modpost: add -T option to read module names from file/stdin.

Because there are too many modules in the world.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 30 insertions, 2 deletions

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index f7a0392ad1ca..1f90961ada77 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -15,6 +15,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
+#include <limits.h>
 #include <stdbool.h>
 #include "modpost.h"
 #include "../../include/generated/autoconf.h"
@@ -1763,6 +1764,27 @@ static void read_symbols(char *modname)
                 mod->unres = alloc_symbol("module_layout", 0, mod->unres);
 }
 
+static void read_symbols_from_files(const char *filename)
+{
+        FILE *in = stdin;
+        char fname[PATH_MAX];
+
+        if (strcmp(filename, "-") != 0) {
+                in = fopen(filename, "r");
+                if (!in)
+                        fatal("Can't open filenames file %s: %m", filename);
+        }
+
+        while (fgets(fname, PATH_MAX, in) != NULL) {
+                if (strends(fname, "\n"))
+                        fname[strlen(fname)-1] = '\0';
+                read_symbols(fname);
+        }
+
+        if (in != stdin)
+                fclose(in);
+}
+
 #define SZ 500
 
 /* We first write the generated file into memory using the
@@ -2124,13 +2146,13 @@ int main(int argc, char **argv)
         struct module *mod;
         struct buffer buf = { };
         char *kernel_read = NULL, *module_read = NULL;
-        char *dump_write = NULL;
+        char *dump_write = NULL, *files_source = NULL;
         int opt;
         int err;
         struct ext_sym_list *extsym_iter;
         struct ext_sym_list *extsym_start = NULL;
 
-        while ((opt = getopt(argc, argv, "i:I:e:msSo:awM:K:")) != -1) {
+        while ((opt = getopt(argc, argv, "i:I:e:msST:o:awM:K:")) != -1) {
                 switch (opt) {
                 case 'i':
                         kernel_read = optarg;
@@ -2162,6 +2184,9 @@ int main(int argc, char **argv)
                 case 'S':
                         sec_mismatch_verbose = 0;
                         break;
+                case 'T':
+                        files_source = optarg;
+                        break;
                 case 'w':
                         warn_unresolved = 1;
                         break;
@@ -2184,6 +2209,9 @@ int main(int argc, char **argv)
         while (optind < argc)
                 read_symbols(argv[optind++]);
 
+        if (files_source)
+                read_symbols_from_files(files_source);
+
         for (mod = modules; mod; mod = mod->next) {
                 if (mod->skip)
                         continue;