/* * This file is part of ixemul.library for the Amiga. * Copyright (C) 1991, 1992 Markus M. Wild * Portions Copyright (C) 1994 Rafael W. Luebbert * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include /* internal structure used by malloc(), kmalloc() and friends */ #if 0 struct malloc_data { struct Remember *md_key; unsigned int md_malloc_sbrk_used; struct mhead *md_nextf[30]; char md_busy[30]; int md_gotpool; }; #else struct malloc_data { struct MinList md_list; unsigned int md_malloc_sbrk_used; }; #endif /* * One structure allocated per session. */ struct session { int s_count; /* ref cnt; pgrps in session */ struct proc *s_leader; /* session leader */ struct vnode *s_ttyvp; /* vnode of controlling terminal */ struct tty *s_ttyp; /* controlling terminal */ char s_login[MAXLOGNAME]; /* setlogin() name */ }; /* * One structure allocated per process group. */ struct pgrp { struct pgrp *pg_hforw; /* forward link in hash bucket */ struct proc *pg_mem; /* pointer to pgrp members */ struct session *pg_session; /* pointer to session */ pid_t pg_id; /* pgrp id */ int pg_jobc; /* # procs qualifying pgrp for job control */ }; /* * Per process structure */ struct user { /* both a magic cookie and a way to get at the library base thru u */ struct ixemul_base *u_ixbase; /* 1.3 - signal management */ sig_t u_signal[NSIG]; /* disposition of signals */ int u_sigmask[NSIG]; /* signals to be blocked */ sigset_t u_sigonstack; /* signals to take on sigstack */ sigset_t u_sigintr; /* signals that interrupt syscalls */ sigset_t u_oldmask; /* saved mask from before sigpause */ struct sigstack u_sigstack; /* sp & on stack state variable */ #define u_onstack u_sigstack.ss_onstack #define u_sigsp u_sigstack.ss_sp int u_sig; /* for core dump/debugger XXX */ int u_code; /* for core dump/debugger XXX */ int p_flag; /* process flags, as necessary.. */ char p_stat; char p_xstat; /* what does this do... ? */ char p_cursig; sigset_t p_sig; /* signals pending to this process */ sigset_t p_sigmask; /* current signal mask */ sigset_t p_sigignore; /* signals being ignored */ sigset_t p_sigcatch; /* signals being caught by user */ caddr_t p_wchan; /* event process is awaiting */ /* 1.4 - descriptor management (for shared library version) */ struct file *u_ofile[NOFILE]; /* file structures for open files */ char u_pofile[NOFILE]; /* per-process flags of open files */ int u_lastfile; /* high-water mark of u_ofile */ #define UF_EXCLOSE 0x1 /* auto-close on exec */ short u_cmask; /* mask for file creation */ /* 1.5 - timing and statistics */ struct rusage u_ru; /* stats for this proc */ struct rusage u_cru; /* sum of stats for reaped children */ struct itimerval u_timer[3]; struct timeval u_start; short u_acflag; struct uprof { /* profile arguments */ short *pr_base; /* buffer base */ unsigned pr_size; /* buffer size */ unsigned pr_off; /* pc offset */ unsigned pr_scale; /* pc scaling */ } u_prof; /* 1.6 - resource controls */ struct rlimit u_rlimit[RLIM_NLIMITS]; /* amiga specific stuff */ struct malloc_data u_md; struct MsgPort *u_sync_mp; /* PA_SIGNAL message port */ struct timerequest *u_time_req; int *u_errno; BPTR u_startup_cd; int u_ringring; /* used in sleep.c and usleep.c */ char ***u_environ; /* used to handle amigados signals. see SIGMSG */ u_int u_lastrcvsig; char u_sleep_sig; /* c-startup stuff */ jmp_buf u_jmp_buf; char *u_argline; u_int u_arglinelen; int u_expand_cmd_line; struct atexit *u_atexit; char u_getenv_buf[255]; UBYTE u_otask_flags; void (*u_olaunch)(); APTR u_otrap_code; APTR u_otrap_data; struct Interrupt u_itimerint; /* 1 interrupt / task */ int p_pgrp; /* process group */ char *u_strtok_last; /* moved with 37.8 */ /* vfork() support */ struct MinList p_zombies; /* list of death messages */ int p_zombie_sig; /* signal to set when a child died */ struct Process *p_pptr; /* parent */ struct Process *p_cptr; /* last recently created child */ struct Process *p_osptr; /* older sybling */ struct Process *p_ysptr; /* younger sybling */ struct vfork_msg *p_vfork_msg; #if 0 /* moved to global space (ix_async_mp) */ struct MsgPort *u_async_mp; /* PA_SOFTINT message port */ #else long u_rese0; #endif void (*u_oswitch)(); /* stdio support comes here */ char u_tmpnam_buf[MAXPATHLEN]; /* quite large.. */ #include struct glue u_sglue; /* the 3 `standard' FILE pointers (!) are here */ void *u_sF[3]; /* vfork() support #2 */ void *u_save_sp; /* when vfork'd, this is the `real' sp */ jmp_buf u_vfork_frame; /* for the parent in vfork () */ u_int u_mini_stack[1000]; /* 4K stack while in vfork () */ /* stack watcher. When usp < u_red_zone && ix.ix_watch_stack -> SIGSEGV */ void *u_red_zone; /* base relative support. This even works for pure programs ! */ u_int u_a4; /* currently there's just 1, meaning don't trace me */ u_int u_trace_flags; /* this is for getmntinfo() */ struct statfs *u_mntbuf; int u_mntsize; long u_bufsize; /* this is for SIGWINCH support. */ struct IOStdReq *u_idev_req; struct Window *u_window; /* the watched window */ struct Interrupt u_idev_int; /* for `ps' (or dump as it's called for now.. ) */ char *p_wmesg; /* new support for `real' process groups, control ttys etc.. */ struct user *p_pgrpnxt; struct pgrp *p_pgrpptr; struct Process *p_exec_proc; /* to get back to struct Process */ /* to be able to switch memory lists on the fly, as required when vfork'd processes are supposed to allocate memory from their parents pool until they detach. */ struct malloc_data *u_mdp; /* data needed for network support */ int u_sigurg; int u_sigio; void *u_InetBase; }; /* flag codes */ #define SLOAD 0x0000001 /* in core */ #define SSYS 0x0000002 /* swapper or pager process */ #define SLOCK 0x0000004 /* process being swapped out */ #define SSWAP 0x0000008 /* save area flag */ #define STRC 0x0000010 /* process is being traced */ #define SWTED 0x0000020 /* parent has been told that this process stopped */ #define SULOCK 0x0000040 /* user settable lock in core */ #define SNOCLDSTOP 0x0000080 /* tc_Launch has to take a signal next time */ #define SFREEA4 0x0000100 /* we allocated memory for a4, free it */ #define SOMASK 0x0000200 /* restore old mask after taking signal */ #define SWEXIT 0x0000400 /* working on exiting */ #define SPHYSIO 0x0000800 /* doing physical i/o (bio.c) */ #define SVFORK 0x0001000 /* process resulted from vfork() */ #define SVFDONE 0x0002000 /* another vfork flag */ #define SNOVM 0x0004000 /* no vm, parent in a vfork() */ #define SPAGI 0x0008000 /* init data space on demand, from inode */ #define SSEQL 0x0010000 /* user warned of sequential vm behavior */ #define SUANOM 0x0020000 /* user warned of random vm behavior */ #define STIMO 0x0040000 /* timing out during sleep */ #define SORPHAN 0x0080000 /* process is orphaned (can't be ^Z'ed) */ #define STRACNG 0x0100000 /* process is tracing another process */ #define SOWEUPC 0x0200000 /* owe process an addupc() call at next ast */ #define SSEL 0x0400000 /* selecting; wakeup/waiting danger */ #define SLOGIN 0x0800000 /* a login process (legit child of init) */ /* stat codes */ #define SSLEEP 1 /* awaiting an event */ #define SWAIT 2 /* (abandoned state) */ #define SRUN 3 /* running */ #define SIDL 4 /* intermediate state in process creation */ #define SZOMB 5 /* has exited, waiting for parent to pick up status */ #define SSTOP 6 /* stopped */