linux-kernel - [PATCH 14/15] Respect RLIMIT

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Date:	Wed, 12 Sep 2007 17:43:51 +1000 (EST)
From:	Michael Ellerman <michael@...erman.id.au>
To:	<linuxppc-dev@...abs.org>
Cc:	Jeremy Kerr <jk@...abs.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 14/15] Respect RLIMIT_CORE in spu coredump code

Currently the spu coredump code doesn't respect the ulimit, it should.

Signed-off-by: Michael Ellerman <michael@...erman.id.au>
---
 arch/powerpc/platforms/cell/spufs/coredump.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/platforms/cell/spufs/coredump.c b/arch/powerpc/platforms/cell/spufs/coredump.c
index c3b5cd5..b8ab2c6 100644
--- a/arch/powerpc/platforms/cell/spufs/coredump.c
+++ b/arch/powerpc/platforms/cell/spufs/coredump.c
@@ -53,8 +53,12 @@ static ssize_t do_coredump_read(int num, struct spu_context *ctx, void *buffer,
  */
 static int spufs_dump_write(struct file *file, const void *addr, int nr, loff_t *foffset)
 {
+	unsigned long limit = current->signal->rlim[RLIMIT_CORE].rlim_cur;
 	ssize_t written;
 
+	if (*foffset + nr > limit)
+		return -EIO;
+
 	written = file->f_op->write(file, addr, nr, &file->f_pos);
 	*foffset += written;
 
-- 
1.5.1.3.g7a33b

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