diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
commit | d635711daa98be86d4c7fd01499c34f566b54ccb (patch) | |
tree | aa5cc3760a27c3d57146498cb82fa549547de06c /fs/nfsd/vfs.h | |
parent | c91265cd0efb83778f015b4d4b1129bd2cfd075e (diff) |
Linux-libre 4.6.2-gnu
Diffstat (limited to 'fs/nfsd/vfs.h')
-rw-r--r-- | fs/nfsd/vfs.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h index c11ba316f..2d573ec05 100644 --- a/fs/nfsd/vfs.h +++ b/fs/nfsd/vfs.h @@ -139,4 +139,23 @@ static inline int nfsd_create_is_exclusive(int createmode) || createmode == NFS4_CREATE_EXCLUSIVE4_1; } +static inline bool nfsd_eof_on_read(long requested, long read, + loff_t offset, loff_t size) +{ + /* We assume a short read means eof: */ + if (requested > read) + return true; + /* + * A non-short read might also reach end of file. The spec + * still requires us to set eof in that case. + * + * Further operations may have modified the file size since + * the read, so the following check is not atomic with the read. + * We've only seen that cause a problem for a client in the case + * where the read returned a count of 0 without setting eof. + * That case was fixed by the addition of the above check. + */ + return (offset + read >= size); +} + #endif /* LINUX_NFSD_VFS_H */ |