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From:   Thiago Becker <tbecker@redhat.com>
To:     linux-nfs@vger.kernel.org
Cc:     steved@redhat.com, trond.myklebust@hammerspace.com,
        anna.schumaker@netapp.com, kolga@netapp.com,
        Thiago Becker <tbecker@redhat.com>
Subject: [PATCH v4 5/7] nfsrahead: get the information from the config file.
Date:   Fri,  1 Apr 2022 12:32:06 -0300
Message-Id: <20220401153208.3120851-6-tbecker@redhat.com>
In-Reply-To: <20220401153208.3120851-1-tbecker@redhat.com>
References: <20220401153208.3120851-1-tbecker@redhat.com>
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1946283
Signed-off-by: Thiago Becker <tbecker@redhat.com>
---
 tools/nfsrahead/main.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tools/nfsrahead/main.c b/tools/nfsrahead/main.c
index b630b92f..1a312ac9 100644
--- a/tools/nfsrahead/main.c
+++ b/tools/nfsrahead/main.c
@@ -8,12 +8,14 @@
 #include <sys/sysmacros.h>
 
 #include "xlog.h"
+#include "conffile.h"
 
 #ifndef MOUNTINFO_PATH
 #define MOUNTINFO_PATH "/proc/self/mountinfo"
 #endif
 
 #define CONF_NAME "nfsrahead"
+#define NFS_DEFAULT_READAHEAD 128
 
 /* Device information from the system */
 struct device_info {
@@ -113,6 +115,14 @@ static int get_device_info(const char *device_number, struct device_info *device
 	return ret;
 }
 
+static int conf_get_readahead(const char *kind) {
+	int readahead = 0;
+
+	if((readahead = conf_get_num(CONF_NAME, kind, -1)) == -1)
+		readahead = conf_get_num(CONF_NAME, "default", NFS_DEFAULT_READAHEAD);
+	
+	return readahead;
+}
 #define L_DEFAULT (L_WARNING | L_ERROR | L_FATAL)
 
 int main(int argc, char **argv)
@@ -133,6 +143,8 @@ int main(int argc, char **argv)
 		}
 	}
 
+	conf_init_file(NFS_CONFFILE);
+
 	xlog_stderr(log_stderr);
 	xlog_syslog(~log_stderr);
 	xlog_config(L_DEFAULT | (L_NOTICE & verbose), 1);
@@ -155,6 +167,8 @@ int main(int argc, char **argv)
 		goto out;
 	}
 
+	readahead = conf_get_readahead(device.fstype);
+
 	xlog(L_WARNING, "setting %s readahead to %d\n", device.mountpoint, readahead);
 
 	printf("%d\n", readahead);
-- 
2.35.1