iofunc_mmap()

Handle an IO_MMAP message

Synopsis:

#include <sys/iofunc.h>

int iofunc_mmap ( resmgr_context_t * hdr,
                  io_mmap_t * msg,
                  iofunc_ocb_t * ocb,
                  iofunc_attr_t * attr );

Library:

libc

Description:

The iofunc_mmap() function provides functionality for the _IO_MMAP message. The _IO_MMAP message is an outcall from the Memory Manager (a part of the Neutrino microkernel's procnto).

Note that if the Process Manager is to be able to execute from this resource, then you must use the iofunc_mmap() function.

Returns:

EOK

Successful completion.

EROFS

An attempt to memory map (mmap) a read-only file, using the PROT_WRITE page protection mode.

EACCES

The client doesn't have the appropriate permissions.

ENOMEM

Insufficient memory exists to allocate internal resources required to effect the mapping.

Classification:

QNX 6

See also:

iofunc_chmod_default(), iofunc_chown_default(), iofunc_close_dup_default(), iofunc_close_ocb_default(), iofunc_devctl_default(), iofunc_lock_default(), iofunc_lseek_default(), iofunc_mmap_default(), iofunc_open_default(), iofunc_pathconf_default(), iofunc_stat_default(), iofunc_time_update(), iofunc_unblock_default(), iofunc_utime_default(), resmgr_attach()