Convert afp_moveandrename and all called funcs to XXXat semantics if available

[netatalk.git] / libatalk / vfs / ea_sys.c

diff --git a/libatalk/vfs/ea_sys.c b/libatalk/vfs/ea_sys.c
index 4e7b8788108e76a289dd821b35659e986b3b1950..079458562933ced7a034a56cb05d03792eb9ef4a 100644 (file)
--- a/libatalk/vfs/ea_sys.c
+++ b/libatalk/vfs/ea_sys.c
@@ -1,5 +1,5 @@
 /*
-  $Id: ea_sys.c,v 1.1 2009-11-17 12:33:30 franklahm Exp $
+  $Id: ea_sys.c,v 1.6 2010-03-12 15:16:49 franklahm Exp $
   Copyright (c) 2009 Frank Lahm <franklahm@gmail.com>
 
   This program is free software; you can redistribute it and/or modify
@@ -50,6 +50,10 @@
 #include <atalk/util.h>
 #include <atalk/unix.h>
 
+#ifndef ENOATTR
+#define ENOATTR ENODATA
+#endif
+
 
 /**********************************************************************************
  * EA VFS funcs for storing EAs in nativa filesystem EAs
@@ -90,15 +94,17 @@ int sys_get_easize(VFS_FUNC_ARGS_EA_GETSIZE)
     }
     
     if (ret == -1) {
+        memset(rbuf, 0, 4);
+        *rbuflen += 4;
         switch(errno) {
         case ELOOP:
             /* its a symlink and client requested O_NOFOLLOW  */
             LOG(log_debug, logtype_afpd, "sys_getextattr_size(%s): encountered symlink with kXAttrNoFollow", uname);
+            return AFP_OK;
 
-            memset(rbuf, 0, 4);
-            *rbuflen += 4;
+        case ENOATTR:
+            return AFPERR_MISC;
 
-            return AFP_OK;
         default:
             LOG(log_error, logtype_afpd, "sys_getextattr_size: error: %s", strerror(errno));
             return AFPERR_MISC;
@@ -162,18 +168,22 @@ int sys_get_eacontent(VFS_FUNC_ARGS_EA_GETCONTENT)
         ret = sys_getxattr(uname, attruname,  rbuf +4, maxreply);
     }
     
-    if (ret == -1) switch(errno) {
-    case ELOOP:
-        /* its a symlink and client requested O_NOFOLLOW  */
-        LOG(log_debug, logtype_afpd, "sys_getextattr_content(%s): encountered symlink with kXAttrNoFollow", uname);
-
+    if (ret == -1) {
         memset(rbuf, 0, 4);
         *rbuflen += 4;
+        switch(errno) {
+        case ELOOP:
+            /* its a symlink and client requested O_NOFOLLOW  */
+            LOG(log_debug, logtype_afpd, "sys_getextattr_content(%s): encountered symlink with kXAttrNoFollow", uname);
+            return AFP_OK;
 
-        return AFP_OK;
-    default:
-        LOG(log_error, logtype_afpd, "sys_getextattr_content(%s): error: %s", attruname, strerror(errno));
-        return AFPERR_MISC;
+        case ENOATTR:
+            return AFPERR_MISC;
+
+        default:
+            LOG(log_error, logtype_afpd, "sys_getextattr_content(%s): error: %s", attruname, strerror(errno));
+            return AFPERR_MISC;
+        }
     }
 
     /* remember where we must store length of attribute data in rbuf */
@@ -310,6 +320,10 @@ int sys_set_ea(VFS_FUNC_ARGS_EA_SET)
             LOG(log_debug, logtype_afpd, "sys_set_ea(%s/%s): encountered symlink with kXAttrNoFollow",
                 uname, attruname);
             return AFP_OK;
+        case EEXIST:
+            LOG(log_debug, logtype_afpd, "sys_set_ea(%s/%s): EA already exists",
+                uname, attruname);
+            return AFPERR_EXIST;
         default:
             LOG(log_error, logtype_afpd, "sys_set_ea(%s/%s): error: %s", uname, attruname, strerror(errno));
             return AFPERR_MISC;
@@ -365,3 +379,148 @@ int sys_remove_ea(VFS_FUNC_ARGS_EA_REMOVE)
 
     return AFP_OK;
 }
+
+/*
+ * @brief Copy EAs
+ *
+ * @note Supports *at semantics, therfor switches back and forth between sfd and cwd
+ */
+int sys_ea_copyfile(VFS_FUNC_ARGS_COPYFILE)
+{
+       int ret = 0;
+    int cwd = -1;
+       ssize_t size;
+       char *names = NULL, *end_names, *name, *value = NULL;
+       unsigned int setxattr_ENOTSUP = 0;
+
+    if (sfd != -1) {
+        if ((cwd = open(".", O_RDONLY)) == -1) {
+            LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant open cwd: %s",
+                strerror(errno));
+            ret = -1;
+            goto getout;
+        }
+    }
+
+    if (sfd != -1) {
+        if (fchdir(sfd) == -1) {
+            LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant chdir to sfd: %s",
+                strerror(errno));
+            ret = -1;
+            goto getout;
+        }
+    }
+
+       size = sys_listxattr(src, NULL, 0);
+       if (size < 0) {
+               if (errno != ENOSYS && errno != ENOTSUP) {
+                       ret = -1;
+               }
+               goto getout;
+       }
+       names = malloc(size+1);
+       if (names == NULL) {
+               ret = -1;
+               goto getout;
+       }
+       size = sys_listxattr(src, names, size);
+       if (size < 0) {
+               ret = -1;
+               goto getout;
+       } else {
+               names[size] = '\0';
+               end_names = names + size;
+       }
+
+    if (sfd != -1) {
+        if (fchdir(cwd) == -1) {
+            LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant chdir to cwd: %s",
+                strerror(errno));
+            ret = -1;
+            goto getout;
+        }
+    }
+
+       for (name = names; name != end_names; name = strchr(name, '\0') + 1) {
+               void *old_value;
+
+               /* check if this attribute shall be preserved */
+               if (!*name)
+                       continue;
+
+        if (sfd != -1) {
+            if (fchdir(sfd) == -1) {
+                LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant chdir to sfd: %s",
+                    strerror(errno));
+                ret = -1;
+                goto getout;
+            }
+        }
+
+               size = sys_getxattr (src, name, NULL, 0);
+               if (size < 0) {
+                       ret = -1;
+                       continue;
+               }
+               value = realloc(old_value = value, size);
+               if (size != 0 && value == NULL) {
+                       free(old_value);
+                       ret = -1;
+               }
+               size = sys_getxattr(src, name, value, size);
+               if (size < 0) {
+                       ret = -1;
+                       continue;
+               }
+
+        if (sfd != -1) {
+            if (fchdir(cwd) == -1) {
+                LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant chdir to cwd: %s",
+                    strerror(errno));
+                ret = -1;
+                goto getout;
+            }
+        }
+
+               if (sys_setxattr(dst, name, value, size, 0) != 0) {
+                       if (errno == ENOTSUP)
+                               setxattr_ENOTSUP++;
+                       else {
+                               if (errno == ENOSYS) {
+                                       ret = -1;
+                                       /* no hope of getting any further */
+                                       break;
+                               } else {
+                                       ret = -1;
+                               }
+                       }
+               }
+       }
+       if (setxattr_ENOTSUP) {
+               errno = ENOTSUP;
+               ret = -1;
+       }
+
+getout:
+    if (cwd != -1)
+        close(cwd);
+        
+       free(value);
+       free(names);
+
+    if (ret == -1) {
+        switch(errno) {
+        case ENOENT:
+            /* no attribute */
+            break;
+        case EACCES:
+            LOG(log_debug, logtype_afpd, "sys_ea_copyfile(%s, %s): error: %s", src, dst, strerror(errno));
+            return AFPERR_ACCESS;
+        default:
+            LOG(log_error, logtype_afpd, "sys_ea_copyfile(%s, %s): error: %s", src, dst, strerror(errno));
+            return AFPERR_MISC;
+        }
+    }
+
+    return AFP_OK;
+}