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vncs: cleanup and error handling

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This commit is contained in:
cinap_lenrek 2012-08-19 08:57:40 +02:00
parent 7bb4a790d6
commit 62f5a7e2b7
1 changed files with 28 additions and 18 deletions
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46
sys/src/cmd/vnc/vncs.c
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@ -192,39 +192,49 @@ main(int argc, char **argv)
unmount(nil, "/dev");
bind("#c", "/dev", MREPL);
/* run the command */
switch(cmdpid = rfork(RFPROC|RFFDG|RFNOTEG)){
/* mount exporter */
if(mounter("/dev", MBEFORE, fd, exnum) < 0)
sysfatal("mounter: %r");
close(fd);
/* start and mount kbdfs */
switch(cmdpid = rfork(RFPROC|RFMEM|RFFDG|RFREND)){
case -1:
sysfatal("rfork: %r");
break;
case 0:
if(mounter("/dev", MBEFORE, fd, exnum) < 0)
sysfatal("mounter: %r");
close(exportfd);
close(1);
open("/dev/cons", OWRITE);
close(2);
open("/dev/cons", OWRITE);
open("/dev/cons", OWRITE);
if(rfork(RFPROC|RFMEM|RFFDG) == 0){
exec(kbdfs[0], kbdfs);
_exits("kbdfs");
}
waitpid();
rfork(RFNAMEG);
rendezvous(&cmdpid, 0);
rfork(RFREND);
exec(kbdfs[0], kbdfs);
_exits("kbdfs");
}
if(waitpid() != cmdpid)
sysfatal("%s: %r", kbdfs[0]);
if((kbdin = open("/dev/kbdin", OWRITE)) < 0)
sysfatal("open /dev/kbdin: %r");
/* run the command */
switch(cmdpid = rfork(RFPROC|RFMEM|RFFDG|RFNAMEG|RFREND|RFNOTEG)){
case -1:
sysfatal("rfork: %r");
break;
case 0:
close(exportfd);
close(kbdin);
close(0);
open("/dev/cons", OREAD);
close(1);
open("/dev/cons", OWRITE);
close(2);
open("/dev/cons", OWRITE);
exec(argv[0], argv);
fprint(2, "exec %s: %r\n", argv[0]);
_exits(nil);
default:
close(fd);
break;
}
rendezvous(&cmdpid, 0);
kbdin = open("/dev/kbdin", OWRITE);
unmount(nil, "/dev");
bind("#c", "/dev", MREPL);