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[v4,9/9] drivers/oprofile: open access for CAP_SYS_PERFMON privileged process

Message ID 70eb48f8-34ae-8aa3-ca64-d433b75ea2ae@linux.intel.com
State Superseded
Headers show
Series Introduce CAP_SYS_PERFMON to secure system performance monitoring and observability | expand

Commit Message

Alexey Budankov Dec. 18, 2019, 9:31 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>
 drivers/oprofile/event_buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c
index 12ea4a4ad607..6c9edc8bbc95 100644
--- a/drivers/oprofile/event_buffer.c
+++ b/drivers/oprofile/event_buffer.c
@@ -113,7 +113,7 @@  static int event_buffer_open(struct inode *inode, struct file *file)
 	int err = -EPERM;
-	if (!capable(CAP_SYS_ADMIN))
+	if (!perfmon_capable())
 		return -EPERM;
 	if (test_and_set_bit_lock(0, &buffer_opened))