From 7f9aa175d6c9923a3f703d76d797a04ee9dbe968 Mon Sep 17 00:00:00 2001 From: marting Date: Thu, 14 Oct 1999 16:25:18 +0000 Subject: [PATCH] added linux/ from 0.5.2 but s48_ adapted --- scsh/linux/Makefile.inc | 0 scsh/linux/bufpol.scm | 13 +++ scsh/linux/errno.scm | 126 ++++++++++++++++++++++ scsh/linux/fdflags.scm | 57 ++++++++++ scsh/linux/fix_stdio.c | 79 ++++++++++++++ scsh/linux/libansi.c | 6 ++ scsh/linux/netconst.scm | 128 +++++++++++++++++++++++ scsh/linux/packages.scm | 125 ++++++++++++++++++++++ scsh/linux/signals.scm | 45 ++++++++ scsh/linux/signals1.c | 52 +++++++++ scsh/linux/sigset.h | 10 ++ scsh/linux/stdio_dep.c | 80 ++++++++++++++ scsh/linux/stdio_dep.h | 13 +++ scsh/linux/sysdep.h | 0 scsh/linux/time_dep.scm | 8 ++ scsh/linux/time_dep1.c | 38 +++++++ scsh/linux/tty-consts.scm | 215 ++++++++++++++++++++++++++++++++++++++ scsh/linux/waitcodes.scm | 40 +++++++ 18 files changed, 1035 insertions(+) create mode 100644 scsh/linux/Makefile.inc create mode 100644 scsh/linux/bufpol.scm create mode 100644 scsh/linux/errno.scm create mode 100644 scsh/linux/fdflags.scm create mode 100644 scsh/linux/fix_stdio.c create mode 100644 scsh/linux/libansi.c create mode 100644 scsh/linux/netconst.scm create mode 100644 scsh/linux/packages.scm create mode 100644 scsh/linux/signals.scm create mode 100644 scsh/linux/signals1.c create mode 100644 scsh/linux/sigset.h create mode 100644 scsh/linux/stdio_dep.c create mode 100644 scsh/linux/stdio_dep.h create mode 100644 scsh/linux/sysdep.h create mode 100644 scsh/linux/time_dep.scm create mode 100644 scsh/linux/time_dep1.c create mode 100644 scsh/linux/tty-consts.scm create mode 100644 scsh/linux/waitcodes.scm diff --git a/scsh/linux/Makefile.inc b/scsh/linux/Makefile.inc new file mode 100644 index 0000000..e69de29 diff --git a/scsh/linux/bufpol.scm b/scsh/linux/bufpol.scm new file mode 100644 index 0000000..d314b8a --- /dev/null +++ b/scsh/linux/bufpol.scm @@ -0,0 +1,13 @@ +;;; Flags that control buffering policy. +;;; Copyright (c) 1993 by Olin Shivers. See file COPYING. +;;; Copyright (c) 1995 by Brian D. Carlstrom. + +;;; These are for the SET-PORT-BUFFERING procedure, essentially a Scheme +;;; analog of the setbuf(3S) stdio call. We use the actual stdio values. +;;; These constants are not likely to change from stdio lib to stdio lib, +;;; but you need to check when you do a port. + +(define-enum-constants bufpol + (block 0) ; _IOFBF + (line 1) ; _IOLBF + (none 2)) ; _IONBF diff --git a/scsh/linux/errno.scm b/scsh/linux/errno.scm new file mode 100644 index 0000000..d260b49 --- /dev/null +++ b/scsh/linux/errno.scm @@ -0,0 +1,126 @@ +;;; Errno constant definitions. +;;; Copyright (c) 1993 by Olin Shivers. See file COPYING. +;;; Copyright (c) 1994 by Brian D. Carlstrom. + +;;; These are the correct values for Linux systems. + +(define errno/2big 7) ; 2big is not a legit Scheme symbol. Lose, lose. + +(define-enum-constants errno + (perm 1) ; Not super-user + (noent 2) ; No such file or directory + (srch 3) ; No such process + (intr 4) ; Interrupted system call + (io 5) ; I/O error + (nxio 6) ; No such device or address + (2big 7) ; Arg list too long + (noexec 8) ; Exec format error + (badf 9) ; Bad file number + (child 10) ; No children + (again 11) ; No more processes + (wouldblock 11) ; EAGAIN again + (nomem 12) ; Not enough core + (acces 13) ; Permission denied + (fault 14) ; Bad address + (notblk 15) ; Block device required + (busy 16) ; Mount device busy + (exist 17) ; File exists + (xdev 18) ; Cross-device link + (nodev 19) ; No such device + (notdir 20) ; Not a directory + (isdir 21) ; Is a directory + (inval 22) ; Invalid argument + (nfile 23) ; Too many open files in system + (mfile 24) ; Too many open files + (notty 25) ; Not a typewriter + (txtbsy 26) ; Text file busy + (fbig 27) ; File too large + (nospc 28) ; No space left on device + (spipe 29) ; Illegal seek + (rofs 30) ; Read only file system + (mlink 31) ; Too many links + (pipe 32) ; Broken pipe + (dom 33) ; Math arg out of domain of func + (range 34) ; Math result not representable + (nomsg 35) ; No message of desired type + (idrm 36) ; Identifier removed + (chrng 37) ; Channel number out of range + (l2nsync 38) ; Level 2 not synchronized + (l3hlt 39) ; Level 3 halted + (l3rst 40) ; Level 3 reset + (lnrng 41) ; Link number out of range + (unatch 42) ; Protocol driver not attached + (nocsi 43) ; No CSI structure available + (l2hlt 44) ; Level 2 halted + (deadlk 45) ; Deadlock condition + (nolck 46) ; No record locks available + (bade 50) ; Invalid exchange + (badr 51) ; Invalid request descriptor + (xfull 52) ; Exchange full + (noano 53) ; No anode + (badrqc 54) ; Invalid request code + (badslt 55) ; Invalid slot + (deadlock 56) ; File locking deadlock error + (bfont 57) ; Bad font file fmt + (nostr 60) ; Device not a stream + (nodata 61) ; No data (for no delay io) + (time 62) ; Timer expired + (nosr 63) ; Out of streams resources + (nonet 64) ; Machine is not on the network + (nopkg 65) ; Package not installed + (remote 66) ; The object is remote + (nolink 67) ; The link has been severed + (adv 68) ; Advertise error + (srmnt 69) ; Srmount error + (comm 70) ; Communication error on send + (proto 71) ; Protocol error + (multihop 74) ; Multihop attempted + (lbin 75) ; Inode is remote (not really error) + (dotdot 76) ; Cross mount point (not really error) + (badmsg 77) ; Trying to read unreadable message + (notuniq 80) ; Given log. name not unique + (badfd 81) ; f.d. invalid for this operation + (remchg 82) ; Remote address changed + (libacc 83) ; Can't access a needed shared lib + (libbad 84) ; Accessing a corrupted shared lib + (libscn 85) ; .lib section in a.out corrupted + (libmax 86) ; Attempting to link in too many libs + (libexec 87) ; Attempting to exec a shared library + (nosys 88) ; Function not implemented + (nmfile 89) ; No more files + (notempty 90) ; Directory not empty + (nametoolong 91) ; File or path name too long + (loop 92) ; Too many symbolic links + (opnotsupp 95) ; Operation not supported on transport endpoint + (pfnosupport 96) ; Protocol family not supported + (connreset 104) ; Connection reset by peer + (nobufs 105) ; No buffer space available + (afnosupport 106) ; + (prototype 107) ; + (notsock 108) ; + (noprotoopt 109) ; + (shutdown 110) ; + (connrefused 111) ; Connection refused + (addrinuse 112) ; Address already in use + (connaborted 113) ; Connection aborted + (netunreach 114) ; + (netdown 115) ; + (timedout 116) ; + (hostdown 117) ; + (hostunreach 118) ; + (inprogress 119) ; + (already 120) ; + (destaddrreq 121) ; + (msgsize 122) ; + (protonosupport 123) ; + (socktnosupport 124) ; + (addrnotavail 125) ; + (netreset 126) ; + (isconn 127) ; + (notconn 128) ; + (toomanyrefs 129) ; + (proclim 130) ; + (users 131) ; + (dquot 132) ; + (stale 133) ; + (notsup 134)) ; diff --git a/scsh/linux/fdflags.scm b/scsh/linux/fdflags.scm new file mode 100644 index 0000000..3f14fe2 --- /dev/null +++ b/scsh/linux/fdflags.scm @@ -0,0 +1,57 @@ +;;; Flags for open(2) and fcntl(2). +;;; Copyright (c) 1993 by Olin Shivers. See file COPYING. +;;; Copyright (c) 1994 by Brian D. Carlstrom + +(define-enum-constants open + ;; POSIX + (read #x0000) + (write #x0001) + (read+write #x0002) + (non-blocking #x0800) ; no delay + (append #x0400) ; set append mode + + ;; Linux + (shared-lock #x0004) ; open with shared file lock + (exclusive-lock #x0008) ; open with exclusive file lock + (async #x2000) ; signal pgrep when data ready + (fsync #x1000) ; synchronus writes + + ;; POSIX + (create #x0040) ; create if nonexistant + (truncate #x0200) ; truncate to zero length + (exclusive #x0080) ; error if already exists + (no-control-tty #x0100)) ; don't assign controlling terminal + + + +(define open/access-mask + (bitwise-ior open/read + (bitwise-ior open/write open/read+write))) + +;;; fcntl() commands +(define-enum-constants fcntl + (dup-fdes 0) ; F_DUPFD + (get-fdes-flags 1) ; F_GETFD + (set-fdes-flags 2) ; F_SETFD + (get-status-flags 3) ; F_GETFL + (set-status-flags 4) ; F_SETFL + (get-owner 9) ; F_GETOWN (Not POSIX) + (set-owner 8) ; F_SETOWN (Not POSIX) + (get-record-lock 5) ; F_GETLK + (set-record-lock-no-block 6) ; F_SETLK + (set-record-lock 7)) ; F_SETLKW + +;;; fcntl fdes-flags (F_GETFD) + +(define fdflags/close-on-exec 1) + +;;; fcntl status-flags (F_GETFL) +;;; Mostly, these are OPEN/... flags, like OPEN/APPEND. +;;; (define fdstatus/... ...) + +;;; fcntl lock values. + +(define-enum-constants lock + (read 0) ; F_RDLCK + (release 2) ; F_UNLCK + (write 1)) ; F_WRLCK diff --git a/scsh/linux/fix_stdio.c b/scsh/linux/fix_stdio.c new file mode 100644 index 0000000..eefcf78 --- /dev/null +++ b/scsh/linux/fix_stdio.c @@ -0,0 +1,79 @@ +#include + +/* The current stdio lib that Linux uses has a problem that screws up +** scsh's interrupt system: when a stdio function such as getc() or fputs() +** blocks in an i/o system call, and that system call is interrupted, the +** stdio function realises this and loops, retrying the the i/o operation. +** What we need is for the stdio function to return an error, with +** errno=EINTR -- i.e., we need for the stdio function to give control back +** to the caller, telling it that the i/o call was interrupted. +** +** The EINTR error return is in fact mandated by Posix. The next release +** of the GNU libc will provide this functionality. The current release +** doesn't. So we use the workaround in this file. Calling +** remove_bone_from_head_of_linux_libc() +** will smash the call tables of the i/o library so that non-retrying +** functions get called to do the i/o system calls. +** +** Why does scsh need non-retry? Because in scsh, Unix signals are *not* +** handled by the actual Unix signal handler. The signal handler is just +** a piece of C code that sets a bit, notifying the S48 vm that it needs +** to service a signal. When the vm gets to a vm instruction boundary, +** it suspends execution of the program and services the interrupt by +** invoking a *Scheme* function. In this way, we can interrupt on VM +** instruction boundaries with VM interrupt handlers. +** +** If a C function retries when interrupted, we never return to Scheme, +** and so the vm never has a chance to service the interrupt. This is bad. +** +** This code was contributed by Roland McGrath. +*/ + +#ifdef __GLIBC__ + +/* GNU libc 2.0 needs no fixing. */ +void remove_bone_from_head_of_linux_libc () {} + +#else + +#include + +extern _IO_ssize_t _IO_file_read (_IO_FILE *, void *, _IO_ssize_t); +_IO_ssize_t +my_linux_file_read (_IO_FILE *fp, void *buf, _IO_ssize_t size) +{ + return read (fp->_fileno, buf, size); +} + +extern _IO_ssize_t _IO_file_write (_IO_FILE *, const void *, _IO_ssize_t); +_IO_ssize_t +my_linux_file_write (_IO_FILE *fp, const void *buf, _IO_ssize_t size) +{ + return write (fp->_fileno, buf, size); +} + +static void +debone (_IO_ssize_t (**jumptable) ()) +{ + _IO_ssize_t (**p) (); + int r, w; + r = w = 0; + for (p = jumptable; !r || !w; ++p) + { + if (*p == &_IO_file_read) + ++r, *p = &my_linux_file_read; + else if (*p == &_IO_file_write) + ++w, *p = &my_linux_file_write; + } +} + +void +remove_bone_from_head_of_linux_libc () +{ + extern _IO_ssize_t (*_IO_file_jumps[]) (); /* used for normal fds */ + extern _IO_ssize_t (*_IO_proc_jumps[]) (); /* used by popen */ + + debone (_IO_file_jumps); + debone (_IO_proc_jumps); +} +#endif diff --git a/scsh/linux/libansi.c b/scsh/linux/libansi.c new file mode 100644 index 0000000..fc24cfa --- /dev/null +++ b/scsh/linux/libansi.c @@ -0,0 +1,6 @@ +/* OS-dependent support for what is supposed to be the standard ANSI C Library. +** Copyright (c) 1996 by Brian D. Carlstrom. +*/ + +/* Bogus hack so we don't have to add another file to the Makefile list. */ +#include "fix_stdio.c" diff --git a/scsh/linux/netconst.scm b/scsh/linux/netconst.scm new file mode 100644 index 0000000..d307b16 --- /dev/null +++ b/scsh/linux/netconst.scm @@ -0,0 +1,128 @@ +;;; Magic Numbers for Networking +;;; Copyright (c) 1994 by Brian D. Carlstrom. See file COPYING. + +;;; magic numbers not from header file +;;; but from man page +;;; why can't unix make up its mind +(define shutdown/receives 0) +(define shutdown/sends 1) +(define shutdown/sends+receives 2) + +;;;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- +;;; BELOW THIS POINT ARE BITS FROM: +;;; +;;; +;;; +;;; +;;; +;;;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- + +;;; ADDRESS FAMILIES -- +(define address-family/unspecified 0) ; unspecified +(define address-family/unix 1) ; local to host (pipes, portals) +(define address-family/internet 2) ; internetwork: UDP, TCP, etc. + +;;; SOCKET TYPES -- +(define socket-type/stream 1) ; stream socket +(define socket-type/datagram 2) ; datagram socket +(define socket-type/raw 3) ; raw-protocol interface +;;(define socket-type/rdm 4) ; reliably-delivered message +;;(define socket-type/seqpacket 5) ; sequenced packet stream + +;;; PROTOCOL FAMILIES -- +(define protocol-family/unspecified 0) ; unspecified +(define protocol-family/unix 1) ; local to host (pipes, portals) +(define protocol-family/internet 2) ; internetwork: UDP, TCP, etc. + +;;; Well know addresses -- +(define internet-address/any #x00000000) +(define internet-address/loopback #x7f000001) +(define internet-address/broadcast #xffffffff) ; must be masked + +;;; errors from host lookup -- +(define herror/host-not-found 1) ;Authoritative Answer Host not found +(define herror/try-again 2) ;Non-Authoritive Host not found, or SERVERFAIL +(define herror/no-recovery 3) ;Non recoverable errors, FORMERR, REFUSED, NOTIMP +(define herror/no-data 4) ;Valid name, no data record of requested type +(define herror/no-address herror/no-data) ;no address, look for MX record + +;;; flags for send/recv -- +(define message/out-of-band 1) ; process out-of-band data +(define message/peek 2) ; peek at incoming message +(define message/dont-route 4) ; send without using routing tables + +;;; protocol level for socket options -- +(define level/socket #x1) ; SOL_SOCKET: options for socket level + +;;; socket options -- +(define socket/debug 1) ; turn on debugging info recording +;(define socket/accept-connect #x0002) ; socket has had listen() +(define socket/reuse-address 2) ; allow local address reuse +(define socket/keep-alive 9) ; keep connections alive +(define socket/dont-route 5) ; just use interface addresses +(define socket/broadcast 6) ; permit sending of broadcast msgs +;(define socket/use-loop-back #x0040) ; bypass hardware when possible +(define socket/linger 13) ; linger on close if data present +(define socket/oob-inline 10) ; leave received OOB data in line +;(define socket/use-privileged #x4000) ; allocate from privileged port area +;(define socket/cant-signal #x8000) ; prevent SIGPIPE on SS_CANTSENDMORE +(define socket/send-buffer 7) ; send buffer size +(define socket/receive-buffer 8) ; receive buffer size +;(define socket/send-low-water #x1003) ; send low-water mark +;(define socket/receive-low-water #x1004) ; receive low-water mark +;(define socket/send-timeout #x1005) ; send timeout +;(define socket/receive-timeout #x1006) ; receive timeout +(define socket/error 4) ; get error status and clear +(define socket/type 3) ; get socket type +(define socket/no-check 11) ; linux +(define socket/priority 12) ; sucks + +;;; ip options -- +(define ip/type-of-service 1) ; set/get IP type of service value +(define ip/time-to-live 2) ; set/get IP time-to-live value +(define ip/include-header 3) ; include header with data +(define ip/options 4) ; set/get IP per-packet options + +;;; tcp options -- +(define tcp/no-delay #x01) ; don't delay send to coalesce packets +(define tcp/max-segment #x02) ; set maximum segment size + +;;; -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- +;;; OPTION SETS FOR SOCKET-OPTION AND SET-SOCKET-OPTION + +;;; Boolean Options +(define options/boolean + (list socket/debug +; socket/accept-connect + socket/reuse-address + socket/keep-alive + socket/dont-route + socket/broadcast +; socket/use-loop-back + socket/oob-inline +; socket/use-privileged +; socket/cant-signal + ip/include-header + tcp/no-delay)) + +;;; Integer Options +(define options/value + (list socket/send-buffer + socket/receive-buffer +; socket/send-low-water +; socket/receive-low-water + socket/error + socket/type + ip/time-to-live + ip/type-of-service + tcp/max-segment)) + +;;; #f or Positive Integer +(define options/linger + (list socket/linger)) + +;;; Real Number +(define options/timeout + (list ;socket/send-timeout + ;socket/receive-timeout + )) diff --git a/scsh/linux/packages.scm b/scsh/linux/packages.scm new file mode 100644 index 0000000..dbcaae8 --- /dev/null +++ b/scsh/linux/packages.scm @@ -0,0 +1,125 @@ +;;; Interfaces and packages for the Linux specific parts of scsh. +;;; Copyright (c) 1994 by Olin Shivers. See file COPYING. +;;; Copyright (c) 1994 by Brian D. Carlstrom. + +(define-interface linux-fdflags-extras-interface + (export open/shared-lock + open/exclusive-lock + open/async + open/fsync + fcntl/get-owner + fcntl/set-owner)) + +(define-interface linux-errno-extras-interface + (export errno/notblk + errno/txtbsy + errno/wouldblock + errno/inprogress + errno/already + errno/notsock + errno/destaddrreq + errno/msgsize + errno/prototype + errno/noprotoopt + errno/protonosupport + errno/socktnosupport + errno/opnotsupp + errno/pfnosupport + errno/afnosupport + errno/addrinuse + errno/addrnotavail + errno/netdown + errno/netunreach + errno/netreset + errno/connaborted + errno/connreset + errno/nobufs + errno/isconn + errno/notconn + errno/shutdown + errno/toomanyrefs + errno/timedout + errno/connrefused + errno/loop + errno/hostdown + errno/hostunreach +; errno/proclim + errno/users + errno/dquot + errno/stale + errno/remote +; errno/badrpc +; errno/rpcmismatch +; errno/progunavail +; errno/progmismatch +; errno/ftype +; errno/auth +; errno/needauth +; errno/last + )) + +(define-interface linux-signals-extras-interface + (export signal/trap +; signal/emt + signal/bus +; signal/sys + signal/urg + signal/cld + signal/io + signal/xcpu + signal/xfsz + signal/vtalrm + signal/prof + signal/winch + )) + + +(define-interface linux-network-extras-interface + (export socket/debug +; socket/accept-connect + socket/reuse-address + socket/keep-alive + socket/dont-route + socket/broadcast +; socket/use-loop-back + socket/linger + socket/oob-inline +; socket/use-privileged +; socket/cant-signal + socket/send-buffer + socket/receive-buffer +; socket/send-low-water +; socket/receive-low-water +; socket/send-timeout +; socket/receive-timeout + socket/error + socket/type + socket/no-check + socket/priority + ip/options + ip/time-to-live + ip/type-of-service ;linux + ip/include-header ;linux + tcp/no-delay + tcp/max-segment)) + +(define-interface linux-extras-interface + (compound-interface linux-errno-extras-interface + linux-fdflags-extras-interface + linux-network-extras-interface + linux-signals-extras-interface)) + +(define-interface linux-defs-interface + (compound-interface linux-extras-interface + sockets-network-interface + posix-errno-interface + posix-fdflags-interface + posix-signals-interface + signals-internals-interface)) + +(define-structure linux-defs linux-defs-interface + (open scheme bitwise defenum-package) + (files fdflags errno signals netconst)) + +(define-interface os-extras-interface linux-extras-interface) +(define os-dependent linux-defs) diff --git a/scsh/linux/signals.scm b/scsh/linux/signals.scm new file mode 100644 index 0000000..4e297f7 --- /dev/null +++ b/scsh/linux/signals.scm @@ -0,0 +1,45 @@ +;;; Signal constant definitions for Linux +;;; Copyright (c) 1994 by Olin Shivers. See file COPYING. +;;; Copyright (c) 1994 by Brian D. Carlstrom. + +(define-enum-constants signal + ;; POSIX + (hup 1) + (int 2) + (quit 3) + (ill 4) + (trap 5) + (abrt 6) + (iot 6) + (bus 7) + (fpe 8) + (kill 9) + (usr1 10) + (segv 11) + (usr2 12) + (pipe 13) + (alrm 14) + (term 15) + (stkflt 16) + (chld 17) + (cld 17) ;compat + (cont 18) + (stop 19) + (tstp 20) + (ttin 21) + (ttou 22) + (urg 23) + (xcpu 24) + (xfsz 25) + (vtalrm 26) + (prof 27) + (winch 28) + (io 29) + (poll 29) + (pwr 30) + (unused 31) + ) + +(define signals-ignored-by-default + (list signal/chld signal/cont signal/winch)) + diff --git a/scsh/linux/signals1.c b/scsh/linux/signals1.c new file mode 100644 index 0000000..ee71a34 --- /dev/null +++ b/scsh/linux/signals1.c @@ -0,0 +1,52 @@ +/* This is bogus -- currently unchanged from the bsd file. */ +/* Need to turn off synchronous error signals (SIGPIPE, SIGSYS). */ + +#include "../scsh_aux.h" + +/* Make sure our exports match up w/the implementation: */ +#include "../signals1.h" + +/* This table converts Unix signal numbers to S48/scsh interrupt numbers. +** If the signal doesn't have an interrupt number, the entry is -1. +** (Only asynchronous signals have interrupt numbers.) +** +** Note that we bake into this table the integer values of the signals -- +** i.e., we assume that SIGHUP=1, SIGALRM=15, etc. So this definition is +** very system-dependent. +*/ +const int sig2int[] = { + -1, /* 0 is not a signal */ + scshint_hup, /* SIGHUP */ + scshint_keyboard, /* SIGINT */ + scshint_quit, /* SIGQUIT */ + -1, /* SIGILL */ + -1, /* SIGTRAP */ + -1, /* SIGABRT & SIGIOT */ + -1, /* SIGBUS */ + -1, /* SIGFPE */ + -1, /* SIGKILL */ + scshint_usr1, /* SIGUSR1 */ + -1, /* SIGSEGV */ + scshint_usr2, /* SIGUSR2 */ + -1, /* SIGPIPE */ + scshint_alarm, /* SIGALRM */ + scshint_term, /* SIGTERM */ + -1, /* SIGTKFLT (x86 coprocessor stack fault) */ + scshint_chld, /* SIGCHLD */ + scshint_cont, /* SIGCONT */ + -1, /* SIGSTOP */ + scshint_tstp, /* SIGTSTP */ + -1, /* scshint_ttyin, /* SIGTTIN */ + -1, /* scshint_ttou, /* SIGTTOU */ + scshint_urg, /* SIGURG */ + scshint_xcpu, /* SIGXCPU */ + scshint_xfsz, /* SIGXFSZ */ + scshint_vtalrm, /* SIGVTALRM */ + scshint_prof, /* SIGPROF */ + scshint_winch, /* SIGWINCH */ + scshint_io, /* SIGIO aka SIGPOLL*/ + scshint_pwr, /* SIGPWR */ + -1 /* SIGPWR */ + }; + +const int max_sig = 31; /* SIGUNUSED */ diff --git a/scsh/linux/sigset.h b/scsh/linux/sigset.h new file mode 100644 index 0000000..7f04c5b --- /dev/null +++ b/scsh/linux/sigset.h @@ -0,0 +1,10 @@ +/* Convert between a lo24/hi integer-pair bitset and a sigset_t value. +** These macros are OS-dependent, and must be defined per-OS. +*/ + +#define make_sigset(maskp, hi, lo) \ + ((maskp)->__val[0] = (unsigned long int) ((hi) << 24) | (lo)) + +#define split_sigset(mask, hip, lop)\ + ((*(hip) = ((mask).__val[0] >> 24) & 0xff),\ + (*(lop) = ((mask).__val[0] & 0xffffff))) diff --git a/scsh/linux/stdio_dep.c b/scsh/linux/stdio_dep.c new file mode 100644 index 0000000..5cfbd46 --- /dev/null +++ b/scsh/linux/stdio_dep.c @@ -0,0 +1,80 @@ +/* Copyright (c) 1994 by Olin Shivers. +** Copyright (c) 1994-1995 by Brian D. Carlstrom. +** +** This file implements the char-ready? procedure for file descriptors +** and Scsh's fdports. It is not Posix, so it must be implemented for +** each OS to which scsh is ported. +** +** This version assumes two things: +** - the existence of select to tell if there is data +** available for the file descriptor. +** - the existence of the _cnt field in the stdio FILE struct, telling +** if there is any buffered input in the struct. +** +** Most Unixes have these things, so this file should work for them. +** However, Your Mileage May Vary. +** +** You could also replace the select() with a iotctl(FIONREAD) call, if you +** had one but not the other. +** -Olin&Brian +*/ + +#include +#include +#include +#include +#include "libcig.h" +#include + +#include "stdio_dep.h" /* Make sure the .h interface agrees with the code. */ + +/* These two procs return #t if data ready, #f data not ready, +** and errno if error. +*/ + +s48_value char_ready_fdes(int fd) +{ + fd_set readfds; + struct timeval timeout; + int result; + + FD_ZERO(&readfds); + FD_SET(fd,&readfds); + + timeout.tv_sec=0; + timeout.tv_usec=0; + + result=select(fd+1, &readfds, NULL, NULL, &timeout); + + if(result == -1 ) + return(s48_enter_fixnum(errno)); + if(result) + return(S48_TRUE); + return(S48_FALSE); +} + +s48_value stream_char_readyp(FILE *f) +{ + int fd = fileno(f); + return (f->_IO_read_ptr < f->_IO_read_end) ? S48_TRUE : char_ready_fdes(fd); +} + +void setfileno(FILE *fs, int fd) +{ + fs->_fileno = fd; +} + +int fbufcount(FILE *fs) +{ + return((fs->_IO_read_end)-(fs->_IO_read_ptr)); +} + +int ibuf_empty(FILE *fs) +{ + return((fs->_IO_read_end)-(fs->_IO_read_ptr) <= 0); +} + +int obuf_full(FILE *fs) +{ + return((fs->_IO_write_end)-(fs->_IO_write_ptr) <= 0); +} diff --git a/scsh/linux/stdio_dep.h b/scsh/linux/stdio_dep.h new file mode 100644 index 0000000..435ebf0 --- /dev/null +++ b/scsh/linux/stdio_dep.h @@ -0,0 +1,13 @@ +/* Exports from stdio_dep.h. */ + +s48_value char_ready_fdes(int fd); + +s48_value stream_char_readyp(FILE *f); + +void setfileno(FILE *fs, int fd); + +int fbufcount(FILE* fs); + +int ibuf_empty(FILE *fs); + +int obuf_full(FILE *fs); diff --git a/scsh/linux/sysdep.h b/scsh/linux/sysdep.h new file mode 100644 index 0000000..e69de29 diff --git a/scsh/linux/time_dep.scm b/scsh/linux/time_dep.scm new file mode 100644 index 0000000..b9b2063 --- /dev/null +++ b/scsh/linux/time_dep.scm @@ -0,0 +1,8 @@ +;;; OS-dependent time stuff +;;; Copyright (c) 1995 by Olin Shivers. See file COPYING. + +;;; This suffices for BSD systems with the gettimeofday() +;;; microsecond-resolution timer. + +(define (ticks/sec) 1000000) ; usec + diff --git a/scsh/linux/time_dep1.c b/scsh/linux/time_dep1.c new file mode 100644 index 0000000..8e799e0 --- /dev/null +++ b/scsh/linux/time_dep1.c @@ -0,0 +1,38 @@ +/* OS-dependent support for fine-grained timer. +** Copyright (c) 1995 by Olin Shivers. +** +** We return the current time in seconds and sub-second "ticks" where the +** number of ticks/second is OS dependent (and is defined in time_dep.scm). +** This definition works on any BSD Unix with the gettimeofday() +** microsecond-resolution timer. +*/ + +#include +#include +#include "scheme48.h" +#include "../time1.h" + +/* Sux because it's dependent on 32-bitness. */ +#define hi8(i) (((i)>>24) & 0xff) +#define lo24(i) ((i) & 0xffffff) +#define comp8_24(hi, lo) (((hi)<<24) + (lo)) + +s48_value time_plus_ticks(int *hi_secs, int *lo_secs, + int *hi_ticks, int *lo_ticks) +{ + struct timeval t; + struct timezone tz; + + if( gettimeofday(&t, &tz) ) return s48_enter_fixnum(errno); + + { long int secs = t.tv_sec; + long int ticks = t.tv_usec; + + *hi_secs = hi8(secs); + *lo_secs = lo24(secs); + *hi_ticks = hi8(ticks); + *lo_ticks = lo24(ticks); + } + + return S48_FALSE; + } diff --git a/scsh/linux/tty-consts.scm b/scsh/linux/tty-consts.scm new file mode 100644 index 0000000..20c4d2e --- /dev/null +++ b/scsh/linux/tty-consts.scm @@ -0,0 +1,215 @@ +;;; Constant definitions for tty control code (POSIX termios). +;;; Copyright (c) 1995 by Brian Carlstrom. See file COPYING. +;;; Largely rehacked by Olin. + +;;; These constants are for Solaris 2.x, +;;; and are taken from /usr/include/sys/termio.h +;;; and /usr/include/sys/termios.h. + +;;; Non-standard (POSIX, SVR4, 4.3+BSD) things: +;;; - Some of the baud rates. + + +;;; Special Control Characters +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;;; Indices into the c_cc[] character array. + +;;; Name Subscript Enabled by +;;; ---- --------- ---------- +;;; POSIX +(define ttychar/eof 4) ; ^d icanon +(define ttychar/eol 11) ; icanon +(define ttychar/delete-char 2) ; ^? icanon +(define ttychar/delete-line 3) ; ^u icanon +(define ttychar/interrupt 0) ; ^c isig +(define ttychar/quit 1) ; ^\ isig +(define ttychar/suspend 10) ; ^z isig +(define ttychar/start 8) ; ^q ixon, ixoff +(define ttychar/stop 9) ; ^s ixon, ixoff +(define ttychar/min 6) ; !icanon ; Not exported +(define ttychar/time 5) ; !icanon ; Not exported + +;;; SVR4 & 4.3+BSD +(define ttychar/delete-word 14) ; ^w icanon +(define ttychar/reprint 12) ; ^r icanon +(define ttychar/literal-next 15) ; ^v iexten +(define ttychar/discard 13) ; ^o iexten +(define ttychar/delayed-suspend #f) ; ^y isig +(define ttychar/eol2 16) ; icanon + +;;; 4.3+BSD +(define ttychar/status #f) ; ^t icanon + +;;; Length of control-char string -- *Not Exported* +(define num-ttychars 19) + +;;; Magic "disable feature" tty character +(define disable-tty-char (ascii->char #x00)) ; _POSIX_VDISABLE + +;;; Flags controllling input processing +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +;;; POSIX +(define ttyin/ignore-break #o00001) ; ignbrk +(define ttyin/interrupt-on-break #o00002) ; brkint +(define ttyin/ignore-bad-parity-chars #o00004) ; ignpar +(define ttyin/mark-parity-errors #o00010) ; parmrk +(define ttyin/check-parity #o00020) ; inpck +(define ttyin/7bits #o00040) ; istrip +(define ttyin/nl->cr #o00100) ; inlcr +(define ttyin/ignore-cr #o00200) ; igncr +(define ttyin/cr->nl #o00400) ; icrnl +(define ttyin/output-flow-ctl #o02000) ; ixon +(define ttyin/input-flow-ctl #o10000) ; ixoff + +;;; SVR4 & 4.3+BSD +(define ttyin/xon-any #o4000) ; ixany: Any char restarts after stop +(define ttyin/beep-on-overflow #o20000) ; imaxbel: queue full => ring bell + +;;; SVR4 +(define ttyin/lowercase #o1000) ; iuclc: Map upper-case to lower case + + +;;; Flags controlling output processing +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +;;; POSIX +(define ttyout/enable #o000001) ; opost: enable output processing + +;;; SVR4 & 4.3+BSD +(define ttyout/nl->crnl #o000004) ; onlcr: map nl to cr-nl + +;;; 4.3+BSD +(define ttyout/discard-eot #f) ; onoeot +(define ttyout/expand-tabs #f) ; oxtabs (NOT xtabs) + +;;; SVR4 +(define ttyout/cr->nl #o000010) ; ocrnl +(define ttyout/fill-w/del #o000200) ; ofdel +(define ttyout/delay-w/fill-char #o000100) ; ofill +(define ttyout/uppercase #o000002) ; olcuc +(define ttyout/nl-does-cr #o000040) ; onlret +(define ttyout/no-col0-cr #o000020) ; onocr + +;;; Newline delay +(define ttyout/nl-delay #o000400) ; mask (nldly) +(define ttyout/nl-delay0 #o000000) +(define ttyout/nl-delay1 #o000400) ; tty 37 + +;;; Horizontal-tab delay +(define ttyout/tab-delay #o014000) ; mask (tabdly) +(define ttyout/tab-delay0 #o000000) +(define ttyout/tab-delay1 #o004000) ; tty 37 +(define ttyout/tab-delay2 #o010000) +(define ttyout/tab-delayx #o014000) ; Expand tabs (xtabs, tab3) + +;;; Carriage-return delay +(define ttyout/cr-delay #o003000) ; mask (crdly) +(define ttyout/cr-delay0 #o000000) +(define ttyout/cr-delay1 #o001000) ; tn 300 +(define ttyout/cr-delay2 #o002000) ; tty 37 +(define ttyout/cr-delay3 #o003000) ; concept 100 + +;;; Vertical tab delay +(define ttyout/vtab-delay #o040000) ; mask (vtdly) +(define ttyout/vtab-delay0 #o000000) +(define ttyout/vtab-delay1 #o040000) ; tty 37 + +;;; Backspace delay +(define ttyout/bs-delay #o020000) ; mask (bsdly) +(define ttyout/bs-delay0 #o000000) +(define ttyout/bs-delay1 #o020000) + +;;; Form-feed delay +(define ttyout/ff-delay #o100000) ; mask (ffdly) +(define ttyout/ff-delay0 #o000000) +(define ttyout/ff-delay1 #o100000) + +(define ttyout/all-delay + (bitwise-ior (bitwise-ior (bitwise-ior ttyout/nl-delay ttyout/tab-delay) + (bitwise-ior ttyout/cr-delay ttyout/vtab-delay)) + (bitwise-ior ttyout/bs-delay ttyout/ff-delay))) + + +;;; Control flags - hacking the serial-line. +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +;;; POSIX +(define ttyc/char-size #o00060) ; csize: character size mask +(define ttyc/char-size5 #o00000) ; 5 bits (cs5) +(define ttyc/char-size6 #o00020) ; 6 bits (cs6) +(define ttyc/char-size7 #o00040) ; 7 bits (cs7) +(define ttyc/char-size8 #o00060) ; 8 bits (cs8) +(define ttyc/2-stop-bits #o00100) ; cstopb: Send 2 stop bits. +(define ttyc/enable-read #o00200) ; cread: Enable receiver. +(define ttyc/enable-parity #o00400) ; parenb +(define ttyc/odd-parity #o01000) ; parodd +(define ttyc/hup-on-close #o02000) ; hupcl: Hang up on last close. +(define ttyc/no-modem-sync #o04000) ; clocal: Ignore modem lines. + +;;; 4.3+BSD +(define ttyc/ignore-flags #f) ; cignore: ignore control flags +(define ttyc/CTS-output-flow-ctl #f) ; ccts_oflow: CTS flow control of output +(define ttyc/RTS-input-flow-ctl #f) ; crts_iflow: RTS flow control of input +(define ttyc/carrier-flow-ctl #f) ; mdmbuf + +;;; Local flags -- hacking the tty driver / user interface. +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +;;; POSIX +(define ttyl/visual-delete #o020) ; echoe: Visually erase chars +(define ttyl/echo-delete-line #o040) ; echok: Echo nl after line kill +(define ttyl/echo #o010) ; echo: Enable echoing +(define ttyl/echo-nl #o100) ; echonl: Echo nl even if echo is off +(define ttyl/canonical #o002) ; icanon: Canonicalize input +(define ttyl/enable-signals #o001) ; isig: Enable ^c, ^z signalling +(define ttyl/extended #o100000) ; iexten: Enable extensions +(define ttyl/ttou-signal #o400) ; tostop: SIGTTOU on background output +(define ttyl/no-flush-on-interrupt #o200) ; noflsh + +;;; SVR4 & 4.3+BSD +(define ttyl/visual-delete-line #o04000); echoke: visually erase a line-kill +(define ttyl/hardcopy-delete #o02000); echoprt: visual erase for hardcopy +(define ttyl/echo-ctl #o01000); echoctl: echo control chars as "^X" +(define ttyl/flush-output #o10000); flusho: output is being flushed +(define ttyl/reprint-unread-chars #o40000); pendin: retype pending input + +;;; 4.3+BSD +(define ttyl/alt-delete-word #f) ; altwerase +(define ttyl/no-kernel-status #f) ; nokerninfo: no kernel status on ^T + +;;; SVR4 +(define ttyl/case-map #o4) ; xcase: canonical upper/lower presentation + +;;; Vector of (speed . code) pairs. + +(define baud-rates '#((0 . 0) (1 . 50) (2 . 75) + (3 . 110) (4 . 134) (5 . 150) + (6 . 200) (7 . 300) (8 . 600) + (9 . 1200) (10 . 1800) (11 . 2400) + (12 . 4800) (13 . 9600) (14 . 19200) + (15 . 38400) (14 . exta) (15 . extb))) + +;;; tcflush() constants +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +(define %flush-tty/input 0) ; TCIFLUSH +(define %flush-tty/output 1) ; TCOFLUSH +(define %flush-tty/both 2) ; TCIOFLUSH + + +;;; tcflow() constants +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +(define %tcflow/start-out 1) ; TCOON +(define %tcflow/stop-out 0) ; TCOOFF +(define %tcflow/start-in 3) ; TCION +(define %tcflow/stop-in 2) ; TCIOFF + + +;;; tcsetattr() constants +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +(define %set-tty-info/now 0) ; TCSANOW Make change immediately. +(define %set-tty-info/drain 1) ; TCSADRAIN Drain output, then change. +(define %set-tty-info/flush 2) ; TCSAFLUSH Drain output, flush input. diff --git a/scsh/linux/waitcodes.scm b/scsh/linux/waitcodes.scm new file mode 100644 index 0000000..002ef9e --- /dev/null +++ b/scsh/linux/waitcodes.scm @@ -0,0 +1,40 @@ +;;; Scsh routines for analysing exit codes returned by WAIT. +;;; Copyright (c) 1994 by Olin Shivers. See file COPYING. +;;; +;;; To port these to a new OS, consult /usr/include/sys/wait.h, +;;; and check the WIFEXITED, WEXITSTATUS, WIFSTOPPED, WSTOPSIG, +;;; WIFSIGNALED, and WTERMSIG macros for the magic fields they use. +;;; These definitions are for Linux. +;;; +;;; I could have done a portable version by making C calls for this, +;;; but it's such overkill. + + +;;; If process terminated normally, return the exit code, otw #f. + +(define (status:exit-val status) + (and (not (= (bitwise-and #xFF status) #x7F)) + (zero? (bitwise-and #x7F status)) + (bitwise-and #xFF (arithmetic-shift status -8)))) + + +;;; If the process was suspended, return the suspending signal, otw #f. + +(define (status:stop-sig status) + (and (= #x7F (bitwise-and status #xFF)) + (bitwise-and #xFF (arithmetic-shift status -8)))) + + +;;; If the process terminated abnormally, +;;; return the terminating signal, otw #f. + +(define (status:term-sig status) + (let ((termsig (bitwise-and status #x7F))) + (and (not (zero? termsig)) ; Didn't exit. + (not (= #x7F (bitwise-and status #xFF))) ; Not suspended. + termsig))) + + +;;; Flags. +(define wait/poll 1) ; Don't hang if nothing to wait for. +(define wait/stopped-children 2) ; Report on suspended subprocs, too.