Populate a stat structure
Synopsis:
#include <sys/iofunc.h>
int iofunc_stat( resmgr_context_t* ctp,
iofunc_attr_t* attr,
struct stat* statp );
int iofunc_stat_format( resmgr_context_t *ctp,
iofunc_attr_t *attr,
unsigned *formatp,
struct stat *statp,
unsigned *lenp );
Arguments:
- ctp
- A pointer to a
resmgr_context_t
structure that the resource-manager library uses to pass context information
between functions.
- attr
- A pointer to the
iofunc_attr_t
structure that describes the characteristics of the device that's
associated with your resource manager.
- formatp
- (iofunc_stat_format() only) A pointer to the required form of the status information; one of:
- _STAT_FORM_UNSET — unknown; this is assumed to be the same as
_STAT_FORM_T32_2001.
The function sets *statp to _STAT_FORM_T32_2001.
- _STAT_FORM_T32_2001 — 32-bit fields, POSIX 2001
- _STAT_FORM_T32_2008 — 32-bit fields, POSIX 2008
- _STAT_FORM_T64_2008 — 64-bit fields, POSIX 2008
- _STAT_FORM_SYS_2008 — _STAT_FORM_T32_2008 in programs compiled
for a 32-bit architecture, or _STAT_FORM_T64_2008 in programs compiled for a 64-bit architecture.
- _STAT_FORM_PREFERRED — the preferred form:
_STAT_FORM_T32_2001 in programs compiled for a 32-bit architecture,
or _STAT_FORM_T64_2008 in programs compiled for a 64-bit architecture.
If the function doesn't recognize the form, it uses _STAT_FORM_T64_2008 and sets
*statp to that value.
- statp
- A pointer to the
struct stat
structure that you want to fill.
- lenp
- (iofunc_stat_format() only) NULL, or a pointer to a location
where the function can store the length of the status structure.
Library:
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
Description:
The iofunc_stat() and iofunc_stat_format() functions populate
the passed statp
structure based on information from the passed attr
structure and the context pointer, ctp.
These functions are typically used when the resource manager is handling the _IO_STAT message,
and needs to format the current status information for the resource.
Returns:
EOK on successful completion, or an
errno
value if an error occurred.
Classification:
QNX Neutrino
| Safety: |
|
|---|
| Cancellation point |
No |
| Interrupt handler |
No |
| Signal handler |
Yes |
| Thread |
Yes |