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Merge pull request #520 from BernardXiong/master 

[DFS] Add fsync function
This commit is contained in:
Bernard Xiong 2015-07-16 10:36:48 +08:00
parent eb29a6877f 52e0d3ce0f
commit a6f0b844cf
1 changed files with 30 additions and 0 deletions
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30
components/dfs/src/dfs_posix.c
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@ -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.