From 1cedccf8e9b63757c182477f803afcb27bd9e17e Mon Sep 17 00:00:00 2001
From: Jamie Liu <jamieliu@google.com>
Date: Mon, 28 Jan 2019 10:59:01 -0800
Subject: Drop the one-page limit for /proc/[pid]/{cmdline,environ}.
It never actually should have applied to environ (the relevant change in
Linux 4.2 is c2c0bb44620d "proc: fix PAGE_SIZE limit of
/proc/$PID/cmdline"), and we claim to be Linux 4.4 now anyway.
PiperOrigin-RevId: 231250661
Change-Id: I37f9c4280a533d1bcb3eebb7803373ac3c7b9f15
---
pkg/sentry/fs/proc/exec_args.go | 6 ------
1 file changed, 6 deletions(-)
(limited to 'pkg/sentry/fs/proc')
diff --git a/pkg/sentry/fs/proc/exec_args.go b/pkg/sentry/fs/proc/exec_args.go
index ddda67f54..a716eb5f5 100644
--- a/pkg/sentry/fs/proc/exec_args.go
+++ b/pkg/sentry/fs/proc/exec_args.go
@@ -101,12 +101,6 @@ func (f *execArgFile) Read(ctx context.Context, _ *fs.File, dst usermem.IOSequen
return 0, syserror.EINVAL
}
- // N.B. Linux 4.2 eliminates the arbitrary one page limit.
- if offset > usermem.PageSize {
- return 0, io.EOF
- }
- dst = dst.TakeFirst64(usermem.PageSize - offset)
-
m, err := getTaskMM(f.t)
if err != nil {
return 0, err
--
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