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/*
* attr.c - extended attributes (xattr) manipulation
*
* This file is part of zsh, the Z shell.
*
* Copyright (c) 2009 Mikael Magnusson
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and to distribute modified versions of this software for any
* purpose, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* In no event shall Mikael Magnusson or the Zsh Development Group be liable
* to any party for direct, indirect, special, incidental, or consequential
* damages arising out of the use of this software and its documentation,
* even if Andrew Main and the Zsh Development Group have been advised of
* the possibility of such damage.
*
* Mikael Magnusson and the Zsh Development Group specifically disclaim any
* warranties, including, but not limited to, the implied warranties of
* merchantability and fitness for a particular purpose. The software
* provided hereunder is on an "as is" basis, and Mikael Magnusson and the
* Zsh Development Group have no obligation to provide maintenance,
* support, updates, enhancements, or modifications.
*
*/
#include "attr.mdh"
#include "attr.pro"
#include <sys/types.h>
#include <sys/xattr.h>
static int
bin_getattr(char *nam, char **argv, UNUSED(Options ops), UNUSED(int func))
{
int ret = 0;
int len, slen;
char value[256];
unmetafy(*argv, &slen);
unmetafy(*(argv+1), NULL);
if (listxattr(*argv, NULL, 0
#ifdef XATTR_EXTRA_ARGS
, 0
#endif
) > 0) {
if (0 < (len = getxattr(*argv, *(argv+1), value, 255
#ifdef XATTR_EXTRA_ARGS
, 0, 0
#endif
))) {
if (len < 256) {
value[len] = '\0';
if (*(argv+2))
setsparam(*(argv+2), metafy(value, len, META_DUP));
else
printf("%s\n", value);
}
} else if (len < 0) {
zwarnnam(nam, "%s: %e", metafy(*argv, slen, META_NOALLOC), errno);
ret = 1;
}
}
return ret;
}
static int
bin_setattr(char *nam, char **argv, UNUSED(Options ops), UNUSED(int func))
{
int ret = 0, slen;
unmetafy(*argv, &slen);
unmetafy(*(argv+1), NULL);
unmetafy(*(argv+2), NULL);
if (setxattr(*argv, *(argv+1), *(argv+2), strlen(*(argv+2)), 0
#ifdef XATTR_EXTRA_ARGS
, 0
#endif
)) {
zwarnnam(nam, "%s: %e", metafy(*argv, slen, META_NOALLOC), errno);
ret = 1;
}
return ret;
}
static int
bin_delattr(char *nam, char **argv, UNUSED(Options ops), UNUSED(int func))
{
int ret = 0, slen;
unmetafy(*argv, &slen);
unmetafy(*(argv+1), NULL);
if (removexattr(*argv, *(argv+1)
#ifdef XATTR_EXTRA_ARGS
, 0
#endif
)) {
zwarnnam(nam, "%s: %e", metafy(*argv, slen, META_NOALLOC), errno);
ret = 1;
}
return ret;
}
static int
bin_listattr(char *nam, char **argv, UNUSED(Options ops), UNUSED(int func))
{
int ret = 0;
int len, slen;
char value[256];
unmetafy(*argv, &slen);
if (0 < (len = listxattr(*argv, value, 256
#ifdef XATTR_EXTRA_ARGS
, 0
#endif
))) {
if (len < 256) {
char *p = value;
if (*(argv+1))
setsparam(*(argv+1), metafy(value, len, META_DUP));
else while (p < &value[len]) {
printf("%s\n", p);
p += strlen(p) + 1;
}
}
} else if (len < 0) {
zwarnnam(nam, "%s: %e", metafy(*argv, slen, META_NOALLOC), errno);
ret = 1;
}
return ret;
}
/* module paraphernalia */
static struct builtin bintab[] = {
BUILTIN("zgetattr", 0, bin_getattr, 2, 3, 0, NULL, NULL),
BUILTIN("zsetattr", 0, bin_setattr, 3, 3, 0, NULL, NULL),
BUILTIN("zdelattr", 0, bin_delattr, 2, 2, 0, NULL, NULL),
BUILTIN("zlistattr", 0, bin_listattr, 1, 2, 0, NULL, NULL),
};
static struct features module_features = {
bintab, sizeof(bintab)/sizeof(*bintab),
NULL, 0,
NULL, 0,
NULL, 0,
0
};
/**/
int
setup_(UNUSED(Module m))
{
return 0;
}
/**/
int
features_(Module m, char ***features)
{
*features = featuresarray(m, &module_features);
return 0;
}
/**/
int
enables_(Module m, int **enables)
{
return handlefeatures(m, &module_features, enables);
}
/**/
int
boot_(UNUSED(Module m))
{
return 0;
}
/**/
int
cleanup_(Module m)
{
return setfeatureenables(m, &module_features, NULL);
}
/**/
int
finish_(UNUSED(Module m))
{
return 0;
}
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