diff mbox series

[v2,7/7] parisc/perf: open access for CAP_SYS_PERFMON privileged process

Message ID 22abd684-706c-1b3c-3858-e756217c9243@linux.intel.com (mailing list archive)
State Awaiting Upstream
Headers show
Series Introduce CAP_SYS_PERFMON to secure system performance monitoring and observability | expand

Commit Message

Alexey Budankov Dec. 16, 2019, 7:19 a.m. UTC 
Open access to monitoring for CAP_SYS_PERFMON privileged processes.
For backward compatibility reasons access to the monitoring remains open
for CAP_SYS_ADMIN privileged processes but CAP_SYS_ADMIN usage for secure
monitoring is discouraged with respect to CAP_SYS_PERFMON capability.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
---
 arch/parisc/kernel/perf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
index 676683641d00..58e7d1444e4f 100644
--- a/arch/parisc/kernel/perf.c
+++ b/arch/parisc/kernel/perf.c
@@ -300,7 +300,7 @@  static ssize_t perf_write(struct file *file, const char __user *buf,
 	else
 		return -EFAULT;
 
-	if (!capable(CAP_SYS_ADMIN))
+	if (!(capable(CAP_SYS_PERFMON) || capable(CAP_SYS_ADMIN)))
 		return -EACCES;
 
 	if (count != sizeof(uint32_t))