diff options
Diffstat (limited to 'fs/fcntl.c')
| -rw-r--r-- | fs/fcntl.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/fs/fcntl.c b/fs/fcntl.c index 8d78ffd7b399..e95fa0a352ea 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -418,7 +418,7 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, break; case F_ADD_SEALS: case F_GET_SEALS: - err = shmem_fcntl(filp, cmd, arg); + err = memfd_fcntl(filp, cmd, arg); break; case F_GET_RW_HINT: case F_SET_RW_HINT: @@ -563,6 +563,9 @@ static int put_compat_flock64(const struct flock *kfl, struct compat_flock64 __u { struct compat_flock64 fl; + BUILD_BUG_ON(sizeof(kfl->l_start) > sizeof(ufl->l_start)); + BUILD_BUG_ON(sizeof(kfl->l_len) > sizeof(ufl->l_len)); + memset(&fl, 0, sizeof(struct compat_flock64)); copy_flock_fields(&fl, kfl); if (copy_to_user(ufl, &fl, sizeof(struct compat_flock64))) @@ -632,9 +635,8 @@ COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, if (err) break; err = fixup_compat_flock(&flock); - if (err) - return err; - err = put_compat_flock(&flock, compat_ptr(arg)); + if (!err) + err = put_compat_flock(&flock, compat_ptr(arg)); break; case F_GETLK64: case F_OFD_GETLK: @@ -642,12 +644,8 @@ COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, if (err) break; err = fcntl_getlk(f.file, convert_fcntl_cmd(cmd), &flock); - if (err) - break; - err = fixup_compat_flock(&flock); - if (err) - return err; - err = put_compat_flock64(&flock, compat_ptr(arg)); + if (!err) + err = put_compat_flock64(&flock, compat_ptr(arg)); break; case F_SETLK: case F_SETLKW: @@ -692,7 +690,7 @@ COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd, /* Table to convert sigio signal codes into poll band bitmaps */ -static const long band_table[NSIGPOLL] = { +static const __poll_t band_table[NSIGPOLL] = { POLLIN | POLLRDNORM, /* POLL_IN */ POLLOUT | POLLWRNORM | POLLWRBAND, /* POLL_OUT */ POLLIN | POLLRDNORM | POLLMSG, /* POLL_MSG */ @@ -725,7 +723,7 @@ static void send_sigio_to_task(struct task_struct *p, * F_SETSIG can change ->signum lockless in parallel, make * sure we read it once and use the same value throughout. */ - int signum = ACCESS_ONCE(fown->signum); + int signum = READ_ONCE(fown->signum); if (!sigio_perm(p, fown, signum)) return; @@ -739,6 +737,7 @@ static void send_sigio_to_task(struct task_struct *p, delivered even if we can't queue. Failure to queue in this case _should_ be reported; we fall back to SIGIO in that case. --sct */ + clear_siginfo(&si); si.si_signo = signum; si.si_errno = 0; si.si_code = reason; @@ -760,7 +759,7 @@ static void send_sigio_to_task(struct task_struct *p, if (reason - POLL_IN >= NSIGPOLL) si.si_band = ~0L; else - si.si_band = band_table[reason - POLL_IN]; + si.si_band = mangle_poll(band_table[reason - POLL_IN]); si.si_fd = fd; if (!do_send_sig_info(signum, &si, p, group)) break; |