resmgr_devino()
Get the device and inode number
Synopsis:
#include <sys/resmgr.h> int resmgr_devino( int id, dev_t *pdevno, ino64_t *pino );
Arguments:
- id
- The link ID that resmgr_attach() returned.
- pdevno
- A pointer to a dev_t object where the function can store the device number.
- pino
- A pointer to a ino64_t object where the function can store the inode number.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The function resmgr_devino() fills in the structures pointed to by pdevno and pino with the device number and inode number extracted from id.
This function is typically used to fill in:
- iofunc_mount_t->dev
- iofunc_attr_t->inode
You can use the major(), minor(), and makedev() macros to work with device IDs. They're defined in <sys/types.h> and are described in the documentation for stat() .
Returns:
-1 on error (errno is set); any other value on success.
Errors:
- EINVAL
- The id argument is invalid.
Examples:
#include <sys/resmgr.h> #include <stdio.h> #include <stdlib.h> int main( void ) { iofunc_mount_t mount; iofunc_attr_t attr; ... attr.mount = &mount; ... id = resmgr_attach( ... ) ... resmgr_devino(id, &mount.dev, &attr.inode); ... return EXIT_SUCCESS; }
Classification:
Safety: | |
---|---|
Cancellation point | Yes |
Interrupt handler | No |
Signal handler | No |
Thread | Yes |