGS) \ + $(PYTHON_CFLAGS) $(PYTHON_WARN_CFLAGS) \ + -I$(ul_libmount_incdir) \ + -fno-strict-aliasing #-ggdb3 -O0 + +pylibmount_la_LDFLAGS = \ + -avoid-version -module -shared -export-dynamic + +dist_check_SCRIPTS += libmount/python/test_mount_context.py +dist_check_SCRIPTS += libmount/python/test_mount_tab.py +dist_check_SCRIPTS += libmount/python/test_mount_tab_update.py + +endif # BUILD_PYLIBMOUNT diff --git a/libmount/python/__init__.py b/libmount/python/__init__.py new file mode 100644 index 0000000..09104e2 --- /dev/null +++ b/libmount/python/__init__.py @@ -0,0 +1,2 @@ +from .pylibmount import * + diff --git a/libmount/python/context.c b/libmount/python/context.c new file mode 100644 index 0000000..6e3ffcb --- /dev/null +++ b/libmount/python/context.c @@ -0,0 +1,1228 @@ +/* + * Python bindings for the libmount library. + * + * Copyright (C) 2013, Red Hat, Inc. All rights reserved. + * Written by Ondrej Oprala and Karel Zak + * + * This file 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 3 of the License, or (at your option) any later version. + * + * This file 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 this file; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#include "pylibmount.h" + +static PyMemberDef Context_members[] = { + { NULL } +}; + +static PyObject *Context_set_tables_errcb(ContextObjext *self, PyObject *func, + void *closure __attribute__((unused))) +{ + if (!func) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return NULL; + } + + if (!PyCallable_Check(func)) + return NULL; + + PyObject *tmp = self->table_errcb; + Py_INCREF(func); + self->table_errcb = func; + Py_XDECREF(tmp); + + return UL_IncRef(self); +} + +static void Context_dealloc(ContextObjext *self) +{ + if (!self->cxt) /* if init fails */ + return; + + Py_XDECREF(mnt_context_get_fs_userdata(self->cxt)); + Py_XDECREF(mnt_context_get_fstab_userdata(self->cxt)); + Py_XDECREF(mnt_context_get_mtab_userdata(self->cxt)); + + mnt_free_context(self->cxt); + PyFree(self); +} + +static PyObject *Context_new(PyTypeObject *type, + PyObject *args __attribute__((unused)), + PyObject *kwds __attribute__((unused))) +{ + ContextObjext *self = (ContextObjext*) type->tp_alloc(type, 0); + + if (self) { + self->cxt = NULL; + self->table_errcb = NULL; + } + + return (PyObject *)self; +} + +/* + * Note there is no pointer to encapsulating object needed here, since Cxt is + * on top of the Context(Table(Filesystem)) hierarchy + */ +#define Context_HELP "Context(source=None, target=None, fstype=None, " \ + "options=None, mflags=0, fstype_pattern=None, " \ + "options_pattern=None, fs=None, fstab=None, optsmode=0)" +static int Context_init(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + char *source = NULL, *target = NULL, *fstype = NULL; + char *options = NULL, *fstype_pattern = NULL, *options_pattern = NULL; + unsigned long mflags = 0; + int optsmode = 0, syscall_status = 1; + FsObject *fs = NULL; + TableObject *fstab = NULL; + int rc = 0; + char *kwlist[] = { + "source", "target", "fstype", + "options", "mflags", "fstype_pattern", + "options_pattern", "fs", "fstab", + "optsmode", NULL + }; + + if (!PyArg_ParseTupleAndKeywords( + args, kwds, "|sssskssO!O!i", kwlist, + &source, &target, &fstype, &options, &mflags, + &fstype_pattern, &options_pattern, &FsType, &fs, + &TableType, &fstab, &optsmode, &syscall_status)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return -1; + } + + if (self->cxt) + mnt_free_context(self->cxt); + + self->cxt = mnt_new_context(); + if (!self->cxt) { + PyErr_SetString(PyExc_MemoryError, MEMORY_ERR); + return -1; + } + + if (source && (rc = mnt_context_set_source(self->cxt, source))) { + UL_RaiseExc(-rc); + return -1; + } + + if (target && (rc = mnt_context_set_target(self->cxt, target))) { + UL_RaiseExc(-rc); + return -1; + } + + if (fstype && (rc = mnt_context_set_fstype(self->cxt, fstype))) { + UL_RaiseExc(-rc); + return -1; + } + + if (options && (rc = mnt_context_set_options(self->cxt, options))) { + UL_RaiseExc(-rc); + return -1; + } + + if (fstype_pattern && (rc = mnt_context_set_fstype_pattern(self->cxt, fstype_pattern))) { + UL_RaiseExc(-rc); + return -1; + } + + if (options_pattern && (rc = mnt_context_set_options_pattern(self->cxt, options_pattern))) { + UL_RaiseExc(-rc); + return -1; + } + + if (fs && (rc = mnt_context_set_fs(self->cxt, fs->fs))) { + UL_RaiseExc(-rc); + return -1; + } + + if (fstab && (rc = mnt_context_set_fstab(self->cxt, fstab->tab))) { + UL_RaiseExc(-rc); + return -1; + } + + if (optsmode && (rc = mnt_context_set_optsmode(self->cxt, optsmode))) { + UL_RaiseExc(-rc); + return -1; + } + + mnt_context_set_mflags(self->cxt, mflags); + mnt_context_set_optsmode(self->cxt, optsmode); + mnt_context_set_tables_errcb(self->cxt, pymnt_table_parser_errcb); + + return 0; +} + +#define Context_enable_fake_HELP "enable_fake(enable)\n\n" \ + "Enable/disable fake mounting (see mount(8) man page, option -f).\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_enable_fake(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int enable; + char *kwlist[] = { "enable", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &enable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_enable_fake(self->cxt, enable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_enable_force_HELP "enable_force(enable)\n\n" \ + "Enable/disable force umounting (see umount(8) man page, option -f).\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_enable_force(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int enable; + char *kwlist[] = { "enable", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &enable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_enable_force(self->cxt, enable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_enable_lazy_HELP "enable_lazy(enable)\n\n" \ + "Enable/disable lazy umount (see umount(8) man page, option -l).\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_enable_lazy(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int enable; + char *kwlist[] = { "enable", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &enable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_enable_lazy(self->cxt, enable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_enable_loopdel_HELP "enable_loopdel(enable)\n\n" \ + "Enable/disable loop delete (destroy) after umount (see umount(8), option -d)\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_enable_loopdel(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int enable; + char *kwlist[] = { "enable", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &enable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_enable_loopdel(self->cxt, enable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_enable_rdonly_umount_HELP "enable_rdonly_umount(enable)\n\n" \ + "Enable/disable read-only remount on failed umount(2)\n "\ + "(see umount(8) man page, option -r).\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_enable_rdonly_umount(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int enable; + char *kwlist[] = { "enable", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &enable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_enable_rdonly_umount(self->cxt, enable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_enable_sloppy_HELP "enable_sloppy(enable)\n\n" \ + "Set/unset sloppy mounting (see mount(8) man page, option -s).\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_enable_sloppy(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int enable; + char *kwlist[] = { "enable", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &enable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_enable_sloppy(self->cxt, enable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_enable_verbose_HELP "enable_verbose(enable)\n\n" \ + "Enable/disable verbose output (TODO: not implemented yet)\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_enable_verbose(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int enable; + char *kwlist[] = { "enable", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &enable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_enable_verbose(self->cxt, enable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_enable_fork_HELP "enable_fork(enable)\n\n" \ + "Enable/disable fork(2) call in Cxt.next_mount()(not yet implemented) (see mount(8) man\n" \ + "page, option -F).\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_enable_fork(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int enable; + char *kwlist[] = {"enable", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &enable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_enable_fork(self->cxt, enable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_disable_canonicalize_HELP "disable_canonicalize(disable)\n\n" \ + "Enable/disable paths canonicalization and tags evaluation. The libmount context\n" \ + "canonicalizes paths when searching fstab and when preparing source and target paths\n" \ + "for mount(2) syscall.\n" \ + "\n" \ + "This function has effect to the private (within context) fstab instance only\n" \ + "(see Cxt.fstab).\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_disable_canonicalize(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int disable; + char *kwlist[] = {"disable", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &disable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_disable_canonicalize(self->cxt, disable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_disable_helpers_HELP "disable_helpers(disable)\n\n" \ + "Enable/disable /sbin/[u]mount.* helpers (see mount(8) man page, option -i).\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_disable_helpers(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int disable; + char *kwlist[] = {"disable", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &disable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_disable_helpers(self->cxt, disable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_disable_mtab_HELP "disable_mtab(disable)\n\n" \ + "Disable/enable mtab update (see mount(8) man page, option -n).\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_disable_mtab(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int disable; + char *kwlist[] = {"disable", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &disable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_disable_mtab(self->cxt, disable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_disable_swapmatch_HELP "disable_swapmatch(disable)\n\n" \ + "Disable/enable swap between source and target for mount(8) if only one path\n" \ + "is specified.\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_disable_swapmatch(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int disable; + char *kwlist[] = { "disable", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &disable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_context_disable_swapmatch(self->cxt, disable); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +static int Context_set_source(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + char *source; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(source = pystos(value))) + return -1; + + rc = mnt_context_set_source(self->cxt, source); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static int Context_set_mountdata(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + char *mountdata; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(mountdata = pystos(value))) + return -1; + + rc = mnt_context_set_mountdata(self->cxt, mountdata); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static int Context_set_target(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + char * target; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(target = pystos(value))) + return -1; + + rc = mnt_context_set_target(self->cxt, target); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static int Context_set_fstype(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + char * fstype; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(fstype = pystos(value))) + return -1; + + rc = mnt_context_set_fstype(self->cxt, fstype); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static int Context_set_options(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + char * options; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(options = pystos(value))) + return -1; + + rc = mnt_context_set_options(self->cxt, options); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static int Context_set_fstype_pattern(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + char * fstype_pattern; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(fstype_pattern = pystos(value))) + return -1; + + rc = mnt_context_set_fstype_pattern(self->cxt, fstype_pattern); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static int Context_set_options_pattern(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + char * options_pattern; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(options_pattern = pystos(value))) + return -1; + + rc = mnt_context_set_options_pattern(self->cxt, options_pattern); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static int Context_set_fs(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + FsObject *fs; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!PyArg_Parse(value, "O!", &FsType, &fs)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return -1; + } + Py_INCREF(fs); + Py_XDECREF(mnt_context_get_fs_userdata(self->cxt)); + + return mnt_context_set_fs(self->cxt, fs->fs); +} + +static int Context_set_fstab(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + TableObject *fstab; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!PyArg_Parse(value, "O!", &TableType, &fstab)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return -1; + } + Py_INCREF(fstab); + Py_XDECREF(mnt_context_get_fstab_userdata(self->cxt)); + + return mnt_context_set_fstab(self->cxt, fstab->tab); +} + +static int Context_set_optsmode(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + int optsmode; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!PyLong_Check(value)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return -1; + } + optsmode = PyLong_AsLong(value); + return mnt_context_set_optsmode(self->cxt, optsmode); +} + +static int Context_set_syscall_status(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + int syscall_status; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!PyLong_Check(value)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return -1; + } + syscall_status = PyLong_AsLong(value); + return mnt_context_set_syscall_status(self->cxt, syscall_status); +} + +static int Context_set_user_mflags(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + unsigned long flags; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!PyLong_Check(value)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return -1; + } + flags = PyLong_AsUnsignedLong(value); + return mnt_context_set_mflags(self->cxt, flags); + +} + +static int Context_set_mflags(ContextObjext *self, PyObject *value, void *closure __attribute__((unused))) +{ + unsigned long flags; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!PyLong_Check(value)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return -1; + } + flags = PyLong_AsUnsignedLong(value); + return mnt_context_set_mflags(self->cxt, flags); +} + +/* returns a flags integer (behavior differs from C API) */ +static PyObject *Context_get_mflags(ContextObjext *self) +{ + unsigned long flags; + + PyObject *result; + mnt_context_get_mflags(self->cxt, &flags); + result = Py_BuildValue("k", flags); + + if (!result) + PyErr_SetString(PyExc_RuntimeError, CONSTRUCT_ERR); + return result; + +} +/* returns a flags integer (behavior differs from C API) */ +static PyObject *Context_get_user_mflags(ContextObjext *self) +{ + unsigned long flags; + + PyObject *result; + mnt_context_get_user_mflags(self->cxt, &flags); + result = Py_BuildValue("k", flags); + + if (!result) + PyErr_SetString(PyExc_RuntimeError, CONSTRUCT_ERR); + return result; + +} +#define Context_reset_status_HELP "reset_status()\n\n" \ + "Resets mount(2) and mount.type statuses, so Cxt.do_mount() or\n" \ + "Cxt.do_umount() could be again called with the same settings.\n" \ + "\n" \ + "BE CAREFUL -- after this soft reset the libmount will NOT parse mount\n" \ + "options, evaluate permissions or apply stuff from fstab.\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_reset_status(ContextObjext *self) +{ + int rc = mnt_context_reset_status(self->cxt); + + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_is_fake_HELP "is_fake()\n\n" \ +"Returns True if fake flag is enabled or False" +static PyObject *Context_is_fake(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_fake(self->cxt)); +} + +#define Context_is_force_HELP "is_force()\n\n" \ +"Returns True if force umounting flag is enabled or False" +static PyObject *Context_is_force(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_force(self->cxt)); +} + +#define Context_is_lazy_HELP "is_lazy()\n\n" \ +"Returns True if lazy umount is enabled or False" +static PyObject *Context_is_lazy(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_lazy(self->cxt)); +} + +#define Context_is_nomtab_HELP "is_nomtab()\n\n" \ + "Returns True if no-mtab is enabled or False" +static PyObject *Context_is_nomtab(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_nomtab(self->cxt)); +} + +#define Context_is_rdonly_umount_HELP "is_rdonly_umount()\n\n" \ + "Enable/disable read-only remount on failed umount(2)\n" \ + "(see umount(8) man page, option -r).\n" \ + "\n" \ + "Returns self on success, raises an exception in case of error." +static PyObject *Context_is_rdonly_umount(ContextObjext *self) +{ + int rc = mnt_context_is_rdonly_umount(self->cxt); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_is_restricted_HELP "is_restricted()\n\n" \ + "Returns False for unrestricted mount (user is root), or True for non-root mounts" +static PyObject *Context_is_restricted(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_restricted(self->cxt)); +} + +#define Context_is_sloppy_HELP "is_sloppy()\n\n" \ + "Returns True if sloppy flag is enabled or False" +static PyObject *Context_is_sloppy(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_sloppy(self->cxt)); +} + +#define Context_is_verbose_HELP "is_verbose()\n\n" \ + "Returns True if verbose flag is enabled or False" +static PyObject *Context_is_verbose(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_verbose(self->cxt)); +} +#define Context_is_fs_mounted_HELP "is_fs_mounted(fs, mounted)\n\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_is_fs_mounted(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"fs", "mounted", NULL}; + FsObject *fs; + int mounted; + + if (PyArg_ParseTupleAndKeywords(args, kwds, "O!i", kwlist, + &FsType, &fs, &mounted)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyBool_FromLong(mnt_context_is_fs_mounted(self->cxt, fs->fs, &mounted)); +} + +#define Context_is_child_HELP "is_child()\n\n" \ + "Returns True if mount -F enabled and the current context is child, or False" +static PyObject *Context_is_child(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_child(self->cxt)); +} + +#define Context_is_fork_HELP "is_fork()\n\n" \ + "Returns True if fork (mount -F) is enabled or False" +static PyObject *Context_is_fork(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_fork(self->cxt)); +} + +#define Context_is_parent_HELP "is_parent()\n\n" \ + "Returns True if mount -F enabled and the current context is parent, or False" +static PyObject *Context_is_parent(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_parent(self->cxt)); +} + +#define Context_is_loopdel_HELP "is_loopdel()\n\n" \ + "Returns True if loop device should be deleted after umount (umount -d) or False." +static PyObject *Context_is_loopdel(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_loopdel(self->cxt)); +} + +#define Context_is_nocanonicalize_HELP "is_nocanonicalize()\n\n" \ + "Returns True if no-canonicalize mode enabled or False." +static PyObject *Context_is_nocanonicalize(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_nocanonicalize(self->cxt)); +} + +#define Context_is_nohelpers_HELP "is_nohelpers()\n\n" \ + "Returns True if helpers are disabled (mount -i) or False." +static PyObject *Context_is_nohelpers(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_nohelpers(self->cxt)); +} + +#define Context_syscall_called_HELP "syscall_called()\n\n" \ + "Returns True if mount(2) syscall has been called, or False." +static PyObject *Context_syscall_called(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_syscall_called(self->cxt)); +} + +#define Context_is_swapmatch_HELP "is_swapmatch()\n\n" \ + "Returns True if swap between source and target is allowed (default is True) or False." +static PyObject *Context_is_swapmatch(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_is_swapmatch(self->cxt)); +} + +#define Context_tab_applied_HELP "tab_applied()\n\n" \ + "Returns True if fstab (or mtab) has been applied to the context, False otherwise." +static PyObject *Context_tab_applied(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_tab_applied(self->cxt)); +} + +#define Context_apply_fstab_HELP "apply_fstab()\n\n" \ + "This function is optional.\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_apply_fstab(ContextObjext *self) +{ + int rc = mnt_context_apply_fstab(self->cxt); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_helper_executed_HELP "helper_executed()\n\n" \ + "Returns True if mount.type helper has been executed, or False." +static PyObject *Context_helper_executed(ContextObjext *self) +{ + return PyBool_FromLong(mnt_context_helper_executed(self->cxt)); +} + +static PyObject *Context_get_source(ContextObjext *self) +{ + return PyObjectResultStr(mnt_context_get_source(self->cxt)); +} + +static PyObject *Context_get_target(ContextObjext *self) +{ + return PyObjectResultStr(mnt_context_get_target(self->cxt)); +} + +static PyObject *Context_get_options(ContextObjext *self) +{ + return PyObjectResultStr(mnt_context_get_options(self->cxt)); +} + +static PyObject *Context_get_fstype(ContextObjext *self) +{ + return PyObjectResultStr(mnt_context_get_fstype(self->cxt)); +} + +static PyObject *Context_get_fs(ContextObjext *self) +{ + return PyObjectResultFs(mnt_context_get_fs(self->cxt)); +} + +static PyObject *Context_get_fstab(ContextObjext *self) +{ + struct libmnt_table *tab = NULL; + + if (mnt_context_get_fstab(self->cxt, &tab) != 0 || !tab) + return NULL; + return PyObjectResultTab(tab); +} + +static PyObject *Context_get_mtab(ContextObjext *self) +{ + struct libmnt_table *tab = NULL; + + if (mnt_context_get_mtab(self->cxt, &tab) != 0 || !tab) + return NULL; + return PyObjectResultTab(tab); +} + +static PyObject *Context_get_optsmode(ContextObjext *self) +{ + return PyObjectResultInt(mnt_context_get_optsmode(self->cxt)); +} + +static PyObject *Context_get_status(ContextObjext *self) +{ + return PyObjectResultInt(mnt_context_get_status(self->cxt)); +} + +static PyObject *Context_get_syscall_errno(ContextObjext *self) +{ + return PyObjectResultInt(mnt_context_get_syscall_errno(self->cxt)); +} + +#define Context_do_mount_HELP "do_mount()\n\n" \ + "Call mount(2) or mount.type helper. Unnecessary for Cxt.mount().\n" \ + "\n" \ + "Note that this function could be called only once. If you want to mount\n" \ + "another source or target than you have to call Cxt.reset_context().\n" \ + "\n" \ + "If you want to call mount(2) for the same source and target with a different\n" \ + "mount flags or fstype then call Cxt.reset_status() and then try\n" \ + "again Cxt.do_mount().\n" \ + "\n" \ + "WARNING: non-zero return code does not mean that mount(2) syscall or\n" \ + "mount.type helper wasn't successfully called.\n" \ + "\n" \ + "Check Cxt.status after error!\n" \ + "\n" \ + "Returns self on success or an exception in case of other errors." +static PyObject *Context_do_mount(ContextObjext *self) +{ + int rc = mnt_context_do_mount(self->cxt); + return rc ? UL_RaiseExc(rc < 0 ? -rc : rc) : UL_IncRef(self); +} + +#define Context_do_umount_HELP "do_umount()\n\n" \ + "Umount filesystem by umount(2) or fork()+exec(/sbin/umount.type).\n" \ + "Unnecessary for Cxt.umount().\n" \ + "\n" \ + "See also Cxt.disable_helpers().\n" \ + "\n" \ + "WARNING: non-zero return code does not mean that umount(2) syscall or\n" \ + "umount.type helper wasn't successfully called.\n" \ + "\n" \ + "Check Cxt.status after error!\n" \ + "\n" \ + "Returns self on success or an exception in case of other errors." +static PyObject *Context_do_umount(ContextObjext *self) +{ + int rc = mnt_context_do_umount(self->cxt); + return rc ? UL_RaiseExc(rc < 0 ? -rc : rc) : UL_IncRef(self); +} + +#define Context_mount_HELP "mount()\n\n" \ + "High-level, mounts filesystem by mount(2) or fork()+exec(/sbin/mount.type).\n" \ + "\n" \ + "This is similar to:\n" \ + "\n" \ + "Cxt.prepare_mount();\n" \ + "Cxt.do_mount();\n" \ + "Cxt.finalize_mount();\n" \ + "\n" \ + "See also Cxt.disable_helper().\n" \ + "\n" \ + "Note that this function could be called only once. If you want to mount with\n" \ + "different setting than you have to call Cxt.reset_context(). It's NOT enough\n" \ + "to call Cxt.reset_status() if you want call this function more than\n" \ + "once, whole context has to be reset.\n" \ + "\n" \ + "WARNING: non-zero return code does not mean that mount(2) syscall or\n" \ + "mount.type helper wasn't successfully called.\n" \ + "\n" \ + "Check Cxt.status after error!\n" \ + "\n" \ + "Returns self on success or an exception in case of other errors." +static PyObject *Context_mount(ContextObjext *self) +{ + int rc = mnt_context_mount(self->cxt); + return rc ? UL_RaiseExc(rc < 0 ? -rc : rc) : UL_IncRef(self); +} + +#define Context_umount_HELP "umount()\n\n" \ + "High-level, umounts filesystem by umount(2) or fork()+exec(/sbin/umount.type).\n" \ + "\n" \ + "This is similar to:\n" \ + "\n" \ + "Cxt.prepare_umount();\n" \ + "Cxt.do_umount();\n" \ + "Cxt.finalize_umount();\n" \ + "\n" \ + "See also Cxt.disable_helpers().\n" \ + "\n" \ + "WARNING: non-zero return code does not mean that umount(2) syscall or\n" \ + "umount.type helper wasn't successfully called.\n" \ + "\n" \ + "Check Cxt.status after error!\n" \ + "\n" \ + "Returns self on success or an exception in case of other errors." +static PyObject *Context_umount(ContextObjext *self) +{ + int rc = mnt_context_umount(self->cxt); + return rc ? UL_RaiseExc(rc < 0 ? -rc : rc) : UL_IncRef(self); +} + +#define Context_finalize_mount_HELP "finalize_mount()\n\n" \ + "Mtab update, etc. Unnecessary for Cxt.mount(), but should be called\n" \ + "after Cxt.do_mount(). See also Cxt.syscall_status.\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_finalize_mount(ContextObjext *self) +{ + int rc = mnt_context_finalize_mount(self->cxt); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_prepare_umount_HELP "prepare_umount()\n\n" \ + "Prepare context for umounting, unnecessary for Cxt.umount().\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_prepare_umount(ContextObjext *self) +{ + int rc = mnt_context_prepare_umount(self->cxt); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_prepare_mount_HELP "prepare_mount()\n\n" \ + "Prepare context for mounting, unnecessary for Cxt.mount().\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_prepare_mount(ContextObjext *self) +{ + int rc = mnt_context_prepare_mount(self->cxt); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_finalize_umount_HELP "finalize_umount()\n\n" \ + "Mtab update, etc. Unnecessary for Cxt.umount(), but should be called\n" \ + "after Cxt.do_umount(). See also Cxt.syscall_status.\n" \ + "\n" \ + "Returns self on success, raises LibmountError if target filesystem not found, or other exception on error." +static PyObject *Context_finalize_umount(ContextObjext *self) +{ + int rc = mnt_context_finalize_umount(self->cxt); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_find_umount_fs_HELP "find_umount_fs(tgt, pfs)\n\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_find_umount_fs(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + char *kwlist[] = { "tgt", "pfs", NULL }; + char *tgt = NULL; + FsObject *fs; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "sO!", kwlist, &tgt, &FsType, &fs)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + + rc = mnt_context_find_umount_fs(self->cxt, tgt, &fs->fs); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_append_options_HELP "append_options(optstr)\n\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_append_options(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + char *kwlist[] = {"optstr", NULL}; + char *optstr = NULL; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &optstr)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + + rc = mnt_context_append_options(self->cxt, optstr); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_helper_setopt_HELP "helper_setopt(c, arg)\n\n" \ + "This function applies [u]mount.type command line option (for example parsed\n" \ + "by getopt or getopt_long) to cxt. All unknown options are ignored and\n" \ + "then ValueError is raised.\n" \ + "\n" \ + "Returns self on success, raises ValueError if c is unknown or other exception in case of an error." +static PyObject *Context_helper_setopt(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int c; + char *arg; + char *kwlist[] = { "c", "arg", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "is", kwlist, &c, &arg)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + + rc = mnt_context_helper_setopt(self->cxt, c, arg); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Context_init_helper_HELP "init_helper(action, flags)\n\n" \ + "This function informs libmount that it is used from [u]mount.type helper.\n" \ + "\n" \ + "The function also calls Cxt.disable_helpers() to avoid calling\n" \ + "mount.type helpers recursively. If you really want to call another\n" \ + "mount.type helper from your helper then you have to explicitly enable this\n" \ + "feature by:\n" \ + "\n" \ + "Cxt.disable_helpers(False);\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Context_init_helper(ContextObjext *self, PyObject *args, PyObject *kwds) +{ + int rc; + int action, flags; + char *kwlist[] = {"action", "flags", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "ii", kwlist, &action, &flags)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + + rc = mnt_context_init_helper(self->cxt, action, flags); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +static PyGetSetDef Context_getseters[] = { + {"tables_errcb", NULL, (setter)Context_set_tables_errcb, "error callback function", NULL}, + {"status", (getter)Context_get_status, NULL, "status", NULL}, + {"source", (getter)Context_get_source, (setter)Context_set_source, "source", NULL}, + {"target", (getter)Context_get_target, (setter)Context_set_target, "target", NULL}, + {"fstype", (getter)Context_get_fstype, (setter)Context_set_fstype, "fstype", NULL}, + {"options", (getter)Context_get_options, (setter)Context_set_options, "options", NULL}, + {"mflags", (getter)Context_get_mflags, (setter)Context_set_mflags, "mflags", NULL}, + {"mountdata", NULL, (setter)Context_set_mountdata, "mountdata", NULL}, + {"fstype_pattern", NULL, (setter)Context_set_fstype_pattern, "fstype_pattern", NULL}, + {"options_pattern", NULL, (setter)Context_set_options_pattern, "options_pattern", NULL}, + {"fs", (getter)Context_get_fs, (setter)Context_set_fs, "filesystem description (type, mountpoint, device, ...)", NULL}, + {"mtab", (getter)Context_get_mtab, NULL, "mtab entries", NULL}, + {"fstab", (getter)Context_get_fstab, (setter)Context_set_fstab, "fstab (or mtab for some remounts)", NULL}, + {"optsmode", (getter)Context_get_optsmode, (setter)Context_set_optsmode, "fstab optstr mode MNT_OPTSMODE_{AUTO,FORCE,IGNORE}", NULL}, + {"syscall_errno", (getter)Context_get_syscall_errno, (setter)Context_set_syscall_status, "1: not_called yet, 0: success, <0: -errno", NULL}, + {"user_mflags", (getter)Context_get_user_mflags, (setter)Context_set_user_mflags, "user mflags", NULL}, + {NULL} +}; +static PyMethodDef Context_methods[] = { + {"find_umount_fs", (PyCFunction)Context_find_umount_fs, METH_VARARGS|METH_KEYWORDS, Context_find_umount_fs_HELP}, + {"reset_status", (PyCFunction)Context_reset_status, METH_NOARGS, Context_reset_status_HELP}, + {"helper_executed", (PyCFunction)Context_helper_executed, METH_NOARGS, Context_helper_executed_HELP}, + {"init_helper", (PyCFunction)Context_init_helper, METH_VARARGS|METH_KEYWORDS, Context_init_helper_HELP}, + {"helper_setopt", (PyCFunction)Context_helper_setopt, METH_VARARGS|METH_KEYWORDS, Context_helper_setopt_HELP}, + {"append_options", (PyCFunction)Context_append_options, METH_VARARGS|METH_KEYWORDS, Context_append_options_HELP}, + {"apply_fstab", (PyCFunction)Context_apply_fstab, METH_NOARGS, Context_apply_fstab_HELP}, + {"disable_canonicalize", (PyCFunction)Context_disable_canonicalize, METH_VARARGS|METH_KEYWORDS, Context_disable_canonicalize_HELP}, + {"disable_helpers", (PyCFunction)Context_disable_helpers, METH_VARARGS|METH_KEYWORDS, Context_disable_helpers_HELP}, + {"disable_mtab", (PyCFunction)Context_disable_mtab, METH_VARARGS|METH_KEYWORDS, Context_disable_mtab_HELP}, + {"do_mount", (PyCFunction)Context_do_mount, METH_NOARGS, Context_do_mount_HELP}, + {"do_umount", (PyCFunction)Context_do_umount, METH_NOARGS , Context_do_umount_HELP}, + {"enable_fake", (PyCFunction)Context_enable_fake, METH_VARARGS|METH_KEYWORDS, Context_enable_fake_HELP}, + {"enable_force", (PyCFunction)Context_enable_force, METH_VARARGS|METH_KEYWORDS, Context_enable_force_HELP}, + {"enable_lazy", (PyCFunction)Context_enable_lazy, METH_VARARGS|METH_KEYWORDS, Context_enable_lazy_HELP}, + {"enable_loopdel", (PyCFunction)Context_enable_loopdel, METH_VARARGS|METH_KEYWORDS, Context_enable_loopdel_HELP}, + {"enable_rdonly_umount", (PyCFunction)Context_enable_rdonly_umount, METH_VARARGS|METH_KEYWORDS, Context_enable_rdonly_umount_HELP}, + {"enable_sloppy", (PyCFunction)Context_enable_sloppy, METH_VARARGS|METH_KEYWORDS, Context_enable_sloppy_HELP}, + {"enable_verbose", (PyCFunction)Context_enable_verbose, METH_VARARGS|METH_KEYWORDS, Context_enable_verbose_HELP}, + {"enable_fork", (PyCFunction)Context_enable_fork, METH_VARARGS|METH_KEYWORDS, Context_enable_fork_HELP}, + {"finalize_mount", (PyCFunction)Context_finalize_mount, METH_NOARGS, Context_finalize_mount_HELP}, + {"finalize_umount", (PyCFunction)Context_finalize_umount, METH_NOARGS, Context_finalize_umount_HELP}, + {"is_fake", (PyCFunction)Context_is_fake, METH_NOARGS, Context_is_fake_HELP}, + {"is_force", (PyCFunction)Context_is_force, METH_NOARGS, Context_is_force_HELP}, + {"is_fork", (PyCFunction)Context_is_fork, METH_NOARGS, Context_is_fork_HELP}, + {"is_fs_mounted", (PyCFunction)Context_is_fs_mounted, METH_VARARGS|METH_KEYWORDS, Context_is_fs_mounted_HELP}, + {"is_lazy", (PyCFunction)Context_is_lazy, METH_NOARGS, Context_is_lazy_HELP}, + {"is_nomtab", (PyCFunction)Context_is_nomtab, METH_NOARGS, Context_is_nomtab_HELP}, + {"is_rdonly_umount", (PyCFunction)Context_is_rdonly_umount, METH_NOARGS, Context_is_rdonly_umount_HELP}, + {"is_restricted", (PyCFunction)Context_is_restricted, METH_NOARGS, Context_is_restricted_HELP}, + {"is_sloppy", (PyCFunction)Context_is_sloppy, METH_NOARGS, Context_is_sloppy_HELP}, + {"is_verbose", (PyCFunction)Context_is_verbose, METH_NOARGS, Context_is_verbose_HELP}, + {"is_child", (PyCFunction)Context_is_child, METH_NOARGS, Context_is_child_HELP}, + {"is_parent", (PyCFunction)Context_is_parent, METH_NOARGS, Context_is_parent_HELP}, + {"is_loopdel", (PyCFunction)Context_is_loopdel, METH_NOARGS, Context_is_loopdel_HELP}, + {"is_nocanonicalize", (PyCFunction)Context_is_nocanonicalize, METH_NOARGS, Context_is_nocanonicalize_HELP}, + {"is_nohelpers", (PyCFunction)Context_is_nohelpers, METH_NOARGS, Context_is_nohelpers_HELP}, + {"is_swapmatch", (PyCFunction)Context_is_swapmatch, METH_NOARGS, Context_is_swapmatch_HELP}, + {"mount", (PyCFunction)Context_mount, METH_NOARGS, Context_mount_HELP}, + {"prepare_mount", (PyCFunction)Context_prepare_mount, METH_NOARGS, Context_prepare_mount_HELP}, + {"prepare_umount", (PyCFunction)Context_prepare_umount, METH_NOARGS, Context_prepare_umount_HELP}, + {"umount", (PyCFunction)Context_umount, METH_NOARGS, Context_umount_HELP}, + {"syscall_called", (PyCFunction)Context_syscall_called, METH_NOARGS, Context_syscall_called_HELP}, + {"disable_swapmatch", (PyCFunction)Context_disable_swapmatch, METH_VARARGS|METH_KEYWORDS, Context_disable_swapmatch_HELP}, + {"tab_applied", (PyCFunction)Context_tab_applied, METH_NOARGS, Context_tab_applied_HELP}, + {NULL} +}; + +static PyObject *Context_repr(ContextObjext *self) +{ + return PyUnicode_FromFormat("<libmount.Context object at %p, restricted=%s>", + self, mnt_context_is_restricted(self->cxt) ? "True" : "False"); +} + +PyTypeObject ContextType = { + PyVarObject_HEAD_INIT(NULL, 0) + "libmount.Context", /*tp_name*/ + sizeof(ContextObjext), /*tp_basicsize*/ + 0, /*tp_itemsize*/ + (destructor)Context_dealloc, /*tp_dealloc*/ + NULL, /*tp_print*/ + NULL, /*tp_getattr*/ + NULL, /*tp_setattr*/ + NULL, /*tp_compare*/ + (reprfunc) Context_repr, + NULL, /*tp_as_number*/ + NULL, /*tp_as_sequence*/ + NULL, /*tp_as_mapping*/ + NULL, /*tp_hash */ + NULL, /*tp_call*/ + NULL, /*tp_str*/ + NULL, /*tp_getattro*/ + NULL, /*tp_setattro*/ + NULL, /*tp_as_buffer*/ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ + Context_HELP, /* tp_doc */ + NULL, /* tp_traverse */ + NULL, /* tp_clear */ + NULL, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + NULL, /* tp_iter */ + NULL, /* tp_iternext */ + Context_methods, /* tp_methods */ + Context_members, /* tp_members */ + Context_getseters, /* tp_getset */ + NULL, /* tp_base */ + NULL, /* tp_dict */ + NULL, /* tp_descr_get */ + NULL, /* tp_descr_set */ + 0, /* tp_dictoffset */ + (initproc)Context_init, /* tp_init */ + NULL, /* tp_alloc */ + Context_new, /* tp_new */ +}; + +void Context_AddModuleObject(PyObject *mod) +{ + if (PyType_Ready(&ContextType) < 0) + return; + + DBG(CXT, pymnt_debug("add to module")); + + Py_INCREF(&ContextType); + PyModule_AddObject(mod, "Context", (PyObject *)&ContextType); +} + + diff --git a/libmount/python/fs.c b/libmount/python/fs.c new file mode 100644 index 0000000..e989124 --- /dev/null +++ b/libmount/python/fs.c @@ -0,0 +1,883 @@ +/* + * Python bindings for the libmount library. + * + * Copyright (C) 2013, Red Hat, Inc. All rights reserved. + * Written by Ondrej Oprala and Karel Zak + * + * This file 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 3 of the License, or (at your option) any later version. + * + * This file 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 this file; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/* + * TODO: + * mnt_fs_match_{source,target} + * mnt_fs_get_{attribute,option} + */ + +#include "pylibmount.h" +#include <errno.h> + +#define Fs_HELP "Fs(source=None, root=None, target=None, fstype=None, options=None, attributes=None, freq=0, passno=0)" + +static PyMemberDef Fs_members[] = { + {NULL} +}; + +static PyObject *Fs_get_tag(FsObject *self) +{ + const char *tag = NULL, *val = NULL; + PyObject *result; + + if (mnt_fs_get_tag(self->fs, &tag, &val) != 0) + return NULL; + + result = Py_BuildValue("(ss)", tag, val); + if (!result) + PyErr_SetString(PyExc_RuntimeError, CONSTRUCT_ERR); + return result; +} + +static PyObject *Fs_get_id(FsObject *self) +{ + return PyObjectResultInt(mnt_fs_get_id(self->fs)); +} + +static PyObject *Fs_get_parent_id(FsObject *self) +{ + return PyObjectResultInt(mnt_fs_get_parent_id(self->fs)); +} + +static PyObject *Fs_get_devno(FsObject *self) +{ + return PyObjectResultInt(mnt_fs_get_devno(self->fs)); +} + +static void _dump_debug_string(const char *lead, const char *s, char quote) +{ + /* PySys_WriteStdout() will automatically truncate any '%s' token + * longer than a certain length (documented as 1000 bytes, but we + * give ourselves some margin here just in case). The only way I + * know to get around this is to print such strings in bite-sized + * chunks. + */ + static const unsigned int _PY_MAX_LEN = 900; + static const char *_PY_MAX_LEN_FMT = "%.900s"; + unsigned int len; + + if (lead != NULL) + PySys_WriteStdout("%s", lead); + + if (quote != 0) + PySys_WriteStdout("%c", quote); + + for (len = strlen(s); len > _PY_MAX_LEN; len -= _PY_MAX_LEN, s += _PY_MAX_LEN) + PySys_WriteStdout(_PY_MAX_LEN_FMT, s); + + if (len > 0) + PySys_WriteStdout(_PY_MAX_LEN_FMT, s); + + if (quote != 0) + PySys_WriteStdout("%c\n", quote); + else + PySys_WriteStdout("\n"); +} + +#define Fs_print_debug_HELP "print_debug()\n\n" +static PyObject *Fs_print_debug(FsObject *self) +{ + PySys_WriteStdout("------ fs: %p\n", self->fs); + _dump_debug_string("source: ", mnt_fs_get_source(self->fs), 0); + _dump_debug_string("target: ", mnt_fs_get_target(self->fs), 0); + _dump_debug_string("fstype: ", mnt_fs_get_fstype(self->fs), 0); + + if (mnt_fs_get_options(self->fs)) + _dump_debug_string("optstr: ", mnt_fs_get_options(self->fs), 0); + if (mnt_fs_get_vfs_options(self->fs)) + _dump_debug_string("VFS-optstr: ", mnt_fs_get_vfs_options(self->fs), 0); + if (mnt_fs_get_fs_options(self->fs)) + _dump_debug_string("FS-opstr: ", mnt_fs_get_fs_options(self->fs), 0); + if (mnt_fs_get_user_options(self->fs)) + _dump_debug_string("user-optstr: ", mnt_fs_get_user_options(self->fs), 0); + if (mnt_fs_get_optional_fields(self->fs)) + _dump_debug_string("optional-fields: ", mnt_fs_get_optional_fields(self->fs), '\''); + if (mnt_fs_get_attributes(self->fs)) + _dump_debug_string("attributes: ", mnt_fs_get_attributes(self->fs), 0); + + if (mnt_fs_get_root(self->fs)) + _dump_debug_string("root: ", mnt_fs_get_root(self->fs), 0); + + if (mnt_fs_get_swaptype(self->fs)) + _dump_debug_string("swaptype: ", mnt_fs_get_swaptype(self->fs), 0); + if (mnt_fs_get_size(self->fs)) + PySys_WriteStdout("size: %jd\n", mnt_fs_get_size(self->fs)); + if (mnt_fs_get_usedsize(self->fs)) + PySys_WriteStdout("usedsize: %jd\n", mnt_fs_get_usedsize(self->fs)); + if (mnt_fs_get_priority(self->fs)) + PySys_WriteStdout("priority: %d\n", mnt_fs_get_priority(self->fs)); + + if (mnt_fs_get_bindsrc(self->fs)) + _dump_debug_string("bindsrc: ", mnt_fs_get_bindsrc(self->fs), 0); + if (mnt_fs_get_freq(self->fs)) + PySys_WriteStdout("freq: %d\n", mnt_fs_get_freq(self->fs)); + if (mnt_fs_get_passno(self->fs)) + PySys_WriteStdout("pass: %d\n", mnt_fs_get_passno(self->fs)); + if (mnt_fs_get_id(self->fs)) + PySys_WriteStdout("id: %d\n", mnt_fs_get_id(self->fs)); + if (mnt_fs_get_parent_id(self->fs)) + PySys_WriteStdout("parent: %d\n", mnt_fs_get_parent_id(self->fs)); + if (mnt_fs_get_devno(self->fs)) + PySys_WriteStdout("devno: %d:%d\n", major(mnt_fs_get_devno(self->fs)), + minor(mnt_fs_get_devno(self->fs))); + if (mnt_fs_get_tid(self->fs)) + PySys_WriteStdout("tid: %d\n", mnt_fs_get_tid(self->fs)); + if (mnt_fs_get_comment(self->fs)) + _dump_debug_string("comment: ", mnt_fs_get_comment(self->fs), '\''); + return UL_IncRef(self); +} +/* + ** Fs getters/setters + */ + +static PyObject *Fs_get_comment(FsObject *self, void *closure __attribute__((unused))) +{ + return PyObjectResultStr(mnt_fs_get_comment(self->fs)); +} + +static int Fs_set_comment(FsObject *self, PyObject *value, void *closure __attribute__((unused))) +{ + char *comment = NULL; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(comment = pystos(value))) + return -1; + + rc = mnt_fs_set_comment(self->fs, comment); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} +/* source */ +static PyObject *Fs_get_source(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_source(self->fs)); +} + +static int Fs_set_source(FsObject *self, PyObject *value, void *closure __attribute__((unused))) +{ + char *source = NULL; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(source = pystos(value))) + return -1; + + rc = mnt_fs_set_source(self->fs, source); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static PyObject *Fs_get_srcpath(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_srcpath(self->fs)); +} + +static PyObject *Fs_get_root(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_root(self->fs)); +} + +static int Fs_set_root(FsObject *self, PyObject *value, void *closure __attribute__((unused))) +{ + char *root = NULL; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(root = pystos(value))) + return -1; + + rc = mnt_fs_set_root(self->fs, root); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static PyObject *Fs_get_target(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_target(self->fs)); +} + +static int Fs_set_target(FsObject *self, PyObject *value, void *closure __attribute__((unused))) +{ + char *target = NULL; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(target = pystos(value))) + return -1; + + rc = mnt_fs_set_target(self->fs, target); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static PyObject *Fs_get_fstype(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_fstype(self->fs)); +} + +static int Fs_set_fstype(FsObject *self, PyObject *value, + void *closure __attribute__((unused))) +{ + char *fstype = NULL; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(fstype = pystos(value))) + return -1; + + rc = mnt_fs_set_fstype(self->fs, fstype); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static PyObject *Fs_get_options(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_options(self->fs)); +} + +static int Fs_set_options(FsObject *self, PyObject *value, + void *closure __attribute__((unused))) +{ + char *options = NULL; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(options = pystos(value))) + return -1; + + rc = mnt_fs_set_options(self->fs, options); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static PyObject *Fs_get_vfs_options(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_vfs_options(self->fs)); +} + + +static PyObject *Fs_get_optional_fields(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_optional_fields(self->fs)); +} + + +static PyObject *Fs_get_fs_options(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_fs_options(self->fs)); +} + + +static PyObject *Fs_get_user_options(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_user_options(self->fs)); +} + + +static PyObject *Fs_get_attributes(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_attributes(self->fs)); +} + +static int Fs_set_attributes(FsObject *self, PyObject *value, + void *closure __attribute__((unused))) +{ + char *attributes = NULL; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(attributes = pystos(value))) + return -1; + + rc = mnt_fs_set_attributes(self->fs, attributes); + if (rc) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static PyObject *Fs_get_freq(FsObject *self, void *closure __attribute__((unused))) +{ + return PyObjectResultInt(mnt_fs_get_freq(self->fs)); +} + +static int Fs_set_freq(FsObject *self, PyObject *value, + void *closure __attribute__((unused))) +{ + int freq = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + + } + + if (!PyLong_Check(value)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return -1; + } + + freq = PyLong_AsLong(value); + if (freq == -1 && PyErr_Occurred()) { + PyErr_SetString(PyExc_RuntimeError, "type conversion failed"); + return -1; + } + return mnt_fs_set_freq(self->fs, freq); +} + +static PyObject *Fs_get_passno(FsObject *self) +{ + return PyObjectResultInt(mnt_fs_get_passno(self->fs)); +} + +static int Fs_set_passno(FsObject *self, PyObject *value, void *closure __attribute__((unused))) +{ + int passno = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + + if (!PyLong_Check(value)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return -1; + } + + passno = PyLong_AsLong(value); + if (passno == -1 && PyErr_Occurred()) { + PyErr_SetString(PyExc_RuntimeError, "type conversion failed"); + return -1; + } + return mnt_fs_set_passno(self->fs, passno); +} + +static PyObject *Fs_get_swaptype(FsObject *self) +{ + return PyObjectResultStr(mnt_fs_get_swaptype(self->fs)); +} + +static PyObject *Fs_get_size(FsObject *self) +{ + return PyObjectResultInt(mnt_fs_get_size(self->fs)); +} + +static PyObject *Fs_get_usedsize(FsObject *self) +{ + return PyObjectResultInt(mnt_fs_get_usedsize(self->fs)); +} + +static PyObject *Fs_get_priority(FsObject *self) +{ + return PyObjectResultInt(mnt_fs_get_priority(self->fs)); +} + +#define Fs_get_propagation_HELP "get_propagation(flags)\n\n\ +Note that this function set flags to zero if not found any propagation flag\n\ +in mountinfo file. The kernel default is MS_PRIVATE, this flag is not stored\n\ +in the mountinfo file.\n\ +\n\ +Returns self or raises an exception in case of an error." +static PyObject *Fs_get_propagation(FsObject *self) +{ + unsigned long flags; + int rc; + + rc = mnt_fs_get_propagation(self->fs, &flags); + return rc ? UL_RaiseExc(-rc) : PyObjectResultInt(flags); +} + +static PyObject *Fs_get_tid(FsObject *self) +{ + return PyObjectResultInt(mnt_fs_get_tid(self->fs)); +} + +#define Fs_is_kernel_HELP "is_kernel()\n\nReturns 1 if the filesystem " \ + "description is read from kernel e.g. /proc/mounts." +static PyObject *Fs_is_kernel(FsObject *self) +{ + return PyBool_FromLong(mnt_fs_is_kernel(self->fs)); +} + +#define Fs_is_netfs_HELP "is_netfs()\n\nReturns 1 if the filesystem is " \ + "a network filesystem" +static PyObject *Fs_is_netfs(FsObject *self) +{ + return PyBool_FromLong(mnt_fs_is_netfs(self->fs)); +} + +#define Fs_is_pseudofs_HELP "is_pseudofs()\n\nReturns 1 if the filesystem is "\ + "a pseudo fs type (proc, cgroups)" +static PyObject *Fs_is_pseudofs(FsObject *self) +{ + return PyBool_FromLong(mnt_fs_is_pseudofs(self->fs)); +} + +#define Fs_is_swaparea_HELP "is_swaparea()\n\nReturns 1 if the filesystem " \ + "uses \"swap\" as a type" +static PyObject *Fs_is_swaparea(FsObject *self) +{ + return PyBool_FromLong(mnt_fs_is_swaparea(self->fs)); +} + +#define Fs_append_attributes_HELP "append_attributes(optstr)\n\n" \ + "Appends mount attributes." +static PyObject *Fs_append_attributes(FsObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"optstr", NULL}; + char *optstr = NULL; + int rc; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &optstr)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_fs_append_attributes(self->fs, optstr); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Fs_append_options_HELP "append_options(optstr)\n\n" \ + "Parses (splits) optstr and appends results to VFS, " \ + "FS and userspace lists of options." +static PyObject *Fs_append_options(FsObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"optstr", NULL}; + char *optstr = NULL; + int rc; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &optstr)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_fs_append_options(self->fs, optstr); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Fs_prepend_attributes_HELP "prepend_attributes(optstr)\n\n" \ + "Prepends mount attributes." +static PyObject *Fs_prepend_attributes(FsObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"optstr", NULL}; + char *optstr = NULL; + int rc; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &optstr)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_fs_prepend_attributes(self->fs, optstr); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Fs_prepend_options_HELP "prepend_options(optstr)\n\n" \ + "Parses (splits) optstr and prepends results to VFS, " \ + "FS and userspace lists of options." +static PyObject *Fs_prepend_options(FsObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"optstr", NULL}; + char *optstr = NULL; + int rc; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &optstr)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_fs_prepend_options(self->fs, optstr); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Fs_match_fstype_HELP "match_fstype(pattern)\n\n" \ + "pattern: filesystem name or comma delimited list(string) of names\n\n" \ + "The pattern list of filesystem can be prefixed with a global\n" \ + "\"no\" prefix to invert matching of the whole list. The \"no\" could\n" \ + "also be used for individual items in the pattern list. So,\n" \ + "\"nofoo,bar\" has the same meaning as \"nofoo,nobar\".\n" \ + "\"bar\" : \"nofoo,bar\" -> False (global \"no\" prefix)\n" \ + "\"bar\" : \"foo,bar\" -> True\n" \ + "\"bar\" : \"foo,nobar\" -> False\n\n" \ + "Returns True if type is matching, else False." +static PyObject *Fs_match_fstype(FsObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"pattern", NULL}; + char *pattern = NULL; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &pattern)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyBool_FromLong(mnt_fs_match_fstype(self->fs, pattern)); +} + +#define Fs_match_options_HELP "match_options(options)\n\n" \ + "options: comma delimited list of options (and nooptions)\n" \ + "Returns True if fs type is matching to options else False." +static PyObject *Fs_match_options(FsObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"options", NULL}; + char *options = NULL; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &options)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyBool_FromLong(mnt_fs_match_options(self->fs, options)); +} + +#define Fs_streq_srcpath_HELP "streq_srcpath(srcpath)\n\n" \ + "Compares fs source path with path. The tailing slash is ignored.\n" \ + "Returns True if fs source path equal to path, otherwise False." +static PyObject *Fs_streq_srcpath(FsObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"srcpath", NULL}; + char *srcpath = NULL; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &srcpath)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyBool_FromLong(mnt_fs_streq_srcpath(self->fs, srcpath)); +} + +#define Fs_streq_target_HELP "streq_target(target)\n\n" \ + "Compares fs target path with path. The tailing slash is ignored.\n" \ + "See also Fs.match_target().\n" \ + "Returns True if fs target path equal to path, otherwise False." +static PyObject *Fs_streq_target(FsObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"target", NULL}; + char *target = NULL; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &target)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyBool_FromLong(mnt_fs_streq_target(self->fs, target)); +} + +#define Fs_copy_fs_HELP "copy_fs(dest=None)\n\n" \ + "If dest is None, a new object is created, if any fs " \ + "field is already set, then the field is NOT overwritten." +static PyObject *Fs_copy_fs(FsObject *self, PyObject *args, PyObject *kwds); + +static PyMethodDef Fs_methods[] = { + {"get_propagation", (PyCFunction)Fs_get_propagation, METH_NOARGS, Fs_get_propagation_HELP}, + {"mnt_fs_append_attributes", (PyCFunction)Fs_append_attributes, METH_VARARGS|METH_KEYWORDS, Fs_append_attributes_HELP}, + {"append_options", (PyCFunction)Fs_append_options, METH_VARARGS|METH_KEYWORDS, Fs_append_options_HELP}, + {"mnt_fs_prepend_attributes", (PyCFunction)Fs_prepend_attributes, METH_VARARGS|METH_KEYWORDS, Fs_prepend_attributes_HELP}, + {"prepend_options", (PyCFunction)Fs_prepend_options, METH_VARARGS|METH_KEYWORDS, Fs_prepend_options_HELP}, + {"copy_fs", (PyCFunction)Fs_copy_fs, METH_VARARGS|METH_KEYWORDS, Fs_copy_fs_HELP}, + {"is_kernel", (PyCFunction)Fs_is_kernel, METH_NOARGS, Fs_is_kernel_HELP}, + {"is_netfs", (PyCFunction)Fs_is_netfs, METH_NOARGS, Fs_is_netfs_HELP}, + {"is_pseudofs", (PyCFunction)Fs_is_pseudofs, METH_NOARGS, Fs_is_pseudofs_HELP}, + {"is_swaparea", (PyCFunction)Fs_is_swaparea, METH_NOARGS, Fs_is_swaparea_HELP}, + {"match_fstype", (PyCFunction)Fs_match_fstype, METH_VARARGS|METH_KEYWORDS, Fs_match_fstype_HELP}, + {"match_options", (PyCFunction)Fs_match_options, METH_VARARGS|METH_KEYWORDS, Fs_match_options_HELP}, + {"streq_srcpath", (PyCFunction)Fs_streq_srcpath, METH_VARARGS|METH_KEYWORDS, Fs_streq_srcpath_HELP}, + {"streq_target", (PyCFunction)Fs_streq_target, METH_VARARGS|METH_KEYWORDS, Fs_streq_target_HELP}, + {"print_debug", (PyCFunction)Fs_print_debug, METH_NOARGS, Fs_print_debug_HELP}, + {NULL} +}; + +static void Fs_destructor(FsObject *self) +{ + DBG(FS, pymnt_debug_h(self->fs, "destructor py-obj: %p, py-refcnt=%d", + self, (int) ((PyObject *) self)->ob_refcnt)); + mnt_unref_fs(self->fs); + PyFree(self); +} + +static PyObject *Fs_new(PyTypeObject *type, PyObject *args __attribute__((unused)), + PyObject *kwds __attribute__((unused))) +{ + FsObject *self = (FsObject*)type->tp_alloc(type, 0); + + if (self) { + self->fs = NULL; + DBG(FS, pymnt_debug_h(self, "new")); + } + return (PyObject *) self; +} + +static int Fs_init(FsObject *self, PyObject *args, PyObject *kwds) +{ + char *source = NULL, *root = NULL, *target = NULL; + char *fstype = NULL, *options = NULL, *attributes =NULL; + int freq = 0; int passno = 0; + int rc = 0; + char *kwlist[] = { + "source", "root", "target", + "fstype", "options", "attributes", + "freq", "passno", NULL + }; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "|ssssssii", kwlist, + &source, &root, &target, &fstype, &options, + &attributes, &freq, &passno)) { + PyErr_SetString(PyExc_TypeError, "Invalid type"); + return -1; + } + + DBG(FS, pymnt_debug_h(self, "init")); + + if (self->fs) + mnt_unref_fs(self->fs); + + self->fs = mnt_new_fs(); /* new FS with refcount=1 */ + + if (source && (rc = mnt_fs_set_source(self->fs, source))) { + PyErr_SetString(PyExc_MemoryError, MEMORY_ERR); + return rc; + } + if (root && (rc = mnt_fs_set_root(self->fs, root))) { + PyErr_SetString(PyExc_MemoryError, MEMORY_ERR); + return rc; + } + if (target && (rc = mnt_fs_set_target(self->fs, target))) { + PyErr_SetString(PyExc_MemoryError, MEMORY_ERR); + return rc; + } + if (fstype && (rc = mnt_fs_set_fstype(self->fs, fstype))) { + PyErr_SetString(PyExc_MemoryError, MEMORY_ERR); + return rc; + } + if (options && (rc = mnt_fs_set_options(self->fs, options))) { + PyErr_SetString(PyExc_MemoryError, MEMORY_ERR); + return rc; + } + if (attributes && (rc = mnt_fs_set_attributes(self->fs, attributes))) { + PyErr_SetString(PyExc_MemoryError, MEMORY_ERR); + return rc; + } + + mnt_fs_set_freq(self->fs, freq); + mnt_fs_set_passno(self->fs, passno); + mnt_fs_set_userdata(self->fs, self); /* store a pointer to self, convenient when resetting the table */ + return 0; +} + +/* + * missing: + * attribute + * option + */ +static PyGetSetDef Fs_getseters[] = { + {"id", (getter)Fs_get_id, NULL, "mountinfo[1]: ID", NULL}, + {"parent", (getter)Fs_get_parent_id, NULL, "mountinfo[2]: parent", NULL}, + {"devno", (getter)Fs_get_devno, NULL, "mountinfo[3]: st_dev", NULL}, + {"comment", (getter)Fs_get_comment, (setter)Fs_set_comment, "fstab entry comment", NULL}, + {"source", (getter)Fs_get_source, (setter)Fs_set_source, "fstab[1], mountinfo[10], swaps[1]: source dev, file, dir or TAG", NULL}, + {"srcpath", (getter)Fs_get_srcpath, NULL, "mount source path or NULL in case of error or when the path is not defined.", NULL}, + {"root", (getter)Fs_get_root, (setter)Fs_set_root, "mountinfo[4]: root of the mount within the FS", NULL}, + {"target", (getter)Fs_get_target, (setter)Fs_set_target, "mountinfo[5], fstab[2]: mountpoint", NULL}, + {"fstype", (getter)Fs_get_fstype, (setter)Fs_set_fstype, "mountinfo[9], fstab[3]: filesystem type", NULL}, + {"options", (getter)Fs_get_options, (setter)Fs_set_options, "fstab[4]: merged options", NULL}, + {"vfs_options", (getter)Fs_get_vfs_options, NULL, "mountinfo[6]: fs-independent (VFS) options", NULL}, + {"opt_fields", (getter)Fs_get_optional_fields, NULL, "mountinfo[7]: optional fields", NULL}, + {"fs_options", (getter)Fs_get_fs_options, NULL, "mountinfo[11]: fs-dependent options", NULL}, + {"usr_options", (getter)Fs_get_user_options, NULL, "userspace mount options", NULL}, + {"attributes", (getter)Fs_get_attributes, (setter)Fs_set_attributes, "mount attributes", NULL}, + {"freq", (getter)Fs_get_freq, (setter)Fs_set_freq, "fstab[5]: dump frequency in days", NULL}, + {"passno", (getter)Fs_get_passno, (setter)Fs_set_passno, "fstab[6]: pass number on parallel fsck", NULL}, + {"swaptype", (getter)Fs_get_swaptype, NULL, "swaps[2]: device type", NULL}, + {"size", (getter)Fs_get_size, NULL, "saps[3]: swaparea size", NULL}, + {"usedsize", (getter)Fs_get_usedsize, NULL, "swaps[4]: used size", NULL}, + {"priority", (getter)Fs_get_priority, NULL, "swaps[5]: swap priority", NULL}, + {"tag", (getter)Fs_get_tag, NULL, "(Name, Value)", NULL}, + {"tid", (getter)Fs_get_tid, NULL, "/proc/<tid>/mountinfo, otherwise zero", NULL}, + {NULL} +}; + +static PyObject *Fs_repr(FsObject *self) +{ + const char *src = mnt_fs_get_source(self->fs), + *tgt = mnt_fs_get_target(self->fs), + *type = mnt_fs_get_fstype(self->fs); + + return PyUnicode_FromFormat( + "<libmount.Fs object at %p, " + "source=%s, target=%s, fstype=%s>", + self, + src ? src : "None", + tgt ? tgt : "None", + type ? type : "None"); +} + +PyObject *PyObjectResultFs(struct libmnt_fs *fs) +{ + FsObject *result; + + if (!fs) { + PyErr_SetString(LibmountError, "internal exception"); + return NULL; + } + + result = mnt_fs_get_userdata(fs); + if (result) { + Py_INCREF(result); + DBG(FS, pymnt_debug_h(fs, "result py-obj %p: already exists, py-refcnt=%d", + result, (int) ((PyObject *) result)->ob_refcnt)); + return (PyObject *) result; + } + + /* Creating an encapsulating object: increment the refcount, so that code + * such as tab.next_fs() doesn't call the destructor, which would free + * our fs struct as well + */ + result = PyObject_New(FsObject, &FsType); + if (!result) { + UL_RaiseExc(ENOMEM); + return NULL; + } + + Py_INCREF(result); + mnt_ref_fs(fs); + + DBG(FS, pymnt_debug_h(fs, "result py-obj %p new, py-refcnt=%d", + result, (int) ((PyObject *) result)->ob_refcnt)); + result->fs = fs; + mnt_fs_set_userdata(fs, result); + return (PyObject *) result; +} + +static PyObject *Fs_copy_fs(FsObject *self, PyObject *args, PyObject *kwds) +{ + PyObject *dest = NULL; + char *kwlist[] = {"dest", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O", kwlist, &dest)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + if (PyObject_TypeCheck(dest, &FsType)) { /* existing object passed as argument */ + if (!mnt_copy_fs(((FsObject *)dest)->fs, self->fs)) + return NULL; + DBG(FS, pymnt_debug_h(dest, "copy data")); + return (PyObject *)dest; + + } + + if (dest == Py_None) { /* create new object */ + FsObject *result = PyObject_New(FsObject, &FsType); + + DBG(FS, pymnt_debug_h(result, "new copy")); + result->fs = mnt_copy_fs(NULL, self->fs); + mnt_fs_set_userdata(result->fs, result); /* keep a pointer to encapsulating object */ + return (PyObject *)result; + } + + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; +} + + +PyTypeObject FsType = { + PyVarObject_HEAD_INIT(NULL, 0) + "libmount.Fs", /*tp_name*/ + sizeof(FsObject), /*tp_basicsize*/ + 0, /*tp_itemsize*/ + (destructor)Fs_destructor, /*tp_dealloc*/ + 0, /*tp_print*/ + NULL, /*tp_getattr*/ + NULL, /*tp_setattr*/ + NULL, /*tp_compare*/ + (reprfunc)Fs_repr, /*tp_repr*/ + NULL, /*tp_as_number*/ + NULL, /*tp_as_sequence*/ + NULL, /*tp_as_mapping*/ + NULL, /*tp_hash */ + NULL, /*tp_call*/ + NULL, /*tp_str*/ + NULL, /*tp_getattro*/ + NULL, /*tp_setattro*/ + NULL, /*tp_as_buffer*/ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ + Fs_HELP, /* tp_doc */ + NULL, /* tp_traverse */ + NULL, /* tp_clear */ + NULL, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + NULL, /* tp_iter */ + NULL, /* tp_iternext */ + Fs_methods, /* tp_methods */ + Fs_members, /* tp_members */ + Fs_getseters, /* tp_getset */ + NULL, /* tp_base */ + NULL, /* tp_dict */ + NULL, /* tp_descr_get */ + NULL, /* tp_descr_set */ + 0, /* tp_dictoffset */ + (initproc)Fs_init, /* tp_init */ + NULL, /* tp_alloc */ + Fs_new, /* tp_new */ +}; + +void FS_AddModuleObject(PyObject *mod) +{ + if (PyType_Ready(&FsType) < 0) + return; + + DBG(FS, pymnt_debug("add to module")); + Py_INCREF(&FsType); + PyModule_AddObject(mod, "Fs", (PyObject *)&FsType); +} + diff --git a/libmount/python/pylibmount.c b/libmount/python/pylibmount.c new file mode 100644 index 0000000..2e6bb62 --- /dev/null +++ b/libmount/python/pylibmount.c @@ -0,0 +1,323 @@ +/* + * Python bindings for the libmount library. + * + * Copyright (C) 2013, Red Hat, Inc. All rights reserved. + * Written by Ondrej Oprala and Karel Zak + * + * This file 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 3 of the License, or (at your option) any later version. + * + * This file 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 this file; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#include "pylibmount.h" + +/* Libmount-specific Exception class */ +PyObject *LibmountError; +int pylibmount_debug_mask; + +PyObject *UL_IncRef(void *killme) +{ + Py_INCREF(killme); + return killme; +} + +void PyFree(void *o) +{ +#if PY_MAJOR_VERSION >= 3 + Py_TYPE(o)->tp_free((PyObject *)o); +#else + ((PyObject *)o)->ob_type->tp_free((PyObject *)o); +#endif +} + +/* Demultiplexer for various possible error conditions across the libmount library */ +void *UL_RaiseExc(int e) +{ + /* TODO: Do we need to deal with -1/1? */ + switch (e) { + case ENOMEM: + PyErr_SetString(PyExc_MemoryError, strerror(e)); + break; + case EINVAL: + PyErr_SetString(PyExc_TypeError, strerror(e)); + break; + /* libmount-specific errors */ + case MNT_ERR_NOFSTAB: + PyErr_SetString(LibmountError, "Not found required entry in fstab"); + break; + case MNT_ERR_NOFSTYPE: + PyErr_SetString(LibmountError, "Lailed to detect filesystem type"); + break; + case MNT_ERR_NOSOURCE: + PyErr_SetString(LibmountError, "Required mount source undefined"); + break; + case MNT_ERR_LOOPDEV: + PyErr_SetString(LibmountError, "Loopdev setup failed"); + break; + case MNT_ERR_APPLYFLAGS: + PyErr_SetString(LibmountError, "Failed to parse/use userspace mount options"); + break; + case MNT_ERR_MOUNTOPT: + PyErr_SetString(LibmountError, "Failed to apply propagation flags"); + break; + case MNT_ERR_AMBIFS: + PyErr_SetString(LibmountError, "Libblkid detected more filesystems on the device"); + break; + case MNT_ERR_LOOPOVERLAP: + PyErr_SetString(LibmountError, "Detected overlapping loop device that cannot be re-use"); + break; + case MNT_ERR_LOCK: + PyErr_SetString(LibmountError, "Failed to lock mtab/utab or so"); + break; + case MNT_ERR_NAMESPACE: + PyErr_SetString(LibmountError, "Failed to switch namespace"); + break; + /* some other errno */ + default: + PyErr_SetString(PyExc_Exception, strerror(e)); + break; + } + return NULL; +} + +/* + * General functions + */ +PyObject *PyObjectResultInt(int i) +{ + PyObject *result = Py_BuildValue("i", i); + if (!result) + PyErr_SetString(PyExc_RuntimeError, CONSTRUCT_ERR); + return result; +} + +PyObject *PyObjectResultStr(const char *s) +{ + PyObject *result; + if (!s) + /* TODO: maybe lie about it and return "": + * which would allow for + * fs = libmount.Fs() + * fs.comment += "comment" + return Py_BuildValue("s", ""); */ + Py_RETURN_NONE; + result = Py_BuildValue("s", s); + if (!result) + PyErr_SetString(PyExc_RuntimeError, CONSTRUCT_ERR); + return result; +} + +/* wrapper around a common use case for PyUnicode_AsASCIIString() */ +char *pystos(PyObject *pys) +{ +#if PY_MAJOR_VERSION >= 3 + if (!PyUnicode_Check(pys)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return (char *)PyUnicode_1BYTE_DATA(pys); +#else + if (!PyString_Check(pys)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyString_AsString(pys); +#endif +} + +/* + * the libmount module + */ +#define PYLIBMOUNT_DESC \ + "Python API for the util-linux libmount library.\n\n" \ + "Please note that none of the classes' attributes may be deleted.\n" \ + "This is not a complete mapping to the libmount C API, nor is it\n" \ + "attempting to be one.\n" "Iterator functions only allow forward\n" \ + "iteration for now. Context.get_{user_,}mflags() differs from the C API\n" \ + "and returns the flags directly. Fs.get_tag() differs from the C API\n" \ + "and returns a (tag, value) tuple. Every attribute is \"filtered\"" \ + "through appropriate getters/setters, no values are set directly." + + +struct module_state { + PyObject *error; +}; + +#if PY_MAJOR_VERSION >= 3 +#define GETSTATE(m) ((struct module_state*)PyModule_GetState(m)) +#else +#define GETSTATE(m) (&_state) +static struct module_state _state; +#endif + +static PyObject * +error_out(PyObject *m __attribute__((unused))) { + struct module_state *st = GETSTATE(m); + PyErr_SetString(st->error, "something bad happened"); + return NULL; +} + +static PyMethodDef pylibmount_methods[] = { + {"error_out", (PyCFunction)error_out, METH_NOARGS, NULL}, + {NULL, NULL} +}; + +#if PY_MAJOR_VERSION >= 3 + +static int pylibmount_traverse(PyObject *m, visitproc visit, void *arg) { + Py_VISIT(GETSTATE(m)->error); + return 0; +} + +static int pylibmount_clear(PyObject *m) { + Py_CLEAR(GETSTATE(m)->error); + return 0; +} + +static struct PyModuleDef moduledef = { + PyModuleDef_HEAD_INIT, + "pylibmount", + NULL, + sizeof(struct module_state), + pylibmount_methods, + NULL, + pylibmount_traverse, + pylibmount_clear, + NULL +}; +#define INITERROR return NULL +PyObject * PyInit_pylibmount(void); +PyObject * PyInit_pylibmount(void) +#else +#define INITERROR return +# ifndef PyMODINIT_FUNC +# define PyMODINIT_FUNC void +# endif +PyMODINIT_FUNC initpylibmount(void); +PyMODINIT_FUNC initpylibmount(void) +#endif +{ +#if PY_MAJOR_VERSION >= 3 + PyObject *m = PyModule_Create(&moduledef); +#else + PyObject *m = Py_InitModule3("pylibmount", pylibmount_methods, PYLIBMOUNT_DESC); +#endif + + if (!m) + INITERROR; + /* + * init debug stuff + */ + if (!(pylibmount_debug_mask & PYMNT_DEBUG_INIT)) { + char *str = getenv("PYLIBMOUNT_DEBUG"); + + pylibmount_debug_mask = 0; + if (str) + pylibmount_debug_mask = strtoul(str, NULL, 0); + + pylibmount_debug_mask |= PYMNT_DEBUG_INIT; + } + + if (pylibmount_debug_mask && pylibmount_debug_mask != PYMNT_DEBUG_INIT) + DBG(INIT, pymnt_debug("library debug mask: 0x%04x", + pylibmount_debug_mask)); + mnt_init_debug(0); + + /* + * Add module objects + */ + LibmountError = PyErr_NewException("libmount.Error", NULL, NULL); + Py_INCREF(LibmountError); + PyModule_AddObject(m, "Error", (PyObject *)LibmountError); + + FS_AddModuleObject(m); + Table_AddModuleObject(m); +#ifdef __linux__ + Context_AddModuleObject(m); +#endif + + /* + * mount(8) userspace options masks (MNT_MAP_USERSPACE map) + */ + PyModule_AddIntConstant(m, "MNT_MS_COMMENT", MNT_MS_COMMENT); + PyModule_AddIntConstant(m, "MNT_MS_GROUP", MNT_MS_GROUP); + PyModule_AddIntConstant(m, "MNT_MS_HELPER", MNT_MS_HELPER); + PyModule_AddIntConstant(m, "MNT_MS_LOOP", MNT_MS_LOOP); + PyModule_AddIntConstant(m, "MNT_MS_NETDEV", MNT_MS_NETDEV); + PyModule_AddIntConstant(m, "MNT_MS_NOAUTO", MNT_MS_NOAUTO); + PyModule_AddIntConstant(m, "MNT_MS_NOFAIL", MNT_MS_NOFAIL); + PyModule_AddIntConstant(m, "MNT_MS_OFFSET", MNT_MS_OFFSET); + PyModule_AddIntConstant(m, "MNT_MS_OWNER", MNT_MS_OWNER); + PyModule_AddIntConstant(m, "MNT_MS_SIZELIMIT", MNT_MS_SIZELIMIT); + PyModule_AddIntConstant(m, "MNT_MS_ENCRYPTION", MNT_MS_ENCRYPTION); + PyModule_AddIntConstant(m, "MNT_MS_UHELPER", MNT_MS_UHELPER); + PyModule_AddIntConstant(m, "MNT_MS_USER", MNT_MS_USER); + PyModule_AddIntConstant(m, "MNT_MS_USERS", MNT_MS_USERS); + PyModule_AddIntConstant(m, "MNT_MS_XCOMMENT", MNT_MS_XCOMMENT); + PyModule_AddIntConstant(m, "MNT_MS_HASH_DEVICE", MNT_MS_HASH_DEVICE); + PyModule_AddIntConstant(m, "MNT_MS_ROOT_HASH", MNT_MS_ROOT_HASH); + PyModule_AddIntConstant(m, "MNT_MS_HASH_OFFSET", MNT_MS_HASH_OFFSET); + PyModule_AddIntConstant(m, "MNT_MS_ROOT_HASH_FILE", MNT_MS_ROOT_HASH_FILE); + PyModule_AddIntConstant(m, "MNT_MS_FEC_DEVICE", MNT_MS_FEC_DEVICE); + PyModule_AddIntConstant(m, "MNT_MS_FEC_OFFSET", MNT_MS_FEC_OFFSET); + PyModule_AddIntConstant(m, "MNT_MS_FEC_ROOTS", MNT_MS_FEC_ROOTS); + PyModule_AddIntConstant(m, "MNT_MS_ROOT_HASH_SIG", MNT_MS_ROOT_HASH_SIG); + + /* + * mount(2) MS_* masks (MNT_MAP_LINUX map) + */ + PyModule_AddIntConstant(m, "MS_BIND", MS_BIND); + PyModule_AddIntConstant(m, "MS_DIRSYNC", MS_DIRSYNC); + PyModule_AddIntConstant(m, "MS_I_VERSION", MS_I_VERSION); + PyModule_AddIntConstant(m, "MS_MANDLOCK", MS_MANDLOCK); + PyModule_AddIntConstant(m, "MS_MGC_MSK", MS_MGC_MSK); + PyModule_AddIntConstant(m, "MS_MGC_VAL", MS_MGC_VAL); + PyModule_AddIntConstant(m, "MS_MOVE", MS_MOVE); + PyModule_AddIntConstant(m, "MS_NOATIME", MS_NOATIME); + PyModule_AddIntConstant(m, "MS_NODEV", MS_NODEV); + PyModule_AddIntConstant(m, "MS_NODIRATIME", MS_NODIRATIME); + PyModule_AddIntConstant(m, "MS_NOEXEC", MS_NOEXEC); + PyModule_AddIntConstant(m, "MS_NOSUID", MS_NOSUID); + PyModule_AddIntConstant(m, "MS_OWNERSECURE", MS_OWNERSECURE); + PyModule_AddIntConstant(m, "MS_PRIVATE", MS_PRIVATE); + PyModule_AddIntConstant(m, "MS_PROPAGATION", MS_PROPAGATION); + PyModule_AddIntConstant(m, "MS_RDONLY", MS_RDONLY); + PyModule_AddIntConstant(m, "MS_REC", MS_REC); + PyModule_AddIntConstant(m, "MS_RELATIME", MS_RELATIME); + PyModule_AddIntConstant(m, "MS_REMOUNT", MS_REMOUNT); + PyModule_AddIntConstant(m, "MS_SECURE", MS_SECURE); + PyModule_AddIntConstant(m, "MS_SHARED", MS_SHARED); + PyModule_AddIntConstant(m, "MS_SILENT", MS_SILENT); + PyModule_AddIntConstant(m, "MS_SLAVE", MS_SLAVE); + PyModule_AddIntConstant(m, "MS_STRICTATIME", MS_STRICTATIME); + PyModule_AddIntConstant(m, "MS_SYNCHRONOUS", MS_SYNCHRONOUS); + PyModule_AddIntConstant(m, "MS_UNBINDABLE", MS_UNBINDABLE); + + /* Will we need these directly? + PyModule_AddIntConstant(m, "MNT_ERR_AMBIFS", MNT_ERR_AMBIFS); + PyModule_AddIntConstant(m, "MNT_ERR_APPLYFLAGS", MNT_ERR_APPLYFLAGS); + PyModule_AddIntConstant(m, "MNT_ERR_LOOPDEV", MNT_ERR_LOOPDEV); + PyModule_AddIntConstant(m, "MNT_ERR_MOUNTOPT", MNT_ERR_MOUNTOPT); + PyModule_AddIntConstant(m, "MNT_ERR_NOFSTAB", MNT_ERR_NOFSTAB); + PyModule_AddIntConstant(m, "MNT_ERR_NOFSTYPE", MNT_ERR_NOFSTYPE); + PyModule_AddIntConstant(m, "MNT_ERR_NOSOURCE", MNT_ERR_NOSOURCE); + */ + + /* Still useful for functions using iterators internally */ + PyModule_AddIntConstant(m, "MNT_ITER_FORWARD", MNT_ITER_FORWARD); + PyModule_AddIntConstant(m, "MNT_ITER_BACKWARD", MNT_ITER_BACKWARD); + +#if PY_MAJOR_VERSION >= 3 + return m; +#endif +} + diff --git a/libmount/python/pylibmount.h b/libmount/python/pylibmount.h new file mode 100644 index 0000000..bf3278d --- /dev/null +++ b/libmount/python/pylibmount.h @@ -0,0 +1,131 @@ +#ifndef UTIL_LINUX_PYLIBMOUNT_H +#define UTIL_LINUX_PYLIBMOUNT_H + +#include <Python.h> +#include <structmember.h> + +#include "c.h" +#include "libmount.h" + +#define CONFIG_PYLIBMOUNT_DEBUG + +#define PYMNT_DEBUG_INIT (1 << 1) +#define PYMNT_DEBUG_TAB (1 << 2) +#define PYMNT_DEBUG_FS (1 << 3) +#define PYMNT_DEBUG_CXT (1 << 4) + +#ifdef CONFIG_PYLIBMOUNT_DEBUG +# include <stdio.h> +# include <stdarg.h> + +# define DBG(m, x) do { \ + if ((PYMNT_DEBUG_ ## m) & pylibmount_debug_mask) { \ + fprintf(stderr, "%d: pylibmount: %6s: ", getpid(), # m); \ + x; \ + } \ + } while (0) + +extern int pylibmount_debug_mask; + +static inline void __attribute__ ((__format__ (__printf__, 1, 2))) +pymnt_debug(const char *mesg, ...) +{ + va_list ap; + va_start(ap, mesg); + vfprintf(stderr, mesg, ap); + va_end(ap); + fputc('\n', stderr); +} + +static inline void __attribute__ ((__format__ (__printf__, 2, 3))) +pymnt_debug_h(void *handler, const char *mesg, ...) +{ + va_list ap; + + if (handler) + fprintf(stderr, "[%p]: ", handler); + va_start(ap, mesg); + vfprintf(stderr, mesg, ap); + va_end(ap); + fputc('\n', stderr); +} + +#else /* !CONFIG_PYLIBMOUNT_DEBUG */ +# define DBG(m,x) do { ; } while (0) +#endif + + +#define NODEL_ATTR "This attribute cannot be deleted" +#define CONSTRUCT_ERR "Error during object construction" +#define ARG_ERR "Invalid number or type of arguments" +#define NOFS_ERR "No filesystems to mount" +#define MEMORY_ERR strerror(ENOMEM) +#define CONV_ERR "Type conversion failed" + +/* + * fs.c + */ +typedef struct { + PyObject_HEAD + struct libmnt_fs *fs; +} FsObject; + +extern PyTypeObject FsType; + +extern PyObject *PyObjectResultFs(struct libmnt_fs *fs); +extern void FS_AddModuleObject(PyObject *mod); + +/* + * tab.c + */ +typedef struct { + PyObject_HEAD + + struct libmnt_table *tab; + struct libmnt_iter *iter; + PyObject *errcb; +} TableObject; + +extern PyTypeObject TableType; + +extern PyObject *PyObjectResultTab(struct libmnt_table *tab); + +extern void Table_unref(struct libmnt_table *tab); +extern void Table_AddModuleObject(PyObject *mod); + +extern int pymnt_table_parser_errcb(struct libmnt_table *tb, const char *filename, int line); + +#ifdef __linux__ + +/* + * context.c + */ +typedef struct { + PyObject_HEAD + + struct libmnt_context *cxt; + PyObject *table_errcb; + +} ContextObjext; + +extern PyTypeObject ContextType; +extern void Context_AddModuleObject(PyObject *mod); + +#endif /* __linux__ */ + +/* + * misc + */ +extern PyObject *LibmountError; +extern PyObject *UL_IncRef(void *killme); +extern void *UL_RaiseExc(int e); + +extern PyObject *PyObjectResultInt(int i); +extern PyObject *PyObjectResultStr(const char *s); + +extern char *pystos(PyObject *pys); +extern void PyFree(void *o); + + + +#endif /* UTIL_LINUX_PYLIBMOUNT */ diff --git a/libmount/python/tab.c b/libmount/python/tab.c new file mode 100644 index 0000000..5fce90a --- /dev/null +++ b/libmount/python/tab.c @@ -0,0 +1,783 @@ +/* + * Python bindings for the libmount library. + * + * Copyright (C) 2013, Red Hat, Inc. All rights reserved. + * Written by Ondrej Oprala and Karel Zak + * + * This file 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 3 of the License, or (at your option) any later version. + * + * This file 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 this file; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#include "pylibmount.h" + +static PyMemberDef Table_members[] = { + { NULL } +}; + +static int Table_set_parser_errcb(TableObject *self, PyObject *func, + void *closure __attribute__((unused))) +{ + PyObject *tmp; + + if (!func) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + + if (!PyCallable_Check(func)) + return -1; + + tmp = self->errcb; + Py_INCREF(func); + self->errcb = func; + Py_XDECREF(tmp); + return 0; +} + +static PyObject *Table_get_intro_comment(TableObject *self, + void *closure __attribute__((unused))) +{ + return PyObjectResultStr(mnt_table_get_intro_comment(self->tab)); +} + +static int Table_set_intro_comment(TableObject *self, PyObject *value, + void *closure __attribute__((unused))) +{ + char *comment = NULL; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(comment = pystos(value))) + return -1; + + if ((rc = mnt_table_set_intro_comment(self->tab, comment))) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +static PyObject *Table_get_trailing_comment(TableObject *self, + void *closure __attribute__((unused))) +{ + return PyObjectResultStr(mnt_table_get_trailing_comment(self->tab)); +} + +static int Table_set_trailing_comment(TableObject *self, PyObject *value, + void *closure __attribute__((unused))) +{ + char *comment = NULL; + int rc = 0; + + if (!value) { + PyErr_SetString(PyExc_TypeError, NODEL_ATTR); + return -1; + } + if (!(comment = pystos(value))) + return -1; + + if ((rc = mnt_table_set_trailing_comment(self->tab, comment))) { + UL_RaiseExc(-rc); + return -1; + } + return 0; +} + +#define Table_enable_comments_HELP "enable_comments(enable)\n\n" \ + "Enables parsing of comments.\n\n" \ + "The initial (intro) file comment is accessible by\n" \ + "Tab.intro_comment. The intro and the comment of the first fstab" \ + "entry has to be separated by blank line. The filesystem comments are\n" \ + "accessible by Fs.comment. The tailing fstab comment is accessible\n" \ + "by Tab.trailing_comment.\n" \ + "\n" \ + "<informalexample>\n" \ + "<programlisting>\n" \ + "#\n" \ + "# Intro comment\n" \ + "#\n" \ + "\n" \ + "# this comments belongs to the first fs\n" \ + "LABEL=foo /mnt/foo auto defaults 1 2\n" \ + "# this comments belongs to the second fs\n" \ + "LABEL=bar /mnt/bar auto defaults 1 2 \n" \ + "# tailing comment\n" \ + "</programlisting>\n" \ + "</informalexample>" +static PyObject *Table_enable_comments(TableObject *self, PyObject *args, + PyObject *kwds) +{ + int enable = 0; + char *kwlist[] = {"enable", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &enable)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + mnt_table_enable_comments(self->tab, enable); + Py_INCREF(self); + return (PyObject *)self; +} + +#define Table_replace_file_HELP "replace_file(filename)\n\n" \ + "This function replaces filename with the new content from TableObject." +static PyObject *Table_replace_file(TableObject *self, PyObject *args, PyObject *kwds) +{ + int rc; + char *filename = NULL; + char *kwlist[] = {"filename", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &filename)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_table_replace_file(self->tab, filename); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Table_write_file_HELP "write_file(path)\n\n" \ + "This function writes tab to file(stream)" +static PyObject *Table_write_file(TableObject *self, PyObject *args, PyObject *kwds) +{ + int rc; + //PyObject *stream = NULL; + FILE *f = NULL; + char *path = NULL; + char *kwlist[] = {"path", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, + &path)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + if (!(f = fopen(path, "w"))) + return UL_RaiseExc(errno); + rc = mnt_table_write_file(self->tab, f); + fclose(f); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Table_find_devno_HELP "find_devno(devno, [direction])\n\n" \ + "Note that zero could be valid device number for root pseudo " \ + "filesystem (e.g. tmpfs)\n" \ + "Returns a tab entry or None" +static PyObject *Table_find_devno(TableObject *self, PyObject *args, PyObject *kwds) +{ + dev_t devno; + int direction = MNT_ITER_BACKWARD; + char *kwlist[] = {"devno", "direction", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "I|i", kwlist, &devno, &direction)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyObjectResultFs(mnt_table_find_devno(self->tab, devno, direction)); +} + +#define Table_find_mountpoint_HELP "find_mountpoint(path, [direction])\n\n" \ + "Returns a tab entry or None." +static PyObject *Table_find_mountpoint(TableObject *self, PyObject *args, PyObject *kwds) +{ + char *path; + int direction = MNT_ITER_BACKWARD; + char *kwlist[] = {"path", "direction", NULL}; + + if (! PyArg_ParseTupleAndKeywords(args, kwds, "s|i", kwlist, &path, &direction)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyObjectResultFs(mnt_table_find_mountpoint(self->tab, path, direction)); +} + +#define Table_find_pair_HELP "find_pair(source, target, [direction])\n\n" \ + "Returns a tab entry or None." +static PyObject *Table_find_pair(TableObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"source", "target", "direction", NULL}; + char *source; + char *target; + int direction = MNT_ITER_BACKWARD; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "ss|i", kwlist, &source, &target, &direction)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyObjectResultFs(mnt_table_find_pair(self->tab, source, target, direction)); +} + +#define Table_find_source_HELP "find_source(source, [direction])\n\n" \ + "Returns a tab entry or None." +static PyObject *Table_find_source(TableObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"source", "direction", NULL}; + char *source; + int direction = MNT_ITER_BACKWARD; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s|i", kwlist, &source, &direction)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyObjectResultFs(mnt_table_find_source(self->tab, source, direction)); +} + +#define Table_find_target_HELP "find_target(target, [direction])\n\n" \ + "Try to lookup an entry in given tab, possible are three iterations, first\n" \ + "with path, second with realpath(path) and third with realpath(path)\n" \ + "against realpath(fs->target). The 2nd and 3rd iterations are not performed\n" \ + "when tb cache is not set (cache not implemented yet).\n" \ + "\n" \ + "Returns a tab entry or None." +static PyObject *Table_find_target(TableObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"target", "direction", NULL}; + char *target; + int direction = MNT_ITER_BACKWARD; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s|i", kwlist, &target, &direction)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyObjectResultFs(mnt_table_find_target(self->tab, target, direction)); +} + +#define Table_find_srcpath_HELP "find_srcpath(srcpath, [direction])\n\n" \ + "Try to lookup an entry in given tab, possible are four iterations, first\n" \ + "with path, second with realpath(path), third with tags (LABEL, UUID, ..)\n" \ + "from path and fourth with realpath(path) against realpath(entry->srcpath).\n" \ + "\n" \ + "The 2nd, 3rd and 4th iterations are not performed when tb cache is not\n" \ + "set (not implemented yet).\n" \ + "\n" \ + "Note that None is a valid source path; it will be replaced with \"none\". The\n" \ + "\"none\" is used in /proc/{mounts,self/mountinfo} for pseudo filesystems.\n" \ + "\n" \ + "Returns a tab entry or None." +static PyObject *Table_find_srcpath(TableObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"srcpath", "direction", NULL}; + char *srcpath; + int direction = MNT_ITER_BACKWARD; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s|i", kwlist, &srcpath, &direction)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyObjectResultFs(mnt_table_find_srcpath(self->tab, srcpath, direction)); +} + +#define Table_find_tag_HELP "find_tag(tag, val, [direction])\n\n" \ + "Try to lookup an entry in given tab, first attempt is lookup by tag and\n" \ + "val, for the second attempt the tag is evaluated (converted to the device\n" \ + "name) and Tab.find_srcpath() is performed. The second attempt is not\n" \ + "performed when tb cache is not set (not implemented yet).\n" \ + "\n" \ + "Returns a tab entry or NULL." +static PyObject *Table_find_tag(TableObject *self, PyObject *args, PyObject *kwds) +{ + char *kwlist[] = {"tag", "val", "direction", NULL}; + char *tag; + char *val; + int direction = MNT_ITER_BACKWARD; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "ss|i", kwlist, &tag, &val, &direction)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyObjectResultFs(mnt_table_find_tag(self->tab, tag, val, direction)); +} + +static PyObject *Table_get_nents(TableObject *self) +{ + return PyObjectResultInt(mnt_table_get_nents(self->tab)); +} + +#define Table_is_fs_mounted_HELP "is_fs_mounted(fstab_fs)\n\n" \ + "Checks if the fstab_fs entry is already in the tb table. The \"swap\" is\n" \ + "ignored. This function explicitly compares source, target and root of the\n" \ + "filesystems.\n" \ + "\n" \ + "Note that source and target are canonicalized only if a cache for tb is\n" \ + "defined (not implemented yet). The target canonicalization may\n" \ + "trigger automount on autofs mountpoints!\n" \ + "\n" \ + "Don't use it if you want to know if a device is mounted, just use\n" \ + "Tab.find_source() for the device.\n" \ + "\n" \ + "This function is designed mostly for \"mount -a\".\n" \ + "\n" \ + "Returns a boolean value." +static PyObject *Table_is_fs_mounted(TableObject *self, PyObject *args, PyObject *kwds) +{ + FsObject *fs; + char *kwlist[] = {"fstab_fs", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!", kwlist, &FsType, &fs)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + return PyBool_FromLong(mnt_table_is_fs_mounted(self->tab, fs->fs)); +} + +#define Table_parse_file_HELP "parse_file(file)\n\n" \ + "Parses whole table (e.g. /etc/mtab) and appends new records to the tab.\n" \ + "\n" \ + "The libmount parser ignores broken (syntax error) lines, these lines are\n" \ + "reported to caller by errcb() function (see Tab.parser_errcb).\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Table_parse_file(TableObject *self, PyObject* args, PyObject *kwds) +{ + int rc; + char *file = NULL; + char *kwlist[] = {"file", NULL}; + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &file)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_table_parse_file(self->tab, file); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Table_parse_fstab_HELP "parse_fstab([fstab])\n\n" \ + "This function parses /etc/fstab and appends new lines to the tab. If the\n" \ + "filename is a directory then Tab.parse_dir() is called.\n" \ + "\n" \ + "See also Tab.parser_errcb.\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Table_parse_fstab(TableObject *self, PyObject* args, PyObject *kwds) +{ + int rc; + char *fstab = NULL; + char *kwlist[] = {"fstab", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "|s", kwlist, &fstab)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_table_parse_fstab(self->tab, fstab); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Table_parse_mtab_HELP "parse_mtab([mtab])\n\n" \ + "This function parses /etc/mtab or /proc/self/mountinfo\n" \ + "/run/mount/utabs or /proc/mounts.\n" \ + "\n" \ + "See also Tab.parser_errcb().\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Table_parse_mtab(TableObject *self, PyObject* args, PyObject *kwds) +{ + int rc; + char *mtab = NULL; + char *kwlist[] = {"mtab", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "|s", kwlist, &mtab)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_table_parse_mtab(self->tab, mtab); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Table_parse_dir_HELP "parse_dir(dir)\n\n" \ + "The directory:\n" \ + "- files are sorted by strverscmp(3)\n" \ + "- files that start with \".\" are ignored (e.g. \".10foo.fstab\")\n" \ + "- files without the \".fstab\" extension are ignored\n" \ + "\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Table_parse_dir(TableObject *self, PyObject* args, PyObject *kwds) +{ + int rc; + char *dir = NULL; + char *kwlist[] = {"dir", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &dir)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_table_parse_dir(self->tab, dir); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Table_parse_swaps_HELP "parse_swaps(swaps)\n\n" \ + "This function parses /proc/swaps and appends new lines to the tab" +static PyObject *Table_parse_swaps(TableObject *self, PyObject* args, PyObject *kwds) +{ + int rc; + char *swaps = NULL; + char *kwlist[] = {"swaps", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &swaps)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_table_parse_swaps(self->tab, swaps); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Table_add_fs_HELP "add_fs(fs)\n\nAdds a new entry to tab.\n" \ + "Returns self or raises an exception in case of an error." + +static PyObject *Table_add_fs(TableObject *self, PyObject* args, PyObject *kwds) +{ + int rc; + FsObject *fs = NULL; + char *kwlist[] = {"fs", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!", kwlist, &FsType, &fs)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + Py_INCREF(fs); + rc = mnt_table_add_fs(self->tab, fs->fs); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Table_remove_fs_HELP "remove_fs(fs)\n\n" \ + "Returns self or raises an exception in case of an error." +static PyObject *Table_remove_fs(TableObject *self, PyObject* args, PyObject *kwds) +{ + int rc; + FsObject *fs = NULL; + char *kwlist[] = {"fs", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!", kwlist, &FsType, &fs)) { + PyErr_SetString(PyExc_TypeError, ARG_ERR); + return NULL; + } + rc = mnt_table_remove_fs(self->tab, fs->fs); + Py_DECREF(fs); + return rc ? UL_RaiseExc(-rc) : UL_IncRef(self); +} + +#define Table_next_fs_HELP "next_fs()\n\n" \ + "Returns the next Fs on success, raises an exception in case " \ + "of an error and None at end of list.\n" \ + "\n" \ + "Example:\n" \ + "<informalexample>\n" \ + "<programlisting>\n" \ + "import libmount\n" \ + "import functools\n" \ + "for fs in iter(functools.partial(tb.next_fs), None):\n" \ + " dir = Fs.target\n" \ + " print \"mount point: {:s}\".format(dir)\n" \ + "\n" \ + "</programlisting>\n" \ + "</informalexample>\n" \ + "\n" \ + "lists all mountpoints from fstab in backward order." +static PyObject *Table_next_fs(TableObject *self) +{ + struct libmnt_fs *fs; + int rc; + + /* Reset the builtin iterator after reaching the end of the list */ + rc = mnt_table_next_fs(self->tab, self->iter, &fs); + if (rc == 1) { + mnt_reset_iter(self->iter, MNT_ITER_FORWARD); + Py_RETURN_NONE; + } + + if (rc) + return UL_RaiseExc(-rc); + + return PyObjectResultFs(fs); +} + +static PyMethodDef Table_methods[] = { + {"enable_comments", (PyCFunction)Table_enable_comments, METH_VARARGS|METH_KEYWORDS, Table_enable_comments_HELP}, + {"find_pair", (PyCFunction)Table_find_pair, METH_VARARGS|METH_KEYWORDS, Table_find_pair_HELP}, + {"find_source", (PyCFunction)Table_find_source, METH_VARARGS|METH_KEYWORDS, Table_find_source_HELP}, + {"find_srcpath", (PyCFunction)Table_find_srcpath, METH_VARARGS|METH_KEYWORDS, Table_find_srcpath_HELP}, + {"find_tag", (PyCFunction)Table_find_tag, METH_VARARGS|METH_KEYWORDS, Table_find_tag_HELP}, + {"find_target", (PyCFunction)Table_find_target, METH_VARARGS|METH_KEYWORDS, Table_find_target_HELP}, + {"find_devno", (PyCFunction)Table_find_devno, METH_VARARGS|METH_KEYWORDS, Table_find_devno_HELP}, + {"find_mountpoint", (PyCFunction)Table_find_mountpoint, METH_VARARGS|METH_KEYWORDS, Table_find_mountpoint_HELP}, + {"parse_file", (PyCFunction)Table_parse_file, METH_VARARGS|METH_KEYWORDS, Table_parse_file_HELP}, + {"parse_fstab", (PyCFunction)Table_parse_fstab, METH_VARARGS|METH_KEYWORDS, Table_parse_fstab_HELP}, + {"parse_mtab", (PyCFunction)Table_parse_mtab, METH_VARARGS|METH_KEYWORDS, Table_parse_mtab_HELP}, + {"parse_dir", (PyCFunction)Table_parse_dir, METH_VARARGS|METH_KEYWORDS, Table_parse_dir_HELP}, + {"parse_swaps", (PyCFunction)Table_parse_swaps, METH_VARARGS|METH_KEYWORDS, Table_parse_swaps_HELP}, + {"is_fs_mounted", (PyCFunction)Table_is_fs_mounted, METH_VARARGS|METH_KEYWORDS, Table_is_fs_mounted_HELP}, + {"add_fs", (PyCFunction)Table_add_fs, METH_VARARGS|METH_KEYWORDS, Table_add_fs_HELP}, + {"remove_fs", (PyCFunction)Table_remove_fs, METH_VARARGS|METH_KEYWORDS, Table_remove_fs_HELP}, + {"next_fs", (PyCFunction)Table_next_fs, METH_NOARGS, Table_next_fs_HELP}, + {"write_file", (PyCFunction)Table_write_file, METH_VARARGS|METH_KEYWORDS, Table_write_file_HELP}, + {"replace_file", (PyCFunction)Table_replace_file, METH_VARARGS|METH_KEYWORDS, Table_replace_file_HELP}, + {NULL} +}; + +/* mnt_free_tab() with a few necessary additions */ +void Table_unref(struct libmnt_table *tab) +{ + struct libmnt_fs *fs; + struct libmnt_iter *iter; + + if (!tab) + return; + + DBG(TAB, pymnt_debug_h(tab, "un-referencing filesystems")); + + iter = mnt_new_iter(MNT_ITER_BACKWARD); + + /* remove pylibmount specific references to the entries */ + while (mnt_table_next_fs(tab, iter, &fs) == 0) + Py_XDECREF(mnt_fs_get_userdata(fs)); + + DBG(TAB, pymnt_debug_h(tab, "un-referencing table")); + + mnt_unref_table(tab); + mnt_free_iter(iter); +} + +static void Table_destructor(TableObject *self) +{ + DBG(TAB, pymnt_debug_h(self->tab, "destructor py-obj: %p, py-refcnt=%d", + self, (int) ((PyObject *) self)->ob_refcnt)); + Table_unref(self->tab); + self->tab = NULL; + + mnt_free_iter(self->iter); + Py_XDECREF(self->errcb); + PyFree(self); +} + +static PyObject *Table_new(PyTypeObject *type, + PyObject *args __attribute__((unused)), + PyObject *kwds __attribute__((unused))) +{ + TableObject *self = (TableObject*)type->tp_alloc(type, 0); + + if (self) { + DBG(TAB, pymnt_debug_h(self, "new")); + + self->tab = NULL; + self->iter = NULL; + self->errcb = NULL; + } + return (PyObject *)self; +} + +/* explicit tab.__init__() serves as mnt_reset_table(tab) would in C + * and as mnt_new_table{,_from_dir,_from_file}() with proper arguments */ +#define Table_HELP "Table(path=None, errcb=None)" +static int Table_init(TableObject *self, PyObject *args, PyObject *kwds) +{ + struct libmnt_cache *cache; + char *path = NULL; + char *kwlist[] = {"path", "errcb", NULL}; + PyObject *errcb = NULL; + struct stat buf; + + memset (&buf, 0, sizeof(struct stat)); + + if (!PyArg_ParseTupleAndKeywords(args, kwds, "|sO", + kwlist, &path, &errcb)) + return -1; + + DBG(TAB, pymnt_debug_h(self, "init")); + + Table_unref(self->tab); + self->tab = NULL; + + if (self->iter) + mnt_reset_iter(self->iter, MNT_ITER_FORWARD); + else + self->iter = mnt_new_iter(MNT_ITER_FORWARD); + + if (errcb) { + PyObject *tmp; + if (!PyCallable_Check(errcb)) + return -1; + tmp = self->errcb; + Py_INCREF(errcb); + self->errcb = errcb; + Py_XDECREF(tmp); + } else { + Py_XDECREF(self->errcb); + self->errcb = NULL; + } + + if (path) { + DBG(TAB, pymnt_debug_h(self, "init: path defined (%s)", path)); + + if (stat(path, &buf)) { + /* TODO: weird */ + PyErr_SetFromErrno(PyExc_RuntimeError); + return -1; + } + if (S_ISREG(buf.st_mode)) + self->tab = mnt_new_table_from_file(path); + else if (S_ISDIR(buf.st_mode)) + self->tab = mnt_new_table_from_dir(path); + } else { + DBG(TAB, pymnt_debug_h(self, "init: allocate empty table")); + self->tab = mnt_new_table(); + } + + /* Always set custom handler when using libmount from python */ + mnt_table_set_parser_errcb(self->tab, pymnt_table_parser_errcb); + mnt_table_set_userdata(self->tab, self); + + cache = mnt_new_cache(); /* TODO: make it optional? */ + if (!cache) + return -1; + mnt_table_set_cache(self->tab, cache); + mnt_unref_cache(cache); + + return 0; +} + +/* Handler for the tab->errcb callback */ +int pymnt_table_parser_errcb(struct libmnt_table *tb, const char *filename, int line) +{ + int rc = 0; + PyObject *obj; + + obj = mnt_table_get_userdata(tb); + if (obj && ((TableObject*) obj)->errcb) { + PyObject *arglist, *result; + + arglist = Py_BuildValue("(Osi)", obj, filename, line); + if (!arglist) + return -ENOMEM; + + /* A python callback was set, so tb is definitely encapsulated in an object */ + result = PyEval_CallObject(((TableObject *)obj)->errcb, arglist); + Py_DECREF(arglist); + + if (!result) + return -EINVAL; + if (!PyArg_Parse(result, "i", &rc)) + rc = -EINVAL; + Py_DECREF(result); + } + return rc; +} + +PyObject *PyObjectResultTab(struct libmnt_table *tab) +{ + TableObject *result; + + if (!tab) { + PyErr_SetString(LibmountError, "internal exception"); + return NULL; + } + + result = mnt_table_get_userdata(tab); + if (result) { + Py_INCREF(result); + DBG(TAB, pymnt_debug_h(tab, "result py-obj %p: already exists, py-refcnt=%d", + result, (int) ((PyObject *) result)->ob_refcnt)); + return (PyObject *) result; + } + + /* Creating an encapsulating object: increment the refcount, so that + * code such as: cxt.get_fstab() doesn't call the destructor, which + * would free our tab struct as well + */ + result = PyObject_New(TableObject, &TableType); + if (!result) { + UL_RaiseExc(ENOMEM); + return NULL; + } + + Py_INCREF(result); + mnt_ref_table(tab); + + DBG(TAB, pymnt_debug_h(tab, "result py-obj %p new, py-refcnt=%d", + result, (int) ((PyObject *) result)->ob_refcnt)); + result->tab = tab; + result->iter = mnt_new_iter(MNT_ITER_FORWARD); + mnt_table_set_userdata(result->tab, result); + result->errcb = NULL; + return (PyObject *) result; +} + +static PyGetSetDef Table_getseters[] = { + {"nents", (getter)Table_get_nents, NULL, "number of valid entries in tab", NULL}, + {"intro_comment", (getter)Table_get_intro_comment, (setter)Table_set_intro_comment, "fstab intro comment", NULL}, + {"trailing_comment", (getter)Table_get_trailing_comment, (setter)Table_set_trailing_comment, "fstab trailing comment", NULL}, + {"errcb", NULL, (setter)Table_set_parser_errcb, "parser error callback", NULL}, + {NULL} +}; + + +static PyObject *Table_repr(TableObject *self) +{ + return PyUnicode_FromFormat( + "<libmount.Table object at %p, entries=%d, comments_enabled=%s, errcb=%s>", + self, + mnt_table_get_nents(self->tab), + mnt_table_with_comments(self->tab) ? "True" : "False", + self->errcb ? pystos(PyObject_Repr(self->errcb)) : "None"); +} + +PyTypeObject TableType = { + PyVarObject_HEAD_INIT(NULL, 0) + "libmount.Table", /*tp_name*/ + sizeof(TableObject), /*tp_basicsize*/ + 0, /*tp_itemsize*/ + (destructor)Table_destructor, /*tp_dealloc*/ + 0, /*tp_print*/ + NULL, /*tp_getattr*/ + NULL, /*tp_setattr*/ + NULL, /*tp_compare*/ + (reprfunc) Table_repr, /*tp_repr*/ + NULL, /*tp_as_number*/ + NULL, /*tp_as_sequence*/ + NULL, /*tp_as_mapping*/ + NULL, /*tp_hash */ + NULL, /*tp_call*/ + NULL, /*tp_str*/ + NULL, /*tp_getattro*/ + NULL, /*tp_setattro*/ + NULL, /*tp_as_buffer*/ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ + Table_HELP, /* tp_doc */ + NULL, /* tp_traverse */ + NULL, /* tp_clear */ + NULL, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + NULL, /* tp_iter */ + NULL, /* tp_iternext */ + Table_methods, /* tp_methods */ + Table_members, /* tp_members */ + Table_getseters, /* tp_getset */ + NULL, /* tp_base */ + NULL, /* tp_dict */ + NULL, /* tp_descr_get */ + NULL, /* tp_descr_set */ + 0, /* tp_dictoffset */ + (initproc)Table_init, /* tp_init */ + NULL, /* tp_alloc */ + Table_new, /* tp_new */ +}; + +void Table_AddModuleObject(PyObject *mod) +{ + if (PyType_Ready(&TableType) < 0) + return; + + DBG(TAB, pymnt_debug("add to module")); + + Py_INCREF(&TableType); + PyModule_AddObject(mod, "Table", (PyObject *)&TableType); +} + diff --git a/libmount/python/test_mount_context.py b/libmount/python/test_mount_context.py new file mode 100755 index 0000000..7aea444 --- /dev/null +++ b/libmount/python/test_mount_context.py @@ -0,0 +1,173 @@ +import os +import sys +import stat +import errno + +# use "import libmount" for in a standard way installed python binding +import pylibmount as mnt + +def usage(tss): + print("\nUsage:\n\t{:s} <test> [testoptions]\nTests:\n".format(sys.argv[0])) + for i in tss: + print("\t{15:-s}".format(i[0])) + if i[2] != "": + print(" {:s}\n".format(i[2])) + + print("\n") + return 1 + +def mnt_run_test(tss, argv): + rc = -1 + if ((len(argv) < 2) or (argv[1] == "--help") or (argv[1] == "-h")): + return usage(tss) + + #mnt_init_debug(0) + + i=() + for i in tss: + if i[0] == argv[1]: + rc = i[1](i, argv[1:]) + if rc: + print("FAILED [rc={:d}]".format(rc)) + break + + if ((rc < 0) and (i == ())): + return usage(tss) + return not not rc #because !!rc is too mainstream for python + +def test_mount(ts, argv): + idx = 1 + rc = 0 + + if len(argv) < 2: + return -errno.EINVAL + + cxt = mnt.Context() + + if argv[idx] == "-o": + cxt.options = argv[idx+1] + idx += 2 + if argv[idx] == "-t": + cxt.fstype = argv[idx+1] + idx += 2 + if len(argv) == idx + 1: + cxt.target = argv[idx] + idx+=1 + elif (len(argv) == idx + 2): + cxt.source = argv[idx] + idx += 1 + cxt.target = argv[idx] + idx += 1 + + try: + cxt.mount() + except Exception: + print("failed to mount") + return -1 + print("successfully mounted") + return rc + +def test_umount(ts, argv): + idx = 1 + rc = 0 + if len(argv) < 2: + return -errno.EINVAL + + cxt = mnt.Context() + + if argv[idx] == "-t": + cxt.options = argv[idx+1] + idx += 2 + + if argv[idx] == "-f": + cxt.enable_force(True) + + if argv[idx] == "-l": + cxt.enable_lazy(True) + idx += 1 + elif argv[idx] == "-r": + cxt.enable_rdonly_umount(True) + idx += 1 + + if len(argv) == idx + 1: + cxt.target = argv[idx] + idx += 1 + else: + return -errno.EINVAL + try: + cxt.umount() + except Exception: + print("failed to umount") + return 1 + print("successfully umounted") + return rc + +def test_flags(ts, argv): + idx = 1 + rc = 0 + opt = "" + flags = 0 + cxt = mnt.Context() + + if argv[idx] == "-o": + cxt.options = argv[idx + 1] + idx += 2 + if len(argv) == idx + 1: + cxt.target = argv[idx] + idx += 1 + + try: + cxt.prepare_mount() + # catch ioerror here + except IOError as e: + print("failed to prepare mount {:s}".format(e.strerror)) + + opt = cxt.fs.options + if (opt): + print("options: {:s}", opt) + + print("flags: {08:lx}".format(cxt.mflags())) + return rc + +def test_mountall(ts, argv): + mntrc = 1 + ignored = 1 + idx = 1 + cxt = mnt.Context() + + if len(argv) > 2: + if argv[idx] == "-O": + cxt.options_pattern = argv[idx+1] + idx += 2 + if argv[idx] == "-t": + cxt.fstype_pattern = argv[idx+1] + idx += 2 + + i = () + while (cxt.next_mount()): + tgt = i.target + if (ignored == 1): + print("{:s}: ignored: not match".format(tgt)) + elif (ignored == 2): + print("{:s}: ignored: already mounted".format(tgt)) + elif (not cxt.status): + if (mntrc > 0): + # ?? errno = mntrc + print("{:s}: mount failed".format(tgt)) + else: + print("{:s}: mount failed".format(tgt)) + else: + print("{:s}: successfully mounted".format(tgt)) + + return 0 + + +tss = ( + ( "--mount", test_mount, "[-o <opts>] [-t <type>] <spec>|<src> <target>" ), + ( "--umount", test_umount, "[-t <type>] [-f][-l][-r] <src>|<target>" ), + ( "--mount-all", test_mountall, "[-O <pattern>] [-t <pattern] mount all filesystems from fstab" ), + ( "--flags", test_flags, "[-o <opts>] <spec>" ) +) +os.umask(stat.S_IWGRP | stat.S_IWOTH) #to be compatible with mount(8) + +sys.exit(mnt_run_test(tss, sys.argv)) diff --git a/libmount/python/test_mount_tab.py b/libmount/python/test_mount_tab.py new file mode 100755 index 0000000..1f63b95 --- /dev/null +++ b/libmount/python/test_mount_tab.py @@ -0,0 +1,164 @@ +import os +import sys +import stat +import errno +import functools as ft + +# use "import libmount" for in a standard way installed python binding +import pylibmount as mnt + +def usage(tss): + print("\nUsage:\n\t{:s} <test> [testoptions]\nTests:\n".format(sys.argv[0])) + for i in tss: + print("\t{15:-s}".format(i[0])) + if i[2] != "": + print(" {:s}\n".format(i[2])) + + print("\n") + return 1 + +def mnt_run_test(tss, argv): + rc = -1 + if ((len(argv) < 2) or (argv[1] == "--help") or (argv[1] == "-h")): + return usage(tss) + + #mnt_init_debug(0) + + i=() + for i in tss: + if i[0] == argv[1]: + rc = i[1](i, argv[1:]) + if rc: + print("FAILED [rc={:d}]".format(rc)) + break + + if ((rc < 0) and (i == ())): + return usage(tss) + return not not rc #because !!rc is too mainstream for python + +def parser_errcb(tb, fname, line): + print("{:s}:{:d}: parse error".format(fname, line)) + return 1 + +def create_table(f, comments): + if not f: + return None + + tb = mnt.Table() + tb.enable_comments(comments) + tb.errcb = parser_errcb + + try: + tb.parse_file(f) + except Exception: + print("{:s}: parsing failed".format(f)) + return None + return tb + +def test_copy_fs(ts, argv): + rc = -1 + tb = create_table(argv[1], False) + fs = tb.find_target("/", mnt.MNT_ITER_FORWARD) + if not fs: + return rc + + print("ORIGINAL:") + fs.print_debug() + + fs = fs.copy_fs(None) + if not fs: + return rc + print("COPY:") + fs.print_debug() + return 0 + +def test_parse(ts, argv): + parse_comments = False + + if len(argv) == 3 and argv[2] == "--comments": + parse_comments = True + tb = create_table(argv[1], parse_comments) + + if tb.intro_comment: + print("Initial comment:\n\"{:s}\"".format(tb.intro_comment)) + #while ((fs = tb.next_fs()) != None): + for fs in iter(ft.partial(tb.next_fs), None): + fs.print_debug() + if tb.trailing_comment: + print("Trailing comment:\n\"{:s}\"".format(tb.trailing_comment)) + return 0 + +def test_find(ts, argv, dr): + if len(argv) != 4: + print("try --help") + return -errno.EINVAL + + f, find, what = argv[1:] + + tb = create_table(f, False) + if find.lower() == "source": + fs = tb.find_source(what, dr) + elif find.lower() == "target": + fs = tb.find_target(what, dr) + + if not fs: + print("{:s}: not found {:s} '{:s}'".format(f, find, what)) + else: + fs.print_debug() + return 0 + +def test_find_fw(ts, argv): + return test_find(ts, argv, mnt.MNT_ITER_FORWARD) + +def test_find_bw(ts, argv): + return test_find(ts, argv, mnt.MNT_ITER_BACKWARD) + +def test_find_pair(ts, argv): + rc = -1 + tb = create_table(argv[1], False) + fs = tb.find_pair(argv[2], argv[3], mnt.MNT_ITER_FORWARD) + if not fs: + return rc + fs.print_debug() + return 0 + +def test_is_mounted(ts, argv): + rc = -1 + tb = mnt.Tab(path="/proc/self/mountinfo") + if not tb: + print("failed to parse mountinto") + return rc + + fstab = create_table(argv[1], False) + if not fstab: + return rc + fs = () + for fs in ft.iter(tb.next_fs(), -1): + if tb.is_fs_mounted(fs): + print("{:s} already mounted on {:s}".format(fs.source, fs.target)) + else: + print("{:s} not mounted on {:s}".format(fs.source, fs.target)) + return 0 + +def test_find_mountpoint(ts, argv): + rc = -1 + tb = mnt.Table("/proc/self/mountinfo") + if not tb: + return rc + fs = tb.find_mountpoint(argv[1], mnt.MNT_ITER_BACKWARD) + if not fs: + return rc + fs.print_debug() + return 0 + + +tss = ( + ( "--parse", test_parse, "<file> [--comments] parse and print(tab" ), + ( "--find-forward", test_find_fw, "<file> <source|target> <string>" ), + ( "--find-backward", test_find_bw, "<file> <source|target> <string>" ), + ( "--find-pair", test_find_pair, "<file> <source> <target>" ), + ( "--find-mountpoint", test_find_mountpoint, "<path>" ), + ( "--copy-fs", test_copy_fs, "<file> copy root FS from the file" ), + ( "--is-mounted", test_is_mounted, "<fstab> check what from <file> are already mounted" ), +) +sys.exit(mnt_run_test(tss, sys.argv)) diff --git a/libmount/python/test_mount_tab_update.py b/libmount/python/test_mount_tab_update.py new file mode 100755 index 0000000..a16e9e3 --- /dev/null +++ b/libmount/python/test_mount_tab_update.py @@ -0,0 +1,59 @@ +import os +import sys +import stat +import errno + +# use "import libmount" for in a standard way installed python binding +import pylibmount as mnt + +def usage(tss): + print("\nUsage:\n\t{:s} <test> [testoptions]\nTests:\n".format(sys.argv[0])) + for i in tss: + print("\t{15:-s}".format(i[0])) + if i[2] != "": + print(" {:s}\n".format(i[2])) + + print("\n") + return 1 + +def mnt_run_test(tss, argv): + rc = -1 + if ((len(argv) < 2) or (argv[1] == "--help") or (argv[1] == "-h")): + return usage(tss) + + #mnt_init_debug(0) + + i=() + for i in tss: + if i[0] == argv[1]: + rc = i[1](i, argv[1:]) + if rc: + print("FAILED [rc={:d}]".format(rc)) + break + + if ((rc < 0) and (i == ())): + return usage(tss) + return not not rc #because !!rc is too mainstream for python + +def test_replace(ts, argv): + fs = mnt.Fs() + tb = mnt.Table() + + if (len(argv) < 3): + return -1 + tb.enable_comments(True) + tb.parse_fstab() + + fs.source = argv[1] + fs.target = argv[2] + #TODO: resolve None + string + fs.comment = "# this is new filesystem\n" + tb.add_fs(fs) + tb.replace_file(os.environ["LIBMOUNT_FSTAB"]) + return 0 + +tss = ( + ( "--replace",test_replace, "<src> <target> Add a line to LIBMOUNT_FSTAB and replace the original file" ), +) + +sys.exit(mnt_run_test(tss, sys.argv)) |