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kernel: make #0/pid, #0/ppid and #0/pgrpid readable

This commit is contained in:
Giacomo Tesio 2017-01-02 00:30:27 +01:00
parent da77086023
commit ac15346de7
1 changed files with 11 additions and 3 deletions
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14
sys/src/kern/port/devself.c
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@ -65,9 +65,9 @@ typedef union PipeSet
static Dirtab selfdir[]={
".", {Qdir, 0, QTDIR}, 0, DMDIR|0777,
"brk", {Qbrk}, 0, 0,
"pid", {Qpid}, 0, 0,
"ppid", {Qppid}, 0, 0,
"pgrpid", {Qpgrpid}, 0, 0,
"pid", {Qpid}, 0, 0400,
"ppid", {Qppid}, 0, 0400,
"pgrpid", {Qpgrpid}, 0, 0400,
"segments", {Qsegments}, 0, 0644,
"pipes", {Qpipes}, 0, 0,
"wdir", {Qwdir}, 0, 0644,
@ -311,6 +311,14 @@ selfread(Chan *c, void *va, long n, int64_t off)
return n;
case Qwdir:
return read_working_dir(up, va, n, off);
case Qpid:
return readnum(offset, va, n, up->pid, NUMSIZE);
case Qppid:
return readnum(offset, va, n, up->parentpid, NUMSIZE);
case Qpgrpid:
return readnum(offset, va, n, up->pgrp->pgrpid, NUMSIZE);
default:
error(Egreg);
}