static void
copyxattr(const char *source, const char *target)
{
ssize_t i, j; /* counters to walk through strings */
ssize_t lsize, xsize; /* size in bytes of the list of xattrs and the values */
char *lxattr; /* string of xattr names */
static char *value = NULL ; /* string of an xattr name's value */
static size_t value_size = 0; /* size of the value string */
lsize = xlistxattr(source, NULL, 0);
lxattr = xmalloc(lsize);
xlistxattr(source, lxattr, lsize);
i = 0;
while (1) {
while (lxattr[i++] == 0)
continue;
if (i >= lsize)
break;
j = 0;
while (1) {
while (exclude[j++] == 0)
continue;
if (j >= len_exclude)
break;
if (!fnmatch(&exclude[j - 1], &lxattr[i - 1], 0))
goto skip;
while (exclude[j++] != 0)
continue;
if (j >= len_exclude)
break;
}
xsize = xgetxattr(source, &lxattr[i-1], 0, 0);
if (xsize > value_size) {
value_size = xsize;
value = xrealloc(value, value_size);
}
xgetxattr(source, &lxattr[i-1], value, xsize);
xsetxattr(target, &lxattr[i-1], value, xsize);
skip:
while (lxattr[i++] != 0)
continue;
if (i >= lsize)
break;
}
/* No need to free(value) on return because its static and we */
/* just keep reusing the same allocated memory on each call. */
free(lxattr);
}
static int
bin_setattr(char *nam, char **argv, Options ops, UNUSED(int func))
{
int ret = 0, slen, vlen;
int symlink = OPT_ISSET(ops, 'h');
char *file = argv[0], *attr = argv[1], *value = argv[2];
unmetafy(file, &slen);
unmetafy(attr, NULL);
unmetafy(value, &vlen);
if (xsetxattr(file, attr, value, vlen, 0, symlink)) {
zwarnnam(nam, "%s: %e", metafy(file, slen, META_NOALLOC), errno);
ret = 1;
}
return ret;
}
