Checks for access permission to an open file.
#include <sys/types.h> #include <sys/errno.h> int fp_access ( fp, perm) struct file *fp; int perm;
| Item | Description |
|---|---|
| fp | Points to a file structure returned by the fp_open or fp_opendev kernel service. |
| perm | Indicates which read, write, and execute permissions are to be checked. The /usr/include/sys/mode.h file contains pertinent values (IREAD, IWRITE, IEXEC). |
The fp_access kernel service is used to see if either the read, write, or exec bit is set anywhere in a file's permissions mode. Set perm to one of the following constants from mode.h:
IREAD IWRITE IEXEC
The fp_access kernel service can be called from the process environment only.
| Item | Description |
|---|---|
| 0 | Indicates that the calling process has the requested permission. |
| EACCES | Indicates all other conditions. |