From: Masatake YAMATO <yamato@redhat.com>
Date: Sun, 5 Mar 2023 19:05:03 +0000 (+0900)
Subject: lsfd: add a new type "mqueue", a type for POSIX Mqueue
X-Git-Tag: v2.40-rc1~436^2~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ad0569880f7753a38cf222ff33d2dda5bdc61e56;p=thirdparty%2Futil-linux.git

lsfd: add a new type "mqueue", a type for POSIX Mqueue

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
---

diff --git a/misc-utils/lsfd-file.c b/misc-utils/lsfd-file.c
index d7fcad41b3..15545dc95b 100644
--- a/misc-utils/lsfd-file.c
+++ b/misc-utils/lsfd-file.c
@@ -463,3 +463,38 @@ const struct file_class nsfs_file_class = {
 	.fill_column = nsfs_file_fill_column,
 	.handle_fdinfo = NULL,
 };
+
+/*
+ * POSIX Mqueue
+ */
+bool is_mqueue_dev(dev_t dev)
+{
+	const char *fs = get_nodev_filesystem(minor(dev));
+
+	if (fs && (strcmp (fs, "mqueue") == 0))
+		return true;
+
+	return false;
+}
+
+static bool mqueue_file_fill_column(struct proc *proc __attribute__((__unused__)),
+				    struct file *file __attribute__((__unused__)),
+				    struct libscols_line *ln,
+				    int column_id,
+				    size_t column_index)
+{
+	switch (column_id) {
+	case COL_TYPE:
+		if (scols_line_set_data(ln, column_index, "mqueue"))
+			err(EXIT_FAILURE, _("failed to add output data"));
+		return true;
+	default:
+		return false;
+	}
+}
+
+const struct file_class mqueue_file_class = {
+	.super = &file_class,
+	.size = sizeof(struct file),
+	.fill_column = mqueue_file_fill_column,
+};
diff --git a/misc-utils/lsfd.c b/misc-utils/lsfd.c
index 7aade762ee..1b5f6d747d 100644
--- a/misc-utils/lsfd.c
+++ b/misc-utils/lsfd.c
@@ -594,6 +594,9 @@ static const struct file_class *stat2class(struct stat *sb)
 		if (is_nsfs_dev(dev))
 			return &nsfs_file_class;
 
+		if (is_mqueue_dev(dev))
+			return &mqueue_file_class;
+
 		return &file_class;
 	default:
 		break;
diff --git a/misc-utils/lsfd.h b/misc-utils/lsfd.h
index c09a11a752..a0a20e66ef 100644
--- a/misc-utils/lsfd.h
+++ b/misc-utils/lsfd.h
@@ -186,7 +186,7 @@ struct file_class {
 };
 
 extern const struct file_class file_class, cdev_class, bdev_class, sock_class, unkn_class, fifo_class,
-	nsfs_file_class;
+	nsfs_file_class, mqueue_file_class;
 
 /*
  * IPC
@@ -250,4 +250,10 @@ static inline void xstrputc(char **a, char c)
 void load_sock_xinfo(struct path_cxt *pc, const char *name, ino_t netns);
 bool is_nsfs_dev(dev_t dev);
 
+/*
+ * POSIX Mqueue
+ */
+/* 0 is assumed as the major dev for DEV. */
+bool is_mqueue_dev(dev_t dev);
+
 #endif /* UTIL_LINUX_LSFD_H */