lsfd: add ENDPOINTS column

The field is for printing the information about the IPC
endpoints.

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

misc-utils/lsfd.1.adoc

@@ -133,6 +133,9 @@ ID of the device containing the file.
 DEVTYPE <__string__>::
 Device type (_blk_, _char_, or _nodev_).
 
+ENDPOINT <__string__>::
+IPC endpoints information communicated with the fd.
+
 FD <__number__>::
 File descriptor for the file.
 

misc-utils/lsfd.c

@@ -133,6 +133,8 @@ static struct colinfo infos[] = {
 		N_("ID of device containing file") },
 	[COL_DEVTYPE] = { "DEVTYPE",  0, SCOLS_FL_RIGHT, SCOLS_JSON_STRING,
 		N_("device type (blk, char, or nodev)") },
+	[COL_ENDPOINTS] ={"ENDPOINTS",0,              0, SCOLS_JSON_STRING,
+		N_("IPC endpoints information communicated with the fd") },
 	[COL_FLAGS]   = { "FLAGS",    0, SCOLS_FL_RIGHT, SCOLS_JSON_STRING,
 		N_("flags specified when opening the file") },
 	[COL_FD]      = { "FD",       0, SCOLS_FL_RIGHT, SCOLS_JSON_NUMBER,

misc-utils/lsfd.h

@@ -43,6 +43,7 @@ enum {
 	COL_DELETED,
 	COL_DEV,
 	COL_DEVTYPE,
+	COL_ENDPOINTS,
 	COL_FD,
 	COL_FLAGS,
 	COL_INODE,