* [PATCH] sysctl: Allow non-root to read mmap_min_addr value
@ 2010-05-12 8:39 Adam Lackorzynski
0 siblings, 0 replies; only message in thread
From: Adam Lackorzynski @ 2010-05-12 8:39 UTC (permalink / raw)
To: linux-kernel
Although /proc/sys/vm/mmap_min_addr has 644 permissions a read call returns
-EPERM. Allow any user to read the mmap_min_addr value.
Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
---
security/min_addr.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/security/min_addr.c b/security/min_addr.c
index e86f297..f728728 100644
--- a/security/min_addr.c
+++ b/security/min_addr.c
@@ -33,7 +33,7 @@ int mmap_min_addr_handler(struct ctl_table *table, int write,
{
int ret;
- if (!capable(CAP_SYS_RAWIO))
+ if (write && !capable(CAP_SYS_RAWIO))
return -EPERM;
ret = proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
--
1.7.1
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2010-05-12 8:39 [PATCH] sysctl: Allow non-root to read mmap_min_addr value Adam Lackorzynski
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