diff options
| -rw-r--r-- | nuttx/fs/nxffs/nxffs_open.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/nuttx/fs/nxffs/nxffs_open.c b/nuttx/fs/nxffs/nxffs_open.c index 99998350b..c00e2ea6d 100644 --- a/nuttx/fs/nxffs/nxffs_open.c +++ b/nuttx/fs/nxffs/nxffs_open.c @@ -423,11 +423,27 @@ static inline int nxffs_wropen(FAR struct nxffs_volume_s *volume, ret = nxffs_findinode(volume, name, &entry); if (ret == OK) { - /* It exists. It would be an error if we are asked to create it + FAR struct nxffs_ofile_s *ofile; + + /* It exists. Is the file already open for reading? */ + + ofile = nxffs_findofile(volume, name); + if (ofile) + { + /* The file is already open. + * Limitation: Files cannot be open both for reading and writing. + */ + + fdbg("File is open for reading\n"); + ret = -ENOSYS; + goto errout_with_exclsem; + } + + /* It would be an error if we are asked to create the file * exclusively. */ - if ((oflags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL)) + else if ((oflags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL)) { fdbg("File exists, can't create O_EXCL\n"); ret = -EEXIST; |