IntelÂ® Fortran Libraries Reference

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2 Intel Fortran Libraries ReferenceIf successful, ierror is not changed; otherwise, an error code.The PXFGETGRNAM subroutine stores the group information from /etc/group for the entrythat matches the group name name in the structure associated with handle jgroup.NOTE. To get a handle for an instance of the group structure, usePXFSTRUCTCREATE with the string 'group' for the structure name.See Also: “PXFSTRUCTCREATE”PXFGETGROUPSPOSIX Subroutine: Gets supplementary group IDs. This subroutine is only available on Linux*systems.Module: USE IFPOSIXSyntaxCALL PXFGETGROUPS (igidsetsize, igrouplist, ngroups, ierror)igidsetsize(Input) INTEGER(4). The number of elements in the igrouplist array.igrouplist(Output) INTEGER(4). The array that has the returned supplementary group IDs.ngroups(Output) INTEGER(4). The total number of supplementary group IDs for the process.ierror(Output) INTEGER(4). The error status.If successful, ierror is set to zero; otherwise, an error code.The PXFGETGROUPS subroutine returns, up to size igidsetsize, the supplementary group IDs inarray igrouplist. It is unspecified whether the effective group ID of the calling process is includedin the returned list. If the size is zero, the list is not modified, but the total number ofsupplementary group IDs for the process is returned.Exampleprogram test5use ifposiximplicit none2-300
Descriptions of the Library Routines 2integer(4) number_of_groups, ierror, isize,i, igidinteger(4),allocatable,dimension(:):: igrouplistinteger(JHANDLE_SIZE) jgroup! Get total number of groups in system! call PXFGETGROUPS with 0call PXFGETGROUPS(0, igrouplist, number_of_groups, ierror)if(ierror.NE.0) STOP 'Error: first call of PXFGETGROUPS fails'print *," The number of groups in system ", number_of_groups! Get Group IDsisize = number_of_groupsALLOCATE( igrouplist(isize))call PXFGETGROUPS(isize, igrouplist, number_of_groups, ierror)if(ierror.NE.0) thenDEALLOCATE(igrouplist)STOP 'Error: first call of PXFGETGROUPS fails'end ifprint *," Create an instance for structure 'group' "call PXFSTRUCTCREATE("group",jgroup, ierror)if(ierror.NE.0) thenDEALLOCATE(igrouplist)STOP 'Error: PXFSTRUCTCREATE failed to create an instance of group'end ifdo i=1, number_of_groupscall PXFGETGRGID( igrouplist(i), jgroup, ierror)if(ierror.NE.0) thenDEALLOCATE(igrouplist)call PXFSTRUCTFREE(jgroup, ierror)print *,'Error: PXFGETGRGID failed for i=',i," gid=", igrouplist(i)STOP 'Abnormal termination'end ifcall PRINT_GROUP_INFO(jgroup)end docall PXFGETGID(igid,ierror)if(ierror.NE.0) thenDEALLOCATE(igrouplist)2-301
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Overview of the Libraries 1This cha
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