uac(1) [ultrix man page]
uac(1) General Commands Manual uac(1) Name uac - Unaligned Access Message Control Syntax uac [s] [p] value Description The command controls the printing of "Fixed up unaligned data access for pid nnn at pc 0xAddr" messages. The command is used to set or display the flag that controls printing the message for the system or for the parent process of the user, which is typically a shell. If value is present, the flag is set; otherwise, the current flag setting is displayed. The value can be either a zero (0), which turns the flag off, or a one (1), which turns the flag on. If both the system and the user flags are on (set, 1) the unaligned data access errors are reported to the user. If either flag is off (not set, 0), the unaligned data access errors are not reported. Options The following options can be used with the command: s Set/display the current flag setting for the system. p Set/display the current flag setting for the parent process. Restrictions You must be superuser to set the system flag. RISC uac(1)
Check Out this Related Man Page
getsysinfo(2) System Calls Manual getsysinfo(2) Name getsysinfo - get system information Syntax #include <sys/types.h> #include <sys/sysinfo.h> getsysinfo(op, buffer, nbytes, start, arg) unsigned op; char *buffer; unsigned nbytes; int *start; char *arg; Description The system call retrieves information from the system. The op argument specifies the operation to be performed. Values for op are defined in the <sys/sysinfo.h> header file. Possible op values are as follows: GSI_BOOTDEV Return the BOOTDEV string, which is used for the installation. GSI_NETBLK Return the entire NETBLK structure, which is used for the network installation. GSI_PROG_ENV Return the compatibility mode of the process. Possible values are A_BSD, A_POSIX, A_SYSTEM_FIVE as defined in <sys/exec.h>. GSI_MAX_UPROCS Return the maximum number of processes allowed per user id. GSI_TTYP Return the major and minor numbers of the controlling terminal. GSI_UACSYS (RISC only) Return current value of flag that determines whether or not to print "unaligned access fixup" message on a system-wide basis. GSI_UACPARNT (RISC only) Return current value of flag in parent process's structure for printing unaligned access messages. GSI_UACPROC (RISC only) Return current value of flag in process's structure for printing of unaligned access messages. GSI_MMAP_ALIGNMENT (RISC only) Return the minimum alignment required for an address specified with the option in the system call. The nbytes argument defines the size of buffer into which the system information is returned. The start argument is the current logical location within the internal system table referenced by the op, and it must be initially set to The start argument is updated to reflect the current logical location within the system table, allowing successive executions of to retrieve information about all the system structures specified by op. The start argument is set to 0 when all system information requested by op has been retrieved. The optional arg argument may be used by certain op's for additional information. When arg is not required, it should be set to NULL. When information about multiple system structures is returned, it is stored within consecutive buffer locations. The information for each system structure is dependent upon op. Return Values Upon successful completion, a value indicating the number of requested items stored in buffer is returned. If the information requested by op is not available, getsysinfo returns a zero. Otherwise, -1 is returned, and the global variable, is set to indicate the error. Diagnostics [EFAULT] Either buffer, start, or arg causes an illegal address to be referenced. [EINVAL] The op argument is invalid. [EPERM] Permission is denied for the operation requested See Also setsysinfo(2) getsysinfo(2)