Visible to Intel only — GUID: GUID-0220B5FA-94A5-44BE-BFBD-30C42B56F374
Visible to Intel only — GUID: GUID-0220B5FA-94A5-44BE-BFBD-30C42B56F374
IERRNO
Portability Function: Returns the number of the last detected error from any routines in the IFPORT module that return error codes.
Module
USE IFPORT
result = IERRNO( )
Results
The result type is INTEGER(4). The result value is the last error code from any portability routines that return error codes. These error codes are analogous to errno on a Linux* or macOS system. The module IFPORT.F90 provides parameter definitions for the following errno names (typically found in errno.h on Linux systems):
Symbolic name |
Number |
Description |
---|---|---|
EPERM |
1 |
Insufficient permission for operation |
ENOENT |
2 |
No such file or directory |
ESRCH |
3 |
No such process |
EIO |
5 |
I/O error |
E2BIG |
7 |
Argument list too long |
ENOEXEC |
8 |
File is not executable |
ENOMEM |
12 |
Not enough resources |
EACCES |
13 |
Permission denied |
EXDEV |
18 |
Cross-device link |
ENOTDIR |
20 |
Not a directory |
EINVAL |
22 |
Invalid argument |
The value returned by IERRNO is updated only when an error occurs. For example, if an error occurs on a GETLOG call and then two CHMOD calls succeed, a subsequent call to IERRNO returns the error for the GETLOG call.
Examine IERRNO immediately after returning from a portability routine. IERRNO is set on a per thread basis.
Example
USE IFPORT
CHARACTER*20 username
INTEGER(4) ierrval
ierrval=0 !initialize return value
CALL GETLOG(username)
IF (IERRNO( ) == ierrval) then
print *, 'User name is ',username
exit
ELSE
ierrval = ierrno()
print *, 'Error is ',ierrval
END IF