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Add support for setting the non-blocking I/O flag for LinuxKPI

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character devices. In Linux the FIONBIO IOCTL is handled by the kernel
and not the drivers. Also need return success for the FIOASYNC ioctl
due to existing logic in kern_fcntl() even though it is not supported
currently.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2017-06-02 16:30:40 +00:00
parent d04e6601fa
commit 639af71ab1
1 changed files with 4 additions and 0 deletions
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4
sys/compat/linuxkpi/common/src/linux_compat.c
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@ -826,6 +826,10 @@ linux_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
return (error);
filp->f_flags = file->f_flag;
/* the LinuxKPI supports blocking and non-blocking I/O */
if (cmd == FIONBIO || cmd == FIOASYNC)
return (0);
linux_set_current(td);
size = IOCPARM_LEN(cmd);
/* refer to logic in sys_ioctl() */