diff options
Diffstat (limited to 'sys/kern/sys_generic.c')
| -rw-r--r-- | sys/kern/sys_generic.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/sys/kern/sys_generic.c b/sys/kern/sys_generic.c index 5606b36f772f..7d666da9f88b 100644 --- a/sys/kern/sys_generic.c +++ b/sys/kern/sys_generic.c @@ -729,7 +729,7 @@ kern_ioctl(struct thread *td, int fd, u_long com, caddr_t data) { struct file *fp; struct filedesc *fdp; - int error, tmp, locked; + int error, f_flag, tmp, locked; AUDIT_ARG_FD(fd); AUDIT_ARG_CMD(com); @@ -782,30 +782,36 @@ kern_ioctl(struct thread *td, int fd, u_long com, caddr_t data) goto out; } + f_flag = 0; switch (com) { case FIONCLEX: fdp->fd_ofiles[fd].fde_flags &= ~UF_EXCLOSE; - goto out; + break; case FIOCLEX: fdp->fd_ofiles[fd].fde_flags |= UF_EXCLOSE; - goto out; - case FIONBIO: - if ((tmp = *(int *)data)) - atomic_set_int(&fp->f_flag, FNONBLOCK); - else - atomic_clear_int(&fp->f_flag, FNONBLOCK); - data = (void *)&tmp; break; + case FIONBIO: case FIOASYNC: - if ((tmp = *(int *)data)) - atomic_set_int(&fp->f_flag, FASYNC); - else - atomic_clear_int(&fp->f_flag, FASYNC); - data = (void *)&tmp; + f_flag = com == FIONBIO ? FNONBLOCK : FASYNC; + tmp = *(int *)data; + fsetfl_lock(fp); + if (((fp->f_flag & f_flag) != 0) != (tmp != 0)) { + error = fo_ioctl(fp, com, (void *)&tmp, td->td_ucred, + td); + if (error == 0) { + if (tmp != 0) + atomic_set_int(&fp->f_flag, f_flag); + else + atomic_clear_int(&fp->f_flag, f_flag); + } + } + fsetfl_unlock(fp); + break; + default: + error = fo_ioctl(fp, com, data, td->td_ucred, td); break; } - error = fo_ioctl(fp, com, data, td->td_ucred, td); out: switch (locked) { case LA_XLOCKED: |