WebSVN – HelenOS – Diff – /trunk/uspace/srv/vfs/vfs_ops.c



#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <bool.h>
 
#include <fibril_sync.h>
#include <adt/list.h>
#include <unistd.h>
#include <ctype.h>
#include <fcntl.h>

     * The name has already been unlinked by vfs_lookup_internal().
     * We have to get and put the VFS node to ensure that it is
     * VFS_DESTROY'ed after the last reference to it is dropped.
     */
    vfs_node_t *node = vfs_node_get(&lr);
    fibril_mutex_lock(&nodes_mutex);
    node->lnkcnt--;
    fibril_mutex_unlock(&nodes_mutex);
    fibril_rwlock_write_unlock(&namespace_rwlock);
    vfs_node_put(node);
    ipc_answer_0(rid, EOK);
}
 

            ipc_answer_0(rid, ENOMEM);
            free(old);
            free(new);
            return;
        }
        fibril_mutex_lock(&nodes_mutex);
        new_node->lnkcnt--;
        fibril_mutex_unlock(&nodes_mutex);
        break;
    default:
        fibril_rwlock_write_unlock(&namespace_rwlock);
        ipc_answer_0(rid, ENOTEMPTY);
        free(old);

        ipc_answer_0(rid, rc);
        free(old);
        free(new);
        return;
    }
    fibril_mutex_lock(&nodes_mutex);
    old_node->lnkcnt++;
    fibril_mutex_unlock(&nodes_mutex);
    /* Destroy the link for the old name. */
    rc = vfs_lookup_internal(oldc, L_UNLINK, NULL, NULL);
    if (rc != EOK) {
        fibril_rwlock_write_unlock(&namespace_rwlock);
        vfs_node_put(old_node);

        ipc_answer_0(rid, rc);
        free(old);
        free(new);
        return;
    }
    fibril_mutex_lock(&nodes_mutex);
    old_node->lnkcnt--;
    fibril_mutex_unlock(&nodes_mutex);
    fibril_rwlock_write_unlock(&namespace_rwlock);
    vfs_node_put(old_node);
    if (new_node)
        vfs_node_put(new_node);
    free(old);

Rev 4551	Rev 4555
Line 41...	Line 41...
41	#include <errno.h>	41	#include <errno.h>
42	#include <stdio.h>	42	#include <stdio.h>
43	#include <stdlib.h>	43	#include <stdlib.h>
44	#include <string.h>	44	#include <string.h>
45	#include <bool.h>	45	#include <bool.h>
46	#include <futex.h>	-
47	#include <fibril_sync.h>	46	#include <fibril_sync.h>
48	#include <adt/list.h>	47	#include <adt/list.h>
49	#include <unistd.h>	48	#include <unistd.h>
50	#include <ctype.h>	49	#include <ctype.h>
51	#include <fcntl.h>	50	#include <fcntl.h>
Line 1129...	Line 1128...
1129	* The name has already been unlinked by vfs_lookup_internal().	1128	* The name has already been unlinked by vfs_lookup_internal().
1130	* We have to get and put the VFS node to ensure that it is	1129	* We have to get and put the VFS node to ensure that it is
1131	* VFS_DESTROY'ed after the last reference to it is dropped.	1130	* VFS_DESTROY'ed after the last reference to it is dropped.
1132	*/	1131	*/
1133	vfs_node_t *node = vfs_node_get(&lr);	1132	vfs_node_t *node = vfs_node_get(&lr);
1134	futex_down(&nodes_futex);	1133	fibril_mutex_lock(&nodes_mutex);
1135	node->lnkcnt--;	1134	node->lnkcnt--;
1136	futex_up(&nodes_futex);	1135	fibril_mutex_unlock(&nodes_mutex);
1137	fibril_rwlock_write_unlock(&namespace_rwlock);	1136	fibril_rwlock_write_unlock(&namespace_rwlock);
1138	vfs_node_put(node);	1137	vfs_node_put(node);
1139	ipc_answer_0(rid, EOK);	1138	ipc_answer_0(rid, EOK);
1140	}	1139	}
1141		1140
Line 1280...	Line 1279...
1280	ipc_answer_0(rid, ENOMEM);	1279	ipc_answer_0(rid, ENOMEM);
1281	free(old);	1280	free(old);
1282	free(new);	1281	free(new);
1283	return;	1282	return;
1284	}	1283	}
1285	futex_down(&nodes_futex);	1284	fibril_mutex_lock(&nodes_mutex);
1286	new_node->lnkcnt--;	1285	new_node->lnkcnt--;
1287	futex_up(&nodes_futex);	1286	fibril_mutex_unlock(&nodes_mutex);
1288	break;	1287	break;
1289	default:	1288	default:
1290	fibril_rwlock_write_unlock(&namespace_rwlock);	1289	fibril_rwlock_write_unlock(&namespace_rwlock);
1291	ipc_answer_0(rid, ENOTEMPTY);	1290	ipc_answer_0(rid, ENOTEMPTY);
1292	free(old);	1291	free(old);
Line 1302...	Line 1301...
1302	ipc_answer_0(rid, rc);	1301	ipc_answer_0(rid, rc);
1303	free(old);	1302	free(old);
1304	free(new);	1303	free(new);
1305	return;	1304	return;
1306	}	1305	}
1307	futex_down(&nodes_futex);	1306	fibril_mutex_lock(&nodes_mutex);
1308	old_node->lnkcnt++;	1307	old_node->lnkcnt++;
1309	futex_up(&nodes_futex);	1308	fibril_mutex_unlock(&nodes_mutex);
1310	/* Destroy the link for the old name. */	1309	/* Destroy the link for the old name. */
1311	rc = vfs_lookup_internal(oldc, L_UNLINK, NULL, NULL);	1310	rc = vfs_lookup_internal(oldc, L_UNLINK, NULL, NULL);
1312	if (rc != EOK) {	1311	if (rc != EOK) {
1313	fibril_rwlock_write_unlock(&namespace_rwlock);	1312	fibril_rwlock_write_unlock(&namespace_rwlock);
1314	vfs_node_put(old_node);	1313	vfs_node_put(old_node);
Line 1317...	Line 1316...
1317	ipc_answer_0(rid, rc);	1316	ipc_answer_0(rid, rc);
1318	free(old);	1317	free(old);
1319	free(new);	1318	free(new);
1320	return;	1319	return;
1321	}	1320	}
1322	futex_down(&nodes_futex);	1321	fibril_mutex_lock(&nodes_mutex);
1323	old_node->lnkcnt--;	1322	old_node->lnkcnt--;
1324	futex_up(&nodes_futex);	1323	fibril_mutex_unlock(&nodes_mutex);
1325	fibril_rwlock_write_unlock(&namespace_rwlock);	1324	fibril_rwlock_write_unlock(&namespace_rwlock);
1326	vfs_node_put(old_node);	1325	vfs_node_put(old_node);
1327	if (new_node)	1326	if (new_node)
1328	vfs_node_put(new_node);	1327	vfs_node_put(new_node);
1329	free(old);	1328	free(old);

Subversion Repositories HelenOS

(root)/trunk/uspace/srv/vfs/vfs_ops.c – Rev 4551 → 4555