+int os2_stat(const char *name, struct stat *st);
+int fork_with_resources();
+int setpriority(int which, int pid, int val);
+int getpriority(int which /* ignored */, int pid);
+
+void croak_with_os2error(char *s) __attribute__((noreturn));
+
+/* void return value */
+#define os2cp_croak(rc,msg) (CheckOSError(rc) && (croak_with_os2error(msg),0))
+
+/* propagates rc */
+#define os2win_croak(rc,msg) \
+ SaveCroakWinError((expr), 1 /* die */, /* no prefix */, (msg))
+
+/* propagates rc; use with functions which may return 0 on success */
+#define os2win_croak_0OK(rc,msg) \
+ SaveCroakWinError((ResetWinError, (expr)), \
+ 1 /* die */, /* no prefix */, (msg))
+
+#ifdef PERL_CORE
+int os2_do_spawn(pTHX_ char *cmd);
+int os2_do_aspawn(pTHX_ SV *really, SV **vmark, SV **vsp);
+#endif
+
+#ifndef LOG_DAEMON
+
+/* Replacement for syslog.h */
+# define LOG_EMERG 0 /* system is unusable */
+# define LOG_ALERT 1 /* action must be taken immediately */
+# define LOG_CRIT 2 /* critical conditions */
+# define LOG_ERR 3 /* error conditions */
+# define LOG_WARNING 4 /* warning conditions */
+# define LOG_NOTICE 5 /* normal but significant condition */
+# define LOG_INFO 6 /* informational */
+# define LOG_DEBUG 7 /* debug-level messages */
+
+# define LOG_PRIMASK 0x007 /* mask to extract priority part (internal) */
+ /* extract priority */
+# define LOG_PRI(p) ((p) & LOG_PRIMASK)
+# define LOG_MAKEPRI(fac, pri) (((fac) << 3) | (pri))
+
+/* facility codes */
+# define LOG_KERN (0<<3) /* kernel messages */
+# define LOG_USER (1<<3) /* random user-level messages */
+# define LOG_MAIL (2<<3) /* mail system */
+# define LOG_DAEMON (3<<3) /* system daemons */
+# define LOG_AUTH (4<<3) /* security/authorization messages */
+# define LOG_SYSLOG (5<<3) /* messages generated internally by syslogd */
+# define LOG_LPR (6<<3) /* line printer subsystem */
+# define LOG_NEWS (7<<3) /* network news subsystem */
+# define LOG_UUCP (8<<3) /* UUCP subsystem */
+# define LOG_CRON (15<<3) /* clock daemon */
+ /* other codes through 15 reserved for system use */
+# define LOG_LOCAL0 (16<<3) /* reserved for local use */
+# define LOG_LOCAL1 (17<<3) /* reserved for local use */
+# define LOG_LOCAL2 (18<<3) /* reserved for local use */
+# define LOG_LOCAL3 (19<<3) /* reserved for local use */
+# define LOG_LOCAL4 (20<<3) /* reserved for local use */
+# define LOG_LOCAL5 (21<<3) /* reserved for local use */
+# define LOG_LOCAL6 (22<<3) /* reserved for local use */
+# define LOG_LOCAL7 (23<<3) /* reserved for local use */
+
+# define LOG_NFACILITIES 24 /* current number of facilities */
+# define LOG_FACMASK 0x03f8 /* mask to extract facility part */
+ /* facility of pri */
+# define LOG_FAC(p) (((p) & LOG_FACMASK) >> 3)
+
+/*
+ * arguments to setlogmask.
+ */
+# define LOG_MASK(pri) (1 << (pri)) /* mask for one priority */
+# define LOG_UPTO(pri) ((1 << ((pri)+1)) - 1) /* all priorities through pri */
+
+/*
+ * Option flags for openlog.
+ *
+ * LOG_ODELAY no longer does anything.
+ * LOG_NDELAY is the inverse of what it used to be.
+ */
+# define LOG_PID 0x01 /* log the pid with each message */
+# define LOG_CONS 0x02 /* log on the console if errors in sending */
+# define LOG_ODELAY 0x04 /* delay open until first syslog() (default) */
+# define LOG_NDELAY 0x08 /* don't delay open */
+# define LOG_NOWAIT 0x10 /* don't wait for console forks: DEPRECATED */
+# define LOG_PERROR 0x20 /* log to stderr as well */
+
+#endif
+
+/* ************************************************* */
+#ifndef MAKEPLINFOSEG
+
+/* From $DDK\base32\rel\os2c\include\base\os2\16bit\infoseg.h + typedefs */
+
+/*
+ * The structure below defines the content and organization of the system
+ * information segment (InfoSeg). The actual table is statically defined in
+ * SDATA.ASM. Ring 0, read/write access is obtained by the clock device
+ * driver using the DevHlp GetDOSVar function. (GetDOSVar returns a ring 0,
+ * read-only selector to all other requestors.)
+ *
+ * In order to prevent an errant process from destroying the infoseg, two
+ * identical global infosegs are maintained. One is in the tiled shared
+ * arena and is accessible in user mode (and therefore can potentially be
+ * overwritten from ring 2), and the other is in the system arena and is
+ * accessible only in kernel mode. All kernel code (except the clock driver)
+ * is responsible for updating BOTH copies of the infoseg. The copy kept
+ * in the system arena is addressable as DOSGROUP:SISData, and the copy
+ * in the shared arena is addressable via a system arena alias. 16:16 and
+ * 0:32 pointers to the alias are stored in _Sis2.
+ */
+
+typedef struct InfoSegGDT {
+
+/* Time (offset 0x00) */
+
+unsigned long SIS_BigTime; /* Time from 1-1-1970 in seconds */
+unsigned long SIS_MsCount; /* Freerunning milliseconds counter */
+unsigned char SIS_HrsTime; /* Hours */
+unsigned char SIS_MinTime; /* Minutes */
+unsigned char SIS_SecTime; /* Seconds */
+unsigned char SIS_HunTime; /* Hundredths of seconds */
+unsigned short SIS_TimeZone; /* Timezone in min from GMT (Set to EST) */
+unsigned short SIS_ClkIntrvl; /* Timer interval (units=0.0001 secs) */
+
+/* Date (offset 0x10) */
+
+unsigned char SIS_DayDate; /* Day-of-month (1-31) */
+unsigned char SIS_MonDate; /* Month (1-12) */
+unsigned short SIS_YrsDate; /* Year (>= 1980) */
+unsigned char SIS_DOWDate; /* Day-of-week (1-1-80 = Tues = 3) */
+
+/* Version (offset 0x15) */
+
+unsigned char SIS_VerMajor; /* Major version number */
+unsigned char SIS_VerMinor; /* Minor version number */
+unsigned char SIS_RevLettr; /* Revision letter */
+
+/* System Status (offset 0x18) */
+
+unsigned char SIS_CurScrnGrp; /* Fgnd screen group # */
+unsigned char SIS_MaxScrnGrp; /* Maximum number of screen groups */
+unsigned char SIS_HugeShfCnt; /* Shift count for huge segments */
+unsigned char SIS_ProtMdOnly; /* Protect-mode-only indicator */
+unsigned short SIS_FgndPID; /* Foreground process ID */
+
+/* Scheduler Parms (offset 0x1E) */
+
+unsigned char SIS_Dynamic; /* Dynamic variation flag (1=enabled) */
+unsigned char SIS_MaxWait; /* Maxwait (seconds) */
+unsigned short SIS_MinSlice; /* Minimum timeslice (milliseconds) */
+unsigned short SIS_MaxSlice; /* Maximum timeslice (milliseconds) */
+
+/* Boot Drive (offset 0x24) */
+
+unsigned short SIS_BootDrv; /* Drive from which system was booted */
+
+/* RAS Major Event Code Table (offset 0x26) */
+
+unsigned char SIS_mec_table[32]; /* Table of RAS Major Event Codes (MECs) */
+
+/* Additional Session Data (offset 0x46) */
+
+unsigned char SIS_MaxVioWinSG; /* Max. no. of VIO windowable SG's */
+unsigned char SIS_MaxPresMgrSG; /* Max. no. of Presentation Manager SG's */
+
+/* Error logging Information (offset 0x48) */
+
+unsigned short SIS_SysLog; /* Error Logging Status */
+
+/* Additional RAS Information (offset 0x4A) */
+
+unsigned short SIS_MMIOBase; /* Memory mapped I/O selector */
+unsigned long SIS_MMIOAddr; /* Memory mapped I/O address */
+
+/* Additional 2.0 Data (offset 0x50) */
+
+unsigned char SIS_MaxVDMs; /* Max. no. of Virtual DOS machines */
+unsigned char SIS_Reserved;
+
+unsigned char SIS_perf_mec_table[32]; /* varga 6/5/97 Table of Performance Major Event Codes (MECS) varga*/
+} GINFOSEG, *PGINFOSEG;
+
+#define SIS_LEN sizeof(struct InfoSegGDT)
+
+/*
+ * InfoSeg LDT Data Segment Structure
+ *
+ * The structure below defines the content and organization of the system
+ * information in a special per-process segment to be accessible by the
+ * process through the LDT (read-only).
+ *
+ * As in the global infoseg, two copies of the current processes local
+ * infoseg exist, one accessible in both user and kernel mode, the other
+ * only in kernel mode. Kernel code is responsible for updating BOTH copies.
+ * Pointers to the local infoseg copy are stored in _Lis2.
+ *
+ * Note that only the currently running process has an extra copy of the
+ * local infoseg. The copy is done at context switch time.
+ */
+
+typedef struct InfoSegLDT {
+unsigned short LIS_CurProcID; /* Current process ID */
+unsigned short LIS_ParProcID; /* Process ID of parent */
+unsigned short LIS_CurThrdPri; /* Current thread priority */
+unsigned short LIS_CurThrdID; /* Current thread ID */
+unsigned short LIS_CurScrnGrp; /* Screengroup */
+unsigned char LIS_ProcStatus; /* Process status bits */
+unsigned char LIS_fillbyte1; /* filler byte */
+unsigned short LIS_Fgnd; /* Current process is in foreground */
+unsigned char LIS_ProcType; /* Current process type */
+unsigned char LIS_fillbyte2; /* filler byte */
+
+unsigned short LIS_AX; /* @@V1 Environment selector */
+unsigned short LIS_BX; /* @@V1 Offset of command line start */
+unsigned short LIS_CX; /* @@V1 Length of Data Segment */
+unsigned short LIS_DX; /* @@V1 STACKSIZE from the .EXE file */
+unsigned short LIS_SI; /* @@V1 HEAPSIZE from the .EXE file */
+unsigned short LIS_DI; /* @@V1 Module handle of the application */
+unsigned short LIS_DS; /* @@V1 Data Segment Handle of application */
+
+unsigned short LIS_PackSel; /* First tiled selector in this EXE */
+unsigned short LIS_PackShrSel; /* First selector above shared arena */
+unsigned short LIS_PackPckSel; /* First selector above packed arena */
+/* #ifdef SMP */
+unsigned long LIS_pTIB; /* Pointer to TIB */
+unsigned long LIS_pPIB; /* Pointer to PIB */
+/* #endif */
+} LINFOSEG, *PLINFOSEG;
+
+#define LIS_LEN sizeof(struct InfoSegLDT)
+
+
+/*
+ * Process Type codes
+ *
+ * These are the definitions for the codes stored
+ * in the LIS_ProcType field in the local infoseg.
+ */
+
+#define LIS_PT_FULLSCRN 0 /* Full screen app. */
+#define LIS_PT_REALMODE 1 /* Real mode process */
+#define LIS_PT_VIOWIN 2 /* VIO windowable app. */
+#define LIS_PT_PRESMGR 3 /* Presentation Manager app. */
+#define LIS_PT_DETACHED 4 /* Detached app. */
+
+
+/*
+ *
+ * Process Status Bit Definitions
+ *
+ */
+
+#define LIS_PS_EXITLIST 0x01 /* In exitlist handler */
+
+
+/*
+ * Flags equates for the Global Info Segment
+ * SIS_SysLog WORD in Global Info Segment
+ *
+ * xxxx xxxx xxxx xxx0 Error Logging Disabled
+ * xxxx xxxx xxxx xxx1 Error Logging Enabled
+ *
+ * xxxx xxxx xxxx xx0x Error Logging not available
+ * xxxx xxxx xxxx xx1x Error Logging available
+ */
+
+#define LF_LOGENABLE 0x0001 /* Logging enabled */
+#define LF_LOGAVAILABLE 0x0002 /* Logging available */
+
+#define MAKEPGINFOSEG(sel) ((PGINFOSEG)MAKEP(sel, 0))
+#define MAKEPLINFOSEG(sel) ((PLINFOSEG)MAKEP(sel, 0))
+
+#endif /* ndef(MAKEPLINFOSEG) */