WebSVN – HelenOS – Path Comparison – / – /trunk/uspace/lib/libc Rev 2682 and /trunk/uspace/lib/libc Rev 2684

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 /trunk/uspace/lib/libc/include/unistd.h
 ,8 → 41,14
 #define NULL 0
 #define getpagesize()     (PAGE_SIZE)
+#define SEEK_SET    0
+#define SEEK_CUR    1
+#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 off_t lseek(int, off_t, int);
 extern void _exit(int status);
 extern void *sbrk(ssize_t incr);
 extern int usleep(unsigned long usec);

 /trunk/uspace/lib/libc/generic/vfs.c
 ,5 → 1,5
 /*
- * Copyright (c) 2007 Jakub Jermar
+ * Copyright (c) 2008 Jakub Jermar
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
 ,5 → 184,35
     futex_up(&vfs_phone_futex);
     return (ssize_t) IPC_GET_ARG1(answer);
 }
+off_t lseek(int fildes, off_t offset, int whence)
+{
+    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;
+        }
+    }
+    off_t newoffs;
+    rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,
+        &newoffs);
+    async_serialize_end();
+    futex_up(&vfs_phone_futex);
+    if (rc != EOK)
+        return (off_t) -1;
+    return newoffs;
+}
 /** @}
  */