diff options
Diffstat (limited to 'fs/open.c')
| -rw-r--r-- | fs/open.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/fs/open.c b/fs/open.c index 9f4bbd7cc51a..cd0c5be8d012 100644 --- a/fs/open.c +++ b/fs/open.c @@ -193,7 +193,8 @@ static long do_sys_ftruncate(unsigned int fd, loff_t length, int small) goto out_putf; error = -EPERM; - if (IS_APPEND(inode)) + /* Check IS_APPEND on real upper inode */ + if (IS_APPEND(file_inode(f.file))) goto out_putf; sb_start_write(inode->i_sb); @@ -897,6 +898,12 @@ static inline int build_open_flags(int flags, umode_t mode, struct open_flags *o int lookup_flags = 0; int acc_mode = ACC_MODE(flags); + /* + * Clear out all open flags we don't know about so that we don't report + * them in fcntl(F_GETFD) or similar interfaces. + */ + flags &= VALID_OPEN_FLAGS; + if (flags & (O_CREAT | __O_TMPFILE)) op->mode = (mode & S_IALLUGO) | S_IFREG; else @@ -1075,6 +1082,26 @@ SYSCALL_DEFINE4(openat, int, dfd, const char __user *, filename, int, flags, return do_sys_open(dfd, filename, flags, mode); } +#ifdef CONFIG_COMPAT +/* + * Exactly like sys_open(), except that it doesn't set the + * O_LARGEFILE flag. + */ +COMPAT_SYSCALL_DEFINE3(open, const char __user *, filename, int, flags, umode_t, mode) +{ + return do_sys_open(AT_FDCWD, filename, flags, mode); +} + +/* + * Exactly like sys_openat(), except that it doesn't set the + * O_LARGEFILE flag. + */ +COMPAT_SYSCALL_DEFINE4(openat, int, dfd, const char __user *, filename, int, flags, umode_t, mode) +{ + return do_sys_open(dfd, filename, flags, mode); +} +#endif + #ifndef __alpha__ /* |