Changeset 5581b469 in mainline

Timestamp:

2010-11-29T19:33:07Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

f07f6b2

Parents:

7329e6a

Message:

Introduce new boolean properties into vfs_info_t.

The FS can set concurrent_read_write to true if it is ready to handle
concurrent reads and writes from/to one node.

The FS can set write_retains_size if its write method never modifies the
size of the node.

Location:

uspace

Files:

• lib/c/include/ipc/vfs.h (modified) (2 diffs)
• srv/fs/devfs/devfs.c (modified) (1 diff)
• srv/fs/fat/fat.c (modified) (1 diff)
• srv/fs/tmpfs/tmpfs.c (modified) (1 diff)

uspace/lib/c/include/ipc/vfs.h

@@ -36 +36 @@
 #define LIBC_IPC_VFS_H_
 
+#include <ipc/ipc.h>
 #include <sys/types.h>
-#include <ipc/ipc.h>
+#include <bool.h>
 
 #define FS_NAME_MAXLEN  20
@@ -55 +56 @@
         /** Unique identifier of the fs. */
         char name[FS_NAME_MAXLEN + 1];
+        bool concurrent_read_write;
+        bool write_retains_size;
 } vfs_info_t;
 

uspace/srv/fs/devfs/devfs.c

@@ -53 +53 @@
 static vfs_info_t devfs_vfs_info = {
         .name = NAME,
+        .concurrent_read_write = false,
+        .write_retains_size = false,
 };
 

uspace/srv/fs/fat/fat.c

@@ -52 +52 @@
 vfs_info_t fat_vfs_info = {
         .name = NAME,
+        .concurrent_read_write = false,
+        .write_retains_size = false,    
 };
 

uspace/srv/fs/tmpfs/tmpfs.c

@@ -57 +57 @@
 vfs_info_t tmpfs_vfs_info = {
         .name = NAME,
+        .concurrent_read_write = false,
+        .write_retains_size = false,
 };