DCMD_ALL_SETFLAGS

Synopsis:

#include <sys/dcmd_all.h>

#define DCMD_ALL_SETFLAGS   __DIOT(_DCMD_ALL, 2, int)

Arguments to devctl():

Argument	Value
`filedes`	A file descriptor that you obtained by opening the device.
`dcmd`	DCMD_ALL_SETFLAGS
`dev_data_ptr`	A pointer to a int containing the flags you want to set.
`n_bytes`	`sizeof(int)`
`dev_info_ptr`	NULL

Description:

This command sets O_* file status flags, described in <fcntl.h>. You can't use this command to set the file access bits. Clients usually use the fcntl() cover function to generate this request:

fcntl(fd, F_SETFL, flags);

Input:

A bitwise OR of zero or more of the following status flags (identified by the QNX Neutrino O_SETFLAG mask):

O_APPEND
O_DSYNC
O_LARGEFILE
O_NONBLOCK
O_RSYNC
O_SYNC

For more information, see open() in the QNX Neutrino C Library Reference.

Output:

None.

Errors:

The devctl() function can return the following, in addition to the error codes listed in its entry in the C Library Reference:

EINVAL: You specified one of the *SYNC flags, but IOFUNC_PC_SYNC_IO isn't set in the device's mount configuration.

Example:

if (devctl(fd, DCMD_ALL_SETFLAGS, &flags, sizeof flags, NULL) != EOK)
{
   /* Error */
}