ima: rename variable the seq_file "file" to "ima_kexec_file"

JIRA: https://issues.redhat.com/browse/RHEL-114162

Upstream Status: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

commit cb50522
Author: Steven Chen <chenste@linux.microsoft.com>
Date:   Mon Apr 21 15:25:07 2025 -0700

    ima: rename variable the seq_file "file" to "ima_kexec_file"

    Before making the function local seq_file "file" variable file static
    global, rename it to "ima_kexec_file".

    Signed-off-by: Steven Chen <chenste@linux.microsoft.com>
    Acked-by: Baoquan He <bhe@redhat.com>
    Tested-by: Stefan Berger <stefanb@linux.ibm.com> # ppc64/kvm
    Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>

Signed-off-by: Baoquan He <bhe@redhat.com>

Author: Baoquan He

security/integrity/ima/ima_kexec.c

@@ -18,30 +18,30 @@
 static int ima_dump_measurement_list(unsigned long *buffer_size, void **buffer,
 				     unsigned long segment_size)
 {
+	struct seq_file ima_kexec_file;
 	struct ima_queue_entry *qe;
-	struct seq_file file;
 	struct ima_kexec_hdr khdr;
 	int ret = 0;
 
 	/* segment size can't change between kexec load and execute */
-	file.buf = vmalloc(segment_size);
-	if (!file.buf) {
+	ima_kexec_file.buf = vmalloc(segment_size);
+	if (!ima_kexec_file.buf) {
 		ret = -ENOMEM;
 		goto out;
 	}
 
-	file.file = NULL;
-	file.size = segment_size;
-	file.read_pos = 0;
-	file.count = sizeof(khdr);	/* reserved space */
+	ima_kexec_file.file = NULL;
+	ima_kexec_file.size = segment_size;
+	ima_kexec_file.read_pos = 0;
+	ima_kexec_file.count = sizeof(khdr);	/* reserved space */
 
 	memset(&khdr, 0, sizeof(khdr));
 	khdr.version = 1;
 	/* This is an append-only list, no need to hold the RCU read lock */
 	list_for_each_entry_rcu(qe, &ima_measurements, later, true) {
-		if (file.count < file.size) {
+		if (ima_kexec_file.count < ima_kexec_file.size) {
 			khdr.count++;
-			ima_measurements_show(&file, qe);
+			ima_measurements_show(&ima_kexec_file, qe);
 		} else {
 			ret = -EINVAL;
 			break;
@@ -55,23 +55,24 @@ static int ima_dump_measurement_list(unsigned long *buffer_size, void **buffer,
 	 * fill in reserved space with some buffer details
 	 * (eg. version, buffer size, number of measurements)
 	 */
-	khdr.buffer_size = file.count;
+	khdr.buffer_size = ima_kexec_file.count;
 	if (ima_canonical_fmt) {
 		khdr.version = cpu_to_le16(khdr.version);
 		khdr.count = cpu_to_le64(khdr.count);
 		khdr.buffer_size = cpu_to_le64(khdr.buffer_size);
 	}
-	memcpy(file.buf, &khdr, sizeof(khdr));
+	memcpy(ima_kexec_file.buf, &khdr, sizeof(khdr));
 
 	print_hex_dump_debug("ima dump: ", DUMP_PREFIX_NONE, 16, 1,
-			     file.buf, file.count < 100 ? file.count : 100,
+			     ima_kexec_file.buf, ima_kexec_file.count < 100 ?
+			     ima_kexec_file.count : 100,
 			     true);
 
-	*buffer_size = file.count;
-	*buffer = file.buf;
+	*buffer_size = ima_kexec_file.count;
+	*buffer = ima_kexec_file.buf;
 out:
 	if (ret == -EINVAL)
-		vfree(file.buf);
+		vfree(ima_kexec_file.buf);
 	return ret;
 }