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Added support for OS X's slightly different xattr calls. #9

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merged 1 commit into from May 1, 2016
Merged

Added support for OS X's slightly different xattr calls. #9

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6 changes: 5 additions & 1 deletion setup.py
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@@ -1,6 +1,7 @@
#!/usr/bin/python

import distutils
import platform
try:
from setuptools import setup, Extension
except ImportError:
Expand All @@ -12,6 +13,9 @@
version = "0.5.6"
author = "Iustin Pop"
author_email = "iustin@k1024.org"
libraries = []
if platform.system() == 'Linux':
libraries.append("attr")
macros = [
("_XATTR_VERSION", '"%s"' % version),
("_XATTR_AUTHOR", '"%s"' % author),
Expand All @@ -27,7 +31,7 @@
download_url = "http://pyxattr.k1024.org/downloads/",
license = "LGPL",
ext_modules = [Extension("xattr", ["xattr.c"],
libraries=["attr"],
libraries=libraries,
define_macros=macros,
extra_compile_args=["-Wall", "-Werror", "-Wsign-compare"],
)],
Expand Down
8 changes: 4 additions & 4 deletions test/test_xattr.py
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Expand Up @@ -109,9 +109,9 @@ def _checkDeprecated(self, item, symlink=False):
xattr.setxattr(item, self.USER_ATTR, self.USER_VAL, 0, symlink)
except IOError:
err = sys.exc_info()[1]
if err.errno == errno.EPERM and symlink:
if symlink and (err.errno == errno.EPERM or err.errno == errno.ENOENT):
# symlinks may fail, in which case we abort the rest
# of the test for this case
# of the test for this case (Linux returns EPERM; OS X returns ENOENT)
return
raise
self.assertRaises(EnvironmentError, xattr.setxattr, item,
Expand Down Expand Up @@ -146,9 +146,9 @@ def _checkListSetGet(self, item, symlink=False, use_ns=False):
nofollow=symlink)
except IOError:
err = sys.exc_info()[1]
if err.errno == errno.EPERM and symlink:
if symlink and (err.errno == errno.EPERM or err.errno == errno.ENOENT):
# symlinks may fail, in which case we abort the rest
# of the test for this case
# of the test for this case (Linux returns EPERM; OS X returns ENOENT)
return
raise
self.assertRaises(EnvironmentError, xattr.set, item,
Expand Down
89 changes: 77 additions & 12 deletions xattr.c
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Expand Up @@ -23,7 +23,11 @@

#define PY_SSIZE_T_CLEAN
#include <Python.h>
#if defined(__APPLE__)
#include <sys/xattr.h>
#elif defined(__linux__)
#include <attr/xattr.h>
#endif
#include <stdio.h>

/* Compatibility with python 2.4 regarding python size type (PEP 353) */
Expand Down Expand Up @@ -196,42 +200,103 @@ static int merge_ns(const char *ns, const char *name,
return 0;
}

#if defined(__APPLE__)
static inline ssize_t _listxattr(const char *path, char *namebuf, size_t size) {
return listxattr(path, namebuf, size, 0);
}
static inline ssize_t _llistxattr(const char *path, char *namebuf, size_t size) {
return listxattr(path, namebuf, size, XATTR_NOFOLLOW);
}
static inline ssize_t _flistxattr(int fd, char *namebuf, size_t size) {
return flistxattr(fd, namebuf, size, 0);
}

static inline ssize_t _getxattr (const char *path, const char *name, void *value, size_t size) {
return getxattr(path, name, value, size, 0, 0);
}
static inline ssize_t _lgetxattr (const char *path, const char *name, void *value, size_t size) {
return getxattr(path, name, value, size, 0, XATTR_NOFOLLOW);
}
static inline ssize_t _fgetxattr (int filedes, const char *name, void *value, size_t size) {
return fgetxattr(filedes, name, value, size, 0, 0);
}

// [fl]setxattr: Both OS X and Linux define XATTR_CREATE and XATTR_REPLACE for the last option.
static inline int _setxattr(const char *path, const char *name, const void *value, size_t size, int flags) {
return setxattr(path, name, value, size, 0, flags);
}
static inline int _lsetxattr(const char *path, const char *name, const void *value, size_t size, int flags) {
return setxattr(path, name, value, size, 0, flags & XATTR_NOFOLLOW);
}
static inline int _fsetxattr(int filedes, const char *name, const void *value, size_t size, int flags) {
return fsetxattr(filedes, name, value, size, 0, flags);
}

static inline int _removexattr(const char *path, const char *name) {
return removexattr(path, name, 0);
}
static inline int _lremovexattr(const char *path, const char *name) {
return removexattr(path, name, XATTR_NOFOLLOW);
}
static inline int _fremovexattr(int filedes, const char *name) {
return fremovexattr(filedes, name, 0);
}

#elif defined(__linux__)
#define _listxattr(path, list, size) listxattr(path, list, size)
#define _llistxattr(path, list, size) llistxattr(path, list, size)
#define _flistxattr(fd, list, size) flistxattr(fd, list, size)

#define _getxattr(path, name, value, size) getxattr(path, name, value, size)
#define _lgetxattr(path, name, value, size) lgetxattr(path, name, value, size)
#define _fgetxattr(fd, name, value, size) fgetxattr(fd, name, value, size)

#define _setxattr(path, name, value, size, flags) setxattr(path, name, value, size, flags)
#define _lsetxattr(path, name, value, size, flags) lsetxattr(path, name, value, size, flags)
#define _fsetxattr(fd, name, value, size, flags) fsetxattr(fd, name, value, size, flags)

#define _removexattr(path, name) removexattr(path, name)
#define _lremovexattr(path, name) lremovexattr(path, name)
#define _fremovexattr(fd, name) fremovexattr(fd, name)

#endif

static ssize_t _list_obj(target_t *tgt, char *list, size_t size) {
if(tgt->type == T_FD)
return flistxattr(tgt->fd, list, size);
return _flistxattr(tgt->fd, list, size);
else if (tgt->type == T_LINK)
return llistxattr(tgt->name, list, size);
return _llistxattr(tgt->name, list, size);
else
return listxattr(tgt->name, list, size);
return _listxattr(tgt->name, list, size);
}

static ssize_t _get_obj(target_t *tgt, const char *name, void *value,
size_t size) {
if(tgt->type == T_FD)
return fgetxattr(tgt->fd, name, value, size);
return _fgetxattr(tgt->fd, name, value, size);
else if (tgt->type == T_LINK)
return lgetxattr(tgt->name, name, value, size);
return _lgetxattr(tgt->name, name, value, size);
else
return getxattr(tgt->name, name, value, size);
return _getxattr(tgt->name, name, value, size);
}

static int _set_obj(target_t *tgt, const char *name,
const void *value, size_t size, int flags) {
if(tgt->type == T_FD)
return fsetxattr(tgt->fd, name, value, size, flags);
return _fsetxattr(tgt->fd, name, value, size, flags);
else if (tgt->type == T_LINK)
return lsetxattr(tgt->name, name, value, size, flags);
return _lsetxattr(tgt->name, name, value, size, flags);
else
return setxattr(tgt->name, name, value, size, flags);
return _setxattr(tgt->name, name, value, size, flags);
}

static int _remove_obj(target_t *tgt, const char *name) {
if(tgt->type == T_FD)
return fremovexattr(tgt->fd, name);
return _fremovexattr(tgt->fd, name);
else if (tgt->type == T_LINK)
return lremovexattr(tgt->name, name);
return _lremovexattr(tgt->name, name);
else
return removexattr(tgt->name, name);
return _removexattr(tgt->name, name);
}

/*
Expand Down