diff options
Diffstat (limited to 'os2/os2.c')
| -rw-r--r-- | os2/os2.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/os2/os2.c b/os2/os2.c new file mode 100644 index 0000000000..f6c76082bd --- /dev/null +++ b/os2/os2.c @@ -0,0 +1,215 @@ +#define INCL_DOS +#define INCL_NOPM +#include <os2.h> + +/* + * Various Unix compatibility functions for OS/2 + */ + +#include <stdio.h> +#include <errno.h> +#include <limits.h> +#include <process.h> + +#include "EXTERN.h" +#include "perl.h" + +/*****************************************************************************/ +/* priorities */ + +int setpriority(int which, int pid, int val) +{ + return DosSetPriority((pid < 0) ? PRTYS_PROCESSTREE : PRTYS_PROCESS, + val >> 8, val & 0xFF, abs(pid)); +} + +int getpriority(int which /* ignored */, int pid) +{ + TIB *tib; + PIB *pib; + DosGetInfoBlocks(&tib, &pib); + return tib->tib_ptib2->tib2_ulpri; +} + +/*****************************************************************************/ +/* spawn */ + +static int +result(int flag, int pid) +{ + int r, status; + Signal_t (*ihand)(); /* place to save signal during system() */ + Signal_t (*qhand)(); /* place to save signal during system() */ + + if (pid < 0 || flag != 0) + return pid; + + ihand = signal(SIGINT, SIG_IGN); + qhand = signal(SIGQUIT, SIG_IGN); + r = waitpid(pid, &status, 0); + signal(SIGINT, ihand); + signal(SIGQUIT, qhand); + + statusvalue = (U16)status; + if (r < 0) + return -1; + return status & 0xFFFF; +} + +int +do_aspawn(really,mark,sp) +SV *really; +register SV **mark; +register SV **sp; +{ + register char **a; + char *tmps; + int rc; + int flag = P_WAIT, trueflag; + + if (sp > mark) { + New(401,Argv, sp - mark + 1, char*); + a = Argv; + + if (mark < sp && SvIOKp(*(mark+1))) { + ++mark; + flag = SvIVx(*mark); + } + + while (++mark <= sp) { + if (*mark) + *a++ = SvPVx(*mark, na); + else + *a++ = ""; + } + *a = Nullch; + + trueflag = flag; + if (flag == P_WAIT) + flag = P_NOWAIT; + + if (really && *(tmps = SvPV(really, na))) + rc = result(trueflag, spawnvp(flag,tmps,Argv)); + else + rc = result(trueflag, spawnvp(flag,Argv[0],Argv)); + + if (rc < 0 && dowarn) + warn("Can't spawn \"%s\": %s", Argv[0], Strerror(errno)); + } else + rc = -1; + do_execfree(); + return rc; +} + +int +do_spawn(cmd) +char *cmd; +{ + register char **a; + register char *s; + char flags[10]; + char *shell, *copt; + int rc; + + if ((shell = getenv("SHELL")) != NULL) + copt = "-c"; + else if ((shell = getenv("COMSPEC")) != NULL) + copt = "/C"; + else + shell = "cmd.exe"; + + /* save an extra exec if possible */ + /* see if there are shell metacharacters in it */ + + /*SUPPRESS 530*/ + if (*cmd == '@') { + ++cmd; + goto shell_cmd; + } + for (s = cmd; *s; s++) { + if (*s != ' ' && !isALPHA(*s) && strchr("%&|<>\n",*s)) { + if (*s == '\n' && !s[1]) { + *s = '\0'; + break; + } +shell_cmd: return result(P_WAIT, spawnl(P_NOWAIT,shell,shell,copt,cmd,(char*)0)); + } + } + New(402,Argv, (s - cmd) / 2 + 2, char*); + Cmd = savepvn(cmd, s-cmd); + a = Argv; + for (s = Cmd; *s;) { + while (*s && isSPACE(*s)) s++; + if (*s) + *(a++) = s; + while (*s && !isSPACE(*s)) s++; + if (*s) + *s++ = '\0'; + } + *a = Nullch; + if (Argv[0]) { + rc = result(P_WAIT, spawnvp(P_NOWAIT,Argv[0],Argv)); + if (rc < 0 && dowarn) + warn("Can't spawn \"%s\": %s", Argv[0], Strerror(errno)); + } else + rc = -1; + do_execfree(); + return rc; +} + +/*****************************************************************************/ + +#ifndef HAS_FORK +int +fork(void) +{ + die(no_func, "Unsupported function fork"); + errno = EINVAL; + return -1; +} +#endif + +/*****************************************************************************/ +/* not implemented in EMX 0.9a */ + +void * ctermid(x) { return 0; } +void * ttyname(x) { return 0; } + +void * gethostent() { return 0; } +void * getnetent() { return 0; } +void * getprotoent() { return 0; } +void * getservent() { return 0; } +void sethostent(x) {} +void setnetent(x) {} +void setprotoent(x) {} +void setservent(x) {} +void endhostent(x) {} +void endnetent(x) {} +void endprotoent(x) {} +void endservent(x) {} + +/*****************************************************************************/ +/* stat() hack for char/block device */ + +#if OS2_STAT_HACK + + /* First attempt used DosQueryFSAttach which crashed the system when + used with 5.001. Now just look for /dev/. */ + +int +os2_stat(char *name, struct stat *st) +{ + static int ino = SHRT_MAX; + + if (stricmp(name, "/dev/con") != 0 + && stricmp(name, "/dev/tty") != 0) + return stat(name, st); + + memset(st, 0, sizeof *st); + st->st_mode = S_IFCHR|0666; + st->st_ino = (ino-- & 0x7FFF); + st->st_nlink = 1; + return 0; +} + +#endif |