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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Renaud=20M=C3=A9trich?= <rmetrich@redhat.com>
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Date: Fri, 29 Nov 2019 11:02:00 +0100
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Subject: [PATCH] grub_file_* instrumentation (new 'file' debug tag)
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Renaud Métrich <rmetrich@redhat.com>
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---
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grub-core/kern/file.c | 14 ++++++++++++++
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1 file changed, 14 insertions(+)
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diff --git a/grub-core/kern/file.c b/grub-core/kern/file.c
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index 668f8930b..c2d9a5500 100644
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--- a/grub-core/kern/file.c
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+++ b/grub-core/kern/file.c
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@@ -67,6 +67,8 @@ grub_file_open (const char *name)
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const char *file_name;
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grub_file_filter_id_t filter;
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+ grub_dprintf ("file", "Opening `%s' ...\n", name);
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+
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device_name = grub_file_get_device_name (name);
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if (grub_errno)
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goto fail;
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@@ -127,6 +129,8 @@ grub_file_open (const char *name)
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grub_memcpy (grub_file_filters_enabled, grub_file_filters_all,
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sizeof (grub_file_filters_enabled));
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+ grub_dprintf ("file", "Opening `%s' succeeded.\n", name);
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+
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return file;
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fail:
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@@ -140,6 +144,8 @@ grub_file_open (const char *name)
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grub_memcpy (grub_file_filters_enabled, grub_file_filters_all,
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sizeof (grub_file_filters_enabled));
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+ grub_dprintf ("file", "Opening `%s' failed.\n", name);
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+
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return 0;
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}
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@@ -171,6 +177,7 @@ grub_file_read (grub_file_t file, void *buf, grub_size_t len)
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if (len == 0)
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return 0;
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+
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read_hook = file->read_hook;
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read_hook_data = file->read_hook_data;
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if (!file->read_hook)
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@@ -191,11 +198,18 @@ grub_file_read (grub_file_t file, void *buf, grub_size_t len)
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grub_err_t
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grub_file_close (grub_file_t file)
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{
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+ grub_dprintf ("file", "Closing `%s' ...\n", file->name);
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if (file->fs->close)
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(file->fs->close) (file);
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if (file->device)
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grub_device_close (file->device);
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+
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+ if (grub_errno == GRUB_ERR_NONE)
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+ grub_dprintf ("file", "Closing `%s' succeeded.\n", file->name);
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+ else
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+ grub_dprintf ("file", "Closing `%s' failed with %d.\n", file->name, grub_errno);
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+
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grub_free (file->name);
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grub_free (file);
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return grub_errno;
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