Changeset 0ee4322 in mainline for uspace/lib/libc

Timestamp:

2008-01-13T13:19:37Z (17 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

d0dc74ae

Parents:

4fb6bf36

Message:

Add ftruncate() and support for VFS_TRUNCATE to VFS and TMPFS.

Location:

uspace/lib/libc

Files:

• generic/vfs.c (modified) (3 diffs)
• include/unistd.h (modified) (1 diff)

uspace/lib/libc/generic/vfs.c

@@ -95 +95 @@
 
 
-int open(const char *name, int oflag, ...)
+int open(const char *path, int oflag, ...)
 {
         int res;
@@ -113 +113 @@
         }
         req = async_send_2(vfs_phone, VFS_OPEN, oflag, 0, &answer);
-        rc = ipc_data_write_start(vfs_phone, name, strlen(name));
+        rc = ipc_data_write_start(vfs_phone, path, strlen(path));
         if (rc != EOK) {
                 async_wait_for(req, NULL);
@@ -215 +215 @@
 }
 
+int ftruncate(int fildes, off_t length)
+{
+        int res;
+        ipcarg_t rc;
+        
+        futex_down(&vfs_phone_futex);
+        async_serialize_start();
+        if (vfs_phone < 0) {
+                res = vfs_connect();
+                if (res < 0) {
+                        async_serialize_end();
+                        futex_up(&vfs_phone_futex);
+                        return res;
+                }
+        }
+        rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);
+        async_serialize_end();
+        futex_up(&vfs_phone_futex);
+        return (int) rc;
+}
+
 /** @}
  */

uspace/lib/libc/include/unistd.h

@@ -46 +46 @@
 #define SEEK_END        2
 
-extern ssize_t write(int fd, const void * buf, size_t count);
-extern ssize_t read(int fd, void * buf, size_t count);
+extern ssize_t write(int, const void *, size_t);
+extern ssize_t read(int, void *, size_t);
 extern off_t lseek(int, off_t, int);
+extern int ftruncate(int, off_t);
 
 extern void _exit(int status);