sed: Can't open /usr/web/plan9/sources.html #include "sam.h" #include "parse.h" extern jmp_buf mainloop; char errfile[64]; String plan9cmd; /* null terminated */ Buffer plan9buf; void checkerrs(void); int plan9(File *f, int type, String *s, int nest) { long l; int m; int pid, fd; int retcode; char *retmsg; int pipe1[2], pipe2[2]; if(s->s[0]==0 && plan9cmd.s[0]==0) error(Enocmd); else if(s->s[0]) Strduplstr(&plan9cmd, s); if(downloaded){ samerr(errfile); remove(errfile); } if(type!='!' && pipe(pipe1)==-1) error(Epipe); if(type=='|') snarf(f, addr.r.p1, addr.r.p2, &plan9buf, 1); if((pid=fork()) == 0){ if(downloaded){ /* also put nasty fd's into errfile */ fd = create(errfile, 1, 0666L); if(fd < 0) fd = create("/dev/null", 1, 0666L); dup(fd, 2); close(fd); /* 2 now points at err file */ if(type == '>') dup(2, 1); else if(type=='!'){ dup(2, 1); fd = open("/dev/null", 0); dup(fd, 0); close(fd); } } if(type != '!') { if(type=='<' || type=='|') dup(pipe1[1], 1); else if(type == '>') dup(pipe1[0], 0); close(pipe1[0]); close(pipe1[1]); } if(type == '|'){ if(pipe(pipe2) == -1) exits("pipe"); if((pid = fork())==0){ /* * It's ok if we get SIGPIPE here */ close(pipe2[0]); io = pipe2[1]; if(retcode=!setjmp(mainloop)){ /* assignment = */ char *c; for(l = 0; l<plan9buf.nc; l+=m){ m = plan9buf.nc-l; if(m>BLOCKSIZE-1) m = BLOCKSIZE-1; bufread(&plan9buf, l, genbuf, m); genbuf[m] = 0; c = Strtoc(tmprstr(genbuf, m+1)); Write(pipe2[1], c, strlen(c)); free(c); } } exits(retcode? "error" : 0); } if(pid==-1){ fprint(2, "Can't fork?!\n"); exits("fork"); } dup(pipe2[0], 0); close(pipe2[0]); close(pipe2[1]); } if(type=='<'){ close(0); /* so it won't read from terminal */ open("/dev/null", 0); } execl(SHPATH, SH, "-c", Strtoc(&plan9cmd), nil); exits("exec"); } if(pid == -1) error(Efork); if(type=='<' || type=='|'){ int nulls; if(downloaded && addr.r.p1 != addr.r.p2) outTl(Hsnarflen, addr.r.p2-addr.r.p1); snarf(f, addr.r.p1, addr.r.p2, &snarfbuf, 0); logdelete(f, addr.r.p1, addr.r.p2); close(pipe1[1]); io = pipe1[0]; f->tdot.p1 = -1; f->ndot.r.p2 = addr.r.p2+readio(f, &nulls, 0, FALSE); f->ndot.r.p1 = addr.r.p2; closeio((Posn)-1); }else if(type=='>'){ close(pipe1[0]); io = pipe1[1]; bpipeok = 1; writeio(f); bpipeok = 0; closeio((Posn)-1); } retmsg = waitfor(pid); if(type=='|' || type=='<') if(retmsg[0]!=0) warn_s(Wbadstatus, retmsg); if(downloaded) checkerrs(); if(!nest) dprint("!\n"); return retmsg[0] ? -1 : 0; } void checkerrs(void) { char buf[256]; int f, n, nl; char *p; long l; if(statfile(errfile, 0, 0, 0, &l, 0) > 0 && l != 0){ if((f=open((char *)errfile, 0)) != -1){ if((n=read(f, buf, sizeof buf-1)) > 0){ for(nl=0,p=buf; nl<3 && p<&buf[n]; p++) if(*p=='\n') nl++; *p = 0; dprint("%s", buf); if(p-buf < l-1) dprint("(sam: more in %s)\n", errfile); } close(f); } }else remove((char *)errfile); } sed: Can't open /usr/web/plan9/sources.html