From 52e0d3ce0f4af4b689e3c63cff5c83a2158f143c Mon Sep 17 00:00:00 2001 From: Bernard Xiong Date: Thu, 16 Jul 2015 10:35:42 +0800 Subject: [PATCH] [DFS] Add fsync function --- components/dfs/src/dfs_posix.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/components/dfs/src/dfs_posix.c b/components/dfs/src/dfs_posix.c index c1a6a5beb6..250f6eaf7f 100644 --- a/components/dfs/src/dfs_posix.c +++ b/components/dfs/src/dfs_posix.c @@ -374,6 +374,36 @@ int fstat(int fildes, struct stat *buf) } RTM_EXPORT(fstat); +/** + * this function is a POSIX compliant version, which shall request that all data + * for the open file descriptor named by fildes is to be transferred to the storage + * device associated with the file described by fildes. + * + * @param fildes the file description + * + * @return 0 on successful completion. Otherwise, -1 shall be returned and errno + * set to indicate the error. + */ +int fsync(int fildes) +{ + int ret; + struct dfs_fd *d; + + /* get the fd */ + d = fd_get(fildes); + if (d == RT_NULL) + { + rt_set_errno(-DFS_STATUS_EBADF); + return -1; + } + + ret = dfs_file_flush(d); + + fd_put(d); + return ret; +} +RTM_EXPORT(fsync); + /** * this function is a POSIX compliant version, which will return the * information about a mounted file system. -- GitLab