1998/0425/port/devproc.c (diff list | history)

1998/0319/sys/src/9/port/devproc.c:246,256 – 1998/0425/sys/src/9/port/devproc.c:246,268 (short | long | prev | next)
Bug fix: lock p->debug while reading /proc/n/fd to avoid fgrp disappearing. rsc Fri Mar 4 12:44:25 2005
1990/0227		}
1998/0310		static int procfds(Fgrp *f, char *va, int count, long offset)
1998/0425		procfds(Proc *p, char *va, int count, long offset)
1998/0310		{
1998/0425		Fgrp *f;
1998/0310		Chan *c; int n, i;
1998/0425		f = p->fgrp; if(f == nil) return 0; if(waserror()){ unlock(f); qunlock(&p->debug); nexterror(); } qlock(&p->debug); lock(f);
1998/0310		n = 0; for(i = 0; i <= f->maxfd; i++) { c = f->fd[i];
1998/0319/sys/src/9/port/devproc.c:273,278 – 1998/0425/sys/src/9/port/devproc.c:285,294
1998/0310		n = 0; } }
1998/0425		unlock(f); qunlock(&p->debug); poperror();
1998/0310		return n; }
1998/0319/sys/src/9/port/devproc.c:519,525 – 1998/0425/sys/src/9/port/devproc.c:535,541
1993/1018		case Qnoteid: return readnum(offset, va, n, p->noteid, NUMSIZE);
1998/0310		case Qfd: return procfds(p->fgrp, va, n, offset);
1998/0425		return procfds(p, va, n, offset);
1990/0227		}
1990/11211		error(Egreg);
1992/0520		return 0; /* not reached */