/*
* Function: sys_list_eas
*
* Purpose: copy names of native EAs into attrnamebuf
*
* Arguments:
*
* vol (r) current volume
* attrnamebuf (w) store names a consecutive C strings here
* buflen (rw) length of names in attrnamebuf
* uname (r) filename
* oflag (r) link and create flag
*
* Returns: AFP code: AFP_OK on success or appropiate AFP error code
*
* Effects:
*
* Copies names of all EAs of uname as consecutive C strings into rbuf.
* Increments *rbuflen accordingly.
* We hide the adouble:ea extended attributes here, but we currently
* allow reading, writing and deleteting them.
*/
int sys_list_eas(VFS_FUNC_ARGS_EA_LIST)
{
ssize_t attrbuflen = *buflen;
int ret, len, nlen;
char *buf;
char *ptr;
struct adouble ad, *adp;
buf = malloc(ATTRNAMEBUFSIZ);
if (!buf)
return AFPERR_MISC;
/* PBaranski fix */
if ( fd != -1) {
LOG(log_debug, logtype_afpd, "sys_list_eas(%s): file is already opened", uname);
ret = sys_flistxattr(fd, uname, buf, ATTRNAMEBUFSIZ);
} else {
if ((oflag & O_NOFOLLOW)) {
ret = sys_llistxattr(uname, buf, ATTRNAMEBUFSIZ);
}
else {
ret = sys_listxattr(uname, buf, ATTRNAMEBUFSIZ);
}
}
/* PBaranski fix */
if (ret == -1) switch(errno) {
case OPEN_NOFOLLOW_ERRNO:
/* its a symlink and client requested O_NOFOLLOW, we pretend 0 EAs */
LOG(log_debug, logtype_afpd, "sys_list_extattr(%s): symlink with kXAttrNoFollow", uname);
ret = AFP_OK;
goto exit;
default:
LOG(log_debug, logtype_afpd, "sys_list_extattr(%s): error opening atttribute dir: %s", uname, strerror(errno));
ret = AFPERR_MISC;
goto exit;
}
ptr = buf;
while (ret > 0) {
len = strlen(ptr);
if (NOT_NETATALK_EA(ptr)) {
/* Convert name to CH_UTF8_MAC and directly store in in the reply buffer */
if ( 0 >= ( nlen = convert_string(vol->v_volcharset, CH_UTF8_MAC, ptr, len, attrnamebuf + attrbuflen, 256)) ) {
ret = AFPERR_MISC;
goto exit;
}
LOG(log_debug7, logtype_afpd, "sys_list_extattr(%s): attribute: %s", uname, ptr);
attrbuflen += nlen + 1;
if (attrbuflen > (ATTRNAMEBUFSIZ - 256)) {
/* Next EA name could overflow, so bail out with error.
FIXME: evantually malloc/memcpy/realloc whatever.
Is it worth it ? */
LOG(log_warning, logtype_afpd, "sys_list_extattr(%s): running out of buffer for EA names", uname);
ret = AFPERR_MISC;
goto exit;
}
}
ret -= len + 1;
ptr += len + 1;
}
ret = AFP_OK;
exit:
free(buf);
*buflen = attrbuflen;
return ret;
}
ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, char *list, size_t size)
{
return sys_flistxattr(fd, list, size);
}
