[PATCH] dpkg-query: --listfiles without package lists all files

[jspricke@debian.org]

From: Jochen Sprickerhof <jspricke@debian.org>

---
 man/dpkg-query.pod |  2 +-
 man/dpkg.pod       |  2 +-
 src/main/main.c    |  2 +-
 src/query/main.c   | 24 ++++++++++++++++++++----
 4 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/man/dpkg-query.pod b/man/dpkg-query.pod
index ade71db25..53ab4e3b7 100644
--- a/man/dpkg-query.pod
+++ b/man/dpkg-query.pod
@@ -137,7 +137,7 @@ When multiple I<package-name> entries are listed, the requested status
 entries are separated by an empty line, with the same order as specified
 on the argument list.
 
-=item B<-L>, B<--listfiles> I<package-name>...
+=item B<-L>, B<--listfiles> [I<package-name>...]
 
 List files installed to your system from I<package-name>. When multiple
 I<package-name>s are listed, the requested lists of files are separated
diff --git a/man/dpkg.pod b/man/dpkg.pod
index f09b7c0d1..2aa2fbecc 100644
--- a/man/dpkg.pod
+++ b/man/dpkg.pod
@@ -596,7 +596,7 @@ List packages matching given pattern.
 
 Report status of specified package.
 
-=item B<-L>, B<--listfiles> I<package-name>...
+=item B<-L>, B<--listfiles> [I<package-name>...]
 
 List files installed to your system from I<package-name>.
 
diff --git a/src/main/main.c b/src/main/main.c
index 9cba932aa..d5d95374b 100644
--- a/src/main/main.c
+++ b/src/main/main.c
@@ -104,7 +104,7 @@ usage(const struct cmdinfo *ci, const char *value)
 "  --forget-old-unavail             Forget uninstalled unavailable pkgs.\n"
 "  -s|--status [<package>...]       Display package status details.\n"
 "  -p|--print-avail [<package>...]  Display available version details.\n"
-"  -L|--listfiles <package>...      List files 'owned' by package(s).\n"
+"  -L|--listfiles [<package>...]    List files 'owned' by package(s).\n"
 "  -l|--list [<pattern>...]         List packages concisely.\n"
 "  -S|--search <pattern>...         Find package(s) owning file(s).\n"
 "  -C|--audit [<package>...]        Check for broken package(s).\n"
diff --git a/src/query/main.c b/src/query/main.c
index 6e3fe51ef..eabd03180 100644
--- a/src/query/main.c
+++ b/src/query/main.c
@@ -480,15 +480,31 @@ list_files(const char *const *argv)
 {
   const char *thisarg;
   struct fsys_namenode_list *file;
+  struct pkg_array array;
   struct pkginfo *pkg;
   struct fsys_namenode *namenode;
   int failures = 0;
-
-  if (!*argv)
-    badusage(_("--%s needs at least one package name argument"), cipaction->olong);
+  int i;
 
   modstatdb_open(msdbrw_readonly);
 
+  if (!*argv) {
+    pkg_array_init_from_hash(&array);
+    for (i = 0; i < array.n_pkgs; i++) {
+      pkg = array.pkgs[i];
+      if (pkg->status != PKG_STAT_NOTINSTALLED) {
+        ensure_packagefiles_available(pkg);
+        file = pkg->files;
+        while (file) {
+          namenode = file->namenode;
+          puts(namenode->name);
+          file = file->next;
+        }
+      }
+    }
+    return 0;
+  }
+
   while ((thisarg = *argv++) != NULL) {
     pkg = dpkg_options_parse_pkgname(cipaction, thisarg);
 
@@ -803,7 +819,7 @@ usage(const struct cmdinfo *ci, const char *value)
 "Commands:\n"
 "  -s, --status [<package>...]      Display package status details.\n"
 "  -p, --print-avail [<package>...] Display available version details.\n"
-"  -L, --listfiles <package>...     List files 'owned' by package(s).\n"
+"  -L, --listfiles [<package>...]   List files 'owned' by package(s).\n"
 "  -l, --list [<pattern>...]        List packages concisely.\n"
 "  -W, --show [<pattern>...]        Show information on package(s).\n"
 "  -S, --search <pattern>...        Find package(s) owning file(s).\n"
-- 
2.37.2