int sys_lsetxattr (const char *path, const char *uname, const void *value, size_t size, int flags)
{
const char *name = prefix(uname);
#if defined(HAVE_LSETXATTR)
return lsetxattr(path, name, value, size, flags);
#elif defined(HAVE_SETXATTR) && defined(XATTR_ADD_OPT)
int options = XATTR_NOFOLLOW;
return setxattr(path, name, value, size, 0, options);
#elif defined(LSETEA)
return lsetea(path, name, value, size, flags);
#elif defined(HAVE_EXTATTR_SET_LINK)
int retval = 0;
if (flags) {
/* Check attribute existence */
retval = extattr_get_link(path, EXTATTR_NAMESPACE_USER, uname, NULL, 0);
if (retval < 0) {
/* REPLACE attribute, that doesn't exist */
if (flags & XATTR_REPLACE && errno == ENOATTR) {
errno = ENOATTR;
return -1;
}
/* Ignore other errors */
}
else {
/* CREATE attribute, that already exists */
if (flags & XATTR_CREATE) {
errno = EEXIST;
return -1;
}
}
}
retval = extattr_set_link(path, EXTATTR_NAMESPACE_USER, uname, value, size);
return (retval < 0) ? -1 : 0;
#elif defined(HAVE_ATTR_SET)
int myflags = ATTR_DONTFOLLOW;
char *attrname = strchr(name,'.') + 1;
if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
return attr_set(path, attrname, (const char *)value, size, myflags);
#elif defined(HAVE_ATTROPEN)
int ret = -1;
int myflags = O_RDWR | AT_SYMLINK_NOFOLLOW;
int attrfd;
if (flags & XATTR_CREATE) myflags |= O_EXCL;
if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
if (attrfd >= 0) {
ret = solaris_write_xattr(attrfd, value, size);
close(attrfd);
}
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}
/*
* Set attributes for a symbolic link.
*/
static void
set_extattr_link(char *name, void *buf, int size)
{
struct extattr *eap, *eaend;
vprintf(stdout, "Set attributes for %s:", name);
eaend = buf + size;
for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) {
/*
* Make sure this entry is complete.
*/
if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) {
dprintf(stdout, "\n\t%scorrupted",
eap == buf ? "" : "remainder ");
break;
}
if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY)
continue;
vprintf(stdout, "\n\t%s, (%d bytes), %*s",
namespace_names[eap->ea_namespace], eap->ea_length,
eap->ea_namelength, eap->ea_name);
/*
* First we try the general attribute setting interface.
* However, some attributes can only be set by root or
* by using special interfaces (for example, ACLs).
*/
if (extattr_set_link(name, eap->ea_namespace, eap->ea_name,
EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) {
dprintf(stdout, " (set using extattr_set_link)");
continue;
}
/*
* If the general interface refuses to set the attribute,
* then we try all the specialized interfaces that we
* know about.
*/
if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
!strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) {
if (acl_set_link_np(name, ACL_TYPE_ACCESS,
EXTATTR_CONTENT(eap)) != -1) {
dprintf(stdout, " (set using acl_set_link_np)");
continue;
}
}
if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
!strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) {
if (acl_set_link_np(name, ACL_TYPE_DEFAULT,
EXTATTR_CONTENT(eap)) != -1) {
dprintf(stdout, " (set using acl_set_link_np)");
continue;
}
}
vprintf(stdout, " (unable to set)");
}
vprintf(stdout, "\n");
}
static ssize_t xattr_setxattr(const char *path, const char *name,
void *value, ssize_t size, u_int32_t position,
int options)
{
int rv = 0;
int nofollow;
if (position != 0) {
return -1;
}
nofollow = options & XATTR_XATTR_NOFOLLOW;
options &= ~XATTR_XATTR_NOFOLLOW;
if (options == XATTR_XATTR_CREATE ||
options == XATTR_XATTR_REPLACE) {
/* meh. FreeBSD doesn't really have this in its
* API... Oh well.
*/
}
else if (options != 0) {
return -1;
}
if (nofollow) {
rv = extattr_set_link(path, EXTATTR_NAMESPACE_USER,
name, value, size);
}
else {
rv = extattr_set_file(path, EXTATTR_NAMESPACE_USER,
name, value, size);
}
/* freebsd returns the written length on success, not zero. */
if (rv >= 0) {
return 0;
}
else {
return rv;
}
}
static PyObject *
lsetxattr_wrapper(PyObject *self, PyObject *args)
{
const char *filename;
const char *name;
const char *value;
int size;
int ret;
if (!PyArg_ParseTuple(args, "sss#", &filename, &name, &value, &size))
return NULL;
#ifdef __FreeBSD__
ret = extattr_set_link(filename, EXTATTR_NAMESPACE_USER, name, value, size);
#else
ret = lsetxattr(filename, name, value, size, 0);
#endif
if (ret == -1)
ret = errno;
return Py_BuildValue("i", ret);
}
int
main(int argc, char *argv[])
{
char *buf, *visbuf, *p;
const char *options, *attrname;
size_t len;
ssize_t ret;
int buflen, visbuflen, ch, error, i, arg_counter, attrnamespace,
minargc;
int flag_force = 0;
int flag_nofollow = 0;
int flag_null = 0;
int flag_quiet = 0;
int flag_string = 0;
int flag_hex = 0;
visbuflen = buflen = 0;
visbuf = buf = NULL;
p = basename(argv[0]);
if (p == NULL)
p = argv[0];
if (!strcmp(p, "getextattr")) {
what = EAGET;
options = "fhqsx";
minargc = 3;
} else if (!strcmp(p, "setextattr")) {
what = EASET;
options = "fhnq";
minargc = 4;
} else if (!strcmp(p, "rmextattr")) {
what = EARM;
options = "fhq";
minargc = 3;
} else if (!strcmp(p, "lsextattr")) {
what = EALS;
options = "fhq";
minargc = 2;
} else {
usage();
}
while ((ch = getopt(argc, argv, options)) != -1) {
switch (ch) {
case 'f':
flag_force = 1;
break;
case 'h':
flag_nofollow = 1;
break;
case 'n':
flag_null = 1;
break;
case 'q':
flag_quiet = 1;
break;
case 's':
flag_string = 1;
break;
case 'x':
flag_hex = 1;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc < minargc)
usage();
error = extattr_string_to_namespace(argv[0], &attrnamespace);
if (error)
err(-1, "%s", argv[0]);
argc--; argv++;
if (what != EALS) {
attrname = argv[0];
argc--; argv++;
} else
attrname = NULL;
if (what == EASET) {
mkbuf(&buf, &buflen, strlen(argv[0]) + 1);
strcpy(buf, argv[0]);
argc--; argv++;
}
for (arg_counter = 0; arg_counter < argc; arg_counter++) {
switch (what) {
case EARM:
if (flag_nofollow)
error = extattr_delete_link(argv[arg_counter],
attrnamespace, attrname);
else
error = extattr_delete_file(argv[arg_counter],
attrnamespace, attrname);
if (error >= 0)
continue;
break;
case EASET:
len = strlen(buf) + flag_null;
if (flag_nofollow)
ret = extattr_set_link(argv[arg_counter],
attrnamespace, attrname, buf, len);
else
ret = extattr_set_file(argv[arg_counter],
attrnamespace, attrname, buf, len);
if (ret >= 0) {
if ((size_t)ret != len && !flag_quiet) {
warnx("Set %zd bytes of %zu for %s",
ret, len, attrname);
}
continue;
}
break;
case EALS:
if (flag_nofollow)
ret = extattr_list_link(argv[arg_counter],
attrnamespace, NULL, 0);
else
ret = extattr_list_file(argv[arg_counter],
attrnamespace, NULL, 0);
if (ret < 0)
break;
mkbuf(&buf, &buflen, ret);
if (flag_nofollow)
ret = extattr_list_link(argv[arg_counter],
attrnamespace, buf, buflen);
else
ret = extattr_list_file(argv[arg_counter],
attrnamespace, buf, buflen);
if (ret < 0)
break;
if (!flag_quiet)
printf("%s\t", argv[arg_counter]);
for (i = 0; i < ret; i += ch + 1) {
/* The attribute name length is unsigned. */
ch = (unsigned char)buf[i];
printf("%s%*.*s", i ? "\t" : "",
ch, ch, buf + i + 1);
}
if (!flag_quiet || ret > 0)
printf("\n");
continue;
case EAGET:
if (flag_nofollow)
ret = extattr_get_link(argv[arg_counter],
attrnamespace, attrname, NULL, 0);
else
ret = extattr_get_file(argv[arg_counter],
attrnamespace, attrname, NULL, 0);
if (ret < 0)
break;
mkbuf(&buf, &buflen, ret);
if (flag_nofollow)
ret = extattr_get_link(argv[arg_counter],
attrnamespace, attrname, buf, buflen);
else
ret = extattr_get_file(argv[arg_counter],
attrnamespace, attrname, buf, buflen);
if (ret < 0)
break;
if (!flag_quiet)
printf("%s\t", argv[arg_counter]);
if (flag_string) {
mkbuf(&visbuf, &visbuflen, ret * 4 + 1);
strvisx(visbuf, buf, ret,
VIS_SAFE | VIS_WHITE);
printf("\"%s\"\n", visbuf);
continue;
} else if (flag_hex) {
for (i = 0; i < ret; i++)
printf("%s%02x", i ? " " : "",
buf[i]);
printf("\n");
continue;
} else {
fwrite(buf, ret, 1, stdout);
printf("\n");
continue;
}
default:
break;
}
if (!flag_quiet)
warn("%s: failed", argv[arg_counter]);
if (flag_force)
continue;
return(1);
}
return (0);
}
int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size)
{
return extattr_set_link(path, EXTATTR_NAMESPACE_USER, name, value, size);
}
static int do_set_xattr_bsd(struct asfd *asfd,
const char *path,
const char *xattrtext, size_t xlen, struct cntr *cntr)
{
int ret=-1;
size_t l=0;
char *data=NULL;
char *value=NULL;
char *nspace=NULL;
data=(char *)xattrtext;
l=xlen;
while(l>0)
{
ssize_t cnt;
ssize_t vlen=0;
int cnspace=0;
char *name=NULL;
if(!(nspace=get_next_xattr_str(asfd, &data, &l,
cntr, &vlen, path))
|| !(value=get_next_xattr_str(asfd, &data, &l,
cntr, &vlen, path)))
goto end;
// Need to split the name into two parts.
if(!(name=strchr(nspace, '.')))
{
logw(asfd, cntr,
"could not split %s into namespace and name on %s\n",
nspace, path);
goto end;
}
*name='\0';
name++;
if(extattr_string_to_namespace(nspace, &cnspace))
{
logw(asfd, cntr,
"could not convert %s into namespace on %s\n",
nspace, path);
goto end;
}
//printf("set_link: %d %s %s %s\n", cnspace, nspace, name, value);
if((cnt=extattr_set_link(path,
cnspace, name, value, vlen))!=vlen)
{
logw(asfd, cntr,
"extattr_set_link error on %s %zd!=%zd: %s\n",
path, cnt, vlen, strerror(errno));
goto end;
}
free_w(&nspace);
free_w(&value);
}
ret=0;
end:
free_w(&nspace);
free_w(&value);
return ret;
}
/* Bring the given attributes and/or ACLs into effect with the given file.
@param flag Bitfield for control purposes
bit0= decode and set ACLs
bit1= first clear all existing attributes of the file
bit2= do not set attributes other than ACLs
bit3= do not ignore eventual non-user attributes.
I.e. those with a name which does not begin
by "user."
bit5= in case of symbolic link: manipulate link target
bit6= tolerate inappropriate presence or absence of
directory default ACL
@return 1 success
-1 error memory allocation
-2 error with decoding of ACL
-3 error with setting ACL
-4 error with setting attribute
-5 error with deleting attributes
-6 support of xattr not enabled at compile time
-7 support of ACL not enabled at compile time
-8 unsupported xattr namespace
ISO_AAIP_ACL_MULT_OBJ multiple entries of user::, group::, other::
*/
int aaip_set_attr_list(char *path, size_t num_attrs, char **names,
size_t *value_lengths, char **values, int flag)
{
int ret, has_default_acl= 0;
size_t i, consumed, acl_text_fill, acl_idx= 0;
char *acl_text= NULL;
#ifdef Libisofs_with_freebsd_extattR
char *user_list= NULL, *sys_list= NULL, *namept;
ssize_t user_list_size= 0, sys_list_size= 0;
int attrnamespace;
#endif
#ifdef Libisofs_with_freebsd_extattR
if(flag & 2) { /* Delete all file attributes */
ret= aaip_extattr_make_list(path, EXTATTR_NAMESPACE_USER,
&user_list, &user_list_size, flag & 32);
if(ret <= 0)
{ret= -1; goto ex;}
ret= aaip_extattr_delete_names(path, EXTATTR_NAMESPACE_USER,
user_list, user_list_size, flag & 32);
if(ret <= 0)
{ret= -5; goto ex;}
if(flag & 8) {
ret= aaip_extattr_make_list(path, EXTATTR_NAMESPACE_SYSTEM,
&sys_list, &sys_list_size, flag & 32);
if(ret <= 0)
{ret= -5; goto ex;}
ret= aaip_extattr_delete_names(path, EXTATTR_NAMESPACE_SYSTEM,
sys_list, sys_list_size, flag & 32);
if(ret <= 0)
{ret= -5; goto ex;}
}
}
#endif /* Libisofs_with_freebsd_extattR */
for(i= 0; i < num_attrs; i++) {
if(names[i] == NULL || values[i] == NULL)
continue;
if(names[i][0] == 0) { /* ACLs */
if(flag & 1)
acl_idx= i + 1;
continue;
}
/* Extended Attribute */
if(flag & 4)
continue;
#ifdef Libisofs_with_freebsd_extattR
if(strncmp(names[i], "user.", 5) == 0) {
attrnamespace= EXTATTR_NAMESPACE_USER;
namept= names[i] + 5;
} else if(strncmp(names[i], "isofs.", 6) == 0 || !(flag & 8)) {
continue;
} else if(strncmp(names[i], "system.", 7) == 0) {
attrnamespace= EXTATTR_NAMESPACE_SYSTEM;
namept= names[i] + 7;
} else {
{ret= -8; goto ex;}
}
if(flag & 32)
ret= extattr_set_file(path, attrnamespace, namept,
values[i], value_lengths[i]);
else
ret= extattr_set_link(path, attrnamespace, namept,
values[i], value_lengths[i]);
if(ret == -1)
{ret= -4; goto ex;}
#else
if(strncmp(names[i], "user.", 5) == 0)
;
else if(strncmp(names[i], "isofs.", 6) == 0 || !(flag & 8))
continue;
{ret= -6; goto ex;}
#endif /* Libisofs_with_freebsd_extattR */
}
/* Decode ACLs */
if(acl_idx == 0)
{ret= 1; goto ex;}
i= acl_idx - 1;
ret= aaip_decode_acl((unsigned char *) values[i], value_lengths[i],
&consumed, NULL, 0, &acl_text_fill, 1);
if(ret < -3)
goto ex;
if(ret <= 0)
{ret= -2; goto ex;}
acl_text= calloc(acl_text_fill, 1);
if(acl_text == NULL)
{ret= -1; goto ex;}
ret= aaip_decode_acl((unsigned char *) values[i], value_lengths[i],
&consumed, acl_text, acl_text_fill, &acl_text_fill, 0);
if(ret < -3)
goto ex;
if(ret <= 0)
{ret= -2; goto ex;}
has_default_acl= (ret == 2);
#ifdef Libisofs_with_aaip_acL
ret= aaip_set_acl_text(path, acl_text, flag & (32 | 64));
if(ret <= 0)
{ret= -3; goto ex;}
#else
{ret= -7; goto ex;}
#endif
if(has_default_acl && !(flag & 64))
{ret= -3; goto ex;}
ret= 1;
ex:;
if(acl_text != NULL)
free(acl_text);
#ifdef Libisofs_with_freebsd_extattR
if(user_list != NULL)
free(user_list);
if(sys_list != NULL)
free(sys_list);
#endif /* Libisofs_with_freebsd_extattR */
return(ret);
}
