iofunc_lseek_default()

Default handler for _IO_LSEEK messages

Synopsis:

#include <sys/iofunc.h>

int iofunc_lseek_default( resmgr_context_t* ctp,
                          io_lseek_t* msg,
                          iofunc_ocb_t* ocb );

Library:

libc

Description:

The iofunc_lseek_default() function implements POSIX semantics for the client's lseek() call, which is received as an _IO_LSEEK message by the resource manager. This function can be placed directly into the io_funcs table passed to resmgr_attach(), at the lseek position.

The iofunc_lseek_default() function calls iofunc_lseek() to do the actual work, and (if installed in the io_funcs table) issues the reply back to the client.

Returns:

EOK

Successful completion.

EINVAL

The whence member in the _IO_LSEEK message wasn't one of SEEK_SET, SEEK_CUR, or SEEK_END, or the resulting position after the offset was applied resulted in a negative number (overflow).

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(), iofunc_mmap_default(), iofunc_open_default(), iofunc_pathconf_default(), iofunc_stat_default(), iofunc_time_update(), iofunc_unblock_default(), iofunc_utime_default(), resmgr_attach()